CN111129373A - Pole type lightweight high-capacity lithium battery cover plate - Google Patents
Pole type lightweight high-capacity lithium battery cover plate Download PDFInfo
- Publication number
- CN111129373A CN111129373A CN202010028640.9A CN202010028640A CN111129373A CN 111129373 A CN111129373 A CN 111129373A CN 202010028640 A CN202010028640 A CN 202010028640A CN 111129373 A CN111129373 A CN 111129373A
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- China
- Prior art keywords
- cover plate
- lithium battery
- insulating pad
- pole
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 38
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 230000000903 blocking effect Effects 0.000 claims description 13
- 238000003825 pressing Methods 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/172—Arrangements of electric connectors penetrating the casing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention discloses a pole type light-weight high-capacity lithium battery cover plate, which comprises a lower insulating pad, a cover plate and an electrode assembly, wherein the cover plate is attached to the surface of the lower insulating pad, the electrode assembly is arranged on the upper surface of the cover plate, supporting sinking platforms are arranged on the cover plate corresponding to the positions of the electrode assembly, the electrode assembly comprises a sealing ring arranged on the supporting sinking platform, an electrode column positioned on the sealing ring and an insulating pad for insulating and isolating the electrode column from the cover plate, a soft connecting piece is arranged on the lower surface of the lower insulating pad corresponding to the position of the electrode assembly, the soft connecting piece comprises a convex hull structure which penetrates through the lower insulating pad and the cover plate and is attached to the lower surface of the electrode column, and the convex hull structure is a hollow structure so that the lithium battery cover plate is. The invention can improve the internal capacity of the lithium battery, ensure the stability of the performance of the lithium battery cover plate, reduce the number of assembly accessories, reduce the processing cost and reduce the assembly difficulty of the accessories.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to a pole type light-weight high-capacity lithium battery cover plate.
[ background of the invention ]
When the power lithium battery is installed on a power vehicle, the lithium battery can be placed in a box body to form a battery pack, the battery pack is sealed by a cover plate, and electric conduction is achieved through electric elements arranged on the cover plate. The lithium battery cover plate is provided with the positive rivet and the negative rivet to realize the conduction of the internal electrode of the battery and external electrical elements, the sealing of the positive rivet and the negative rivet is one of the main consideration factors of the structural design of the lithium battery cover plate in order to ensure the sealing performance inside the battery, and the light weight and the battery capacity are also research hotspots in the field in order to improve the endurance mileage of new energy automobiles.
In the prior art, the fixing of the positive rivet and the negative rivet of the battery cover plate is generally realized by arranging a connecting structure on the upper surface and the lower surface of the cover plate for riveting, and the upper surface and the lower surface of the cover plate are both provided with sealing rings, and the number of electrode assemblies is more, so that the internal resistance value of the cover plate in batch production is not stable enough, the weight is large, the improvement of endurance mileage is not facilitated, and the lower surface of the cover plate is also provided with the electrode assemblies, so that the internal capacity of the battery pack; when going under multiple operating mode, the jolt of automobile body can make the not hard up of electrode lead to contact failure in the battery apron, seriously influences normal power supply.
Therefore, it is necessary to provide a new cover plate for a pole-type light-weight high-capacity lithium battery to solve the above problems.
[ summary of the invention ]
The invention aims to provide a pole type light-weight high-capacity lithium battery cover plate which can improve the internal capacity of a lithium battery, ensure the stability of the performance of the lithium battery cover plate, reduce the number of assembly accessories, reduce the processing cost and reduce the assembly difficulty of the accessories.
The invention realizes the purpose through the following technical scheme: the utility model provides a pole column formula lightweight high capacity lithium cell apron, its include down insulating pad, with insulating pad surface pastes apron, setting that sets up down are in the anodal subassembly and the negative pole subassembly of apron upper surface, be corresponding to on the apron anodal subassembly with negative pole subassembly position all is provided with supports heavy platform, anodal subassembly with negative pole subassembly all is including setting up support sealing washer on heavy platform, be located electrode post on the sealing washer, general electrode post with insulating the insulating pad of keeping apart between the apron, the lower surface of insulating pad down correspond to anodal subassembly with negative pole subassembly position all is provided with a soft connecting piece, soft connecting piece is including passing insulating pad down with apron and upper surface with the protruding package structure that electrode post lower surface pasted the setting mutually, protruding package structure makes for hollow structure lithium cell apron is in negative pole subassembly with the regional next square one-tenth of positive pole subassembly indent has a structure .
