JP2023122101A - heat management system - Google Patents

Abstract

To provide a heat management system which is capable of controlling temperature of a temperature control target in cheap price when controlling temperature by causing a heat medium to circulate through the temperature control target and can solve problem caused by deviation of the heat medium.SOLUTION: A heat management system is provided with a storage part 26 on a route on which a heat medium is returned from a temperature control circuit 42 to low temperature heat medium circuits 43, 43A. The storage part 26 includes a high temperature side storage chamber 65 which includes high temperature side outlets 64A, 66A into which the heat medium flowing through a high temperature heat medium circuit 44 is introduced and which return the heat medium to the high temperature heat medium circuit 44, a temperature control side storage chamber 63 which stores the heat medium by the heat medium being introduced which circulates through the temperature control circuit 42, and a partition wall 67 which partitions the high temperature side storage chamber 65 and the temperature control side storage chamber 63 in such a condition that the heat medium in the high temperature side storage chamber 65 and the heat medium in the temperature control side storage chamber 63 have heat exchange relationship.SELECTED DRAWING: Figure 1

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat management system that regulates temperature by circulating a heat medium to an object to be temperature controlled.

2. Description of the Related Art Conventionally, a battery (battery), an electric motor for running, an inverter, and the like (hereinafter referred to as a temperature control target) mounted on, for example, an electric vehicle (electric vehicle, hybrid vehicle, etc.) generate heat. Therefore, a heat pump circuit (refrigerant circuit) is used to control the temperature by circulating the heat medium to multiple temperature control targets, or a heat pump circuit (refrigerant circuit) is used to air the vehicle interior. A heat management system has been developed that heats and cools a heat medium (such as water) with a refrigerant that absorbs heat in a heat medium circuit and circulates the heat medium through a temperature control target (for example, Patent Document 1 , 2, 3).

JP 2014-80123 A JP 2012-232730 A Japanese Patent Application Laid-Open No. 2021-138209

However, in the configurations of Patent Documents 2 and 3, for example, it is necessary to provide a heat exchanger for temperature control in the heat pump circuit in addition to the heat exchangers for the heater core and cooler core for air conditioning. Therefore, for example, the heat medium circulated in the cooler core and the heat medium circulated in the heater core can be flowed to the temperature control target side, but the heat medium that has flowed to the temperature control target side is introduced to the cooler core side. or the heater core side, and there is also a problem that the amount of one of the heat medium becomes excessive due to unevenness, and the reserve tank becomes full.

SUMMARY OF THE INVENTION The present invention has been made to solve such conventional technical problems. It is an object of the present invention to provide a heat management system capable of solving the problem associated with uneven heating medium.

In order to solve the above problems, the heat management system of the present invention includes a heat medium circuit that circulates a heat medium to a temperature control target to control the temperature, and includes a heat medium circuit that circulates the heat medium to the temperature control target. a temperature control circuit having a portion; a high-temperature heat medium circuit having a heating portion for heating a heat medium and through which the heat medium heated by the heating portion is circulated; and a heat medium connected to the temperature control circuit, and a low-temperature heat medium circuit in which the heat medium cooled by the cooling unit is circulated, and a path for returning the heat medium from the temperature control circuit to the low-temperature heat medium circuit, A high-temperature side storage chamber having a high-temperature side outlet for returning the heat medium to the high-temperature heat medium circuit. Then, the heat medium circulating in the temperature control circuit is introduced into the temperature control side storage chamber for storing the heat medium, and the heat medium in the high temperature side storage chamber and the heat medium in the temperature control side storage chamber have a heat exchange relationship. It is characterized by having a partition wall that partitions the high temperature side storage chamber and the temperature adjustment side storage chamber in a state where the storage chamber is closed.

In the heat management system of the invention of claim 2, the high temperature side storage chamber in the above invention includes a heat exchange high temperature side storage chamber in which the heat medium is in contact with the partition wall, and a bypass high temperature side storage chamber in which the heat medium is not in contact with the partition wall. The heat medium flowing through the high-temperature heat medium circuit is introduced into the high-temperature side storage chamber for heat exchange or introduced into the high-temperature side storage chamber for bypass. do.

In the heat management system of the invention of claim 3, in the above invention, when the temperature of the heat medium flowing through the high temperature heat medium circuit is lower than a predetermined value, the temperature adjustment unit introduces the heat medium into the high temperature side storage chamber for heat exchange. characterized by

In the heat management system of the invention of claim 4, in each of the above inventions, the storage unit stores the heat medium introduced by the heat medium flowing through the low temperature heat medium circuit, and the low temperature side that allows the heat medium to flow into the temperature control circuit. A low temperature side storage chamber having an outlet is provided, and the low temperature side storage chamber and the high temperature side storage chamber are communicated with each other at their upper portions.

According to a fifth aspect of the present invention, there is provided a heat management system according to the above invention, further comprising another temperature control section for switching whether or not to introduce the heat medium in the low-temperature side storage chamber into the temperature control circuit.

In the heat management system of the invention of claim 6, in the above invention, the other temperature control unit is configured to control the temperature of the heat medium flowing through the temperature control circuit from the low temperature storage chamber to the temperature control circuit when the temperature of the heat medium flowing through the temperature control circuit reaches or exceeds a predetermined value. characterized in that a heat medium is introduced into the

The heat management system of the invention of claim 7 is characterized in that, in the inventions of claims 2 to 6, the temperature adjustment unit has a temperature sensing unit that senses the temperature of the fluid flowing therein and switches the flow path of the fluid. It is characterized by being a path switching valve.

A heat management system according to an eighth aspect of the present invention is characterized in that, in each of the above inventions, the object of temperature regulation is a battery mounted on a vehicle, a motor for running the vehicle, or an inverter that drives the motor.

In the heat management system of the invention of claim 9, in each of the above inventions, the high-temperature heat medium circuit has a heater core for heating the interior of the vehicle by circulating the heat medium heated by the heating unit, and the low-temperature heat medium The circuit is characterized by having a cooler core for circulating the heat medium cooled by the cooling unit to cool the interior of the vehicle.

The heat management system of the invention of claim 10 comprises a compressor that compresses the refrigerant in each of the above inventions, a radiator that radiates heat from the refrigerant discharged from the compressor, and a decompression unit that decompresses the refrigerant radiated by the radiator. and a heat pump circuit having a heat absorber that absorbs heat from the refrigerant decompressed by the decompression unit, the radiator and the heating unit of the high-temperature heat medium circuit are provided in a heat exchange relationship, and the heat absorber and the low-temperature heat medium circuit are cooled. and are provided in a heat exchange relationship.

According to the present invention, a heat management system that regulates the temperature by circulating a heat medium to a temperature control target includes a temperature control circuit having a circulation unit that circulates the heat medium to the temperature control target, and a heating unit that heats the heat medium. a high-temperature heat medium circuit in which the heat medium heated by the heating unit is circulated; and a cooling unit connected to the temperature control circuit for cooling the heat medium. A low-temperature heat medium circuit through which the heat medium is circulated, and a reservoir for storing the heat medium are provided on a path for returning the heat medium from the temperature control circuit to the low-temperature heat medium circuit, and the reservoir flows through the high-temperature heat medium circuit. A high-temperature side storage chamber having a high-temperature side outlet for returning the heat medium to the high-temperature heat medium circuit, and a heat medium circulating in the temperature control circuit is introduced and stores the heat medium. A partition wall that separates the high temperature side storage chamber and the temperature adjustment side storage chamber in a state in which the heat medium in the high temperature side storage chamber and the heat medium in the temperature adjustment side storage chamber have a heat exchange relationship. , the heat medium in the high-temperature side storage chamber of the storage section heats the heat medium in the temperature control side storage chamber, thereby warming up the temperature control target. Also, by introducing the heat medium of the low-temperature heat medium circuit into the temperature control circuit, it is possible to cool the temperature control target, thereby enabling the temperature control target to be effectively temperature controlled.

