CN220291002U - Battery pack with thermal runaway protection function - Google Patents
Battery pack with thermal runaway protection function Download PDFInfo
- Publication number
- CN220291002U CN220291002U CN202321436573.XU CN202321436573U CN220291002U CN 220291002 U CN220291002 U CN 220291002U CN 202321436573 U CN202321436573 U CN 202321436573U CN 220291002 U CN220291002 U CN 220291002U
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- Prior art keywords
- battery
- explosion
- thermal runaway
- plate
- battery pack
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- 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.)
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Links
- 229910052782 aluminium Inorganic materials 0.000 claims description 26
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 25
- 239000004411 aluminium Substances 0.000 claims description 5
- 239000011324 bead Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims 1
- 239000004020 conductor Substances 0.000 abstract description 16
- 238000000034 method Methods 0.000 abstract description 8
- 230000009471 action Effects 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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 utility model discloses a battery pack with a thermal runaway protection function, which comprises a battery module, wherein the battery module comprises a plurality of battery cores, each battery core is provided with an explosion-proof valve, the explosion-proof valves are positioned between polar posts, all the explosion-proof valves of each battery module form a row, and fireproof plates are arranged on two sides of each row of the explosion-proof valves. When the electric core thermal runaway back, electric core explosion-proof valve opens, can spout high temperature conductive material, and this conductive material can probably cause the battery short circuit, leads to the battery to fire, can play the guard action to the battery through setting up the PLASTIC LAMINATED. Because the fireproof plates are arranged on two sides of the explosion-proof valve, and are respectively arranged on two sides of the explosion-proof valve, compared with the method that a fireproof plate is arranged on a battery module and is perforated on the fireproof plate to avoid the explosion-proof valve, the fireproof plate structure without holes has higher strength, and the fireproof plate is simpler to process and lower in cost because no holes are needed.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery pack with a thermal runaway protection function.
Background
The lithium ion power battery has the advantages of high voltage, high energy, small volume, light weight, wide working temperature range and the like, and the lithium ion battery pack is widely applied to various fields, in particular to the field of electric vehicles. With the development of new energy automobiles, the problem of battery pack safety has become a focus of public attention, and how to solve the problem of thermal runaway of battery packs has become urgent.
The Chinese patent with the bulletin number of CN218385627U discloses a power battery pack and a vehicle for protecting a battery from thermal runaway, which comprises a battery cell group and a conducting bar, wherein the battery cell group comprises a plurality of battery cells, each battery cell is connected through the conducting bar, and each battery cell is provided with an explosion-proof valve; the battery pack also comprises a battery pack upper cover, a battery fireproof plate and a battery pack base; the battery pack upper cover is connected with the battery pack base to form a closed space; the battery fireproof plate, the conducting bar and the battery cell group are arranged in the enclosed space; the battery fireproof plate is connected with the battery pack upper cover, and a plurality of independent exhaust spaces are formed between the battery fireproof plate and the battery pack upper cover; the exhaust space is communicated with the atmosphere outside the power battery pack through an exhaust piece; and an opening communicated with the exhaust space is arranged on the battery fireproof plate at a position corresponding to the explosion-proof valve on the battery core.
Although be provided with the PLASTIC LAMINATED in this battery package in order to reach the purpose that separates the heat and spread, but in order to dodge the explosion-proof valve, set up the hole on the PLASTIC LAMINATED and can lead to the connection position in trompil region easily to fracture, reduce the structural strength of PLASTIC LAMINATED to the hole on the PLASTIC LAMINATED can increase the work load of machining, and the cost is higher.
Disclosure of Invention
The utility model aims at: aiming at the problems of insufficient strength and complex processing of the fireproof plate structure in the prior art, the battery pack with the thermal runaway protection function is provided.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides a battery package with thermal runaway safeguard function, includes the battery module, the battery module includes a plurality of electric cores, every all be equipped with the explosion-proof valve on the electric core, the explosion-proof valve is located between the utmost point post, every the battery module all the explosion-proof valve forms one row, every row the both sides of explosion-proof valve all are equipped with the PLASTIC LAMINATED.
