CN216698636U - Battery module, battery package and car - Google Patents
Battery module, battery package and car Download PDFInfo
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- CN216698636U CN216698636U CN202220251620.2U CN202220251620U CN216698636U CN 216698636 U CN216698636 U CN 216698636U CN 202220251620 U CN202220251620 U CN 202220251620U CN 216698636 U CN216698636 U CN 216698636U
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- pressure relief
- thermal runaway
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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 provides a battery module, a battery pack and an automobile, wherein the battery module comprises: the battery cell group comprises at least two single battery cells stacked along a first direction; the thermal runaway guide module is provided with a first accommodating space, and the electric core group is arranged in the first accommodating space; the thermal runaway guide module comprises a module upper cover plate, the inner side face of the module upper cover plate faces the top face of the electric core group, a plurality of groups of first pressure relief holes are formed in the module upper cover plate, first pressure relief pieces are arranged in the first pressure relief holes, and the first pressure relief pieces are connected with the first pressure relief holes. Above-mentioned scheme can scatter rapidly and discharge the high-temperature gas that produces because of electric core thermal runaway to effectively delay the thermal spread time between the electric core in the battery module, play the effect of delaying other battery modules in the battery system and whole battery system thermal runaway, the scheme is simple, the machining cost is low, the assembly operation is convenient.
Description
Technical Field
The utility model relates to the field of automobiles, in particular to a battery module, a battery pack and an automobile.
Background
Along with the continuous improvement of the endurance mileage and the performance of the pure electric vehicle, the energy density of the single battery cell is increased, and the problem brought about therewith is that the intensity of pressure release exhaust after the battery cell is out of control due to heat is greatly improved. Especially laminate polymer core compares in cylinder electricity core and square shell electricity core, and laminate polymer core's extranal packing is the plastic-aluminum membrane, because its aluminium matter shell that does not have fixed shape and certain intensity also does not have electric core explosion-proof valve, consequently, when electric core acutely exhausts because of thermal runaway, the plastic-aluminum membrane blowout is broken through very easily to high temperature gas, and the diffusion is in module and battery package, and then causes thermal runaway on a wider range.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a battery module, a battery pack and an automobile, and aims to solve the problem that thermal runaway in a larger range is easily caused by ejection and diffusion of high-temperature gas generated when thermal runaway occurs in a soft-package battery cell in the prior art.
In order to solve the technical problems, the utility model adopts the following technical scheme:
according to an aspect of the present invention, there is provided a battery module including:
the battery cell group comprises at least two single battery cells stacked along a first direction;
the thermal runaway guide module is provided with a first accommodating space, and the electric core group is arranged in the first accommodating space; the thermal runaway guide module comprises a module upper cover plate, the inner side face of the module upper cover plate faces the top face of the electric core group, a plurality of groups of first pressure relief holes are formed in the module upper cover plate, first pressure relief pieces are arranged in the first pressure relief holes, and the first pressure relief pieces are connected with the first pressure relief holes.
Optionally, the thermal runaway guide module further comprises:
with two module end plates of module upper cover plate fixed connection, two module end plate subtend settings, the medial surface orientation of module end plate the utmost point ear of monomer electricity core, be provided with fireproof paint layer on the medial surface of module end plate.
Optionally, the edge of the first pressure relief sheet is provided with a plurality of through holes at intervals.
Optionally, the battery module further includes:
the low-voltage acquisition wire harness tray is arranged between the module upper cover plate and the electric core group, a plurality of groups of second pressure relief holes are formed in the low-voltage acquisition wire harness tray, second pressure relief pieces are arranged in the second pressure relief holes, and the second pressure relief pieces are connected with the second pressure relief holes.
Optionally, the battery module further includes:
the protective cover is formed with a second accommodating space, and the thermal runaway guide module is arranged in the second accommodating space.
Optionally, a plurality of third pressure relief holes are formed in the top of the protective cover, the positions of the third pressure relief holes correspond to the positions of the group of first pressure relief holes, third pressure relief pieces are arranged in the third pressure relief holes, and the third pressure relief pieces are connected with the third pressure relief holes in a hole-to-hole manner.
Optionally, a heat insulation pad is arranged between the top of the protective cover and the module upper cover plate.
Optionally, the heat insulation pad is provided with a plurality of fourth pressure relief holes, the positions of the fourth pressure relief holes correspond to the positions of the third pressure relief holes, fourth pressure relief pieces are arranged in the fourth pressure relief holes, and the fourth pressure relief pieces are connected with the fourth pressure relief holes.
