CN214625294U - Battery explosion-proof valve, lithium ion power battery pack and electric automobile - Google Patents
Battery explosion-proof valve, lithium ion power battery pack and electric automobile Download PDFInfo
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- CN214625294U CN214625294U CN202120417096.7U CN202120417096U CN214625294U CN 214625294 U CN214625294 U CN 214625294U CN 202120417096 U CN202120417096 U CN 202120417096U CN 214625294 U CN214625294 U CN 214625294U
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- valve seat
- battery
- valve
- adjusting
- sealing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model discloses a battery explosion-proof valve, a lithium ion power battery pack and an electric automobile, wherein the battery explosion-proof valve is applied to an exhaust port of a battery box and comprises a valve seat, a sealing element, an adjusting element and an elastic element, and the valve seat can be connected to a shell of the battery box; the sealing element is arranged in the valve seat and can abut against the exhaust port; the adjusting part comprises an operating part and an adjusting part, the operating part extends out of the valve seat, the adjusting part extends into the valve seat, and the adjusting part can be suitable for moving in the valve seat by operating the operating part; the elastic piece is connected between the adjusting part and the sealing piece; the elastic force applied to the sealing member by the elastic member is adapted to be adjusted by the moving distance of the adjusting portion within the valve seat. Aiming at manufacturing battery packs with different design parameters, an operator controls the adjusting piece, and the adjusting piece adjusts the shrinkage of the elastic piece, so that the elastic force of the elastic piece on the sealing piece is controlled, and the requirements of the battery packs with different design parameters on the battery explosion-proof valve are met.
Description
Technical Field
The utility model relates to a technical field of lithium cell especially relates to a battery explosion-proof valve, lithium ion power battery package and electric automobile.
Background
In the related art, in the manufacturing process of the power battery, the waterproof and dustproof grade required by IP67 and the like needs to be met, and meanwhile, when thermal runaway occurs in the battery pack, gas generated in the battery pack can be discharged in time, so that the risks of explosion and fire are reduced. In the existing power battery structure, a battery explosion-proof valve is mainly adopted to realize the function; however, according to the requirements of the electric devices, the design parameters of the battery pack are different to adapt to different electric devices, so that the battery explosion-proof valve is also designed to be different in model, the battery explosion-proof valves of different models are adapted to different battery packs, and the battery explosion-proof valves of different models increase the manufacturing cost of manufacturers.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a battery explosion-proof valve, battery package that can the different design parameter of adaptation.
The utility model discloses still provide a lithium ion power battery package with above-mentioned battery explosion-proof valve.
The utility model also provides an electric automobile who has above-mentioned lithium ion power battery package.
According to the utility model discloses a battery explosion-proof valve, include:
a valve seat connectable to a housing of the battery case;
a sealing member disposed in the valve seat and capable of abutting against the exhaust port;
an adjusting member including an operating portion extending out of the valve seat and an adjusting portion extending inside the valve seat, the adjusting portion being adapted to be moved inside the valve seat by operation of the operating portion;
one end of the elastic piece is connected with the sealing piece so that the sealing piece can be pressed on the exhaust port, and the other end of the elastic piece is connected with the adjusting part; the elastic force applied to the sealing member by the elastic member is adapted to be adjusted by a moving distance of the adjusting portion within the valve seat.
According to the utility model discloses battery explosion-proof valve has following beneficial effect at least: to the battery package of different design parameters, operating personnel is through adjusting the operation portion, the displacement of predetermineeing the distance takes place for the gas vent for the operation portion, and then make the displacement that the adjustment portion took place the predetermined distance for the gas vent, the elastic component takes place predetermined compression capacity under the effect of adjustment portion, the elastic force that the sealing member received obtains adjusting, thereby make the sealing member compress tightly and change in the packing force of gas vent, and then make the sealing member just adapt to the demand of this design parameter's battery package to battery explosion-proof valve to the packing force of gas vent. In conclusion, the battery explosion-proof valve can meet the requirements of different battery packs on the battery explosion-proof valve, and the cost is saved.
According to some embodiments of the present invention, the battery explosion-proof valve further comprises a guide, the guide being connected to the sealing member and slidably connected to the valve seat.
According to some embodiments of the invention, the valve seat is provided with a guide sleeve, the guide sleeve is internally limited with the locating hole of guide sliding connection.
According to some embodiments of the present invention, the elastic member is a coil spring, and is sleeved on the guide member.
According to some embodiments of the utility model, the battery explosion-proof valve is still including compressing tightly the piece, the regulating part connect in compress tightly the back of piece, coil spring's one end is supported and is held the sealing member back, and the other end is supported and is held compress tightly the front of piece.
According to some embodiments of the invention, the pressing member is provided with a guide hole for the guide member to pass through.
According to some embodiments of the invention, the coil spring has a plurality of abutting positions on the back of the sealing element.
According to some embodiments of the invention, the adjusting member is screwed to the valve seat and arranged against the elastic member.
According to some embodiments of the invention, the adjusting member is screwed to the valve seat and arranged against the elastic member.
According to the utility model discloses a lithium ion power battery package, including foretell lithium ion power battery package.
According to the utility model discloses lithium ion power battery package has following beneficial effect at least: the battery pack adopts the battery explosion-proof valve, and an operator can control the position of the adjusting part in the valve seat by adjusting the operating part, so that the compression amount of the elastic part is controlled. So, the sealing member receives the elastic force of elastic component to obtain adjusting to the battery box of the different parameters of battery explosion-proof valve adaptation, and then the battery package of this battery box is used in the adaptation.
According to the utility model discloses an electric automobile, including foretell electric automobile.
According to the utility model discloses electric automobile has following beneficial effect at least: the electric equipment adopts the lithium ion power battery pack, the lithium ion power battery pack adopts the battery explosion-proof valve, and the pressing force of a sealing element of the battery explosion-proof valve on the battery pack is adjusted, so that the battery explosion-proof valve is adaptive to different battery packs, and the battery packs are adaptive to different electric automobiles.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention will be further described with reference to the following drawings and examples, in which:
fig. 1 is a schematic overall structure diagram of a battery explosion-proof valve according to an embodiment of the present invention;
FIG. 2 is a schematic view of the vertical explosion structure of FIG. 1;
fig. 3 is an inner side structure diagram of the valve seat according to the embodiment of the present invention.
Reference numerals:
the valve seat 100, the accommodating cavity 110, the opening 111, the lug 120, the through hole 121, the guide sleeve 130 and the guide hole 131;
a sealing member 200, a guide member 210, a packing 220;
an elastic member 300, a coil spring 310;
the pressing member 400, the positioning hole 410;
an adjusting member 500, an adjusting portion 510, and an operating portion 520.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means is one or more, a plurality of means is two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
According to the utility model discloses a battery explosion-proof valve, refer to fig. 1 and 2, an exhaust port for a battery box comprises a valve seat 100, a sealing element 200, an adjusting element 500 and an elastic element 300, wherein the valve seat 100 can be connected to the shell of the battery box; the sealing member 200 is disposed in the valve seat 100 and can abut against the exhaust port; the adjuster 500 includes an operating portion 520 and an adjusting portion 510, the operating portion 520 protruding out of the valve seat 100, the adjusting portion 510 extending in the valve seat 100, the adjusting portion 510 adapted to move in the valve seat 100 by the operation of the operating portion 520; one end of the elastic member 300 is connected to the sealing member 200 so that the sealing member 200 can be pressed against the exhaust port, and the other end of the elastic member 300 is connected to the regulating portion 510 of the regulating member 500; the elastic force applied to the sealing member 200 by the elastic member 300 is adapted to be adjusted by the moving distance of the adjusting portion 510 within the valve seat 100.
Specifically, when the battery explosion-proof valve is used, the valve seat 100 is installed at the outer side of the battery box, and the sealing element 200 abuts against the exhaust port of the battery box, so that the exhaust port is sealed; meanwhile, the elastic element 300 is connected between the adjusting element 500 and the sealing element 200, and under the action of the adjusting portion 510, the elastic element 300 applies a sufficient elastic force to the sealing element 200, so that the sealing element 200 is firmly abutted against the exhaust port, and the sealing element 200 can better seal the exhaust port. When the battery pack is in thermal runaway, the pressure in the battery pack is increased, and the gas in the battery pack can overcome the blocking force of the elastic piece 300 on the sealing piece 200, so that the sealing piece 200 moves to one side far away from the exhaust port and is exhausted from the exhaust port, and the risks of explosion and fire of the battery pack are reduced.
In addition, for manufacturing battery packs with different design parameters, an operator adjusts the operating part 520, the operating part 520 displaces a preset distance relative to the exhaust port, and then the adjusting part 510 displaces a preset distance relative to the exhaust port, the elastic member 300 generates a preset compression amount under the action of the adjusting part 510, and the elastic force applied to the sealing member 200 is adjusted, so that the pressing force of the sealing member 200 on the exhaust port is changed, and further the pressing force of the sealing member 200 on the exhaust port is just matched with the requirement of the battery pack with the design parameters on the battery explosion-proof valve. In conclusion, by adopting the battery explosion-proof valve, when the battery pack is manufactured, a manufacturer only needs one battery explosion-proof valve, but the requirements of different battery packs on the battery explosion-proof valves are met, and the cost is saved.
In some embodiments, the sealing member 200 is made of a steel material into a sheet-shaped body, and the front surface of the sealing member 200 is attached to the outer wall of the battery case, thereby sealing the exhaust port; further, a sealing ring 220 is disposed between the front surface of the sealing member 200 and the battery box in an abutting manner, and the sealing ring 220 is located around the exhaust port, so that the sealing member 200 is further hermetically connected with the battery box, and the exhaust port is preferably sealed.
The sealing member 200 covers a large area of the battery case due to the large size of the exhaust port. In some embodiments, in order to enable the sealing member 200 to be firmly abutted against the sealing ring 220, the elastic member 300 is provided in plurality and is distributed around the center of the sealing member 200, so that a plurality of positions around the sealing member 200 are all subjected to the elastic force of the elastic member 300, so that the sealing member 200 is more tightly attached to the sidewall of the sealing ring 220, and the sealing ring 220 is more tightly attached to the battery box. As can be seen, the sealing member 200 is tightly connected to the battery case by providing a plurality of elastic members 300.
In some embodiments, the valve seat 100 is a housing disposed outside the battery box, the valve seat 100 defines a receiving cavity 110 therein, and the sealing element 200 and the elastic element 300 are both located in the receiving cavity 110, so that the sealing element 200 and the coil spring 310 are better protected, and the sealing element 200 can better abut against the position of the exhaust port; furthermore, an opening 111 penetrating through the inner wall and the outer wall of the valve seat 100 is reserved on the side wall of the valve seat 100, and hot air exhausted from the exhaust port can be rapidly exhausted to the outer side of the valve seat 100 through the opening 111. Meanwhile, the edge of the outer wall of the valve seat 100 is provided with a lug 120 extending to one side far away from the valve seat 100, the lug 120 is provided with a through hole 121 facing the battery box, a screw (not shown in the figure) penetrates through the through hole 121, and the screw is in threaded connection with the battery box, so that the valve seat 100 is fixedly connected to the outer side of the battery box.
In order to move the sealing member 200 precisely away from or close to the exhaust port, it is preferable to seal the exhaust port. In some embodiments, the back surface of the sealing member 200 is welded with the guiding member 210 perpendicularly, that is, the side of the sealing member 200 away from the battery box, the guiding member 210 is a cylindrical body extending to the side away from the sealing member 200 and is slidably connected with the valve seat 100, so that the sealing member 200 is slidably disposed on the valve seat 100 through the guiding member 210; since the valve seat 100 is fixedly mounted on the outer side of the battery case and the seal 200 is slidably mounted on the battery case via the guide 210, the seal 200 is guided with respect to the battery case, and the guide direction is directed toward the exhaust port. By adopting the above scheme, when the elastic member 300 is compressed by the adjusting part 510, the sealing member 200 can accurately move towards the exhaust port under the action of the elastic member 300 and the guidance of the guide member 210, so that the exhaust port is better sealed; on the contrary, when the compression amount of the elastic member 300 is reduced, the sealing member 200 slightly moves to the side away from the exhaust port under the action of the sealing ring 220, and the sealing member 200 does not move in other directions under the action of the guide member 210, so that the sealing member 200 can still maintain a better seal against the exhaust port.
Further, in order to slidably mount the sealing member 200 on the valve seat 100, a guide sleeve 130 (see fig. 3) facing the battery box is fixedly disposed on a bottom surface of the receiving chamber 110, a guide hole 131 is defined in the guide sleeve 130, and the guide member 210 is slidably coupled to the guide hole 131, thereby slidably coupling the guide member 210 to the valve seat 100. Moreover, when the guide member 210 is installed, an operator only needs to slide the guide member 210 into the guide hole 131 from one port of the guide hole 131, so as to realize the sliding connection between the guide sleeve 130 and the guide hole 131, and it is seen that the guide member 210 is convenient to install and disassemble, and further the sealing member 200 and the valve seat 100 are convenient to install and disassemble.
In some embodiments, the elastic member 300 is a coil spring 310, the coil spring 310 is sleeved on the guide member 210 and is abutted between the adjusting portion 510 and the sealing member 200, so that when the adjusting portion 510 moves towards the inner side of the accommodating cavity 110, the coil spring 310 is compressed, and at this time, the coil spring 310 is compressed along the length direction of the guide member 210, so that the coil spring 310 is compressed better, and the coil spring 310 presses the sealing member 200 better; and, by the arrangement of the guide 210, the installation of the coil spring 310 between the regulating part 510 and the sealing member 200 is facilitated,
it should be noted that, since the coil spring 310 is provided in plural, the guide members 210 are designed in a corresponding number for installation of the coil spring 310; when the coil springs 310 are compressed, the guide 210 guides the coil springs 310.
In some embodiments, it is further convenient to compress the plurality of coil springs 310, a plate-shaped pressing member 400 is disposed between the coil springs 310 and the adjusting portion 510, the pressing member 400 is disposed parallel to the sealing member 200, the pressing member 400 is partitioned by positioning holes 410 equal to the number of the guide members 210, and the guide members 210 are slidably disposed through the positioning holes 410, so as to achieve accurate positioning of the pressing member 400; one end of the coil spring 310 abuts against the back surface of the sealing member 200, the other end of the coil spring 310 abuts against the front surface of the pressing member 400, and one end of the adjusting portion 510 abuts against the back surface of the pressing member 400; specifically, when the adjusting element 500 moves towards the accommodating cavity 110, the adjusting portion 510 pushes the pressing element 400 to move along the guiding element 210, and the pressing element 400 simultaneously pushes the plurality of coil springs 310 to contract, so as to push the sealing element 200 to move towards the exhaust port, thereby performing better sealing on the exhaust port.
In some embodiments, the adjusting member 500 is a rod-shaped body penetrating the valve seat 100 and is in threaded connection with the valve seat 100, wherein the adjusting portion 510 is a section of the adjusting member 500 and is located in the accommodating cavity 110 so as to be capable of abutting against the back surface of the pressing member 400, and the operating portion 520 is another section of the adjusting member 500 and is located outside the valve seat 100 so as to facilitate the operator to rotate the adjusting member 500.
It should be noted that the battery explosion-proof valve is assembled by the sealing ring 220, the sealing member 200, the guide member 210, the coil spring 310, the pressing member 400, and the valve seat 100, and has a simple structure and is convenient to assemble.
The battery explosion-proof valve has the following specific use principle: when the battery is used for explosion protection, an operator rotates the operation part 520, the adjusting part 510 moves towards the exhaust port, the adjusting part 510 pushes the pressing piece 400 to move towards the sealing piece 200, so that the spiral spring 310 is compressed, the sealing piece 200 abuts against the position of the exhaust port, the elastic force of the spiral spring 310 to the sealing piece 200 is further improved, and the battery explosion-proof valve is matched with a corresponding battery pack; on the contrary, when the operator rotates the operating part 520, the adjusting part 500 moves to the outside of the valve seat 100, that is, the adjusting part 510 moves away from the exhaust port, the pressing part 400 moves to the bottom of the accommodating chamber 110 under the action of the coil spring 310, and the coil spring 310 extends, so that the elastic force of the coil spring 310 on the sealing member 200 is reduced, and the explosion-proof valve is adapted to the corresponding battery pack.
In order to enable the sealing member 200 to seal the exhaust port, in some embodiments, a mounting seat (not shown) is sealably connected to the exhaust port, the mounting seat defines an exhaust hole for exhausting gas in the battery box, and the sealing member 200 abuts against the port of the exhaust hole, so that the exhaust port is sealed better; as for the sealing member 200, it may be provided separately from the valve seat 100, or may be fixedly coupled together.
According to the utility model discloses a lithium ion power battery package, the battery includes foretell battery explosion-proof valve, and is concrete, and the battery package is through adopting above-mentioned battery explosion-proof valve, and operator's accessible adjusts operation portion 520 to the position of control regulation portion 510 in disk seat 100, and then the compression capacity of control elastic component 300. In this way, the sealing member 200 is adjusted by the elastic force of the elastic member 300, so that the battery explosion-proof valve is adapted to battery packs of different parameters.
According to the utility model discloses an electric automobile, including foretell electric automobile. The electric equipment adopts a lithium ion power battery pack, the lithium ion power battery pack adopts the battery explosion-proof valve, and the pressing force of the sealing element 200 of the battery explosion-proof valve on the battery pack is adjusted, so that the battery explosion-proof valve is adaptive to different battery packs, and the battery packs are adaptive to different electric automobiles.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.
Claims (10)
1. Battery explosion-proof valve for the gas vent of battery box, its characterized in that includes:
a valve seat connectable to a housing of the battery case;
a sealing member disposed in the valve seat and capable of abutting against the exhaust port;
an adjusting member including an operating portion extending out of the valve seat and an adjusting portion extending inside the valve seat, the adjusting portion being adapted to be moved inside the valve seat by operation of the operating portion;
one end of the elastic piece is connected with the sealing piece so that the sealing piece can be pressed on the exhaust port, and the other end of the elastic piece is connected with the adjusting part; the elastic force applied to the sealing member by the elastic member is adapted to be adjusted by a moving distance of the adjusting portion within the valve seat.
2. The battery explosion prevention valve of claim 1 further comprising a guide member connected to said seal member and slidably connected to said valve seat.
3. The battery explosion prevention valve as defined in claim 2 wherein the valve seat is provided with a guide sleeve defining therein a guide hole in sliding connection with the guide member.
4. The battery explosion prevention valve as recited in claim 2, wherein the elastic member is a coil spring and is fitted over the guide member.
5. The battery explosion-proof valve of claim 4, further comprising a pressing member, wherein the adjusting portion is connected to a back surface of the pressing member, one end of the coil spring abuts against a back surface of the sealing member, and the other end abuts against a front surface of the pressing member.
6. The battery explosion prevention valve as recited in claim 5, wherein the pressing member is provided with a positioning hole through which the guide member passes.
7. The battery explosion prevention valve as defined in claim 5 wherein the coil spring has a plurality of positions where the plurality of coil springs abut against the back surface of the sealing member.
8. The battery explosion prevention valve as defined in claim 1 wherein the adjustment member is threadedly attached to the valve seat and disposed in abutment with the resilient member.
9. A lithium ion power battery pack, characterized by comprising the battery explosion-proof valve according to any one of claims 1 to 8.
10. An electric vehicle comprising the lithium-ion power battery pack according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120417096.7U CN214625294U (en) | 2021-02-25 | 2021-02-25 | Battery explosion-proof valve, lithium ion power battery pack and electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120417096.7U CN214625294U (en) | 2021-02-25 | 2021-02-25 | Battery explosion-proof valve, lithium ion power battery pack and electric automobile |
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| Publication Number | Publication Date |
|---|---|
| CN214625294U true CN214625294U (en) | 2021-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120417096.7U Active CN214625294U (en) | 2021-02-25 | 2021-02-25 | Battery explosion-proof valve, lithium ion power battery pack and electric automobile |
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| CN (1) | CN214625294U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115234694A (en) * | 2022-09-22 | 2022-10-25 | 江苏时代新能源科技有限公司 | Explosion-proof valve plugging device |
-
2021
- 2021-02-25 CN CN202120417096.7U patent/CN214625294U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115234694A (en) * | 2022-09-22 | 2022-10-25 | 江苏时代新能源科技有限公司 | Explosion-proof valve plugging device |
| CN115234694B (en) * | 2022-09-22 | 2022-12-23 | 江苏时代新能源科技有限公司 | Explosion-proof valve plugging device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 518000 1-2 Floor, Building A, Xinwangda Industrial Park, No. 18 Tangjianan Road, Gongming Street, Guangming New District, Shenzhen City, Guangdong Province Patentee after: Xinwangda Power Technology Co.,Ltd. Address before: 518000 Xinwangda Industrial Park, No.18, Tangjia south, Gongming street, Guangming New District, Shenzhen City, Guangdong Province Patentee before: SUNWODA ELECTRIC VEHICLE BATTERY Co.,Ltd. |
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| CP03 | Change of name, title or address |