In this case, since the heat medium is not introduced from the high-temperature heat-medium circuit to the temperature control circuit, the heat medium is not biased between the high-temperature heat-medium circuit and the low-temperature heat-medium circuit. In particular, the structure is such that a reservoir is provided on the path for returning the heat medium from the temperature control circuit to the low-temperature heat medium circuit, and the heat medium in the high-temperature heat medium circuit and the heat medium in the temperature control circuit are heat-exchanged in this reservoir. , the cost increase can be minimized.

According to the invention of claim 2, in addition to the above invention, the high temperature side storage chamber is a heat exchange high temperature side storage chamber in which the heat medium is in contact with the partition wall, and a bypass high temperature side storage chamber in which the heat medium is not in contact with the partition wall. Since the temperature control unit is provided to switch whether the heat medium flowing through the high-temperature heat medium circuit is introduced into the high-temperature side storage chamber for heat exchange or introduced into the high-temperature side storage chamber for bypass, temperature control is performed. When the target needs to be heated, the heat medium of the high-temperature heat medium circuit flows into the heat exchange high temperature side storage chamber by the temperature control unit to warm up the temperature control target, and when there is no need for heating, the bypass By flowing the heat medium of the high temperature heat medium circuit into the high temperature side storage chamber, it is possible to prevent excessive heating of the object to be temperature controlled.

In this case, when the temperature of the heat medium flowing through the high-temperature heat medium circuit is lower than a predetermined value, the temperature control unit, as in the invention of claim 3, introduces the heat medium into the high-temperature side storage chamber for heat exchange. If so, the object to be temperature controlled can be quickly warmed up.

Further, as in the fourth aspect of the present invention, the heat medium flowing through the low-temperature heat medium circuit is introduced into the storage section to store the heat medium, and the low-temperature side storage has a low-temperature side outlet through which the heat medium flows into the temperature control circuit. A chamber is provided, and the low-temperature side storage chamber and the high-temperature side storage chamber are communicated with each other at their upper portions, so that even if the amount of heat medium is uneven in the low-temperature heat medium circuit and the high-temperature heat medium circuit, It becomes possible to adjust the amount of the heat medium between the low temperature side storage chamber and the high temperature side storage chamber of the storage section.

Further, by providing another temperature control section for switching whether or not the heat medium in the low-temperature side storage chamber is introduced into the temperature control circuit as in the fifth aspect of the invention, it is possible to accurately cool the object to be temperature controlled. It becomes possible.

In this case, when the temperature of the heat medium flowing through the temperature control circuit reaches or exceeds a predetermined value, the other temperature control section introduces the heat medium from the low-temperature storage chamber into the temperature control circuit. By doing so, overheating of the temperature control target can be reliably prevented.

Further, if the temperature control unit is composed of a channel switching valve that has a temperature sensing part that senses the temperature of the fluid flowing inside and switches the channel of the fluid as in the seventh aspect of the invention, electronic control can be performed. is also unnecessary, and the cost of the system can be reduced.

Here, as an object to be temperature controlled, for example, a battery mounted on an electric vehicle, an electric motor for running the electric vehicle, and an inverter for driving the electric motor for running can be considered as the object of temperature control.

The high-temperature heat medium circuit includes a heater core for circulating the heat medium heated by the heating unit to heat the interior of the vehicle, and the low-temperature heat medium circuit includes a cooling It is conceivable to have a cooler core for cooling the interior of the vehicle by circulating the heat medium cooled by the section. a heat pump circuit having a radiator for dissipating heat from the refrigerant discharged from the compressor, a decompression section for decompressing the refrigerant radiated by the radiator, and a heat absorber for absorbing heat from the decompressed refrigerant by the decompression section, and the heating section of the high temperature heat medium circuit are provided in a heat exchange relationship, and the heat absorber and the cooling section of the low temperature heat medium circuit are provided in a heat exchange relationship.

As a result, the heat pump circuit, the high-temperature heat medium circuit, and the low-temperature heat medium circuit for air-conditioning the interior of the electric vehicle can be used to control the temperature of the temperature control target. Further, when there is no need to heat the temperature control target, the heat medium flowing through the high temperature heat medium circuit flows through the bypass high temperature side storage chamber of the storage unit as described above, so that the heater core receives a higher temperature. The heat medium can be circulated, and heating of the passenger compartment can be performed without any trouble. Furthermore, when there is no need to cool the object to be temperature controlled, the heat medium flowing through the low-temperature heat medium circuit is not introduced into the temperature control circuit as described above. It becomes possible to perform air conditioning in the passenger compartment without any trouble.

1 is a block diagram of one embodiment of a heat management system of the present invention (Embodiment 1; first path state in heating mode); FIG. FIG. 2 is a cross-sectional view of a thermovalve as an example of the temperature adjustment unit of the heat management system of FIG. 1; FIG. 2 is a configuration diagram extracting a temperature control circuit and a storage unit of the heat management system of FIG. 1; FIG. 2 is a plan cross-sectional view of the reservoir of FIG. 1; FIG. 2 is a configuration diagram extracting a temperature control circuit and a reservoir in the case of FIG. 1; 2 is a configuration diagram illustrating a second path state in a heating mode of the heat management system of FIG. 1; FIG. FIG. 7 is a configuration diagram extracting a temperature control circuit and a reservoir in the case of FIG. 6; 2 is a configuration diagram of the heat management system of FIG. 1 in a cooling mode; FIG. FIG. 10 is a block diagram of a temperature control circuit and a reservoir extracted from a heat management system according to another embodiment of the present invention (embodiment 2); FIG. 10 is a plan cross-sectional view of the reservoir of FIG. 9;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

(1) Configuration of Thermal Management System 1 FIG. 1 shows the configuration of a thermal management system 1 according to an embodiment of the present invention. The thermal management system 1 of the embodiment air-conditions the interior of an electric vehicle such as an electric vehicle or a hybrid vehicle, and also temperature-controls temperature control objects such as a battery 2, an electric motor for traveling, an inverter, etc., which are taken up in the embodiment. The air conditioner for a vehicle is configured to include a heat pump circuit 3 , a heat medium circuit 4 , and a control device 6 . In the present application, the concept of battery also includes a fuel cell.

The heat pump circuit 3 of the embodiment includes a compressor 7 that compresses a refrigerant (freon refrigerant), a radiator 8 that dissipates heat from the refrigerant (high-temperature refrigerant) discharged from the compressor 7, and a refrigerant that has dissipated heat from the radiator 8. A refrigerant circuit in which an expansion valve 9 as a decompression unit that decompresses, a heat absorber 11 that absorbs heat by evaporating the refrigerant decompressed by the expansion valve 9, and an accumulator 12 are sequentially connected in a ring by refrigerant pipes. It is usually installed in a so-called engine room under the hood of an electric vehicle.

The heat medium circuit 4 is a circuit through which a heat medium such as water flows. First to third pumps 21 to 23 as units, a radiator 29, thermo valves 30 and 31 as temperature control units of the present invention, eight three-way valves 32 to 39, a check valve 41, and a predetermined capacity , which are connected by heat medium pipes as will be described later.

The three-way valves 32 to 39 of the embodiment have three connection ports, and can be switched between a state in which all connection ports are communicated and a state in which only two of them are communicated (four states in total). It is a valve device that makes it possible.

In this case, the outlet of the cooling unit 13 is connected to the first connection port of the three-way valve 32 by the heat medium pipe C1, and the second connection port of the three-way valve 32 is connected to the third connection port of the three-way valve 33 by the heat medium pipe C2. It is A first connection port of the three-way valve 33 is connected to an inlet of the cooler core 16 by a heat medium pipe C4, and an outlet of the cooler core 16 is connected to a first connection port of the three-way valve 34 by a heat medium pipe C5. The second connection port of the three-way valve 34 is connected to the first connection port of the three-way valve 35 by the heat medium pipe C6, and the second connection port of the three-way valve 35 is connected to the inlet of the first pump 21 by the heat medium pipe C7. there is The outlet of the first pump 21 is connected to the inlet of the cooling section 13 by a heat medium pipe C8.

