CN214672853U - Soft package lithium ion battery module - Google Patents
Soft package lithium ion battery module Download PDFInfo
- Publication number
- CN214672853U CN214672853U CN202120378243.4U CN202120378243U CN214672853U CN 214672853 U CN214672853 U CN 214672853U CN 202120378243 U CN202120378243 U CN 202120378243U CN 214672853 U CN214672853 U CN 214672853U
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- CN
- China
- Prior art keywords
- lithium ion
- current collecting
- collecting plate
- ion battery
- bracket
- 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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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium Ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 79
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 79
- 238000003860 storage Methods 0.000 claims abstract description 37
- 230000017525 heat dissipation Effects 0.000 claims abstract description 33
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 238000000926 separation method Methods 0.000 claims abstract description 3
- 238000002955 isolation Methods 0.000 claims description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 239000004831 Hot glue Substances 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 5
- 238000001746 injection moulding Methods 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 239000011810 insulating material Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 5
- 239000006185 dispersion Substances 0.000 abstract 1
- 238000003825 pressing Methods 0.000 description 4
- 238000007906 compression Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 230000002035 prolonged Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000002349 favourable Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005070 sampling Methods 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
The utility model particularly discloses a can satisfy high-power charge-discharge, do benefit to again in groups, and have the soft packet of lithium ion battery module of good heat radiation structure and security. The soft package lithium ion storage battery module comprises a support, a heat dissipation plate, a soft package lithium ion storage battery, an elastic separation sheet, a positive current collecting plate assembly and a negative current collecting plate assembly. Design and sticky technique through heating panel, support can effectual protection, fixed soft packet of lithium ion battery, guarantee again that soft packet of lithium ion battery module has good heat dispersion. Through the elastic spacing block between soft package lithium ion battery, can effectively balance the thickness change of soft package lithium ion battery in the use, increase of service life improves the security simultaneously. Through the design of the positioning connection structure on the support, the design of the wiring groove and the design of the line clamping fixing hole, the wiring and the fixing of the system after the soft package lithium ion storage battery module is grouped are greatly facilitated.
Description
Technical Field
The utility model relates to a soft packet of lithium ion battery module field, in particular to soft packet of lithium ion battery module.
Background
The lithium ion battery is a novel high-energy battery developed in the early nineties of the twentieth century and has the characteristics of high specific energy, high working voltage, long cycle life, small self-discharge, no maintenance and the like. Currently, the mainstream lithium battery packaging forms mainly include three types, namely cylindrical, square metal shell and soft package packaging. The soft package lithium ion storage battery is generally packaged by an aluminum plastic film, and has the advantages of light weight, large capacity, small internal resistance, flexible design, good cycle performance and the like. The aluminum-plastic film on the surface of the soft package lithium ion storage battery is weak in mechanical strength and is easy to damage; therefore, after the soft-package lithium ion storage batteries are connected in series and in parallel into a group, the soft-package lithium ion storage batteries are loaded into the module shell to protect the batteries. The soft package lithium ion battery is electrically connected by screw compression joint or laser welding. The screw crimping mode has large contact resistance and the screw has the risk of loosening, so that the requirements of high-power charging and discharging and dynamic use are difficult to meet. The laser welding mode has small contact resistance and can meet the requirements of high-power charging and discharging, but the process is complex and the equipment requirement is high.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the soft package lithium ion storage battery module can meet high-power charging and discharging, is favorable for grouping, and has a good heat dissipation structure and safety.
For solving the technical problem the utility model discloses the technical scheme who adopts is: the soft package lithium ion storage battery module comprises a bracket, a heat dissipation plate, a soft package lithium ion storage battery, an elastic separation sheet, a positive current collecting plate assembly and a negative current collecting plate assembly; the soft package lithium ion storage batteries are combined in a parallel connection mode, the heat dissipation plate is provided with a pit for accommodating the soft package lithium ion storage batteries, the elastic isolation sheet is arranged between the soft package lithium ion storage batteries, and the soft package lithium ion storage batteries and the elastic isolation sheet as well as the soft package lithium ion storage batteries and the heat dissipation plate are fixedly bonded; the bracket is provided with a groove for fixing the positive current collecting plate assembly and the negative current collecting plate assembly, the positive current collecting plate assembly and the negative current collecting plate assembly are fixedly arranged on the bracket, and the bracket is fixed at the upper end of the heat dissipation plate; the connection of the positive lug and the positive current collecting plate assembly of the soft package lithium ion storage battery and the connection of the negative lug and the negative current collecting plate assembly are both laser welded.
