CN109326818A - The application of battery module and this battery module - Google Patents
The application of battery module and this battery module Download PDFInfo
- Publication number
- CN109326818A CN109326818A CN201810859597.3A CN201810859597A CN109326818A CN 109326818 A CN109326818 A CN 109326818A CN 201810859597 A CN201810859597 A CN 201810859597A CN 109326818 A CN109326818 A CN 109326818A
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- Prior art keywords
- battery module
- battery
- phase
- coldplate
- battery cell
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6552—Closed pipes transferring heat by thermal conductivity or phase transition, e.g. heat pipes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6569—Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/659—Means for temperature control structurally associated with the cells by heat storage or buffering, e.g. heat capacity or liquid-solid phase changes or transition
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The present invention relates to a kind of battery modules, the battery module includes: at least one battery cell (2), especially Li-ion batteries piles battery, hot linked coldplate (3) are led with at least one described battery cell (2), wherein, it there also is provided the thermal balance layer (4) for being configured to improve the capacity of heat transmission between at least one battery cell (2) and the coldplate (3) between at least one described battery cell (2) and the coldplate (3), wherein, the thermal balance layer (4) is constructed by basic material (5) and further includes at least one phase-change material (6), at least one described polymer actuator has the inversion temperature higher than 20 DEG C of temperature.
Description
Technical field
The present invention is from the battery module of the type according to independent claims.In addition, the present invention also relates to institute
State the application of battery module.
Background technique
It is known from the state of the art, battery module can be made of multiple single battery cells, the battery
Group battery can be connected in series and/or in parallel mutual conductive connection.
Especially in the vehicle of electricity operation (EV), hybrid vehicle (HEV) or plug-in hybrid vehicle (PHEV)
In the case of, using including plentiful and the strong Li-ion batteries piles battery of power or lithium polymer battery group battery the battery of energy
Group module, wherein the battery module preferably has about 100 battery cells, so as to meet be enhanced to row
Sail the expection of power.
Based on chemical conversion process, Li-ion batteries piles battery or lithium polymer battery group battery are especially being discharged or are being absorbed
Heating when electric flux, thus in order to run battery cell high-power in this way in preferred temperature range, it is also known that,
Battery module may include thermoregulating system, and the thermoregulating system should especially cause, and the battery cell is without departing from predetermined
Temperature.
It should be noted here that the preferred temperature range of Li-ion batteries piles battery is substantially between 5 DEG C and 35 DEG C.In addition,
Service life continues to decline from substantially 40 DEG C of running temperature, should be by temperature adjustment system thus in order to meet the requirement to enough service life
Battery cell is maintained in the state of thermally not critical (the thermisch unkritisch) under 40 DEG C by system.This
Outside, the temperature difference between different battery cells should not also exceed 5 Kelvins.
In this regard, by for example known thermoregulating system using the fluid for flowing through coldplate of the prior art, wherein the fluid is all
Water/ethylene glycol mixture in this way.
In addition, being known from the state of the art, heat is arranged between such coldplate and the battery cell of battery module
Equalizing layer, the thermal balance layer are expressed as " Thermal Interface Material (thermal interfacial material) " (TIM) in English.
Summary of the invention
The battery module of feature with independent claims is provided the advantage that can be extremely by reliable way
Few one forms hot line road between battery cell and coldplate
In this regard, providing a kind of battery module, the battery module includes at least one battery cell and coldplate.
Battery cell especially Li-ion batteries piles battery herein.In addition, coldplate connects with heat conduction at least one battery cell
It connects.
Here, there also is provided thermal balance layer, the heat between at least one described battery cell and the coldplate
Equalizing layer is configured to improve the capacity of heat transmission between at least one described battery cell and the coldplate.
Here, thermal balance layer is constructed by basic material (Grundmaterial) and further includes at least one phase-change material.
At least one described phase-change material has the inversion temperature on 20 DEG C of temperature herein.Preferably, at least one phase transformation material
Material has the inversion temperature on 30 DEG C of temperature herein.At least one phase-change material especially has the temperature at 40 DEG C herein
On inversion temperature.
By the measure enumerated in the dependent claims, the advantageous extension of the equipment illustrated in the independent claim
Scheme and improvement project are possible.
