CN208819976U - A kind of battery cover board and aluminum-shell battery - Google Patents
A kind of battery cover board and aluminum-shell battery Download PDFInfo
- Publication number
- CN208819976U CN208819976U CN201821157067.6U CN201821157067U CN208819976U CN 208819976 U CN208819976 U CN 208819976U CN 201821157067 U CN201821157067 U CN 201821157067U CN 208819976 U CN208819976 U CN 208819976U
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- Prior art keywords
- battery
- positive
- cover board
- connection sheet
- sheet
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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 utility model discloses a kind of battery cover board and aluminum-shell battery, the battery cover board includes: top cover, positive and negative pole, positive and negative electrode connection sheet, and the positive and negative electrode connection sheet is made of the flexible structure that composite wafer stacks.Tab connection sheet is arranged to the small easily-deformable flexible structure of rigidity, reduces stress, improves welding stability, tab appearance rupture in welding process is avoided to improve yields；Threaded hole is opened on pole, is easily attached in groups.Increase insurance rotating sheet, when inside battery air pressure increases, rotating sheet is promoted to overturn, the fusing of tab connection sheet avoids battery and further produces gas, to cause the security risk of explosion, improves security performance.
Description
Technical field
The utility model relates to lithium ion battery production field more particularly to a kind of full tab cover boards for making aluminum-shell battery
And the aluminum-shell battery with the cover board.
Background technique
The following problem of ternary aluminum-shell battery, the connection of full tab and connection sheet are hard link, are easy to produce in welding process
Stress causes to be easy stress rupture at tab, and tab and connection sheet welding are also insecure, are easy to fall off；Battery group process
In, pole mostly uses laser to be welded with positive and negative anodes busbar (aluminium board/bronze medal), this kind of connection type is complicated for operation, equipment
Expensive, at 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 overcoming the tab of aluminum-shell battery with connection sheet, the welding is not firm, busbar connect difficult, dismounting and change
Inconvenient and not safe enough defect is industry urgent problem to be solved.
Utility model content
The welding is not firm in order to solve the tab of existing aluminum-shell battery and connection sheet for the utility model, busbar connect it is tired
Technical problem difficult, dismounting and change is inconvenient and not safe enough proposes that a kind of welding is firm, busbar connection is convenient and safe
The full tab cover board and the aluminum-shell battery with the cover board of reliable aluminum-shell battery.
The utility model proposes a kind of battery cover board, including top cover, positive and negative pole, positive and negative electrode connection sheet be described
Positive and negative electrode 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 top cover.Under pressure, the safety device jack up upwards so that
It is electrically connected with the negative terminal.
Preferably, the safety device is the rotating sheet of butterfly, and periphery is connected with the top cover, the middle part of rotating sheet
For a boss, the periphery of the boss is that elastic slice is connect with the periphery of the rotating sheet.Under pressure, which pushes up upwards
It rises, so that the boss and the negative terminal are electrically connected.
The utility model also proposed a kind of aluminum-shell battery comprising the battery cover board and the battery cover board closure
Aluminum hull.
Preferably, the positive and negative electrode connection sheet on the battery cover board can be respectively equipped with sheath.
It is small easily-deformable soft that the positive and negative electrode connection sheet of connecting post and the full tab of battery core is arranged to rigidity by the utility model
Property structure, efficiently solve the splintering problem occurred during tab welding, it is firm that welding is stablized, be less prone to fall off it is existing
As improving yields, reducing costs, while improving stability test；Threaded hole is opened on pole, can will be led by bolt
Electrolytic copper 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,
Easy to operate without integral demounting, assembly and disassembly are convenient, at low cost；Increase rotating sheet on the basis of retaining explosion-proof valve, electricity
When pond air pressure inside increases, rotating sheet is promoted to overturn, it is further to avoid battery for inside battery conducting, tab connection sheet fusing
It produces gas and improves security performance to cause the security risk of explosion.
Detailed description of the invention
Fig. 1 is the top view of the utility model battery cover board preferred embodiment；
Fig. 2 be Fig. 1 in A-A to cross-sectional view；
Fig. 3 be Fig. 1 in B-B to cross-sectional view；
Fig. 4 be Fig. 1 in C-C to cross-sectional view；
Fig. 5 is the portion D enlarged diagram in Fig. 2；
Fig. 6 is the cut-away illustration of the utility model aluminum-shell battery preferred embodiment.
Wherein: 1. top covers, 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. lower 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 embodiment
The utility model is further described below with reference to embodiment and attached drawing.
It is a kind of full tab battery cover board that can be used as lithium ion battery provided by the utility model as shown in Fig. 1 ~ Fig. 5,
Comprising: top cover 1, negative terminal 7 on the left of top cover is penetrated by insulated enclosure circle 8, is placed on negative terminal upper section cathode aluminium block
5, cathode aluminium block between 1 outer surface of cathode aluminium block 5 and top cover is encapsulated 6, is set to 7 lower section of 1 inner surface of top cover and negative terminal
Lower plastic strip 9 between annulus.It follows that negative terminal 7 and cathode aluminium block 5 are electrically connected, and negative terminal 7, cathode aluminium block 5 with
Top cover 1 is dielectrically separated from.It further include penetrating the positive terminal 3 in 1 right side of top cover by insulated enclosure circle 8, being placed on positive terminal upper section
Positive aluminium block 2, is set to 1 inner surface of top cover and positive terminal at the positive conductive block 4 between 1 outer surface of positive aluminium block 2 and top cover
The lower plastic strip 9 between 3 lower section annulus.It follows that positive terminal 3, positive aluminium block 2 pass through positive conductive block 4 and top
Lid 1 is electrically connected.The rear surface of the lower end surface of the positive terminal 3 and negative terminal 7 respectively with positive strap 12, cathode
The upper end of connection sheet 13 connects, which is made of flexible structure.In the present embodiment, the positive and negative electrode connects
Contact pin is stacked by composite wafer forms the flexible structure.For example, positive strap 12 can be by the aluminium flake of ten layers of 0.1mm
It stacks to form the flexible structure.Negative straps 13 can be stacked by the copper sheet of eight layers of 0.1mm formed it is described
Flexible structure.As needed, positive and negative electrode connection sheet can also use the flexible structure of other structures, as long as making itself and battery core
It is easy compatible deformation when full tab welding, welding stress is eliminated, so that firm welding stabilization.The utility model can also be
Positive terminal 3 and 7 top vertical of negative terminal to threaded hole is had, so that conductive bronze medal/aluminium board is threadedly coupled with single battery
In groups.
Incorporated by reference to shown in Fig. 2, Fig. 5, a safety device is also connected on top cover 1, it, should under the effect of 1 inside pressure of top 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 top cover 1, and the middle part of rotating sheet 15 is a boss 18, and the periphery of the boss is
Elastic slice 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 through-hole of cathode aluminium block encapsulated 6 and the cathode aluminium block 5 and negative terminal 7 of top
It is electrically connected.Since inside battery is an enclosure space, there are various chemical reactions for inside battery, can generate gas, cause
Internal pressure becomes larger, and rear rotating sheet deflects 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 tab connection sheet fuses, and can avoid inside battery and further produces gas
Lead to battery explosion.And original explosion-proof valve 10 can also be set to 1 middle part of top 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, to be easily installed and positioned, on the top cover 1 in 7 left side of negative terminal
It is additionally provided with a positioning column 14, cathode aluminium block 5 and cathode aluminium block encapsulated 6 are buckled on the positioning column 14.
As shown in fig. 6, the utility model proposes a kind of aluminum-shell battery comprising: aluminum hull 17, with the sheet of the aluminum hull closure
The battery cover board that utility model proposes.To be easily installed the positive strap 12 of battery cover board, negative straps 13 are respectively equipped with
Sheath 16.Finished product battery core can be set to aluminum hull 17 in, positive strap 12, negative straps 13 lower part respectively at the complete of battery core
Tab anode and full tab cathode weld (not shown).
It is small easily-deformable soft that the positive and negative electrode connection sheet of connecting post and the full tab of battery core is arranged to rigidity by the utility model
Property structure so that when its tab welding complete with battery core be easy compatible deformation, eliminate welding stress, efficiently solve tab welding
The splintering problem occurred in the process, it is firm that welding is stablized, and is less prone to loose phenomenon, improves yields, reduce costs, together
When improve stability test；Threaded hole is opened on pole, conducting copper/aluminium row can be connect with single battery by bolt, easily
In groups in connection.When one of cell malfunctions need to be removed and replaced for, be not necessarily to integral demounting, it is easy to operate, assembling and
Convenient disassembly, it is at low cost；Increase rotating sheet on the basis of retaining explosion-proof valve and promotes rotating sheet when inside battery air pressure increases
Overturning, inside battery conducting, the fusing of tab connection sheet avoid battery and further produce gas, thus cause the security risk of explosion,
Improve security performance.
Embodiment described above is primarily to illustrate the creating conception of the utility model, it is noted that for this
For the those of ordinary skill in field, without departing from the concept of the premise utility, several deformations can also be made and changed
Into these are all within the protection scope of the present invention.
Claims (6)
1. a kind of battery cover board, including top 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；The positive and negative electrode connection sheet is stacked by composite wafer forms the flexible structure,
Wherein, the positive strap is stacked by the aluminium flake of multilayer 0.1mm, the negative straps are by multilayer 0.1mm's
Copper sheet stacks.
2. battery cover board as described in claim 1, which is characterized in that the positive and negative pole is equipped with threaded hole.
3. battery cover board as described in claim 1, which is characterized in that a safety device is connected on the top cover, in pressure
Under effect, which jacks up upwards so that it is electrically connected with the negative terminal.
4. battery cover board as claimed in claim 3, which is characterized in that the safety device is the rotating sheet of a butterfly,
Periphery is connected with the top cover, and the middle part of the rotating sheet is a boss, and the periphery of the boss is the week of elastic slice and the rotating sheet
Side connection, under pressure, which jacks up upwards, so that the boss and the negative terminal are electrically connected.
5. a kind of aluminum-shell battery, which is characterized in that including the described in any item battery cover boards of such as claim 1 ~ 4 and the electricity
The aluminum hull of pond cover board closure.
6. aluminum-shell battery as claimed in claim 5, 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 |
|---|---|---|---|
| CN201821157067.6U CN208819976U (en) | 2018-07-20 | 2018-07-20 | A kind of battery cover board and aluminum-shell battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821157067.6U CN208819976U (en) | 2018-07-20 | 2018-07-20 | A kind of battery cover board and aluminum-shell battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208819976U true CN208819976U (en) | 2019-05-03 |
Family
ID=66271226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821157067.6U Active CN208819976U (en) | 2018-07-20 | 2018-07-20 | A kind of battery cover board and aluminum-shell battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208819976U (en) |
-
2018
- 2018-07-20 CN CN201821157067.6U patent/CN208819976U/en active Active
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