A second connection port of the three-way valve 33 is connected to an upper portion of a low-temperature side storage chamber 61 of the storage section 26, which will be described later, through a heat medium pipe C10. A low temperature side outlet 61A (FIG. 3) is formed at the bottom of the low temperature side storage chamber 61, and one end of a heat medium pipe C42 is connected to the low temperature side outlet 61A. The other end of the heat medium pipe C42 is connected to a main valve port MV, which will be described later, of the thermovalve 30 (temperature adjustment unit). 41 inlet. The outlet of the check valve 41 is connected to the third connection port of the three-way valve 34 through the heat medium pipe C13. The direction of the three-way valve 34 of the check valve 41 is the forward direction.

A mixed water port XV, which will be described later, of the thermo valve 30 is connected to the inlet of the third pump 23 through a heat medium pipe C41, and the outlet of the third pump 23 is connected to the inlet of the battery 2 (temperature control target) through a heat medium pipe C15. It is connected. A jacket structure having an inlet and an outlet through which a heat medium flows is formed around the battery 2, and the battery 2 is configured to exchange heat with the heat medium through this jacket structure. The inlet of the battery 2 is the inlet of this jacket structure, and the outlet of the battery 2, i.e., the outlet of the jacket structure, is communicated and connected to the upper part of a temperature control side reservoir 63 of the reservoir 26, which will be described later, by a heat medium pipe C16. It is A temperature control side outlet 63A (FIG. 3) is formed at the bottom of the temperature control side storage chamber 63, and the temperature control side outlet 63A is connected to the heat medium pipe C11 and the heat medium pipe C12 by a heat medium pipe C46. connected to the dots.

A later-described bypass valve port BV of the thermo valve 31 is connected to an upper portion of a later-described heat exchange high temperature side storage chamber 64 of the storage section 26 through a heat medium pipe C48. A first high temperature side outlet 64A (FIG. 3) is formed at the bottom of the high temperature side storage chamber 64 for heat exchange, and one end of the heat medium pipe C43 is connected to the first high temperature side outlet 64A. ing. A main valve port MV of the thermo valve 31, which will be described later, is communicated with the upper portion of a bypass high-temperature side storage chamber 66, which will be described later, of the storage section 26 through a heat medium pipe C49.

The bypass high temperature side storage chamber 66 and the heat exchange high temperature side storage chamber 64 described above constitute the high temperature side storage chamber 65 of the present invention. A second high temperature side outlet 66A (FIG. 3) is formed at the bottom of the bypass high temperature side storage chamber 66, and one end of the heat medium pipe C47 is connected to the second high temperature side outlet 66A. ing. The other ends of the heat medium pipe C43 and the heat medium pipe C47 are connected, and this connection point is connected to the inlet of the heater core 17 by the heat medium pipe C45. A mixed water port XV of the thermo valve 31, which will be described later, is connected to a heat medium pipe C19.

The third pump 23, the heat medium pipe C15, the jacket structure of the battery 2, the heat medium pipe C16, the temperature control side storage chamber 63 of the storage unit 26, the heat medium pipe C46, the heat medium pipe C11, the thermo valve 30, the heat medium pipe C41, the heat medium pipe C10, the low-temperature side reservoir 61 of the reservoir 26, the heat medium pipe C42, the heat medium pipe C12, the check valve 41, and the heat medium pipe C13 constitute the temperature control circuit 42 in the present invention. constitutes

Also, the cooling unit 13, the heat medium pipe C1, the three-way valve 32, the heat medium pipe C2, the three-way valve 33, the heat medium pipe C4, the cooler core 16, the heat medium pipe C5, the three-way valve 34, the heat medium pipe C6, the three-way valve 35, The heat medium pipe C7, the first pump 21, and the heat medium pipe C8 constitute a low-temperature heat medium circuit 43 in the present invention in the cooling mode, which will be described later. The heat medium pipe C10, the low-temperature side reservoir 61 of the reservoir 26, and the heat medium pipe C42 form a connecting portion between the low-temperature heat medium circuit 43 and the temperature control circuit 42 in this case. The thermo valve 30 is connected to the heat medium pipe C42 (connecting portion) and controls the inflow of the heat medium of the low temperature heat medium circuit 43 from the low temperature side storage chamber 61 to the temperature control circuit 42 .

Also, the outlet of the heating unit 14 is connected to the third connection port of the three-way valve 36 through the heat medium pipe C17. The first connection port of the three-way valve 36 is connected to the mixed water port XV of the thermo valve 31 through the heat medium pipe C19 as described above. 26 is connected to the bypass high temperature side storage chamber 66 . A bypass valve port BV of the thermo valve 31, which will be described later, is connected to the heat exchange high temperature side reservoir 64 of the reservoir 26 through the heat medium pipe C48 as described above.

As described above, the heat medium pipe C45 is connected to the inlet of the heater core 17, and the outlet of the heater core 17 is connected to the first connection port of the three-way valve 38 by the heat medium pipe C20. The second connection port of the three-way valve 38 is connected to the inlet of the second pump 22 through the heat medium pipe C21, and the outlet of the second pump 22 is connected to the inlet of the heating unit 14 through the heat medium pipe C22.

The heating unit 14, the heat medium pipe C17, the three-way valve 36, the heat medium pipe C19, the thermo valve 31, the heat medium pipe C48, the heat medium pipe C49, the heat exchange high temperature side reservoir 64 of the reservoir 26, and the bypass high temperature side The storage chamber 66, the heat medium pipe C43, the heat medium pipe C47, the heat medium pipe C45, the heater core 17, the heat medium pipe C20, the three-way valve 38, the heat medium pipe C21, the second pump 22, and the heat medium pipe C22 are the high-temperature components of the present invention. A heating medium circuit 44 is configured. Further, the thermo valve 31 performs control to switch between introducing the heat medium of the high temperature heat medium circuit 44 into the heat exchange high temperature side storage chamber 64 of the storage section 26 and introducing it into the bypass high temperature side storage chamber 66. .

The second connection port of the three-way valve 36 is connected to the first connection port of the three-way valve 37 through a heat medium pipe C24, and the third connection port of the three-way valve 37 is connected to the inlet of the radiator 29 through a heat medium pipe C25. It is The outlet of the radiator 29 is connected to the second connection port of the three-way valve 39 through the heat medium pipe C26, and the first connection port of the three-way valve 39 is connected to the third connection port of the three-way valve 38 through the heat medium pipe C27. there is

Furthermore, the second connection port of the three-way valve 37 is connected to the third connection port of the three-way valve 32 through a heat medium pipe C28, and the third connection port of the three-way valve 35 is connected to the third connection port of the three-way valve 39 through a heat medium pipe C29. connected to the connection port. Cooling unit 13, heat medium pipe C1, three-way valve 32, heat medium pipe C28, three-way valve 37, heat medium pipe C25, radiator 29, heat medium pipe C26, three-way valve 39, heat medium pipe C29, three-way valve 35, heat medium The pipe C7, the first pump 21, and the heat medium pipe C8 constitute a low-temperature heat medium circuit 43A in the present invention in the heating mode, which will be described later. In this case, the heat medium pipe C2, the heat medium pipe C10, the low temperature side storage chamber 61 of the storage unit 26, and the heat medium pipe C42 form a connecting portion between the low temperature heat medium circuit 43 and the temperature control circuit 42 in this case.

In FIG. 1, reference numeral 46 denotes an HVAC unit that supplies air for air conditioning to the interior of the electric vehicle. is provided. The cooler core 16 and the heater core 17 described above are sequentially arranged in the air flow passage 47 on the downstream side of the indoor fan 49 .

