CN105374975A - Cell tab welding method - Google Patents
Cell tab welding method Download PDFInfo
- Publication number
- CN105374975A CN105374975A CN201510819855.1A CN201510819855A CN105374975A CN 105374975 A CN105374975 A CN 105374975A CN 201510819855 A CN201510819855 A CN 201510819855A CN 105374975 A CN105374975 A CN 105374975A
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- CN
- China
- Prior art keywords
- lug
- tab
- welding
- cell
- end portion
- 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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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
- H01M50/531—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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a cell tab welding method. The cell tab welding method comprises the following steps: step 1, putting a cell blank into a clamp that is adaptive with the structure of the cell, and enabling the cell tab welding part to pass through the clamp to be exposed externally; step 2, cutting the tab welding part of the cell blank; step 3, forming the tab into a tab long end part, a tab short end part and a tab middle rubber layer part; step 4, reversely bending along the two ends of the tab middle rubber layer; step 5, covering the clamp with the processed tab long end part, and welding the tab short end part and the residual part after the cell tab welding part is cut; and step 6, removing the clamp, bending the welded tab short end part to be tightly fitted to the surface of the cell, bending the tab long end part until the bent tab long end part and the tab middle rubber layer part are in the same straight line, and then the tab long end part is perpendicular to the tab short end part. According to the cell tab welding method, the welding performance among the cell tabs can be the maximum, so as to improve the durability of the cell tabs, reduce contact resistance, realize uniform welding, and avoid performance deviations of products.
Description
Technical field
The present invention designs cell polar ear welding field, a kind of more specifically can the cell polar ear welding method of compact welding.
Background technology
When battery pole ear manually welds, need the hand-held battery core of employee one, a hand-held lug, range estimation is put into suitable position, has carried out welding.In order to manual welding accurate positioning, the way that can take has a lot, such as makes a kind of clamp box, and setting-out location on clamp box, lug is put into setting-out position and aligns with it by employee, realizes the location of welding.
Patent CN103647117A discloses a kind of internal structure of soft bag lithium ionic cell, comprise housing and be arranged on the battery in housing, arrange EVA between the lug of described battery, the lug of described battery is arranged the pcb board with through hole, described lug is through pcb board.After the present invention can ensure battery core series connection, lug keeps good contact, can ensure to weld rear difficult drop-off simultaneously, gap insulating properties between cell polar ear, EVA that is high temperature resistant, good moldability fill, and EVA is that a kind of plastics materials is made up of ethene (E) and vinylacetate (VA).Play the internal resistance between reduction insulator with ultrasonic waves welding soldering polar ear and prevent lug from fixing and loosely come off.Lug scolding tin after welding also facilitates the link of wire harness while playing the fastness strengthening lug.Lug from the PCB of through hole through not only playing the crushing resistance strengthened fixing lug but also increase cell polar ear position.
Patent CN102364720A discloses a kind of bus of soft pack cell module, it offers the screwed hole wearing groove and fixed signal line terminals passed for cell polar ear, cell polar ear is laid in contiguous wearing on the tab welding face of groove through bending after wearing groove, and is directly fixed on tab welding face by welding manner.The present invention, by being welded on by cell polar ear on smooth tab welding face, both having achieved cell polar ear and had been connected with the safe and reliable of bus, again convenient operation and contact resistance is less, greatly reduced high temperature risk during battery core heavy-current discharge.
Patent CN204035861U discloses a kind of flexible packing lithium ion battery battery core weld jig structure, and comprise electrical chip and jig plate, the top of described electrical chip has positive and negative lug; Described jig plate Surface Mount is on described electrical chip, and a side of this jig plate is vertically bent to form one rib, and this rib tips upside down on described electrical chip side; Described jig plate top has the detent that a pair corresponds to positive and negative lug, and described detent has elementary groove and secondary grooves.The utility model solves the bad problems such as bigger than normal or the less than normal or lug centre-to-centre spacing skew of lug centre-to-centre spacing in battery pole piece and cell polar ear welding process, and practical, is worthy to be popularized.
Below be only improve location and reliability, but in existing technology, ubiquitous problem is that existing welding manner cannot save space, the capacity of battery cannot promote.
Summary of the invention
1, object of the present invention.
The present invention, in order to solve in prior art, cannot save space for welding process and make volume reduce very rare bottleneck further, and propose a kind of pole ear welding method, effectively can save space, improve battery capacity.
2, the technical solution adopted in the present invention.
Cell polar ear welding method, carry out in accordance with the following steps:
Step 1, battery core blank is put into the fixture adapted with core strueture, cell polar ear weld part exposes through fixture;
Step 2, the tab welding portion of battery core blank to be cut along the weld part root of lug;
Step 3, lug preliminary treatment: make lug form lug long end portion, lug short end portion and lug intermediate gelatine layer portion;
Step 4, be oppositely bent to form " Z " font along the two ends in lug intermediate gelatine layer portion;
Step 5, cover on upper fixture by the lug long end portion after process, lug short end portion welds with the residue place of reduction cell polar ear weld part; Lug intermediate gelatine layer portion next-door neighbour battery core;
Step 6, remove fixture after, by welding after lug short end portion bending be close to battery core surface, end vertical short in lug after the portion's bending of lug long end and lug intermediate gelatine layer portion are in same straight line.
Further, described upper fixture arranges two locating pieces in the position that tab welding portion is corresponding, for calibrating tab welding position;
Further, in described step 5, the lug long end portion after process is covered two the locating piece places being positioned at upper fixture.
Further, described lug is formed by homogenous material, and the welding region of described lug is formed by the material identical with described lug.
Further, carry out step 7 again after described step 6: the battery core that butt welding connects encapsulates.
Further, the position that described upper fixture and lower clamp are positioned at lug is provided with fluting, is fixed lug.
3, beneficial effect of the present invention.
(1) the present invention is by the improvement of tab welding mode, solves in the process of reducing lug, due to the stop of fixture, reduces and leaves residual part, thus cause the bottleneck problem that cannot reduce the volume of battery core further;
(2) the present invention is at weld period, maximizes the weldability between cell polar ear, increases durability, reduces contact resistance, realizes uniform weldability, and avoid the aberrations in property between product.
To sum up, by simply designing and operating procedure, complete the realization of an operation object, finally meet battery core design needs, cost is low, applied range, can meet customer requirement batch production.
Accompanying drawing explanation
Fig. 1 is that battery core fixture of the present invention is installed and lug reduces schematic diagram.
Fig. 2 is lug schematic diagram of the present invention.
Fig. 3 is lug end view of the present invention.
Fig. 4 is that lug of the present invention is bent into " Z " font figure.
Fig. 5 is battery core positioning block of clamp schematic diagram of the present invention.
Fig. 6 is battery core fixture lug of the present invention location schematic diagram.
Fig. 7 is battery core positioning block of clamp of the present invention and location notch schematic diagram.
Fig. 8 is tab welding schematic diagram of the present invention.
Fig. 9 is encapsulation schematic diagram of the present invention.
Embodiment
In order to enable the auditor of Patent Office especially the public clearly understand technical spirit of the present invention and beneficial effect, applicant will elaborate below by way of example, but be not all the restriction to the present invention program to the description of embodiment, any conceive according to the present invention done be only pro forma but not substantial equivalent transformation and all should be considered as technical scheme category of the present invention.
Embodiment 1
A kind of cell polar ear welding method, is characterized in that carrying out in accordance with the following steps:
Step 1, as shown in Figure 1, battery core blank 7 is put into the fixture 6 adapted with core strueture, cell polar ear weld part 8 exposes through fixture;
Step 2, the tab welding portion 8 of battery core blank to be cut along the weld part root of lug;
Step 3, as shown in Figure 2,3, lug preliminary treatment: make lug form lug long end portion 1, lug short end portion 3 and lug intermediate gelatine layer portion 2;
Step 4, as shown in Figure 4, the two ends along lug intermediate gelatine layer portion are oppositely bent to form " Z " font;
Step 5, as shown in Figure 5,6, lug long end portion 1 after process is covered on upper fixture, as shown in Figure 7, described upper fixture arranges two locating pieces 4 in the position that tab welding portion is corresponding, for calibrating tab welding position, the lug long end portion after process is covered two the locating piece places being positioned at upper fixture; The position that described upper fixture and lower clamp are positioned at lug is provided with fluting 5, is fixed lug; As shown in Figure 8, lug short end portion 3 welds with the residue place reducing cell polar ear weld part; Lug intermediate gelatine layer portion 2 is close to battery core;
Step 6, as shown in Figure 9, after removing fixture, lug short end portion 3 bending after welding is close to battery core surface, and portion 1 bending of lug long end and lug intermediate gelatine layer portion 2 are in after same straight line vertical with lug short end portion 3.
Step 7: the battery core that butt welding connects encapsulates.
Described lug is formed by homogenous material, and the welding region of described lug is formed by the material identical with described lug.
The present invention, at weld period, maximizes the weldability between cell polar ear, increases durability, reduces contact resistance, realizes uniform weldability, and avoid the aberrations in property between product.