Here it should be noted that phase-change material is interpreted as following material, the feelings that the material changes in ambient temperature
It can be converted back and forth between different phases under condition.Such transformation is exceeding or the feelings of not up to so-called inversion temperature herein
It is carried out under condition.
Phase transformation described herein especially can be expanded or or be shunk.
Herein, it is particularly possible to be limited by selection phase-change material and by the desirably adjustment direction converted back and forth
And temperature.
This convert back and forth between different phases is especially configured to reversible process.
Therefore phase-change material converts back and forth especially between the first phase and the second phase, wherein the first phase inversion temperature it
Exist in the case where lower and the second phase is on inversion temperature in the case that exists.
For example, the first phase, which can be solid and the second phase, can be liquid；Or first phase can be it is solid
And the second phase can be gaseous；Or first phase can be liquid and the second phase can be it is gaseous.
In addition, thought according to the present invention is it is also possible that the first phase describes the first shape of so-called polymer actuator
Shape (erste Form) and the second phase describe the second shape (zweite Form) of so-called polymer actuator.Therefore, make
Solid-state is obtained for the first phase and the second phase structure and phase transformation is configured to shape change
It is advantageously carried out as a result, using battery module according to the present invention: to the electricity of an at least battery pack caused by tolerance
The surface irregularity in pond and expansion and contraction process due at least one battery cell and in the electricity of battery module
The surface modification occurred during operation compensates, so that the hot line road between at least one battery cell and coldplate is logical
The equalizing layer holding for crossing calorifics is maintained.Herein can by the shape of phase-change material change make thermal balance layer and it is described extremely
The surface irregularity of a few battery cell and the surface modification of at least one battery cell are adapted.
Advantageously, the basic material of the thermal balance layer is constructed by electrically insulating material.Thus it is possible that at least
One constructs the electric insulation part (elektrische Isolation) of restriction between battery cell and coldplate.In addition, heat is
The basic material of weighing apparatus layer can select as follows, so that additionally can also be at least one battery cell and coldplate
Between construct the enough capacity of heat transmission.The basic material of thermal balance layer especially can for example be constructed by polymeric material or by paste
Or full-bodied material construction.
It here should be it is once again noted that in order to improve the capacity of heat transmission at least one described battery cell and cold
But thermal balance layer is constructed between plate, so that the basic material can have the capacity of heat transmission of raising.
Meet purpose, the basic material of the thermal balance layer is deformable in a manner of elastically and/or plastically.Base
Plinth material especially can be deformable in reversible mode.Thus exist it is possible that being compensated during battery module operation
At least one battery cell relative to coldplate arrangement in terms of inhomogeneities.
An advantageous aspect according to the present invention, at least one described phase-change material are disposed in the basis of thermal balance layer
In material.This have the advantage that exceed at least one phase-change material inversion temperature in the case where, at least one described phase
Become material to change its shape and preferably also expand (expandieren), it is possible thereby to reduce at least one battery pack electricity
Spacing between pond and coldplate.Thus, it is possible to preferably avoid between at least one described battery cell and coldplate
The air gap of formation.
Especially because the air with 0.026 Watt per meter Kelvin has the relatively smaller capacity of heat transmission, it is possible to
Avoid the thermal barrier (thermische of the part with high thermal resistance)。
Advantageously, at least one described phase-change material is arranged at least one described battery cell and the basic material
Between material and/or at least one described phase-change material is arranged between the coldplate and the basic material.This is with following
Advantage: exceed at least one phase-change material inversion temperature in the case where, at least one phase-change material change its shape and
It preferably also expands, it is possible thereby to reduce the spacing between at least one battery cell and coldplate.Thus, it is possible to it is preferred that
Ground avoids the air gap preferably constructed between at least one battery cell and coldplate.
Especially because the air with 0.026 Watt per meter Kelvin has the lesser capacity of heat transmission, it is possible to avoid
The thermal barrier of part with high thermal resistance.
According to a kind of preferred embodiment, thermal balance layer includes multiple phase-change materials.Thus it is possible that providing reliable
Hot line road.
One according to the present invention meets the aspect of purpose, at least one described phase-change material constructs in the following manner, makes
Obtaining at least one described phase-change material has first shape on the inversion temperature and has under the inversion temperature
There is the second shape.