When electric core thermal runaway back, electric core explosion-proof valve opens, can blowout high temperature conductive material, and this conductive material can probably arouse the battery short circuit, leads to the battery to fire, through setting up the PLASTIC LAMINATED, after the high temperature conductive material blowout, the PLASTIC LAMINATED can play the guard action to the battery, reduces the possibility that the battery is influenced by the high temperature conductive material of blowout. Further, since the fireproof plates are arranged on two sides of the explosion-proof valve, and are respectively arranged on two sides of the explosion-proof valve, compared with the method that one fireproof plate is arranged on the battery module and is perforated on the fireproof plate to avoid the explosion-proof valve, the fireproof plate structure without the perforation is higher in strength, and the fireproof plate is simpler to process and lower in cost because the perforation is not needed.
As a preferable scheme of the utility model, the poles of two adjacent electric cores are connected through aluminum bars, each battery module at least comprises two fireproof plates, and the fireproof plates can cover the aluminum bars.
As a preferable scheme of the utility model, the battery module comprises a module cover plate, and the fireproof plate is glued on one side of the module cover plate, which is far away from the battery cell. Through setting up the module apron, can be used for dustproof and insulating protection, the PLASTIC LAMINATED glues in the module apron one side of keeping away from the electric core, can also play the guard action to the module apron to compare in other connected mode, glue and need not to process the module apron, convenient operation.
As a preferable scheme of the utility model, the fireproof plate is adhered to the module cover plate through double faced adhesive tape.
As a preferable scheme of the utility model, the aluminum bar is positioned between the module cover plate and the battery cell, and the fireproof plate is fixedly connected with the aluminum bar.
As a preferable scheme of the utility model, the aluminum bars are fixedly connected through the aluminum bar connecting piece, the aluminum bar connecting piece is provided with the second fixing holes, the fireproof plate is provided with the first fixing holes, and the first fastening pieces sequentially penetrate through the first fixing holes, the module cover plate and the second fixing holes.
As a preferred embodiment of the present utility model, the battery pack having a thermal runaway protection function includes at least two of the battery modules arranged side by side in the lateral direction, and the plurality of fireproof plates are fixedly connected by the bead. After battery thermal runaway, the high temperature leads to the adhesion stress of PLASTIC LAMINATED and module apron to descend, and the PLASTIC LAMINATED probably produces the displacement, can't play the guard action, fixes a plurality of PLASTIC LAMINATED that arrange along transversely side by side together through setting up the layering, and after battery thermal runaway, the layering can continue to compress tightly the PLASTIC LAMINATED, prevents that the PLASTIC LAMINATED from taking place the displacement.
As a preferred embodiment of the present utility model, the bead is mounted to an end of the fire-protection plate.
As a preferable scheme of the utility model, two adjacent fireproof plates are of an integrated structure, so that the installation is convenient, and the installation efficiency is improved.
As a preferred embodiment of the present utility model, the battery pack having a thermal runaway protection function includes at least two of the battery modules arranged side by side in the longitudinal direction, and the fireproof plate may be simultaneously adhered to at least two of the module cover plates. When a certain battery module is out of control, and the bonding force between the fireproof plate and the module cover plate is reduced, the fireproof plate is bonded to another battery module at the same time, so that the fireproof plate can be prevented from being displaced by means of bonding between the fireproof plate and the another battery module.
In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:
1. when electric core thermal runaway back, electric core explosion-proof valve opens, can blowout high temperature conductive material, and this conductive material can probably arouse the battery short circuit, leads to the battery to fire, through setting up the PLASTIC LAMINATED, after the high temperature conductive material blowout, the PLASTIC LAMINATED can play the guard action to the battery, reduces the possibility that the battery is influenced by the high temperature conductive material of blowout. Further, since the fireproof plates are arranged on two sides of the explosion-proof valve, and are respectively arranged on two sides of the explosion-proof valve, compared with the method that one fireproof plate is arranged on the battery module and is perforated on the fireproof plate to avoid the explosion-proof valve, the fireproof plate structure without the perforation is higher in strength, and the fireproof plate is simpler to process and lower in cost because the perforation is not needed.
2. According to the utility model, the fireproof plate is fixed on the aluminum bar, so that the fireproof plate can be secondarily fixed, and the phenomenon that the fireproof plate is displaced after the fireproof plate is in adhesive joint failure with the module cover plate, so that the protection effect is affected is avoided.