Optionally, the protective cover is made of mica.
According to another aspect of the present invention, there is provided a battery pack including the battery module as described above.
Optionally, a heat insulation pad is arranged between two adjacent protective covers.
According to another aspect of the present invention, there is provided an automobile including the battery pack as described above.
The utility model has the beneficial effects that:
above-mentioned scheme can scatter rapidly and discharge the high-temperature gas that produces because of electric core thermal runaway to effectively delay the thermal spread time between the electric core in the battery module, play the effect of delaying other battery modules in the battery system and whole battery system thermal runaway, the scheme is simple, the machining cost is low, the assembly operation is convenient.
Drawings
Fig. 1 is a schematic structural diagram of a thermal runaway oriented module according to an embodiment of the utility model;
fig. 2 is a schematic structural diagram of a soft-package battery cell provided in an embodiment of the present invention;
FIG. 3 is a schematic diagram of a module header according to an embodiment of the present invention;
FIG. 4 is a second schematic diagram of a thermal runaway guide module according to an embodiment of the utility model;
FIG. 5 is a schematic view of a heat directing opening in the top cover plate of the module according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a protective cover and a thermal runaway guide module according to an embodiment of the utility model;
FIG. 7 is a schematic diagram of a heat shield enclosure according to an embodiment of the present invention;
FIG. 8 is a second schematic diagram of a protective cover and a thermal runaway module according to an embodiment of the utility model;
fig. 9 is a schematic diagram of a thermal protection structure between protection covers according to an embodiment of the present invention.
Description of reference numerals:
1-a cell group; 101-single cell; 1011-pole ear; 1012-positive pole tab; 1013-a negative pole tab; 1014-folding the aluminum-plastic film on the top of the battery cell; 1015-cell bottom heat-conducting interface; 1016-edge sealing of the aluminum plastic film at the end part of the cell; 2-thermal runaway guide module; 201-module upper cover plate; 2011-first bleeder plate; 202-module end plates; 203-module side plate; 3-collecting the wiring harness tray at low voltage; 301-a second bleed; 4-a protective cover; 401-third bleed; 5-a heat insulation pad; 501-fourth bleed.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model provides a battery module, a battery pack and an automobile, aiming at the problem that thermal runaway in a larger range is easily caused by ejection and diffusion of high-temperature gas generated when thermal runaway occurs in a soft-package battery cell in the prior art.
As shown in fig. 1, one embodiment of the present invention provides a battery module, including:
the battery cell group 1 comprises at least two single battery cells 101 stacked along a first direction;
the thermal runaway guide module 2 is provided with a first accommodating space, and the electric core group 1 is arranged in the first accommodating space; thermal runaway direction module 2 includes module upper cover plate 201, the medial surface orientation of module upper cover plate 201 the top surface of electric core group 1, the first pressure release hole of multiunit has been seted up on module upper cover plate 201, the downthehole first pressure release piece 2011 that is provided with of first pressure release, first pressure release piece 2011 with first pressure release hole jogged joint.
As shown in fig. 1, the thermal runaway module 2 mainly includes: a module upper cover plate 201, a module end plate 202 and a module side plate 203; the module upper cover plate 201 comprises a first side edge, a second side edge, a third side edge and a fourth side edge which are sequentially connected, two module end plates 202 are respectively connected with the first side edge and the third side edge of the module upper cover plate 201, two module side plates 203 are respectively connected with the second side edge and the fourth side edge of the module upper cover plate 201, and the module upper cover plate 201, the two module end plates 202 and the two module side plates 203 surround to form a first accommodating space; be provided with electric core group 1 and low pressure collection pencil tray 3 in the first accommodation space, monomer electricity core 101 piles up along first direction (the thickness direction of electric core) and forms electric core group 1.
As an alternative embodiment of the present invention, as shown in fig. 1, multiple sets (e.g., three sets) of first pressure relief strips 2011 may be disposed on the module upper cover plate 201, and each set may include multiple sets (e.g., 6) of first pressure relief strips 2011. Taking three groups as an example, the positions of the three groups of first pressure relief pieces 2011 respectively correspond to the positions of a positive electrode tab of the battery cell, the middle of the battery cell, and a negative electrode tab of the battery cell.