Furthermore, the bracket is provided with a spigot and a boss which are matched with the heat dissipation plate, and the heat dissipation plate is provided with a clamping groove for fixing the bracket; the top of the heat radiation board matches with the spigot of the bracket, and the slot of the heat radiation board is connected with the boss of the bracket.
Furthermore, the support is provided with a wiring groove and a limiting boss, the limiting boss is arranged on two sides of the wiring groove, and a temperature sensor mounting hole is formed in the wiring groove.
Further, a fixing groove is formed in the support.
Furthermore, the bracket is provided with a wire clamp fixing hole and a weight-reducing through hole.
Furthermore, the front and the back of the bracket are both provided with positioning connecting structures, each positioning connecting structure comprises a positioning groove and a positioning boss, the positioning groove is arranged on the front of the bracket on one side of the top of the bracket, and the positioning bosses are arranged on the back of the bracket along the axial direction of the positioning grooves; on the other side of the top of the bracket, a positioning groove is arranged on the back, and a positioning boss is arranged on the front of the bracket along the axial direction of the positioning groove; two adjacent supports realize the location through above-mentioned location connection structure and connect.
Furthermore, the heat dissipation plate is made of heat conduction materials, and the surface of the heat dissipation plate is provided with an insulating layer; the elastic isolation sheet is made of an insulating material; the material that has certain compression volume is selected for use to the elastic isolation piece for the thickness change of soft packet of lithium ion battery in the use of balance, increase of service life, the insulating material that elastic isolation piece chooseed for use to have high temperature resistant, fire-retardant, coefficient of heat conductivity is low, and the security as between the lithium ion battery keeps apart, improves the security of soft packet of lithium ion battery module.
Further, the soft package lithium ion storage battery and the elastic isolating sheet are fixed, and the soft package lithium ion storage battery and the heat dissipation plate are fixed and adhered by spraying pressure-sensitive hot melt adhesive on the contact surface.
Further, the positive current collecting plate assembly comprises a current collecting plate and a press rivet nut, the current collecting plate of the positive current collecting plate assembly is an aluminum alloy plate stamping bending forming structural part, and the surface of the current collecting plate assembly is provided with a nickel plating layer; the negative current collecting plate assembly comprises a current collecting plate and a pressure riveting nut, wherein the current collecting plate of the negative current collecting plate assembly is a red copper plate stamping bending forming piece, and the surface of the current collecting plate is provided with a nickel-plated layer; and the press rivet nut of the positive current collecting plate assembly and the press rivet nut of the negative current collecting plate assembly are used for fixing the current collecting plates of the soft package lithium ion storage battery modules in series-parallel connection.
Furthermore, the bracket is an injection molding piece, and the positive current collecting plate assembly and the negative current collecting plate assembly are fixed on the bracket during injection molding.
The utility model has the advantages that: the soft package lithium ion storage battery module can effectively protect and fix the soft package lithium ion storage battery, and is bonded by adopting a pressure-sensitive hot melt adhesive, so that the soft package lithium ion storage battery module can meet the requirement of long-term dynamic use; the soft package lithium ion storage battery is connected with the positive and negative collector plate assemblies by laser welding, so that the contact resistance is greatly reduced, and the use requirements of high-power charge and discharge can be met; the elastic spacing pieces are adopted among the soft package lithium ion batteries, so that the thickness change of the soft package lithium ion batteries in the use process can be effectively balanced, the service life is prolonged, and the safety is improved; the positioning connection structure arranged on the surface of the soft package lithium ion storage battery module enables the soft package lithium ion storage battery modules to be well positioned and connected; the wiring groove enables the soft package lithium ion storage battery modules to be conveniently fixed and protected after being grouped; the heat dissipation plate is made of an aluminum plate with an anodic oxidation insulating layer on the surface, so that the soft package lithium ion storage battery module has good heat dissipation and insulation characteristics.