3. When the battery is out of control, the high temperature causes the adhesive force of the fireproof plate and the module cover plate to be reduced, the fireproof plate can generate displacement and cannot play a protective role.
4. According to the utility model, the fireproof plate is simultaneously adhered to at least two battery modules which are arranged in parallel along the longitudinal direction, when one battery module is out of control, and the adhesion force between the fireproof plate and the module cover plate is reduced, the fireproof plate is simultaneously adhered to the other battery module, so that the fireproof plate can be prevented from being displaced by virtue of the adhesion between the fireproof plate and the other battery module
Drawings
Fig. 1 is an exploded view of the battery pack described in example 2.
Fig. 2 is a schematic view of the installation of the fire protection plate described in embodiment 2.
Fig. 3 is a schematic structural view of the CCS assembly described in embodiment 2.
Fig. 4 is a schematic structural view of the fire protection plate described in embodiment 2.
Fig. 5 is an exploded view of the battery pack described in example 3.
Fig. 6 is a schematic view of the installation of the fire protection plate described in embodiment 3.
Fig. 7 is a schematic view of the structure of the molding in example 3.
Fig. 8 is a schematic structural view of the fire protection plate described in embodiment 3.
Fig. 9 is an exploded view of the battery pack described in example 4.
Fig. 10 is a schematic view of the installation of the fire protection plate described in embodiment 4.
The marks in the figure: 1-a battery module; 11-module cover plate; 2-an electric core; 21-explosion-proof valve; 3-fireproof plate; 31-a first fixing hole; 32-a third fixing hole; 4-aluminum bar; 41-a second fixing hole; 5-a first fastener; 6-layering; 61-fourth fixing holes; 7-a second fastener; 8-a shell.
Detailed Description
The present utility model will be described in detail with reference to the accompanying drawings.
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Example 1
The utility model provides a battery package with thermal runaway safeguard function, includes battery module 1, every battery module 1 includes a plurality of along the electric core 2 of longitudinal arrangement, preferably, electric core 2 is square aluminium shell electric core, electric core 2 big face (i.e. the great face of area in electric core 2) is adjacent with big face, every all be equipped with explosion-proof valve 21 on the electric core 2, explosion-proof valve is located between the utmost point post, every all explosion-proof valve 21 of battery module 1 forms one row, every row explosion-proof valve (21) both sides all are provided with PLASTIC LAMINATED 3, further, adjacent two electric core 2 the utmost point post is connected through aluminium bar 4, PLASTIC LAMINATED 3 can cover aluminium bar 4, explosion-proof valve 21 is located adjacent two interval between the PLASTIC LAMINATED 3.
When the battery thermal runaway, but explosion-proof valve 21 opens, can blowout high temperature conductive material, but this high temperature conductive material can cause the battery short circuit, leads to the battery to fire, through set up PLASTIC LAMINATED 3 in explosion-proof valve 21 both sides, but after the high temperature conductive material blowout, PLASTIC LAMINATED 3 can be right electric core 2 plays the guard action, reduces the possibility that the blowout high temperature conductive material caused the influence to the battery, preferably, PLASTIC LAMINATED 3 is the mica board, and is specific, every battery module 1 fixedly connected with is two piece at least PLASTIC LAMINATED 3, PLASTIC LAMINATED 3 is located explosion-proof valve 21 both sides. Since each of the battery modules 1 is provided with two fire-proof plates 3 and is located at both sides of the explosion-proof valve 21, the fire-proof plate 3 has higher structural strength without holes compared with the case where one fire-proof plate 3 is installed at the battery module 1 and holes are formed in the fire-proof plate 3 to avoid the explosion-proof valve 21, and the fire-proof plate 3 is simpler to process and has lower cost since holes are not required.
Specifically, the battery module 1 includes a module cover plate 11, the module cover plate 11 covers the battery cell 2 and is provided with one side of the explosion-proof valve 21, and the battery cell 2 can be dustproof and insulated by arranging the module cover plate 11. The fireproof plate 3 is glued to the top surface of the module cover plate 11, compared with other connection modes, the module cover plate 11 is not required to be processed by gluing, the operation is convenient, and the fireproof plate 3 can be glued to the top surface of the module cover plate 11 through double faced adhesive tape.
