CN217562698U - High-safety soft package battery module and electric vehicle - Google Patents
High-safety soft package battery module and electric vehicle Download PDFInfo
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- CN217562698U CN217562698U CN202221279702.4U CN202221279702U CN217562698U CN 217562698 U CN217562698 U CN 217562698U CN 202221279702 U CN202221279702 U CN 202221279702U CN 217562698 U CN217562698 U CN 217562698U
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- module
- battery module
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- soft package
- pressure relief
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- 238000009413 insulation Methods 0.000 claims description 21
- 229910052618 mica group Inorganic materials 0.000 claims description 15
- 239000010445 mica Substances 0.000 claims description 13
- 239000004964 aerogel Substances 0.000 claims description 12
- 239000006260 foam Substances 0.000 claims description 12
- 229920000642 polymer Polymers 0.000 claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 239000000741 silica gel Substances 0.000 claims description 10
- 229910002027 silica gel Inorganic materials 0.000 claims description 10
- 239000012528 membrane Substances 0.000 claims description 8
- 230000002265 prevention Effects 0.000 claims description 6
- 229920001296 polysiloxane Polymers 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 9
- 238000009792 diffusion process Methods 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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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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- Battery Mounting, Suspending (AREA)
Abstract
The application provides a high-safety soft package battery module and an electric vehicle, wherein the high-safety soft package battery module comprises a battery module, a module end plate, a module side plate, a module upper cover plate and a module bottom plate, wherein the module end plate, the module side plate, the module upper cover plate and the module bottom plate form a shell of the battery module; and the module upper cover plate comprises a honeycomb type pressure relief hole. The battery module can at least avoid the situation that high-temperature gas is accumulated in the module to continuously heat other batteries adjacent to the thermal runaway battery to form a domino effect, so that the battery module has higher safety.
Description
Technical Field
The application relates to the field of power batteries, in particular to a high-safety soft package battery module and an electric vehicle.
Background
At present, the mechanical properties of module upper cover plate is only considered to current soft packet of module, consequently has following defect:
firstly, high-temperature gas generated by the thermal runaway battery can continuously heat other batteries adjacent to the thermal runaway battery to form a domino effect, and finally damage the whole soft package module. Secondly, thermal runaway high temperature eruption can pass through metal covering and continuously heat other modules, produces serious threat to vehicle safety. Third, in the prior art, a mica plate thermal insulation layer is arranged between small modules of series-connected batteries to prevent thermal diffusion, but the mica plate belongs to a plastic material and can be extruded to an expansion area in the battery cycle process, so that local 'dead' of a pole piece and lithium release are caused, and the service life and safety of the battery are further influenced.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the application is to provide a high security laminate polymer battery module and electric motor car for solve at least that the high-temperature gas that thermal runaway battery produced can last to heat this technical problem with the adjacent other batteries of thermal runaway battery, and then realize avoiding high-temperature gas to gather in the module and last to heat other batteries adjacent with thermal runaway battery at least, thereby form the domino effect.
The high-safety soft package battery module comprises a battery module, a module end plate, a module side plate, a module upper cover plate and a module bottom plate, wherein the module end plate, the module side plate, the module upper cover plate and the module bottom plate form a shell of the battery module;
and the module upper cover plate comprises a honeycomb type pressure relief hole.
In this application first aspect, the module curb plate the module upper cover plate the module bottom plate forms battery module's casing, and then can form mechanical protection for battery module through the casing. On the other hand, because module upper cover plate has included honeycomb pressure release hole, and then when the battery module of casing inside takes place the thermal runaway, its produced high-temperature gas can release to the external world through honeycomb pressure release hole, and then avoids high-temperature gas to gather in the module and continuously heats other batteries adjacent with the thermal runaway battery, and then avoids forming the domino effect to reduce the possibility of battery module explosion. Consequently compare with prior art, the laminate polymer battery module of this application has higher security.