It should be noted that, by providing the first pressure release tab 2011 at a position corresponding to the positive electrode tab 1012 and the negative electrode tab 1013 of the battery cell, after thermal runaway occurs in a certain battery cell, the first pressure release tab 2011 may be impacted by a high-temperature jet (e.g., high-temperature gas), so that the first pressure release tab 2011 is separated from the module upper cover plate 201, and a first pressure release hole is exposed. Therefore, the sprayed materials can be rapidly guided through the first pressure relief hole to be discharged upwards from the thermal runaway guide module 2, and the direct spraying from the end part where the lug 1011 is located is further slowed down. Set up first pressure release piece 2011 at module upper cover plate 201 intermediate position (electric core middle part corresponds the position promptly), can be so that this first pressure release piece 2011 position becomes the air current low-pressure area of battery module, and then when taking place the thermal runaway, through the inside of the battery module that first pressure release hole guide high temperature blowout thing thermal runaway as far as, avoid high temperature blowout thing to creep other battery modules in the battery package fast.
The embodiment of the utility model provides an in, through setting up first pressure release 2011 on module upper cover plate 201 for after the thermal runaway appeared in the electric core, the first pressure release 2011 of high-temperature gas impact that erupts, follow first pressure release 2011 module upper cover plate 201 separation exposes first pressure release hole, and then sprays through the top of first pressure release hole guide high-temperature gas thermal runaway direction module 2, avoids spraying and leads to other battery module to be triggered the thermal runaway to the both sides direction of thermal runaway direction module 2 (the direction of module end plate 202 or module curb plate 203 promptly). Compared with the traditional closed standard module, the battery module provided by the embodiment of the utility model can directionally guide the discharge path of high-temperature gas after the thermal runaway of a single battery core, quickly guide heat to discharge out of the battery module, and avoid heat accumulation in the module, so that more battery cores in the battery module are simultaneously out of control. The battery pack is applicable to the battery pack adopting the soft-package battery cell, and can solve the problem that the pressure release can not be rapidly, effectively and directionally sprayed when the high-energy-density soft-package battery cell module in the prior art is out of thermal runaway.
Optionally, the thermal runaway guide module 2 further includes:
with two module end plates 202 of module upper cover plate 201 fixed connection, two module end plates 202 opposite direction sets up, the medial surface orientation of module end plate 202 utmost point ear 1011 of monomer electricity core 101, be provided with fireproof paint layer on the medial surface of module end plate 202.
Here, after the preliminary assembly among the module upper cover plate 201, the module end plate 202 and the module side plate 203 is completed, they may be assembled and fixed together using a laser welding technique.
As shown in fig. 2, is a schematic structural diagram of a soft-package battery cell. The soft-packaged battery core mainly comprises: tab 1011 (including positive tab 1012 and negative tab 1013), cell top aluminum-plastic film folded edge 1014, cell bottom heat conducting interface 1015, and cell end aluminum-plastic film edge sealed 1016. It should be noted that, because the soft-packaged battery cell does not have a casing with a fixed shape (for example, a square or cylindrical shape), only the aluminum-plastic film encapsulates the electrode and the electrolyte, and the encapsulation interface at the positive and negative electrode positions of the battery cell does not have a folded edge for sealing, when the pressure in the battery cell rises due to thermal runaway of the battery cell or other failures, the sealing at the positive and negative electrode positions of the battery cell is more likely to be a pressure relief point for blasting. In addition, test data shows that when the battery core is out of control thermally, under the two-thirds condition, high-temperature airflow and jet can be sprayed out from the aluminum-plastic film at the positive and negative electrode positions (i.e., the positions of the positive electrode tab 1012 and the negative electrode tab 1013), so that important protection needs to be performed at the positions, and thermal spreading to other battery modules after the module end plate 202 is burned out rapidly is avoided. Specifically, after the assembly of battery module is accomplished, because the medial surface of module end plate 202 just is to the banding position of electric core just/negative pole, consequently, when electric core thermal runaway begins to erupt the jet, module end plate 202 is very easily melted by the highly compressed air current of high temperature, and then leads to the both sides of electric core group 1 directly to expose and cause thermal runaway under high temperature gas flame. Therefore, as shown in fig. 3, a layer of fire-resistant fire-retardant coating can be sprayed on the inner side surface of the module end plate 202 to form a fire-retardant coating layer, so as to delay the failure time of the module end plate 202 (e.g., a cast aluminum end plate) as much as possible.
Optionally, a plurality of through holes are formed at intervals on the edge of the first pressure relief strip 2011.