(2) Configuration of Storing Portion 26 Here, the inside of the storing portion 26 is shown enlarged in FIGS. 3 and 4. FIG. Reference numeral 67 in the drawing denotes a partition wall that separates the high temperature side storage chamber 64 for heat exchange and the temperature control side storage chamber 63 . Since the partition wall 67 extends from the bottom to the ceiling of the reservoir 26, the heat medium does not flow between the heat exchange high temperature side reservoir 64 and the temperature control side reservoir 63, but the partition wall 67 allows heat to flow. The high-temperature storage chamber 64 for heat exchange of the high-temperature storage chamber 65 and the temperature control storage chamber 63 are partitioned in a heat exchange relationship. It is partitioned by walls 67 .

Reference numeral 68 in the drawing denotes a partition wall that separates the low temperature storage chamber 61 and the temperature control storage chamber 63 from each other. Since the partition wall 68 also extends from the bottom to the ceiling of the reservoir 26 , the heat medium does not flow between the low temperature reservoir 61 and the temperature control reservoir 63 . Moreover, the partition wall 68 is made of a heat insulating material (hard resin, etc.), so that the temperature control side storage chamber 63 and the low temperature side storage chamber 61 are insulated from each other.

Reference numeral 69 in the drawing denotes a partition wall that divides the inside of the high temperature side storage chamber 65 into a high temperature side storage chamber 64 for heat exchange and a high temperature side storage chamber 66 for bypass. The partition wall 69 is made of a heat insulating material (hard resin or the like) and stands up from the bottom of the reservoir 26 but does not reach the ceiling. As a result, the heat exchange high temperature side storage chamber 64 and the bypass high temperature side storage chamber 66 are insulated, but are communicated at their upper portions. Further, the heat exchange high temperature side storage chamber 64 faces the partition wall 67, and the internal heat medium is in contact with the partition wall 67, but the bypass high temperature side storage chamber 66 does not face the partition wall 67. , the heat medium inside does not come into contact with the partition wall 67 .

Although the reservoir 26 of the embodiment has a substantially cylindrical shape, the partition wall 67 described above is positioned in the central portion of the reservoir 26, and the partition wall 68 and the partition wall 69 are substantially concentric with the reservoir 26. It has an arcuate shape (Fig. 4). As a result, the temperature control side storage chamber 63 and the heat exchange high temperature side storage chamber 64 are located inside the storage section 26, and the low temperature side storage chamber 61 and the bypass high temperature side storage chamber 66 are located outside them. The low-temperature storage chamber 61 and the bypass high-temperature storage chamber 66 are partitioned from each other by partition walls 71 and 72 that extend from the partition wall 67 . The partition walls 71 and 72 are made of a heat-insulating material (hard resin or the like) and stand up from the bottom of the reservoir 26, but do not reach the ceiling. As a result, the low-temperature side storage chamber 61 and the high-temperature side storage chamber 65 (the high-temperature side storage chamber 66 for bypass and the high-temperature side storage chamber 64 for heat exchange) are insulated from each other, but are communicated at their upper portions.

(3) Configuration of Thermovalves (Temperature Control Units) 30 and 31 FIG. 2 is a sectional view of the thermovalves (temperature control units) 30 and 31 described above. The thermo valves 30 and 31 have basically the same structure, but are used differently. That is, the thermo valve 30 is connected to the heat medium pipe C42 (the connection portion between the temperature control circuit 42 and the low temperature heat medium circuits 43 and 43A), and the thermo valve 31 is connected to the heat medium pipe C19 (the temperature control circuit 42 and the high temperature heat medium circuit 44). connection part).

Each of them includes a housing 51 , a main valve 52 , a bypass valve 53 , a temperature sensing portion 54 and springs 56 and 57 . The housing 51 is formed with the aforementioned main valve port MV, bypass valve port BV, and mixed water port XV, and a mixing chamber 58 is provided inside the housing 51 .

Main valve port MV communicates with mixing chamber 58 through opening 59 and bypass valve port BV communicates with mixing chamber 58 . The main valve 52 opens and closes the opening 59 by the action of the temperature sensing portion 54 and the springs 56 and 57, and the bypass valve 53 opens and closes the bypass valve port BV. Incidentally, the mixed water port XV communicates with the mixing chamber 58 .

The temperature sensing part 54 is connected to the main valve 52 and the bypass valve 53, and has a structure in which wax (for example, paraffin wax) is incorporated and expands and contracts. The temperature sensing part 54 expands and contracts according to the temperature of the heat medium in the mixing chamber 58, moves the main valve 52 and the bypass valve 53, and adjusts the opening degrees of the opening 59 and the bypass valve port BV.

The temperature of the heat medium in the mixing chamber 58 of the thermo valve 31 is the temperature of the heat medium flowing from the mixed water port XV (the temperature of the heat medium flowing through the high-temperature heat medium circuit 44) as described later. Further, the temperature of the heat medium in the mixing chamber 58 of the thermo valve 30 is the temperature of the heat medium flowing from the bypass valve port BV as described later, or the temperature of the heat medium and the heat medium flowing from the main valve port MV through the opening 59. It is the temperature of the heat medium mixed with the mixed heat medium, and the temperature of the heat medium in any mixing chamber 58 is also the temperature of the heat medium flowing through the temperature control circuit 42 .

The heat medium pipe C49 is connected to the main valve port MV of the thermo valve 31 as described above, the heat medium pipe C48 is connected to the bypass valve port BV, and the mixed water port XV is connected to the heat medium pipe C19. there is When the temperature of the heat medium in the mixing chamber 58 is lower than a predetermined value T1 (eg, +30° C.), the thermo valve 31 causes the main valve 52 to close the opening 59 and the bypass valve 53 to open the bypass valve port BV. As a result, the thermo valve 31 introduces the heat medium of the high-temperature heat medium circuit 44 from the mixed water port XV into the mixing chamber 58, and flows it from the bypass valve port BV to the heat medium pipe C48, so that The high temperature heat medium of the high temperature heat medium circuit 44 is introduced into the high temperature storage chamber 64 .

On the other hand, in the thermo valve 31, when the temperature of the heat medium in the mixing chamber 58 reaches or exceeds a predetermined value T1, the main valve 52 opens the opening 59 and the bypass valve 53 closes the bypass valve port BV. As a result, the thermo valve 31 causes the heat medium that has flowed in from the mixed water port XV to flow from the opening 59 to the main valve port MV, flow out to the heat medium pipe C49, and flow into the high temperature side reservoir 66 for bypass of the reservoir 26. A hot heat transfer medium in circuit 55 is introduced.

On the other hand, the main valve port MV of the thermo valve 30 is connected to the heat medium pipe C42 connected to the low temperature side reservoir 61 of the reservoir 26 as described above, and the bypass valve port BV is connected to the heat medium pipe C11. A heat medium pipe C41 is connected to the mixed water port XV. When the temperature of the heat medium in the mixing chamber 58 is lower than another predetermined value T2 (for example, +40° C.) higher than the predetermined value T1, the main valve 52 closes the opening 59 and the bypass valve 53 closes the bypass valve. When the port BV is opened and the temperature of the heat medium in the mixing chamber 58 reaches or exceeds a predetermined value T2, the main valve 52 begins to open the opening 59, and the heat medium (low-temperature A heat medium) is introduced into the mixing chamber 58 . The main valve 52 of the thermovalves 30 and 31 is structured so that a slight amount of heat medium flows into the mixing chamber 58 from the main valve port MV while the opening 59 is closed.