Here, the volume at least twice of the volume of first shape especially the second shape is big.Thus it is possible that providing
Reliable hot line road between at least one described battery cell and coldplate.
In addition, the present invention also relates to the use of battery module according to the present invention, for the operation in battery module
Period improves the capacity of heat transmission between at least one described battery cell and coldplate.
In addition, the present invention also relates to the use of battery module according to the present invention, for prevent heat from least one
Battery cell is transferred on coldplate.
Especially, the phase-change material has this on 50 DEG C, on preferably 65 DEG C and further preferred
Inversion temperature on 80 DEG C.
Battery module according to the present invention can be not only used in electric vehicle, hybrid vehicle and plug-in mixing
Power car and battery pack in mobile amusement equipment and communication equipment and can apply fixed memory (Speicher it) neutralizes in the memory for goals of medicine, such as intracorporal battery pack.
Detailed description of the invention
It is shown in the accompanying drawings and elaborates the embodiment of the present invention in the following description.Wherein:
Fig. 1 schematically shows a kind of implementation of the battery module according to the present invention at least one phase-change material
Mode；
Fig. 2 schematically shows a kind of embodiment of phase-change material.
Specific embodiment
Fig. 1 schematically shows a kind of embodiment of battery module 1.
Battery module 1 includes at least one battery cell 2, at least one described battery cell especially lithium herein
Ion battery cell.
In addition, battery module 1 includes coldplate 3.Here, coldplate 3 and at least one thermally conductive company of battery cell 2
It connects.
In order to improve the capacity of heat transmission between at least one described battery cell 2 and the coldplate 3, here, in institute
State arrangement thermal balance layer 4 between at least one battery cell 2 and the coldplate 3.
Here, thermal balance layer 4 is constructed by basic material 5.The basic material 5 of thermal balance layer 4 is herein preferably by being electrically insulated
Material 7 constructs.For example, basic material 5 can be constructed by silicone or epoxides and additionally include the thermally conductive filling of energy
Material (F ü llstoff), for improving the capacity of heat transmission.
In addition, basic material can be constructed by paste or full-bodied material.
In addition, the basic material 5 of the thermal balance layer 4 is preferably constructed in a manner of elastically and/or plastically deformable.
In addition, thermal balance layer 4 includes phase-change material 6.The phase-change material 6 has herein to be turned on 20 DEG C of temperature
Change temperature.Phase-change material 6 preferably has the inversion temperature on 30 DEG C of temperature herein.Phase-change material 6 especially has herein
Inversion temperature on 40 DEG C of temperature.Thermal balance layer 4 especially may include multiple phase-change materials 6 herein.
Phase-change material 6 so constructs herein, has in the case where so that the phase-change material is on the inversion temperature
First shape 61 and there is the second shape 62 in the case where under the inversion temperature.Here, the diagram on the right side of Fig. 1 shows
The following state of phase-change material 6 out: in this state, phase-change material forms first shape 61, and the diagram on the left side of Fig. 1 shows
The following state of phase-change material 6 out: in this state, phase-change material forms the second shape 62.
It should especially find out compared with the diagram on the left side of Fig. 1 from the diagram on the right side of Fig. 1, the volume of first shape 61 is
At least twice of the volume of second shape 62 is big.
Therefore, the diagram on the left side especially shows following state: in this state, temperature is located under inversion temperature, and
The diagram on the right side shows following state: in this state, temperature is located on inversion temperature.
Here, Fig. 1 shows a kind of embodiment of battery module 1, wherein at least one described phase-change material 6 is by cloth
It sets within the basic material 5 of thermal balance layer 4.
Obviously herein it is also possible that at least one described phase-change material 6 is disposed in coldplate 3 and thermal balance layer 4
Between basic material 5.
Obviously herein it is also possible that at least one described phase-change material 6 is disposed at least one battery pack electricity
Between pond 2 and the basic material 5 of the thermal balance layer 4.
It, can be between thermal balance layer 4 and at least one battery cell 2 here, should find out from the diagram on the left side of Fig. 1
Form the air gap 8.
Beyond the inversion temperature of at least one phase-change material 6, the phase-change material changes its shape simultaneously
And it especially expands, thermal balance layer 4 is thus allow generally to adapt at least one described battery cell 2 and can use
The material of thermal balance layer 4 fills the air gap 8, it is possible thereby to improve the capacity of heat transmission.
