CN212934723U - Square battery and electric automobile comprising same - Google Patents
Square battery and electric automobile comprising same Download PDFInfo
- Publication number
- CN212934723U CN212934723U CN202021942769.2U CN202021942769U CN212934723U CN 212934723 U CN212934723 U CN 212934723U CN 202021942769 U CN202021942769 U CN 202021942769U CN 212934723 U CN212934723 U CN 212934723U
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- China
- Prior art keywords
- positive
- negative
- negative electrode
- injection molding
- connecting sheet
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- 239000011248 coating agent Substances 0.000 claims abstract description 15
- 238000000576 coating method Methods 0.000 claims abstract description 15
- 238000004804 winding Methods 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 8
- 238000004806 packaging method and process Methods 0.000 claims abstract description 8
- 238000001746 injection moulding Methods 0.000 claims description 65
- 239000000758 substrate Substances 0.000 claims description 26
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 239000012212 insulator Substances 0.000 claims 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052744 lithium Inorganic materials 0.000 abstract description 4
- 229910052782 aluminium Inorganic materials 0.000 description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 239000002390 adhesive tape Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000004381 surface treatment Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Images
Classifications
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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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model provides a square battery and contain its electric automobile. The square battery includes: the core bodies are connected in parallel and are winding cores or stacked cores; an insulating coating film hermetically coating the core; a metal case outside the insulating coating film; the positive electrode soft connecting sheet is connected with the positive electrode lug of the core body, and the negative electrode soft connecting sheet is connected with the negative electrode lug of the core body; the positive cover plate is used for packaging the positive end of the core body and is electrically connected with the positive flexible connecting sheet; and the negative electrode cover plate is used for packaging the negative electrode end of the core body and is electrically connected with the negative electrode flexible connecting sheet. The utility model discloses a square battery can effectively improve the volume utilization ratio of lithium cell in finite space, has higher continuation of the journey mileage and with low costs.
Description
Technical Field
The utility model relates to a battery especially relates to a square battery with great size, belongs to lithium ion battery technical field.
Background
The lithium battery has high energy density, no memory effect, long single-section cycle period, high efficiency, cleanness and no pollution, and is widely applied. In recent years, under the dual-driven role of policy and cost competition, new energy technology needs to be continuously evolved to low cost, modularization and standardization. The reduction of the technical cost is absolutely not a bad thing at this moment, and the reduction of the metal material cost, the research and development and the manufacturing cost can greatly reduce the planning pressure of the whole vehicle, reserve more space for quality improvement on one hand, keep the price advantage on the other hand, and improve the cost performance of the whole vehicle.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, an object of the utility model is to provide an equipment is simple, efficient, space utilization is high battery.
In order to achieve the above technical object, the utility model provides a square battery, this square battery includes:
the core bodies are connected in parallel and are winding cores or stacked cores;
an insulating coating film hermetically coating the core;
a metal case outside the insulating coating film;
the positive electrode soft connecting sheet is connected with the positive electrode lug of the core body, and the negative electrode soft connecting sheet is connected with the negative electrode lug of the core body;
the positive cover plate is used for packaging the positive end of the core body and is electrically connected with the positive flexible connecting sheet;
and the negative electrode cover plate is used for packaging the negative electrode end of the core body and is electrically connected with the negative electrode flexible connecting sheet.
The utility model discloses a square battery can improve the volume utilization ratio of lithium cell in finite space, and then improves the continuation of the journey mileage, and reduce cost does benefit to the module modularization simultaneously.
The utility model discloses an in the embodiment, insulating coating film can be the coating film that any one packaging material made in PET, PP, PVC, the plastic-aluminum membrane, or other can form the structure of sealed insulating cladding to the core.
In a specific embodiment of the present invention, the positive cover plate includes a positive nano-injection terminal, an explosion-proof valve, a positive substrate, a positive upper stop frame, and a positive lower stop frame; the anode nano injection molding terminal sequentially penetrates through the explosion-proof valve, the anode substrate, the anode upper stop frame and the anode lower stop frame. The positive cover plate is formed and assembled based on a nano injection molding technology. The positive electrode nanometer injection molding terminal, the explosion-proof valve and the positive electrode substrate are welded into a whole, the positive electrode upper stop frame is fixed with the positive electrode substrate through double faced adhesive tape, and the positive electrode lower stop frame is assembled with the positive electrode upper stop frame through a buckle.