When the battery Bao Re is out of control, the high-temperature conductive material sprayed out of the explosion-proof valve 21 can cause the module upper cover 11 above the explosion-proof valve to be burnt out instantly, and the fireproof plate 3 is covered above the aluminum bar 4, so that the high-temperature conductive material is not easy to influence the aluminum bar 4, the aluminum bar 4 is short-circuited, and the battery is ignited.
The battery module 1 and the fireproof plate 3 are both installed inside the casing 8.
Example 2
According to the embodiment, the fireproof plate 3 is further fixed on the basis of the embodiment 1, specifically, as shown in fig. 1-4, a CCS component (Cells Contact System integrated busbar, harness board integrated piece product is composed of FPC, plastic structural members, copper-aluminum bars and the like) is installed between the module cover plate 11 and the top surface of the battery core 2, the CCS component comprises an aluminum bar 4, an aluminum bar connecting piece and the like, the fireproof plate 3 is provided with a first fixing hole 31, correspondingly, the aluminum bar connecting piece is provided with a second fixing hole 41, a first fastener 5 sequentially penetrates through the first fixing hole 31, the module cover plate 11 and the second fixing hole 41, the fireproof plate 3 and the aluminum bar are fixed together through the first fastener 5, the fireproof plate 3 is secondarily fixed, and the fireproof plate 3 is prevented from being displaced after the fireproof plate 3 and the module cover plate 1 are in adhesive joint failure, so as to influence the protection effect.
Specifically, the number and positions of the first fixing holes 31 and the second fixing holes 41 are not limited, and the first fastening member 5 may be a bolt or a screw or a rivet or other structural members capable of fastening.
Example 3
In this embodiment, the fire protection plates 3 are further fixed on the basis of embodiment 1 or 2, specifically, as shown in fig. 5 to 8, in this embodiment, the fire protection plates include at least two battery modules 1 arranged in parallel along a transverse direction (i.e., perpendicular to an arrangement direction of the battery cells in the battery modules), and since the explosion-proof valves 21 are disposed between the fire protection plates 3 arranged in parallel along the transverse direction, the fire protection plates 3 arranged in parallel along the transverse direction are fixedly connected by the battens 6, the battens 6 are bar-shaped structural members, and a plurality of fire protection plates 3 arranged in the same transverse direction are connected together by the battens 6. After thermal runaway of the battery, the high temperature leads to the adhesion of PLASTIC LAMINATED 3 with module apron 11 descends, PLASTIC LAMINATED 3 probably produces the displacement, can't play the guard action, through setting up layering 6 will a plurality of follow transversely arrange side by side PLASTIC LAMINATED 3 are together fixed, after the thermal runaway of the battery, layering 6 can continue to compress tightly PLASTIC LAMINATED 3 prevents PLASTIC LAMINATED 3 takes place the displacement.
Specifically, the fireproof plate 3 is provided with third fixing holes 32 near the two ends of the battery module 1, the number of the third fixing holes 32 is not limited, the position of the pressing strip 6 corresponding to the third fixing holes 32 is provided with fourth fixing holes 61, the second fastening pieces 7 sequentially penetrate through the fourth fixing holes 61 and the third fixing holes 32, the pressing strip 6 is fixed on the fireproof plate 3 through the second fastening pieces 7, the second fastening pieces 7 can be bolts, screws, rivets or other structural members capable of playing a fastening role, and the material of the second fastening pieces 7 is not limited.
Preferably, two adjacent fireproof plates 3 are of an integral structure, namely, when the fireproof plates 3 glued by the adjacent battery modules 1 are not blocked by the explosion-proof valve 21, the fireproof plates 3 can be of an integral structure, so that the installation can be facilitated, and the installation efficiency is improved.
