CN114335866A - Battery module for preventing thermal runaway propagation - Google Patents
Battery module for preventing thermal runaway propagation Download PDFInfo
- Publication number
- CN114335866A CN114335866A CN202111583897.1A CN202111583897A CN114335866A CN 114335866 A CN114335866 A CN 114335866A CN 202111583897 A CN202111583897 A CN 202111583897A CN 114335866 A CN114335866 A CN 114335866A
- Authority
- CN
- China
- Prior art keywords
- module
- thermal runaway
- hole
- thermal expansion
- electric core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005070 sampling Methods 0.000 claims abstract description 4
- 238000000926 separation method Methods 0.000 claims description 8
- 238000009413 insulation Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005192 partition Methods 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Battery Mounting, Suspending (AREA)
Abstract
The invention relates to a battery module for obstructing thermal runaway propagation, which comprises a module end plate, a module side plate, an electric core, a bus bar, a sampling sheet and a module upper cover, wherein the module end plate and the module side plate are bonded into a whole with the electric core, a thermal expansion sheet is arranged between every two adjacent electric cores, a weak hole is formed in the module side plate and corresponds to the position of the thermal expansion sheet, and the weak hole is formed in a weak hole line corresponding to the thermal expansion sheet in parallel. The invention can improve the heat insulation effect between the thermal runaway cell and the adjacent normal cell, and prevent the heat of the thermal runaway cell from being rapidly transmitted to the large surface of the adjacent normal cell.
Description
Technical Field
The invention belongs to a battery component of a new energy automobile, and particularly relates to a battery module.
Background
With the expansion of market share of new energy vehicles, the safety problem of new energy vehicle batteries is increasingly prominent, and the thermal runaway spreading and blocking of battery modules becomes a technical problem in the industry. The invention of CN107968168B discloses a battery module, which includes a plurality of single batteries, a frame, and a partition board, wherein a through hole is formed in the partition board, a partition board is sandwiched between at least two adjacent single batteries in the plurality of single batteries, the partition board can be heated to self-foam when the heating temperature is higher than 200 ℃ to expand the volume, and when a certain single battery is out of control, the through hole structure of the partition board can form air thermal resistance to prevent a large amount of heat of the out of control single battery from being rapidly transferred to the large surface of the adjacent normal single battery, thereby achieving the purpose of heat insulation. According to the technical scheme, air thermal resistance is formed only by the aid of the through hole structure of the partition board and air in the partition board, the single batteries and the frame body are bonded into a whole (the heat conduction of the frame body is prevented), the limitation of the frame body is avoided, gaps between the thermal runaway single batteries and the adjacent normal single batteries are not changed, and the thermal insulation effect is not good.
Disclosure of Invention
The invention aims to provide a battery module for blocking thermal runaway propagation so as to improve the heat insulation effect between a thermal runaway cell and an adjacent normal cell and prevent a large amount of heat of the thermal runaway cell from being rapidly transferred to the large surface of the adjacent normal cell.
The invention the battery module group that separation thermal runaway stretchs, including module end plate, module curb plate, electric core, busbar, sampling piece and module upper cover, module end plate and module curb plate bond into an organic whole with the electric core, are provided with the thermal expansion piece between every adjacent two electric cores, have offered the weak hole with thermal expansion piece position correspondence department on the module curb plate, this weak hole component and the parallel weak hole line that corresponds of thermal expansion piece.
The middle part of the module side plate is provided with a through hole.
The weak hole comprises a round hole and a strip-shaped hole.
When a thermal runaway cell occurs, the thermal expansion sheet attached to the thermal runaway cell is subjected to thermal expansion, so that heat generated by the thermal runaway cell is absorbed on the one hand, and a larger expansion force is generated on the other hand. The expansibility that the thermal expansion piece produced adds electric core thermal runaway expansibility, will make the module curb plate produce the fracture in the weak hole line department that this thermal expansion piece corresponds (promptly the module curb plate department that corresponds between thermal runaway electric core and the normal electric core), makes the thermal runaway electric core break away from fixed knot structure's constraint, realizes the separation of thermal runaway electric core and normal electric core to thermal runaway's stretching between the separation electric core.
According to the invention, the weak hole is formed in the position, corresponding to the thermal expansion piece, of the module side plate, so that when a thermal runaway cell occurs, the corresponding module side plate between the thermal runaway cell and a normal cell can be broken, the thermal runaway cell is separated from the constraint of the fixed structure, and the separation of the thermal runaway cell and the normal cell is realized, thereby improving the heat insulation effect between the thermal runaway cell and an adjacent normal cell, and effectively preventing a large amount of heat of the thermal runaway cell from being rapidly transmitted to the large surface of the adjacent normal cell.
Drawings
Fig. 1 is an exploded view of a battery module for preventing thermal runaway propagation according to the present invention.
Fig. 2 is an isometric view of a side plate of the module of the present invention.
Detailed Description
The invention will now be further described with reference to the accompanying drawings.
As shown in fig. 1 and 2, this battery module that separation thermal runaway stretchs includes module end plate 3, module curb plate 4, electric core 6, busbar 7, sampling piece 2 and module upper cover 1, electric core 6 has polylith stack to arrange, be provided with thermal expansion piece 5 between every two adjacent electric cores 6, module end plate 3 and module curb plate 4 bond with the binder between electric core 6 and become integrative, make superimposed electric core 6 fixed between the framework of constituteing by module end plate 3 and module curb plate 4. Set up through-hole 43 in the middle part of module curb plate 4, correspond the department with 5 positions of thermal expansion piece on module curb plate 4 and seted up the weak hole, this weak hole is constituteed and is corresponded with the parallel weak hole line that expands 5 of piece, and weak hole line comprises round hole 41 and bar hole 42.
When a thermal runaway cell occurs, the thermal expansion sheet 5 attached to the thermal runaway cell expands when heated, so that heat generated by the thermal runaway cell is absorbed on the one hand, and a large expansion force is generated on the other hand. The expansibility that 5 thermal expansion pieces produced adds 6 thermal runaway expansibility of electric core, will make module curb plate 4 break away from the constraint of fixed knot structure in the weak hole line department that 5 this thermal expansion pieces correspond (promptly the module curb plate department that corresponds between thermal runaway electric core and the normal electric core), realizes the separation of thermal runaway electric core and normal electric core to thermal runaway's stretching between the separation electric core.
Claims (3)
1. The utility model provides a battery module that separation thermal runaway stretchs, includes module end plate (3), module curb plate (4), electric core (6), busbar (7), sampling piece (2) and module upper cover (1), and module end plate and module curb plate bond with electric core and become an organic whole, are provided with thermal expansion piece (5), its characterized in that between per two adjacent electric cores: weak hole has been seted up with thermal expansion piece position correspondence department on the module curb plate, and this weak hole constitution is with the parallel weak perforated line that corresponds of thermal expansion piece.
2. The battery module for preventing the uncontrolled spread of heat according to claim 1, wherein: the middle part of the module side plate (4) is provided with a through hole (43).
3. The battery module for preventing the uncontrolled spread of heat according to claim 1, wherein: the weak hole comprises a round hole (41) and a strip-shaped hole (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111583897.1A CN114335866A (en) | 2021-12-22 | 2021-12-22 | Battery module for preventing thermal runaway propagation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111583897.1A CN114335866A (en) | 2021-12-22 | 2021-12-22 | Battery module for preventing thermal runaway propagation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114335866A true CN114335866A (en) | 2022-04-12 |
Family
ID=81054767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111583897.1A Pending CN114335866A (en) | 2021-12-22 | 2021-12-22 | Battery module for preventing thermal runaway propagation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114335866A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014093244A (en) * | 2012-11-06 | 2014-05-19 | Nissan Motor Co Ltd | Heat transfer structure of battery module |
| CN107968168A (en) * | 2016-10-19 | 2018-04-27 | 宁德时代新能源科技股份有限公司 | Battery module |
| CN207719287U (en) * | 2017-12-29 | 2018-08-10 | 杭州捷能科技有限公司 | A kind of rectangular cell module |
| WO2020262080A1 (en) * | 2019-06-28 | 2020-12-30 | 三洋電機株式会社 | Power supply device, electric vehicle equipped with said power supply device, and power storage device |
| CN212874603U (en) * | 2020-08-12 | 2021-04-02 | 郑州宇通集团有限公司 | Battery box and battery module thereof |
| CN214280072U (en) * | 2020-11-20 | 2021-09-24 | 上海卡耐新能源有限公司 | Battery module and electric vehicle |
-
2021
- 2021-12-22 CN CN202111583897.1A patent/CN114335866A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014093244A (en) * | 2012-11-06 | 2014-05-19 | Nissan Motor Co Ltd | Heat transfer structure of battery module |
| CN107968168A (en) * | 2016-10-19 | 2018-04-27 | 宁德时代新能源科技股份有限公司 | Battery module |
| CN207719287U (en) * | 2017-12-29 | 2018-08-10 | 杭州捷能科技有限公司 | A kind of rectangular cell module |
| WO2020262080A1 (en) * | 2019-06-28 | 2020-12-30 | 三洋電機株式会社 | Power supply device, electric vehicle equipped with said power supply device, and power storage device |
| CN212874603U (en) * | 2020-08-12 | 2021-04-02 | 郑州宇通集团有限公司 | Battery box and battery module thereof |
| CN214280072U (en) * | 2020-11-20 | 2021-09-24 | 上海卡耐新能源有限公司 | Battery module and electric vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113140852A (en) | Battery pack | |
| CN213150897U (en) | Power battery package structure | |
| CN111584978A (en) | Battery module | |
| CN206490115U (en) | Battery modules | |
| JP2020113361A (en) | Power supply device, vehicle with the same, power storage device and separator for power supply device | |
| CN209607788U (en) | A kind of radiator of soft-package battery mould group | |
| CN106960977A (en) | A kind of multi-functional dynamic lithium battery group of high security | |
| CN206834265U (en) | A kind of dynamic lithium battery group | |
| CN209993643U (en) | Power battery box and power battery | |
| CN107968171A (en) | A kind of modular battery module | |
| CN205882030U (en) | Lithium ion battery pack | |
| CN106026262A (en) | Lithium ion battery module safety protection system | |
| CN210182465U (en) | Electricity core spacer and battery module | |
| CN204407399U (en) | Soft package lithium battery cathode tab jockey | |
| CN114335866A (en) | Battery module for preventing thermal runaway propagation | |
| CN208256867U (en) | Battery modules | |
| CN210443644U (en) | Battery module and battery pack | |
| CN209249648U (en) | Power battery heating system | |
| CN116031567A (en) | Wire harness isolation plate, battery module, exhaust system and battery pack | |
| CN218005154U (en) | Battery pack and vehicle with same | |
| CN110635083A (en) | Rapid heating battery module | |
| CN207398311U (en) | A kind of power battery module and Battery case | |
| CN212725427U (en) | Battery module | |
| CN204375861U (en) | Battery pack | |
| CN210866275U (en) | Rapid heating battery module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220412 |