Drawings
Fig. 1 is an implementation structure schematic diagram of a middle soft package lithium ion battery module according to the present invention;
labeled in fig. 1: heat dissipation plate 100, support 200, soft-packaged lithium ion battery 300, elastic separator 400, positive collector plate assembly 500, and negative collector plate assembly 600.
Fig. 2 is a schematic view of an embodiment of a heat dissipation plate of the present invention;
labeled in fig. 2: a pit 101 and a card slot 102.
FIG. 3 is a schematic diagram of an embodiment of a bracket according to the present invention;
labeled in fig. 3: the cable clamp comprises a groove 201, a spigot 202, a boss 203, a wiring groove 204, a limiting boss 205, a temperature sensor mounting hole 206, a fixing groove 207, a cable clamp fixing hole 208, a weight-reducing through hole 209, a positioning groove 210 and a positioning boss 211.
Fig. 4 is a schematic view of an embodiment of the current collecting plate assembly of the present invention;
labeled in fig. 4: collector plate 501, clinch nut 502.
Detailed Description
The present invention will be further explained with reference to the drawings and the embodiments.
As shown in fig. 1 to 4, the present invention includes a heat dissipating plate 100, a bracket 200, a soft-packed lithium ion battery 300, an elastic spacer 400, a positive current collecting plate assembly 500, and a negative current collecting plate assembly 600; soft package lithium ion battery 300 all adopts parallelly connected mode combination, and heating panel 100 is equipped with the pit 101 that holds soft package lithium ion battery 300 and is used for fixed bolster 200 draw-in groove 102, and elastic spacer 400 is arranged in between soft package lithium ion battery 300, and soft package lithium ion battery 300 and elastic spacer 400 and soft package lithium ion battery 300 bond through contact surface spraying pressure-sensitive type hot melt adhesive with heating panel 100. The pits 101 of the heat dissipation plate 100 can effectively protect and fix the soft-package lithium ion storage battery 300, and the pressure-sensitive hot melt adhesive bonding process preferentially adopted can meet the requirement of long-term dynamic use.
As shown in fig. 3, a groove 201 for fixing a positive current collecting plate assembly 500 and an anode current collecting plate assembly 600 is provided on the holder 200, and the positive current collecting plate assembly 500 and the anode current collecting plate assembly 600 are fixedly installed in the groove 201; the bracket 200 is provided with a spigot 202 and a boss 203 which are used for matching with the heat dissipation plate; the heat dissipation plate 100 is provided with a slot 102 for fixing the bracket 200, the upper end of the heat dissipation plate 100 is matched with the spigot 202 on the bracket 200, and the slot 102 on the heat dissipation plate 100 is connected with the boss 203 on the bracket 200 in a buckling manner. A fixing groove 207 is formed on the bracket 200, and the isolation block is fixed through the fixing groove 207 to form physical isolation between the positive electrode and the negative electrode; the bracket 200 is provided with a wire clamp fixing hole 208 for fixing a wire clamp; the support 200 is provided with a positioning connection structure, the positioning connection structure comprises a positioning groove 210 and a positioning boss 211, the positioning groove 210 is arranged on the front side of the top of the support 200, and the positioning boss 211 is arranged on the back side of the support along the axial direction of the positioning groove 210; on the other side of the top of the bracket 200, a positioning groove 210 is arranged on the back, and a positioning boss 211 is arranged on the front of the bracket 200 along the axial direction of the positioning groove 210; the adjacent two brackets 200 are connected in a positioning manner through the positioning connection structure. Through the positioning connection structure arranged on the surface, the soft package lithium ion storage battery modules can be well positioned and connected.