Furthermore, the flexible connector comprises a plate-shaped limiting part attached to the surface of the lower insulating pad, and a convex hull structure which protrudes upwards from the surface of the plate-shaped limiting part and is integrated with the plate-shaped limiting part.
Furthermore, the middle part of the support sinking platform is provided with a transparent first opening, and the lower insulating pad is provided with a second opening corresponding to the first opening.
Further, the convex hull structure penetrates through the second opening and the first opening, and the upper surface of the convex hull structure is welded with the lower surface of the electrode column.
Furthermore, the cover plate comprises a limiting surrounding blocking part which extends upwards along the periphery of the supporting sinking platform, and a mounting groove which is formed by the supporting sinking platform and the limiting surrounding blocking part and is used for assembling the positive electrode assembly or the negative electrode assembly, wherein the upper part of the limiting surrounding blocking part is inwards turned to form a turning and pressing part.
Furthermore, the electrode column comprises a plate-shaped part arranged in the mounting groove and a columnar part extending upwards from the surface of the plate-shaped part, and a limit step matched with the turnover pressing part to realize pressing is formed on one circle of the periphery of the plate-shaped part.
Further, the surface of the columnar part is provided with a thread structure.
Further, the whole body of the plate-shaped part is accommodated in the mounting groove, the insulating pad is sleeved on the outer peripheral surface of the plate-shaped part and is extruded by the outer periphery of the plate-shaped part and the limiting surrounding blocking part, so that the electrode column and the cover plate can be completely isolated without gaps.
Further, the electrode clamping ring is used for wrapping the limiting surrounding blocking part and strengthening the clamping force of the limiting surrounding blocking part on the electrode column.
Furthermore, the lower surface of the cover plate is provided with a plurality of buckle hook portions, and the lower insulating pad is provided with a plurality of buckle protruding portions matched with the buckle hook portions to realize buckle connection.
Compared with the prior art, the pole type light-weight high-capacity lithium battery cover plate has the beneficial effects that: through the structural design of the soft connecting piece with the convex hull structure, the battery cover plate is integrally provided with an inward concave structure below the negative electrode assembly and the positive electrode assembly, so that the internal space of the battery is improved, and the capacity and the energy density of the battery are increased.
[ description of the drawings ]
FIG. 1 is a schematic illustration of an explosive structure according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a support platform on a cover plate according to an embodiment of the present invention;
FIG. 3 is a sectional view schematically illustrating the assembly of the electrode assembly according to the embodiment of the present invention;
FIG. 4 is a schematic structural view of a hook portion of a cover plate according to an embodiment of the present invention;
FIG. 5 is a schematic view of a snap-fit connection between a cover plate and a lower insulating pad according to an embodiment of the present invention;
description of reference numerals:
100 pole type light weight high capacity lithium battery cover plate;
1 lower insulating pad, 11 second opening, 12 snap projection;
2, a cover plate, 21, a supporting sinking platform, 22, a limiting and blocking part, 23, a turnover pressing part, 24, a mounting groove, 25, a first opening and 26, wherein the bent hook part is buckled;
3, sealing rings; 4 electrode column, 41 plate part, 42 limit step, 43 column part;
5, an insulating pad; 6 soft connecting piece, 61 plate-shaped limiting part, 62 convex hull structure;
7, a concave structure;
8, electrode holding rings; 9, an explosion-proof membrane; 10 pieces of paste.
[ detailed description ] embodiments
The invention will now be further described with reference to the accompanying drawings.
