CN207753113U - A kind of high usage electrochemical device - Google Patents
A kind of high usage electrochemical device Download PDFInfo
- Publication number
- CN207753113U CN207753113U CN201820138157.4U CN201820138157U CN207753113U CN 207753113 U CN207753113 U CN 207753113U CN 201820138157 U CN201820138157 U CN 201820138157U CN 207753113 U CN207753113 U CN 207753113U
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- China
- Prior art keywords
- positive
- cover board
- cathode
- shell
- electrochemical device
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- Expired - Fee Related
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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
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- Sealing Battery Cases Or Jackets (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
A kind of high usage electrochemical device, it include the tubular structure bottom of with, its cross sectional shape is the shell of rectangle, it is core in shell, its negative pole end is the bottom surface of outer gibbosity, and the central part of bottom surface is equipped with circular through hole, positive end opening, the opening welds the cover board of outer gibbosity, and cover plate central is equipped with circular through hole；Space of the core full of not evagination, the coiled material at both ends extend to the space of evagination, are respectively formed positive full lug and the full lug of cathode；Positive full tab welding Positive Poles, the positive cartridge of Positive Poles are pierced by from the circular through hole of cover board, are arranged sealing ring outside positive cartridge, sealing ring is between Positive Poles and cover board；Cathode full tab welding cathode pole is pierced by the circular through hole of the negative pole head bottom surface of cathode pole.Compared with the existing technology, the technique effect of the utility model is that the cover board and housing bottom of the utility model use boss structure, greatly improve battery case inner space, improve battery energy density.
Description
Technical field
The utility model is related to a kind of electrochemical devices and preparation method thereof of high power high current charge-discharge, belong to electrification
Field.
Background technology
At present due to lithium battery have many advantages, such as it is bigger than energy, have extended cycle life, quick charge, have a safety feature, in intelligence
It is widely used in the equipment such as energy mobile phone, wearable device, electric bicycle and new-energy automobile, becomes solution energy crisis
With the key of the global problems such as environmental pollution.With increasingly perfect, electric vehicle and the hybrid electric vehicle of electric vehicle engineering
More and more closer from daily life, the security performance of rectangular aluminum hull power battery receives more and more attention, while high
Power, the demand of high current charge-discharge are increasing.Existing rectangular aluminum hull power battery generally uses laser welding technology, aluminium
The laser welding difficulty of material is bigger, such as：Welding trace surface bulge problem, stomata problem, fried fiery problem etc. can be faced.These are asked
Topic all can generate tremendous influence to the security performance of battery.
Utility model content
The purpose of this utility model is to propose space availability ratio higher in a kind of shell, welding safer using process more
Fast, welded seal performance is more preferable, can carry the electrochemical device of high current charge-discharge, while additionally providing the electrochemistry device
The preparation method of part.
The technical solution of the utility model is specially：
A kind of high usage electrochemical device, includes the tubular structure bottom of with, and cross sectional shape is the shell of rectangle, shell
Interior is core, and negative pole end is the bottom surface of outer gibbosity, and the central part of bottom surface is equipped with circular through hole, positive end opening, the opening
The cover board of place's welding outer gibbosity, cover plate central are equipped with circular through hole；Space of the core full of not evagination, the coiled material at both ends prolong
The space for reaching evagination is respectively formed positive full lug and the full lug of cathode；Positive full tab welding Positive Poles, Positive Poles
Positive cartridge be pierced by from the circular through hole of cover board, sealing ring is arranged outside positive cartridge, sealing ring is located at Positive Poles and covers
Between plate；Cathode full tab welding cathode pole is pierced by the circular through hole of the negative pole head bottom surface of cathode pole, negative pole head
It is arranged sealing ring outside, sealing ring is between cathode pole and bottom surface；The end of positive cartridge is shape of threads, screw-thread fit spiral shell
Mother, positive cartridge cover insulation gasket, insulation spacer is between nut and cover board；The end of negative pole head is shape of threads,
Screw-thread fit nut, negative pole head cover insulation gasket, insulation spacer is between nut and bottom surface.
Shell and cover board are welded as Laser Welding.
The welding of positive full lug and the welding of Positive Poles, the full lug of cathode and cathode pole is all ultrasonic bond.
The surrounding of the positive terminal of shell strikes out step structure, and cover board welding machine is in the step structure.
Permeability aerobic sealing glue-line is smeared outside the commissure of cover board and shell.
The contact surface of positive cartridge, negative pole head and nut smears thread seal glue-line.