The operation of the heat management system 1 of the embodiment with the above configuration will be described.
(4) Heating Mode and Temperature Control of Battery 2 (Temperature Control Target) First, the heating mode by the controller 6 will be described. Each arrow in FIG. 1 indicates how the heat medium flows in the heating mode. In the heating mode, the control device 6 sets the three-way valve 32 to communicate the heat medium pipes C1, C28, and C2, and sets the three-way valve 33 to communicate only the heat medium pipes C2 and C10. Also, the three-way valve 34 is set to a state in which only the heat medium pipe C6 and the heat medium pipe C13 are communicated, and the three-way valve 35 is set to a state in which the heat medium pipes C6, C7, and C29 are communicated. In addition, the three-way valve 36 is put in a state in which only the heat medium pipe C17 and the heat medium pipe C19 are communicated, and the three-way valve 37 is put in a state in which only the heat medium pipe C25 and the heat medium pipe C28 are communicated. Further, the three-way valve 39 is switched to a state in which only the heat medium pipe C26 and the heat medium pipe C29 are communicated, and the three-way valve 38 is switched to a state in which only the heat medium pipe C20 and the heat medium pipe C21 are communicated.

Then, the compressor 7, the pumps 21, 22, 23 and the indoor fan 49 are operated. As a result, the heat medium discharged from the first pump 21 is sucked into the first pump 21 through the cooling unit 13 and the radiator 29 in order, and is circulated in the low-temperature heat medium circuit 43A. In addition, under low outside air temperature conditions below freezing, the temperature of the heat medium flowing into the mixing chamber 58 from the bypass valve port BV of the thermo valve 30 is low (lower than the predetermined value T2). The opening 59 is closed by the main valve 52 and the bypass valve port BV is opened by the bypass valve 3 based on the temperature of the heat medium. As a result, the heat medium is circulated in a closed loop including the temperature control side storage chamber 63 of the temperature control circuit 42 (indicated by arrows in FIG. 1).

Also, the heat medium discharged from the second pump 22 reaches the thermo valve 31 through the heating section 14 . Here, under low outside air temperature conditions below freezing, the temperature of the heat medium flowing into the mixing chamber 58 from the mixed water port XV of the thermo valve 31 is also low (lower than the predetermined value T1). The opening 59 is closed by the main valve 52 and the bypass valve port BV is opened by the bypass valve 53 based on the temperature of the heat medium inside. It is introduced into the replacement high temperature side storage chamber 64 and temporarily stored.

Since the heat medium in the heat exchange high temperature side storage chamber 64 of the storage section 26 exchanges heat with the heat medium in the temperature control side storage chamber 63 via the partition wall 67, the heat in the temperature control side storage chamber 63 The medium is heated. This heated heat medium is sucked into the third pump 23 through the heat medium pipe C46, the heat medium pipe C11, the thermo valve 30, and the heat medium pipe C41. Then, the heat is circulated from the heat medium pipe C15 to the battery 2 to heat the battery 2 . Thereby, the warm-up of the battery 2 is performed.

The heat medium in the heat exchange high temperature side storage chamber 64 of the storage section 26 flows into the heater core 17 through the heat medium pipe C43 and the heat medium pipe C45. The heat medium flowing out of the heater core 17 is sucked into the second pump 22 and circulated in the high-temperature heat medium circuit 44 . A solid arrow in FIG. 5 indicates this state, which is defined as the first path state of the heat medium circuit 4 .

When the compressor 7 is operated, the refrigerant releases heat in the radiator 8 and absorbs heat in the heat absorber 11 . This heated heat medium is introduced into the heat exchange high temperature side storage chamber 64 of the storage section 26 as described above, and heats the heat medium in the temperature control side storage chamber 63 via the partition wall 67 . Since the heat medium in the temperature control storage chamber 63 is circulated to the battery 2, the battery 2 is heated. Further, since the heat medium passing through the heat exchange high temperature side storage chamber 64 of the storage portion 26 is then circulated to the heater core 17, the air supplied from the indoor fan 49 to the vehicle interior is heated by the heater core 17, thereby The vehicle interior is heated.

On the other hand, in the heat absorber 11, the heat medium flowing through the cooling section 13 is cooled by the refrigerant. This cooled low-temperature heat medium is circulated to the radiator 29 and warmed by the outside air. That is, it draws up heat in the outside air. The heat thus pumped up is conveyed to the radiator 8 by the heat pump circuit 3, and is used for heating the battery 2 and heating the interior of the vehicle.

After starting operation. The temperature of the heat medium circulating in the high temperature heat medium circuit 44 rises. Then, when the temperature of the heat medium flowing into the mixing chamber 58 from the mixed water port XV of the thermo valve 31 rises above the predetermined value T1 (+30° C.), the temperature sensing part 54 detects the temperature of the heat medium in the mixing chamber 58. By moving the bypass valve 53 and the main valve 52 based on the temperature of , the bypass valve port BV is closed and the opening 59 is opened.

As a result, the heat medium flowing in from the mixed water port XV of the thermo valve 31 passes through the mixing chamber 58 and the opening 59, flows out from the main valve port MV to the heat medium pipe C49, and reaches the bypass high temperature side of the reservoir 26. It is introduced into the storage chamber 66 and temporarily stored. Since the heat medium in the bypass high temperature side storage chamber 66 of the storage section 26 is not in contact with the partition wall 67, the heat medium in the high temperature heat medium circuit 44 bypasses the heat exchange high temperature side storage chamber 64 and flows into the storage section 26. , and the heating of the heat medium in the temperature control side storage chamber 63 is stopped. This prevents excessive heating of the battery 2 .

The heat medium in the bypass high-temperature side storage chamber 66 of the storage section 26 flows into the heater core 17 through the heat medium pipe C47 and the heat medium pipe C45. The heat medium flowing out of the heater core 17 is sucked into the second pump 22 and circulated in the high-temperature heat medium circuit 44 . Solid-line arrows in FIGS. 6 and 7 indicate this state, which is defined as the second path state of the heat medium circuit 4 .

Thereafter, the self-heating of the battery 2 increases the temperature of the heat medium circulating in the closed loop of the temperature control circuit 42 . When the temperature of the heat medium flowing into the mixing chamber 58 from the bypass valve port BV of the thermo valve 30 reaches or exceeds the predetermined value T2 (+40° C.), the temperature sensing part 54 detects that the heat medium in the mixing chamber 58 is Based on the temperature, the main valve 52 is moved to start opening the opening 59 . As a result, part of the low-temperature heat medium flowing through the low-temperature heat medium circuit 43A is split by the three-way valve 32, the heat medium pipe C2, the three-way valve 33, the heat medium pipe C10, the low-temperature side reservoir 61 of the reservoir 26, the heat It enters into the thermo valve 30 from the main valve port MV via the medium pipe C42 and begins to flow into the mixing chamber 58 from the opening 59 (indicated by the dashed arrow in FIG. 7).

The heat medium that has flowed in from the opening 59 is mixed with the heat medium that has flowed in from the bypass valve port BV in the mixing chamber 58, and flows out from the mixed water port XV to the heat medium pipe C41. Then, it is sucked into the third pump 23 and discharged toward the battery 2 . As a result, the battery 2 is cooled because the heat medium whose temperature is lowered is circulated in the battery 2 .

The heat medium that has flowed out to the heat medium pipe C16 through the battery 2 reaches the temperature control side reservoir 63 of the reservoir 26 and the heat medium pipe C46. From the heat medium pipe C46, the heat medium originally circulating in the closed loop of the temperature control circuit 42 flows into the heat medium pipe C11, and the heat medium pipe C10 is introduced from the low-temperature heat medium circuit 43A. The heat medium is branched to the heat medium pipe C12, passes through the check valve 41 and the heat medium pipe C13, reaches the three-way valve 34, and is returned to the low-temperature heat medium circuit 43A (indicated by the dashed arrow in FIG. 7). That is, the heat medium pipe C46, the heat medium pipe C12, the check valve 41, and the heat medium pipe C13 form a path for returning the heat medium from the temperature control circuit 42 to the low-temperature heat medium circuit 43A, and the reservoir 26 is provided on this path. It means that This is the third path state of the heat medium circuit 4 .

