CN211045494U - Battery top cap insulation system - Google Patents
Battery top cap insulation system Download PDFInfo
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- CN211045494U CN211045494U CN201921726271.XU CN201921726271U CN211045494U CN 211045494 U CN211045494 U CN 211045494U CN 201921726271 U CN201921726271 U CN 201921726271U CN 211045494 U CN211045494 U CN 211045494U
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- utmost point
- point post
- battery
- top cover
- top cap
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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 the battery production is made, concretely relates to battery top cap insulation system, including first utmost point post (1), second utmost point post (2), top cap piece (3) and insulating plastic (4), first utmost point post (1) with second utmost point post (2) pass through respectively insulating plastic (4) install in top cap piece (3). The utility model discloses can prevent outside short circuit to produce the heavy current, improve the insulating properties of top cap to improve the security performance of battery.
Description
Technical Field
The utility model belongs to the technical field of the battery production is made, concretely relates to battery top cap insulation system.
Background
Nowadays, with the development of modern society and the enhancement of environmental awareness of people, more and more devices select a lithium battery as a power supply, such as a mobile phone, a notebook computer, an electric tool, an electric automobile and the like, which provides a wide space for the application and development of the lithium battery. Among them, lithium batteries used in electric tools, electric vehicles, and the like are generally called power batteries.
The assembly structure of the resistance block is arranged between the top cover and the pole column and is widely used in the design of the top cover of the power battery all the time, under the normal condition, the anode pole column is electrically connected with the top cover plate through the resistance block, and the resistance value of the resistance block is in the milliohm level, so that the electric potentials of the aluminum shell and the anode pole column are ensured, and large current is not generated. However, the inventors have found that this solution has at least the following drawbacks: firstly, due to poor insulating property between the pole and the top cover, when an external part and a shell cause short circuit, if the current between the poles is not cut off in time, the safety performance of the battery cell is reduced, and even the battery cell is scrapped; secondly, the stability of assembly between top cap and the utmost point post is relatively poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: to prior art's not enough, provide a battery top cap insulation system, can prevent that outside short circuit from producing the heavy current, improve the insulating properties of top cap to improve the security performance of battery.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a battery top cap insulation system, includes first utmost point post, second utmost point post, top cap piece and insulating plastic, first utmost point post with the second utmost point post passes through respectively insulating plastic install in the top cap piece.
As an improvement of a battery top cap insulation system, insulating plastic includes the body and sets up the inboard convex part of body, the outside of first utmost point post with the outside of second utmost point post all be provided with convex part complex concave part.
As an improvement of battery top cap insulation system, insulating plastic is by PPS material, PSU material, PC material, PFA material, PBT material, PA material, nano-material or PP material integrated into one piece structure.
As an improvement of battery top cap insulation system, the top cap piece is provided with utmost point post through-hole, insulating plastic is provided with a plurality of connecting portion, utmost point post through-hole be provided with the unsmooth complex joint portion of connecting portion, joint portion is used for preventing insulating plastic takes place to rotate.
As an improvement of battery top cap insulation system, the top of utmost point post through-hole is formed with first recess, joint portion centers on first recess sets up, the position of connecting portion with the position of joint portion corresponds.
As an improvement of a battery top cap insulation system, first utmost point post include first bottom plate and set up in the first cylinder of first bottom plate, the second utmost point post include the second bottom plate and set up in the second cylinder of second bottom plate, first bottom plate with first cylinder passes through friction weld or butt fusion formation compound utmost point post, the second bottom plate with the second cylinder is the integrated into one piece structure.
As an improvement of the battery top cap insulation structure, the cross-section of the first cylinder and the cross-section of the second cylinder are square, circular or oval.
As an improvement of a battery top cap insulation system, first cylinder with the top of second cylinder all is provided with the step, first cylinder with the bottom of second cylinder all is provided with protruding edge.
As an improvement of the battery top cap insulation structure, the height of the step is equal to the height of the convex edge.
As an improvement of battery top cap insulation system, first utmost point post with second utmost point post all overlaps and is equipped with the sealing washer, plastic under the bottom of top cap piece is installed, the top of utmost point post through-hole is formed with the second recess, the second recess is used for the embedding the sealing washer with plastic down.
As a battery top cap insulation system's an improvement, still be provided with explosion-proof valve bleeder vent on the top cap piece and annotate at least one in the liquid hole, correspond on the plastic down and be provided with explosion-proof valve accepting hole and annotate at least one in the liquid through-hole, explosion-proof valve bleeder vent with install explosion-proof valve between the explosion-proof valve accepting hole, the protection film is installed at explosion-proof valve bleeder vent top.
The beneficial effects of the utility model reside in that, the utility model discloses a first utmost point post, second utmost point post, top cap piece and insulating plastic, first utmost point post with the second utmost point post passes through respectively insulating plastic install in the top cap piece. Because the insulating property between the pole and the top cover is poor, when an external part and the shell cause short circuit, if the current between the pole is not cut off in time, the safety performance of the battery core is reduced, even the battery core is scrapped, in the prior art, the top cover is electrically connected with the positive pole through generally installing a resistance block between the top cover and the pole or manufacturing insulating plastic on the positive pole by using a conductive material, the connection between the positive pole and the negative pole can be realized when the internal fault of the battery occurs, namely an internal protection loop is formed to prevent the battery from exploding, but a certain voltage exists between the top cover and the shell, the external part is easy to cause short circuit with the shell, therefore, the first pole is installed on the top cover plate through the insulating plastic, the first pole is insulated from the top cover plate, the second pole is installed on the top cover plate through the insulating plastic, the second pole is insulated from the top cover plate, and the insulating plastic on the first pole and, when the external short circuit occurs to the battery, the insulating plastic can isolate the top cover plate, so that the probability of the external short circuit of the battery is reduced, the probability of the circuit current damaging the battery cell is reduced, and the safety performance of the battery is improved; simultaneously, saved the insulating plastic on additionally making the positive post with conducting material, help improving the production efficiency of insulating plastic, still do benefit to the insulating plastic of mass production, reduce insulating plastic manufacturing cost, in addition, after first utmost point post is fixed in utmost point post through-hole, adopt injection molding process, and through the mould, make between first utmost point post and the top cap piece, form insulating plastic between second utmost point post and the top cap piece, insulating plastic plays the effect of fastening first utmost point post and second utmost point post, improve the steadiness between utmost point post and the top cap, prevent that utmost point post from taking place to drop. The utility model discloses can prevent outside short circuit to produce the heavy current, improve the insulating properties of top cap to improve the security performance of battery.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an exploded view of the present invention.
Fig. 3 is a schematic cross-sectional view of the assembled first pole and the top cover plate of the present invention.
Fig. 4 is a schematic cross-sectional view of the second pole and the top cover plate of the present invention after assembly.
Fig. 5 is a schematic cross-sectional view of the first and second grooves of the present invention.
Wherein: 1-a first pole; 2-a second pole; 3-top cover sheet; 4-insulating plastic; 11-a first base plate; 12-a first cylinder; 21-a second bottom plate; 22-a second column; 31-pole through hole; 32-explosion-proof valve air holes; 33-liquid injection hole; 310-a snap-in part; 311-a first groove; 312 — a second groove; 40-a connecting part; 41-body; 42-a convex portion; 5-a recess; 6-step; 7-convex edge; 8-sealing ring; 9-discharging plastic; 91-explosion-proof valve accommodating hole; 92-liquid injection through holes; 10-an explosion-proof valve; 20-protective film.
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 the accompanying drawings, which are not intended to limit the present invention.
As shown in fig. 1-5, a battery top cover insulation structure comprises a first pole column 1, a second pole column 2, a top cover plate 3 and insulation plastic 4, wherein the first pole column 1 and the second pole column 2 are respectively installed on the top cover plate 3 through the insulation plastic 4. Because the insulating property between the pole and the top cover is poor, when an external part and the shell cause short circuit, if the current between the poles is not cut off in time, the safety performance of the battery core is reduced and even scrapped, in the prior art, the top cover is electrically connected with the positive pole by generally installing a resistance block between the top cover and the pole or manufacturing the insulating plastic 4 on the positive pole by using a conductive material, so that the connection between the positive pole and the negative pole can be realized when the internal fault of the battery occurs, namely an internal protection loop is formed to prevent the battery from exploding, but a certain voltage exists between the top cover and the shell, the external part easily causes short circuit with the shell, therefore, the first pole 1 is installed on the top cover plate 3 by the insulating plastic 4, the first pole 1 is insulated from the top cover plate 3, the second pole 2 is installed on the top cover plate 3 by the insulating plastic 4, so that the second pole 2 is, because the insulating plastic 4 on the first pole 1 and the second pole 2 can play an insulating role, when the battery is in external short circuit, the insulating plastic 4 can isolate the top cover plate 3, so that the probability of the battery in external short circuit is reduced, the probability of the circuit current damaging the battery core is reduced, and the safety performance of the battery is improved; simultaneously, saved additionally and made insulating plastic 4 on the positive post with conducting material, help improving insulating plastic 4's production efficiency, still do benefit to insulating plastic 4 of mass production, reduce insulating plastic 4 manufacturing cost, in addition, after first utmost point post 1 is fixed in utmost point post through-hole 31, adopt injection molding process, and through the mould, make between first utmost point post 1 and the top cap piece 3, form insulating plastic 4 between second utmost point post 2 and the top cap piece 3, insulating plastic 4 plays the effect of fastening first utmost point post 1 and second utmost point post 2, improve the steadiness between utmost point post and the top cap, prevent that utmost point post from taking place to drop.