Fig. 2 shows a kind of embodiments of phase-change material 6.
Here, showing the phase-change material 6 with the second shape 62 in the diagram on the left side and on the right side in Fig. 2
Phase-change material with first shape 61 is shown in diagram.
Here it should be noted that in the case where the diagram on the left side, temperature is under inversion temperature and showing on the right side
In the case where figure, temperature is on inversion temperature.
Here, should will become apparent from again from Fig. 2: especially body of the volume of first shape 61 greater than the second shape 62
Product, and at least twice of the volume of preferably the second shape is big.
Claims (9)
1. a kind of battery module, the battery module include:
At least one battery cell (2), especially Li-ion batteries piles battery, and
Hot linked coldplate (3) are led at least one described battery cell (2), wherein at least one described battery pack
It there also is provided between battery (2) and the coldplate (3) thermal balance layer (4), the thermal balance layer is configured to described in raising
The capacity of heat transmission between at least one battery cell (2) and the coldplate (3),
It is characterized in that,
The thermal balance layer (4) is constructed by basic material (5) and further includes at least one phase-change material (6), and described at least one
A phase-change material has the inversion temperature on 20 DEG C of temperature, it is therefore preferred to have the inversion temperature on 30 DEG C of temperature
And especially there is the inversion temperature on 40 DEG C of temperature.
2. according to battery module described in preceding claims 1, which is characterized in that the basis of the thermal balance layer (4)
Material (5) is constructed by electrically insulating material (7).
3. the battery module according to one of preceding claims 1 or 2, which is characterized in that the institute of the thermal balance layer (4)
It is deformable in a manner of elastically and/or plastically for stating basic material (5).
4. the battery module according to one of preceding claims 1 to 3, which is characterized in that at least one described phase transformation material
Material (6) is arranged within the basic material (5).
5. the battery module according to one of preceding claims 1 to 5, which is characterized in that at least one described phase transformation material
Material (6) is arranged between at least one battery cell (2) and the basic material (5)；And/or at least one described phase
Become material (6) to be arranged between the coldplate (3) and the basic material (5).
6. the battery module according to one of preceding claims 1 to 5, which is characterized in that the thermal balance layer (4) includes
Multiple phase-change materials (6).
7. the battery module according to one of preceding claims 1 to 6, which is characterized in that at least one described phase transformation material
Material (6) is constructed in the following manner, so that at least one described phase-change material (6) has first shape on the inversion temperature
(61) there are the second shape (62) and under the inversion temperature, wherein the volume of the especially described first shape (61) is
At least twice of the volume of second shape (62) is big.
8. according to claim 1 to battery module described in one of 7 according to the application of such as under type, so that described at least one
The capacity of heat transmission between a battery cell (2) and the coldplate (3) is enhanced during the operation of battery module (1).
9. the application to battery module described in one of 7 as follows according to claim 1, so that preventing heat from described
At least one battery cell (2) is transferred on the coldplate (3).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017213272.8 | 2017-08-01 | ||
| DE102017213272.8A DE102017213272A1 (en) | 2017-08-01 | 2017-08-01 | Battery module and use of such a battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109326818A true CN109326818A (en) | 2019-02-12 |
Family
ID=65019789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810859597.3A Pending CN109326818A (en) | 2017-08-01 | 2018-07-31 | The application of battery module and this battery module |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109326818A (en) |
| DE (1) | DE102017213272A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112713354A (en) * | 2019-10-08 | 2021-04-27 | 通用汽车环球科技运作有限责任公司 | Thermal insulation layer incorporating phase change material for power module assembly |
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| DE102016014722A1 (en) * | 2016-12-09 | 2017-07-13 | Daimler Ag | Cell block for a motor vehicle battery, with a heat sink to prevent the spread of local overheating |
| CN206340616U (en) * | 2017-01-06 | 2017-07-18 | 四川绿鑫电源有限公司 | A kind of controllable battery pack heating heat abstractor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112713354A (en) * | 2019-10-08 | 2021-04-27 | 通用汽车环球科技运作有限责任公司 | Thermal insulation layer incorporating phase change material for power module assembly |
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| DE102017213272A1 (en) | 2019-02-07 |
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