At this time, the heat medium flowing through the high temperature heat medium circuit 44 is stored in the bypass high temperature side storage chamber 66 of the storage section 26, but both chambers 61 and 66 are insulated by the partition walls 68, 71 and 72. Therefore, heat exchange between the heat medium of the high temperature heat medium circuit 44 and the heat medium of the low temperature heat medium circuit 43A is prevented or minimized.

The battery 2 is cooled by the low temperature heat medium introduced from the low temperature heat medium circuit 43A as described above, and the temperature of the heat medium (mixed heat medium) in the mixing chamber 58 of the thermo valve 30 rises to the predetermined value T2. When the temperature becomes lower, the temperature sensing part 54 closes the opening 59 by the main valve 52 based on the temperature of the heat medium in the mixing chamber 58 . As a result, the state is returned to the second path state, and the heat medium returns to the form of circulating in the closed loop of the temperature control circuit 42 . As described above, the battery 2 is maintained within the optimum temperature range (for example, a target temperature of +10° C. or higher and +40° C. or lower).

Further, as described above, the upper portions of the low temperature side storage chamber 61 and the high temperature side storage chamber 65 (the high temperature side storage chamber 64 for heat exchange and the high temperature side storage chamber 66 for bypass) in the storage section 26 are communicated with each other. If the amounts of the heat medium in the medium circuit 43A and the high temperature heat medium circuit 44 are uneven and the heat medium in either the low temperature side storage chamber 61 or the high temperature side storage chamber 65 exceeds the partition walls 71 and 72, Since the heat medium flows into the other chamber from the chamber beyond, the amount of heat medium in the high temperature heat medium circuit 44 and the low temperature heat medium circuit 43A is adjusted in the low temperature side storage chamber 61 and the high temperature side storage chamber 65. It will be. Also, either the low temperature storage chamber 61 or the high temperature storage chamber 65 will not become full.

In addition, the heat exchange high temperature side storage chamber 64 and the bypass high temperature side storage chamber 66 are also communicated at the top, and the heat in either the heat exchange high temperature side storage chamber 64 or the bypass high temperature side storage chamber 66 is If the medium increases and exceeds the partition wall 69, it will flow into the other, so that either chamber will not become full.

(5) Cooling Mode and Temperature Control of Battery (Temperature Control Target) 2 Next, the cooling mode by the control device 6 will be described. Each arrow in FIG. 8 indicates how the heat medium flows in the cooling mode. In the cooling mode, the control device 6 sets the three-way valve 32 in a state in which only the heat medium pipes C1 and C2 are communicated, and the three-way valve 33 in a state in which the heat medium pipes C2, C4, and C10 are communicated. In addition, the three-way valve 34 is put in a state in which the heat medium pipes C5, C6, and C13 are communicated, and the three-way valve 35 is put in a state in which only the heat medium pipes C6 and C7 are communicated. In addition, the three-way valve 36 is put in a state in which only the heat medium pipe C17 and the heat medium pipe C24 are communicated, and the three-way valve 37 is put in a state in which only the heat medium pipe C24 and the heat medium pipe C25 are communicated. Also, the three-way valve 39 is switched to a state in which only the heat medium pipe C26 and the heat medium pipe C27 are communicated, and the three-way valve 38 is switched to a state in which only the heat medium pipe C27 and the heat medium pipe C21 are communicated.

Then, the compressor 7, the pumps 21, 22, 23 and the indoor fan 49 are operated. As a result, the heat medium discharged from the first pump 21 is circulated in the low-temperature heat medium circuit 43 while being sucked into the first pump 21 through the cooling unit 13 and the cooler core 47 in sequence. Also, the heat medium discharged from the second pump 22 is circulated by being sucked into the second pump 22 through the heating unit 14 and the radiator 29 in sequence.

On the other hand, when the compressor 7 is operated, the refrigerant releases heat in the radiator 8 and absorbs heat in the heat absorber 11 in the same manner as described above. Cooled. Since the cooled low-temperature heat medium is circulated to the cooler core 16, the air supplied from the indoor fan 49 into the vehicle interior is cooled by the cooler core 16, thereby cooling the vehicle interior. On the other hand, in the radiator 8, the heat medium flowing through the heating portion 14 is heated by the high-temperature refrigerant. This heated high-temperature heat medium is circulated to the radiator 29 and radiates heat to the outside air.

At the beginning of the operation, the temperature of the heat medium circulating in the temperature control circuit 42 is also lower than the above-described predetermined value T2, so the heat medium discharged from the third pump 23 passes through the battery (temperature control target) 2 and reaches the reservoir 26. It reaches the temperature control storage chamber 63 , passes through the thermo valve 30 and is sucked into the third pump 23 again, and is circulated in the closed loop of the temperature control circuit 42 . That is, the thermo valve 30 keeps the bypass valve port BV open by the bypass valve 53 and closes the opening 59 by the main valve 52 based on the temperature of the heat medium flowing into the mixing chamber 58 from the bypass valve port BV. , the third pump 23 circulates the heat medium in the closed loop of the temperature control circuit 42 . A solid line arrow in FIG.

Thereafter, the self-heating of the battery 2 increases the temperature of the heat medium circulating in the closed loop of the temperature control circuit 42 . When the temperature of the heat medium flowing into the mixing chamber 58 from the bypass valve port BV of the thermo valve 30 reaches or exceeds the predetermined value T2 (+40° C.), the temperature sensing part 54 detects that the heat medium in the mixing chamber 58 is Based on the temperature, the main valve 52 is moved to start opening the opening 59 . As a result, part of the low temperature heat medium flowing through the low temperature heat medium circuit 43 is split by the three-way valve 33 and introduced into the low temperature side reservoir 61 of the reservoir 26 through the heat medium pipe C10. The low-temperature heat medium in 61 enters the thermo-valve 31 through the main valve port MV and begins to flow into the mixing chamber 58 through the opening 59 (indicated by the dashed arrow in FIG. 8).

The heat medium flowing from the opening 59 is mixed with the heat medium flowing from the bypass valve port BV of the thermo valve 30 in the mixing chamber 58, and flows out from the mixed water port XV to the heat medium pipe C41. Then, it is sucked into the third pump 23 and discharged toward the battery 2 . As a result, the battery 2 is cooled because the heat medium whose temperature is lowered is circulated in the battery 2 .

From the heat medium that has flowed out to the heat medium pipe C16 through the battery 2 and entered the temperature control side storage chamber 63 of the storage unit 26, the heat medium that originally circulated in the closed loop of the temperature control circuit 42 is heated. The heat medium flowing from the medium pipe C46 to the heat medium pipe C11 and introduced from the low-temperature heat medium circuit 43 through the heat medium pipe C10 is diverted to the heat medium pipe C12, and flows through the check valve 41 and the heat medium pipe C13. It reaches the three-way valve 34 and is returned to the low-temperature heat medium circuit 43 (indicated by the dashed arrow in FIG. 8). That is, the heat medium pipe C46, the heat medium pipe C12, the check valve 41, and the heat medium pipe C13 form a path for returning the heat medium from the temperature control circuit 42 to the low-temperature heat medium circuit 43, and the reservoir 26 is provided on this path. It means that This state is referred to as the fifth path state of the heat medium circuit 4 .

The battery 2 is cooled by the low temperature heat medium introduced from the low temperature heat medium circuit 43 as described above, and the temperature of the heat medium (mixed heat medium) in the mixing chamber 58 of the thermo valve 30 rises to the predetermined value T2. When the temperature becomes lower, the temperature sensing part 54 of the thermo valve 30 closes the opening 59 by the main valve 52 based on the temperature of the heat medium in the mixing chamber 58 . As a result, the state is returned to the fourth path state, and the heat medium returns to the form of circulating in the closed loop of the temperature control circuit 42 . As described above, even in the cooling mode, the battery 2 is maintained within the optimum temperature range (for example, a target temperature of +10° C. or higher and +40° C. or lower).

