CN212848599U - Power battery structure - Google Patents
Power battery structure Download PDFInfo
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- CN212848599U CN212848599U CN202021599730.5U CN202021599730U CN212848599U CN 212848599 U CN212848599 U CN 212848599U CN 202021599730 U CN202021599730 U CN 202021599730U CN 212848599 U CN212848599 U CN 212848599U
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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
Abstract
The utility model belongs to the technical field of battery production and manufacture, in particular to a power battery structure, which comprises a shell (1), wherein two sides of the shell (1) are conducted, and the top and/or the bottom of the shell (1) are provided with a plurality of explosion-proof valves (4); the side cover (3), the side cover (3) set up the lateral part of casing (1), and install a plurality of utmost point post (5). The utility model discloses a position of adjustment utmost point post and explosion-proof valve avoids the impaired or roast condition of burning of pencil on the battery, reduces the influence of electric core thermal runaway to the battery, helps improving the security of battery.
Description
Technical Field
The utility model belongs to the technical field of the battery production is made, concretely relates to power battery structure.
Background
Nowadays, green and efficient power batteries are vigorously developed in various countries. The lithium ion battery as a novel power battery has the advantages of large energy density and power density, high working voltage, light weight, small volume, long cycle life, good safety, environmental protection and the like, and has wide application prospect in the aspects of portable electric appliances, electric tools, large-scale energy storage, electric traffic power supplies and the like. In order to increase the cell energy density, square cells have received extensive attention. Square electric core has great advantage in energy density, but present battery utmost point post and explosion-proof valve generally all design at the top of battery, and utmost point post and explosion-proof valve setting are provided with the insulating part at the top cap of battery between utmost point post and the top cap at the top cap of battery, are provided with the explosion-proof hole that matches with explosion-proof valve on the top cap, and the explosion-proof hole sets up between two utmost point posts.
However, the inventor finds that the existing scheme has at least the following defects: because utmost point post and explosion-proof valve generally all design in same one side, the pencil such as voltage, temperature of the top of utmost point post is more, and when electric core took place the thermal runaway, flame spouts to the top of utmost point post, easily causes the battery to go up the pencil and impairs or the phenomenon of burning by fire, has great influence to the security of battery.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: the power battery structure is provided aiming at the defects of the prior art, the positions of the pole columns and the explosion-proof valve are adjusted, the condition that the wiring harness on the battery is damaged or baked is avoided, the influence of thermal runaway of the battery core on the battery is reduced, and the safety of the battery is improved.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a power cell structure comprising: the explosion-proof valve comprises a shell, a valve body and a valve body, wherein two sides of the shell are communicated, and a plurality of explosion-proof valves are arranged at the top and/or the bottom of the shell; the side cover, the side cover sets up the lateral part of casing, and install a plurality of utmost point post.
As an improvement of a power battery structure, casing top and/or bottom are provided with the explosion-proof through-hole of a plurality of, a plurality of explosion-proof valve install in explosion-proof through-hole.
As an improvement of the power battery structure, a plurality of is installed to the bottom of casing explosion-proof valve.
As an improvement of a power battery structure, the top of casing is provided with the opening, the top cap, a plurality of are installed to the opening explosion-proof valve install in the top cap.
As an improvement of the power battery structure of the present invention, two of the side covers are fixed to the opposite sides of the casing.
As an improvement of a power battery structure, at least one the side cap installation the explosion-proof valve, or at least one the side cap installation utmost point post.
As an improvement of the power battery structure, the distance between the two adjacent explosion-proof valves is 100 mm-1000 mm.
As an improvement of a power battery structure, adjacent two the interval of explosion-proof valve is 400 mm.
As an improvement of the power battery structure, the explosion-proof valve and the shape of the pole are circular, oval or polygonal.
As an improvement of the power battery structure of the utility model, the explosion-proof valves are arranged at the top of the shell and are 1 to 6 in number.
As an improvement of the power battery structure of the utility model, the explosion-proof valve is 3 at the top of the shell.