The utility model discloses an in a specific embodiment, anodal nanometer terminal of moulding plastics includes anodal connection piece, anodal nanometer ring and the anodal weak baffle of moulding plastics. The surface of the anode nano injection molding ring is subjected to metal surface treatment, so that the anode nano injection molding ring is hermetically assembled with the anode connecting sheet and the anode injection molding weak guide plate. The positive connecting piece is a bending structure formed by two extension surfaces, wherein one extension surface sequentially penetrates through the positive nanometer injection molding ring and the positive injection molding weak guide plate. Specifically, one of the extension surfaces sequentially penetrates through the anode nano injection molding ring, the anode injection molding weak guide plate, the anode substrate, the anode upper stop frame and the anode lower stop frame. The positive cover plate is electrically connected with the positive soft connecting sheet through the positive connecting sheet.
In a specific embodiment of the present invention, the negative cover plate includes a negative nano-injection terminal, a negative substrate, a negative upper stop frame and a negative lower stop frame; the negative electrode nanometer injection molding terminal sequentially penetrates through the negative electrode substrate, the negative electrode upper stopping frame and the negative electrode lower stopping frame. The negative electrode cover plate is formed and assembled based on a nanometer injection molding technology. The negative electrode nanometer injection molding terminal and the negative electrode substrate are welded into a whole, the upper negative electrode stop frame is fixed with the negative electrode substrate through the double faced adhesive tape, and the lower negative electrode stop frame is assembled with the upper negative electrode stop frame through the buckle.
The utility model discloses an in a specific embodiment, the terminal is moulded plastics to negative pole nanometer includes negative pole connection piece, negative pole nanometer ring and the negative pole insulation board of moulding plastics. The surface of the cathode nano injection molding ring is subjected to metal surface treatment, so that the cathode nano injection molding ring is hermetically assembled with the cathode connecting sheet and the cathode injection molding insulating plate. The negative pole connection piece is a bending structure formed by two extension faces, wherein one extension face sequentially penetrates through the negative pole nanometer injection molding ring and the negative pole injection molding insulation plate. Specifically, one of the extension surfaces sequentially penetrates through the negative electrode nano injection molding ring, the negative electrode injection molding insulating plate, the negative electrode substrate, the negative electrode upper stop frame and the negative electrode lower stop frame. The negative pole apron realizes the electricity through negative pole connection piece and negative pole flexible connecting piece and is connected.
The utility model discloses an among the concrete implementation mode, the positive (negative) utmost point ear of core passes through ultrasonic welding and is connected with positive (negative) utmost point flexible connection piece, and positive (negative) utmost point flexible connection piece and positive (negative) utmost point connection piece ultrasonic welding realize the circulation of electric current.
In a specific embodiment of the present invention, the metal shell may be an aluminum shell. The shell is spliced and welded in an ultra-frequency oscillation welding mode. A single piece of aluminum sheet may be punched directly, then bent and finally welded to form the shell including the side periphery of the core. And one end of the two end faces of the shell is welded with the positive cover plate in a laser mode, and the other end of the negative cover plate is welded with the negative cover plate in a laser mode, so that sealing is achieved.
The utility model discloses a square battery can regard as electric automobile's power battery.
The utility model discloses a square battery can effectively improve the volume utilization ratio of lithium cell in finite space, and then improves the continuation of the journey mileage, and reduce cost does benefit to the module modularization simultaneously.
Drawings
Fig. 1 is a schematic diagram of a battery structure according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a positive electrode cover plate structure in an embodiment of the present invention.
Fig. 3 is a schematic diagram of a structure of a negative electrode cover plate in an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of the positive electrode nano injection molding terminal in an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a negative electrode nano injection molding terminal in an embodiment of the present invention.
Fig. 6 is a schematic structural view of an upper and lower stopper frames according to an embodiment of the present invention.
Description of the main figures:
1. a positive electrode substrate; 2. a positive electrode connecting sheet; 3. a positive electrode nano injection molding ring; 4. the positive electrode is injection molded with a weak guide plate; 5. an explosion-proof valve; 6. an upper stop frame is arranged on the positive electrode; 7. a positive lower stop frame; 8. a positive electrode soft connecting sheet; 9. a PET insulating coating film; 10. an aluminum shell; 11. a negative electrode soft connecting sheet; 12. a negative electrode lower stop frame; 13. a negative electrode upper stop frame; 14. the negative pole is injected and molded with an insulating plate; 15. a negative electrode nano injection molding ring; 16. a negative electrode connecting sheet; 17. a negative electrode substrate; 18. and (6) winding cores.
Detailed Description
In order to clearly understand the technical features, objects and advantages of the present invention, the following detailed description is given to the technical solution of the present invention, but the technical solution of the present invention is not limited to the limit of the implementable range of the present invention.
Example 1
The present embodiment provides a prismatic battery having a structure as shown in fig. 1, the prismatic battery including:
a plurality of winding cores 18 connected in parallel;
a PET insulating coating film 9 for sealing and coating the winding core 18;
an aluminum case 10 outside the PET insulating coating film 9;
the positive electrode soft connecting piece 8 is connected with the positive electrode lug of the winding core 18, and the negative electrode soft connecting piece 11 is connected with the negative electrode lug of the winding core 18;
the positive cover plate is used for packaging the positive end of the winding core 18 and is electrically connected with the positive soft connecting sheet 9;
and the negative electrode cover plate is used for packaging the negative electrode end of the winding core 18 and is electrically connected with the negative electrode soft connecting sheet 11.
Wherein, the aluminum shell 10 is spliced and welded by adopting an over-frequency oscillation welding mode. Can directly punch out a whole aluminum sheet, then bend and finally weld into an aluminum shell wrapping the side periphery of the winding core. The shape of the aluminum case may be a standard rectangular parallelepiped as shown in fig. 1. One end of the two end faces of the aluminum shell 10 is laser-welded with the positive cover plate, and the other end of the two end faces of the aluminum shell is laser-welded with the negative cover plate, so that sealing is realized.
As shown in fig. 2, the positive cover plate includes a positive nano injection terminal, an explosion-proof valve 5, a positive substrate 1, a positive upper stop frame 6, and a positive lower stop frame 7. As shown in fig. 4, the anode nano injection molding terminal includes an anode connecting sheet 2, an anode nano injection molding ring 3 and an anode injection molding weak guide plate 4. The positive connecting piece 2 is a bending structure formed by two extension surfaces, wherein one extension surface sequentially penetrates through the positive nanometer injection molding ring 3 and the positive injection molding weak guide plate 4 to form a positive nanometer injection molding terminal. The extension surface of the positive connecting sheet 2 in the positive nano injection molding terminal sequentially passes through the explosion-proof valve 5, the positive substrate 1, the positive upper stop frame 6 and the positive lower stop frame 7 to form a positive cover plate.
Wherein, the positive pole apron is based on nanometer injection molding technique shaping equipment. The surface of the anode nano injection molding ring 3 is subjected to metal surface treatment, so that the anode nano injection molding ring is hermetically assembled with the anode connecting sheet 2 and the anode injection molding weak guide plate 4 to form an anode nano injection molding terminal. The anode nano injection molding terminal, the explosion-proof valve 5 and the anode substrate 1 are welded into a whole, the anode upper stop frame 6 is fixed with the anode substrate 1 through double faced adhesive tape, and the anode lower stop frame 7 is assembled with the anode upper stop frame 6 through a buckle.
The positive cover plate is electrically connected with the positive soft connecting sheet 8 through the positive connecting sheet 3.
As shown in fig. 3, the negative cover plate includes a negative nano injection terminal, a negative substrate 17, a negative upper stop bracket 13, and a negative lower stop bracket 12. As shown in fig. 5, the negative nano injection molding terminal includes a negative connecting sheet 16, a negative nano injection molding ring 15 and a negative injection molding insulating plate 14. The negative electrode connecting sheet 16 is a bent structure formed by two extending surfaces, wherein one extending surface sequentially penetrates through the negative electrode nanometer injection molding ring 15 and the negative electrode injection molding insulating plate 14 to form a negative electrode nanometer injection molding terminal. The extension surface of the negative electrode connecting sheet in the negative electrode nanometer injection molding terminal sequentially penetrates through the negative electrode substrate 17, the negative electrode upper stop frame 13 and the negative electrode lower stop frame 12 to form a negative electrode cover plate.
Wherein, the negative pole apron is based on nanometer injection molding technique shaping equipment. The surface of the negative electrode nanometer injection molding ring is subjected to metal surface treatment, so that the negative electrode nanometer injection molding ring is hermetically assembled with the negative electrode connecting sheet and the negative electrode injection molding insulating plate to form the negative electrode nanometer injection molding terminal. The negative electrode nanometer injection molding terminal and the negative electrode substrate 17 are welded into a whole, the negative electrode upper stop frame 13 is fixed with the negative electrode substrate 17 through double faced adhesive tape, and the negative electrode lower stop frame 12 is assembled with the negative electrode upper stop frame 13 through a buckle to form a negative electrode cover plate. The negative cover plate is electrically connected with the negative soft connecting piece 11 through the negative connecting piece 16.
As shown in fig. 6, the upper and lower stopper frames of the positive and negative electrodes are fixedly assembled by snap-fitting.