In the first aspect of the present application, as an alternative embodiment, two or more of the battery modules constitute a stacked unit;
and, high security laminate polymer battery module still includes fire prevention group, fire prevention subassembly sets up two it is in between the unit to pile up.
In this alternative embodiment, two or more of the battery modules may constitute a stacking unit, and thus the diffusion of thermal runaway between the stacking units may be inhibited or blocked by providing a fire-retardant member between the two stacking units.
In the first aspect of the present application, as an optional implementation manner, the high-safety pouch battery module further includes a heat insulation plate attached to a surface of the module upper cover plate.
In this alternative embodiment, the possibility that the high temperature gas continuously heats other batteries adjacent to the thermal runaway battery through the module upper cover plate can be further reduced through the thermal insulation plate, thereby providing a double thermal barrier to provide insulation protection.
In the first aspect of the present application, as an optional implementation manner, the heat insulation board is provided with a first pressure relief groove, and the opening position of the first pressure relief groove corresponds to the honeycomb pressure relief hole.
In this optional embodiment, by forming the first pressure relief groove in the thermal insulation board and setting the forming position of the first pressure relief groove to correspond to the honeycomb pressure relief hole, the thermal insulation board can be used to provide insulation protection while the thermal insulation board is used to provide a dual thermal barrier, and the thermal insulation board can be prevented from blocking high-temperature gas and releasing the high-temperature gas from the honeycomb pressure relief hole.
In the first aspect of the present application, as an optional implementation manner, the high-safety soft package battery module further includes a silica gel explosion-proof film, and the silica gel explosion-proof film is attached to the surface of the heat insulation plate.
In this optional embodiment, the high-temperature eruption generated by the thermal runaway battery module can be blocked by the silica gel explosion-proof membrane to continuously heat the battery cell through the module upper cover plate, so that the thermal runaway domino effect is prevented from being triggered.
In the first aspect of the present application, as an optional implementation manner, the silicone explosion-proof membrane is provided with a second pressure relief groove, and a position of the second pressure relief groove corresponds to the honeycomb pressure relief hole.
In this optional embodiment, a second pressure relief groove is formed in the silica gel explosion-proof membrane, and the opening position of the second pressure relief groove corresponds to the honeycomb pressure relief hole, so that the silica gel explosion-proof membrane can be prevented from blocking the high-temperature gas generated by the thermal runaway battery module from being released from the honeycomb pressure relief hole while the high-temperature eruption passes through the module upper cover plate to continuously heat the battery cell.
In the first aspect of the present application, as an optional implementation manner, the high-safety pouch battery module further includes an insulating strip, where the insulating strip is disposed at the bottom of the module bottom plate, and/or at the bottom of the battery module.
In the optional embodiment, the insulating strips are arranged at the bottom of the module bottom plate and/or the bottom of the battery module, so that the phenomenon of bonding 'holes' caused by flatness problems can be avoided, and the temperature consistency of the battery module is improved.
In the first aspect of the present application, as an optional implementation manner, the fire-proof assembly includes two mica papers and an aerogel, wherein the two mica papers are respectively disposed at the left and right sides of the aerogel.
In this optional embodiment, can restrain or block the diffusion of thermal runaway between the unit of piling up through two micas, on the other hand, can make the heat that produces when battery module charges and discharges pass through the aerogel and transmit the outside heat transfer medium of module through the aerogel, has reduced heat transfer contact thermal resistance, and then can realize the cooling and the heating of battery fast to make a plurality of electric core groups of battery module can be great degree keep the temperature uniformity, prolong battery module's life. Simultaneously, when the battery module receives vibration impact or extrusion, the aerogel can also play the cushioning effect to electric core, reduces the risk of electric core fracture, deformation, weeping.
In the first aspect of the present application, as an optional implementation manner, the fire protection assembly further includes a clip buffer foam, one side of the clip buffer foam abuts against the stacking unit, and one side of the clip buffer foam abuts against the mica paper.
