CN213816262U - Protection device and battery pack - Google Patents
Protection device and battery pack Download PDFInfo
- Publication number
- CN213816262U CN213816262U CN202022679825.4U CN202022679825U CN213816262U CN 213816262 U CN213816262 U CN 213816262U CN 202022679825 U CN202022679825 U CN 202022679825U CN 213816262 U CN213816262 U CN 213816262U
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- China
- Prior art keywords
- explosion
- proof valve
- protection device
- top wall
- wall
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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
- 238000009434 installation Methods 0.000 claims abstract description 7
- 230000001681 protective effect Effects 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000013618 particulate matter Substances 0.000 abstract description 3
- 239000008187 granular material Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 16
- 230000000694 effects Effects 0.000 description 3
- 230000003116 impacting effect Effects 0.000 description 3
- 230000001012 protector Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005555 metalworking Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Battery Mounting, Suspending (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model belongs to the technical field of the battery, a protection device and battery package is specifically disclosed for the explosion-proof valve of installation on the box of protection battery package. The protective device includes a top wall and a side wall. The side wall is connected with the top wall and jointly surrounds to form a cover body, and the side wall is provided with an exhaust hole. The cover body can be arranged on the inner wall of the box body and covers the explosion-proof valve. The battery pack comprises the protection device. When the battery pack is out of control due to heat, due to the shielding of the top wall, the explosion-proof valve is prevented from being damaged by impact caused by direct impact of high-pressure gas, and the safety of the explosion-proof valve is improved. Simultaneously, the roof can adsorb particulate matter, avoids particulate matter to strike explosion-proof valve to and the granule of high temperature takes place to catch fire in explosion-proof valve and the interface of external environment contact, leads to explosion-proof valve to be burnt and melt.
Description
Technical Field
The utility model belongs to the technical field of the battery, especially, relate to a protection device and battery package.
Background
Install explosion-proof valve on the box of present battery package, when the inside thermal runaway that takes place of battery package, a large amount of high temperature, the high-pressure gas of production release the battery package outside through explosion-proof valve, avoid the battery package explosion.
When the battery pack is out of control, a large amount of high-temperature and high-pressure gas directly flows out through the pressure relief channel of the explosion-proof valve, and the explosion-proof valve is easily impacted and damaged. Moreover, the inclusion of a large amount of particulate matter in the gas further increases the level of damage to the explosion proof valve.
In addition, high-temperature particulate matters are in full contact with oxygen in an interface where the explosion-proof valve is in contact with the external environment, fire may occur, the explosion-proof valve is burnt by high-temperature flame, and the out-of-control of the battery pack is aggravated.
Therefore, a protection device and a battery pack are required to solve the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a protection device to avoid the explosion-proof valve on the box to be caused the impact by the gaseous direct impact of thermal runaway to destroy, and avoid the explosion-proof valve to be burnt by high temperature flame and melt.
To achieve the purpose, the technical proposal adopted by the utility model is that:
a protection device for protecting an explosion-proof valve installed on a case of a battery pack, comprising:
a top wall of the container body,
the side wall is connected with the top wall and jointly surrounded to form a cover body, and the side wall is provided with an exhaust hole; the cover body can be arranged on the inner wall of the box body and covers the explosion-proof valve.
Furthermore, the number of the side walls is multiple, and the side walls are respectively vertically connected to the periphery of the top wall and jointly enclose the cover body with the top wall to form a bottom opening.
Further, each side wall is provided with a plurality of exhaust holes, and the exhaust holes are uniformly distributed on the corresponding side wall.
Further, the surface of the top wall in the cover body is inwards sunken to form a containing cavity.
Further, the end portion of the side wall far away from the top wall extends perpendicularly to be connected with a support lug, a fixing hole is formed in the support lug, and the cover body is connected to the inner wall of the box body through the fixing hole in a bolt mode.
Further, the lug is perpendicularly connected to a middle portion of the end portion of the side wall.
Further, the protection device is a protection cover formed by processing metal plates.
Another object of the utility model is to provide a battery pack to avoid explosion-proof valve on the box to be caused by the gaseous direct impact of thermal runaway to strike and destroy, and avoid explosion-proof valve to be burnt by high temperature flame and melt.
To achieve the purpose, the technical proposal adopted by the utility model is that:
a battery pack comprises the protection device.
Further, the projection area of the top wall on the installation wall of the box body, on which the explosion-proof valve is installed, is larger than the area of the installation wall occupied by the explosion-proof valve.
Further, the explosion-proof valve is opposite to the middle position of the top wall.
The utility model has the advantages that:
the utility model provides a protection device installs in the box inner wall of battery package, and covers and establish on explosion-proof valve. When the battery pack is out of control due to heat, the top wall is shielded, so that the explosion-proof valve is prevented from being directly impacted by high-temperature and high-pressure gas to generate impact damage, and the safety of the explosion-proof valve is improved. Meanwhile, the top wall can adsorb particulate matters mixed in high-temperature and high-pressure gas by utilizing the relatively low temperature of the top wall, so that the particulate matters are prevented from impacting the explosion-proof valve, and the high-temperature particulate matters are ignited in an interface of the explosion-proof valve in contact with the external environment, so that the explosion-proof valve is burnt, and the safety of the explosion-proof valve is further improved.
The utility model provides a battery package, above-mentioned protection device install in the box inner wall of battery package, and cover and establish on explosion-proof valve. When the battery pack is out of control due to heat, due to the shielding of the top wall, the explosion-proof valve is prevented from being directly impacted by high-temperature and high-pressure gas to generate impact damage, and the safety of the battery pack is improved. Meanwhile, the top wall can adsorb particulate matters mixed in high-temperature and high-pressure gas by utilizing the relatively low temperature of the top wall, so that the explosion-proof valve is prevented from being impacted by the particulate matters, and the high-temperature particulate matters are ignited in an interface of the explosion-proof valve in contact with the external environment, so that the explosion-proof valve is burnt, and the safety of the battery pack is further improved.
Drawings
Fig. 1 is a schematic structural diagram of a protection device at a first viewing angle according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a protection device at a second viewing angle according to an embodiment of the present invention.
The component names and designations in the drawings are as follows:
10. a protection device; 1. a top wall; 2. a side wall; 21. an exhaust hole; 3. supporting a lug; 31. and (7) fixing holes.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
As shown in fig. 1 and 2, the present embodiment discloses a protection device 10 for protecting an explosion-proof valve mounted on a case of a battery pack. The protective means 10 comprises a top wall 1 and side walls 2. The side wall 2 is connected with the top wall 1 and jointly enclosed to form a cover body, and the side wall 2 is provided with an exhaust hole 21. The cover body can be arranged on the inner wall of the box body and covers the explosion-proof valve.
The utility model provides a protection device 10 installs in the box inner wall of battery package, and covers and establish on explosion-proof valve. Because the side wall 2 is provided with the vent hole 21, high-temperature and high-pressure gas can be discharged out of the box body through the vent hole 21 and the explosion-proof valve in sequence, and the normal use of the explosion-proof valve cannot be influenced. When the battery pack is out of control due to heat, the top wall 1 is shielded, so that the explosion-proof valve is prevented from being directly impacted by high-temperature and high-pressure gas to generate impact damage, and the safety of the explosion-proof valve is improved. Meanwhile, the top wall 1 can adsorb particulate matters mixed in high-temperature and high-pressure gas by using the relatively low temperature of the top wall, so that the particulate matters are prevented from impacting the explosion-proof valve, and the high-temperature particulate matters are ignited in an interface of the explosion-proof valve in contact with the external environment, so that the explosion-proof valve is burnt, and the safety of the explosion-proof valve is further improved.
The protector 10 of the present embodiment is a protective cover formed by sheet metal working. The protection device 10 is made of metal, so that the strength and the pressure resistance of the protection device 10 are ensured. The sheet metal machining efficiency is high. Preferably, the side walls 2 are respectively vertically connected to the periphery of the top wall 1, and together with the top wall 1, form a cover body with an open bottom.
The protector 10 may be a cylindrical-structured housing or a cubic-structured housing. The protection device 10 of the embodiment is a cover body with a cubic structure, and is convenient to process and manufacture. Specifically, the protection device 10 comprises a top wall 1 and four side walls 2, and the top wall 1 and the four side walls 2 are connected to form a cover body in a cubic structure. Because the side walls 2 are arranged in pairs oppositely, high-temperature and high-pressure gas enters the inner cavity of the cover body through the exhaust holes 21 of the side walls 2, partial impact force of the gas is counteracted, and the safety of the explosion-proof valve is further improved.
Of course, the number of side walls 2 can also be two, two side walls 2 being oppositely arranged and joined to the top wall 1 to form an inverted "U" -shaped cap.
Preferably, each side wall 2 is provided with a plurality of exhaust holes 21, and the plurality of exhaust holes 21 are uniformly distributed on the corresponding side wall 2.
As shown in fig. 1, the exhaust hole 21 is a strip-shaped hole, and the plurality of exhaust holes 21 can increase the gas entering amount, so that the exhaust efficiency of the explosion-proof valve is improved, and the thermal runaway gas is conveniently and timely discharged out of the box body. The solid portions between the plurality of exhaust holes 21 increase the strength of the side wall 2, thereby increasing the pressure resistance of the protector 10.
The surface of the top wall 1 in the cover body of the embodiment is inwards sunken to form a containing cavity. The container is used for containing high-temperature particulate matters adsorbed by the top wall 1, and the particulate matters are prevented from impacting the explosion-proof valve along with gas or being ignited at the outlet of the explosion-proof valve.
Continuing as shown in fig. 1 and 2, the end portion of the side wall 2 far from the top wall 1 is vertically extended and connected with a support lug 3, the support lug 3 is provided with a fixing hole 31, and the cover body is connected to the inner wall of the box body through the fixing hole 31 by a bolt. The support lug 3 is vertically connected to the side wall 2, and the support lug 3 is horizontally arranged, so that the support lug can be conveniently abutted against the inner wall of the box body, and the stable connection of the protection device 10 is realized.
The protection device 10 of this embodiment passes through bolted connection with the box, and joint strength is high, when receiving high temperature, highly compressed gas impact, is difficult for taking place the displacement or destroying, is favorable to improving the protection effect of protection device 10 to explosion-proof valve.
Optimally, the support lug 3 is vertically connected to the middle part of the end part of the side wall 2, so that the volume and the weight of the support lug 3 are reduced, the installation of the protection device 10 is convenient, and the light weight of the protection device 10 is realized.
The present embodiment also discloses a battery pack (not shown) including the protection device 10 described above. Specifically, this battery pack still includes electric core module and box, and wherein electric core module installs in inclosed box, installs the explosion-proof valve on the box, and protection device 10 installs in the inner wall of box, and covers and locate the explosion-proof valve on to the explosion-proof valve is avoided the impact and is destroyed or is burnt and melt in the protection.
Preferably, the projection area of the top wall 1 on the installation wall of the box body provided with the explosion-proof valve is larger than the area of the installation wall occupied by the explosion-proof valve, so that the cover body of the protection device 10 can completely cover the explosion-proof valve, and the protection range and the protection effect of the protection device 10 are increased.
Preferably, the explosion-proof valve is opposite to the middle position of the top wall 1. When the protection device 10 covers the explosion-proof valve, the explosion-proof valve is opposite to the middle position of the top wall 1, so that the air inflow of each side wall 2 is approximately equal, and the pressure relief efficiency of the explosion-proof valve is improved.
The above embodiments have been described only the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and is not departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a protection device for the explosion-proof valve of installation on the box of protection battery package, its characterized in that includes:
a top wall (1),
the side wall (2) is connected with the top wall (1) and jointly surrounded to form a cover body, and the side wall (2) is provided with an exhaust hole (21); the cover body can be arranged on the inner wall of the box body and covers the explosion-proof valve.
2. The protection device according to claim 1, characterized in that the number of the side walls (2) is multiple, and the multiple side walls (2) are respectively vertically connected to the periphery of the top wall (1) and jointly enclose the top wall (1) to form the cover body with an open bottom.
3. The protection device according to claim 2, characterized in that each side wall (2) is provided with a plurality of said exhaust holes (21), and said exhaust holes (21) are uniformly distributed on the corresponding side wall (2).
4. The protection device according to claim 1, characterized in that the surface of the top wall (1) inside the casing is recessed inwards forming a housing cavity.
5. The protection device of claim 1, wherein the end portion of the side wall (2) far away from the top wall (1) is vertically extended and connected with a support lug (3), the support lug (3) is provided with a fixing hole (31), and the cover body is connected to the inner wall of the box body through the fixing hole (31) by a bolt.
6. The protection device according to claim 5, characterized in that said lugs (3) are connected perpendicularly to the median portion of the ends of said lateral walls (2).
7. A protection device according to any one of claims 1-6, characterized in that the protection device is a protective cover machined from sheet metal.
8. A battery pack comprising the protection device according to any one of claims 1 to 7.
9. The battery pack according to claim 8, wherein a projected area of the top wall (1) on a mounting wall of the case where the explosion-proof valve is mounted is larger than an area of the explosion-proof valve on the mounting wall.
10. Battery pack according to claim 8, characterized in that the explosion-proof valve is directed against an intermediate position of the top wall (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022679825.4U CN213816262U (en) | 2020-11-18 | 2020-11-18 | Protection device and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022679825.4U CN213816262U (en) | 2020-11-18 | 2020-11-18 | Protection device and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213816262U true CN213816262U (en) | 2021-07-27 |
Family
ID=76936019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022679825.4U Active CN213816262U (en) | 2020-11-18 | 2020-11-18 | Protection device and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213816262U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115588805A (en) * | 2022-11-04 | 2023-01-10 | 厦门海辰储能科技股份有限公司 | Lower plastic of battery, top cap subassembly and battery of battery |
-
2020
- 2020-11-18 CN CN202022679825.4U patent/CN213816262U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115588805A (en) * | 2022-11-04 | 2023-01-10 | 厦门海辰储能科技股份有限公司 | Lower plastic of battery, top cap subassembly and battery of battery |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |