CN219321457U - Battery module and battery pack - Google Patents
Battery module and battery pack Download PDFInfo
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- CN219321457U CN219321457U CN202223448354.1U CN202223448354U CN219321457U CN 219321457 U CN219321457 U CN 219321457U CN 202223448354 U CN202223448354 U CN 202223448354U CN 219321457 U CN219321457 U CN 219321457U
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- end plate
- battery module
- insulating
- tab
- battery
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- 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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Abstract
The utility model discloses a battery module and a battery pack, wherein the battery module comprises an insulating bracket; an end plate; the batteries are stacked along the thickness direction, the ends of the batteries along the length direction are provided with lugs, and the ends of two adjacent batteries are connected through the lugs; the insulation support is provided with a tab avoiding groove, the end plate is internally provided with a cooling flow passage, the tab penetrates through the tab avoiding groove, and the tab is abutted to the inner side surface of the end plate and at least partially corresponds to the cooling flow passage. The battery pack includes the battery module as described above. According to the battery module and the battery pack, the end plate is connected with the external cooling system through the cooling flow channel, so that cooling liquid can flow in and out to the cooling flow channel, the temperature of the electrode lugs is effectively increased, the temperature uniformity of the battery module is improved, and the service life of the battery pack is prolonged.
Description
Technical Field
The utility model relates to the field of batteries, in particular to a battery module and a battery pack.
Background
With the rapid development of electric vehicles, the energy density and the safety requirements of battery packs are higher and higher, and the battery packs have a trend of improving the energy density of the battery packs and reducing the cost. However, overheating of a battery pack of a power automobile can affect the safety performance of the battery, and long-time high temperature can enable electrolyte inside the battery to react, so that the battery pack not only affects the performance, but also affects the service life of a storage battery, thereby affecting the performance of a vehicle, and more seriously causing the thermal runaway of the battery to cause fire, explosion and the like of the battery. Particularly, when the battery pack of the power automobile is charged quickly at a high rate, the temperature of the battery tab is easily increased too high, so that the sealing failure of the aluminum plastic film of the battery is caused, and the battery leakage is caused, and the battery pack is failed.
Disclosure of Invention
The utility model aims to overcome the defects that in the prior art, the temperature rise of a battery tab is easy to cause the sealing failure of an aluminum plastic film of a battery due to overhigh temperature rise, so that the battery leakage, the failure of a battery pack and the like are caused, and provides a battery module and a battery pack.
The utility model solves the technical problems by the following technical scheme:
a battery module comprising an insulating support;
an end plate; and
a plurality of batteries, wherein the batteries are stacked along the thickness direction, the ends of the batteries along the length direction are provided with lugs, and the ends of two adjacent batteries are connected through the lugs; the insulation support is provided with a tab avoiding groove, the end plate is internally provided with a cooling flow passage, the tab penetrates through the tab avoiding groove, and the tab is abutted to the inner side surface of the end plate and at least partially corresponds to the cooling flow passage.
In this scheme, adopt above-mentioned structural style, the tab laminating of battery is supported and is leaned on in the medial surface of end plate and is corresponding to the cooling runner for the produced high temperature of tab can carry out the heat exchange with the coolant liquid in the cooling runner, thereby can reduce the temperature of tab, effectively prevent the temperature of tab too high, improve battery module's temperature homogeneity, promote battery module's life. Meanwhile, the battery module has supporting and isolating functions through the insulating support, and safety and stability of the battery module are further improved.
Preferably, the battery module further comprises an insulating heat conducting component, one side of the insulating heat conducting component is connected to the inner side surface of the end plate, and the tab is abutted against and attached to the other side of the insulating heat conducting component.
In this scheme, adopt above-mentioned structural style, the temperature of utmost point ear will be transmitted to on the end plate through insulating heat conduction part, guaranteed the good contact of utmost point ear and end plate through insulating heat conduction part, realize the cooling to the utmost point ear, stability is higher.
Preferably, the insulating and heat conducting member is adhered to the inner side surface of the end plate; and/or the number of the insulating heat conducting parts is multiple, and the insulating heat conducting parts are in one-to-one correspondence with the lugs and correspondingly abutted against and attached to the lugs; and/or the shape of the insulating heat conducting component is sheet-shaped.
In this scheme, adopt above-mentioned structural style, insulating heat conduction part adopts the mode of bonding to connect in the medial surface of end plate, and the installation setting is very convenient, and the mounted position is accurate.
In addition, the insulating heat conduction component can stably guarantee to cool down the tab of each battery, so that the safety and stability of the battery module are greatly improved, and the service life of the battery module is prolonged.
Preferably, the end plate is further provided with a liquid inlet and a liquid outlet, and the liquid inlet is communicated with the liquid outlet and the cooling flow channel.
In this scheme, adopt above-mentioned structural style, be used for being connected with outside cooling system through inlet and liquid outlet to realize circulative cooling, the suitability is strong, and effectively promotes battery module's cooling capacity.
Preferably, the liquid inlet and the liquid outlet are both arranged at the end part of the end plate; and/or the number of the liquid inlets and the number of the liquid outlets are one.
In the scheme, the cooling system is convenient to install and connect with the liquid inlet and the liquid outlet by adopting the structural form, and is very convenient to use; and is convenient to process and manufacture.
Preferably, the liquid inlet and the liquid outlet are both arranged at the top end of the end plate; and/or the end part of the end plate is provided with a groove, and the liquid inlet and the liquid outlet are both positioned in the groove and are not exposed on the outer surface of the end plate.
In this scheme, adopt above-mentioned structural style, the cooling system of further being convenient for outside is connected with inlet and liquid outlet, simultaneously, at the dismantlement in-process, the coolant liquid in the cooling runner also can not flow, and stability is higher.
In addition, the groove plays a role in avoiding, so that the liquid inlet and the liquid outlet are not exposed out of the outer surface of the end plate, interference phenomenon is effectively avoided, and the stability is higher.
Preferably, the lugs are abutted against the inner side surface of one end plate; alternatively, each tab abuts against an inner side of one of the end plates.
In this scheme, adopt above-mentioned structural style, can realize cooling simultaneously to the utmost point ear of a plurality of batteries through an end plate, install and set up convenient and with low costs.
In addition, the plurality of end plates are respectively used for cooling the lugs of the plurality of batteries, so that good contact and higher stability are ensured.
Preferably, the number of the end plates and the number of the insulating supports are two, and the two insulating supports are respectively positioned at two ends of the batteries.
In this scheme, adopt above-mentioned structural style, the utmost point ear at battery both ends will carry out effective cooling through two end plates and cool off, further effectively prevent the temperature of utmost point ear too high, improve battery module's temperature homogeneity, promote battery module's life. Simultaneously, two insulating supports are installed respectively and are set up in the both ends of a plurality of batteries and have the supporting role, have further improved battery module's stability.
Preferably, the end plate is connected to the insulating bracket in a snap-fit manner.
In this scheme, adopt above-mentioned structural style for installation connection is convenient between end plate and the insulating support, and has effectively avoided the end plate to produce skew dislocation phenomenon in the in-process of using, has guaranteed good contact between the utmost point ear of end plate and a plurality of batteries, improves battery temperature uniformity, promotes battery module's life.
A battery pack comprising the battery module as described above.
In the scheme, the battery pack is connected with the cooling system through the end plate in the structural form, so that the adaptability is high; meanwhile, the high temperature generated by the tab can be subjected to heat exchange with the cooling liquid in the cooling flow channel, so that the temperature of the tab can be reduced, the temperature of the tab is effectively prevented from being too high, the temperature uniformity of the battery pack is improved, and the service life of the battery pack is prolonged.
On the basis of conforming to the common knowledge in the field, the above preferred conditions can be arbitrarily combined to obtain the preferred examples of the utility model.
The utility model has the positive progress effects that:
according to the battery module and the battery pack, the end plate is connected with the external cooling system through the cooling flow channel, so that cooling liquid can flow in and out to the cooling flow channel, the temperature of the electrode lugs is effectively increased, the temperature uniformity of the battery module is improved, and the service life of the battery pack is prolonged.
Drawings
Fig. 1 is a schematic view illustrating a partial structure of a battery module according to an embodiment of the present utility model.
Fig. 2 is an exploded view of a battery module according to an embodiment of the present utility model.
