CN207925588U - A kind of electrochemical appliance - Google Patents
A kind of electrochemical appliance Download PDFInfo
- Publication number
- CN207925588U CN207925588U CN201820138152.1U CN201820138152U CN207925588U CN 207925588 U CN207925588 U CN 207925588U CN 201820138152 U CN201820138152 U CN 201820138152U CN 207925588 U CN207925588 U CN 207925588U
- Authority
- CN
- China
- Prior art keywords
- cover board
- positive
- shell
- cathode
- negative electrode
- 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
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
Abstract
A kind of electrochemical appliance includes the shell equipped with opening, core is fixed in shell, core end is the full lug of anode and the full lug of cathode, the full tab welding positive electrode of anode, the full tab welding negative electrode of cathode, the opening of shell is welded and fixed cover board, and cover board is divided into positive cover board and cathode cover board；Positive cover board and cathode cover area are respectively less than the sectional area of opening in shell, positive electrode, negative electrode can be pierced by from cover board, shell is equipped with contraction flow region in the position coordinated with cover board, the area of section of contraction flow region is less than the area of section of shell, contraction flow region facilitates the tight fit for realizing shell and two end cover plate, and positive cover board is equipped with liquid injection hole.Compared with the existing technology, the technique effect of the utility model is that the utility model designs cover board and is less than shell, is gone through from enclosure interior after being in advance fixedly connected with core lug with electrode and cover board, is convenient for, into shell, being advantageously implemented automated production.
Description
Technical field
The utility model is related to electrochemical technology field, more particularly to a kind of electrochemistry device of high power high current charge-discharge
Part and preparation method thereof.
Background technology
With the development of modern electronic technology, the equipment of miniaturization is increasing, and very high requirement is proposed to power supply.Electricity
Chemical device enters the large-scale practical stage therewith.Electrochemical device early stage is used primarily in mobile phone and laptop etc.
On people's compact electric apparatus articles for use, with the development of technology with the expansion in field, electrochemical device starts to motorcycle, automobile, electronic
Tool, electric automobiles development, especially recent are used as the rapid but traditional electricity of automobile-used high-power charge and discharge power source development
Chemical device design uses box hat, the deriving structure of the designs such as aluminum plastic film or plastic housing, electric current to be designed by low current charge and discharge, it is difficult to hold
High current charge-discharge is carried, the using effect and loading demand of electrochemical device are influenced.
Utility model content
The technical problems to be solved of the utility model：Battery will say that battery core is firstly placed in shell, then in shell in assembly
The closure of cover board is completed in the end of body, finally fills electrolyte.According to the production technology needs of automation, now first by cover board with
Battery core is fixed as together, then so that cover board is located just at the end of shell, then complete cover board and shell longitudinally through shell it
Fixation, finally fill electrolyte.Problem is that general cover board profile is both greater than shell, can not be longitudinally through.
The utility model aim is：In view of the above-mentioned problems, proposing that a kind of internal resistance is lower, highly conductive, high heat conduction uses process
It is safer, the electrochemical appliance of high current charge-discharge can be carried, while additionally providing the preparation method of the electrochemical appliance.
The technical solution of the utility model is specially：
A kind of electrochemical appliance includes the shell equipped with opening, and core is fixed in shell, and core end is the full lug of anode
With the full lug of cathode, tab welding positive electrode, the full tab welding negative electrode of cathode, the opening of shell are welded and fixed lid to anode entirely
Plate, cover board are divided into positive cover board and cathode cover board；Positive cover board and cathode cover area are respectively less than the sectional area of opening in shell, just
Electrode, negative electrode can be pierced by from cover board, and shell is equipped with contraction flow region, the area of section of contraction flow region in the position coordinated with cover board
Less than the area of section of shell, contraction flow region facilitates the tight fit for realizing shell and two end cover plate, and positive cover board is equipped with fluid injection
Hole.
The positive full lug and welding of positive electrode, the full lug of cathode and negative electrode are welded as agitating friction weldering or ultrasonic wave
Welding.
Shell and cover board are welded as agitating friction weldering or Laser Welding.
The corner of cover board is equipped with the protrusion of evagination.
Protrusion is round or polygon.
It is designed with insulated enclosure circle between the positive electrode and positive cover board, between negative electrode and cathode cover board.
The positive and negative cover board is equipped with the hole to match with positive and negative electrode, keeps positive and negative electrode solid with positive and negative cover board respectively
It is fixed to be tightly connected.