As an improvement of a power battery structure, be located the centre explosion-proof pressure of explosion-proof valve is less than adjacent two the explosion-proof pressure of explosion-proof valve.
The utility model has the advantages that the utility model comprises a shell, two sides of the shell are conducted, and a plurality of explosion-proof valves are arranged at the top and/or the bottom of the shell; the side cover, the side cover sets up the lateral part of casing, and install a plurality of utmost point post. Because utmost point post and explosion-proof valve generally all design in same one side, the voltage of the top of utmost point post, pencil such as temperature is more, when electric core takes place the thermal runaway, flame spouts to the top of utmost point post, easily cause the impaired or roast phenomenon of burning of pencil on the battery, there is great influence to the security of battery, therefore, establish utmost point post at the side cap, explosion-proof valve establishes the top at the casing, through setting up utmost point post at the side cap, adjust the position of explosion-proof valve and utmost point post, make explosion-proof valve and utmost point post install the not equidirectional at the casing, namely, the side cap on the casing lateral part only has utmost point post, there is no explosion-proof valve, benefit from the side cap and do not have other part occupation space, mountable voltage, pencil such as temperature, not only avoid the pencil to stride across the condition of explosion-proof valve, still avoid high hot air of explosion-proof valve to spout to. The utility model discloses a position of adjustment utmost point post and explosion-proof valve avoids the impaired or roast condition of burning of pencil on the battery, reduces the influence of electric core thermal runaway to the battery, helps improving the security of battery.
Drawings
Features, advantages and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is an exploded view of a first embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a fourth embodiment of the present invention.
Fig. 4 is an exploded schematic view of a fourth embodiment of the present invention.
Fig. 5 is an exploded schematic view of a fifth embodiment of the present invention.
Fig. 6 is an exploded schematic view of a sixth embodiment of the present invention.
Wherein the reference numerals are as follows:
1-a shell;
2-explosion-proof through holes;
3-side cover;
4-an explosion-proof valve;
5-pole column;
6-top cover.
Detailed Description
As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", horizontal "and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, detachable connections, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The present invention will be described in further detail with reference to fig. 1 to 6, but the present invention is not limited thereto.
Implementation mode one
A power cell structure comprising: the explosion-proof device comprises a shell 1, wherein two sides of the shell 1 are communicated, and a plurality of explosion-proof valves 4 are arranged at the top or the bottom of the shell 1; the side cover 3, the side cover 3 sets up the lateral part at casing 1, and installs a plurality of utmost point post 5. Because the pole and the explosion-proof valve are generally designed on the same side, and the voltage, temperature and other wire harnesses above the pole are more, when the battery core is out of control due to heat, flame is sprayed to the upper part of the pole, which easily causes the phenomenon of damage or burning of the wire harness on the battery, and has a great influence on the safety of the battery, as shown in fig. 1-2, the pole 5 is arranged on the side cover 3, the explosion-proof valve 4 is arranged on the top of the shell 1, the pole 5 is arranged on the side cover 3, and the positions of the explosion-proof valve 4 and the pole 5 are adjusted, so that the explosion-proof valve 4 and the pole 5 are arranged in different directions of the shell 1, namely, the side cover 3 on the side part of the shell 1 only has one pole 5 without the explosion-proof valve 4, and the wire harnesses such as voltage, temperature and the like can be installed without occupying space of other parts by the side cover 3, thereby not only avoiding the condition that the wire harness needs, thereby improving the safety of the battery; wherein, casing 1 formula structure as an organic whole can reserve the position of explosion-proof through-hole 2 before casing 1 shaping, also can form explosion-proof through-hole 2 through modes such as drilling processing or milling process after casing 1 shaping, then installs explosion-proof valve 4 in explosion-proof through-hole 2, compares current top cap explosion-proof valve assembly structure, has saved installation top cover piece, helps simplifying production processes, improves production efficiency.
Because when thermal runaway appears in power battery, high-temperature gas diffuses along the vertical direction, and a plurality of explosion-proof valves 4 are installed at the top or the bottom of the shell 1, so that the gas generated in the battery can directly reach the external environment along the vertical direction after being discharged from the explosion-proof valves 4, the flowing speed of the air at the top of the shell 1 is high, the gas discharge efficiency is greatly improved, the rapid and smooth pressure discharge is realized, and the safety of the battery is further ensured
Specifically, the casing 1 is an integrated structure and comprises four substrates which are sequentially connected, the four substrates enclose a structure with two sides communicated, openings are formed in two sides of the casing 1, the two side covers 3 are respectively fixed on the two openings to form a sealed cavity, the battery core is accommodated in the sealed cavity, the side covers 3 can be structures which are formed by metal materials and have certain strength, the side covers 3 can be formed by a plurality of parts in a split mode, and then the parts are connected into a whole in a welding mode or an integrated forming mode; after the winding core is mounted to the shell 1 with two sides conducting, the side cover 3 and the shell 1 can be connected together in a welding mode and the like, and the power battery external structure with higher safety and better sealing effect is formed.
In the utility model discloses an in the power battery structure, still include electric core, electric core holding is in casing 1, electric core accessible piles up or convolutes first pole piece, second pole piece and the diaphragm that is located between first pole piece and the second pole piece together and form and fold the core or roll up the core, wherein, the diaphragm is the insulator between first pole piece and second pole piece, the whole structure of flat column that is of book core of this embodiment, and likewise, in other embodiments, first pole piece still can be the negative pole piece, and the second pole piece is the positive pole piece, and in addition, positive pole piece active material is coated on the coating district of positive pole piece, and negative pole piece active material is coated on the coating district of negative pole piece. The uncoated area that extends from the coating area of rolling up the core then is as utmost point ear, and electric core includes two utmost point ears, anodal ear and negative pole ear promptly, and anodal ear extends from the coating area of positive plate, and the negative pole ear extends from the coating area of negative plate. Two utmost point ears correspond the lateral part from rolling up a core and 1 both sides of casing respectively and extend, and every terminal surface that rolls up a core extends a utmost point ear, and two terminal surfaces and two utmost point ears that roll up a core all set up towards the casing, roll up the core and have wide face and the narrow face that sets up in turn, optionally, the opening of the narrow face of rolling up a core towards the both sides of casing 1, the wide face of rolling up a core towards the big face of casing 1, the big face of casing 1 can paste tightly with other electric cores, forms the battery module.
When the battery is out of control due to heat, generated gas can directly reach the position of the explosion-proof hole after escaping from the interlayer gap of the wound pole piece, so that the gas discharge path is greatly shortened, and the gas discharge efficiency is improved.
According to the utility model discloses an among the power battery structure, it is shown with reference to fig. 1 ~ 2, casing 1 top or bottom are provided with the explosion-proof through-hole 2 of a plurality of, and a plurality of explosion-proof valve 4 is installed in explosion-proof through-hole 2. Casing 1 formula structure as an organic whole, can be before casing 1 shaping, reserve the position of explosion-proof through-hole 2, also can form explosion-proof through-hole 2 through modes such as drilling processing or milling process after casing 1 shaping, then install explosion-proof valve 4 in explosion-proof through-hole 2, compare current top cap explosion-proof valve assembly structure, the installation top cover piece has been saved, help simplifying production processes, and the production efficiency is improved, the shape and the size of a dimension of explosion-proof through-hole 2, can be confirmed according to the shape of actual explosion-proof valve 4.
In the power battery structure according to the utility model, as shown in fig. 1-2, two side covers 3 are fixed on the opposite sides of the casing 1, and one terminal post 5 is installed on each of the two side covers 3. After the winding core is mounted on the shell 1 with two sides conducting, the two side covers 3 and the shell 1 can be connected together in a welding mode and the like, and the power battery external structure with higher safety and better sealing effect is formed. Wherein, two side covers 3 all are provided with utmost point post 5 and connect the adaptor of utmost point post 5 and utmost point ear. One pole 5 is connected to a corresponding pole lug via an adapter. The adaptor comprises a connecting part fixedly connected with the pole 5 and a welding part connected with the pole lug, the connecting part is connected with the pole 5, and the welding part is at least partially positioned between the end surface of the winding core and the shell 1 and welded with the pole lug. The number of the poles 5 on the side cover 3 can be adjusted according to the structure of the actual battery, for example, one side cover 3 is provided with one or two poles 5.
According to the utility model discloses an among the power battery structure, the interval of two adjacent explosion-proof valves 4 is 400mm, guarantees that casing 1's top has sufficient structural strength, helps prolonging casing 1's life.
In the power battery structure according to the utility model discloses, the shape of explosion-proof valve 4 and utmost point post 5 is circular. According to market demand and battery actual structure, can be circular explosion-proof valve 4 and utmost point post 5's shape design, nevertheless the utility model discloses not so limit, explosion-proof valve 4 and utmost point post 5's shape can be the same, also can inequality, satisfies explosion-proof valve 4 and utmost point post 5 match the battery structure can.
In the power battery structure according to the utility model, as shown in fig. 1-2, the number of the explosion-proof valves 4 on the top of the housing 1 is 3. In order to further reduce the risk of explosion of power battery when thermal runaway appears, inject the quantity of explosion-proof valve 4 and be 3, prevent to lead to when thermal runaway appears in power battery because of single explosion-proof valve 4 breaks down, gaseous can not in time discharge and cause the battery explosion, prevent simultaneously to reduce the structural strength at the top of casing 1 because of seting up explosion-proof through-hole 2 too much.
In the power battery structure according to the utility model, as shown in fig. 1-2, the explosion-proof pressure of the middle explosion-proof valve 4 is less than the explosion-proof pressure of the two adjacent explosion-proof valves 4. When the middle explosion-proof valve 4 is not enough for pressure relief, the explosion-proof valves 4 on two sides are started and quickly decompressed due to the fact that the explosion-proof pressure of the two adjacent explosion-proof valves 4 is large, and the situation that gas cannot be timely discharged to cause battery explosion is avoided.
The utility model discloses a theory of operation is:
establish utmost point post 5 at side cap 3, explosion-proof valve 4 establishes the top at casing 1, through set up utmost point post 5 at side cap 3, adjust explosion-proof valve 4 and utmost point post 5's position, make explosion-proof valve 4 and utmost point post 5 install the not equidirectional at casing 1, namely, side cap 3 on the casing 1 lateral part only has utmost point post 5, do not have explosion-proof valve 4, benefit from side cap 3 not have other part occupation space, mountable voltage, pencil such as temperature, not only avoid the pencil to need to stride the condition of explosion-proof valve 4, still avoid explosion-proof valve 4's high fever air jet to the pencil, reduce the impaired or the condition of burning of pencil, thereby improve the security of battery.
Second embodiment
The difference from the first embodiment is that: the number of the explosion-proof valves 4 positioned at the top of the shell 1 is 1, the distance between two adjacent explosion-proof valves 4 is 100mm, and the shapes of the explosion-proof valves 4 and the pole 5 are both elliptical. The number of the explosion-proof valves 4 is limited to be the minimum value, so that the battery explosion caused by the fact that gas cannot be discharged in time when the thermal runaway of the power battery occurs due to the fact that a single explosion-proof valve 4 breaks down is prevented; the distance between two adjacent explosion-proof valves 4 is limited to be the minimum value, so that the situation that the distance between two adjacent explosion-proof valves 4 is too small, the distance between the explosion-proof through holes 2 is too small, and the mechanical strength of the shell 1 is reduced is prevented; according to market demand and battery actual structure, can be oval to the shape design of explosion-proof valve 4 and utmost point post 5, nevertheless the utility model discloses not so limit, explosion-proof valve 4 and utmost point post 5's shape can be the same, also can inequality, satisfies explosion-proof valve 4 and utmost point post 5 match the battery structure can.
Other structures are the same as those of the first embodiment, and are not described herein again.
Third embodiment
The difference from the first embodiment is that: the number of the explosion-proof valves 4 positioned at the top of the shell 1 is 6, the distance between two adjacent explosion-proof valves 4 is 1000mmmm, and the shapes of the explosion-proof valves 4 and the pole 5 are polygons. Limiting the number of the explosion-proof valves 4 to a maximum value prevents an excessive number of the explosion-proof valves 4, resulting in an increase in the cost of producing the battery; the distance between two adjacent explosion-proof valves 4 is limited to be the maximum value, so that the situation that the explosion-proof valves 4 are sparsely arranged and the pressure relief effect is reduced due to the fact that the distance between two adjacent explosion-proof valves 4 is too large is prevented; according to market demand and battery actual structure, can be the shape design of explosion-proof valve 4 and utmost point post 5 for the polygon, like triangle-shaped, pentagon, nevertheless the utility model discloses do not so limit, explosion-proof valve 4 and utmost point post 5's shape can be the same, also can inequality, satisfy explosion-proof valve 4 and utmost point post 5 match the battery structure can.
Other structures are the same as those of the first embodiment, and are not described herein again.
Embodiment IV
The difference from the first embodiment is that: in the present embodiment, one side cover 3 is provided with a pole 5, and the other side cover 3 is provided with an explosion-proof valve 4. Referring to fig. 3-4, the structure can increase the number of the explosion-proof valves 4, realize rapid and smooth pressure discharge, and can prevent the wire harness on the other side from being baked when the explosion-proof valves are opened and high-heat energy air is sprayed to the top surface and one side surface of the battery module, so that the fire and explosion of the whole battery pack can be effectively avoided, and in addition, the pole 5 is installed on the other side cover 3, and the normal use of the battery can be ensured.
Other structures are the same as those of the first embodiment, and are not described herein again.
Fifth embodiment
The difference from the first embodiment is that: the housing 1 of the present embodiment is provided with a plurality of explosion-proof valves 4 at both the top and bottom thereof. Referring to fig. 5, in order to further reduce the risk of explosion of the power battery when thermal runaway occurs, a plurality of explosion-proof valves 4 may be installed at the bottom of the housing 1, so that when the internal pressure of the battery suddenly rises due to overcharge, short circuit, extrusion, needling or other severe conditions of the battery, rapid and smooth pressure discharge can be realized, and the safety of the battery can be further ensured.
Other structures are the same as those of the first embodiment, and are not described herein again.
Sixth embodiment
The difference from the first embodiment is that: the top of the housing 1 of the present embodiment is provided with an opening, a top cover 6 is attached to the opening, and the plurality of explosion-proof valves 4 are attached to the top cover 6. As shown in fig. 6, since the plurality of anti-explosion valves 4 are mounted on the top cover 6, when the positions of the anti-explosion valves 4 are adjusted, only the corresponding top cover 6 needs to be replaced, so that the replacement of the whole housing 1 is omitted, and the maintenance cost of the battery is reduced; the explosion-proof through hole 2 arranged on the top cover 6 can be formed by drilling, milling or the like, and the shape and the size of the explosion-proof through hole 2 can be determined according to actual conditions; because the top of casing 1 is provided with the opening, casing 1 also can be "U" type column structure, and casing 1 can be bent by the punching press by the aluminium alloy and form, and the fixed connection can be realized to the mode that welds between top cap 6 and the casing 1.
Other structures are the same as those of the first embodiment, and are not described herein again.
Variations and modifications to the above-described embodiments may become apparent to those skilled in the art from the disclosure and teachings of the above description. Therefore, the present invention is not limited to the above-mentioned embodiments, and any obvious modifications, replacements or variations made by those skilled in the art on the basis of the present invention belong to the protection scope of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. A power cell structure, comprising:
the explosion-proof valve comprises a shell (1), wherein two sides of the shell (1) are communicated, and a plurality of explosion-proof valves (4) are arranged at the top and/or the bottom of the shell (1);
the side cover (3), the side cover (3) set up the lateral part of casing (1), and install a plurality of utmost point post (5).
2. A power cell structure according to claim 1, wherein: the explosion-proof valve is characterized in that a plurality of explosion-proof through holes (2) are formed in the top and/or the bottom of the shell (1), and a plurality of explosion-proof valves (4) are installed in the explosion-proof through holes (2).
3. A power cell structure according to claim 1, wherein: the top of casing (1) is provided with the opening, top cap (6) are installed to the opening, a plurality of explosion-proof valve (4) install in top cap (6).
4. A power cell structure according to claim 1, wherein: the two side covers (3) are fixed on two opposite sides of the shell (1).
5. A power cell structure according to claim 4, wherein: at least one side cover (3) is provided with the explosion-proof valve (4), or at least one side cover (3) is provided with the pole (5).
6. A power cell structure according to claim 1, wherein: the distance between two adjacent explosion-proof valves (4) is 100-1000 mm.
7. A power cell structure according to claim 6, wherein: the distance between two adjacent explosion-proof valves (4) is 400 mm.
8. A power cell structure according to claim 1, wherein: the number of the explosion-proof valves (4) positioned at the top of the shell (1) is 1-6.
9. A power cell structure according to claim 8, wherein: the number of the explosion-proof valves (4) positioned at the top of the shell (1) is 3.
10. A power cell structure according to claim 9, wherein: the explosion-proof pressure of the middle explosion-proof valve (4) is smaller than the explosion-proof pressure of the two adjacent explosion-proof valves (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021599730.5U CN212848599U (en) | 2020-08-05 | 2020-08-05 | Power battery structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021599730.5U CN212848599U (en) | 2020-08-05 | 2020-08-05 | Power battery structure |
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| CN212848599U true CN212848599U (en) | 2021-03-30 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114397100A (en) * | 2021-12-29 | 2022-04-26 | 东软睿驰汽车技术（沈阳）有限公司 | Method and device for determining installation number of explosion-proof valves |
| WO2023066260A1 (en) * | 2021-10-18 | 2023-04-27 | 重庆三峡时代能源科技有限公司 | Battery housing and square-housing battery |
| WO2023078027A1 (en) * | 2021-11-04 | 2023-05-11 | Mercedes-Benz Group AG | Explosion-proof valve for power battery and power battery |
| WO2024087101A1 (en) * | 2022-10-27 | 2024-05-02 | 宁德时代新能源科技股份有限公司 | Battery and electrical device |
-
2020
- 2020-08-05 CN CN202021599730.5U patent/CN212848599U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023066260A1 (en) * | 2021-10-18 | 2023-04-27 | 重庆三峡时代能源科技有限公司 | Battery housing and square-housing battery |
| WO2023078027A1 (en) * | 2021-11-04 | 2023-05-11 | Mercedes-Benz Group AG | Explosion-proof valve for power battery and power battery |
| CN114397100A (en) * | 2021-12-29 | 2022-04-26 | 东软睿驰汽车技术（沈阳）有限公司 | Method and device for determining installation number of explosion-proof valves |
| WO2024087101A1 (en) * | 2022-10-27 | 2024-05-02 | 宁德时代新能源科技股份有限公司 | Battery and electrical device |
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Effective date of registration: 20220119 Address after: 215500 room 808, No. 1, Southeast Avenue, Changshu high tech Industrial Development Zone, Changshu, Suzhou, Jiangsu Patentee after: Jiangsu Zhengli new energy battery technology Co.,Ltd. Address before: 211100 Lantian Road 249, Airport Economic Development Zone, Jiangning District, Nanjing City, Jiangsu Province Patentee before: JIANGSU TAFEL NEW ENERGY TECHNOLOGY Co.,Ltd. Patentee before: DONGGUAN TAFEL NEW ENERGY TECHNOLOGY Co.,Ltd. Patentee before: SHENZHEN TAFEL NEW ENERGY TECHNOLOGY Co.,Ltd. |