Fig. 3 is a schematic structural view of an end plate according to an embodiment of the present utility model.
Fig. 4 is a schematic structural view of an end plate and an insulating and heat conducting member according to an embodiment of the present utility model.
Reference numerals illustrate:
Tab avoiding groove 31
Insulating heat conducting part 4
Liquid inlet 5
Detailed Description
The utility model will now be more fully described by way of example only and with reference to the accompanying drawings, but the utility model is not thereby limited to the scope of the examples.
As shown in fig. 1, 2, 3 and 4, an embodiment of the present utility model discloses a battery module, which includes an insulating support 3, an end plate 2 and a plurality of batteries 1, wherein the plurality of batteries 1 are stacked in a thickness direction, tabs 11 are provided on ends of the batteries 1 in a length direction thereof, and ends of two adjacent batteries 1 are connected through the tabs 11; the insulating support 3 is provided with a lug avoiding groove 31, a cooling flow passage is formed in the end plate 2, the lug 11 penetrates through the lug avoiding groove 31, and the lug 11 is abutted against the inner side face of the end plate 2 and at least partially corresponds to the cooling flow passage.
The end plate 2 is connected to an external cooling system for providing a cooling liquid such that the cooling liquid can flow into the cooling channels of the end plate 2 and thereafter out to the cooling channels of the end plate 2. The tab 11 of the battery 1 is attached to the inner side surface of the end plate 2 and corresponds to the cooling flow channel, so that the high temperature generated by the tab 11 can be subjected to heat exchange with the cooling liquid in the cooling flow channel, the temperature of the tab 11 can be reduced, the temperature of the tab 11 is effectively prevented from being too high, the temperature uniformity of the battery module is improved, and the service life of the battery module is prolonged.
The tab avoidance groove 31 on the insulating support 3 is used for the tab 11 to pass through, so that the tabs 11 in the adjacent two tab avoidance grooves 31 are not contacted, thereby realizing the effective isolation effect on the tabs 11 and greatly improving the safety of the battery module. Meanwhile, the insulating bracket 3 is arranged between the end plate 2 and the battery 1 and has a supporting function, so that the stability of the battery module is further improved.
In this embodiment, the tabs 11 are disposed at two ends of the battery 1 in the length direction, and the tabs 11 of two adjacent batteries 1 are connected by tab connection pieces, i.e. two ends of the tab connection pieces are respectively connected to the tabs 11 of two adjacent batteries 1. The lug connection piece is in surface contact with the inner side surface of the end plate 2, so that the contact area is large, the cooling effect is good, and the contact stability is good. Wherein, each tab dodge groove 31 is used for one tab connecting sheet to pass through.
The end plate 2 is also provided with a liquid inlet 5 and a liquid outlet 6, and the liquid inlet 5 and the liquid outlet 6 are communicated with the cooling flow passage. The liquid inlet 5 and the liquid outlet 6 are used for being connected with an external cooling system, and cooling liquid provided by the external cooling system enters the cooling flow channel through the liquid inlet 5 and then flows back to the external cooling system through the liquid outlet 6, so that circulating cooling is realized. Wherein, the cooling liquid can be water, and the cost is low.
And the liquid inlet 5 and the liquid outlet 6 are provided with cooling joints, and the cooling joints are convenient to be connected with an external cooling system. Wherein, the cooling joint can be quick change joint, and it is all very convenient to install, dismantle, can combine with outside cooling system through the design of cooling joint, and the suitability is strong, and effectively promotes battery module's cooling capacity.
In this embodiment, the number of the liquid inlets 5 and the number of the liquid outlets 6 are one. The liquid inlet 5 and the liquid outlet 6 are communicated with the cooling flow channel in the end plate 2, so that the circulating cooling is realized, and the structure is simple.
In this embodiment, the material of the end plate 2 may be an insulating plastic. The end plate 2 adopts an injection molding process, a cooling flow passage is designed in the end plate, and the processing and the manufacturing are convenient; and the cost is low.
The inner space of the end plate 2 can be provided with reinforcing ribs, and the requirement on the overall structural strength of the end plate 2 is ensured through the reinforcing ribs; meanwhile, the sectional flow guide is carried out through the reinforcing ribs, so that a continuous cooling flow channel is formed in the inner space, and two ends of the cooling flow channel are respectively communicated with the liquid inlet 5 and the liquid outlet 6. Of course, the number and distribution positions of the reinforcing ribs are not limited.