Insulation spacer upper and lower surface applies flat seal glue-line.
The nut adds the dual fixation of Laser Welding with positive cartridge, negative pole head screw thread.
Shell is molded using drawing process.
The Positive Poles material is aluminum or aluminum alloy, and the cathode pole material is that aluminium is connected with copper, is connect with lug
Part be aluminium, negative pole head part be copper.
Compared with the existing technology, the technique effect of the utility model is that the cover board and housing bottom of the utility model use
Boss structure greatly improves battery case inner space, improves battery energy density.
Description of the drawings
Fig. 1 is the schematic diagram of the utility model.
Fig. 2 is negative terminal and negative pole lug welding schematic diagram.
Fig. 3 is that positive terminal welds schematic diagram with anode ear.
Fig. 4 is positive terminal structural schematic diagram.
Fig. 5 is negative terminal structural schematic diagram.
Specific implementation mode
Such as Fig. 1-5, a kind of electrochemical device includes the tubular structure bottom of with, and cross sectional shape is the shell 1 of rectangle, shell
It is core 3, negative pole end in body 1（The lower part of Fig. 1）Central part for the bottom surface 11 of outer gibbosity, bottom surface 11 is equipped with circular through hole
12, positive terminal（The top of Fig. 1）Opening, the opening weld the cover board 2 of outer gibbosity, and 2 center of cover board is equipped with circular through hole 12.
Space of the core 3 full of not no evagination, the space that the coiled material at both ends extends to evagination are respectively formed the full pole of anode
The full lug of ear 4 and cathode 5.
Positive full lug 4 welds Positive Poles 6, and the positive cartridge 61 of Positive Poles 6 is worn from the circular through hole 12 of cover board 2
Go out.It is arranged sealing ring 8 outside positive cartridge 61, sealing ring 8 is between Positive Poles 6 and cover board 2.
The full lug 5 of cathode welds cathode pole 7, is worn in the circular through hole 12 of 71 bottom surface 11 of negative pole head of cathode pole 7
Go out.It is arranged sealing ring 8 outside negative pole head 71, sealing ring 8 is between cathode pole 7 and bottom surface 11.
The end of positive cartridge 61 is shape of threads（Referring to reference numeral 62）, screw-thread fit nut 9, outside positive cartridge 61
Insulation spacer 10 is covered, insulation spacer 10 is between nut 9 and cover board 2.
The end of negative pole head 71 is shape of threads（Referring to reference numeral 72）, screw-thread fit nut 9, outside negative pole head 71
Insulation spacer 10 is covered, insulation spacer 10 is between nut 9 and bottom surface 11.
Shell 1 is welded as Laser Welding with cover board 2.
The welding of positive full lug 4 and the welding of Positive Poles 6, the full lug 5 of cathode and cathode pole 7 is all ultrasonic bond.
The laser of Laser Welding is mapped to from the gap of shell 1 and cover board 2 in shell 1 in order to prevent, the positive terminal of shell 1
Surrounding strikes out step structure, and 2 welding machine of cover board is in the step structure, in this way, the contact surface of shell 1 and cover board 2 is L shapes,
The laser of Laser Welding can be prevented to be mapped in shell 1 from the gap of shell 1 and cover board 2.
In order to which sealing effect is good, cover board 2 and smearing permeability aerobic sealing glue-line outside the commissure of shell 1.
In order to which sealing effect is good, positive cartridge 61, negative pole head 71 and the contact surface of nut smear thread seal glue-line.
In order to which sealing effect is good, 10 upper and lower surface of insulation spacer applies flat seal glue-line.
The nut 9 adds the dual fixation of Laser Welding with positive cartridge 61,71 screw thread of negative pole head.
Shell 1 is molded using drawing process.
The Positive Poles material is aluminum or aluminum alloy.
The cathode pole material is that aluminium is connected with copper, and the part being connect with lug is aluminium, and 71 part of negative pole head is copper.
Preparation method includes：
1, using aluminium as raw material, structure of the bottom boss containing circular hole is made using the method for punching stretch forming, simultaneously
Surrounding step structure is struck out at other end edge；
2, using aluminium as raw material, middle part structure of the boss containing circular hole is made using impact forming method；
3, core is made by the way of winding, including the full lug of anode and the full lug of cathode；
4, cathode pole is fixedly connected using ultrasonic wave butterfly Welding with the full lug of cathode, folder is welded using ultrasonic wave
Positive terminal is fixedly connected by technique with positive full lug；
5, positive terminal, negative terminal and core are positioned in shell and cover board is fixed on by shell using laser welding process
On, and smear permeability anaerobic sealer, such as happy safe 290 type glue in commissure.
