CN111048709A - Frame assembly for cylindrical battery pack based on welding-free technology - Google Patents
Frame assembly for cylindrical battery pack based on welding-free technology Download PDFInfo
- Publication number
- CN111048709A CN111048709A CN201811192384.6A CN201811192384A CN111048709A CN 111048709 A CN111048709 A CN 111048709A CN 201811192384 A CN201811192384 A CN 201811192384A CN 111048709 A CN111048709 A CN 111048709A
- Authority
- CN
- China
- Prior art keywords
- frame assembly
- battery pack
- welding
- insulating
- pressing plate
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- 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.)
- Pending
Links
- 238000005516 engineering process Methods 0.000 title claims abstract description 14
- 238000003825 pressing Methods 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims description 13
- 238000003466 welding Methods 0.000 claims description 10
- 238000001746 injection moulding Methods 0.000 claims 2
- 210000000078 claw Anatomy 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 238000002844 melting Methods 0.000 claims 1
- 230000008018 melting Effects 0.000 claims 1
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000012827 research and development 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
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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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention relates to a welding-free technology-based frame assembly for a cylindrical battery pack, which is integrated by a main body insulating frame for fixing single battery cells, a conductive elastic contact piece and an insulating pressing plate, wherein a standard battery pack is formed by fastening an upper frame assembly, a lower frame assembly and a plurality of cylindrical single battery cells, and a series-parallel connection structure in the battery pack can be adjusted according to design requirements. The frame assembly has the remarkable advantages of light weight, low cost, high reliability and the like, and can be widely applied to industries such as electric bicycles, AGV and balance cars.
Description
Technical Field
The invention discloses a welding-free technology-based frame assembly for a cylindrical battery pack, which is suitable for series-parallel combination of a plurality of single cylindrical battery cells, and the battery pack formed by the combination is suitable for industries such as electric bicycles, AGV and balance cars.
Background
The lithium ion cylindrical battery which is prevalent in the digital industry has the advantages of perfect industrial foundation, reasonable cost, reliable quality, good consistency and the like, is still widely applied to the new energy industry and the electric bicycle industry, and the existing large vehicle enterprises and PACK manufacturer enterprises take the cylindrical battery PACK service as the enterprise core service and have achieved remarkable achievements in the aspects of product research and development and practical application.
Although the cylindrical battery PACK is widely applied, the PACK combination technology used by most enterprises is still the traditional welding process, and although different production processes are provided for different battery PACKs in application occasions, such as an initial resistance welding process, a subsequent laser welding process and a current aluminum wire ultrasonic welding process, the original defects of the welding process cannot be avoided: namely, the welding process is to perform destructive combination on the single batteries, potential safety hazards and quality defects are easy to occur in the production or use process, and in order to ensure the product quality, enterprises often have high requirements on the production process and large input equipment cost and operation cost.
The welding-free technology adopts the conductive elastic contact piece to conduct with the positive electrode or the negative electrode of the battery in a contact mode, so that the welding-free combination of the battery is realized, the original defects of a welding process can be avoided, and the characteristics of reliable product performance, obvious cost advantage and the like are realized.
Compared with the battery pack related to the CN206471408U patent and the integrated frame assembly related to the CN206961892U patent, the frame assembly for the cylindrical battery pack related to the invention cancels the conductive bus plate, and the conductive elastic contact pieces are directly arranged in the frame assembly, so that the forming process of the frame assembly is improved, the battery pack has lighter weight, lower cost and more attractive appearance, and is convenient to be widely applied to industries of electric bicycles, AGVs and balance cars which have more strict requirements on cost and weight.
Disclosure of Invention
The invention provides a welding-free technology-based frame assembly for a cylindrical battery pack, which is characterized in that a conductive elastic contact piece (202) is arranged between an insulating support (201) and an insulating pressing plate (203), and the insulating support (201) and the insulating pressing plate (203) are attached and fixed. Two frame assemblies are used as the upper frame assembly and the lower frame assembly, the battery pack is assembled in the upper frame assembly and the lower frame assembly, and the upper frame assembly and the lower frame assembly are fixed to form the battery pack module.
Preferably, the conductive elastic contact piece (202) is embedded between the insulating support (201) and the insulating pressing plate (203) and is formed through ultrasonic welding, and a plurality of hole sites are formed in the body of the conductive elastic contact piece to be positioned and assembled with positioning pins on the insulating support (201).
Preferably, the insulating pressing plate (203) and the tip end face of the insulating support (201) with the height protruding out of the surface are welded and fixed in an ultrasonic mode by using the side plate face with the concave structure, and finally the insulating support (201), the conductive elastic contact piece (202) and the insulating pressing plate (203) are integrally formed through ultrasonic welding.
The insulating pressing plate (203) can be made of an insulating material made of a common plastic material according to requirements, and also can be made of a composite material with higher mechanical strength, electrical pressure resistance or temperature resistance and flame retardance, and the insulating pressing plate (203) can be only used as an insulating pressing plate of the battery pack and also can be a part of an outer packaging shell of the whole battery pack.
The invention relates to a frame component for a cylindrical battery pack, which is used for placing a plurality of single cylindrical batteries (1) which need to be connected in series and in parallel in a lower frame component (2) as required when the battery pack is assembled into a group, assembling an upper frame component (2) at the upper end of the batteries, and fixing the upper frame component and the lower frame component in a screw and nut fastening mode.
Drawings
Fig. 1 is a frame assembly for a cylindrical battery pack based on a welding-free technique.
Fig. 2 is an exploded view of a frame assembly for a cylindrical battery pack based on a welding-free technology.
Fig. 3 is a battery pack assembled with a frame assembly for a cylindrical battery pack based on a welding-free technique.
Fig. 4 is a sectional view of a battery pack assembled with a frame assembly for a cylindrical battery pack based on a welding-free technique.
Detailed Description
The present invention is further described with reference to fig. 3 and 4, but the scope of protection of the present invention is not limited thereto, and the present embodiment is a battery pack for an electric bicycle assembled by the frame assembly, and the structure of the battery pack is as follows: 5P13S, the electrical model is 48V10Ah, and is matched with an independent 48V30A ternary lithium ion battery protection plate (3), the upper frame assembly related to the present case is composed of a group of upper insulating supports (201), 7 groups of upper conductive elastic contact pieces (202) and an upper insulating pressing plate (203), wherein the 7 groups of upper conductive elastic contact pieces (202) comprise 1 group of conductive elastic contact pieces with 5 claw-shaped structures and 6 groups of conductive elastic contact pieces with 10 claw-shaped structures, the lower frame assembly related to the present case is composed of a group of lower insulating supports (201), 7 groups of lower conductive elastic contact pieces (202) and a lower insulating pressing plate (203), wherein the 7 groups of lower conductive elastic contact pieces (202) comprise 1 group of conductive elastic contact pieces with 5 claw-shaped structures and 6 groups of conductive elastic contact pieces with 10 claw-shaped structures, and the single battery (1) related to the present case, the type is a ternary system 18650-3.6V2Ah, after the upper and lower frame assemblies are assembled with the battery, the upper and lower frame assemblies are fastened through bolts and nuts, and finally the conducting strips led out from each group of conducting elastic contact strips in the battery pack are fixed on the protection plate (3), so that the battery pack which can be put into practical use is formed, as shown in figure 3.
Claims (7)
1. The utility model provides a frame assembly for cylindrical group battery based on exempt from welding technique for cylinder electricity core, cylinder battery cluster, parallelly connected equipment, its characterized in that: the frame assembly is fixed between the insulating support and the insulating pressing plate by a plurality of groups of conductive elastic contact pieces with a plurality of claw-shaped structures; the end face of the insulating support is provided with a through hole, so that the convex claw of the conductive elastic contact piece is contacted with the positive electrode or the negative electrode of the battery cell installed in the insulating support through the through hole of the insulating support; the insulating pressing plate and the insulating support are fixed, a pillar structure is arranged on the end face of the frame assembly, which is used for installing the battery, and the upper frame assembly and the lower frame assembly are fixed through the pillar structure when the battery pack is assembled.
2. The welding-free technology-based frame assembly for a cylindrical battery pack according to claim 1, wherein: and the insulating pressing plate and the insulating support are fixed through ultrasonic hot melting forming.
3. The welding-free technology-based frame assembly for a cylindrical battery pack according to claim 1, wherein: and the insulating pressing plate and the insulating support are fixed through screw fastening.
4. The welding-free technology-based frame assembly for a cylindrical battery pack according to claim 1, wherein: the insulating pressing plate and the insulating support are fixed through clamping or integrated injection molding.
5. The welding-free technology-based frame assembly for a cylindrical battery pack according to claim 1, wherein: and the insulating pressing plate and the insulating support are fixed through integrated injection molding.
6. The welding-free technology-based frame assembly for a cylindrical battery pack according to claim 1, wherein: when the frame assembly is used for assembling the battery pack, the upper frame assembly and the lower frame assembly fix the strut structure in a bolt and nut fastening mode.
7. The welding-free technology-based frame assembly for a cylindrical battery pack according to claim 1, wherein: the conductive elastic contact piece is fixed in the frame assembly in a zero-gap attaching mode through the body part outside the convex claw-shaped structure, the insulating pressing plate and the insulating support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811192384.6A CN111048709A (en) | 2018-10-13 | 2018-10-13 | Frame assembly for cylindrical battery pack based on welding-free technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811192384.6A CN111048709A (en) | 2018-10-13 | 2018-10-13 | Frame assembly for cylindrical battery pack based on welding-free technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111048709A true CN111048709A (en) | 2020-04-21 |
Family
ID=70230061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811192384.6A Pending CN111048709A (en) | 2018-10-13 | 2018-10-13 | Frame assembly for cylindrical battery pack based on welding-free technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111048709A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114284616A (en) * | 2021-12-31 | 2022-04-05 | 苏州科易新动力科技有限公司 | Welding-free battery module |
| DE102022118634A1 (en) | 2022-07-26 | 2024-02-01 | Bayerische Motoren Werke Aktiengesellschaft | Electrical energy storage for a motor vehicle and motor vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110008667A1 (en) * | 2009-07-09 | 2011-01-13 | Samsung Sdi Co., Ltd. | Battery pack including a plurality of unit cells |
| US20150086823A1 (en) * | 2012-03-12 | 2015-03-26 | Chung Peng Liew | Non-welded battery module |
| CN204614828U (en) * | 2015-01-21 | 2015-09-02 | 合肥国轩高科动力能源股份公司 | A kind of cylinder type lithium battery modular structure |
| CN206471408U (en) * | 2017-01-08 | 2017-09-05 | 杭州波谱莱新能源科技有限公司 | A kind of conductive cylinder manifold and the cylindrical battery group based on solderless connection technology |
| CN206961892U (en) * | 2017-04-14 | 2018-02-02 | 杭州波谱莱新能源科技有限公司 | A kind of cylindrical battery core integrated frame component |
-
2018
- 2018-10-13 CN CN201811192384.6A patent/CN111048709A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110008667A1 (en) * | 2009-07-09 | 2011-01-13 | Samsung Sdi Co., Ltd. | Battery pack including a plurality of unit cells |
| US20150086823A1 (en) * | 2012-03-12 | 2015-03-26 | Chung Peng Liew | Non-welded battery module |
| CN204614828U (en) * | 2015-01-21 | 2015-09-02 | 合肥国轩高科动力能源股份公司 | A kind of cylinder type lithium battery modular structure |
| CN206471408U (en) * | 2017-01-08 | 2017-09-05 | 杭州波谱莱新能源科技有限公司 | A kind of conductive cylinder manifold and the cylindrical battery group based on solderless connection technology |
| CN206961892U (en) * | 2017-04-14 | 2018-02-02 | 杭州波谱莱新能源科技有限公司 | A kind of cylindrical battery core integrated frame component |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114284616A (en) * | 2021-12-31 | 2022-04-05 | 苏州科易新动力科技有限公司 | Welding-free battery module |
| CN114284616B (en) * | 2021-12-31 | 2024-07-02 | 苏州科易新动力科技有限公司 | Welding-free battery module |
| DE102022118634A1 (en) | 2022-07-26 | 2024-02-01 | Bayerische Motoren Werke Aktiengesellschaft | Electrical energy storage for a motor vehicle and motor vehicle |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20200421 |