JP5267025B2 - vehicle - Google Patents

Description

  The present invention relates to a vehicle including a cooling structure that cools a heat generating device using air in a cabin.

  2. Description of the Related Art There are known an electric vehicle and a hybrid vehicle that drive a vehicle by rotating a motor with electric power stored in a capacitor. The battery generates heat when charging and discharging electric power, and battery deterioration progresses when the heat generation temperature rises. Therefore, it is necessary to cool the battery using a refrigerant.

  As a cooling structure for a storage battery, a vehicle having a circulation structure for cooling a storage battery using air in a cabin and returning a part of the cooled air back into the cabin is known. Is disclosed.

Patent Document 1 discloses a vehicle having a structure in which air after battery cooling is exhausted to a space between an interior material on the side of a trunk room and a body outer plate, and the exhausted air is returned into a cabin through the trunk room. Is disclosed.
Japanese Patent Laid-Open No. 2004-42698 JP 2002-231321 A JP-A-10-252467 JP 2001-313091 A

  However, in the configuration of Patent Document 1, the air heated by the cooling of the condenser is exhausted in a concentrated space between the body outer plate and the interior material on the side of the trunk room. There is a possibility of giving a feeling of touch.

  SUMMARY OF THE INVENTION Accordingly, the present invention has an object to suppress a feeling of irritability to an occupant by air after cooling a heat generating device in a vehicle having a cooling structure that cools the heat generating device using air in the cabin. .

In order to solve the above problem, the present invention provides a plurality of power storage elements stacked in a predetermined direction, a plurality of conduction paths for conducting air formed between the adjacent power storage elements, and the stacking direction. And an intake chamber for allowing the air sucked from the cabin to flow into each of the conduction paths, and a first exhaust port extending in the stacking direction and for exhausting the air flowing out of each of the conduction paths. An exhaust chamber, and an exhaust chamber, and a passage that allows the air exhausted from the first exhaust port to the exhaust chamber to flow into the cabin. The first exhaust port has a main exhaust port formed at an end portion of the exhaust chamber, and a plurality of sub exhaust ports formed upstream of the main exhaust port, and the plurality of sub exhaust ports The exhaust port is located in front of the exhaust chamber And it is provided only in a region other than the central portion of the main exhaust direction through a main exhaust port.

Specifically, the capacitor has an electromagnetic wave emitting member that emits electromagnetic waves, the exhaust chamber has an electromagnetic wave absorbing function of absorbing electromagnetic waves, and the electromagnetic waves from the capacitor to the exhaust chamber are The size of the auxiliary exhaust port can be set so as not to exit from the auxiliary exhaust port to the outside of the exhaust chamber . Thereby, while dispersing air in an exhaust chamber, it can suppress that electromagnetic waves mix in a radio signal. Here, the diameter of the auxiliary exhaust port is preferably 5 to 8 mm.

Further, in the exhaust chamber, the air used for cooling of the condenser may be provided with a second exhaust port for discharging to the outside of the vehicle.

The exhaust chamber can be provided between the rear seat and the luggage as a storage chamber for storing the storage battery . A fan or the like that disperses the air exhausted into the storage chamber can be eliminated, and the storage chamber can be downsized.

According to the present invention, since the air after cooling the capacitor can be dispersed and exhausted to the exhaust chamber, it is possible to suppress giving the passenger a feeling of being irritated.

Hereinafter, embodiments of the present invention will be described.
(Embodiment 1)
The configuration of the vehicle of this embodiment will be described with reference to FIGS. 1 and 2. Here, FIG. 1 is a side view of a vehicle equipped with a battery, and illustrates the internal structure as necessary. FIG. 2 is a block diagram of the hybrid vehicle.

  A storage chamber (exhaust chamber) 14 for storing a storage battery (heat generating device) 13 is provided between the tension panel 11 and the luggage trim 12 provided at the rear of the rear seat. The battery 13 according to the present embodiment can be used for driving an electric vehicle, a hybrid vehicle, and a fuel cell vehicle or as an auxiliary power source.

