CN112542660A - Lithium battery electrode connection process - Google Patents
Lithium battery electrode connection process Download PDFInfo
- Publication number
- CN112542660A CN112542660A CN202011417887.6A CN202011417887A CN112542660A CN 112542660 A CN112542660 A CN 112542660A CN 202011417887 A CN202011417887 A CN 202011417887A CN 112542660 A CN112542660 A CN 112542660A
- Authority
- CN
- China
- Prior art keywords
- spraying
- lithium battery
- electrode
- battery electrode
- connection process
- 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
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000005507 spraying Methods 0.000 claims abstract description 62
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000004140 cleaning Methods 0.000 claims abstract description 6
- 238000000465 moulding Methods 0.000 claims abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 19
- 239000010949 copper Substances 0.000 claims description 14
- 229910052802 copper Inorganic materials 0.000 claims description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 11
- 229910000838 Al alloy Inorganic materials 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 abstract description 24
- 238000010288 cold spraying Methods 0.000 abstract description 7
- 238000005476 soldering Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000000758 substrate Substances 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- 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
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention relates to the technical field of battery electrode welding, in particular to a lithium battery electrode connecting process, which comprises an electrode; the lithium battery electrode connection process comprises the following steps: processing and molding the electrode; cleaning the electrode to form a spraying position; spraying a spraying layer on the surface of the spraying position; the spraying layer is sprayed on the battery pole piece, so that subsequent connectors or welding connection is facilitated, the cost is lower than that of the traditional electromagnetic pulse welding method, the cold spraying layer is rooted in the base material, the contact resistance is low, and the spraying layer formed by spraying is high in integrity and good in stability.
Description
Technical Field
The invention relates to the technical field of battery electrode welding, in particular to a lithium battery electrode connecting process.
Background
With the development of science and technology, lithium batteries become mainstream, the positive pole of the single lithium battery is an aluminum sheet, the negative pole is a copper sheet, the single lithium battery can form a battery pack only by a series connection mode, the connection between the electrodes of each single lithium battery plays a vital role in the performance of the battery pack, the resistance of the single lithium battery is very large, the connection between the electrodes is unreliable by adopting mechanical connection, so the connection of copper and aluminum is realized by adopting welding to improve the comprehensive performance of copper and aluminum.
The direct welding of copper and aluminum can generate welding slag which is easy to splash, and the welding slag is mainly solder which splashes to a human body and is easy to cause certain damage to the human body. The existing method adopts pulse welding, the welding cost is high, and the welding efficiency is high, so that the electrode welding of the lithium battery needs to be further improved.
Disclosure of Invention
In order to solve the problems, the invention provides the lithium battery electrode connection process for spraying the spraying layer on the battery pole piece, which is convenient for subsequent connectors or welding connection, and has lower cost than the traditional electromagnetic pulse welding process, low contact resistance because the cold spraying layer is rooted in the base material, strong integrity of the spraying layer formed by spraying and good stability.
The technical scheme adopted by the invention is as follows: a lithium battery electrode connection process comprises a lithium battery electrode post;
the lithium battery electrode connecting process comprises the following steps:
s1, processing and molding the electrode post;
s2, cleaning the electrode pole to form a spraying position;
and S3, spraying a spraying layer on the surface of the spraying position.
The electrode pole is made of aluminum, aluminum alloy, copper or copper-aluminum composite materials.
In a further improvement of the above scheme, in step S3, the spray coating material is cold sprayed on the surface of the spray site to form a spray coating.
The further improvement of the scheme is that the spraying material is copper powder to form a copper coating.
The further improvement of the scheme is that the thickness of the spraying layer is 0.01 mm-2.0 mm.
The further improvement of the scheme is that the particle size of the spraying material is 1-20 μm.
In a further improvement of the above solution, in step S3, the spraying speed of the spraying is greater than 600 m/S.
The technical proposal is further improved in that the electrode pole is an electrode binding post or a pole lug.
In a further improvement of the above scheme, the electrode is a negative electrode of a lithium battery.
The invention has the beneficial effects that:
compared with the traditional welding of a lithium battery motor, the invention sprays the spraying layer in the battery pole piece, is convenient for subsequent connectors or welding connection, has lower cost than the traditional welding method through electromagnetic pulses, roots the cold spraying layer in the base material, has low contact resistance, and has strong integrity and good stability of the spraying layer formed by spraying. Specifically, the electrode comprises an electrode post; the lithium battery electrode connecting process comprises the following steps: processing and molding the electrode post; cleaning the electrode pole to form a spraying position; spraying a spraying layer on the surface of the spraying position; the whole process is simple, the cold spraying and the soldering are carried out, the connection stability is good, and the cost is low.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic process flow diagram of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in fig. 1-2, a lithium battery electrode connection process includes an electrode post;
the lithium battery electrode connecting process comprises the following steps:
s1, processing and molding the electrode post;
s2, cleaning the electrode pole to form a spraying position;
and S3, spraying a spraying layer on the surface of the spraying position.
The electrode post 100 is made of an aluminum sheet, an aluminum alloy sheet, a copper sheet or a copper-aluminum composite sheet as a substrate, is selected according to a heat dissipation use environment, is generally made of an aluminum sheet or an aluminum alloy sheet, and has good heat conduction and heat dissipation performance.