The connection of the positive tab and the positive collector plate assembly 500 and the connection of the negative tab and the negative collector plate assembly 600 of the soft-package lithium ion storage battery 300 are all laser welded, so that the contact resistance is greatly reduced, and the use requirements of high-power charge and discharge can be met.
The top of the bracket 200 is provided with a wiring groove 204 and a limiting boss 205, the limiting boss 205 is arranged at two sides of the wiring groove 204, and a temperature sensor mounting hole 206 is arranged in the wiring groove 204; make soft packet of lithium ion battery module can make things convenient for the fixed and protection of sampling pencil after in groups on the one hand, on the other hand is temperature sensor easy to assemble.
As shown in fig. 1, the elastic spacer 400 is arranged between the soft-package lithium ion batteries 300, so that the thickness change of the soft-package lithium ion batteries 300 in the using process can be effectively balanced, the service life is prolonged, and the safety is improved. The elastomeric spacer 400 preferably comprises an insulating material having a compression capacity, high temperature resistance, flame retardancy, and low thermal conductivity. The heat dissipation plate 100 is made of a material having a good thermal conductivity and has an insulating layer on its surface. The heat dissipation plate 100 is preferably made of an aluminum alloy material with an insulating layer on the surface, so that the soft package lithium ion battery module is ensured to have good heat dissipation and insulation.
As shown in fig. 4, each of the positive and negative electrode current collecting plate assemblies includes a current collecting plate 501 and a rivet pressing nut 502, the rivet pressing nut 502 is used to fix the current collecting plates of the soft pack lithium ion battery module in series-parallel connection, and in the implementation, the rivet pressing nut 502 is fixed to the current collecting plate 501 by means of rivet pressing. In addition, in order to facilitate the manufacturing and ensure the product performance, the current collecting plate 501 of the positive current collecting plate assembly 500 is preferably an aluminum alloy plate stamping bending forming structural member, and the surface of the current collecting plate is provided with a nickel plating layer; current collecting plate 501 of anode current collecting plate assembly 600 is preferably a copper plate press-bent molding, and has a nickel-plated layer on the surface.
For convenient preparation and assembly, the preferred injection moulding piece of support 200 in the utility model, fix anodal current collector subassembly 500 and negative current collector subassembly 600 on support 200 when moulding plastics. In order to simplify the structure and reduce the weight, the support 200 is provided with a plurality of lightening through holes 209 which are respectively arranged.
Claims (10)
1. Softly packaged lithium ion battery module, including heating panel (100), support (200), softly packaged lithium ion battery (300), elasticity spacer (400), anodal current collecting plate subassembly (500) and negative pole current collecting plate subassembly (600), softly packaged lithium ion battery (300) all adopt parallelly connected mode combination, its characterized in that: the heat dissipation plate (100) is provided with a pit (101) for accommodating the soft package lithium ion storage battery (300), the elastic isolation sheet (400) is arranged between the soft package lithium ion storage batteries (300), and the soft package lithium ion storage battery (300) and the elastic isolation sheet (400) as well as the soft package lithium ion storage battery (300) and the heat dissipation plate (100) are fixed through bonding;
the support (200) is provided with a groove (201) for fixing the positive current collecting plate assembly (500) and the negative current collecting plate assembly (600), the positive current collecting plate assembly (500) and the negative current collecting plate assembly (600) are fixedly arranged on the support (200), and the support (200) is fixed on the heat dissipation plate (100);
the positive tab of the soft package lithium ion storage battery (300) is connected with the positive current collecting plate assembly (500), and the negative tab is connected with the negative current collecting plate assembly (600) through laser welding.
2. The pouch lithium ion battery module of claim 1, wherein: the bracket (200) is provided with a spigot (202) and a boss (203) which are used for being matched with the heat dissipation plate (100), and the heat dissipation plate (100) is provided with a clamping groove (102) for fixing the bracket (200); the upper end of the heat dissipation plate (100) is matched with the spigot (202) on the bracket (200), and the clamping groove (102) on the heat dissipation plate (100) is connected with the boss (203) on the bracket (200) in a buckling mode.
3. The pouch lithium ion battery module of claim 1, wherein: the top of the support (200) is provided with a wiring groove (204) and a limiting boss (205), the limiting boss (205) is arranged on two sides of the wiring groove (204), and a temperature sensor mounting hole (206) is arranged in the wiring groove (204).
4. The pouch lithium ion battery module of claim 1, wherein: the bracket (200) is provided with a fixing groove (207).
5. The pouch lithium ion battery module of claim 1, wherein: the bracket (200) is provided with a wire clamp fixing hole (208) and a weight-reducing through hole (209).
6. The pouch lithium ion battery module of claim 1, wherein: the front and the back of the bracket (200) are both provided with positioning connecting structures, and each positioning connecting structure comprises a positioning groove (210) and a positioning boss (211); on one side of the top of the bracket (200), a positioning groove (210) is arranged on the front side, and a positioning boss (211) is arranged on the back side of the bracket (200) along the axial direction of the positioning groove (210); on the other side of the top of the bracket (200), a positioning groove (210) is arranged on the back, and a positioning boss (211) is arranged on the front of the bracket (200) along the axial direction of the positioning groove (210); and the two adjacent brackets (200) are connected in a positioning way through the positioning connecting structure.
7. The pouch lithium ion battery module of claim 1, wherein: the heat dissipation plate (100) is made of heat conduction materials, and an insulating layer is arranged on the surface of the heat dissipation plate (100); the elastic spacer (400) is made of an insulating material.
8. The pouch lithium ion battery module of claim 1, wherein: the soft package lithium ion storage battery (300) is fixed with the elastic separation sheet (400) and the soft package lithium ion storage battery (300) is fixed with the heat dissipation plate (100) through spraying pressure-sensitive hot melt adhesive on the contact surface for bonding.
9. The pouch lithium ion battery module defined in any one of claims 1-8, wherein: the positive current collecting plate assembly (500) comprises a current collecting plate (501) and a press rivet nut (502), wherein the current collecting plate (501) of the positive current collecting plate assembly (500) is an aluminum alloy plate stamping bending forming structural part, and the surface of the current collecting plate assembly is provided with a nickel plating layer; the negative current collecting plate assembly (600) comprises a current collecting plate (501) and a press riveting nut (502), wherein the current collecting plate (501) of the negative current collecting plate assembly (600) is a red copper plate stamping bending forming piece, and the surface of the current collecting plate is provided with a nickel-plated layer; and the press rivet nut (502) of the positive current collecting plate assembly (500) and the press rivet nut (502) of the negative current collecting plate assembly (600) are used for fixing the current collecting plates of the soft package lithium ion battery modules connected in series and in parallel.
10. The pouch lithium ion battery module defined in any one of claims 1-8, wherein: the bracket (200) is an injection molding piece, and the positive current collecting plate assembly (500) and the negative current collecting plate assembly (600) are fixed on the bracket (200) during injection molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120378243.4U CN214672853U (en) | 2021-02-05 | 2021-02-05 | Soft package lithium ion battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120378243.4U CN214672853U (en) | 2021-02-05 | 2021-02-05 | Soft package lithium ion battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214672853U true CN214672853U (en) | 2021-11-09 |
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ID=78448112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120378243.4U Active CN214672853U (en) | 2021-02-05 | 2021-02-05 | Soft package lithium ion battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214672853U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114695968A (en) * | 2022-06-01 | 2022-07-01 | 四川新能源汽车创新中心有限公司 | Lithium ion battery with NP ratio less than 1 and preparation method thereof |
-
2021
- 2021-02-05 CN CN202120378243.4U patent/CN214672853U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114695968A (en) * | 2022-06-01 | 2022-07-01 | 四川新能源汽车创新中心有限公司 | Lithium ion battery with NP ratio less than 1 and preparation method thereof |
| CN114695968B (en) * | 2022-06-01 | 2022-09-02 | 四川新能源汽车创新中心有限公司 | Lithium ion battery with NP ratio less than 1 and preparation method thereof |
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