Fixed seal connection between the positive and negative electrode and positive and negative cover board be bolted, rivet, jumping-up or stirring
Friction welding (FW).
Compared with the existing technology, the technique effect of the utility model is, the utility model designs cover board and is less than shell, can be with
It is gone through from enclosure interior after core lug is fixedly connected with electrode and cover board in advance, is convenient for, into shell, being advantageously implemented automatic
Metaplasia is produced.
Description of the drawings
Fig. 1 is the schematic diagram of the utility model（Electrode is in both sides）.
Fig. 2 is the schematic diagram of the utility model（Electrode is in side）.
Fig. 3 is the enlarged diagram in housing shrinkage portion.
Fig. 4 is the vertical view enlarged diagram in cover board corner when contraction flow region is not formed（The first situation）.
Fig. 5 is the vertical view enlarged diagram in cover board corner when contraction flow region is not formed（Second case）.
Fig. 6 is the schematic diagram of groove and backing plate cooperation.
Specific implementation mode
A kind of electrochemical appliance includes the shell 1 equipped with opening；Core 4 is fixed in shell 1, core end is that anode is complete
Lug and the full lug of cathode, the full tab welding positive electrode 5 of anode, the full tab welding negative electrode of cathode 6.The opening of shell 1 is welded
Fixed cover board 2 is connect, cover board 2 divides for positive cover board and cathode cover board；Positive cover board and cathode cover area are respectively less than opening in shell
Sectional area.Positive electrode 5, negative electrode 6 can be pierced by from cover board 2.
Shell 1 is equipped with contraction flow region 11 in the position coordinated with cover board 2, and the area of section of contraction flow region 11 is less than cutting for shell 1
Face area, contraction flow region 11 facilitates the tight fit for realizing shell and two end cover plate, then realizes tight fit portion by welding mean
The hermetically sealed welding of position, and positive cover board is equipped with liquid injection hole.
Positive full lug is welded as agitating friction weldering or ultrasound with the welding of positive electrode 5, the full lug of cathode with negative electrode 6
Wave soldering connects.
Shell 1 is welded as agitating friction weldering or Laser Welding with cover board 2.
When being shunk for square casing, active force is different, long short side shrinking percentage is different, in order to reduce between shell and cover board
Gap, the corner of cover board are equipped with the protrusion 21 of evagination, and protrusion 21 is circle（Referring to Fig. 4）Or polygon（Referring to Fig. 5）.
It is designed with insulated enclosure circle between the positive electrode and positive cover board, between negative electrode and cathode cover board.
The positive and negative cover board is equipped with the hole to match with positive and negative electrode, keeps positive and negative electrode solid with positive and negative cover board respectively
It is fixed to be tightly connected.Fixed seal connection between the positive and negative electrode and positive and negative cover board is to be bolted, rivet, jumping-up or stirring
Mix friction welding (FW).
The material of the positive electrode is aluminium, sectional area of the sectional area not less than the full lug of the anode.
The material of the negative electrode is copper, copper aluminum composite material or the connection of copper aluminium friction welding (FW), and sectional area is not less than described
The sectional area of the full lug of cathode.
Positive electrode 5, negative electrode 6 are distributed in the both ends of shell 1（Referring to Fig. 1）, one end of shell 1 can also be distributed in（Ginseng
See Fig. 2）.
In order to ensure that the electrochemical appliance can carry high current charge-discharge, positive and negative lug is all made of full extreme ear structure, tool
Body is：Positive full lug and the full lug of cathode are formed in core 4, and the full tab welding of anode is on positive switching piece 10, anode
Switching piece 10 is welded on positive electrode 5, and for the full tab welding of cathode on cathode switching piece 9, cathode switching piece 9 is welded on negative electrode
On 6, the sectional area of the full lug of anode is the product of the thickness and the length of positive plate substrate of positive plate substrate, the full lug of cathode
Sectional area is the product of the thickness of cathode plate substrate and the length of cathode plate substrate.
Positive switching piece 10 is fixedly connected using stirring friction-welding technique with positive full lug, so that the two is abundant
In conjunction with.And in order to further ensure positive switching piece 10 and the full lug of anode have sufficiently large contact area, and then make this
Electrochemical element can carry high current charge-discharge, and the sectional area of positive switching piece 10 is preferably not less than the section of the full lug of anode
Product.The material of positive switching piece 10 is generally pure aluminum or aluminum alloy, and this example is fine aluminium.
