CN206464701U - A kind of block welding structure of lithium ion battery - Google Patents
A kind of block welding structure of lithium ion battery Download PDFInfo
- Publication number
- CN206464701U CN206464701U CN201720037840.4U CN201720037840U CN206464701U CN 206464701 U CN206464701 U CN 206464701U CN 201720037840 U CN201720037840 U CN 201720037840U CN 206464701 U CN206464701 U CN 206464701U
- Authority
- CN
- China
- Prior art keywords
- lithium ion
- ion battery
- welding
- solder joint
- block
- 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.)
- Expired - Fee Related
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Classifications
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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
-
- 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
Abstract
The utility model is related to a kind of block welding structure of lithium ion battery.Positive pole ear is welded on the orifice plate of block by more than two solder joints；It is characterized in that：Partially overlapped between each solder joint.The utility model considerably improves the weld strength of battery cap and lug, reduces the production difficulty of lithium ion battery, improves the production efficiency of lithium ion battery.
Description
Technical field
The utility model is related to the lid of battery or the welding structure of end cap, the block welding of particularly a kind of lithium ion battery
Structure.
Background technology
Lithium ion battery be nineteen nineties Japanese Sony Corporation develop and start to realize commercialization, it goes out
It is now the once leap in secondary cell development history.Lithium ion battery is so that its lightweight, capacity is high, operating voltage is high, use the longevity
The features such as life is long and pollution-free is developed rapidly in the 3C such as mobile phone, notebook computer fields, and its global marketing volume has surpassed
The summation of ni-mh, nickel-cadmium cell is crossed, China's Development of Electric Vehicles is rapid in recent years, volume of production and marketing reaches the whole world first.
With the demand growth of electric automobile, higher requirement is proposed to lithium ion battery, it is desirable to which the structure of battery can
Lean on, uniformity is good, safe and reliable, so it is urgent work constantly to improve the material of lithium ion battery, technique, equipment.
Need positive pole ear and block to be welded in lithium ion battery production process, the general side using laser welding
Formula is realized.The structure of block, typically can be in positive pole pole as shown in figure 1, positive pole ear 6 needs to be welded on the orifice plate 1 of block
Weld 2 to 4 solder joints on ear 6 to ensure the intensity of welding, general distribution mode is as shown in Fig. 2 the diameter 0.4 to 1 of solder joint 7
Millimeter, 0.5 to 1 millimeter of the distance between solder joint, each solder joint is scattered, and the material of positive pole ear 6 and orifice plate 1 is aluminium,
During welding, laser is produced using laser-beam welding machine, laser melts positive pole ear 6 and orifice plate 1, positive pole ear 6 and orifice plate 1 after cooling
Link together, 2 to 3 millimeters general of positive pole ear width, so 2 to 4 solder joints can only be welded, if pole in welding process
Ear is crooked, it cannot be guaranteed that all solder joints are all welded on lug 6, while in order to reach that it is high-power sharp that weld strength needs
Photocoagulator, energy deficiency may result in rosin joint, and energy is too high, causes fried fire or melts to wear, be not easy accurately to control
Technique.
Utility model content
The purpose of this utility model is the block welding structure for providing a kind of lithium ion battery, mainly solves above-mentioned existing
Technical problem present in technology, it considerably improves the weld strength of battery cap and lug, reduces lithium ion battery
Production difficulty, improve the production efficiency of lithium ion battery.
To achieve the above object, the technical solution of the utility model is：
A kind of block welding method of lithium ion battery, it is that positive pole ear is welded on the orifice plate of block, during welding,
Laser is produced using laser-beam welding machine, laser melts positive pole ear and orifice plate, and positive pole ear and orifice plate link together after cooling；
It is characterized in that：Partially overlapped between each solder joint, the heat produced when under first solder joint weldering can form height around solder joint
Temperature is preheated to positive pole ear, and second solder joint is welded in this region and avoids the need for too high energy, it is easier to weld, follow-up weldering
The heat of solder joint before point can all be utilized.
A kind of block welding structure of lithium ion battery, positive pole ear is welded on the hole of block by more than two solder joints
On plate；It is characterized in that：Partially overlapped between each solder joint.
The block welding structure of described lithium ion battery, it is characterised in that：0.4 to 1 millimeter of the diameter of each solder joint, weldering
The diameter for connecing region is no more than 1.5 millimeters.