Even in this cooling mode, when the amount of heat medium in the low-temperature storage chamber 61 exceeds the partition walls 71 and 72, it flows into the high-temperature storage chamber 66, so that the low-temperature storage chamber 61 becomes full. You won't get lost.

Next, another embodiment of the reservoir 26 will be described with reference to FIGS. 9 and 10. FIG. 3 and 4 have the same or similar functions.
(6) Configuration of Storage Unit 26 (Part 2)
In the case of this embodiment, the temperature control side storage chamber 63 is constructed within the tank 73 accommodated in the storage section 26 . The tank 73 is made of a material (metal or the like) with high thermal conductivity, and the walls forming the tank 73 are in contact with the heat medium in the high temperature side storage chamber 64 for heat exchange of the high temperature side storage chamber 65 for temperature control. This constitutes the partition wall of the present invention that partitions the heat exchange high temperature side storage chamber 64 and the temperature control side storage chamber 63 in a state of having a heat exchange relationship with the heat medium in the side storage chamber 63 . In this case as well, no heat medium flows between the heat exchange high temperature side storage chamber 64 and the temperature control side storage chamber 63 .

In the case of this embodiment, similarly, the interior of the substantially cylindrical storing portion 26 is partitioned into an inner side and an outer side by a partition wall 74 having a concentric cylindrical shape and rising from the bottom portion of the storing portion 26. The inner side serves as a high-temperature side storage chamber 64 for heat exchange, and the tank 73 is arranged in this high-temperature side storage chamber 64 for heat exchange (FIG. 10). Further, the outside of the partition wall 74 is partitioned into two chambers by partition walls 76 and 77, one of which is a bypass high temperature side storage chamber 66 and the other of which is a low temperature side storage chamber 61 .

With such a configuration, the heat exchange high temperature side storage chamber 64 faces the tank 73 (partition wall), and the internal heat medium is in contact with the tank 73 (partition wall). (partition wall), and the internal heat medium does not come into contact with the tank 73 (partition wall). Also, no heat medium flows between the low-temperature side storage chamber 61 and the temperature control side storage chamber 63 .

The partition walls 74, 76, and 77 are made of a heat insulating material (hard resin, etc.) and stand up from the bottom of the reservoir 26, but do not reach the ceiling. As a result, the heat exchange high temperature side storage chamber 64 and the bypass high temperature side storage chamber 66 are insulated, but are communicated at their upper portions. The low temperature storage chamber 61 and the high temperature storage chamber 65 (the high temperature storage chamber 64 for heat exchange and the high temperature storage chamber 66 for bypass) are insulated from each other, but are communicated at their upper portions. The heat medium pipe C16 enters the reservoir 26 and is connected to the upper end of the tank 73 , and the heat medium pipe C46 also enters the reservoir 26 and is connected to the lower end of the tank 73 . Other configurations are the same as those in FIGS.

With such a reservoir 26 as well, the heat medium in the heat exchange high temperature side reservoir 64 of the reservoir 26 flows through the constituent wall of the tank 73 (partition wall) to the temperature control side reservoir 63 in the tank 73 . , the heat medium in the temperature control storage chamber 63 is heated. Then, the heated heat medium is sucked into the third pump 23 through the heat medium pipe C46, the heat medium pipe C11, the thermo valve 30, and the heat medium pipe C41 in the same manner as described above, and is circulated from the heat medium pipe C15 to the battery 2. Therefore, the battery 2 can be heated and warmed up.

In addition, since the heat medium in the bypass high temperature side storage chamber 66 is not in contact with the tank 73 (partition wall), the heat medium in the high temperature heat medium circuit 44 flows into the bypass high temperature side storage chamber 66. , the heating of the heat medium in the temperature control side storage chamber 63 is stopped, and excessive heating of the battery 2 is prevented.

Furthermore, since the upper portions of the low temperature side storage chamber 61 and the high temperature side storage chamber 65 (the heat exchange high temperature side storage chamber 64 and the bypass high temperature side storage chamber 66) are communicated with each other, the low temperature side storage chamber 61 and the high-temperature side storage chamber 65, the heat medium flows from the partition wall 74, 76, or 77 into the other chamber. and in the high-temperature storage chamber 65, the amounts of heat medium in the high-temperature heat-medium circuit 44 and the low-temperature heat-medium circuit 43A are adjusted. Also, either the low temperature storage chamber 61 or the high temperature storage chamber 65 will not become full.

Furthermore, the heat exchange high temperature side storage chamber 64 and the bypass high temperature side storage chamber 66 are also communicated at the top, and either the heat exchange high temperature side storage chamber 64 or the bypass high temperature side storage chamber 66 is connected. When the heat medium increases and exceeds the partition wall 74, it flows into the other chamber, so that either chamber is not filled.

As described above, according to the present invention, the storage portion 26 for storing the heat medium is provided on the path for returning the heat medium from the temperature control circuit 42 to the low-temperature heat medium circuits 43 and 43A. A high temperature side storage chamber 65 having high temperature side outlets 64A and 66A for receiving and storing the heat medium flowing through the medium circuit 44 and returning the heat medium to the high temperature heat medium circuit 44, and the temperature control circuit 42. A state in which the heat medium in the high temperature side storage chamber 65 and the heat medium in the temperature control side storage chamber 63 have a heat exchange relationship. , the partition wall 67 (tank 73) that separates the high temperature side storage chamber 65 and the temperature adjustment side storage chamber 63 is provided. By heating the heat medium inside, the battery 2 can be warmed up. Also, by introducing the heat medium of the low-temperature heat medium circuits 43 and 43A into the temperature control circuit 42, the battery 2 can also be cooled, whereby the temperature of the battery 2 can be effectively controlled. .

In this case, since the heat medium is not introduced from the high-temperature heat-medium circuit 44 to the temperature control circuit 42, the heat medium is not biased between the high-temperature heat-medium circuit 44 and the low-temperature heat-medium circuits 43, 43A. In particular, a reservoir 26 is provided on the path for returning the heat medium from the temperature control circuit 42 to the low-temperature heat medium circuits 43 and 43A. Since it is a structure in which heat is exchanged between , it is possible to minimize the increase in cost.

In the embodiment, the high temperature side storage chamber 65 is divided into a heat exchange high temperature side storage chamber 64 in which the heat medium is in contact with the partition wall 67 (tank 73) and a bypass high temperature side storage chamber 64 in which the heat medium is not in contact with the partition wall 67 (tank 73). A thermo valve 31 is provided for switching between introducing the heat medium flowing through the high temperature heat medium circuit 44 into the high temperature side storage chamber 64 for heat exchange and introducing it into the high temperature side storage chamber 66 for bypass. Therefore, when it is necessary to heat the battery 22, the heat medium of the high temperature heat medium circuit 44 is caused to flow into the high temperature side storage chamber 64 for heat exchange by the thermo valve 31 to warm up the battery 2, thereby eliminating the need for heating. In this case, the heat medium of the high-temperature heat-medium circuit 44 is allowed to flow through the bypass high-temperature side storage chamber 66 to prevent excessive heating of the battery 2 .

In this case, in this embodiment, the thermo valve 31 introduces the heat medium into the heat exchange high temperature side storage chamber 64 when the temperature of the heat medium flowing through the high temperature heat medium circuit 44 is lower than the predetermined value T1. . Here, when the temperature of the heat medium in the high-temperature heat medium circuit 44 is low, the temperature of the heat medium in the temperature control circuit 42 is also low. If it is low, the battery 2 can be quickly warmed up by introducing the heat medium into the heat exchange high temperature side storage chamber 64 .