Based on same consideration, cathode switching piece 9 is fixedly connected using stirring friction-welding technique with the full lug of cathode, is born
The sectional area of pole switching piece 9 is not less than the sectional area of the full lug of cathode.The material of cathode switching piece 9 is generally fine copper or copper closes
Gold, this example are fine copper.
Positive electrode 5 is fixedly connected using friction welding (FW) or resistance-welding process with positive switching piece 10, and this example uses friction welding (FW), is
Ensure that positive electrode 5 and positive switching piece 10 have sufficiently large contact area, and then so that the electrochemical element is carried greatly
Current charging and discharging, the sectional area of positive electrode 5 are preferably not less than the sectional area of positive switching piece 10.The material of positive electrode 5 is generally
Pure aluminum or aluminum alloy, this example are fine aluminium.
Based on same consideration, positive electrode 6 is fixedly connected using same welding procedure with cathode switching piece, positive electrode 6
Sectional area is not less than the sectional area of cathode switching piece.The material of positive electrode 6 is generally fine copper or copper aluminum composite material, and this example is pure
Copper.
The advantages of present apparatus is：
1) cover board is less than shell, is worn from enclosure interior after being in advance fixedly connected with core lug with electrode and cover board
Past is convenient for, into shell, being advantageously implemented automated production；
2) positive and negative lug uses full extreme ear structure, accomplishes that lug guide flow cross section maximizes, improves leading for chemical component
Electricity, the capacity of heat transmission, convenient for large current charge, electric discharge.
The preparation method of above-mentioned electrochemical appliance：
The first step is formed without the shell 1 of contraction flow region 11 using aluminium or aluminium alloy as raw material using stretch forming process；
Positive cover board and cathode cover board is made using Sheet Metal Forming Technology as raw material using aluminium or aluminium alloy in second step；
Third walks, and core 4 is made using winding method, core 4 includes the full lug of anode and the full lug of cathode；
Positive electrode 5 is fixedly connected by the 4th step using agitating friction weldering or ultrasonic welding process with positive full lug；It adopts
Negative electrode 6 is fixedly connected with the full lug of cathode with agitating friction weldering or ultrasonic welding process；
5th step is connected by screw bolts, riveting process, upset forging process or Friction stir welding distinguish positive and negative electrode
With positive and negative cover board fixed seal connection, and between positive and negative electrode and positive and negative cover board be arranged insulated enclosure circle；
6th step, by the core 4 being fixed together, positive electrode 5, negative electrode 6, the whole opening from shell 1 of cover board 2 into
Enter inside it, the opening of shell 1 forms contraction flow region 11 to contract, completes the fixation of contraction flow region 11 and cover board 2；
7th step is injected electrolyte from positive cover board, is followed closely using Friction stir welding welded seal, this electrochemical appliance
Just it is made.
In above-mentioned 6th step, when contraction flow region 11 is formed, there are two types of methods：
The first：Make shell end to contract using electromagnetic pulse technique, forms contraction flow region 11, make shell 1 and cover board 2
Then joint close uses agitating friction weldering or Laser Welding to block the gap between shell 1 and cover board 2.This method electromagnetic pulse
Active force cannot be too big, if too big, can 2 blastic deformation of cover board be become waste product.So can be stayed between shell 1 and cover board 2
It has the gap, the needs of battery cannot be met, so wanting secondary operation（It is exactly that above-mentioned agitating friction weldering or Laser Welding block）, compare
Trouble.
Second：The primary tight fit for realizing shell 1 and cover board 2 and hermetically sealed welding are welded using electromagnetic pulse, realized
The sealed connection of shell and cover board.In this case, the active force of electromagnetic pulse is larger, can be by 2 blastic deformation of cover board.For this purpose,
Referring to Fig. 6, the outer end of cover board 2 is equipped with groove 25, and backing plate 30 is equipped in groove 25, and backing plate 30 is contacted with the cell wall 26 of groove 25,
When electromagnetic pulse welds operation（The impact zone of active force referring to Fig. 6 reference numeral 11,）, backing plate 30 can resist its active force,
Cover sheet 2 will not deform.It can process at one time in this way.