The utility model has the following advantages that：
The utility model improves the welding manner and structure of lithium ion battery cover and positive pole ear, strong to improve welding
Degree, can effectively antagonize during battery use and to be come off due to shaking the lug caused, and can reduce welding difficulty and carry
High efficiency, substandard products battery is produced caused by reducing the welding in production process.By change laser welding solder joint from
Dissipate and be distributed as superposition distribution to realize.
Brief description of the drawings
Fig. 1 is the capping structure figure of lithium ion battery.
Fig. 2 is common block and the solder joint distribution of tab welding.
Fig. 3 is the block of utility model and the solder joint distribution of tab welding.
In figure：1- orifice plates；2- top covers（The positive pole of battery）；3- burst disks；4- packing rings；5- sealing rings；6- positive pole ears；7-
Solder joint.
Embodiment
The utility model discloses a kind of block welding structure of lithium ion battery.It mainly welds positive pole ear 6
On the orifice plate 1 of block, 2 to 4 solder joints can be typically welded on positive pole ear 6 to ensure the intensity of welding, the diameter of solder joint 7
0.4 to 1 millimeter, the material of positive pole ear 6 and orifice plate 1 is aluminium, during welding, uses laser-beam welding machine to produce laser, and laser melts
Positive pole ear 6 and orifice plate 1, positive pole ear 6 and orifice plate 1 link together after cooling.The characteristics of the utility model, is：Solder joint 7
Partially overlap, reason for this is that the heat produced when under first solder joint weldering can form high temperature to positive pole around solder joint
Lug 6 is preheated, and second solder joint is welded in this region and avoids the need for too high energy, it is easier to weld, similarly the 3rd, the 4th
Individual solder joint all can before solder joint heat, therefore the power of bonding machine drops to 100W from 300W and still can realize well
Welding；Meanwhile, the diameter of welding region is no more than 1.5 millimeters, can entirely fall within lug 6, the moving displacement of welding machine is more
Small, efficiency and qualification rate are higher.Tensile strength to two kinds of welding carries out tensile test, the weld strength of the mode of utility model
Reach more than 800 gram forces, be twice of common mode, pulling force is more stable, can be preferably to being shaken during electrical resistance method use
The destruction of butt welding point.
Embodiment
It is specific as follows using a kind of 18650 battery of structure fabrication of utility model.
The block normally used using battery and positive pole ear, 2.5 millimeters of lug width, using 100W laser welding work(
Rate, is welded using 3 solder joint stacked systems, and the distance of superposition is that the centre-to-centre spacing of solder joint is equal to the half of spot size, butt welding
Connect intensity and carry out tensile test, pulling force reaches more than 800 gram forces.
It is only preferred embodiment of the present utility model in summary, not for limiting implementation model of the present utility model
Enclose.The equivalent changes and modifications that i.e. all contents according to present utility model application the scope of the claims are made, all should be of the present utility model
Technology category.
Claims (2)
1. a kind of block welding structure of lithium ion battery, positive pole ear（6）Block is welded on by more than two solder joints
Orifice plate（1）On；It is characterized in that：Each solder joint（7）Between partially overlap.
2. the block welding structure of lithium ion battery according to claim 1, it is characterised in that：Each solder joint（7）It is straight
0.4 to 1 millimeter of footpath, the diameter of welding region is no more than 1.5 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720037840.4U CN206464701U (en) | 2017-01-13 | 2017-01-13 | A kind of block welding structure of lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720037840.4U CN206464701U (en) | 2017-01-13 | 2017-01-13 | A kind of block welding structure of lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206464701U true CN206464701U (en) | 2017-09-05 |
Family
ID=59706239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720037840.4U Expired - Fee Related CN206464701U (en) | 2017-01-13 | 2017-01-13 | A kind of block welding structure of lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206464701U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106552994A (en) * | 2017-01-13 | 2017-04-05 | 上海德朗能动力电池有限公司 | A kind of block welding method of lithium ion battery and welding structure |
| CN113218760A (en) * | 2021-05-12 | 2021-08-06 | 江西迪比科股份有限公司 | Method for testing tension of welding spot of power cap of edge covering structure |
-
2017
- 2017-01-13 CN CN201720037840.4U patent/CN206464701U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106552994A (en) * | 2017-01-13 | 2017-04-05 | 上海德朗能动力电池有限公司 | A kind of block welding method of lithium ion battery and welding structure |
| CN113218760A (en) * | 2021-05-12 | 2021-08-06 | 江西迪比科股份有限公司 | Method for testing tension of welding spot of power cap of edge covering structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170905 Termination date: 20210113 |