  A large number of passages 11a that allow the movement of air are formed in the edge portion of the part tension panel 11, and the storage chamber 14 and the cabin 3 communicate with each other through the passages 11a. A metal or the like can be used for the partition panel 11.

An intake port 17 is provided immediately below the rear window of the vehicle. An intake duct 18 is connected to the intake port 17, and an intake chamber 21 is connected to the intake duct 18. The intake chamber 21 is assembled along the upper end surface of the battery 13. The exhaust chamber (exhaust pipe) 22 is assembled along the lower end surface of the capacitor 13. As shown in FIG. 2, the hybrid vehicle includes an engine 10, a generator 101, a power control unit 30, The battery 13, the motor 50, and the hybrid ECU 60 are included.

  The power generated by the engine 10 is divided into two paths by the power split mechanism 70. One is a path for driving the wheel 90 via the speed reducer 80. The other is a path for generating power by driving the generator 101.

  The power generator 101 generates power using the power of the engine 10 distributed by the power distribution mechanism 70, and the power generated by the power generator 101 is properly used according to the driving state of the vehicle and the SOC of the battery 13. For example, during normal traveling or sudden acceleration, the electric power generated by the generator 101 becomes electric power for driving the motor 50 as it is.

  On the other hand, when the SOC of the battery 13 is lower than a predetermined value, the power generated by the generator 101 is converted from AC power to DC power by the inverter 30 a of the power control unit 30, and the power control unit 30. After the voltage is adjusted by the converter 30b, it is stored in the capacitor 13. A capacitor may be used instead of the battery 13.

  The motor 50 is a three-phase AC motor, and is driven by at least one of the electric power stored in the capacitor 13 and the electric power generated by the generator 101. The motor 50 assists the engine 10 to travel the vehicle, or travels the vehicle only by the driving force from the motor 50.

  On the other hand, at the time of regenerative braking of the hybrid vehicle, the motor 50 is driven by the wheel 90 via the speed reducer 80, and the motor 50 operates as a generator. As a result, the motor 50 acts as a regenerative brake that converts braking energy into electric power. The electric power generated by the motor 50 is stored in the battery 13 through the inverter 30a.

  Hybrid ECU 60 includes a CPU (Central Processing Unit) 60a and a memory 60b. The CPU 60a calculates based on the driving state of the vehicle, the accelerator opening detected by the accelerator opening sensor, the change rate of the accelerator opening, the shift position, the SOC of the battery 13, the map and program stored in the memory 60b, and the like. Process. Thereby, the hybrid ECU 60 controls devices mounted on the vehicle so that the vehicle is in a desired driving state.

  Further, the CPU 60 a controls the driving of the cooling fan 20 based on the temperature information output from the battery 13.

  Next, the cooling structure of the battery 13 will be described with reference to FIGS. 3 and 4. Here, FIG. 3 is a schematic diagram of the cooling structure of the battery, (A) and (B) are a cross-sectional view and a plan view, respectively, and a square battery is illustrated by a broken line. FIG. 4 is a perspective view of the spacer member.

  The battery 13 is configured by connecting a plurality of rectangular batteries (power storage elements) 131 via spacer members 132, and end plates 133 are provided at both ends of the battery 13 in the stacking direction. Unlike the present embodiment, the battery case of the prismatic battery 131 is made of a non-conductive material, and a convex portion is appropriately formed on the surface thereof, thereby omitting the spacer member 132 and adjacent corners. It is also possible to adopt a form in which both the insulation between the battery cells 132 and the cooling property are compatible.

  As shown in FIG. 4, the spacer member 132 is formed in a box shape with one end portion in the X-axis direction opened, and a plurality of protrusions 132a are formed on the other end surface in the X-axis direction of the spacer member 132. Are provided side by side in the Y-axis direction. These protrusions 132a are in contact with the outer surface of the adjacent prismatic battery 131 (see FIG. 3). Thereby, it can prevent that an active material peels from the electrical power collector which is an internal structure of the square battery 131, and can suppress the performance fall of a battery.