The panels of the anode substrate 1, the anode nano injection molding ring 3, the anode injection molding weak guide plate 4, the anode upper stop frame 6 and the anode lower stop frame 7 are of mutually adaptive hollow structures, so that the anode connecting piece 2 penetrates through the anode nano injection molding ring 3, the anode injection molding weak guide plate 4, the anode substrate 1, the anode upper stop frame 6 and the anode lower stop frame 7, and the fixed assembly of the anode cover plate is realized. The surfaces of the negative electrode base plate 17, the negative electrode lower stopping frame 12, the negative electrode upper stopping frame 13, the negative electrode injection molding insulating plate 14 and the negative electrode nanometer injection molding ring 15 are provided with mutually matched hollow structures, so that the negative electrode connecting sheet 16 penetrates through the negative electrode injection molding insulating plate 14, the negative electrode nanometer injection molding ring 15, the negative electrode upper stopping frame 13, the negative electrode lower stopping frame 12 and the negative electrode base plate 17, and the fixed assembly of the negative electrode cover plate is realized.
In the square battery shown in fig. 1, the positive (negative) tab of the winding core 18 is connected to the positive (negative) flexible connecting sheet by ultrasonic welding, and the positive (negative) flexible connecting sheet is ultrasonically welded to the positive (negative) flexible connecting sheet to realize the circulation of current.
Claims (10)
1. A prismatic battery, characterized in that the prismatic battery comprises:
the core bodies are connected in parallel and are winding cores or stacked cores;
an insulating coating film hermetically coating the core;
a metal case outside the insulating coating film;
the positive electrode soft connecting sheet is connected with the positive electrode lug of the core body, and the negative electrode soft connecting sheet is connected with the negative electrode lug of the core body;
the positive cover plate is used for packaging the positive end of the core body and is electrically connected with the positive flexible connecting sheet;
and the negative cover plate is used for packaging the negative end of the core body and is electrically connected with the negative flexible connecting sheet.
2. The square battery according to claim 1, wherein the positive cover plate comprises a positive nano injection molding terminal, an explosion-proof valve, a positive substrate, a positive upper stop frame and a positive lower stop frame; the positive electrode nanometer injection molding terminal sequentially penetrates through the explosion-proof valve, the positive electrode substrate, the positive electrode upper stop frame and the positive electrode lower stop frame.
3. The square battery of claim 2, wherein the positive nano injection molded terminal comprises a positive connection piece, a positive nano injection molded ring and a positive injection molded weak guide plate.
4. The square battery according to claim 3, wherein the positive connecting sheet is a bent structure formed by two extension surfaces, wherein one extension surface sequentially penetrates through the positive nano injection molding ring and the positive injection molding weak guide plate.
5. The square battery according to claim 1, wherein the negative cover plate comprises a negative nano injection terminal, a negative substrate, a negative upper stop frame and a negative lower stop frame; the negative electrode nanometer injection molding terminal sequentially penetrates through the negative electrode substrate, the negative electrode upper stopping frame and the negative electrode lower stopping frame.
6. The square battery of claim 5, wherein the negative nano injection molded terminal comprises a negative connection tab, a negative nano injection molded ring, and a negative injection molded insulator plate.
7. The square battery according to claim 6, wherein the negative electrode connecting sheet is a bent structure formed by two extension surfaces, wherein one extension surface sequentially penetrates through the negative electrode nano injection molding ring and the negative electrode injection molding insulating plate.
8. The square battery according to claim 1, wherein the positive cover plate is electrically connected to the positive flexible connecting plate through the positive connecting plate.
9. The square battery of claim 1, wherein the negative cover plate is electrically connected to the negative flexible tab through a negative tab.
10. An electric vehicle comprising the prismatic battery according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021942769.2U CN212934723U (en) | 2020-09-08 | 2020-09-08 | Square battery and electric automobile comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021942769.2U CN212934723U (en) | 2020-09-08 | 2020-09-08 | Square battery and electric automobile comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212934723U true CN212934723U (en) | 2021-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021942769.2U Active CN212934723U (en) | 2020-09-08 | 2020-09-08 | Square battery and electric automobile comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212934723U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115377619A (en) * | 2022-08-09 | 2022-11-22 | 合肥国轩高科动力能源有限公司 | Battery cell with lugs at two sides, battery and assembling method |
-
2020
- 2020-09-08 CN CN202021942769.2U patent/CN212934723U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115377619A (en) * | 2022-08-09 | 2022-11-22 | 合肥国轩高科动力能源有限公司 | Battery cell with lugs at two sides, battery and assembling method |
| CN115377619B (en) * | 2022-08-09 | 2024-04-16 | 合肥国轩高科动力能源有限公司 | Battery with two side tabs and assembling method |
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