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 (8)
1. a kind of electrochemical appliance includes the shell equipped with opening, fix core in shell, core end be the full lug of anode and
The full lug of cathode, the full tab welding positive electrode of anode, the full tab welding negative electrode of cathode, the opening of shell are welded and fixed lid
Plate, cover board are divided into positive cover board and cathode cover board；Positive cover board and cathode cover area are respectively less than the sectional area of opening in shell, just
Electrode, negative electrode can be pierced by from cover board, it is characterised in that：Shell is equipped with contraction flow region in the position coordinated with cover board, shrinks
The area of section in portion is less than the area of section of shell, and contraction flow region facilitates the tight fit for realizing shell and two end cover plate, and anode
Cover board is equipped with liquid injection hole.
2. electrochemical appliance as described in claim 1, it is characterised in that：Positive full lug and the welding of positive electrode, cathode are complete
Lug and negative electrode are welded as agitating friction weldering or ultrasonic bonding.
3. electrochemical appliance as described in claim 1, it is characterised in that：Shell and cover board are welded as agitating friction weldering or swash
Flush weld.
4. electrochemical appliance as described in claim 1, it is characterised in that：The corner of cover board is equipped with the protrusion of evagination.
5. electrochemical appliance as claimed in claim 4, it is characterised in that：Protrusion is round or polygon.
6. electrochemical appliance as described in claim 1, it is characterised in that：Between the positive electrode and positive cover board, negative electrode
Insulated enclosure circle is designed between cathode cover board.
7. electrochemical appliance as described in claim 1, it is characterised in that：The positive and negative cover board is equipped with and positive and negative electrode phase
Identical hole, make positive and negative electrode respectively with positive and negative cover board fixed seal connection.
8. electrochemical appliance as claimed in claim 7, it is characterised in that：Fixation between the positive and negative electrode and positive and negative cover board
It is tightly connected to be bolted, riveting, jumping-up or agitating friction weldering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820138152.1U CN207925588U (en) | 2018-01-27 | 2018-01-27 | A kind of electrochemical appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820138152.1U CN207925588U (en) | 2018-01-27 | 2018-01-27 | A kind of electrochemical appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207925588U true CN207925588U (en) | 2018-09-28 |
Family
ID=63605627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820138152.1U Expired - Fee Related CN207925588U (en) | 2018-01-27 | 2018-01-27 | A kind of electrochemical appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207925588U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108493488A (en) * | 2018-01-27 | 2018-09-04 | 林州朗坤科技有限公司 | A kind of electrochemical appliance and preparation method thereof |
-
2018
- 2018-01-27 CN CN201820138152.1U patent/CN207925588U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108493488A (en) * | 2018-01-27 | 2018-09-04 | 林州朗坤科技有限公司 | A kind of electrochemical appliance and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207690847U (en) | Top cover structure of power battery, power battery and battery modules | |
| EP2339670B2 (en) | Battery module comprising a connecting member composed of first and second connecting bars | |
| CN105830253B (en) | Rectangular secondary cell | |
| US6156452A (en) | Non-aqueous electrolyte secondary cell | |
| CN100440602C (en) | Cylindrical lithium rechargeable battery and method for fabricating the same | |
| CN101916876B (en) | Method and design for externally applied laser welding of internal connections in a high power electrochemical cell | |
| US10147925B2 (en) | Square secondary battery | |
| US20230106855A1 (en) | Button cell and manufacturing method thereof and electronic equipment | |
| CN207753113U (en) | A kind of high usage electrochemical device | |
| CN108428819A (en) | Top cover structure of power battery | |
| JP2001135358A (en) | Sealed secondary battery | |
| CN218769992U (en) | Battery cell, battery and power consumption device | |
| CN207925588U (en) | A kind of electrochemical appliance | |
| CN109273660A (en) | Power battery top cover assembly, power battery and battery module | |
| CN106531447A (en) | Square battery capacitor | |
| CN108493488A (en) | A kind of electrochemical appliance and preparation method thereof | |
| CN101887959B (en) | Riveted low-internal-resistance energy storage device | |
| CN209104289U (en) | Secondary cell | |
| WO2023083060A1 (en) | Screw, connecting structure, battery and electric device | |
| WO2023226190A1 (en) | Battery assembly, battery, and electric vehicle | |
| CN103456914A (en) | Battery provided with a safety snap device and convenient to weld | |
| CN208723015U (en) | A kind of electrochemical appliance | |
| KR101297398B1 (en) | Battery Cell and Welding Method for Welding electrode lead of Battery Cell | |
| CN220358286U (en) | Module pole, battery cover plate and battery | |
| CN201853759U (en) | Split rivet-type energy storage device with low internal resistance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180928 Termination date: 20210127 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |