CN216488408U - Square lithium ion battery with integrated cover plate - Google Patents
Square lithium ion battery with integrated cover plate Download PDFInfo
- Publication number
- CN216488408U CN216488408U CN202123371779.2U CN202123371779U CN216488408U CN 216488408 U CN216488408 U CN 216488408U CN 202123371779 U CN202123371779 U CN 202123371779U CN 216488408 U CN216488408 U CN 216488408U
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- China
- Prior art keywords
- plate part
- positive electrode
- negative
- pole
- negative electrode
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 18
- 239000002985 plastic film Substances 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 7
- 230000010354 integration Effects 0.000 claims description 5
- 238000005452 bending Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052744 lithium Inorganic materials 0.000 abstract description 5
- 238000003466 welding Methods 0.000 description 10
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
Images
Classifications
-
- 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
A square lithium ion battery with an integrated cover plate relates to a lithium ion battery. The cover plate is connected with the upper end of the outer shell, a plastic sheet is arranged in the middle of the cover plate, an anode upper insulating pad is arranged at the upper end, a cathode upper insulating pad, an anode pole column and a cathode pole column are arranged at the lower end, a lower insulating pad is arranged at the lower end, an explosion-proof valve corresponding to the plastic sheet is arranged in the middle of the insulating pad, an anode tab riveted with the anode pole column and a cathode tab riveted with the cathode pole column are arranged at the lower end of the lower insulating pad, the anode tab is connected with an anode tab, the cathode tab is connected with a cathode tab, the anode tab and the cathode tab are arranged on a pole group, and the explosion-proof valve, the lower insulating pad, the anode tab, the cathode tab, the pole group, the anode tab and the cathode tab are arranged in the outer shell. The utility model discloses reduced battery weight, safe risk and manufacturing cost, promoted the whole energy density of battery and product profit, positive negative pole draws the piece to be connected through reverse bending location and utmost point ear, and easy operation has just promoted lithium cell space utilization, has reduced the risk that utmost point ear was inserted upside down.
Description
Technical Field
The utility model relates to a lithium ion battery, especially a square lithium ion battery with integration apron.
Background
The cover plate, the positive and negative connecting sheets, the pole group and the aluminum shell form a complete square lithium ion battery, and the positive and negative poles on the cover plate are used as terminals for externally connecting output and input current, so that the normal work of the lithium ion battery is ensured.
However, the cover plate of the existing lithium ion battery has heavier mass and higher cost; the cover plate and the connecting sheet are separated, and the production process, equipment and labor are required to be increased, so that the manufacturing cost is increased; meanwhile, the bending mode of the cover plate is forward bending (as shown in the attached drawing 1), and the problems of difficult operation, difficult management and control and safety risk exist.
SUMMERY OF THE UTILITY MODEL
For solving the problem that exists among the background art, the utility model provides a square lithium ion battery with integration apron.
The purpose is achieved, the utility model adopts the following technical proposal: a square lithium ion battery with an integrated cover plate comprises a pole group, a positive pole lug, a negative pole lug, the integrated cover plate and an outer shell; the integration apron is connected with the upper end of shell body, and the lower extreme and the anodal utmost point ear and the negative pole utmost point ear of integration apron are connected, anodal utmost point ear and negative pole utmost point ear all set up on utmost point group, anodal utmost point ear, negative pole utmost point ear all set up in the shell body.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the positive pole column and the negative pole column of the utility model are made of aluminum, which improves the PACK efficiency, reduces the weight and the production cost of the battery, and improves the overall energy density of the battery and the profit of the product;
2. the positive pole guide piece and the negative pole guide piece are integrated with the cover plate, so that the production processes, welding equipment and operators are reduced, the production cost is reduced, and after the laser welding process is cancelled, metal slag caused by laser welding is avoided, and the safety risk of the lithium battery is reduced;
3. the utility model discloses anodal draw piece and negative pole draw the piece to be connected through the utmost point ear of backward bending location and correspondence, carry out the essence location to bending direction and position, need not to increase frock clamp and equipment and carry out the assistance-localization real-time, and the easy operation of backward bending, level and smooth after bending, promoted lithium cell space utilization, reduced the safe risk that utmost point ear inserted upside down and aroused.
