CN106695184B - Method for welding electrode lug of flexible package lithium ion battery - Google Patents
Method for welding electrode lug of flexible package lithium ion battery Download PDFInfo
- Publication number
- CN106695184B CN106695184B CN201611070649.6A CN201611070649A CN106695184B CN 106695184 B CN106695184 B CN 106695184B CN 201611070649 A CN201611070649 A CN 201611070649A CN 106695184 B CN106695184 B CN 106695184B
- Authority
- CN
- China
- Prior art keywords
- battery
- welding
- tab
- ear
- lithium ion
- 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.)
- Active
Links
- 238000003466 welding Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 14
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 13
- 238000012856 packing Methods 0.000 claims description 8
- 229910000679 solder Inorganic materials 0.000 claims description 4
- 238000005476 soldering Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 239000003292 glue Substances 0.000 abstract 1
- 102100023170 Nuclear receptor subfamily 1 group D member 1 Human genes 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- 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
- H01M10/058—Construction or manufacture
-
- 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
- H01M50/531—Electrode connections inside a battery casing
-
- 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
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a tab welding method of a flexible package lithium ion battery, which is characterized by comprising the following steps: at least comprises the following steps: step 101, pre-welding a battery core tab, specifically: placing the battery core tabs into a tray for welding, and then cutting, wherein only the tabs at the welding points are reserved; step 102, cutting a battery tab, wherein the specific cutting position is a position Dmm below a tab glue of the battery tab; the range of D is 1.8-2.2 mm; 103, placing the battery core obtained in the step 101 and the battery tab obtained in the step 102 into a tray, so that the battery core tab and the battery tab are overlapped; and 104, selecting a welding head according to the process requirements, and then welding the battery core lug and the battery lug. By adopting the technical scheme, the tab welding method of the flexible package lithium ion battery can ensure good conductive effect, can also ensure welding strength, and can improve the safety and reliability of the battery.
Description
Technical field
The present invention relates to technical field of lithium ion, more particularly to a kind of tab welding of flexible packing lithium ion battery
Method.
Background technology
The welding manner of existing flexible packing lithium ion battery, cell polar ear and positive/negative lug uses folding weldering side substantially
By positive and negative lug bending after the completion of formula-tab welding.On monomer battery structure, the existing profit rolled over weldering mode can be larger
With small product size, ensures battery size, but easily occur sharp comer when trimming operation, be likely to cause when lug is by external force curved
Lug is inserted into inside battery core after folding, is led to internal short-circuit of battery, is reduced battery security and reliability.And operating process is numerous
Superfluous complexity, tab welding bending positioning consistency is poor, directly affects the consistency of product size, may finally lead to combination electricity
During the connection in series-parallel of pond, part lug stress is big and causes fatal security risk.
Invention content
The technical problem to be solved by the present invention is to：A kind of pole ear welding method of flexible packing lithium ion battery is provided, this is soft
The pole ear welding method of packaging lithium ion battery not only can guarantee good conductive effect, but also can guarantee weld strength, while can
Improve safety and the reliability of battery.
The present invention is adopted the technical scheme that solve technical problem present in known technology：
A kind of pole ear welding method of flexible packing lithium ion battery includes at least following steps：
Step 101, cell polar ear pre-welding, specially：Cell polar ear is put into pallet and is welded, is then cut out
It cuts, only retains the lug at solder joint；
Step 102 cuts battery pole ear, specific to cut below the gel that position is battery pole ear at Dmm；Institute
The range for stating D is 1.8~2.2mm；
The battery core that step 101 obtains and the battery pole ear that step 102 obtains are put into pallet by step 103 so that battery core pole
Ear and battery pole ear overlapping；
Step 104 selects soldering tip according to technological requirement, then welds cell polar ear and battery pole ear.
The invention has the advantages and positive effects that：
1. by using above-mentioned technical proposal, the consistency of welding region one-pass molding, product size is good；
2. the cell polar ear side chamfering cutting of battery pole ear and pre-welding is welded again, lug sharp comer after cutting is evaded
The problem of, eliminate the security risk of short circuit；
3, simple and convenient is operated, the generation of folding s tress is avoided, reduces curved electrode lug folding procedure, improves productivity.
Description of the drawings
Fig. 1 is the structure chart before cell polar ear cutting in the preferred embodiment of the present invention；
Fig. 2 is the structure chart after cell polar ear cutting in the preferred embodiment of the present invention；
Fig. 3 is the schematic diagram that battery pole ear cuts position in the preferred embodiment of the present invention；
Fig. 4 is step 104 welding position schematic diagram in the preferred embodiment of the present invention.
Fig. 5 is using the weld strength figure after preferred embodiment of the present invention welding.
Wherein：1, cell polar ear；2, welded bands；3, redundance；4, gel；5, cutting wires.
