CN108735962A - Battery cover plate and aluminum-shell battery - Google Patents
Battery cover plate and aluminum-shell battery Download PDFInfo
- Publication number
- CN108735962A CN108735962A CN201810805797.0A CN201810805797A CN108735962A CN 108735962 A CN108735962 A CN 108735962A CN 201810805797 A CN201810805797 A CN 201810805797A CN 108735962 A CN108735962 A CN 108735962A
- Authority
- CN
- China
- Prior art keywords
- battery
- positive
- cover board
- battery cover
- aluminum
- 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.)
- Withdrawn
Links
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 29
- 229910052782 aluminium Inorganic materials 0.000 claims description 26
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 abstract description 17
- 238000004880 explosion Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 230000007306 turnover Effects 0.000 abstract 3
- 239000004411 aluminium Substances 0.000 description 21
- 229910000906 Bronze Inorganic materials 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000013112 stability test Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/578—Devices or arrangements for the interruption of current in response to pressure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/20—Pressure-sensitive devices
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a battery cover plate and an aluminum-shell battery, wherein the battery cover plate comprises: the cathode comprises a top cover, a cathode column, a cathode connecting sheet and a cathode connecting sheet, wherein the cathode connecting sheet and the anode connecting sheet are of a flexible structure formed by overlapping a plurality of layers of sheets. The tab connecting sheet is arranged into a flexible structure with small rigidity and easy deformation, so that the stress is reduced, the welding stability is improved, the tab is prevented from being broken in the welding process, and the yield is improved; the threaded holes are formed in the pole columns, and the pole columns are easy to connect in groups. The safety turnover piece is added, when the air pressure in the battery is increased, the turnover piece is enabled to turn over, the tab connecting piece is fused, further gas generation of the battery is avoided, the potential safety hazard of explosion is caused, and the safety performance is improved.
Description
Technical field
The present invention relates to lithium ion battery production field more particularly to a kind of full lug cover boards and tool making aluminum-shell battery
There is the aluminum-shell battery of the cover board.
Background technology
The connection of the following problem of ternary aluminum-shell battery, full lug and connection sheet is hard link, is easy tod produce in welding process
Stress causes to be easy stress rupture at lug, and lug and connection sheet welding are also insecure, are easy to fall off；Battery group process
In, pole and positive and negative anodes busbar（Aluminium board/bronze medal）It mostly uses laser to be welded, this kind of connection type is complicated for operation, equipment
Expensive, of high cost, rear battery roll and replacement are inconvenient in groups；When ternary aluminum-shell battery air pressure inside is excessively high, battery is easy
It explodes.
Therefore, how to overcome that the lug of aluminum-shell battery is solid with connection sheet not prison welding, busbar connect difficulty, dismounting and change
Inconvenient and not safe enough defect is industry urgent problem to be solved.
Invention content
The present invention is in order to which the lug for solving existing aluminum-shell battery is solid with connection sheet not prison welding, busbar connect difficulty, tears open
It unloads and replaces inconvenient and not safe enough technical problem, propose that a kind of welding is firm, busbar connection is convenient and safe and reliable
Aluminum-shell battery full lug cover board and the aluminum-shell battery with the cover board.
A kind of battery cover board proposed by the present invention, including head cover, positive and negative pole, positive and negative electrode connection sheet, described is positive and negative
Pole connection sheet is made of flexible structure.
Preferably, the positive and negative electrode connection sheet is stacked by composite wafer forms the flexible structure.
Preferably, the positive strap can be stacked by the aluminium flake of multilayer 0.1mm forms the flexible knot
Structure.
Preferably, the negative straps can be stacked by the copper sheet of multilayer 0.1mm forms the flexible knot
Structure.
Preferably, the positive and negative pole can be equipped with threaded hole.
Preferably, a safety device is connected on the head cover.Under pressure, the safety device upwards jack up so that
It is electrically connected with the negative terminal.
Preferably, the safety device is the rotating sheet of butterfly, and periphery is connect with the head cover, the middle part of rotating sheet
Periphery for a boss, the boss is that shrapnel is connect with the periphery of the rotating sheet.Under pressure, which pushes up upwards
It rises, so that the boss is electrically connected with the negative terminal.
