CN100561771C - A kind of cylindrical lithium ion cell cap and assembly method - Google Patents
A kind of cylindrical lithium ion cell cap and assembly method Download PDFInfo
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- CN100561771C CN100561771C CNB2008100412773A CN200810041277A CN100561771C CN 100561771 C CN100561771 C CN 100561771C CN B2008100412773 A CNB2008100412773 A CN B2008100412773A CN 200810041277 A CN200810041277 A CN 200810041277A CN 100561771 C CN100561771 C CN 100561771C
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- vibration damper
- damper plate
- conduction vibration
- lithium ion
- explosion
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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
Abstract
The invention belongs to reusable secondary power supply (rechargeable battery) technical field, be applied to lithium ion battery, particularly a kind of cylindrical lithium ion cell cap and assembly method.It comprises by sealing ring seals anodal bringing-out, PTC, explosion-proof aluminium cake, supporting bracket and the conduction vibration damper plate of establishing, soldering polar ear under the described conduction vibration damper plate from top to bottom successively; This conduction vibration damper plate has the pad that is used for explosion-proof aluminium cake welding, and this pad relies on rib to be connected with other position of conduction vibration damper plate.The assembly method step is: fluid injection, and the ultra-sonic welded block seals; Or the ultra-sonic welded block, fluid injection is sealed.Use the vibration of ultrasonic bonding will make the solder joint fracture if it mainly solves existing structure, the technical problem of block inefficacy can be used the assembling of ultrasonic bonding and battery roll core simultaneously, can improve technological process, improve the efficient minimizing equipment investment of producing.
Description
Technical field
The invention belongs to reusable secondary power supply (rechargeable battery) technical field, be applied to lithium ion battery, particularly a kind of cylindrical lithium ion cell cap and assembly method.
Background technology
On the mobile office equipment that trend miniaturization, lightweight direction develop, as equipment such as digital camera, Digital Video, mobile DVD, MP3, notebook computers, the application of high-performance cylindrical lithium ion secondary cell is very extensive.But when battery is subjected to short circuit, high heat, during the influencing of abnormal factors such as overcharge, battery case inside has gases at high pressure to produce easily, can cause the distortion of battery case (battery case) and produce danger such as blast.For it can more safely be used; just need to use battery safety valve to be assemblied in the battery; when the battery case internal pressure rose to abnormality, this cracking formula safety valve can promptly be opened and gas is discharged, and plays the safeguard protection effect under the abnormal conditions.In order to solve the problem of fail safe, battery has adopted various safety measures, as add PCM (baffle), dress safety valve, PTC modes such as (thermistors) are improved security performance, reduce the possibility of causing danger.
The structural design of the block of battery be battery do one of pith, main release mechanism all designs in the block the inside, inside installed PTC additional, the safety valve of cracking formula is arranged (explosion-proof aluminium cake) and internal high pressure open circuit protection.Various safety valves play an important role to the security performance raising of battery, have also brought difficulty and the cost made to improve, and efficient reduces.
In traditional capping structure; use laser welding with orifice plate and the welding of explosion-proof aluminium cake; the tilting force of the weld strength of solder joint and aluminium cake has determined the open circuit protection pressure of block; lug connects volume core and block; on this structural design, can only use laser welding welding orifice plate and lug; because if use the vibration of ultrasonic bonding will make the solder joint fracture, block lost efficacy.
Adopt the process route of original structure block to have following two kinds:
1) laser welding block, fluid injection is sealed
2) fluid injection is sealed, the laser welding block
Above laser welding block operation is used laser-beam welding machine, must isolate with the environment of fluid injection, because there is solvent in the environment of fluid injection, the spark of laser welding may cause danger, so cause this process flow discontinuous, and fluid injection is to carry out in anhydrous glove box, and the environment that the battery that such process flow need be finished fluid injection is transferred to the another one drying carries out laser welding, causes operation discontinuous; The equipment cost input cost height of laser welding, ten thousand yuan of unit 10-15, efficient is 10-14/minute.
Summary of the invention
The object of the present invention is to provide a kind of cylindrical lithium ion cell cap and assembly method, use the vibration of ultrasonic bonding will make the solder joint fracture if mainly solve existing structure, the technical problem that block lost efficacy, can use simultaneously the assembling of ultrasonic bonding and battery roll core, can improve technological process, improve the efficient minimizing equipment investment of producing.
For achieving the above object, technical scheme of the present invention is:
A kind of cylindrical lithium ion cell cap is characterized in that: it comprises by sealing ring seals anodal bringing-out, PTC, explosion-proof aluminium cake, supporting bracket and the conduction vibration damper plate of establishing, soldering polar ear under the described conduction vibration damper plate from top to bottom successively; This conduction vibration damper plate has the pad that is used for explosion-proof aluminium cake welding, and this pad relies on rib to be connected with other position of conduction vibration damper plate.
