CN114678651B - Explosion-proof valve and battery pack with same - Google Patents
Explosion-proof valve and battery pack with same Download PDFInfo
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- CN114678651B CN114678651B CN202210393272.7A CN202210393272A CN114678651B CN 114678651 B CN114678651 B CN 114678651B CN 202210393272 A CN202210393272 A CN 202210393272A CN 114678651 B CN114678651 B CN 114678651B
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- Prior art keywords
- valve body
- valve
- spacer
- explosion
- shell
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- 125000006850 spacer group Chemical group 0.000 claims abstract description 114
- 238000009423 ventilation Methods 0.000 claims abstract description 35
- 238000007789 sealing Methods 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 6
- 238000007731 hot pressing Methods 0.000 abstract description 4
- 239000012528 membrane Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The invention discloses an explosion-proof valve and a battery pack with the same, comprising a valve cover, a spacer bush and a valve body, wherein the spacer bush is in interference connection with the shell through the valve body; the valve cover is provided with a channel communicated with the outside, two groups of ventilation holes are formed in the circumferential direction of the valve body, and the two groups of ventilation holes are arranged at intervals along the axial direction of the valve body; the valve body can move along the axial direction of the spacer bush, and the upper end of the valve body is provided with a waterproof and breathable film. The explosion-proof valve only comprises three independent parts, namely the valve cover, the spacer bush and the valve body, the valve body and the waterproof breathable film are compounded into a whole through a hot pressing process, the whole structure has fewer parts, the structure is simple, the parts are mutually independent and are all parts, the explosion-proof valve is connected in an inserting mode, assembly is not needed, the installation is convenient, and the cost is greatly reduced.
Description
Technical Field
The invention relates to the technical field of automobile power batteries, in particular to an explosion-proof valve and a battery pack with the same.
Background
The automobile power battery system is a high-energy lithium battery storage carrier, and the energy storage and release are realized through the mutual conversion of electric energy and chemical energy. Lithium is taken as active metal to participate in chemical reaction, abnormal release of chemical energy is easy to occur, so that the power battery system generates thermal runaway phenomena such as combustion, explosion and the like, and property loss and environmental damage are caused, and personal injury is caused in more serious cases. In order to prevent the occurrence of thermal runaway accidents and avoid unbalance of the internal pressure and the external pressure of the battery pack, an explosion-proof valve is usually arranged on a battery shell.
In the prior art, the application number is 202010621462.0, and the chinese patent application of the name "explosion-proof valve of battery pack and battery pack" discloses an explosion-proof valve structure of battery pack, and this explosion-proof valve includes: the valve body is used for being arranged on the shell of the battery pack and provided with a plurality of first ventilation holes which are axially communicated; the valve plate assembly is arranged on the valve body and provided with a closed position and a first open position; the valve core mechanism comprises a push rod and a locking piece, wherein the push rod movably penetrates through a shaft hole and can move relative to the valve body along the axial direction, the locking piece can rotate relative to the push rod so as to switch between a first circumferential position and a second circumferential position relative to the push rod, the locking piece is positioned in the shaft hole when in the first circumferential position, the locking piece is positioned outside the shaft hole so as to keep the valve plate assembly at a first opening position when in the second circumferential position, the locking piece is provided with a constraint part, a constraint joint part is arranged in the shaft hole, the constraint part is matched with the constraint joint part so as to limit the locking piece to rotate relative to the push rod, and the constraint part is disengaged from the joint part so as to stop the locking piece at the outer side of the shaft hole, so that the pressure in the battery pack can be continuously and rapidly unloaded.
Through careful analysis, the explosion-proof valve in the prior art has the advantages of complex structure, more parts, complex assembly process and higher cost.
Therefore, based on the above technical problems, a person skilled in the art needs to develop a novel explosion-proof valve and a battery pack having the same.
Disclosure of Invention
The invention aims to provide the novel explosion-proof valve and the battery pack with the same, which have the advantages that the number of parts is reduced, the structure is simple, the parts are mutually independent and are all parts, the cost is greatly reduced, and the problems in the prior art are effectively solved.
In order to achieve the above object, the present invention provides the following technical solutions:
an explosion-proof valve of the present invention is integrated on a housing having a mounting hole for mounting the explosion-proof valve, the explosion-proof valve comprising:
a valve cover;
A spacer embedded in the mounting hole; and
The valve body is arranged in the spacer bush, and the spacer bush is in interference connection with the shell through the valve body;
the valve cover is provided with a channel communicated with the outside;
two groups of ventilation holes are formed in the circumferential direction of the valve body, and the two groups of ventilation holes are arranged at intervals along the axial direction of the valve body;
the valve body can move along the axial direction of the spacer bush, and the upper end of the valve body is provided with a waterproof and breathable film.
