CN220934253U - Battery box - Google Patents
Battery box Download PDFInfo
- Publication number
- CN220934253U CN220934253U CN202322163722.6U CN202322163722U CN220934253U CN 220934253 U CN220934253 U CN 220934253U CN 202322163722 U CN202322163722 U CN 202322163722U CN 220934253 U CN220934253 U CN 220934253U
- Authority
- CN
- China
- Prior art keywords
- cover
- battery
- box
- explosion
- upper cover
- 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.)
- Active
Links
- 230000002265 prevention Effects 0.000 claims description 29
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 238000004880 explosion Methods 0.000 claims description 8
- 238000009413 insulation Methods 0.000 abstract description 22
- 239000000446 fuel Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 8
- 239000000306 component Substances 0.000 description 7
- 239000010445 mica Substances 0.000 description 7
- 229910052618 mica group Inorganic materials 0.000 description 7
- 238000003860 storage Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000003892 spreading Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Battery Mounting, Suspending (AREA)
Abstract
The utility model belongs to the field of structural parts of inactive parts of electrochemical cells except fuel cells or manufacturing processes, and particularly relates to a battery box, which aims to solve the technical problems that in the prior art, flame can directly contact a fireproof cover and the fireproof cover is directly contacted with an upper cover, so that the upper cover is ignited due to higher temperature, and flame overflows to damage objects outside the box when the battery box is out of control, and the battery box comprises a lower box body and an upper cover. When the temperature of the fireproof cover body is higher, the heat insulation layer can greatly reduce the heat transferred to the upper cover through the upper part of the fireproof cover, and the upper cover or accessory parts outside the upper cover are prevented from being ignited.
Description
Technical Field
The utility model belongs to the field of structural parts or manufacturing processes of inactive parts of electrochemical cells except fuel cells, and particularly relates to a cell box.
Background
The new energy automobile power battery is mainly a lithium ion battery, and thermal runaway of the single battery is easy to cause thermal expansion of a battery module and a battery pack (thermal expansion refers to the phenomenon that the single storage battery or a single storage battery unit in a storage battery pack or a system is in thermal runaway and triggers the thermal runaway of adjacent storage batteries or storage batteries at other parts in the storage battery system), so that personal safety of passengers is damaged. Country based on strict safety requirements, relevant regulations set at least 5 minutes to allow personnel in the vehicle to evacuate safely before the fire spreads due to thermal runaway.
The Chinese patent with the authorized bulletin number of CN 216750152U and the authorized bulletin day of 2022.06.14 discloses a thermal runaway protection structure of a power battery box for an electric ship, which comprises a lower box body and an upper cover, wherein an electric core module is arranged in the lower box body, a mica fireproof top plate is covered on the upper part of the electric core module, two side edges of the mica fireproof top plate are downwards bent to form mica fireproof side plates attached to two sides of the electric core module, fireproof covers are covered on the mica fireproof side plates and the upper parts of the mica fireproof top plates, and a plurality of parallel notches are longitudinally formed in the fireproof covers which are arranged in the lower box body and close to the front part of the electric core module.
Although the thermal runaway protection structure of the electric ship power battery box in the above patent is transferred to the automobile to control the time of fire spreading, so that people in the automobile can evacuate for at least 5 minutes, in the thermal runaway protection structure of the electric ship power battery box, the top of the fireproof cover is directly contacted with the upper cover, when the thermal runaway of the battery box occurs, as the mica fireproof side plates are only arranged on two sides of the mica fireproof top plate, flame can directly contact with the fireproof cover, and the fireproof cover is directly contacted with the upper cover, so that the upper cover is ignited due to higher temperature, and flame overflow causes damage to objects outside the box when the thermal runaway of the battery box occurs.
Disclosure of utility model
The utility model aims to provide a battery box, which solves the technical problem that flame overflows to damage an object outside the box body when the battery box is out of control due to ignition of an upper cover caused by high temperature because the flame can directly contact a fireproof cover and the fireproof cover is directly contacted with the upper cover in the prior art.