The invention also provides a kind of aluminum-shell batteries comprising the aluminium of the battery cover board and the battery cover board closure
Shell.
Preferably, the positive and negative electrode connection sheet on the battery cover board can be respectively equipped with sheath.
The positive and negative electrode connection sheet of connecting post and the full lug of battery core is arranged to the small yielding flexible knot of rigidity by the present invention
Structure efficiently solves the splintering problem occurred during tab welding, and it is firm that welding is stablized, and is less prone to obscission, carries
Yields has been risen, has reduced cost, while improving stability test；Threaded hole is opened on pole, it can be by conductive copper by bolt
Board/aluminium board is connect with single battery, is easily attached in groups.When one of cell malfunctions need to be removed and replaced for, it is not necessarily to
Integral demounting, easy to operate, assembly and disassembly are convenient, at low cost；Increase rotating sheet on the basis of retaining explosion-proof valve, in battery
When portion's air pressure increases, rotating sheet is promoted to overturn, inside battery conducting, lug connection sheet fusing avoids the further aerogenesis of battery,
To cause the security risk of explosion, security performance is improved.
Description of the drawings
Fig. 1 is the top view of battery cover board preferred embodiment of the present invention；
Fig. 2 be Fig. 1 in A-A to sectional view；
Fig. 3 be Fig. 1 in B-B to sectional view；
Fig. 4 be Fig. 1 in C-C to sectional view；
Fig. 5 is the portions D enlarged diagram in Fig. 2；
Fig. 6 is the cut-away illustration of aluminum-shell battery preferred embodiment of the present invention.
Wherein：1. head cover, 2. positive aluminium blocks, 3. positive terminals, 4. positive conductive blocks, 5. cathode aluminium blocks, 6. cathode aluminium block packets
Glue, 7. negative terminals, 8. sealing rings, 9. times plastic strips, 10. explosion-proof valves, 11. explosion-proof valves protection pad pasting, 12. positive straps, 13.
Negative straps, 14. positioning columns, 15. rotating sheets, 16. connection sheet sheaths, 17. aluminum hulls, 8. boss.
Specific implementation mode
With reference to embodiment and attached drawing, the present invention is further illustrated.
It is a kind of full lug battery cover board can be used as lithium ion battery provided by the invention, packet as shown in Fig. 1 ~ Fig. 5
It includes：Head cover 1, the cathode aluminium block 5 that negative terminal 7 on the left of head cover is penetrated by insulated enclosure circle 8, is placed on negative terminal epimere, if
Cathode aluminium block between 1 outer surface of cathode aluminium block 5 and head cover is encapsulated 6, is set to 7 hypomere annulus of 1 inner surface of head cover and negative terminal
Between lower plastic strip 9.It follows that negative terminal 7 is electrically connected with cathode aluminium block 5, and negative terminal 7, cathode aluminium block 5 and head cover
1 is dielectrically separated from.It further include the anode that the positive terminal 3 in 1 right side of head cover is penetrated by insulated enclosure circle 8, is placed on positive terminal epimere
Aluminium block 2, is set under 1 inner surface of head cover and positive terminal 3 the positive conductive block 4 between 1 outer surface of positive aluminium block 2 and head cover
The lower plastic strip 9 between Duan Yuanhuan.It follows that positive terminal 3, positive aluminium block 2 pass through positive conductive block 4 and head cover 1
It is electrically connected.The lower face of the positive terminal 3 and the rear surface of negative terminal 7 connect with positive strap 12, cathode respectively
The upper end of contact pin 13 connects, which is made of flexible structure.In the present embodiment, positive and negative electrode connection
Piece is stacked by composite wafer forms the flexible structure.For example, positive strap 12 can be folded by the aluminium flake of ten layers of 0.1mm
The flexible structure is formed together.Negative straps 13 can be stacked by the copper sheet of eight layers of 0.1mm formed it is described soft
Property structure.As needed, positive and negative electrode connection sheet can also use the flexible structure of other structures, as long as so that it is complete with battery core
It is easy compatible deformation when tab welding, welding stress is eliminated, so that firm welding stabilization.The present invention can also anode
Column 3 and 7 top vertical of negative terminal are to threaded hole is had, so that conductive bronze medal/aluminium board is threadedly coupled in groups with single battery.
Shown in Fig. 2, Fig. 5, a safety device is also associated on head cover 1, it, should under the effect of 1 inside pressure of head cover
Safety device jacks up upwards so that it is electrically connected with the negative terminal 7.In the present embodiment, safety device is turning over for a butterfly
Rotor 15, face-up, periphery is connect with the head cover 1, and the middle part of rotating sheet 15 is a boss 18, and the periphery of the boss is
Shrapnel is connect with the periphery of the rotating sheet.When the downside of rotating sheet 15 under the effect of the pressure, rotating sheet occur flexible deformation
It is flipped up, so that the boss 18 in the middle part of it passes through the cathode aluminium block 5 and negative terminal 7 of the through-hole and top of cathode aluminium block encapsulated 6
It is electrically connected.Since inside battery is an enclosure space, inside battery will produce gas there are various chemical reactions, cause
Internal pressure becomes larger, and rotating sheet deflects after pressure increase to a certain extent, and dish bottom is flipped up to be contacted with cathode aluminium block 5,
To which positive and negative electrode be connected, then electric current increased dramatically, and lug connection sheet fuses, and can avoid the further aerogenesis of inside battery
Lead to battery explosion.And original explosion-proof valve 10 can also be set to 1 middle part of head cover, explosion-proof valve is equipped with explosion-proof valve protective film 11.
The device can be used as the second insurance of battery.As shown in figure 3, being positioned for ease of installation, on the head cover 1 in 7 left side of negative terminal
It is additionally provided with a positioning column 14, cathode aluminium block 5 is buckled in cathode aluminium block encapsulated 6 on the positioning column 14.
As shown in fig. 6, a kind of aluminum-shell battery proposed by the present invention comprising：Aluminum hull 17, the present invention with the aluminum hull closure
The battery cover board of proposition.For ease of installing the positive strap 12 of battery cover board, negative straps 13 are respectively equipped with sheath 16.At
Product battery core can be set in aluminum hull 17, and positive strap 12, the lower part of negative straps 13 are positive respectively at the full lug of battery core
And full lug cathode welding（It is not shown in figure）.
The positive and negative electrode connection sheet of connecting post and the full lug of battery core is arranged to the small yielding flexible knot of rigidity by the present invention
Structure so that be easy compatible deformation when its tab welding complete with battery core, eliminate welding stress, efficiently solve tab welding process
The splintering problem of middle appearance, it is firm that welding is stablized, and is less prone to loose phenomenon, improves yields, reduces cost, carry simultaneously
High stability test；Threaded hole is opened on pole, conducting copper/aluminium row can be connect by bolt with single battery, is easy to connect
It is connected into group.When one of cell malfunctions need to be removed and replaced for, it is not necessarily to integral demounting, easy to operate, assembly and disassembly
It is convenient, it is at low cost；Increase rotating sheet on the basis of retaining explosion-proof valve promotes rotating sheet to overturn when inside battery air pressure increases,
Inside battery is connected, and the fusing of lug connection sheet avoids the further aerogenesis of battery, to cause the security risk of explosion, improves
Security performance.
Embodiment described above is primarily to illustrate the creating conception of the present invention, it is noted that for this field
Those of ordinary skill for, without departing from the inventive concept of the premise, various modifications and improvements can be made, these are all
It belongs to the scope of protection of the present invention.
Claims (9)
1. a kind of battery cover board, including head cover, positive and negative pole, positive and negative electrode connection sheet, which is characterized in that the positive and negative electrode
Connection sheet is made of flexible structure.
2. battery cover board as described in claim 1, which is characterized in that the positive and negative electrode connection sheet is stacked in by composite wafer
The flexible structure is formed together.
3. battery cover board as claimed in claim 2, which is characterized in that the positive strap by multilayer 0.1mm aluminium flake
It stacks to form the flexible structure.