As an alternative embodiment, a plurality of through holes (e.g., circular holes) may be punched in the module upper cover plate 201 at intervals, and the plurality of through holes surround to form a first pressure relief sheet 2011 with a certain shape (e.g., an oval shape). As shown in fig. 4 to fig. 5, specifically, a plurality of groups (e.g., 3 groups) of first pressure relief strips 2011 may be formed by punching (perforating), and each group has a plurality (e.g., 6) of first pressure relief strips 2011. Thus, when the thermal runaway guide module 2 is not in thermal runaway, the module upper cover plate 201 of the thermal runaway guide module 2 can play a role in fire prevention and heat insulation; when the thermal runaway guide module 2 is in thermal runaway, the small through hole on the module upper cover plate 201 forms a structural weak area. Like this, when the battery module in the back of electric core thermal runaway, inside atmospheric pressure and temperature rise in the twinkling of an eye, use module upper cover plate 201 as the aluminium matter substrate for the example, when the temperature rose, aluminium substrate can become soft, and the high temperature gas in the thermal runaway direction module 2 can make the weak area of this structure explode rapidly, thereby make first pressure release piece 2011 follow module upper cover plate 201 and separate, form the through-hole (be first pressure release hole), and then release pressure through first pressure release hole, derive the heat fast, avoid the heat gathering. So, form first pressure release piece 2011 through the mode of punching, both guaranteed thermal runaway direction module 2's protective effect, can play the effect of guide thermal runaway pressure release direction again.
In this embodiment, form the weak district of structure through the mode of punching on module upper cover plate 201, first pressure release hole is opened in easy directional blasting, and through the heat discharge in the battery module of first pressure release hole guide thermal runaway, in addition, to not taking place thermal runaway battery module, before this structure weak district is opened, there are certain intensity and protecting effect, avoid its normal battery module to be surrounded by high temperature gas jet and by the quick trigger thermal runaway, also avoided exposing the battery module body because of directly seting up the pressure release hole, easily lead to the problem of thermal spread.
Optionally, the battery module further includes:
set up in module upper cover plate 201 with pencil tray 3 is gathered to low pressure between the electric core group 1, the low pressure is gathered and has been seted up multiunit second pressure release hole on the pencil tray 3, be provided with second pressure release piece 301 in the second pressure release hole, second pressure release piece 301 with second pressure release hole part is connected.
It should be noted that the low voltage collection harness tray 3 may be used for routing.
As shown in fig. 1, as an alternative embodiment, a plurality of through holes (for example, round holes) may be punched on the low-voltage collecting harness tray 3 at intervals, and the plurality of through holes surround to form a second pressure relief sheet 301 with a certain shape (for example, an oval shape). Specifically, a plurality of groups (e.g., 3 groups) of the second vent plates 301 may be formed by punching (punching), each group having a plurality (e.g., 7) of the second vent plates 301. Therefore, when the thermal runaway guide module 2 is not in thermal runaway, the low-voltage acquisition wiring harness tray 3 of the thermal runaway guide module 2 can play a role in fire prevention and heat insulation; when the thermal runaway guide module 2 is in thermal runaway, the small through hole on the low-voltage collecting wire harness tray 3 forms a structural weak area. Like this, when the interior electric core thermal runaway back of battery module, inside atmospheric pressure and temperature rise in the twinkling of an eye, and high-temperature gas in the thermal runaway direction module 2 can make the weak district of this structure explode rapidly to make second pressure release piece 301 separate from low pressure collection pencil tray 3, form the through-hole (second pressure release hole promptly), and then carry out the pressure release through the second pressure release hole, derive the heat fast, avoid the heat gathering.
Optionally, the battery module further includes: the protection casing 4, the protection casing 4 is formed with the second accommodation space, the thermal runaway direction module 2 set up in the second accommodation space.
As an alternative, the protective cover 4 may be made of mica. As shown in fig. 6, the main functions of the protection cover 4 are: the method has the advantages that high-temperature and high-pressure gas generated by the battery module with thermal runaway is prevented from directly impacting other battery modules in the battery pack, the upper cover of the battery system or other easily-burnt parts after the shell of the battery module (namely the thermal runaway guide module 2) is exploded; the normal battery module which is not spread by heat is protected, and the system-level thermal runaway in a wider range caused by heat conduction and thermal shock is avoided.