In order to achieve the above purpose, the technical scheme of the battery box provided by the utility model is as follows:
the utility model provides a battery box, includes box and upper cover down, is equipped with in the box down and is used for the cover to establish at the outside fire prevention cover of battery module, is equipped with explosion-proof valve on the box lateral wall of battery box, and the fire prevention cover includes roof and curb plate all around, separate between upper surface and the upper cover of roof and be equipped with the insulating layer, the inner wall and the box of fire prevention cover enclose into the cavity that is used for holding battery module, be provided with the explosion-proof hole of arranging corresponding with explosion-proof valve on the curb plate that curb plate all around corresponds with explosion-proof valve.
The beneficial effects are as follows: the utility model provides an improved utility model. The upper part of the fireproof cover needs to bear most of the impact of flame and high-temperature objects when the battery box is in thermal runaway, and the fireproof performance of the fireproof cover can be further enhanced by arranging the heat insulation layer between the upper surface of the top plate and the upper cover; on the other hand, when the temperature of the fireproof cover body is higher, the heat insulation layer can greatly reduce the heat transferred to the upper cover through the upper part of the fireproof cover, so that the upper cover is prevented from being ignited, flame cannot overflow from the upper cover when the battery box is in thermal runaway, and the safety of the battery box is improved. The fire prevention cover can restrict the high temperature object in the cavity that inner wall and box of fire prevention cover enclose when battery module's electric core subassembly just fires, avoids the high temperature object to outflow, and the time that the extension conflagration spread can draw forth the battery box with high temperature object and flame through setting up explosion-proof valve and explosion-proof hole, can prevent that electric core module and battery box from taking place the explosion.
Further, the heat insulating layer is adhesively secured to the upper surface of the top plate.
The beneficial effects are as follows: the heat insulation layer can be conveniently and rapidly fixed on the upper surface of the top plate in an adhering mode.
Furthermore, the area of the heat insulation layer is used for meeting the condition that the projection area of the heat insulation layer on the upper cover is not smaller than the projection contour area of the upper surface of the battery module on the upper cover, so that the heat insulation layer is used for completely covering the upper surface of the battery module.
The beneficial effects are as follows: the heat insulation layer completely covers the upper surface of the battery module, so that heat in high-temperature objects and flames directly sprayed out of the battery module can be guaranteed to reach the upper surface of the box body after passing through the top plate and the heat insulation layer.
Further, the size of the explosion proof hole is not larger than the size of the explosion proof valve.
The beneficial effects are as follows: through setting the size of explosion-proof hole to be not more than the size of explosion-proof valve, can make flame and the high temperature object blowout from explosion-proof hole directly follow the explosion-proof valve, avoid flame and high temperature object to reach the upper cover from the gap department between the box of fire prevention cover and battery case to avoid the temperature of upper cover too high, and then avoid igniting the accessory outside box or the box.
Still further, the fire shield includes a fire shield body and a reinforcing structure disposed outside the fire shield body for reinforcing the fire shield body so that the fire shield body maintains a fixed shape when the battery box is thermally out of control.
The beneficial effects are as follows: the fireproof cover body can keep a fixed shape by arranging the reinforcing structure.
Further, a fire shield is secured to the upper cover.
The beneficial effects are as follows: through making fire prevention cover and upper cover fixed connection, can improve the assembly efficiency of battery box.
Further, one of the inner wall of the lower case and the outer surface of at least one side plate of the fire shield is provided with an elastic member which is in press fit with the other.
The beneficial effects are as follows: through setting up the elastic component, can fix the fire prevention cover in the box, after the electric core module fires, because the elastic component is fixed the fire prevention cover in the box, the fire prevention cover can not by high temperature gas jack-up to guarantee that the fire prevention cover can cover the electric core module in the cavity that the inner wall of fire prevention cover and box enclose, guarantee the fire prevention effect of fire prevention cover, the time that the extension conflagration spread.
Further, the elastic members are provided on opposite inner walls of the lower case.
The beneficial effects are as follows: the elastic piece clamps the fireproof cover from two sides, so that the fireproof cover can be fixed more firmly.
Drawings
FIG. 1 is a schematic view of a battery box according to the present utility model;
fig. 2 is a schematic structural view of a fire-proof cover of the battery box of the present utility model.
Reference numerals illustrate:
1. a lower box body; 2. a battery cell module; 3. a fire shield; 31. explosion-proof holes; 32. a fireproof cover body; 33. a thermal insulation layer; 4. an explosion-proof valve; 5. an upper cover; 6. an elastic member.
Detailed Description
The present utility model is described in further detail below with reference to examples.
The utility model is described by taking a rectangular battery box commonly used at present as an example, but the shape of the battery box in the utility model can also be cylindrical or other special-shaped shapes, so long as the battery box can be ensured to be internally provided with a battery cell module, and a gap for placing a fireproof cover is reserved between the battery cell module and the box body of the battery box.
In the utility model, the projection outline area of the upper surface of the battery module on the upper cover refers to the area surrounded by the outline of the projection outermost ring of the upper surface of the battery module, and the area is larger than the projection area of the upper surface of the battery module on the upper cover because gaps exist between the battery modules.
Specific embodiment 1 of the battery box provided by the utility model:
The utility model aims to provide a battery box which improves the fireproof effect and prevents flame from overflowing from an upper cover to damage objects outside the box body.
As shown in fig. 1-2, the embodiment specifically provides a battery box, which comprises a box body, wherein the box body comprises an upper cover 5 and a lower box body 1, a battery cell module 2 and a fireproof cover 3 covered on the battery cell module 2 are arranged in the box body, and a cavity for accommodating the battery cell module 2 is formed by the inner wall of the fireproof cover 3 and the box body. The fireproof cover 3 is arranged in the battery box and covers the outside of the battery cell module 2, the fireproof cover comprises a top plate and peripheral side plates, a heat insulation layer 33 which is used for being oppositely arranged with the upper cover 5 of the battery box is arranged between the upper surface of the top plate and the upper cover, in the embodiment, the heat insulation layer 33 is made of a whole heat insulation fireproof material and is adhered with the fireproof cover body 32 into a whole through double faced adhesive tape, the area of the heat insulation layer 33 is used for meeting the condition that the projection area of the heat insulation layer 33 on the upper cover 5 is not smaller than the projection outline area of the upper surface of the battery module on the upper cover 5, so that the heat insulation layer is used for completely covering the upper surface of the battery module, the fireproof cover is fixed on the upper cover, and particularly, the fireproof cover is fixed on the upper cover through a hot pressing process and the like.
Through making insulating layer 33 and roof fixed connection, when using the fire prevention cover in this technical scheme, can once directly cover fire prevention cover 3 and establish on the electric core module, simple to operate saves time. The upper part of the fireproof cover 3 needs to bear most of the impact of flame and high-temperature objects when the battery box is in thermal runaway, and the fireproof performance of the fireproof cover 3 can be further enhanced by arranging the heat insulation layer 33 on the upper surface of the top plate; on the other hand, when the temperature of the fireproof cover body is higher, the heat insulation layer can greatly reduce the heat transferred to the upper cover through the upper part of the fireproof cover, so that the upper cover is prevented from being ignited, flame cannot overflow from the upper cover when the battery box is in thermal runaway, and the safety of the battery box is improved. The insulating layer 33 can be fixed on the upper surface of the top plate conveniently and quickly by means of bonding. The heat insulation layer is made to cover the upper surface of the battery module completely, so that the heat in the high-temperature object and flame directly sprayed from the battery module can be ensured to reach the upper surface of the box body after passing through the top plate and the heat insulation layer 33. Through making fire prevention cover and upper cover fixed connection, can improve the assembly efficiency of battery box.
The fire-proof cover 3 includes a fire-proof cover body 32 and a reinforcing structure which is arranged outside the fire-proof cover body 32 and is used for reinforcing the fire-proof cover body 32 so that the fire-proof cover body 32 keeps a fixed shape when the battery box is in thermal runaway, in the embodiment, the fire-proof cover body 32 is formed by folding and sewing a whole piece of fire-proof material, the seam adopts a high-temperature-resistant fire-proof wire, and the reinforcing structure is glass fiber. The fireproof cover 32 can be kept in a fixed shape by providing a reinforcing structure.
In order to facilitate the installation of the fire protection cover 3, in the present embodiment, one of the inner wall of the lower case 1 and the outer surface of at least one side plate of the fire protection cover 3 is provided with an elastic member 6 press-fitted with the other, and the elastic member 6 is provided on the opposite two inner walls of the lower case 1. In this embodiment, three elastic members 6 are disposed on the side walls of each side case, and the elastic members 6 are elastic blocks.
Can fix the fire prevention cover 3 in the box through setting up elastic component 6, after the electric core module 2 fires, because elastic component 6 fixes the fire prevention cover 3 in the box, so fire prevention cover 3 can not be by high temperature gas jack-up to guarantee that the fire prevention cover 3 can cover electric core module 2 in the cavity that inner wall and the box of fire prevention cover 3 enclose, guarantee the fire prevention effect of fire prevention cover 3, the time that the extension conflagration spread. By arranging the elastic member 6 in the space surrounded by the fireproof cover 3 and the box body at both sides of the fireproof cover 3, the elastic member 6 can clamp the fireproof cover 3 from both sides, thereby fixing the fireproof cover 3 more firmly. For setting up the elastic component 6 of whole rectangular shape, through setting up three elastic component 6 in the space that fire prevention cover 3 and box of fire prevention cover 3 one side enclose, can make the size of elastic component 6 little, save material and cost, reduce the weight of group battery.
The upper cover 5 and the lower box body 1 are symmetrically arranged, and the side wall of the upper cover 5 is provided with an explosion-proof valve 4. Explosion-proof holes 31 corresponding to the explosion-proof valves 4 are formed in the side plates, corresponding to the explosion-proof valves 4, of the periphery side plates of the fireproof cover 3, and the size of each explosion-proof hole 31 is not larger than that of each explosion-proof valve 4.
Compared with the power battery box thermal runaway protection structure for the electric ship, which is provided with a plurality of notches distributed in parallel on the fireproof cover 3 in the prior art, the fireproof cover 3 can restrict high-temperature objects in a cavity formed by the inner wall of the fireproof cover 3 and the box body when the electric core component just fires, so that the outflow of the high-temperature objects is avoided, and the time for spreading fire is prolonged. Meanwhile, by arranging the explosion-proof valve 4 and the explosion-proof hole 31, when the pressure in the cavity enclosed by the inner wall of the fireproof cover 3 and the box body is large, flame and high-temperature objects can be ejected from the explosion-proof hole 31 and the explosion-proof valve 4, and explosion of the battery box is prevented. By disposing the explosion-proof valve 4 at the upper portion of the side wall of the case, since the high-temperature object and flame move upward, disposing the explosion-proof valve 4 at the upper portion of the case easily leads the high-temperature object and flame out of the battery case. By setting the size of the explosion-proof hole 31 to be not larger than the size of the explosion-proof valve 4, the flame and the high-temperature object ejected from the explosion-proof hole 31 can be directly ejected from the explosion-proof valve 4, and the flame and the high-temperature object are prevented from igniting the tank or the object outside the tank.
When the battery box is installed, firstly, the battery cell module 2 is arranged in the lower box body 1; then, the fireproof cover 3 is directly inserted into a gap between the battery cell module 2 and the lower box body 1, the elastic piece 6 can clamp the fireproof cover 3 between the battery cell module 2 and the lower box body 1, so that the fireproof cover 3 is fixed in the box body, and the top of the fireproof cover 3 can be supported by the upper surface of the battery cell module 2; finally, the upper cover 5 is mounted on the lower case 1 and the explosion-proof valve 4 is aligned with the explosion-proof hole 31.