The inner side surface of the end plate 2 is provided with a cooling interface, and the tab 11 is abutted against the cooling interface. Cooling flow passages are provided in the end plate 2 at an inner region corresponding to the cooling interface to enhance the cooling effect on the battery 1.
The liquid inlet 5 and the liquid outlet 6 are both arranged at the end part of the end plate 2. The liquid inlet 5 and the liquid outlet 6 are both used for being connected with an external cooling system, and the cooling system can be conveniently installed and connected with the liquid inlet 5 and the liquid outlet 6 by arranging the liquid inlet 5 and the liquid outlet 6 at the end part of the end plate 2, so that the use is very convenient; and is convenient to process and manufacture.
The liquid inlet 5 and the liquid outlet 6 are both arranged at the top end of the end plate 2. The outside cooling system of being convenient for further is connected with inlet 5 and liquid outlet 6, simultaneously, in the dismantlement in-process, the coolant liquid in the cooling runner also can not flow, and stability is higher.
The end of the end plate 2 has a groove 21, and the liquid inlet 5 and the liquid outlet 6 are both located in the groove 21 and are not exposed to the outer surface of the end plate 2. The groove 21 plays a role in avoiding, so that the liquid inlet 5 and the liquid outlet 6 are not exposed out of the outer surface of the end plate 2, interference phenomenon is effectively avoided, and stability is higher.
The battery 1 is provided with tabs 11 at both ends in the longitudinal direction thereof. The number of the end plates 2 and the insulating supports 3 is two, and the two insulating supports 3 are respectively positioned at two ends of the plurality of batteries 1. The insulating support 3 is located between end plate 2 and the battery 1, and two insulating supports 3 are located the both ends of battery 1 respectively, encircle between two end plates 2 and the two insulating supports 3 and be used for holding the space of installing a plurality of batteries 1, the utmost point ear 11 at battery 1 both ends will effectively cool down the cooling through two end plates 2, further effectively prevent the temperature of utmost point ear 11 too high, improve battery module's temperature homogeneity, promote battery module's life. Simultaneously, two insulating supports 3 are installed respectively and are set up in the both ends of a plurality of battery 1 and have the supporting role, have further improved battery module's stability.
The end plate 2 is snap-fitted to the insulating holder 3. Make the installation be connected between end plate 2 and the insulating support 3 convenient, and effectively avoided end plate 2 to produce skew dislocation phenomenon at the in-process of using, guaranteed good contact between the utmost point ear 11 of end plate 2 and a plurality of battery 1, improve battery 1 temperature homogeneity, promote battery module's life.
In this embodiment, the end plate 2 at one end of the plurality of batteries 1 is a unitary structure and is integrally formed, and the plurality of tabs 11 are all abutted against the inner side surface of one end plate 2. The temperature reduction and cooling of the lugs 11 of the batteries 1 can be realized through one end plate 2, and the battery cooling device is convenient to install and set and low in cost. Of course, in other embodiments, the number of end plates 2 at one end of the plurality of cells 1 may be plural, and each tab 11 abuts against the inner side surface of one end plate 2. The plurality of end plates 2 are respectively used for cooling the lugs 11 of the plurality of batteries 1, so that good contact and higher stability are ensured.
As shown in fig. 4, the battery module further includes an insulating heat conducting member 4, one side of the insulating heat conducting member 4 is connected to the inner side surface of the end plate 2, and the tab 11 is abutted against and attached to the other side of the insulating heat conducting member 4. The temperature of the tab 11 is transferred to the end plate 2 through the insulating heat conducting member 4, and heat exchange is performed through the cooling liquid in the cooling flow channel, so that the temperature of the tab 11 is reduced. The insulating heat conduction part 4 is arranged on the cooling interface of the inner side surface of the end plate 2, good contact between the lug 11 and the cooling interface is ensured through the insulating heat conduction part 4, cooling of the lug 11 is realized, and stability is higher.