Optionally, a plurality of third pressure relief holes are formed in the top of the protective cover 4, the positions of the third pressure relief holes correspond to the positions of the group of first pressure relief holes, third pressure relief plates 401 are arranged in the third pressure relief holes, and the third pressure relief plates 401 are connected with the third pressure relief holes.
As shown in fig. 7, the protective cover 4 is provided with a high voltage connection opening 402 and a low voltage harness connection opening 403 for routing. After the thermal runaway takes place for the electric core group in the protection casing 4, the blowout can be with the blasting of third pressure release piece 401 and make third pressure release piece 401 separate from the top of protection casing 4, expose the third pressure release hole to make heat and air current can break through protection casing 4 and discharge outside the battery module, and other battery modules that do not take place the thermal runaway can receive the protection in protection casing 4.
Optionally, a heat insulation pad 5 is disposed between the top of the protection cover 4 and the module upper cover plate 201.
It should be noted that, because the mica material is brittle and the flame impact resistance is poor, in order to avoid that the high-temperature high-pressure gas sprayed out after the thermal runaway of the battery cell directly breaks through the protective cover 4 outside the thermal runaway guide module 2, the heat insulation pad 5 can be arranged between the top of the protective cover 4 and the module upper cover plate 201. Specifically, the heat insulating pad 5 may be attached to a surface of the top of the shield 4 facing the module upper cover 201. Like this, through setting up protection casing 4 and heat insulating mattress 5 in thermal runaway direction module 2 outsides, can utilize heat insulating mattress 5 to resist the flame and strike, play the guard action to other battery module outside protection casing 4.
Optionally, the heat insulation pad 5 is provided with a plurality of fourth pressure relief holes, the positions of the fourth pressure relief holes correspond to the positions of the third pressure relief holes, fourth pressure relief pieces 501 are arranged in the fourth pressure relief holes, and the fourth pressure relief pieces 501 are connected with the fourth pressure relief holes.
Specifically, as shown in fig. 8, a plurality of fourth pressure relief pieces 501 (e.g., 3) are disposed on the heat insulation pad 5, the positions of the fourth pressure relief holes correspond to the positions of the third pressure relief holes on the protection cover 4, and a plurality of through holes are disposed at intervals on the edge of the fourth pressure relief pieces 501.
As an alternative, the fourth pressure relief sheet 501 may be cut on the heat insulation pad 5 by intermittent cutting at a position on the heat insulation pad 5 corresponding to the third pressure relief hole on the protection cover 4. Thus, when the thermal runaway guide module 2 in the protective cover 4 is not in thermal runaway, the heat insulation pad 5 in the protective cover 4 can play the roles of fire prevention and heat insulation; when the thermal runaway guide module 2 in the protective cover 4 is in thermal runaway, the weak area is broken by the high-temperature gas in the thermal runaway guide module 2 due to the weak area formed at the cutting position by the interrupted cutting process, so that the fourth pressure relief sheet 501 is separated from the heat insulation pad 5 to form a fourth pressure relief hole. Through fourth pressure release hole, can derive the heat fast, avoid the heat gathering.
The battery module provided by the embodiment of the utility model can rapidly disperse and discharge high-temperature gas generated due to thermal runaway of the battery core, thereby effectively delaying the thermal spreading time among the battery cores in the battery module and playing a role in delaying the thermal runaway of other battery modules in a battery system and the whole battery system.
The embodiment of the utility model also provides a battery pack which comprises the battery module.
Optionally, an insulating pad 5 is disposed between two adjacent protective covers 4.
As shown in fig. 9, between two adjacent battery modules after the protection cover 4 is mounted, a heat insulating mat 5 is provided, and the heat insulating mat 5 may serve as a heat protection. Specifically, when the heat insulating pad 5 is mounted, the heat insulating pad 5 may be attached to the side surface of the protective cover 4 outside one of the battery modules in advance, and then the other battery module having the protective cover 4 mounted thereon may be disposed to be closely attached to the heat insulating pad 5. So, when battery module takes place the thermal runaway, the heat accumulation on the electric core big face, keep apart the heat through heat insulating mattress 5, avoid heat-conduction to adjacent battery module and initiate further more extensive thermal runaway.
Through above-mentioned scheme, can scatter rapidly and discharge the high-temperature gas that produces because of electric core thermal runaway, and then reach first branch electric core thermal runaway back, other adjacent electric cores have spaced out of control even effect out of control one by one, have prolonged electric core and have taken place the thermal runaway to the thermal runaway time of stretching to whole battery module or battery system.