In step S3, the electrode post 100 is an aluminum or aluminum alloy sheet; spraying materials on the surface of the spraying position through cold spraying to form a spraying layer; direct welding of copper and aluminum cannot be achieved, pulse welding is needed, the pulse welding cost is high, the copper and aluminum are welded through cold spraying of the spraying layer, the welding stability is good, and the integrity is strong.
The spraying material is copper powder to form a copper coating; and a copper layer is sprayed on the electrode pole 100, and the position of the copper layer is welded, so that the welding taste is good.
The thickness of the spraying layer is 0.01 mm-2.0 mm; the thickness is preferably 0.1 mm-0.2 mm, the adhesion effect is good, and the spraying efficiency is high.
The particle size of the spraying material is 1-20 μm; the diameter of the copper powder particles can be selected according to the uniform temperature plates with different sizes, so that better adhesion in the spraying process can be ensured.
In step S3, the spraying speed is more than 600 m/S; the spraying speed of more than 600m/s can ensure that the copper powder particles have better adhesion effect.
The electrode post 100 is an electrode post, an electrode terminal or a tab; the second electrode terminal 200 is an electrode terminal, an electrode terminal or a tab.
The spraying layer is sprayed in the battery pole piece, so that subsequent soldering tin connection is facilitated, welding is convenient, compared with the traditional method of electromagnetic pulse welding, the cost is lower, and the spraying position formed by spraying is high in integrity and good in stability. Specifically, the electrode comprises an electrode post; the lithium battery electrode connecting process comprises the following steps: processing and molding the electrode post; cleaning the electrode pole to form a spraying position; spraying a spraying layer on the surface of the spraying position; the whole process is simple, the cold spraying and the soldering are carried out, the connection stability is good, and the cost is low.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. A lithium battery electrode connection process is characterized in that: comprises a lithium battery electrode post;
the lithium battery electrode connecting process comprises the following steps:
s1, processing and molding the electrode post;
s2, cleaning the electrode pole to form a spraying position;
and S3, spraying a spraying layer on the surface of the spraying position.
2. The lithium battery electrode connection process as claimed in claim 1, wherein: the electrode pole is made of aluminum, aluminum alloy, copper or copper-aluminum composite material.
3. The lithium battery electrode connection process as claimed in claim 1, wherein: in the step S3, the spray coating material is cold sprayed on the surface of the spray coating site to form a spray coating.
4. The lithium battery electrode connection process as claimed in claim 3, wherein: the spraying material is copper powder to form a copper coating.
5. The lithium battery electrode connection process as claimed in claim 4, wherein: the thickness of the spraying layer is 0.01 mm-2.0 mm.
6. The lithium battery electrode connection process as claimed in claim 5, wherein: the particle size of the spraying material is 1-20 μm.
7. The lithium battery electrode connection process as claimed in claim 6, wherein: in step S3, the spraying speed is higher than 600 m/S.
8. The lithium battery electrode connection process as claimed in claim 1, wherein: the electrode pole is an electrode binding post or a pole lug.
9. The lithium battery electrode connection process as claimed in claim 1, wherein: the electrode is a negative electrode of a lithium battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011417887.6A CN112542660A (en) | 2020-12-07 | 2020-12-07 | Lithium battery electrode connection process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011417887.6A CN112542660A (en) | 2020-12-07 | 2020-12-07 | Lithium battery electrode connection process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112542660A true CN112542660A (en) | 2021-03-23 |
Family
ID=75016254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011417887.6A Pending CN112542660A (en) | 2020-12-07 | 2020-12-07 | Lithium battery electrode connection process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112542660A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040185332A1 (en) * | 2003-03-21 | 2004-09-23 | Moltech Corporation | Tabs for electrochemical cells |
| US20110147205A1 (en) * | 2009-12-21 | 2011-06-23 | Daniel Guay | Method and system for producing electrocatalytic coatings and electrodes |
| CN105378146A (en) * | 2013-07-08 | 2016-03-02 | 日本发条株式会社 | Conductive member and method for manufacturing conductive member |
| CN108695480A (en) * | 2017-03-30 | 2018-10-23 | 福特全球技术公司 | Electrical interconnections for battery unit |
| CN110635162A (en) * | 2019-09-23 | 2019-12-31 | 深圳市泽塔电源系统有限公司 | Electrochemical energy storage device and method of manufacture |
-
2020
- 2020-12-07 CN CN202011417887.6A patent/CN112542660A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040185332A1 (en) * | 2003-03-21 | 2004-09-23 | Moltech Corporation | Tabs for electrochemical cells |
| US20110147205A1 (en) * | 2009-12-21 | 2011-06-23 | Daniel Guay | Method and system for producing electrocatalytic coatings and electrodes |
| CN105378146A (en) * | 2013-07-08 | 2016-03-02 | 日本发条株式会社 | Conductive member and method for manufacturing conductive member |
| CN108695480A (en) * | 2017-03-30 | 2018-10-23 | 福特全球技术公司 | Electrical interconnections for battery unit |
| CN110635162A (en) * | 2019-09-23 | 2019-12-31 | 深圳市泽塔电源系统有限公司 | Electrochemical energy storage device and method of manufacture |
Non-Patent Citations (1)
| Title |
|---|
| 孙家枢等: "《热喷涂科学与技术》", 31 October 2013, 冶金工业出版社 * |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210323 |