Referring to fig. 1 to 5, in the present embodiment, a cover plate 100 for a pole type light weight high capacity lithium battery, which comprises a lower insulating pad 1, a cover plate 2 arranged on the surface of the lower insulating pad 1 in a sticking way, a positive electrode component and a negative electrode component arranged on the cover plate 2, a supporting sinking platform 21 arranged on the cover plate 2, a limiting surrounding part 22 arranged along the periphery of the supporting sinking platform 21 in an upward extending way, and a mounting groove 24 formed by the supporting sinking platform 21 and the limiting surrounding part 22 and used for assembling the positive electrode component or the negative electrode component, the positive pole subassembly with the negative pole subassembly all includes the sealing washer 3 that sets up on supporting heavy platform 21, is located electrode column 4 on sealing washer 3, the insulating pad 5 of insulating isolation between electrode column 4 and the apron 2, and electrode column 4 is including setting up the slabby portion 41 in mounting groove 24, the column portion 43 that upwards extends the setting from slabby portion 41 surface.
The upper part of the limiting surrounding part 22 is turned inwards to form a turning and pressing part 23. A limit step 42 matched with the folding pressing part 23 to realize pressing is formed on one circle of the periphery of the plate-shaped part 41.
The middle part of the support sinking platform 21 is provided with a through first opening 25, and the lower insulating pad 1 is provided with a second opening 11 corresponding to the first opening 25.
In this embodiment, a soft connector 6 is disposed on the lower surface of the lower insulating pad 1 corresponding to the positive electrode assembly and the negative electrode assembly. The flexible connecting piece 6 comprises a plate-shaped limiting part 61 and a hollow convex hull structure 62 which protrudes upwards from the surface of the plate-shaped limiting part 61, wherein the convex hull structure 62 penetrates through the second opening 11 and the first opening 25, and the upper surface of the convex hull structure is attached to the lower surface of the electrode column 4. The convex hull structure 62 is connected with the surface of the electrode column 4 by welding. Through setting up hollow convex closure structure, can effectual reduction flexible connector 6's whole weight, realize the lightweight design.
From bottom to top, through the design of convex hull structure 62, battery cover plate 100 is wholly formed with indent structure 7 below the negative pole subassembly with positive pole subassembly region for the battery inner space is promoted, thereby has increased battery capacity.
The surface of the column part 43 of the electrode column 4 is provided with a thread structure, so that the electrode column is conveniently connected with an external battery in series.
The plate-like portion 41 is entirely housed in the mounting groove 24. The insulating pad 5 is sleeved on the outer peripheral surface of the plate-shaped portion 41 and is extruded by the outer periphery of the plate-shaped portion 41 and the limiting baffle portion 22, so that the electrode column 4 and the cover plate 2 can be completely isolated and no gap exists.
The embodiment also comprises an electrode holding ring 8 which wraps the limit retaining surrounding part 22 and strengthens the holding force of the limit retaining surrounding part 22 to the electrode column 4.
In one embodiment, the electrode column 4 is made of copper or aluminum material. In another embodiment, the electrode column 4 is made of copper-aluminum composite material, specifically, an aluminum bottom plate is used at the bottom of the plate-shaped portion 41, and the other structure of the electrode column 4 is made of copper material.
In order to facilitate the simple assembly of the lower insulating pad 1 and the cover plate 2, the lower surface of the cover plate 2 is provided with the buckle hook portions 26 at the two end regions, the buckle protrusions 12 which are matched with the buckle hook portions 26 to realize the buckle connection are correspondingly arranged on the lower insulating pad 1, and the lower insulating pad 1 is quickly assembled and connected with the cover plate 2 by the buckle connection of the buckle hook portions 26 and the buckle protrusions 12.
The cover plate 2 is also provided with an explosion-proof film 9 and a dustproof surface sticker 10 covering the explosion-proof film 9.
In this embodiment, the shape of the plate-shaped portion 41 and the stopper portion 22 of the electrode column 4 is any one of circular, oval, kidney-shaped, square, and polygonal.