  In a state where the protrusion 132a is in contact with the outer surface of the prismatic battery 131, a gap through which cooling air flows is formed between the protrusions 132a arranged side by side in the Y-axis direction. The square battery 131 is housed inside the spacer member 132, and the electrode part 131 a of the square battery 131 protrudes from a pair of openings 132 b formed in the spacer member 132.

  As shown in FIG. 3B, the exhaust chamber 22 has an exhaust port (first exhaust port, main exhaust port) 22a for exhausting the air after cooling the capacitor 13 to the storage chamber 14, An exhaust port (second exhaust port) 22b for exhausting outside the vehicle is formed.

  The exhaust port 22a is disposed on the vehicle front side of the exhaust port 22b, and has a smaller area (area through which air passes) than the exhaust port 22b. In the present embodiment, the area of the exhaust port 22a is set to about の the size of the exhaust port 22b.

  A plurality of small exhaust ports (first exhaust port, sub exhaust port) 22c having a diameter smaller than that of the exhaust port 22a are formed on the upstream side of the exhaust port 22a. The intake chamber 21 and the exhaust chamber 22 can be made of an electromagnetic wave absorbing material (for example, metal) that absorbs electromagnetic waves. Accordingly, the intake chamber 21 and the exhaust chamber 22 can absorb the electromagnetic wave output from the power cable (electromagnetic wave emitting member). Thereby, it can prevent that electromagnetic waves become noise and mix in a radio signal. The power cable described here means a high-power wiring for outputting the electric power of the battery 13 to the motor 50.

  Furthermore, the diameter of the small exhaust port 22c is preferably set to 5 to 8 mm or less. By setting it to 8 mm or less, it is possible to prevent electromagnetic waves emitted from the power cable or the like from being transmitted without being absorbed by the exhaust chamber 22. Moreover, by setting to 5 mm or more, the heat of the air used for cooling the capacitor 13 can be more effectively diffused.

  The small exhaust ports 22 c are formed in a matrix (that is, at an equal pitch) in a region other than the central portion of the exhaust chamber 22. Here, when the small exhaust port 22c is formed in the central portion of the exhaust chamber 22, the amount of air flowing in from the intake chamber 21 decreases in a region closer to the exhaust ports 22a and 22b than in the central portion. The capacitor 13 cannot be cooled evenly.

  Therefore, by forming the small exhaust port 22c in a region other than the central portion of the exhaust chamber 22, the air for cooling can be supplied to each of the square batteries 131 substantially equally. Thereby, the variation in the temperature of each square battery 131 is effectively suppressed, and the decrease in the battery life of the battery 13 can be suppressed.

  Here, the “central part” means a central part in the main exhaust direction (X-axis direction) of the exhaust chamber 22, and each of the square batteries 131 is uniformly cooled (temperature variation is suppressed). From a viewpoint, it can set suitably.

  Next, a method for cooling the battery 13 will be described with reference to FIGS. 1 and 3. When the vehicle is ignited, the cooling fan 20 is activated. The CPU 60a constantly monitors the temperature of the capacitor 13 and increases the rotational speed of the cooling fan 20 when the temperature of the capacitor 13 exceeds a predetermined temperature (for example, 40 ° C.).

  When the cooling fan 20 rotates, the air in the cabin 3 flows into the intake chamber 21 from the intake port 17 through the intake duct 18. The air flowing into the intake chamber 21 cools each square battery 131 through a gap between the adjacent square batteries 131. At this time, since the small exhaust ports 22c are formed in a region other than the central portion of the exhaust chamber 22, each square battery 131 can be cooled substantially uniformly. Thereby, the fall of the battery life of the electrical storage device 13 can be suppressed.