Further, the valve body includes:
the valve body part is arranged in the spacer in a penetrating way; and
A valve body flange part formed at the upper end of the valve body main body part;
the valve body main body part and the valve body flange part are hollow and formed into a valve body cavity;
The upper end of the valve body cavity is provided with the waterproof breathable film, and the lower end of the valve body cavity is closed.
Further, the spacer includes:
the spacer body part is embedded into the mounting hole; and
A spacer flange part formed at an upper end of the spacer body part and protruding outward in a circumferential direction of the spacer body part;
the valve body main body part is arranged in the spacer bush in a penetrating way;
the spacer flange part is lapped on the upper surface of the shell;
The spacer flange part extends to a part below the mounting hole, and one side close to the shell protrudes outwards to form a lower protruding part;
The spacer is connected with the shell through the spacer flange part and the lower convex part.
Further, the two groups of ventilation holes are respectively:
A first vent hole near one side of the waterproof and breathable film and a second vent hole far one side of the waterproof and breathable film;
The valve body moves to a first position or a second position along the axial direction of the spacer bush;
When the valve body is positioned at the first position, the valve body flange part is abutted against the upper surface of the spacer flange part, and the first ventilation holes are abutted against the spacer main body part so as to realize the sealing of the first ventilation holes;
When the valve body is positioned at the second position, the flange part of the valve body drives the waterproof breathable film to be abutted against the inner wall of the valve cover, and the first ventilation holes are far away from the spacer bush and are communicated with the channel;
the valve body cavity is communicated with the inside of the shell through the second ventilation holes.
Further, the spacer bush is an elastic component;
the valve body and the valve cover are made of plastics or metals.
Further, the outer diameter of the part of the spacer body part matched with the shell is not larger than the inner diameter of the mounting hole;
the outer diameter of the valve body main body part is larger than the inner diameter of the spacer sleeve main body part;
The valve body is in interference connection with the shell by extruding the spacer bush.
Further, the valve cover includes:
A valve cover body;
Convex parts which are arranged at intervals along the periphery of the valve cover body and protrude towards the shell;
the space between adjacent convex parts is the channel;
the space between the valve cover body and the valve body flange part is a movable cavity, and the valve body moves between a first position and a second position through the movable cavity.
Further, the convex part is provided with a fixing hole;
a sealing nut column is arranged at the position of the shell, which is matched with the fixing hole;
The seal nut column is provided with a threaded hole, and the convex part and the shell are assembled and fixed through a fastening screw.
The invention discloses a battery pack, which is provided with a shell, wherein an explosion-proof valve is integrated on the shell of the battery pack.
In the technical scheme, the explosion-proof valve and the battery pack provided by the invention have the following beneficial effects:
the explosion-proof valve only comprises three independent parts, namely the valve cover, the spacer bush and the valve body, the valve body and the waterproof breathable film are compounded into a whole through a hot pressing process, the whole structure has fewer parts, the structure is simple, the parts are mutually independent and are all parts, the explosion-proof valve is connected in an inserting mode, assembly is not needed, the installation is convenient, and the cost is greatly reduced.
The valve body of the explosion-proof valve is in interference connection with the shell through the spacer, and can move along the axial direction of the spacer to switch two ventilation states.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
Fig. 1 is a schematic structural diagram of a valve body of an explosion-proof valve according to an embodiment of the present invention in a first position;
fig. 2 is a schematic structural diagram of a valve body of an explosion-proof valve according to an embodiment of the present invention in a second position;
fig. 3 is a schematic structural diagram of a valve cover of an explosion-proof valve according to an embodiment of the present invention.
Reference numerals illustrate:
1. A valve cover; 2. a spacer bush; 3. a valve body; 4. a housing;
101. a convex portion; 102. a fixing hole; 103. a channel; 104. a movable cavity;
201. a spacer body portion; 202. a spacer flange portion; 203. a lower protruding part;
301. a valve body main body; 302. a valve body flange portion; 303. a waterproof breathable film; 304. a first ventilation hole; 305. a second ventilation hole;
401. Sealing the threaded column.
Detailed Description
In order to make the technical scheme of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
See fig. 1-3;
an explosion-proof valve of this embodiment, this explosion-proof valve is integrated on casing 4, and casing 4 has the mounting hole that is used for installing the explosion-proof valve, and the explosion-proof valve includes:
a valve cover 1;
A spacer bush 2 embedded in the mounting hole; and
The valve body 3 is arranged in the spacer bush 2, and the spacer bush 2 is in interference connection with the shell 4 through the valve body 3;
The valve cover 1 has a passage 103 communicating with the outside;
Two groups of ventilation holes are formed in the circumferential direction of the valve body 3, and the two groups of ventilation holes are arranged at intervals along the axial direction of the valve body 3;
the valve body 3 can move along the axial direction of the spacer bush 2, and the upper end of the valve body 3 is provided with a waterproof and breathable film 303.
Specifically, this embodiment discloses a novel explosion-proof valve structure, and it mainly includes valve gap 1, spacer 2 and valve body 3 three parts. Wherein, the spacer bush 2 is embedded in the mounting hole of the shell 4, the valve body 3 directly stretches into the spacer bush 2, and is in interference connection with the shell 4 through the spacer bush 2. Meanwhile, the valve body 3 of the embodiment can move along the axial direction of the spacer bush 2, and the position of the vent hole is changed in the moving process, so that the circulation mode of the gas entering and exiting from the channel 103 is changed. The valve body 3 is installed in an interference connection mode, on one hand, the tightness after installation can be ensured through the spacer bush 2 of the embodiment, on the other hand, the relative position relation of three parts can be maintained, and the movement of the valve body 3 can be facilitated.
Preferably, the valve body 3 of the present embodiment includes:
a valve body 301, wherein the valve body 301 is arranged in the spacer 2 in a penetrating way; and
A valve body flange portion 302 formed at an upper end of the valve body portion 301;
The valve body main body 301 and the valve body flange 302 are formed hollow inside to be a valve body cavity;
The upper end of the valve body cavity is provided with a waterproof and breathable film 303, and the lower end of the valve body cavity is closed.
The present embodiment further defines the structure of the valve body 3, and in order to be able to cooperate with the spacer 2, the valve body 3 of the present embodiment includes a valve body main body portion 301 and a valve body flange portion 302, and the inside of the valve body main body portion 301 and the valve body flange portion 302 is hollow to form a valve body cavity which also serves as a passage through which gas flows. The waterproof and breathable film 303 is fixed at the upper end of the valve body flange portion 302 by a hot pressing process.
Preferably, the spacer 2 of the present embodiment includes:
a spacer body portion 201, the spacer body portion 201 being embedded in the mounting hole; and
A spacer flange portion 202 formed at an upper end of the spacer body portion 201 and protruding outward in a circumferential direction of the spacer body portion 201;
spacer flange 202 is overlapped on the upper surface of housing 4;
the spacer flange portion 202 extends to a portion below the mounting hole, and is formed as a lower convex portion 203 protruding outward on a side close to the housing 4;
The spacer 2 is connected to the housing 4 via a spacer flange portion 202 and a lower protruding portion 203.
First, the structure of the spacer 2 is defined in detail, which includes a spacer body portion 201 and a spacer flange portion 202, wherein the spacer body portion 201 is fitted into the mounting hole of the housing 4, and the spacer flange portion 202 abuts against the upper surface of the housing 4, and the spacer body portion 201 is held in position with the housing 4 by the sandwiching structure formed by the spacer flange portion 202 and the lower protruding portion 203, and the spacer 2 is riveted to the housing 4.
Wherein, two sets of bleeder vents are respectively:
A first ventilation hole 304 on the side close to the waterproof and breathable film 303 and a second ventilation hole 305 on the side far away from the waterproof and breathable film 303;
The valve body 3 moves to a first position or a second position along the axial direction of the spacer bush 2;
Referring to fig. 1, when the valve body 3 is in the first position, the valve body flange 302 abuts against the upper surface of the spacer flange 202, and the first ventilation hole 304 abuts against the spacer body 201 to close the first ventilation hole 304;
Referring to fig. 2, when the valve body 3 is in the second position, the flange 302 of the valve body drives the waterproof and breathable membrane 303 to abut against the inner wall of the valve cover 1, and the first ventilation hole 304 is far away from the spacer 2 and is communicated with the channel 103;
the valve body cavity communicates with the inside of the housing 4 through the second ventilation hole 305.
Wherein, the spacer bush 2 is an elastic component;
The valve body 3 and the valve cover 1 are both made of plastics or metals.
The valve body 3 of the present embodiment has two positions in the operating state, the first position and the second position described above, respectively. The two groups of air holes are distributed at intervals along the axial direction of the valve body, and each group of air holes comprises a plurality of air holes distributed at intervals along the circumferential direction of the valve body main body 301. The position of the valve body 3 is changed mainly by changing the position of the first ventilation hole 304 relative to the spacer 2, so as to change the ventilation mode of the gas. The method comprises the following steps:
in normal use, namely, the valve body is in a first position, the first air holes 304 close to the waterproof air permeable membrane 303 are positioned in the spacer bush 2, the spacer bush flange 202 of the spacer bush 2 is abutted against the shell 4, the valve body flange 302 of the valve body 3 is abutted against the spacer bush flange 202, external air enters from the channel 103 and flows through the waterproof air permeable membrane 303, and enters the battery pack through the second air holes 305 far away from the waterproof air permeable membrane 303, so that internal and external pressure is balanced, dew condensation is prevented, when the battery pack is out of control, the air pressure in the battery pack is increased to a certain value, the valve body 3 is jacked up, the waterproof air permeable membrane 303 abuts against the inner wall of the valve cover 1, at the moment, the valve body 3 is in a second position, the two air holes are exposed out of the spacer bush 2, and external air passes through the first air holes 304 close to the waterproof air permeable membrane 303 and enters the battery pack through the second air holes 305 far away from the waterproof air permeable membrane 303.
In order to achieve interference connection between the valve body 3 and the housing 4, the spacer 2 of the present embodiment is made of an elastic member, preferably rubber. More specifically, the method comprises the following steps:
the outer diameter of the part of the spacer body 201 matched with the shell 4 is not larger than the inner diameter of the mounting hole;
The outer diameter of the valve body 301 is greater than the inner diameter of the spacer body 201;
the valve body 3 is formed into an interference connection with the housing 4 by pressing the spacer 2.
When the valve body 3 is not provided with the spacer bush 2 and the spacer bush 2 is extruded, the spacer bush 2 is not extruded to the shell 4, and because the outer diameter of the valve body 3 is larger than the inner diameter of the spacer bush 2, when the valve body 3 is embedded into the spacer bush 2, because the spacer bush 2 is an elastic piece, the outer diameter of the spacer bush 2 can be increased under the extrusion of the valve body 3, so that interference connection with the shell 4 is formed.
Preferably, the valve cover 1 of the present embodiment includes:
A valve cover body;
convex portions 101 arranged at intervals along the outer periphery of the valve cover body and protruding toward the housing 4;
the space between adjacent convex parts 101 is a channel 103;
the space between the valve cover body and the valve body flange part 302 is a movable cavity 104, and the valve body 3 moves between a first position and a second position through the movable cavity 104.
Wherein, the convex part 101 is provided with a fixing hole 102;
a sealing threaded column 401 is arranged at the position of the shell 4 matched with the fixing hole 102;
the seal screw column 401 has a screw hole, and the boss 101 is fixed to the housing 4 by a fastening screw.
The installation mode of the embodiment is an external installation mode, and only the shell 4 is required to be installed and fixed from the outside, so that the installation and the disassembly are convenient.
The invention discloses a battery pack, which is provided with a shell 4, wherein an explosion-proof valve is integrated on the shell 4 of the battery pack.
In the technical scheme, the explosion-proof valve and the battery pack provided by the invention have the following beneficial effects:
the explosion-proof valve only comprises three independent parts of the valve cover 1, the spacer bush 2 and the valve body 3, the valve body 3 is compounded with the waterproof breathable film 303 into a whole through a hot pressing process, the whole structure has fewer parts, the structure is simple, the parts are mutually independent and are all parts, the parts are connected in an inserting mode, the assembly is not needed, the installation is convenient, and the cost is greatly reduced.
According to the explosion-proof valve, the valve body 3 is in interference connection with the shell 4 through the spacer bush 2, and can move along the axial direction of the spacer bush 2 to switch two ventilation states, and the spacer bush 2 is an elastic piece, so that the movable connection mode is simple, and the valve body 3 is convenient to move.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the invention, which is defined by the appended claims.
Claims (6)
1. An explosion-proof valve integrated on a housing (4), the housing (4) having a mounting hole for mounting the explosion-proof valve, characterized in that the explosion-proof valve comprises:
A valve cover (1);
A spacer bush (2) embedded in the mounting hole; and
The valve body (3) is arranged in the spacer bush (2), and the spacer bush (2) is in interference connection with the shell (4) through the valve body (3);
the valve body (3) and the spacer bush (2) are assembled on the shell (4) from the outside of the shell (4);
the valve cover (1) is provided with a channel (103) communicated with the outside;
Two groups of ventilation holes are formed in the circumferential direction of the valve body (3), and the two groups of ventilation holes are arranged at intervals along the axial direction of the valve body (3);
The valve body (3) can move along the axial direction of the spacer bush (2), and the upper end of the valve body (3) is provided with a waterproof and breathable film (303);
the valve body includes:
A valve body main body (301), wherein the valve body main body (301) is penetrated in the spacer bush (2); and
A valve body flange part (302) formed at the upper end of the valve body main body part (301);
The valve body main body part (301) and the valve body flange part (302) are internally hollow and formed into a valve body cavity;
The upper end of the valve body cavity is provided with the waterproof breathable film (303), and the lower end of the valve body cavity is closed;
the spacer bush (2) comprises:
A spacer body portion (201), the spacer body portion (201) being embedded in the mounting hole; and
A spacer flange portion (202) formed at an upper end of the spacer body portion (201) and protruding outward in a circumferential direction of the spacer body portion (201);
The valve body main body part (301) is arranged in the spacer bush (2) in a penetrating way;
the spacer flange part (202) is lapped on the upper surface of the shell (4);
The spacer flange part (202) extends to a part below the mounting hole, and one side close to the shell (4) protrudes outwards to form a lower protruding part (203);
The spacer bush (2) is connected with the shell (4) through the spacer bush flange part (202) and the lower convex part (203);
the two groups of ventilation holes are respectively:
A first ventilation hole (304) near one side of the waterproof ventilation film (303) and a second ventilation hole (305) far from one side of the waterproof ventilation film (303);
the valve body (3) moves to a first position or a second position along the axial direction of the spacer bush (2);
when the valve body (3) is positioned at the first position, the valve body flange part (302) is abutted against the upper surface of the spacer flange part (202), and the first ventilation hole (304) is abutted against the spacer main body part (201) so as to realize the sealing of the first ventilation hole (304);
When the valve body (3) is positioned at the second position, the valve body flange part (302) drives the waterproof breathable film (303) to be abutted against the inner wall of the valve cover (1), and the first ventilation holes (304) are far away from the spacer bush (2) and are communicated with the channel (103);
The valve body cavity is communicated with the inside of the shell (4) through the second ventilation holes (305);
the spacer bush (2) is an elastic component.
2. The explosion-proof valve according to claim 1, wherein the valve body (3) and the valve cover (1) are both made of plastic or metal.
3. The explosion-proof valve according to claim 1, wherein an outer diameter of a portion of the spacer body portion (201) mated with the housing (4) is not larger than an inner diameter of the mounting hole;
The outer diameter of the valve body main body part (301) is larger than the inner diameter of the spacer body part (201);
The valve body (3) is connected with the shell (4) in an interference mode by extruding the spacer bush (2).
4. The explosion-proof valve according to claim 1, wherein the valve cover (1) comprises:
A valve cover body;
Convex parts (101) which are arranged at intervals along the periphery of the valve cover body and protrude towards the shell (4);
the space between adjacent convex parts (101) is the channel (103);
The space between the valve cover body and the valve body flange part (302) is a movable cavity (104), and the valve body (3) moves between a first position and a second position through the movable cavity (104).
5. The explosion-proof valve according to claim 4, wherein the protrusion (101) is provided with a fixing hole (102);
A sealing nut column (401) is arranged at the position of the shell (4) matched with the fixing hole (102);
The seal nut column (401) is provided with a threaded hole, and the convex part (101) and the shell (4) are assembled and fixed through a fastening screw.
6. Battery pack having a housing, characterized in that the housing (4) of the battery pack is integrated with an explosion-proof valve according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210393272.7A CN114678651B (en) | 2022-04-14 | 2022-04-14 | Explosion-proof valve and battery pack with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210393272.7A CN114678651B (en) | 2022-04-14 | 2022-04-14 | Explosion-proof valve and battery pack with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114678651A CN114678651A (en) | 2022-06-28 |
| CN114678651B true CN114678651B (en) | 2024-04-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210393272.7A Active CN114678651B (en) | 2022-04-14 | 2022-04-14 | Explosion-proof valve and battery pack with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114678651B (en) |
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