In the optional embodiment, the buffer foam with the square-shaped frame can effectively avoid the defect that the service life and the safety of the battery are influenced due to the fact that the mica paper is extruded to an expansion area in the battery cycle process to cause local 'dead' and lithium release of the pole piece.
The second aspect of this application discloses an electric motor car, the electric motor car includes like the high security laminate polymer battery module of this first aspect of this application. The electric vehicle of this application has all advantages of the high security laminate polymer battery module of this application first aspect.
Drawings
To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a schematic perspective exploded view of a high-safety soft-package battery module disclosed in an embodiment of the present application;
fig. 2 is a schematic perspective exploded view of another high-safety soft package battery module disclosed in an embodiment of the present application;
fig. 3 is a schematic structural diagram of an upper cover plate of a module disclosed in an embodiment of the present application;
FIG. 4 is an enlarged schematic view of B in FIG. 3;
fig. 5 is a schematic structural view of a battery module disclosed in an embodiment of the present application;
fig. 6 is a schematic structural view of another battery module disclosed in an embodiment of the present application;
FIG. 7 is a schematic structural diagram of a shield assembly according to an embodiment of the present disclosure;
fig. 8 is a schematic view of the structure at a of fig. 7.
Wherein the reference numerals are:
the module comprises a module end plate 1, a module side plate 2, a module upper cover plate 3, a honeycomb type pressure relief hole 4, a sampling assembly 5, a module bottom plate 6, a fireproof assembly 7, an insulating strip 8, a battery module 9, a heat insulation plate 10, a silica gel explosion-proof film 11, a pressure relief groove 12, buffer foam 13 and a stacking unit 14.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
Please refer to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, and fig. 8. As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, and fig. 8, a high-safety pouch battery module is disclosed in an embodiment of the present application, where the high-safety pouch battery module includes a battery module 9, a module end plate 1, a module side plate 2, a module upper cover plate 3, and a module bottom plate 6, where the module end plate 1, the module side plate 2, the module upper cover plate 3, and the module bottom plate 6 form a casing of the battery module 9; in addition, the module upper cover plate 3 includes a honeycomb pressure relief hole 4.
In the embodiment of the present application, the module side plate 2, the module upper cover plate 3, and the module bottom plate 6 form a housing of the battery module 9, and then the mechanical protection can be formed for the battery module 9 through the housing. On the other hand, because the module upper cover plate 3 includes the honeycomb pressure release holes 4, when the battery module 9 in the casing is out of control due to heat, the high-temperature gas generated by the honeycomb pressure release holes 4 can be released to the outside, so that the high-temperature gas is prevented from accumulating in the module to continuously heat other batteries adjacent to the out of control due to heat, a domino effect is prevented from being formed, and the possibility of explosion of the battery module 9 is reduced. Consequently compare with prior art, the laminate polymer battery module of this application has higher security.
In the present embodiment, the module side plate 2, the module upper cover plate 3, and the module bottom plate 6 may be made of a metal material, such as an aluminum plate.
In this application embodiment, high security laminate polymer battery module includes two module curb plates 2, and one of them module curb plate 2 is preceding curb plate, and another module curb plate 2 is the posterior lateral plate.
In the embodiment of the present application, the module side plate 2, the module upper cover plate 3, and the module bottom plate 6 form the housing of the battery module 9 by welding.
In the embodiment of the present application, in the space where the module end plate 1 and the module side plate 2, the module upper cover plate 3, and the module bottom plate 6 form the housing of the battery module 9, the heat conducting structural adhesive is coated on the bottom of the battery module, and the heat conducting gel is encapsulated in the other part of the space of the housing, so as to form the heat conducting path of the housing.
In the embodiment of the application, optionally, the high-safety pouch battery module further comprises a sampling assembly 5, wherein the sampling assembly 5 can collect the temperature and the voltage of the battery module 9 or the temperature and the voltage of the stacking unit 14. In the present embodiment, the sampling assembly 5 further optionally includes a bus bar and an output pole.
In the embodiment of the present application, as an alternative implementation manner, as shown in fig. 3 and 4, the honeycomb pressure relief hole 4 is an opening in a cross shape.
In the embodiment of the present application, as an alternative implementation manner, the high-safety pouch battery module includes a plurality of battery modules 9, for example, 50 battery modules 9, wherein more than two battery modules 9 can constitute the stacking unit 14, for example, one stacking unit 14 is constituted by every 10 battery modules 9. Accordingly, by connecting two or more battery modules 9 in series, the stacked unit 14 can be obtained. On the other hand, high security laminate polymer battery module still includes the fire prevention group, and fire prevention subassembly 7 sets up between two pile up units 14.
In this alternative embodiment, two or more battery modules 9 can constitute the stacked unit 14, and further, by providing the fireproof assembly 7 between the two stacked units 14, the diffusion of thermal runaway between the stacked units 14 can be suppressed or blocked.
In the embodiment of the application, as an optional implementation manner, the high-safety soft package battery module further comprises a heat insulation plate 10, and the heat insulation plate 10 is attached to the surface of the module upper cover plate 3. In this alternative embodiment, the possibility that the high temperature gas continuously heats other cells adjacent to the thermal runaway cell through the module upper cover plate 3 can be further reduced by the heat insulating plate 10, thereby providing a double thermal barrier to provide insulation protection.
In the embodiment of the present application, as an alternative implementation manner, the heat insulation board 10 is provided with a first pressure relief groove 12, and the opening position of the first pressure relief groove 12 corresponds to the honeycomb pressure relief hole 4. In the alternative embodiment, the first pressure-releasing grooves 12 are formed in the heat-insulating board 10, and the positions of the first pressure-releasing grooves 12 are set to correspond to the honeycomb pressure-releasing holes 4, so that the heat-insulating board 10 can provide a double heat barrier to protect insulation, and the heat-insulating board 10 can prevent high-temperature gas from being blocked by the heat-insulating board 10 and being released from the honeycomb pressure-releasing holes 4.
In the embodiment of the application, as an optional implementation manner, the high-safety pouch battery module further includes a silica gel explosion-proof film 11, and the silica gel explosion-proof film 11 is attached to the surface of the heat insulation board 10. In this optional embodiment, the high-temperature eruption generated by the thermal runaway battery module 9 can be blocked by the silica gel explosion-proof film 11 to continuously heat the battery cell through the module upper cover plate 3, thereby avoiding triggering the thermal runaway domino effect.
In the embodiment of the present application, as an optional implementation manner, the silicone explosion-proof membrane 11 is provided with a second pressure relief groove 12, and the opening position of the second pressure relief groove 12 corresponds to the honeycomb pressure relief hole 4. In this optional embodiment, the second pressure relief groove 12 is formed in the silicone explosion-proof membrane 11, and the opening position of the second pressure relief groove 12 corresponds to the honeycomb pressure relief hole 4, so that the silicone explosion-proof membrane 11 is prevented from blocking the release of the high-temperature gas from the honeycomb pressure relief hole 4 while the high-temperature eruption generated by the thermal runaway battery module 9 is continuously heated through the module upper cover plate 3.
In the embodiment of the application, as an optional implementation manner, the high-safety soft package battery module further comprises an insulating strip 8, and the insulating strip 8 is arranged at the bottom of the module bottom plate 6 and/or at the bottom of the battery module 9.
In the optional embodiment, the insulating strips 8 and/or the bottoms of the battery modules 9 are arranged at the bottoms of the module bottom plates 6, so that the phenomenon of bonding 'holes' caused by flatness problems can be avoided, and the temperature consistency of the battery modules 9 is improved.
In the embodiment of the present application, as an optional implementation manner, the fireproof component 7 includes two mica papers and an aerogel, wherein the two mica papers are respectively disposed at the left and right sides of the aerogel.