In the embodiment, the heat medium flowing through the low-temperature heat medium circuits 43 and 43A is introduced into the reservoir 26 to store the heat medium. A side storage chamber 61 is provided, and the low temperature side storage chamber 61 and the high temperature side storage chamber 65 are communicated with each other at their upper portions. Even if the amount is uneven, the amount of the heat medium can be adjusted between the low temperature side storage chamber 61 and the high temperature side storage chamber 65 of the storage section 26 .

Further, in the embodiment, the thermo valve 30 is provided to switch whether the heat medium in the low-temperature storage chamber 61 is introduced to the temperature control circuit 42 or not, so that the battery 2 can be cooled appropriately.

In this case, in this embodiment, the thermo valve 30 introduces the heat medium from the low-temperature storage chamber 61 into the temperature control circuit 42 when the temperature of the heat medium flowing through the temperature control circuit 42 reaches or exceeds a predetermined value T2. Therefore, overheating of the battery 2 can be reliably prevented.

Further, in the embodiment, the temperature control unit is composed of thermo valves 30 and 31, which are channel switching valves that have a temperature sensing part 54 that senses the temperature of the fluid flowing inside and switch the channel of the fluid. Therefore, electronic control becomes unnecessary, and the cost of the system can be reduced.

It should be noted that the object of temperature control can be the battery 2 mounted on the electric vehicle, the electric motor for running the electric vehicle, and the inverter for driving the electric motor for running.

In the embodiment, the high-temperature heat medium circuit 44 has a heater core 17 for circulating the heat medium heated by the heating unit 14 to heat the interior of the vehicle. Further, the low-temperature heat medium circuit 43 has a cooler core 16 for circulating the heat medium cooled by the cooling unit 13 to cool the interior of the vehicle. A heat pump circuit 3 having a compressor 7, a radiator 8, an expansion valve 9, and a heat absorber 11 is provided, and the radiator 8 and the heating section 14 of the high-temperature heat medium circuit 44 are provided in a heat exchange relationship, The heat absorber 11 and the cooling part 13 of the low-temperature heat medium circuit 43, 43A are provided in a heat exchange relationship.

As a result, the temperature of the battery 2 can be controlled using the heat pump circuit 3, the high-temperature heat medium circuit 44, and the low-temperature heat medium circuits 43 and 43A for air-conditioning the interior of the electric vehicle. Further, when the battery 2 does not need to be heated, the heat medium flowing through the high-temperature heat medium circuit 44 does not flow into the temperature control circuit 42, so that the heat medium with a higher temperature is circulated through the heater core 17. Heating of the passenger compartment can also be performed without any trouble. Furthermore, when the battery 2 does not need to be cooled, the heat medium flowing through the low-temperature heat medium circuit 43 does not flow to the battery 42, so that a heat medium with a lower temperature is circulated through the cooler core 16. cooling can be performed without any trouble.

It goes without saying that the numerical values and configurations shown in the examples are not limited to them, and can be changed without departing from the scope of the present invention. In particular, in the embodiments, the thermo valve switches the flow path of the heat medium, but in the present application, the concept includes the case where a small amount flows in both directions without completely switching. Further, in the embodiment, the vehicle air conditioner for an electric vehicle was taken as an example, but the inventions other than claims 8 to 10 are not limited to this, and the heat medium is circulated to adjust the temperature of the object to be temperature controlled. The present invention can be applied to various heat management systems.

1 Thermal management system 2 Battery (temperature control target)
3 heat pump circuit 4 heat medium circuit 7 compressor 8 radiator 9 expansion valve (decompression part)
11 heat absorber 13 cooling unit 14 heating unit 16 cooler core 17 heater core 21 first pump 22 second pump 23 third pump (circulation unit)
26 storage section 30, 31 thermo valve (temperature control section)
32 to 39 three-way valve 42 temperature control circuit 43, 43A low temperature heat medium circuit 44 high temperature heat medium circuit 61 low temperature side storage chamber 61A low temperature side outlet 63 temperature control side storage chamber 64 high temperature side storage chamber for heat exchange 64A, 66A high temperature side outlet 65 high temperature side storage chamber 66 bypass high temperature side storage chamber 67 partition wall 68, 69, 71, 72, 74, 76, 77 partition wall 73 tank (partition wall)

Claims (10)

A heat management system comprising a heat medium circuit that regulates temperature by circulating a heat medium to a temperature control target,
a temperature control circuit having a circulation unit that circulates the heat medium to the temperature control target;
a high-temperature heat medium circuit having a heating unit for heating the heat medium and circulating the heat medium heated by the heating unit;
a low-temperature heat medium circuit connected to the temperature control circuit and having a cooling unit for cooling the heat medium, through which the heat medium cooled by the cooling unit is circulated;
a storage unit provided on a path for returning the heat medium from the temperature control circuit to the low-temperature heat medium circuit and storing the heat medium;
The reservoir is
a high temperature side storage chamber into which the heat medium flowing through the high temperature heat medium circuit is introduced to store the heat medium and having a high temperature side outlet for returning the heat medium to the high temperature heat medium circuit;
a temperature control side storage chamber into which the heat medium circulating in the temperature control circuit is introduced and the heat medium is stored;
A partition wall partitions the high temperature side storage chamber and the temperature control side storage chamber in a state in which the heat medium in the high temperature side storage chamber and the heat medium in the temperature control side storage chamber have a heat exchange relationship. A heat management system characterized by: The high-temperature side storage chamber is composed of a heat exchange high-temperature side storage chamber in which the heat medium is in contact with the partition wall, and a bypass high-temperature side storage chamber in which the heat medium is not in contact with the partition wall,
2. A temperature control unit for switching between introducing the heat medium flowing through the high temperature heat medium circuit into the heat exchange high temperature side storage chamber and introducing it into the bypass high temperature side storage chamber. 2. The thermal management system according to 1. 3. The temperature adjustment unit introduces the heat medium into the heat exchange high temperature side storage chamber when the temperature of the heat medium flowing through the high temperature heat medium circuit is lower than a predetermined value. Thermal management system as described. The storage unit stores the heat medium flowing through the low temperature heat medium circuit and has a low temperature side storage chamber having a low temperature side outlet for flowing the heat medium into the temperature control circuit. ,
4. The heat management system according to claim 1, wherein the low temperature side storage chamber and the high temperature side storage chamber communicate with each other at their upper portions. 5. The heat management system according to claim 4, further comprising another temperature control unit for switching whether to introduce the heat medium in the low temperature storage chamber into the temperature control circuit. The other temperature control unit introduces the heat medium from the low-temperature storage chamber into the temperature control circuit when the temperature of the heat medium flowing through the temperature control circuit reaches or exceeds a predetermined value. 6. A thermal management system according to claim 5. 7. The temperature control unit is a channel switching valve that has a temperature sensing part that senses the temperature of the fluid flowing therein and switches the channel of the fluid. A thermal management system according to any one of the preceding claims. 8. The heat according to any one of claims 1 to 7, wherein the temperature control target is a battery mounted on a vehicle, a motor for driving the vehicle, or an inverter for driving the motor. management system. The high-temperature heat medium circuit has a heater core for circulating the heat medium heated by the heating unit to heat the interior of the vehicle,
9. The low-temperature heat medium circuit has a cooler core for circulating the heat medium cooled by the cooling unit to cool the interior of the vehicle. The thermal management system described in . A compressor that compresses a refrigerant, a radiator that dissipates heat from the refrigerant discharged from the compressor, a decompression section that decompresses the refrigerant that has dissipated heat from the radiator, and a heat absorption of the refrigerant decompressed by the decompression section. a heat pump circuit having a heat absorber that causes
the radiator and the heating portion of the high-temperature heat medium circuit are provided in a heat exchange relationship,
10. The heat management system according to claim 1, wherein said heat absorber and said cooling portion of said low-temperature heat medium circuit are provided in a heat exchange relationship.

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