Specific implementation mode
In order to further understand the content, features and effects of the present invention, the following examples are hereby given, and coordinate attached drawing
Detailed description are as follows：
It please refers to Fig.1 to Fig.3, a kind of pole ear welding method of flexible packing lithium ion battery includes the following steps：
Step 101, cell polar ear pre-welding, specially：Cell polar ear is put into pallet and is welded, is then cut out
It cuts, only retains the lug at solder joint；
Step 102 cuts battery pole ear, specific to cut below the gel that position is battery pole ear at Dmm；Institute
The range for stating D is 1.8~2.2mm；
The battery core that step 101 obtains and the battery pole ear that step 102 obtains are put into pallet by step 103 so that battery core pole
Ear and battery pole ear overlapping；
Step 104 selects soldering tip according to technological requirement, then welds cell polar ear and battery pole ear.
Pallet in above preferred embodiment can be fixed position is carried out when the Multilayer pole ear pre-welding of battery core.In pallet
On offer multiple flutings, fluting position is the welding position of Multilayer pole ear.
It please refers to Fig.1, before pre-welding, welded bands 2 is reserved on cell polar ear 1, welded bands 2 are apart from the most short of battery core
Distance about 1mm to 2mm；Cell polar ear 1 is put into pallet and carries out pre-welding, along the right side of welded bands 2 after the completion of welding
Side line clipping falls redundance 3, only retains lug at solder joint；Design sketch after cutting is as shown in Figure 2；
It please refers to Fig. 3, crop 4 or less the 2mm of gel or so of battery pole ear；It is i.e. left from 4 left side 2mm of gel
Right position is defined as cutting wires 5, is cut along cutting wires 5；
It please refers to Fig. 4, the battery core of pre-welding and the lug at cutting position to be put into welding tooling pallet, lap is pressed
It requires to be welded according to technological parameter.
Welding result please refers to Fig. 5 or refers to following table：
1 folding of table welds and straight weldering mode weld strength test result
The embodiments of the present invention have been described in detail above, but content is only the preferred embodiment of the present invention,
It should not be construed as limiting the practical range of the present invention.Any changes and modifications in accordance with the scope of the present application,
It should all still fall within the scope of the patent of the present invention.
Claims (2)
1. a kind of pole ear welding method of flexible packing lithium ion battery, it is characterised in that：Including at least following steps：
Step 101, cell polar ear pre-welding, specially：Welded bands are reserved on the cell polar ear, welded bands are apart from battery core
The shortest distance is 1mm to 2mm；Cell polar ear is put into pallet and is welded, then along the right edge line clipping of welded bands
Fall redundance, only retains the lug at solder joint；
Step 102 cuts battery pole ear, specific to cut below the gel that position is battery pole ear at Dmm；The D
Range be 1.8~2.2mm；
The battery core that step 101 obtains and the battery pole ear that step 102 obtains are put into pallet by step 103 so that cell polar ear and
Battery pole ear is overlapped；
Step 104 selects soldering tip according to technological requirement, then welds cell polar ear and battery pole ear.
2. the pole ear welding method of flexible packing lithium ion battery according to claim 1, it is characterised in that：The D is equal to
2mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611070649.6A CN106695184B (en) | 2016-11-29 | 2016-11-29 | Method for welding electrode lug of flexible package lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611070649.6A CN106695184B (en) | 2016-11-29 | 2016-11-29 | Method for welding electrode lug of flexible package lithium ion battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106695184A CN106695184A (en) | 2017-05-24 |
| CN106695184B true CN106695184B (en) | 2018-10-16 |
Family
ID=58935022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611070649.6A Active CN106695184B (en) | 2016-11-29 | 2016-11-29 | Method for welding electrode lug of flexible package lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106695184B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111112819A (en) * | 2019-12-17 | 2020-05-08 | 深圳市海盈科技有限公司 | Welding method for laminated tab and battery cell |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102227031A (en) * | 2011-05-20 | 2011-10-26 | 无锡市明杨电池有限公司 | Lithium ion battery with high-rate discharge characteristic |
| CN102361068A (en) * | 2011-10-24 | 2012-02-22 | 深圳市格瑞普电池有限公司 | Pole piece for lithium ion battery, laminated lithium ion battery and preparation method of laminated lithium ion battery |
| CN103531741B (en) * | 2013-09-24 | 2016-03-30 | 北京鼎能开源电池科技股份有限公司 | A kind of lithium ionic cell cathode ear pole component and preparation method thereof and lithium ion battery |
| CN203967146U (en) * | 2014-07-10 | 2014-11-26 | 湖北骆驼蓄电池研究院有限公司 | The lithium ion battery group of power Soft Roll lithium ion list core strueture and composition thereof |
| HK1195446A2 (en) * | 2014-08-08 | 2014-12-19 | Minwa Energy Lithium Battery Technology Co Ltd | A lithium-ion batteries and its charging and discharging methods |
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2016
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Also Published As
| Publication number | Publication date |
|---|---|
| CN106695184A (en) | 2017-05-24 |
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