Drawings
FIG. 1 is a schematic diagram of a prior art configuration;
fig. 2 is a schematic structural diagram of the present invention;
FIG. 3 is a schematic structural view of an integrated cover plate;
FIG. 4 is a bottom view of FIG. 3;
FIG. 5 is an exploded view of FIG. 3;
FIG. 6 is a schematic structural view of a cover plate;
FIG. 7 is a schematic structural view of a positive tab;
FIG. 8 is a schematic structural view of a negative tab;
fig. 9 is a schematic view of the connection process of the tab and the tab.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.
A square lithium ion battery with an integrated cover plate comprises a pole group 14, a positive pole lug 15, a negative pole lug 16, the integrated cover plate and an outer shell; the integrated cover plate is connected with the upper end of the aluminum outer shell in a sealing mode through laser welding, a closed lithium ion battery is manufactured, the lower end of the integrated cover plate is connected with the positive pole lug 15 and the negative pole lug 16, the positive pole lug 15 and the negative pole lug 16 are arranged on the pole group 14, and the pole group 14, the positive pole lug 15 and the negative pole lug 16 are arranged in the outer shell.
The integrated cover plate comprises an upper anode insulating pad 1, an upper cathode insulating pad 2, a plastic sheet 3, an anode pole 4, a cathode pole 5, a cover plate 6, a sealing ring 7, an explosion-proof valve 8, a lower insulating pad 9, an anode lead sheet 10, a cathode lead sheet 11, an anode rivet 12 and a cathode rivet 13; the cover plate 6 is connected with the upper end of the aluminum outer shell in a sealing mode through laser welding to form a closed lithium ion battery, a plastic sheet 3 is arranged in the middle of the cover plate 6, an upper positive electrode insulating pad 1, an upper negative electrode insulating pad 2, a positive electrode pole 4 and a negative electrode pole 5 are arranged at the upper end of the cover plate 6, the upper positive electrode insulating pad 1 is sleeved on the outer side of the positive electrode pole 4, and the upper negative electrode insulating pad 2 is sleeved on the outer side of the negative electrode pole 5; the lower end of the cover plate 6 is provided with a lower insulating pad 9, and the anode upper insulating pad 1, the cathode upper insulating pad 2 and the lower insulating pad 9 play roles in sealing and insulating; the lower insulating pad 9 prevents the short circuit of the anode and the cathode, the design is simple and effective, and the cost is saved; an explosion-proof valve 8 is arranged in the middle of the lower insulating pad 9, and the explosion-proof valve 8 corresponds to the plastic sheet 3; the plastic sheet 3 plays a role in protecting the explosion-proof valve 8, prevents moisture from entering and corroding the explosion-proof valve 8, and avoids the explosion-proof sheet from being damaged in the circulation process; the lower end of the lower insulating pad 9 is provided with a positive lead piece 10 and a negative lead piece 11 which are symmetrically arranged, the positive lead piece 10 is riveted with the positive pole post 4 through a positive rivet 12, the negative lead piece 11 is riveted with the negative pole post 5 through a negative rivet 13, and the outer sides of the positive rivet 12 and the negative rivet 13 are respectively sleeved with a sealing ring 7; current is output and input externally through the anode pole 4 and the cathode pole 5; the positive pole tab 10 is connected with the positive pole tab 15, the negative pole tab 11 is connected with the negative pole tab 16, and the explosion-proof valve 8, the lower insulating pad 9, the positive pole tab 10 and the negative pole tab 11 are all arranged in the outer shell.
The positive tab 10 comprises a positive first plate part 17, a positive second plate part 18 and a positive third plate part 19; one side wall of the positive electrode first plate portion 17 is fixedly connected to one side wall of the positive electrode second plate portion 18, the other side wall of the positive electrode second plate portion 18 is fixedly connected to one side wall of the positive electrode third plate portion 19, and the one side wall of the positive electrode second plate portion 18 is disposed adjacent to the other side wall of the positive electrode second plate portion 18, that is: the positive electrode first plate portion 17, the positive electrode second plate portion 18, and the positive electrode third plate portion 19 are L-shaped; a positive electrode longitudinal positioning hole 20 is arranged between the positive electrode first plate part 17 and the positive electrode second plate part 18, a positive electrode transverse positioning hole 21 is arranged between the positive electrode second plate part 18 and the positive electrode third plate part 19, and the positive electrode first plate part 17, the positive electrode second plate part 18 and the positive electrode third plate part 19 are integrally formed; the positive electrode first plate part 17 is riveted with the positive electrode pole 4 through the positive electrode rivet 12, and the positive electrode second plate part 18 and the positive electrode third plate part 19 are bent through the positive electrode transverse positioning hole 21 and then connected with the positive electrode pole lug 15 through ultrasonic welding.