In this optional embodiment, can restrain or block the diffusion of thermal runaway between unit 14 piling up through two micas, on the other hand, can make the heat that produces when battery module 9 charges and discharges pass through the aerogel and transmit the outside heat transfer medium of module through the aerogel, has reduced heat transfer contact thermal resistance, and then can realize the cooling and the heating of battery fast to make a plurality of electric core groups of battery module 9 can the great degree keep the temperature uniformity, prolong battery module's life. Simultaneously, when battery module received vibration impact or extrusion, the aerogel can also play the cushioning effect to electric core, reduces the risk of electric core fracture, deformation, weeping.
In the embodiment of the present application, as an optional implementation manner, the fire protection component 7 further includes a square-frame buffer foam 13, one side of the square-frame buffer foam 13 abuts against the stacking unit 14, and one side of the square-frame buffer foam 13 abuts against the mica paper.
In the optional embodiment, the buffer foam with the square-shaped frame can effectively avoid the defect that the service life and the safety of the battery are influenced due to the fact that the mica paper is extruded to an expansion area in the battery cycle process to cause local 'dead' and lithium release of the pole piece.
In addition, this application embodiment still discloses an electric motor car, and the electric motor car includes like the high security laminate polymer battery module of this application embodiment. The electric vehicle of this application has all advantages of the high security laminate polymer battery module of this application embodiment.
In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The high-safety soft package battery module is characterized by comprising a battery module, a module end plate, a module side plate, a module upper cover plate and a module bottom plate, wherein the module end plate, the module side plate, the module upper cover plate and the module bottom plate form a shell of the battery module;
and the module upper cover plate comprises a honeycomb type pressure relief hole.
2. The high-safety pouch battery module according to claim 1, wherein two or more battery modules constitute a stacking unit;
and, high security laminate polymer battery module still includes fire prevention subassembly, fire prevention subassembly sets up two it is in between the unit to pile up.
3. The high-safety soft package battery module as claimed in claim 1, further comprising a heat insulation plate attached to the surface of the module upper cover plate.
4. The high-safety soft package battery module according to claim 3, wherein the heat insulation plate is provided with a first pressure relief groove, and the opening position of the first pressure relief groove corresponds to the honeycomb pressure relief hole.
5. The high-safety soft package battery module according to claim 3, further comprising a silica gel explosion-proof film attached to the surface of the heat insulation plate.
6. The high-safety soft package battery module as recited in claim 5, wherein the silicone explosion-proof membrane is provided with a second pressure relief groove, and the opening position of the second pressure relief groove corresponds to the honeycomb pressure relief hole.
7. The high-safety soft package battery module according to claim 1, further comprising an insulating strip arranged at the bottom of the module bottom plate and/or the bottom of the battery module.
8. The high-safety soft package battery module according to claim 2, wherein the fireproof assembly comprises two mica papers and an aerogel, wherein the two mica papers are respectively arranged at the left side and the right side of the aerogel.
9. The high-safety soft package battery module as claimed in claim 8, wherein the fireproof assembly further comprises a square frame buffer foam, one side of the square frame buffer foam is abutted against the stacking unit, and one side of the square frame buffer foam is abutted against the mica paper.
10. An electric vehicle, characterized in that the electric vehicle comprises the high-safety soft package battery module according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221279702.4U CN217562698U (en) | 2022-05-25 | 2022-05-25 | High-safety soft package battery module and electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221279702.4U CN217562698U (en) | 2022-05-25 | 2022-05-25 | High-safety soft package battery module and electric vehicle |
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| Publication Number | Publication Date |
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| CN217562698U true CN217562698U (en) | 2022-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221279702.4U Active CN217562698U (en) | 2022-05-25 | 2022-05-25 | High-safety soft package battery module and electric vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102660377B1 (en) * | 2023-02-05 | 2024-04-24 | 주식회사 보백씨엔에스 | manufacture method of insulation sheet by using mica and mica insulation sheet |
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2022
- 2022-05-25 CN CN202221279702.4U patent/CN217562698U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102660377B1 (en) * | 2023-02-05 | 2024-04-24 | 주식회사 보백씨엔에스 | manufacture method of insulation sheet by using mica and mica insulation sheet |
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