Specific embodiment 2 of the battery box provided by the utility model:
the present utility model aims to provide different arrangement modes of elastic members, and the main difference between the present embodiment and the specific embodiment 1 is that: in this embodiment, the elastic members are disposed on the side walls of one side of the case, and one side of the fireproof cover is clamped by the elastic members and the cell module to fix the fireproof cover.
Specific embodiment 3 of the battery box provided by the utility model:
The present utility model aims to provide another different arrangement mode of elastic members, and the main difference between this embodiment and the specific embodiment 1 is that: in this embodiment, the elastic members are disposed on two sidewalls of the case, and each sidewall of the case is provided with an elongated elastic member.
Specific embodiment 4 of the battery box provided by the utility model:
The present utility model aims to provide a battery box that does not include an elastic member, and the main difference between this embodiment and embodiment 1 is that: in this embodiment, the elastic member is not included, and the fireproof cover is directly covered on the battery cell module.
Specific embodiment 5 of the battery box provided by the utility model:
The present utility model aims to provide a battery box which does not include an explosion-proof valve and an explosion-proof hole, and the main difference between the present embodiment and the specific embodiment 1 is that: in this embodiment, the explosion-proof valve and the explosion-proof hole are not included.
Specific example 6 of the battery box provided by the utility model:
The main difference between this embodiment and embodiment 1 is that the present utility model provides a different fireproof cover: in this embodiment, the fireproof cover includes a fireproof cover body, and a flame-retardant heat-insulating board for fixing the shape of the fireproof cover body is arranged between the fireproof cover body and the battery cell module or between the fireproof side and the heat-insulating layer.
Specific example 7 of the battery box provided by the utility model:
The present utility model aims to provide a different fire protection cover, and the main difference between the present embodiment and the specific embodiment 1 is that: in this embodiment, the fire shield does not include a reinforcing structure, and the fire shield body is directly made of a hard material.
Specific example 8 of the battery box provided by the utility model:
The present utility model aims to provide a heat insulation layer with different sizes, and the main difference between the present embodiment and the specific embodiment 1 is that: in this embodiment, the area of the insulating layer is smaller than the area of the upper surface of the top plate.
Specific example 9 of the battery box provided by the utility model:
The present utility model aims to provide a different connection mode between a fireproof cover and an upper cover, and the main difference between the embodiment and the specific embodiment 1 is that: in this embodiment, as in the technical solution in the background art, the fireproof cover is not connected to the upper cover.
The embodiment 10 of the battery box provided by the utility model comprises:
The present utility model aims to provide a different fixing manner of a heat insulation layer and a fireproof cover body, and the main difference between the embodiment and the specific embodiment 1 is that: in this embodiment, the insulating layer is not fixedly connected to the fire-protection cover, but is directly attached to the fire-protection cover as in the prior art.
Specific embodiment 11 of the battery box provided by the utility model:
The present utility model aims to provide a different explosion-proof hole, and the main difference between the present embodiment and the specific embodiment 1 is that: in this embodiment, the size of the explosion proof aperture is larger than the size of the explosion proof valve.
Specific embodiment 12 of the battery box provided by the utility model:
The present utility model aims to provide a different elastic member, and the main difference between this embodiment and embodiment 1 is that: in this embodiment, the elastic member is a V-shaped spring.
It should be noted that the above-mentioned embodiments are merely preferred embodiments of the present utility model, and the present utility model is not limited to the above-mentioned embodiments, but may be modified without inventive effort or equivalent substitution of some of the technical features thereof by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (8)
1. The utility model provides a battery box, includes box and upper cover down, is equipped with in the box down and is used for the cover to establish at the outside fire prevention cover of battery module, is equipped with explosion-proof valve on the box lateral wall of battery box, its characterized in that, fire prevention cover include roof and curb plate all around, the upper surface of roof and upper cover between separate be equipped with the insulating layer, the inner wall and the box of fire prevention cover enclose into the cavity that is used for holding battery module, be provided with the explosion-proof hole of arranging corresponding with explosion-proof valve on the curb plate that curb plate all around corresponds with the explosion-proof valve.
2. The battery compartment of claim 1, wherein the insulating layer is adhesively secured to the upper surface of the top plate.
3. The battery case according to claim 1 or 2, wherein the area of the heat insulating layer is used to satisfy that the projected area of the heat insulating layer on the upper cover is not smaller than the projected contour area of the upper surface of the battery module on the upper cover, so that the heat insulating layer is used to entirely cover the upper surface of the battery module.
4. The battery compartment of claim 1 or 2, wherein the size of the explosion proof aperture is no greater than the size of the explosion proof valve.
5. The battery case according to claim 1 or 2, wherein the fire protection cover includes a fire protection cover body and a reinforcing structure provided outside the fire protection cover body for reinforcing the fire protection cover body so that the fire protection cover body maintains a fixed shape when the battery case is thermally out of control.
6. A battery compartment as claimed in claim 1 or claim 2, wherein the fire protection cover is secured to the upper cover.
7. A battery compartment as claimed in claim 1 or 2, wherein one of the inner wall of the lower compartment and the outer surface of at least one side plate of the fire shield is provided with an elastic member press-fitted with the other.
8. The battery case of claim 7, wherein the elastic members are provided on opposite inner walls of the lower case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322163722.6U CN220934253U (en) | 2023-08-11 | 2023-08-11 | Battery box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322163722.6U CN220934253U (en) | 2023-08-11 | 2023-08-11 | Battery box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220934253U true CN220934253U (en) | 2024-05-10 |
Family
ID=90966113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322163722.6U Active CN220934253U (en) | 2023-08-11 | 2023-08-11 | Battery box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220934253U (en) |
-
2023
- 2023-08-11 CN CN202322163722.6U patent/CN220934253U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP4044346A1 (en) | Battery module capable of delaying thermal runaway and vehicle using same | |
| CN210535737U (en) | Heat insulation assembly of battery pack | |
| CN112467285A (en) | Battery module for delaying thermal runaway and vehicle using same | |
| CN211125725U (en) | Thermal protection system for power battery | |
| CN112635890B (en) | Shell structure based on lithium battery reduces burning probability | |
| CN114566741A (en) | New energy automobile power battery thermal management structure | |
| CN113422133A (en) | Structure for preventing battery thermal runaway, battery shell and battery | |
| CN220934253U (en) | Battery box | |
| CN211719746U (en) | Lithium ion battery pack with explosion-proof structure | |
| CN209880682U (en) | Battery box and power battery using same | |
| JP2023524121A (en) | Batteries, electrical devices, methods and devices for manufacturing batteries | |
| CN219558544U (en) | Lithium battery fire extinguisher assembly | |
| CN212848528U (en) | Flame-retardant lithium ion battery component | |
| CN210349898U (en) | Standardized battery box | |
| CN221239701U (en) | Flame-retardant box for power battery | |
| CN219267785U (en) | Battery module capable of preventing heat spreading | |
| CN221226493U (en) | Battery cell | |
| CN220527060U (en) | Battery device | |
| CN214625208U (en) | Battery module for delaying thermal runaway and vehicle using same | |
| CN219553801U (en) | Battery module and battery pack with thermal-insulated subassembly | |
| CN221201418U (en) | Battery pack and electric equipment thereof | |
| CN220796842U (en) | Battery device and electric automobile | |
| CN217544810U (en) | Protective bracket and battery pack with same | |
| CN217334337U (en) | Thermal runaway prevention structure of battery pack | |
| CN219534787U (en) | Fireproof structure, battery pack and power utilization device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |