CN111063855A - Unilateral welding method for cylindrical battery cell - Google Patents
Unilateral welding method for cylindrical battery cell Download PDFInfo
- Publication number
- CN111063855A CN111063855A CN201811208784.1A CN201811208784A CN111063855A CN 111063855 A CN111063855 A CN 111063855A CN 201811208784 A CN201811208784 A CN 201811208784A CN 111063855 A CN111063855 A CN 111063855A
- Authority
- CN
- China
- Prior art keywords
- battery cell
- battery
- aluminum wire
- busbar
- welding
- 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.)
- Pending
Links
- 238000003466 welding Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 22
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 21
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 20
- 230000000694 effects Effects 0.000 abstract description 4
- 230000017525 heat dissipation Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Images
Classifications
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- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/521—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material
- H01M50/522—Inorganic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
- H01R43/0207—Ultrasonic-, H.F.-, cold- or impact welding
-
- 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)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention provides a unilateral welding method of a cylindrical battery cell, which comprises a plurality of battery cells, a busbar, an upper bracket, a lower bracket, an aluminum wire, a battery cell anode, a battery cell cathode and a battery cell edge, wherein the plurality of battery cells are orderly arranged between the upper bracket and the lower bracket to form a battery module, the battery cell anode is fixedly connected with the upper bracket, and the battery cell cathode is fixedly connected with the lower bracket. The busbar is fixed on the upper support, and the positive electrode of the battery cell is connected with the busbar through the aluminum wire in a welding manner. According to the battery cell arrangement mode, the bus bar is only assembled on one surface of the positive electrode, and the bus bar is respectively welded with the positive electrode of the battery cell and the edge of the battery cell through the aluminum wire, so that the battery cells are connected in series and in parallel, the use of materials such as the bus bar and the aluminum wire can be reduced, the welding workload can be reduced, and the heat dissipation effect of the battery pack can be further improved.
Description
Technical Field
The invention relates to a welding method of a new energy power battery system, in particular to a unilateral welding method of a cylindrical battery cell.
Background
With the continuous development of the PACK process, the connection mode is continuously improved from the traditional lead soldering process, the nickel sheet spot welding process, the laser welding process and the ultrasonic aluminum wire welding process. The traditional welding process is time-consuming and easy to fail, and is difficult to test whether the connection between batteries and conductors have problems or not. In contrast, laser welding and ultrasonic welding have several "rolling" advantages: firstly, the aluminum wire can be adopted to realize repeated welding, so that the maintainability and the recovery rate are greatly improved; and secondly, the aluminum wire can meet the stress requirement and the tensile force test requirement of the automobile on the connecting part, and even can be used as a fuse, and the aluminum wire can be automatically fused to ensure the safety of the circuit in the case of short circuit. However, the current battery module arrangement mode is that the positive and negative electrodes are arranged in a staggered mode, namely, a part of positive electrodes face upwards and a part of negative electrodes face upwards, then busbars are respectively assembled on the upper portion and the lower portion of the battery pack, and an aluminum wire ultrasonic welding process is utilized for series-parallel connection.
Disclosure of Invention
In order to solve the problems, the invention provides a method for unilateral welding of a cylindrical battery cell, which can reduce the use of materials such as a bus bar and an aluminum wire, reduce the welding workload and further improve the heat dissipation effect of a battery pack.
The invention discloses a unilateral welding method of a cylindrical battery cell, which comprises a plurality of battery cells, a busbar, an upper bracket, a lower bracket, an aluminum wire, a battery cell anode, a battery cell cathode and a battery cell edge, wherein the plurality of battery cells are orderly arranged between the upper bracket and the lower bracket to form a battery module, the busbar is fixed on the upper bracket, the battery cell anode is connected with the busbar through the aluminum wire in a welding way, and the battery cell edge is connected with the busbar through the aluminum wire in a welding way.
Further, the positive electrodes of the plurality of battery cells are fixedly connected with the upper bracket, and the negative electrodes of the plurality of battery cells are fixedly connected with the lower bracket.
Has the advantages that:
according to the unilateral welding method of the cylindrical battery cell, the bus bar is assembled on one side of the positive electrode only through the battery cell arrangement mode, and the bus bar is respectively welded with the positive electrode of the battery cell and the edge of the battery cell through the aluminum wire, so that the battery cells are connected in series and in parallel, the use of materials such as the bus bar and the aluminum wire can be reduced, the welding workload can be reduced, and the heat dissipation effect of a battery pack can be further improved.
Drawings
FIG. 1 is a schematic diagram of a unilateral welding method of a cylindrical battery cell according to the present invention
FIG. 2 is a detailed diagram of the welding effect of the unilateral welding method of the cylindrical battery cell of the present invention
The meaning of each mark in the figure is: 1-busbar, 2-upper bracket, 3-aluminum wire, 4-battery cell anode, and 5-battery cell edge.
Detailed Description
In order to make the technical solution and the advantages of the present invention easier to understand, the detailed description will be made with reference to the accompanying drawings, and the embodiments herein are only used for explaining the present invention and are not used for limiting the present invention.
The invention discloses a unilateral welding method of a cylindrical battery cell, which comprises a plurality of battery cells, a busbar (1), an upper bracket (2), a lower bracket, an aluminum wire (3), a battery cell anode (4), a battery cell cathode and a battery cell edge (5), wherein the plurality of battery cells are orderly arranged between the upper bracket (2) and the lower bracket to form a battery module, the busbar (1) is fixed on the upper bracket (2), the battery cell anode (4) is connected with the busbar (1) through the aluminum wire (3) in a welding manner, and the battery cell edge (5) is connected with the busbar (1) through the aluminum wire (3) in a welding manner.
Further, the battery cell anode (4) is fixedly connected with the upper support (2), and the battery cell cathode is fixedly connected with the lower support.
Preferably, the battery cell in this embodiment is a 18650 cylindrical battery cell;
preferably, in the embodiment, the bus bar (1) and the upper bracket (2) are fixed by an AB glue;
preferably, the welding process in this embodiment is an ultrasonic aluminum wire welding process.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (1)
1. The invention discloses a unilateral welding method of a cylindrical battery cell, which comprises a plurality of battery cells, a busbar, an upper support, a lower support, an aluminum wire, a battery cell anode, a battery cell cathode and a battery cell edge, wherein the plurality of battery cells are orderly arranged between the upper support and the lower support to form a battery module.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811208784.1A CN111063855A (en) | 2018-10-17 | 2018-10-17 | Unilateral welding method for cylindrical battery cell |
| CN202311521584.2A CN117525761A (en) | 2018-10-17 | 2018-10-17 | Single-side welding method for cylindrical battery cell and battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811208784.1A CN111063855A (en) | 2018-10-17 | 2018-10-17 | Unilateral welding method for cylindrical battery cell |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311521584.2A Division CN117525761A (en) | 2018-10-17 | 2018-10-17 | Single-side welding method for cylindrical battery cell and battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111063855A true CN111063855A (en) | 2020-04-24 |
Family
ID=70296912
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811208784.1A Pending CN111063855A (en) | 2018-10-17 | 2018-10-17 | Unilateral welding method for cylindrical battery cell |
| CN202311521584.2A Pending CN117525761A (en) | 2018-10-17 | 2018-10-17 | Single-side welding method for cylindrical battery cell and battery module |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311521584.2A Pending CN117525761A (en) | 2018-10-17 | 2018-10-17 | Single-side welding method for cylindrical battery cell and battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN111063855A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4239782A4 (en) * | 2020-11-02 | 2024-10-02 | Samsung Sdi Co Ltd | Battery pack |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204651380U (en) * | 2015-06-05 | 2015-09-16 | 北京科易动力科技有限公司 | Battery core syndeton |
| CN205141063U (en) * | 2015-11-24 | 2016-04-06 | 北京闪信鼎中技术有限公司 | Battery module |
| CN105914319A (en) * | 2016-07-01 | 2016-08-31 | 上海星历新能源科技有限公司 | Cylindrical battery module and manufacturing method |
| CN205723727U (en) * | 2016-04-28 | 2016-11-23 | 周伟 | Power battery pack |
| CN206179963U (en) * | 2016-10-31 | 2017-05-17 | 深圳市沃特玛电池有限公司 | Battery assembly |
| CN206742369U (en) * | 2017-03-23 | 2017-12-12 | 惠州亿纬锂能股份有限公司 | A kind of battery and battery component |
| CN107464909A (en) * | 2016-08-02 | 2017-12-12 | 伍伟东 | The welding method of battery modules |
| CN206976514U (en) * | 2017-05-16 | 2018-02-06 | 深圳市沃特玛电池有限公司 | A kind of battery pack structure |
| CN207368063U (en) * | 2017-07-05 | 2018-05-15 | 深圳市赢合科技股份有限公司 | Cylindrical battery aluminium wire ultra-sonic welded battery pack |
| KR20180080541A (en) * | 2017-01-04 | 2018-07-12 | 삼성에스디아이 주식회사 | Battery Pack |
-
2018
- 2018-10-17 CN CN201811208784.1A patent/CN111063855A/en active Pending
- 2018-10-17 CN CN202311521584.2A patent/CN117525761A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204651380U (en) * | 2015-06-05 | 2015-09-16 | 北京科易动力科技有限公司 | Battery core syndeton |
| CN205141063U (en) * | 2015-11-24 | 2016-04-06 | 北京闪信鼎中技术有限公司 | Battery module |
| CN205723727U (en) * | 2016-04-28 | 2016-11-23 | 周伟 | Power battery pack |
| CN105914319A (en) * | 2016-07-01 | 2016-08-31 | 上海星历新能源科技有限公司 | Cylindrical battery module and manufacturing method |
| CN107464909A (en) * | 2016-08-02 | 2017-12-12 | 伍伟东 | The welding method of battery modules |
| CN206179963U (en) * | 2016-10-31 | 2017-05-17 | 深圳市沃特玛电池有限公司 | Battery assembly |
| KR20180080541A (en) * | 2017-01-04 | 2018-07-12 | 삼성에스디아이 주식회사 | Battery Pack |
| CN206742369U (en) * | 2017-03-23 | 2017-12-12 | 惠州亿纬锂能股份有限公司 | A kind of battery and battery component |
| CN206976514U (en) * | 2017-05-16 | 2018-02-06 | 深圳市沃特玛电池有限公司 | A kind of battery pack structure |
| CN207368063U (en) * | 2017-07-05 | 2018-05-15 | 深圳市赢合科技股份有限公司 | Cylindrical battery aluminium wire ultra-sonic welded battery pack |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4239782A4 (en) * | 2020-11-02 | 2024-10-02 | Samsung Sdi Co Ltd | Battery pack |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117525761A (en) | 2024-02-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 518107, 1st to 2nd floors, Building A, Xinwangda Industrial Park, No. 18 Tangjia South Road, Guangming New District, Shenzhen, Guangdong Province Applicant after: Xinwangda Power Technology Co.,Ltd. Address before: 518107, 1st to 2nd floors, Building A, Xinwangda Industrial Park, No. 18 Tangjia South Road, Guangming New District, Shenzhen, Guangdong Province Applicant before: SUNWODA ELECTRIC VEHICLE BATTERY Co.,Ltd. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200424 |