6, insulation spacer applies flat sealant, such as happy safe 518 type glue, and pole screw thread applies screw thread fastening glue, such as happy safe
272, then locking nut, using laser welding fixing nut and pole again.Final injection electrolyte.
Shell is molded using drawing process, and bottom boss and hole are made of Sheet Metal Forming Technology, and shell strikes out inside upper end
Step structure；Cover board is fabricated to middle part boss structure using Sheet Metal Forming Technology, and centre strikes out circular hole；Cover board uses laser welding side
Formula is fixed on shell upper end, and on the one hand shell upper end surrounding step structure is conducive to cover board positioning, on the other hand can in welding
To effectively prevent laser to enter enclosure interior, diaphragm injury is caused, avoids internal short-circuit of battery；It smears and oozes in commissure after welding
Permeability anaerobic sealer effectively seals against hole and is less than the holes below 0.125mm, greatly improves the reliability sealed after welding；
Cover board and housing bottom use boss structure, greatly improve battery case inner space, improve battery energy density.
Core is placed in enclosure interior, Positive Poles in upper end, cathode pole in bottom end, core include positive plate, negative plate,
Diaphragm is made of full lug winding method, and when winding is sequentially placed negative plate, diaphragm, positive plate, diaphragm.To ensure to carry
High current charge-discharge, positive and negative lug are all made of full extreme ear structure.Cathode using ultrasonic wave butterfly Welding be the full lug of cathode with
Negative terminal connects, as shown in Figure 2.
Anode is that positive full lug is connect with positive terminal to folder weldering Welding using ultrasonic wave, as shown in Figure 3.
Ensure that the device carries high current charge-discharge, positive terminal column part sectional area is preferably not less than the full lug of anode
Sectional area, negative terminal column part sectional area are preferably not less than the sectional area of the full lug of cathode.
The material of positive terminal is pure aluminum or aluminum alloy, and structure is as shown in Figure 4.
The material of negative terminal is copper aluminum composite material, and the part being connect with lug is aluminium, and column part is copper, and structure is as schemed
Shown in 5, production method can be directly to use copper aluminum composite material, copper aluminium friction welding (FW), copper aluminium riveted structure.
The advantages of the application is：
1, opening in shell inner end portion strikes out surrounding step structure, is on the one hand conducive to cover board positioning, on the other hand exists
Laser can be effectively prevent to enter enclosure interior when welding, cause diaphragm injury, avoid internal short-circuit of battery；
2, cover board and housing bottom use boss structure, greatly improve battery case inner space, and it is close to improve the energy content of battery
Degree；
3, after cover board and case weld, permeability anaerobic sealer is smeared in commissure, hole is effectively sealed against and is less than
The holes below 0.125mm, greatly improve the reliability sealed after welding, and felt pad surface smear flat sealant improves junction
Leakproofness, effectively prevent shell electrolyte inside overflow；
4, screw thread fastening glue is smeared at pole screw thread, effectively prevent the loosening being threadedly coupled and leakage, improves cell safety
Performance.
Other content participates in the prior art.
Above-described is only preferred embodiments of the present invention, it is noted that for those skilled in the art
For, under the premise of not departing from the utility model general idea, several changes and improvements can also be made, these should also be considered as
The scope of protection of the utility model.
Claims (10)
1. a kind of high usage electrochemical device, includes the tubular structure bottom of with, cross sectional shape is the shell of rectangle, feature
It is：It is core in shell, negative pole end is the bottom surface of outer gibbosity, and the central part of bottom surface is equipped with circular through hole, and positive terminal is opened
Mouthful, which welds the cover board of outer gibbosity, and cover plate central is equipped with circular through hole；
Space of the core full of not no evagination, the coiled material at both ends extend to the space of evagination, be respectively formed positive full lug with
The full lug of cathode；
Positive full tab welding Positive Poles, the positive cartridge of Positive Poles are pierced by from the circular through hole of cover board, positive cartridge
It is arranged sealing ring outside, sealing ring is between Positive Poles and cover board；
Cathode full tab welding cathode pole is pierced by the circular through hole of the negative pole head bottom surface of cathode pole, outside negative pole head
It is arranged sealing ring, sealing ring is between cathode pole and bottom surface；
The end of positive cartridge is shape of threads, and screw-thread fit nut, positive cartridge cover insulation gasket, insulation spacer is located at spiral shell
Between female and cover board；
The end of negative pole head is shape of threads, and screw-thread fit nut, negative pole head cover insulation gasket, insulation spacer is located at spiral shell
Between female and bottom surface.
2. high usage electrochemical device as described in claim 1, it is characterised in that：Shell and cover board are welded as laser
Weldering.
3. high usage electrochemical device as described in claim 1, it is characterised in that：The weldering of positive full lug and Positive Poles
It connects, the welding of the full lug of cathode and cathode pole is all ultrasonic bond.
4. high usage electrochemical device as described in claim 1, it is characterised in that：The surrounding punching press of the positive terminal of shell
At step structure, cover board welding machine is in the step structure.
5. high usage electrochemical device as described in claim 1, it is characterised in that：It is smeared outside the commissure of cover board and shell
Permeability aerobic sealing glue-line.
6. high usage electrochemical device as described in claim 1, it is characterised in that：Positive cartridge, negative pole head and nut
Contact surface smear thread seal glue-line.
7. high usage electrochemical device as described in claim 1, it is characterised in that：It is close that insulation spacer upper and lower surface applies plane
Adhesive layer.
8. high usage electrochemical device as described in claim 1, it is characterised in that：The nut and positive cartridge, cathode
Cartridge screw thread adds the dual fixation of Laser Welding.
9. high usage electrochemical device as described in claim 1, it is characterised in that：Shell is molded using drawing process.
10. high usage electrochemical device as described in claim 1, it is characterised in that：The Positive Poles material be aluminium or
Aluminium alloy, the cathode pole material are that aluminium is connected with copper, and the part being connect with lug is aluminium, and negative pole head part is copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820138157.4U CN207753113U (en) | 2018-01-27 | 2018-01-27 | A kind of high usage electrochemical device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820138157.4U CN207753113U (en) | 2018-01-27 | 2018-01-27 | A kind of high usage electrochemical device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207753113U true CN207753113U (en) | 2018-08-21 |
Family
ID=63154297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820138157.4U Expired - Fee Related CN207753113U (en) | 2018-01-27 | 2018-01-27 | A kind of high usage electrochemical device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207753113U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110854425A (en) * | 2019-11-01 | 2020-02-28 | 广州鹏辉能源科技股份有限公司 | Battery, winding body and current collecting disc |
| CN113809443A (en) * | 2021-08-24 | 2021-12-17 | 贵阳比耐新能源科技有限公司 | Cylindrical aluminum shell battery and manufacturing method thereof |
| WO2021253358A1 (en) * | 2020-06-18 | 2021-12-23 | 宁德新能源科技有限公司 | Battery and electrical apparatus having same |
| CN114421064A (en) * | 2021-12-31 | 2022-04-29 | 天津市捷威动力工业有限公司 | Battery and battery assembling method |
| CN114824599A (en) * | 2022-04-15 | 2022-07-29 | 天津市捷威动力工业有限公司 | Aluminum shell structure, preparation method, battery and assembly method |
| CN116014304A (en) * | 2023-03-30 | 2023-04-25 | 宁德新能源科技有限公司 | Electrochemical device and electric equipment |
-
2018
- 2018-01-27 CN CN201820138157.4U patent/CN207753113U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110854425A (en) * | 2019-11-01 | 2020-02-28 | 广州鹏辉能源科技股份有限公司 | Battery, winding body and current collecting disc |
| WO2021253358A1 (en) * | 2020-06-18 | 2021-12-23 | 宁德新能源科技有限公司 | Battery and electrical apparatus having same |
| CN115398719A (en) * | 2020-06-18 | 2022-11-25 | 宁德新能源科技有限公司 | Battery and electric device with same |
| CN113809443A (en) * | 2021-08-24 | 2021-12-17 | 贵阳比耐新能源科技有限公司 | Cylindrical aluminum shell battery and manufacturing method thereof |
| CN114421064A (en) * | 2021-12-31 | 2022-04-29 | 天津市捷威动力工业有限公司 | Battery and battery assembling method |
| CN114824599A (en) * | 2022-04-15 | 2022-07-29 | 天津市捷威动力工业有限公司 | Aluminum shell structure, preparation method, battery and assembly method |
| CN116014304A (en) * | 2023-03-30 | 2023-04-25 | 宁德新能源科技有限公司 | Electrochemical device and electric equipment |
| CN116014304B (en) * | 2023-03-30 | 2023-07-21 | 宁德新能源科技有限公司 | Electrochemical device and electric equipment |
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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: 20180821 Termination date: 20210127 |