Lithium battery cover plate 100 only realizes through electrode post 4 because of the internal-external connection, does not have the accessory assembly to combine to cause the stability problem of internal resistance to, directly guarantee the uniformity of resistance in the lithium battery cover plate through material itself, and can indirectly reduce the lithium battery cover plate charge-discharge temperature value that generates heat. The contact between the cover plate 2 and the electrode column 4 is thoroughly separated by the insulating pad 5, and the discharge arc phenomenon of the cover plate 2 caused by gaps during charging and discharging is effectively prevented.
The flexible connector 6 in this embodiment is through ingenious structural design, when realizing the welded connection of flexible connector 6 and electrode post 4, place flexible connector 6 in the lower part, then put the apron assembly of the positive pole subassembly and the negative pole subassembly of will assembling on flexible connector 6, because the action of gravity this moment, the convex closure structure 62 upper surface on flexible connector 6 can directly be hugged closely to the lower surface of electrode post 4, then utilize laser welding together can, in the manufacture craft, the frock for the welding has been saved, the simplicity and the reliability of battery apron manufacture craft have been realized.
In the embodiment, the cover plate 2 is provided with the limit surrounding part 22 formed by drawing, the support sinking platform 21 formed by pressing the step and the upper part of the limit surrounding part 22 for closing up, the overall performance of the positive electrode assembly and the negative electrode assembly in the lithium battery cover plate accessory is compressed by the structure, and the internal space of the lithium battery can be directly and effectively improved and the energy density can be increased because the positive electrode assembly and the negative electrode assembly are assembled on the front surface of the cover plate 2; in the embodiment, the electrode column 4 and the cover plate 2 are formed by metal materials, and the metal materials are small in deformation and scaling amount under the extreme environmental condition of-40 ℃ to 85 ℃, so that the sealing performance of the lithium battery cover plate is not affected, and the leakage risk exists when the sealing performance of the lithium battery cover plate is provided by a welding process and the strength of a plastic part.
While the technical content and the technical features of the invention have been disclosed, those skilled in the art can make various substitutions and modifications based on the teaching and the disclosure of the invention without departing from the spirit of the invention. Therefore, the protection scope of the present invention should not be limited to the embodiments shown, but should include various alternatives and modifications without departing from the invention and covered by the claims.
Claims (10)
1. The utility model provides a pole formula lightweight high capacity lithium cell apron which characterized in that: which comprises a lower insulating pad, a cover plate arranged on the surface of the lower insulating pad in a sticking way, a positive electrode component and a negative electrode component arranged on the upper surface of the cover plate, the cover plate is provided with supporting sinking platforms corresponding to the positive electrode assembly and the negative electrode assembly, the positive electrode component and the negative electrode component respectively comprise a sealing ring arranged on the supporting sinking platform, an electrode column positioned on the sealing ring, and an insulating pad for insulating and isolating the electrode column and the cover plate, the lower surface of the lower insulating pad is provided with a soft connecting piece corresponding to the positions of the positive electrode component and the negative electrode component, the soft connecting piece comprises a convex hull structure which penetrates through the lower insulating pad and the cover plate, and the upper surface of the convex hull structure is attached to the lower surface of the electrode column, the convex hull structure is a hollow structure, so that the lithium battery cover plate is provided with an inward concave structure below the negative electrode assembly and the positive electrode assembly.
2. The pole-type light-weight high-capacity lithium battery cover plate of claim 1, wherein: the flexible connecting piece comprises a plate-shaped limiting part attached to the surface of the lower insulating pad, and a convex hull structure which protrudes upwards from the surface of the plate-shaped limiting part and is integrated with the plate-shaped limiting part.
3. The pole-type light-weight high-capacity lithium battery cover plate of claim 1, wherein: the middle part of the support sinking platform is provided with a transparent first opening, and the lower insulating pad is provided with a second opening corresponding to the first opening.
4. The pole type light-weight high-capacity lithium battery cover plate of claim 3, wherein: the convex hull structure penetrates through the second opening and the first opening, and the upper surface of the convex hull structure is welded with the lower surface of the electrode column.