Claims (6)
1. a cell polar ear welding method, is characterized in that carrying out in accordance with the following steps:
Step 1, battery core blank (7) is put into the fixture (6) adapted with core strueture, cell polar ear weld part (8) exposes through fixture;
Step 2, the tab welding portion (8) of battery core blank to be cut along the weld part root of lug;
Step 3, lug preliminary treatment: make lug form lug long end portion (1), lug short end portion (3) and lug intermediate gelatine layer portion (2);
Step 4, be oppositely bent to form " Z " font along the two ends in lug intermediate gelatine layer portion;
Step 5, by process after lug long end portion (1) cover on upper fixture, lug short end portion (3) with reduction cell polar ear weld part (8) residue place weld; Lug intermediate gelatine layer portion (2) next-door neighbour battery core;
Step 6, remove fixture after, by welding after lug short end portion (3) bending be close to battery core surface, lug long end portion (1) bending and lug intermediate gelatine layer portion (2) are in after same straight line vertical with lug short end portion (3).
2. cell polar ear welding method according to claim 1, is characterized in that: described upper fixture arranges two locating pieces (4) in the position that tab welding portion is corresponding, for calibrating tab welding position.
3. cell polar ear welding method according to claim 1 and 2, is characterized in that: in described step 5, the lug long end portion after process is covered two the locating piece places being positioned at upper fixture.
4. cell polar ear welding method according to claim 1, it is characterized in that: described lug is formed by homogenous material, and the welding region of described lug is formed by the material identical with described lug.
5. cell polar ear welding method according to claim 1, is characterized in that: carry out step 7 again after described step 6: the battery core that butt welding connects encapsulates.
6. cell polar ear welding method according to claim 1, is characterized in that: the position that described upper fixture and lower clamp are positioned at lug is provided with fluting (5), is fixed lug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510819855.1A CN105374975B (en) | 2015-11-24 | 2015-11-24 | A kind of cell polar ear welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510819855.1A CN105374975B (en) | 2015-11-24 | 2015-11-24 | A kind of cell polar ear welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105374975A true CN105374975A (en) | 2016-03-02 |
| CN105374975B CN105374975B (en) | 2017-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510819855.1A Active CN105374975B (en) | 2015-11-24 | 2015-11-24 | A kind of cell polar ear welding method |
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| Country | Link |
|---|---|
| CN (1) | CN105374975B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111618588A (en) * | 2020-06-01 | 2020-09-04 | 江西优特汽车技术有限公司 | Method for welding tab of soft-packaged battery cell |
| CN112117499A (en) * | 2020-09-30 | 2020-12-22 | 珠海冠宇电池股份有限公司 | Battery and method for manufacturing battery |
| CN113708020A (en) * | 2021-08-24 | 2021-11-26 | 湖北亿纬动力有限公司 | Vibration reduction method for tab welding and clamping tool |
| CN114083166A (en) * | 2021-11-03 | 2022-02-25 | 湖南立方新能源科技有限责任公司 | Cell tab bonding wire process and cell tab bonding wire structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201380354Y (en) * | 2009-02-10 | 2010-01-13 | 东莞市鸿宝锂电科技有限公司 | Battery cell automatic bottom-pointing welding device of cylindrical battery |
| JP2011113929A (en) * | 2009-11-30 | 2011-06-09 | Asahi Kasei Corp | Power storage element having laminate film outer package |
| CN202434617U (en) * | 2012-02-06 | 2012-09-12 | 福建师范大学 | Z-shaped plating aluminum lug |
| CN104466074A (en) * | 2014-11-24 | 2015-03-25 | 山东神工海特电子科技有限公司 | Flexible package battery lug welding method |
-
2015
- 2015-11-24 CN CN201510819855.1A patent/CN105374975B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201380354Y (en) * | 2009-02-10 | 2010-01-13 | 东莞市鸿宝锂电科技有限公司 | Battery cell automatic bottom-pointing welding device of cylindrical battery |
| JP2011113929A (en) * | 2009-11-30 | 2011-06-09 | Asahi Kasei Corp | Power storage element having laminate film outer package |
| CN202434617U (en) * | 2012-02-06 | 2012-09-12 | 福建师范大学 | Z-shaped plating aluminum lug |
| CN104466074A (en) * | 2014-11-24 | 2015-03-25 | 山东神工海特电子科技有限公司 | Flexible package battery lug welding method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111618588A (en) * | 2020-06-01 | 2020-09-04 | 江西优特汽车技术有限公司 | Method for welding tab of soft-packaged battery cell |
| CN112117499A (en) * | 2020-09-30 | 2020-12-22 | 珠海冠宇电池股份有限公司 | Battery and method for manufacturing battery |
| CN113708020A (en) * | 2021-08-24 | 2021-11-26 | 湖北亿纬动力有限公司 | Vibration reduction method for tab welding and clamping tool |
| CN114083166A (en) * | 2021-11-03 | 2022-02-25 | 湖南立方新能源科技有限责任公司 | Cell tab bonding wire process and cell tab bonding wire structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105374975B (en) | 2017-08-25 |
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