The negative electrode tabs 11 each comprise a negative electrode first plate part 22, a negative electrode second plate part 23 and a negative electrode third plate part 24; one side wall of the negative electrode first plate portion 22 is fixedly connected with one side wall of the negative electrode second plate portion 23, the other side wall of the negative electrode second plate portion 23 is fixedly connected with one side wall of the negative electrode third plate portion 24, and the one side wall of the negative electrode second plate portion 23 is arranged adjacent to the other side wall of the negative electrode second plate portion 23, namely: the negative electrode first plate portion 22, the negative electrode second plate portion 23, and the negative electrode third plate portion 24 are L-shaped; a negative longitudinal positioning hole 25 is arranged between the negative first plate part 22 and the negative second plate part 23, a negative transverse positioning hole 26 is arranged between the negative second plate part 23 and the negative third plate part 24, and the negative first plate part 22, the negative second plate part 23 and the negative third plate part 24 are integrally formed; the negative electrode first plate portion 22 and the negative electrode post 4 are riveted by the negative electrode rivet 12, and the negative electrode second plate portion 23 and the negative electrode third plate portion 24 are bent by the negative electrode transverse positioning hole 26 and then connected to the negative electrode tab 15 by ultrasonic welding.
The positive electrode post 4 and the negative electrode post 5 are made of aluminum, so that the PACK efficiency is improved, the weight and the production cost of the battery are reduced, and the overall energy density of the battery and the profit of a product are improved;
the positive electrode lead piece 10 and the negative electrode lead piece 11 are integrally arranged with the cover plate 6, so that one set of production process, two sets of laser welding equipment and four operators are reduced, the production and manufacturing cost is reduced, metal slag caused by laser welding is avoided after the laser welding process is cancelled, and the safety risk of the lithium battery is greatly reduced;
the positive pole leading piece 10 and the negative pole leading piece 11 are connected with the corresponding pole lugs through bending positioning, the bending direction and the bending position are precisely positioned, auxiliary positioning is performed without adding a tool clamp and equipment, the space utilization rate of the lithium battery is improved, and the safety risk caused by inverted insertion of the pole lugs is reduced.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (4)
1. The utility model provides a square lithium ion battery with integration apron which characterized in that: the battery lead frame comprises a pole group (14), a positive pole tab (15), a negative pole tab (16), an integrated cover plate and an outer shell; the integrated cover plate is connected with the upper end of the outer shell, the lower end of the integrated cover plate is connected with a positive pole lug (15) and a negative pole lug (16), the positive pole lug (15) and the negative pole lug (16) are arranged on the pole group (14), and the pole group (14), the positive pole lug (15) and the negative pole lug (16) are arranged in the outer shell.
2. The square lithium ion battery with an integrated cover plate according to claim 1, wherein: the integrated cover plate comprises an upper positive electrode insulating pad (1), an upper negative electrode insulating pad (2), a plastic sheet (3), a positive electrode pole (4), a negative electrode pole (5), a cover plate (6), a sealing ring (7), an explosion-proof valve (8), a lower insulating pad (9), a positive electrode lead sheet (10), a negative electrode lead sheet (11), a positive electrode rivet (12) and a negative electrode rivet (13); the cover plate (6) is connected with the upper end of the outer shell, a plastic sheet (3) is arranged in the middle of the cover plate (6), an upper positive insulating pad (1), an upper negative insulating pad (2), a positive pole post (4) and a negative pole post (5) are arranged at the upper end of the cover plate (6), the upper positive insulating pad (1) is sleeved on the outer side of the positive pole post (4), and the upper negative insulating pad (2) is sleeved on the outer side of the negative pole post (5); a lower insulating pad (9) is arranged at the lower end of the cover plate (6), an explosion-proof valve (8) is arranged in the middle of the lower insulating pad (9), and the explosion-proof valve (8) is arranged corresponding to the plastic sheet (3); the lower end of the lower insulating pad (9) is provided with a positive electrode lead piece (10) and a negative electrode lead piece (11) which are symmetrically arranged, the positive electrode lead piece (10) is riveted with a positive electrode pole (4) through a positive electrode rivet (12), the negative electrode lead piece (11) is riveted with a negative electrode pole (5) through a negative electrode rivet (13), and the outer sides of the positive electrode rivet (12) and the negative electrode rivet (13) are sleeved with sealing rings (7); the explosion-proof valve (8), the lower insulating pad (9), the positive pole leader (10) and the negative pole leader (11) are all arranged in the outer shell.