The insulating and heat conducting member 4 is a heat conducting material. Specifically, the material of the insulating and heat conducting member 4 may be copper, aluminum or iron. The heat conducting material is connected to the inner side surface of the end plate 2; preferably, the insulating and heat conducting component 4 can be connected to the inner side surface of the end plate 2 in an adhering manner, so that the installation and setting are very convenient, and the installation position is accurate.
In this embodiment, the number of the insulating and heat conducting members 4 is plural, and the plural insulating and heat conducting members 4 are in one-to-one correspondence with the plural tabs 11 and correspondingly abutted against each other. So as to ensure that the tab 11 of each battery 1 is cooled, thereby greatly improving the safety and stability of the battery module and prolonging the service life of the battery module. Of course, in other embodiments, the number of the insulating and heat conducting members 4 may be one, and one insulating and heat conducting member 4 is disposed on the inner side surface of the end plate 2 and is used to contact and abut against the tabs 11 of the plurality of batteries 1. The insulating and heat conducting member 4 has a sheet shape.
The embodiment of the utility model also discloses a battery pack, which comprises the battery module. The battery pack is connected with a cooling system through the end plate 2, so that the adaptability is high; meanwhile, the high temperature generated by the tab 11 can be subjected to heat exchange with the cooling liquid in the cooling flow channel, so that the temperature of the tab 11 can be reduced, the temperature of the tab 11 is effectively prevented from being too high, the temperature uniformity of the battery pack is improved, and the service life of the battery pack is prolonged.
While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the utility model, but such changes and modifications fall within the scope of the utility model.
Claims (10)
1. A battery module, characterized in that it comprises an insulating bracket;
an end plate; and
a plurality of batteries, wherein the batteries are stacked along the thickness direction, the ends of the batteries along the length direction are provided with lugs, and the ends of two adjacent batteries are connected through the lugs; the insulation support is provided with a tab avoiding groove, the end plate is internally provided with a cooling flow passage, the tab penetrates through the tab avoiding groove, and the tab is abutted to the inner side surface of the end plate and at least partially corresponds to the cooling flow passage.
2. The battery module of claim 1, further comprising an insulating and thermally conductive member, wherein one side of the insulating and thermally conductive member is connected to an inner side of the end plate, and wherein the tab is abutted against and attached to the other side of the insulating and thermally conductive member.
3. The battery module according to claim 2, wherein the insulating heat conductive member is adhered to an inner side surface of the end plate; and/or the number of the insulating heat conducting parts is multiple, and the insulating heat conducting parts are in one-to-one correspondence with the lugs and correspondingly abutted against and attached to the lugs; and/or the shape of the insulating heat conducting component is sheet-shaped.
4. The battery module of claim 1, wherein the end plate is further provided with a liquid inlet and a liquid outlet, the liquid inlet and the liquid outlet being in communication with the cooling flow channel.
5. The battery module of claim 4, wherein the liquid inlet and the liquid outlet are both disposed at an end of the end plate; and/or the number of the liquid inlets and the number of the liquid outlets are one.
6. The battery module of claim 4, wherein the liquid inlet and the liquid outlet are both disposed at the top end of the end plate; and/or the end part of the end plate is provided with a groove, and the liquid inlet and the liquid outlet are both positioned in the groove and are not exposed on the outer surface of the end plate.
7. The battery module according to claim 2, wherein a plurality of the tabs each abut against an inner side face of one of the end plates; alternatively, each tab abuts against an inner side of one of the end plates.
8. The battery module according to claim 1, wherein the number of the end plates and the insulating holders is two, and the two insulating holders are respectively located at both ends of the plurality of batteries.
9. The battery module of claim 1, wherein the end plate is snap-fit to the insulating support.
10. A battery pack comprising the battery module according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223448354.1U CN219321457U (en) | 2022-12-21 | 2022-12-21 | Battery module and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223448354.1U CN219321457U (en) | 2022-12-21 | 2022-12-21 | Battery module and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219321457U true CN219321457U (en) | 2023-07-07 |
Family
ID=87030227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223448354.1U Active CN219321457U (en) | 2022-12-21 | 2022-12-21 | Battery module and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219321457U (en) |
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2022
- 2022-12-21 CN CN202223448354.1U patent/CN219321457U/en active Active
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