Described cylindrical lithium ion cell cap is characterized in that: this pad relies on radial rib to be connected with other position of conduction vibration damper plate.
Described cylindrical lithium ion cell cap is characterized in that: the width of this rib is 0.5mm.
A kind ofly be used to assemble the method for battery cap as mentioned above, it is characterized in that the step that it comprises is: fluid injection, the ultra-sonic welded block seals.
A kind ofly be used to assemble the method for battery cap as mentioned above, it is characterized in that the step that it comprises is: the ultra-sonic welded block, fluid injection is sealed.
By said structure, the present invention mainly has following advantage:
1, among the present invention, the pad of conduction vibration damper plate is tiny rib with being connected of other position of conduction vibration damper plate, width 0.5mm, Vibrant buffer in the time of can be effectively with ultra-sonic welded, thereby do not influence the intensity of the solder joint between explosion-proof aluminium cake and the conduction vibration damper plate, thereby the mode that can use ultra-sonic welded is welded conduction vibration damper plate and lug, certainly, this structure also can use the mode of laser welding to assemble, the effect of supporting bracket is the pressure of anchor clamps when being used to support ultra-sonic welded, in order to avoid the conduction vibration damper plate of thin thickness is extruded distortion.
2, structure of the present invention can be used ultrasonic bonding and battery roll core assembling, can improve technological process, improve the efficient minimizing equipment investment of producing.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the structural representation of conduction vibration damper plate among the present invention.
Fig. 3 be among the present invention explosion-proof aluminium cake and the conduction vibration damper plate the syndeton schematic diagram.
Embodiment
See also Fig. 1-3, it is the structural representation of a kind of cylindrical lithium ion cell cap of the present invention.As shown in the figure: it comprises by sealing ring 1 seals anodal bringing-out 2, PTC3, explosion-proof aluminium cake 4, supporting bracket 5 and the conduction vibration damper plate of establishing 6,6 times soldering polar ears 15 of described conduction vibration damper plate from top to bottom successively; This conduction vibration damper plate 6 has the pad 10 that is used for explosion-proof aluminium cake 4 welding, and this pad 10 relies on rib 11 to be connected with other position of conduction vibration damper plate 6.As Fig. 2, this pad 10 relies on radial rib 11 to be connected with other position of conduction vibration damper plate 6, and the width of this rib 11 is 0.5mm.
Among the present invention, keep original loam cake, sealing ring, PTC, explosion-proof aluminium cake structure, changed the structure of original orifice plate, change to supporting bracket and conduction vibration damper plate, the variation by these structures has realized new function.Be provided with pressure action protection (when cell internal pressure forms open circuit protection greater than 1.5 kilograms of pressure the time), safety valve (being used to discharge too high interior pressure), PTC (short-circuit protection) in the block; changed the part-structure of original block; do not lose above function; can use simultaneously the assembling of ultrasonic bonding and battery roll core, can improve technological process, improve the efficient minimizing equipment investment of producing.
Among the present invention, the pad of conduction vibration damper plate is tiny rib with being connected of other position of conduction vibration damper plate, width 0.5mm, Vibrant buffer in the time of can be effectively with ultra-sonic welded, thereby do not influence the intensity of the solder joint between explosion-proof aluminium cake and the conduction vibration damper plate, thereby the mode that can use ultra-sonic welded is welded conduction vibration damper plate and lug, certainly, this structure also can use the mode of laser welding to assemble, the effect of supporting bracket is the pressure of anchor clamps when being used to support ultra-sonic welded, in order to avoid the conduction vibration damper plate of thin thickness is extruded distortion.
Adopt the process route of structure block of the present invention to have following several:
1) fluid injection, the ultra-sonic welded block seals
2) ultra-sonic welded block, fluid injection is sealed
Above ultra-sonic welded block operation is used ultrasonic welding machine, can carry out in the environment of fluid injection, and this process flow is continuous, and the equipment input cost of ultra-sonic welded is low, ten thousand yuan of unit 3-5, and efficient is 15-20/minute.
Comparatively speaking, design of the present invention is more reasonable, practical, has good efficiency and benefit.
Embodiment: a block that is applied to cylindrical lithium ion battery 18650.
Sealing ring 1, anodal bringing-out (loam cake) 2, PTC 3 and explosion-proof aluminium cake 4 adopt general design, and its size, material are not done change.Die-cut the forming of almag sheet material that supporting bracket 5 adopts thickness 0.5mm, external diameter 13.8mm, central through hole diameter 3.5mm, ventilative Circularhole diameter 1.8mm.Die-cut the forming of almag sheet material that conduction vibration damper plate 6 adopts thickness 0.2mm, use after 400 degrees centigrade of annealing, center bonding pads 10 diameter 3mm, projection 1.5mm, ventilative square hole 9 outside diameter 6.5mm, rib 11 width 0.5mm, assembling mode are with general assembling mode, and the mode that promptly adopts laser welding is with explosion-proof aluminium cake 4 and two solder joints of conduction vibration damper plate 6 welding.Adopt laser welding and ultrasonic bonding dual mode and lug 15 to weld the test effect block and the general block that assemble, test 10 respectively.
The soldering test table of comparisons
Being preferred embodiments of the present invention only in sum, is not to be used for limiting practical range of the present invention.Be that all equivalences of doing according to the content of the present patent application claim change and modification, all should be technology category of the present invention.
Claims (3)
1, a kind of cylindrical lithium ion cell cap, it is characterized in that: it comprises by sealing ring (1) seals anodal bringing-out (2), PTC (3), explosion-proof aluminium cake (4), supporting bracket (5) and the conduction vibration damper plate of establishing (6) from top to bottom successively, and described conduction vibration damper plate (6) is soldering polar ear (15) down; This conduction vibration damper plate (6) has the pad (10) that is used for explosion-proof aluminium cake (4) welding, and this pad (10) relies on rib (11) to be connected with other position of conduction vibration damper plate (6); The width of this rib (11) is 0.5mm.
2, a kind ofly be used to assemble the method for battery cap according to claim 1, it is characterized in that the step that it comprises is: fluid injection, the ultra-sonic welded block seals.
3, a kind ofly be used to assemble the method for battery cap according to claim 1, it is characterized in that the step that it comprises is: the ultra-sonic welded block, fluid injection is sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100412773A CN100561771C (en) | 2008-08-01 | 2008-08-01 | A kind of cylindrical lithium ion cell cap and assembly method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100412773A CN100561771C (en) | 2008-08-01 | 2008-08-01 | A kind of cylindrical lithium ion cell cap and assembly method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101335335A CN101335335A (en) | 2008-12-31 |
| CN100561771C true CN100561771C (en) | 2009-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2008100412773A Expired - Fee Related CN100561771C (en) | 2008-08-01 | 2008-08-01 | A kind of cylindrical lithium ion cell cap and assembly method |
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| CN (1) | CN100561771C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102034939A (en) * | 2009-09-28 | 2011-04-27 | 深圳市比克电池有限公司 | Battery cap assembly and battery |
| CN101752542A (en) * | 2009-12-28 | 2010-06-23 | 山东神工电池新科技有限公司 | Manufacturing method for avoiding problem of faulty soldering of tab and cover plate |
| CN101800296A (en) * | 2010-03-16 | 2010-08-11 | 周卫炳 | Explosion-proof combined block of high-rate cylindrical lithium ion battery |
| CN106549120A (en) * | 2016-12-12 | 2017-03-29 | 苏州安靠电源有限公司 | Anode block and the battery with the block |
| CN106992272A (en) * | 2017-03-30 | 2017-07-28 | 河南新太行电源股份有限公司 | A kind of enclosuring structure of cadmium-nickel accumulator |
| CN110091172B (en) * | 2019-05-24 | 2020-12-08 | 惠州金源精密自动化设备有限公司 | Assembly mechanism and heat seal riveting machine |
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2008
- 2008-08-01 CN CNB2008100412773A patent/CN100561771C/en not_active Expired - Fee Related
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| CN101335335A (en) | 2008-12-31 |
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Owner name: SHANGHAI DLG POWER BATTERY CO., LTD. Free format text: FORMER OWNER: SHANGHAI DLG BATTERY CO., LTD. Effective date: 20100819 |
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Free format text: CORRECT: ADDRESS; FROM: 201406 NO. 3492, JINQIAN HIGHWAY, GUANGMING TOWN, FENGXIAN DISTRICT, SHANGHAI CITY TO: 201406 NO. 3492, JINQIAN HIGHWAY, QINGCUN TOWN, FENGXIAN DISTRICT, SHANGHAI CITY |
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Effective date of registration: 20100819 Address after: 201406 Fengxian District Green Town, Village Road, No. 3492, money Patentee after: DLG POWER BATTERY (SHANGHAI) CO.,LTD. Address before: 201406, No. 3492, Qian Qian Road, Guangming town, Shanghai, Fengxian District Patentee before: SHANGHAI DLG BATTERY Co.,Ltd. |
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| 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: 20091118 Termination date: 20210801 |