3. The square lithium ion battery with the integrated cover plate as claimed in claim 2, wherein: the positive electrode tab (10) comprises a positive electrode first plate part (17), a positive electrode second plate part (18) and a positive electrode third plate part (19); one side wall of the positive electrode first plate part (17) is fixedly connected with one side wall of the positive electrode second plate part (18), the other side wall of the positive electrode second plate part (18) is fixedly connected with one side wall of the positive electrode third plate part (19), one side wall of the positive electrode second plate part (18) is adjacent to the other side wall of the positive electrode second plate part (18), a positive electrode longitudinal positioning hole (20) is arranged between the positive electrode first plate part (17) and the positive electrode second plate part (18), a positive electrode transverse positioning hole (21) is arranged between the positive electrode second plate part (18) and the positive electrode third plate part (19), and the positive electrode first plate part (17), the positive electrode second plate part (18) and the positive electrode third plate part (19) are integrally formed; the positive electrode first plate part (17) is riveted with the positive electrode pole (4) through a positive electrode rivet (12), and the positive electrode second plate part (18) and the positive electrode third plate part (19) are connected with the positive electrode lug (15) after being bent through a positive electrode transverse positioning hole (21).
4. The square lithium ion battery with an integrated cover plate according to claim 2, wherein: the negative electrode tabs (11) each comprise a negative electrode first plate portion (22), a negative electrode second plate portion (23), and a negative electrode third plate portion (24); one side wall of the negative electrode first plate part (22) is fixedly connected with one side wall of the negative electrode second plate part (23), the other side wall of the negative electrode second plate part (23) is fixedly connected with one side wall of the negative electrode third plate part (24), one side wall of the negative electrode second plate part (23) is adjacent to the other side wall of the negative electrode second plate part (23), a negative electrode longitudinal positioning hole (25) is arranged between the negative electrode first plate part (22) and the negative electrode second plate part (23), a negative electrode transverse positioning hole (26) is arranged between the negative electrode second plate part (23) and the negative electrode third plate part (24), and the negative electrode first plate part (22), the negative electrode second plate part (23) and the negative electrode third plate part (24) are integrally formed; the first negative plate part (22) and the negative pole post (5) are riveted through a negative rivet (13), and the second negative plate part (23) and the third negative plate part (24) are connected with the negative pole tab (16) after being bent through a negative transverse positioning hole (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123371779.2U CN216488408U (en) | 2021-12-29 | 2021-12-29 | Square lithium ion battery with integrated cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123371779.2U CN216488408U (en) | 2021-12-29 | 2021-12-29 | Square lithium ion battery with integrated cover plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216488408U true CN216488408U (en) | 2022-05-10 |
Family
ID=81430728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123371779.2U Active CN216488408U (en) | 2021-12-29 | 2021-12-29 | Square lithium ion battery with integrated cover plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216488408U (en) |
-
2021
- 2021-12-29 CN CN202123371779.2U patent/CN216488408U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A square lithium-ion battery with integrated cover Effective date of registration: 20230110 Granted publication date: 20220510 Pledgee: Harbin Kechuang Financing Guarantee Co.,Ltd. Pledgor: Harbin Guangyu new energy Co.,Ltd. Registration number: Y2023230000013 |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 150060 Room 202, building 1, Nanhu street, Yingbin Road, hi tech Industrial Development Zone, Harbin City, Heilongjiang Province Patentee after: Harbin Coslight New ENERGY Co.,Ltd. Address before: 150060 Room 202, building 1, Nanhu street, Yingbin Road, hi tech Industrial Development Zone, Harbin City, Heilongjiang Province Patentee before: Harbin Guangyu new energy Co.,Ltd. |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20220510 Pledgee: Harbin Kechuang Financing Guarantee Co.,Ltd. Pledgor: Harbin Guangyu new energy Co.,Ltd. Registration number: Y2023230000013 |