Example 4
As shown in fig. 9 to 10, the present embodiment further fixes the fire protection plate 3 on the basis of embodiment 1, 2 or 3, specifically, in the present embodiment, the fire protection plate comprises at least two of the battery modules 1 arranged side by side in the longitudinal direction, and the fire protection plates 3 positioned at one side of the explosion protection valve 21 can abut each other because of no barrier of the explosion protection valve 21, in the present embodiment, the fire protection plates 3 arranged side by side in the longitudinal direction are in an integral structure, that is, one fire protection plate 3 can be glued to at least two of the module cover plates 11 arranged side by side in the longitudinal direction at the same time. When the battery module 1 is out of control, the adhesion between the fireproof plate 3 and the module cover 11 is reduced, and the fireproof plate 3 is adhered to another battery module 1, so that the fireproof plate 3 can be prevented from being displaced by adhering the fireproof plate 3 to another battery module 1.
Example 5
A battery system comprising a battery pack according to any one of embodiment 1, 2, 3 or 4, wherein the fire protection plate 3 is not provided with holes, so that the fire protection plate 3 has higher structural strength, is not easy to lose protection, and the battery Bao Re has lower probability of losing control, and further the battery system adopting the battery pack has lower probability of losing control of heat.
Example 6
A vehicle comprising the battery system of embodiment 5, wherein the probability of a failure of the vehicle employing the battery system due to thermal runaway of the battery is lower because the probability of thermal runaway of the battery system is lower.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. The utility model provides a battery package with thermal runaway safeguard function, its characterized in that, includes battery module (1), battery module (1) include a plurality of electric core (2), every all be equipped with explosion-proof valve (21) on electric core (2), explosion-proof valve (21) are located between the utmost point post, every all explosion-proof valve (21) of battery module (1) form one row, every row the both sides of explosion-proof valve (21) all are equipped with PLASTIC LAMINATED (3).
2. The battery pack with the thermal runaway protection function according to claim 1, wherein the poles of two adjacent electric cores (2) are connected through aluminum bars (4), each battery module (1) at least comprises two fireproof plates (3), and the fireproof plates (3) can cover the aluminum bars (4).
3. The battery pack with the thermal runaway protection function according to claim 2, wherein the battery module (1) comprises a module cover plate (11), and the fireproof plate (3) is glued to the side of the module cover plate (11) away from the battery cell (2).
4. A battery pack with thermal runaway protection function according to claim 3, characterized in that the fire-proof plate (3) is adhered to the module cover plate (11) by double sided tape.
5. A battery pack with thermal runaway protection according to claim 3, characterized in that the aluminium bar (4) is located between the module cover plate (11) and the cell (2), the fire protection plate (3) being fixedly connected to the aluminium bar (4).
6. The battery pack with the thermal runaway protection function according to claim 5, wherein the aluminum bar (4) is fixedly connected through an aluminum bar connecting piece, the aluminum bar connecting piece is provided with a second fixing hole (41), the fireproof plate (3) is provided with a first fixing hole (31), and the first fixing hole (31), the module cover plate (11) and the second fixing hole (41) are sequentially penetrated by a first fastener (5).
7. A battery pack with thermal runaway protection according to any of claims 1-6, characterized in that it comprises at least two of said battery modules (1) arranged side by side in the transverse direction, and a plurality of said fire-proof plates (3) arranged side by side in the transverse direction are fixedly connected by means of battens (6).
8. A battery pack with thermal runaway protection according to claim 7, characterized in that the bead (6) is mounted to the end of the fire protection plate (3).
9. A battery pack with thermal runaway protection according to claim 7, characterized in that two adjacent sheets of the fire protection plate (3) are of unitary construction.
10. A battery pack with thermal runaway protection according to any of claims 3-6, characterized in that it comprises at least two of said battery modules (1) arranged side by side in the longitudinal direction, said fire protection plate (3) being capable of being bonded to at least two of said module cover plates (11) simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321436573.XU CN220291002U (en) | 2023-06-06 | 2023-06-06 | Battery pack with thermal runaway protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321436573.XU CN220291002U (en) | 2023-06-06 | 2023-06-06 | Battery pack with thermal runaway protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220291002U true CN220291002U (en) | 2024-01-02 |
Family
ID=89338551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321436573.XU Active CN220291002U (en) | 2023-06-06 | 2023-06-06 | Battery pack with thermal runaway protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220291002U (en) |
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2023
- 2023-06-06 CN CN202321436573.XU patent/CN220291002U/en active Active
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