Preferably, the insulating plastic 4 includes a body 41 and a protrusion 42 disposed inside the body 41, and the outer side of the first pole 1 and the outer side of the second pole 2 are both provided with a recess 5 engaged with the protrusion 42. The outside of first utmost point post 1 and the outside of second utmost point post 2 all are provided with concave part 5 for the pulling force of the direction about the insulating plastic 4 of fastening realizes the insulation of utmost point post, and wherein convex part 42 and the unsmooth cooperation of concave part 5 make the outside that insulating plastic 4 can the cladding first utmost point post 1 and the outside of second utmost point post 2, help improving the insulating properties between utmost point post and the top cap, reduce the probability that return circuit electric current damaged electric core.
Preferably, the insulating plastic 4 is an integrally molded structure made of PPS material, PSU material, PC material, PFA material, PBT material, PA material, nano material or PP material. The PS material, the PSU material, the PC material, the PFA material, the PBT material, the PA material, the nano material and the PP material have high temperature resistance, corrosion resistance and excellent mechanical property and insulating property, and are beneficial to prolonging the service life of the insulating plastic 4, so that the quality of the battery is improved, the battery has good environmental protection property and fireproof effect, and meets the environmental protection requirement in the field of new energy automobiles.
Preferably, top cover plate 3 is provided with utmost point post through-hole 31, and insulating plastic 4 is provided with a plurality of connecting portion 40, and utmost point post through-hole 31 is provided with the unsmooth complex joint portion 310 with connecting portion 40, and joint portion 310 is used for preventing that insulating plastic 4 from taking place to rotate. Insulating plastic 4 is provided with a plurality of connecting portion 40, and utmost point post through-hole 31 is provided with the joint portion 310 with the unsmooth complex of connecting portion 40, and connecting portion 40 cooperates joint portion 310, and connecting portion 40 is fixed in joint portion 310 one by one promptly, not only plays the effect of preventing slow-witted, improves the precision of assembly, can also prevent that insulating plastic 4 from taking place to rotate, is favorable to improving the fastness of insulating plastic 4, prevents that insulating plastic 4 from taking place not hard up, influences the insulating properties between utmost point post and the top cap.
Preferably, a first groove 311 is formed at the top of the pole through hole 31, the clamping portion 310 is disposed around the first groove 311, and the position of the connecting portion 40 corresponds to the position of the clamping portion 310. The top of utmost point post through-hole 31 is formed with first recess 311 for insulating plastic 4 can partly imbed top cover plate 3, can reduce the whole height of insulating plastic 4 and top cover plate 3, thereby improve the energy density of battery, in this embodiment, four limits of first recess 311 all are provided with joint portion 310, correspond with the shape and the structure of four connecting portion 40 of insulating plastic 4, reduce the probability that insulating plastic 4 takes place not hard up when using.
Preferably, the first pole column 1 includes a first base plate 11 and a first column 12 disposed on the first base plate 11, the second pole column 2 includes a second base plate 21 and a second column 22 disposed on the second base plate 21, the first base plate 11 and the first column 12 form a composite pole column by friction welding or fusion welding, and the second base plate 21 and the second column 22 are integrally formed. The first pole 1 is used as a cathode, the first column body 12 can be made of metal aluminum, the first base plate 11 is made of a metal material corresponding to the cathode plate, and the composite pole is adopted, so that the quality of the battery can be ensured not to be affected, and the production cost of the first pole 1 is reduced; the second pole column 2 is used as the anode, the second bottom plate 21 and the second column 22 can be made of metal aluminum, and the structure of integral forming is adopted, so that the quality of the battery can be guaranteed not to be affected, and the production cost of the second pole column 2 is reduced.