4. battery cover board as claimed in claim 2, which is characterized in that the negative straps by multilayer 0.1mm copper sheet
It stacks to form the flexible structure.
5. battery cover board as described in claim 1, which is characterized in that the positive and negative pole is equipped with threaded hole.
6. battery cover board as described in claim 1, which is characterized in that a safety device is connected on the head cover, in pressure
Under effect, which jacks up upwards so that it is electrically connected with the negative terminal.
7. battery cover board as claimed in claim 6, which is characterized in that the safety device is the rotating sheet of a butterfly,
Periphery is connect with the head cover, and the middle part of the rotating sheet is a boss, and the periphery of the boss is the week of shrapnel and the rotating sheet
Side connects, and under pressure, which jacks up upwards, so that the boss is electrically connected with the negative terminal.
8. a kind of aluminum-shell battery, which is characterized in that include battery cover board and the battery cover board as described in claim 1 ~ 8
The aluminum hull of closure.
9. aluminum-shell battery as claimed in claim 8, which is characterized in that the positive and negative electrode connection sheet difference on the battery cover board
Equipped with sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810805797.0A CN108735962A (en) | 2018-07-20 | 2018-07-20 | Battery cover plate and aluminum-shell battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810805797.0A CN108735962A (en) | 2018-07-20 | 2018-07-20 | Battery cover plate and aluminum-shell battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108735962A true CN108735962A (en) | 2018-11-02 |
Family
ID=63927250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810805797.0A Withdrawn CN108735962A (en) | 2018-07-20 | 2018-07-20 | Battery cover plate and aluminum-shell battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108735962A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110492024A (en) * | 2019-08-27 | 2019-11-22 | 宁德阿李科技有限公司 | A kind of battery cap processing method |
| CN110649206A (en) * | 2019-09-29 | 2020-01-03 | 惠州亿纬锂能股份有限公司 | Explosion-proof valve component, top cover and battery |
| EP4033578A1 (en) * | 2021-01-25 | 2022-07-27 | Prime Planet Energy & Solutions, Inc. | Sealing plate including gas release vent and secondary battery using sealing plate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102456910A (en) * | 2010-10-16 | 2012-05-16 | 比亚迪股份有限公司 | Lithium ion power battery |
| CN206370449U (en) * | 2016-12-28 | 2017-08-01 | 靖江市东达铝业有限公司 | A kind of battery cap being flexible coupling with both positive and negative polarity |
| CN206947390U (en) * | 2017-07-24 | 2018-01-30 | 长沙锂安能电子科技有限公司 | Battery explosion-proof cover plate assembly with external safety protection device easy to replace |
| CN107994142A (en) * | 2016-10-27 | 2018-05-04 | 慈晟 | A kind of production method of the battery cover board with double protection functions |
-
2018
- 2018-07-20 CN CN201810805797.0A patent/CN108735962A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102456910A (en) * | 2010-10-16 | 2012-05-16 | 比亚迪股份有限公司 | Lithium ion power battery |
| CN107994142A (en) * | 2016-10-27 | 2018-05-04 | 慈晟 | A kind of production method of the battery cover board with double protection functions |
| CN206370449U (en) * | 2016-12-28 | 2017-08-01 | 靖江市东达铝业有限公司 | A kind of battery cap being flexible coupling with both positive and negative polarity |
| CN206947390U (en) * | 2017-07-24 | 2018-01-30 | 长沙锂安能电子科技有限公司 | Battery explosion-proof cover plate assembly with external safety protection device easy to replace |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110492024A (en) * | 2019-08-27 | 2019-11-22 | 宁德阿李科技有限公司 | A kind of battery cap processing method |
| CN110649206A (en) * | 2019-09-29 | 2020-01-03 | 惠州亿纬锂能股份有限公司 | Explosion-proof valve component, top cover and battery |
| EP4033578A1 (en) * | 2021-01-25 | 2022-07-27 | Prime Planet Energy & Solutions, Inc. | Sealing plate including gas release vent and secondary battery using sealing plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181102 |
|
| WW01 | Invention patent application withdrawn after publication |