CN206464700U - 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
- CN206464700U CN206464700U CN201720037839.1U CN201720037839U CN206464700U CN 206464700 U CN206464700 U CN 206464700U CN 201720037839 U CN201720037839 U CN 201720037839U CN 206464700 U CN206464700 U CN 206464700U
- Authority
- CN
- China
- Prior art keywords
- lithium ion
- ion battery
- positive pole
- welding
- 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
Links
- 238000003466 welding Methods 0.000 title claims abstract description 33
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 20
- 229910000679 solder Inorganic materials 0.000 claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000009826 distribution Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000155 melt Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 230000003042 antagnostic effect Effects 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 230000011712 cell development Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- Connection Of Batteries Or Terminals (AREA)
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：Adjacent pad portion is overlapped and all solder joints form arranged in a straight line.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：With two or more solder joint, adjacent pad portion is overlapped and all solder joints form arranged in a straight line, when first
The heat produced when under solder joint weldering can form high temperature around solder joint and positive pole ear is preheated, and second solder joint is welded in this region
Avoid the need for too high energy, it is easier to weld, the heat of solder joint before follow-up solder joint can all be utilized；Welding machine machine only carries out one
The movement in individual direction.
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：Adjacent pad portion is overlapped and all solder joints form arranged in a straight line.
The utility model has the following advantages that：
The utility model improves the welding manner of lithium ion battery cover and positive pole ear, can to improve weld strength
Come off with effectively antagonizing during battery use due to shaking the lug caused, and welding difficulty can be reduced and improved produce
Efficiency, substandard products battery is produced caused by reducing the welding in production process.By the discrete distribution for the solder joint for changing laser welding
Realized for the linear distribution of superposition.
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, more than 2 solder joints can be typically welded on positive pole ear 6 come ensure welding intensity, solder joint 7 it is straight
The material of 0.4 to 1 millimeter of footpath, positive pole ear 6 and orifice plate 1 is aluminium, during welding, and laser is produced using laser-beam welding machine, and laser melts
Change 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：It is adjacent
Solder joint 7 partially overlap and all solder joints form arranged in a straight line, reason for this is that what is produced when under first solder joint weldering
Heat can form high temperature around solder joint and lug is preheated, and second solder joint is welded in this region and avoids the need for too high energy,
Easily weld, similarly the 3rd, the 4th solder joint all can before solder joint heat, therefore bonding machine power from 300W
Dropping to 100W still can realize good welding；It can ensure that more solder joints fall on lug 6, even if part solder joint is super
Enough weld strengths can also be provided by going out lug, and welding machine machine only carries out the movement of X-direction, without the movement of Y-direction, efficiency
It is higher with qualification rate.Tensile strength to two kinds of welding carries out tensile test, and the weld strength of the mode of utility model reaches
More than 1200 gram forces, it is three times of common mode, pulling force is more stable, can be preferably to shaking butt welding during electrical resistance method use
The destruction of 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 1200 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 (1)
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：Adjacent solder joint（7）Partially overlap and all solder joints form arranged in a straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720037839.1U CN206464700U (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 |
|---|---|---|---|
| CN201720037839.1U CN206464700U (en) | 2017-01-13 | 2017-01-13 | A kind of block welding structure of lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206464700U true CN206464700U (en) | 2017-09-05 |
Family
ID=59705386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720037839.1U Expired - Fee Related CN206464700U (en) | 2017-01-13 | 2017-01-13 | A kind of block welding structure of lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206464700U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106735898A (en) * | 2017-01-13 | 2017-05-31 | 上海德朗能动力电池有限公司 | The block welding method and welding structure of a kind of lithium ion battery |
-
2017
- 2017-01-13 CN CN201720037839.1U patent/CN206464700U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106735898A (en) * | 2017-01-13 | 2017-05-31 | 上海德朗能动力电池有限公司 | The block welding method and welding structure of a kind of lithium ion battery |
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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 |