5. The pole-type light-weight high-capacity lithium battery cover plate of claim 1, wherein: the cover plate comprises a limiting surrounding blocking part which is arranged along the periphery of the supporting sinking platform and extends upwards, the supporting sinking platform and the limiting surrounding blocking part are assembled around a mounting groove which is formed for assembling the positive electrode assembly or the negative electrode assembly, and the upper part of the limiting surrounding blocking part is inwards turned to form a turning and pressing part.
6. The pole-type light-weight high-capacity lithium battery cover plate of claim 5, wherein: the electrode column comprises a plate-shaped part arranged in the mounting groove and a columnar part extending upwards from the surface of the plate-shaped part, and a limit step matched with the turning and pressing part to realize pressing is formed on one circle of the periphery of the plate-shaped part.
7. The pole-type light-weight high-capacity lithium battery cover plate of claim 6, wherein: the surface of the columnar part is provided with a thread structure.
8. The pole-type light-weight high-capacity lithium battery cover plate of claim 6, wherein: the whole body of the plate-shaped part is accommodated in the mounting groove, the insulating pad is sleeved on the outer peripheral surface of the plate-shaped part and is subjected to extrusion of the plate-shaped part outer periphery and the limiting blocking part, so that the electrode column and the cover plate can be completely isolated and cannot have gaps.
9. The pole-type light-weight high-capacity lithium battery cover plate of claim 5, wherein: the electrode pole clamping ring is characterized in that the limiting surrounding blocking part is wrapped to strengthen the electrode pole clamping force of the limiting surrounding blocking part.
10. The pole-type light-weight high-capacity lithium battery cover plate of claim 1, wherein: the lower surface of the cover plate is provided with a plurality of buckle hook portions, and the lower insulating pad is provided with a plurality of buckle protruding portions matched with the buckle hook portions to realize buckle connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010028640.9A CN111129373A (en) | 2020-01-11 | 2020-01-11 | Pole type lightweight high-capacity lithium battery cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010028640.9A CN111129373A (en) | 2020-01-11 | 2020-01-11 | Pole type lightweight high-capacity lithium battery cover plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111129373A true CN111129373A (en) | 2020-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010028640.9A Pending CN111129373A (en) | 2020-01-11 | 2020-01-11 | Pole type lightweight high-capacity lithium battery cover plate |
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| Country | Link |
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| CN (1) | CN111129373A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205881982U (en) * | 2016-08-12 | 2017-01-11 | 苏州三众新能源科技有限公司 | Utmost point column type lithium battery shell body apron |
| CN108198966A (en) * | 2017-12-01 | 2018-06-22 | 力神动力电池系统有限公司 | A kind of battery cover board with novel pole sealing structure |
| CN110176557A (en) * | 2019-04-09 | 2019-08-27 | 宁德时代新能源科技股份有限公司 | Secondary battery and top cover assembly thereof |
| CN110335980A (en) * | 2019-07-24 | 2019-10-15 | 苏州炬鸿通讯电脑科技有限公司 | A kind of cover board structure of lithium battery that can improve capacity |
| CN211295164U (en) * | 2020-01-11 | 2020-08-18 | 苏州炬鸿通讯电脑科技有限公司 | Pole type lightweight high-capacity lithium battery cover plate |
-
2020
- 2020-01-11 CN CN202010028640.9A patent/CN111129373A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205881982U (en) * | 2016-08-12 | 2017-01-11 | 苏州三众新能源科技有限公司 | Utmost point column type lithium battery shell body apron |
| CN108198966A (en) * | 2017-12-01 | 2018-06-22 | 力神动力电池系统有限公司 | A kind of battery cover board with novel pole sealing structure |
| CN110176557A (en) * | 2019-04-09 | 2019-08-27 | 宁德时代新能源科技股份有限公司 | Secondary battery and top cover assembly thereof |
| CN110335980A (en) * | 2019-07-24 | 2019-10-15 | 苏州炬鸿通讯电脑科技有限公司 | A kind of cover board structure of lithium battery that can improve capacity |
| CN211295164U (en) * | 2020-01-11 | 2020-08-18 | 苏州炬鸿通讯电脑科技有限公司 | Pole type lightweight high-capacity lithium battery cover plate |
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