Preferably, the cross-section of the first cylinder 12 and the cross-section of the second cylinder 22 are square, circular or elliptical. The cross-section of the first cylinder 12 and the cross-section of the second cylinder 22 may be designed to be square, circular or elliptical, and the cross-sections may be the same or different, depending on the usage scenario of the battery.
Preferably, the tops of the first cylinder 12 and the second cylinder 22 are both provided with steps 6, and the bottoms of the first cylinder 12 and the second cylinder 22 are both provided with convex edges 7. A concave part 5 is formed between the step 6 and the convex edge 7 and used for fastening the tensile force of the insulating plastic 4 in the vertical direction, and meanwhile, the insulating plastic 4 plays a role of fastening a pole column by being embedded into the concave part 5, so that the insulating function of the top cover and the pole column is realized; wherein, protruding edge 7 can increase the area of contact between bottom plate and the cylinder to improve the steadiness between the two, wherein, step 6 is for directly forming through stamping process, compares machine tooling technology and forms concave part 5, not only improves the ability of overflowing of utmost point post, still avoids producing the wire in the course of working, has improved the security of battery.
Preferably, the height of the step 6 is equal to the height of the ledge 7. The height of the step 6 is equal to that of the convex edge 7, so that the production difficulty of the concave part 5 is reduced, the standardized production is realized, and the production cost of the battery is reduced.
Preferably, first utmost point post 1 and second utmost point post 2 all overlap and are equipped with sealing washer 8, and plastic 9 is installed down to the bottom of top cap piece 3, and utmost point post through-hole 31's top is formed with second recess 312, and second recess 312 is used for embedding sealing washer 8 and lower plastic 9. The second groove 312 can not only fasten the sealing ring 8 and the lower plastic 9, but also accommodate the lower plastic 9 and the sealing ring 8 to the top cover plate 3, so as to reduce the overall height of the top cover plate 3, the lower plastic 9 and the sealing ring 8; by adopting the design of the second groove 312, the stability between the top cover and each component is ensured, the riveting procedure is omitted, the production cost is reduced, and the production efficiency is improved; the sealing ring 8 is made of fluororubber, can seal a gap between the pole and the pole through hole 31, prevents the electrolyte from corroding the insulating plastic 4 through the gap, and also plays a role in insulating the pole and the pole through hole 31; lower plastic 9 can improve the insulating properties of top cap piece 3, can also prevent that electrolyte from corroding top cap piece 3 and leading to the battery short circuit.
Preferably, at least one of an explosion-proof valve vent hole 32 and a liquid injection hole 33 is further formed in the top cover plate 3, at least one of an explosion-proof valve accommodating hole 91 and a liquid injection through hole 92 is correspondingly formed in the lower plastic 9, an explosion-proof valve 10 is installed between the explosion-proof valve vent hole 32 and the explosion-proof valve accommodating hole 91, and a protective film 20 is installed on the top of the explosion-proof valve vent hole 32. Annotate liquid hole 33 and be convenient for pour into inside the battery with electrolyte, explosion-proof valve 10 can make the automatic quick pressure release of battery, avoid the battery explosion to lead to the emergence of incident when the battery rises owing to cross charging, cross discharging, overflow and the inside short circuit of battery leads to the battery, and wherein, explosion-proof valve bleeder vent 32 cooperates explosion-proof valve and accepts hole 91, ensures that the function of explosion-proof valve 10 can realize, annotates liquid hole 33 cooperation and annotates liquid through-hole 92, ensures that the function of annotating liquid hole 33 can realize.
The utility model discloses a theory of operation is:
because the insulating property between the pole and the top cover is poor, when an external part and the shell cause short circuit, if the current between the pole is not cut off in time, the safety performance of the battery core is reduced, even the battery core is scrapped, in the prior art, the top cover is electrically connected with the positive pole through generally installing a resistance block between the top cover and the pole or manufacturing insulating plastic on the positive pole by using a conductive material, the connection between the positive pole and the negative pole can be realized when the internal fault of the battery occurs, namely an internal protection loop is formed to prevent the battery from exploding, but a certain voltage exists between the top cover and the shell, the external part is easy to cause short circuit with the shell, therefore, the first pole is installed on the top cover plate through the insulating plastic, the first pole is insulated from the top cover plate, the second pole is installed on the top cover plate through the insulating plastic, the second pole is insulated from the top cover plate, and the insulating plastic on the first pole and, when the external short circuit occurs to the battery, the insulating plastic can isolate the top cover plate, so that the probability of the external short circuit of the battery is reduced, the probability of the circuit current damaging the battery cell is reduced, and the safety performance of the battery is improved; simultaneously, saved the insulating plastic on additionally making the positive post with conducting material, help improving the production efficiency of insulating plastic, still do benefit to the insulating plastic of mass production, reduce insulating plastic manufacturing cost, in addition, after first utmost point post is fixed in utmost point post through-hole, adopt injection molding process, and through the mould, make between first utmost point post and the top cap piece, form insulating plastic between second utmost point post and the top cap piece, insulating plastic plays the effect of fastening first utmost point post and second utmost point post, improve the steadiness between utmost point post and the top cap, prevent that utmost point post from taking place to drop.
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. The utility model provides a battery top cap insulation system which characterized in that: including first utmost point post (1), second utmost point post (2), top cap piece (3) and insulating plastic (4), first utmost point post (1) with second utmost point post (2) are passed through respectively insulating plastic (4) install in top cap piece (3).
2. A battery top cover insulating structure according to claim 1, wherein: insulating plastic (4) include body (41) and set up body (41) inboard convex part (42), the outside of first utmost point post (1) with the outside of second utmost point post (2) all be provided with convex part (42) complex concave part (5).
3. A battery top cover insulating structure according to claim 1, wherein: the insulating plastic (4) is of an integrally formed structure made of PPS (polyphenylene sulfide) materials, PSU (polystyrene) materials, PC (polycarbonate) materials, PFA (Polytetrafluoroethylene) materials, PBT (polybutylene terephthalate) materials, PA (polyamide) materials, nano materials or PP materials.
4. A battery top cover insulating structure according to claim 1, wherein: top cap piece (3) are provided with utmost point post through-hole (31), insulating plastic (4) are provided with a plurality of connecting portion (40), utmost point post through-hole (31) be provided with connecting portion (40) unsmooth complex joint portion (310), joint portion (310) are used for preventing insulating plastic (4) take place to rotate.
5. A battery top cover insulating structure according to claim 4, wherein: the top of utmost point post through-hole (31) is formed with first recess (311), joint portion (310) center on first recess (311) set up, the position of connecting portion (40) with the position of joint portion (310) corresponds.
6. A battery top cover insulating structure according to claim 1, wherein: first utmost point post (1) including first bottom plate (11) and set up in first cylinder (12) of first bottom plate (11), second utmost point post (2) including second bottom plate (21) and set up in second cylinder (22) of second bottom plate (21), first bottom plate (11) with first cylinder (12) form compound utmost point post through friction weld or butt fusion, second bottom plate (21) with second cylinder (22) are the integrated into one piece structure.
7. A battery top cover insulating structure according to claim 6, wherein: the top of first cylinder (12) with second cylinder (22) all is provided with step (6), first cylinder (12) with the bottom of second cylinder (22) all is provided with protruding edge (7).
8. A battery top cover insulating structure according to claim 7, wherein: the height of the step (6) is equal to that of the convex edge (7).
9. A battery top cover insulating structure according to claim 4, wherein: first utmost point post (1) with second utmost point post (2) all are equipped with sealing washer (8), plastic (9) are installed down to the bottom of top cap piece (3), the bottom of utmost point post through-hole (31) is formed with second recess (312), second recess (312) are used for the embedding sealing washer (8) with plastic (9) down.
10. A battery top cover insulating structure according to claim 9, wherein: still be provided with explosion-proof valve bleeder vent (32) on top cap piece (3) and annotate at least one in liquid hole (33), correspond on plastic (9) down and be provided with explosion-proof valve accepting hole (91) and annotate at least one in liquid through-hole (92), explosion-proof valve bleeder vent (32) with install explosion-proof valve (10) between explosion-proof valve accepting hole (91), protection film (20) are installed at explosion-proof valve bleeder vent (32) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921726271.XU CN211045494U (en) | 2019-10-15 | 2019-10-15 | Battery top cap insulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921726271.XU CN211045494U (en) | 2019-10-15 | 2019-10-15 | Battery top cap insulation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211045494U true CN211045494U (en) | 2020-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921726271.XU Active CN211045494U (en) | 2019-10-15 | 2019-10-15 | Battery top cap insulation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211045494U (en) |
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2019
- 2019-10-15 CN CN201921726271.XU patent/CN211045494U/en active Active
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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. |
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