The battery pack provided by the embodiment of the utility model can rapidly disperse and discharge high-temperature gas generated due to thermal runaway of the battery core, so that the thermal spreading time among the battery cores in the battery module is effectively delayed, the thermal runaway of other battery modules in the battery system and the whole battery system is delayed, and the battery pack is simple in scheme, low in machining cost and convenient to assemble and operate.
The embodiment of the utility model also provides an automobile which comprises the battery pack.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the utility model as defined in the following claims.
Claims (12)
1. A battery module, comprising:
the battery cell group (1), the battery cell group (1) comprises at least two single battery cells (101) stacked along a first direction;
the thermal runaway guide module (2) is provided with a first accommodating space, and the electric core group (1) is arranged in the first accommodating space; thermal runaway direction module (2) includes module upper cover plate (201), the medial surface orientation of module upper cover plate (201) the top surface of electric core group (1), the first pressure release hole of multiunit has been seted up on module upper cover plate (201), be provided with first pressure release piece (2011) in the first pressure release hole, first pressure release piece (2011) with first pressure release hole part is connected.
2. The battery module according to claim 1, wherein the thermal runaway guide module (2) further comprises:
with two module end plates (202) of module upper cover plate (201) fixed connection, two module end plates (202) subtend setting, the medial surface orientation of module end plate (202) utmost point ear (1011) of monomer electricity core (101), be provided with fireproof paint layer on the medial surface of module end plate (202).
3. The battery module according to claim 1, wherein the first pressure relief piece (2011) is provided at intervals at the edge thereof with a plurality of through holes.
4. The battery module according to claim 1, further comprising:
set up in module upper cover plate (201) with low pressure collection pencil tray (3) between electric core group (1), the multiunit second pressure release hole has been seted up on low pressure collection pencil tray (3), be provided with second pressure release piece (301) in the second pressure release hole, second pressure release piece (301) with second pressure release hole part is connected.
5. The battery module according to claim 1, further comprising:
the protective cover (4), protective cover (4) are formed with the second accommodation space, thermal runaway direction module (2) set up in the second accommodation space.
6. The battery module according to claim 5, wherein a plurality of third pressure relief holes are formed in the top of the protective cover (4), the positions of the third pressure relief holes correspond to the positions of the group of first pressure relief holes, third pressure relief sheets (401) are arranged in the third pressure relief holes, and the third pressure relief sheets (401) are connected with the third pressure relief holes in a hole mode.
7. The battery module according to claim 6, wherein a heat insulating mat (5) is disposed between the top of the protective cover (4) and the module upper cover plate (201).
8. The battery module according to claim 7, wherein the heat insulating pad (5) is provided with a plurality of fourth pressure relief holes, the positions of the fourth pressure relief holes correspond to the positions of the third pressure relief holes, fourth pressure relief pieces (501) are arranged in the fourth pressure relief holes, and the fourth pressure relief pieces (501) are connected with the fourth pressure relief holes in a hole mode.
9. The battery module according to claim 5, wherein the protective cover (4) is made of mica.
10. A battery pack comprising the battery module according to any one of claims 1 to 9.
11. The battery pack according to claim 10, wherein a heat insulating mat (5) is provided between adjacent two of the protection covers (4).
12. An automobile, characterized by comprising the battery pack according to any one of claims 10 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220251620.2U CN216698636U (en) | 2022-02-07 | 2022-02-07 | Battery module, battery package and car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220251620.2U CN216698636U (en) | 2022-02-07 | 2022-02-07 | Battery module, battery package and car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216698636U true CN216698636U (en) | 2022-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220251620.2U Active CN216698636U (en) | 2022-02-07 | 2022-02-07 | Battery module, battery package and car |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115295951A (en) * | 2022-08-25 | 2022-11-04 | 中国第一汽车股份有限公司 | CTC power battery system, battery pack and electric vehicle |
| WO2024108728A1 (en) * | 2022-11-21 | 2024-05-30 | 湖北亿纬动力有限公司 | Thermal safety battery pack, battery system, and electrical device |
-
2022
- 2022-02-07 CN CN202220251620.2U patent/CN216698636U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115295951A (en) * | 2022-08-25 | 2022-11-04 | 中国第一汽车股份有限公司 | CTC power battery system, battery pack and electric vehicle |
| WO2024108728A1 (en) * | 2022-11-21 | 2024-05-30 | 湖北亿纬动力有限公司 | Thermal safety battery pack, battery system, and electrical device |
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