  A part of the air flowing into the exhaust chamber 22 is exhausted into the housing chamber 14 through the exhaust port 22a or the small exhaust port 22c, and the rest is exhausted outside the vehicle through the exhaust port 22b. As described above, according to the configuration of the present embodiment, air can be exhausted from the plurality of small exhaust ports 22c and the exhaust ports 22a to the accommodation chamber 14, so that the heated air can be dispersed. Thereby, it can suppress that the air which heated up with respect to the cabin 3 connected to the storage chamber 14 flows in intensively.

  Further, the air can be easily dispersed only by forming the small exhaust port 22 c in the exhaust chamber 22. Therefore, it is not necessary to provide a fan or the like for dispersing the air independently, and the storage chamber 14 can be downsized and the cost can be reduced.

  Further, the exhaust port 22b may be omitted, and all the air after cooling the battery 13 may be exhausted to the accommodation chamber 14. This eliminates the need for an exhaust pipe for exhausting the cooled air to the outside of the vehicle, thereby reducing costs and further simplifying the vehicle structure.

  Further, the position where the small exhaust port 22 c is formed in the exhaust chamber 22 can be appropriately changed according to the shape of the exhaust chamber 22 and the like. At this time, from the viewpoint of suppressing the variation in temperature of each square battery 131, the formation position of the small exhaust port 22c may be set as appropriate.

  An exhaust pipe may be connected to the exhaust port 22a and the small exhaust port 22c, and the exhaust port of the exhaust pipe may be provided in a separate compartment (exhaust chamber) different from the accommodating chamber 14 communicating with the cabin 3. Even with this configuration, it is possible to obtain the same effect (suppression of moist feeling) as in the above-described embodiment. For example, in the configuration of Patent Document 1, the space between the interior material on the side of the trunk room and the body outer plate can be used as an exhaust chamber.

1 is a side view illustrating a schematic configuration of a vehicle equipped with a capacitor. It is a block diagram of a vehicle. It is the schematic of the cooling structure of an electrical storage device, (A) is sectional drawing, (B) is a top view. It is a perspective view of a spacer member.

Explanation of symbols

3 Cabin 11 Partition Panel 11a Passage 12 Luggage Trim 13 Capacitor 14 Storage Chamber 17 Intake Port 18 Intake Duct 21 Intake Chamber 22 Exhaust Chamber 22a 22b Exhaust Port 22c Small Exhaust Port

Claims (5)

A plurality of power storage elements stacked in a predetermined direction, a plurality of conduction paths for conducting air formed between the adjacent power storage elements, and each of the air drawn from the cabin extending in the stacking direction A vehicle comprising a capacitor having an intake chamber for flowing into a conduction path and an exhaust chamber extending in the stacking direction and having a first exhaust port for exhausting air flowing out from each conduction path Because
An exhaust chamber;
A passage that allows inflow of air exhausted from the first exhaust port into the exhaust chamber into the cabin;
The first exhaust port includes a main exhaust port formed at an end of the exhaust chamber, and the main exhaust port.
A plurality of sub exhaust ports formed on the upstream side of the port, and the plurality of sub exhaust ports
Provided only in a region other than the central portion in the main exhaust direction through the main exhaust port in the air chamber
Vehicle characterized by being made . The capacitor has an electromagnetic wave emitting member that emits electromagnetic waves,
The exhaust chamber has an electromagnetic wave absorbing function for absorbing electromagnetic waves,
Electromagnetic waves toward the exhaust chamber from the storage battery, the exhaust tea from the secondary exhaust port
The vehicle according to claim 1, characterized in that setting the size of the auxiliary exhaust port so as not emitted to the outside of Nba. The vehicle according to claim 2 , wherein a diameter of the auxiliary exhaust port is 5 to 8 mm. The vehicle according to any one of claims 1 to 3 , wherein the exhaust chamber has a second exhaust port for discharging air used for cooling the capacitor to the outside of the vehicle. The vehicle according to any one of claims 1 to 4 , wherein the exhaust chamber is a storage chamber for storing the storage battery and is provided between a rear seat and a luggage.

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