CN207398191U - A kind of power lithium-ion battery cover board positive end plate laser welding groove structure - Google Patents
A kind of power lithium-ion battery cover board positive end plate laser welding groove structure Download PDFInfo
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- CN207398191U CN207398191U CN201721351022.8U CN201721351022U CN207398191U CN 207398191 U CN207398191 U CN 207398191U CN 201721351022 U CN201721351022 U CN 201721351022U CN 207398191 U CN207398191 U CN 207398191U
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- end plate
- cover board
- positive terminal
- terminal end
- lid panel
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- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model discloses a kind of power lithium-ion battery cover board positive end plate laser welding groove structures, it includes cover board, lid panel notches and positive terminal end plate, cover board is welded on battery case, lid panel notches are square or circular, lid panel notches are set on the cover board, positive terminal end plate is step, the length and width or diameter of the lower part of positive terminal end plate are divided greatly to its upper, the lower part of positive terminal end plate is arranged in lid panel notches, and it is connected with cover board by laser seal welding, the lower part front junction of cover board and positive terminal end plate is equipped with a circle laser seal welding seam.The advantages of the utility model：Processing technology is simple, without plastic seal, reduce excessively connection, internal resistance is small, is suitble to high current charge-discharge；Cover board is equal with the current potential of anode, can also reduce internal resistance；Soldered is easily accurately positioned during welding, and the lower part of positive terminal end plate is arranged in groove, is not engraved structure, need not be leaked hunting after welding, is not in the situation of leakage, is had a safety feature.
Description
Technical field
The utility model is related to a kind of power lithium-ion battery cover board positive end plate laser welding groove structures, belong to lithium electricity
Pool technology field.
Background technology
Lithium battery is widely used in the accumulation power supplies system such as waterpower, firepower, wind-force and solar power station, and post and telecommunications are not
Uninterruptible power and electric tool, electric bicycle, battery-operated motor cycle, electric vehicle, military equipment, aerospace etc. are multiple
Field.Lithium ion battery is obtained in portable electronics such as laptop computer, video camera, mobile communication with its distinctive performance advantage
To commonly used.The high capacity lithium ion battery of exploitation incites somebody to action one of major impetus power supply as 21 century electric vehicle
It is applied in terms of artificial satellite, aerospace and energy storage.With the pressure of the environmental protection aspect in the in short supply and world of the energy, lithium
Electricity is widely used in electric car industry.
Current most common anode rod structure lead-out mode has：Cap punching adds plastic seal screw nut pair
Lock is drawn, and cap punching is drawn with the punching press of plastic seal pressure sheet rivet, and structure is cumbersome, the more assembling of parts is complicated,
Plastic seal is being easy to aging by pressure time length and followed the string long afterwards, the easy rotation not up to standard of pole torsion, battery core
Run into the severe situation of operating mode in use causes leakage by shaking screw and easily loosening, and battery performance declines and exists
Security risk, contact resistance is difficult to control, and positive terminal position temperature rises higher during charge and discharge, influences battery DC internal resistance, causes battery
Charge and discharge consistency performance is poor, and existing deriving structure is required to plastic seal and is sealed, and adds processing technology hardly possible
While spending, cost is also improved, and existing deriving structure is complicated, situation about excessively connecting often occurs, not only
Internal resistance is improved, causes battery charging and discharging poor, and adds cost.
Utility model content
The technical problems to be solved in the utility model, be to provide a kind of processing technology it is simple, without plastic seal, nothing
It need to leak hunting, reduce excessively connection, internal resistance is small, is suitble to the power lithium-ion battery cover board positive end plate Laser Welding of high current charge-discharge
Connect groove structure.
The utility model is realized by following proposal：A kind of power lithium-ion battery cover board positive end plate laser welding groove
Structure, including cover board, lid panel notches and positive terminal end plate, the cover board is welded on battery case, and the lid panel notches are side
Shape or circle, the lid panel notches are arranged on the cover board, the positive terminal end plate be step, the positive terminal end plate
Lower part length and width or diameter divide to its upper greatly, the lower part of the positive terminal end plate is arranged in the lid panel notches,
And be connected with the cover board by laser seal welding, the lower part front junction of the cover board and the positive terminal end plate is set
There is circle laser seal welding seam.
The cover board is equal with the current potential of anode.
The lower part of the positive terminal end plate is identical with the shape and structure of the lid panel notches, is square or circular.
The lower part of the positive terminal end plate is identical with the length and width or diameter of the lid panel notches.
The cover board is welded into sealing structure with the positive terminal end plate.
Plane where plane where the upper end of the positive terminal end plate lower part and the cover board upper end is at grade.
The depth of the lid panel notches is the half of the cover sheet thickness.
The beneficial effects of the utility model are：
1st, a kind of power lithium-ion battery cover board positive end plate laser welding groove structure of the utility model, is being covered with mold
Plate fovea superior Slot shaping and positive terminal end plate is molded with mold, positive terminal end plate and cover board are assembled, from cover board front by cover board
Laser welding is carried out with the lower part surrounding of positive terminal end plate, processing technology is simple, excessively connects without plastic seal, reduction
It connects, internal resistance is small, is suitble to high current charge-discharge；
2nd, a kind of cover board of power lithium-ion battery cover board positive end plate laser welding groove structure of the utility model and electricity
The current potential of pond anode is equal, can also reduce internal resistance；
3rd, a kind of structure of power lithium-ion battery cover board positive end plate laser welding groove structure of the utility model it is simple,
Reduce cost；
4th, a kind of cover board of power lithium-ion battery cover board positive end plate laser welding groove structure of the utility model with just
The lower part of pole end plate uses the closed welding of laser, and the length and width or diameter of positive terminal end plate lower part are more than upper part, Yi Zhun
Determine position soldered, and the lower part of positive terminal end plate is arranged in groove, is not engraved structure, laser seal welding seam only has
The half of cover sheet thickness need not leak hunting after welding, be not in the situation of leakage, and battery performance is stablized, had a safety feature.
5th, a kind of power lithium-ion battery cover board positive end plate laser welding groove structure of the utility model, can keep just
The thickness of pole end plate is constant, and during laser seal welding, laser will not penetrate positive terminal end plate, and when battery assembles, string
When connection sheet passes through laser welding when in parallel, positive terminal end plate will not be penetrated.
Description of the drawings
Fig. 1 is a kind of embodiment of power lithium-ion battery cover board positive end plate laser welding groove structure of the utility model
1 faces cross-sectional view.
Fig. 2 is a kind of embodiment of power lithium-ion battery cover board positive end plate laser welding groove structure of the utility model
1 overlooking the structure diagram.
Fig. 3 is a kind of embodiment of power lithium-ion battery cover board positive end plate laser welding groove structure of the utility model
2 face cross-sectional view.
Fig. 4 is a kind of embodiment of power lithium-ion battery cover board positive end plate laser welding groove structure of the utility model
2 overlooking the structure diagrams.
In figure：1 is cover board, and 2 be lid panel notches, and 3 be positive terminal end plate, and 4 stitch for laser seal welding.
Specific embodiment
It is further illustrated with reference to Fig. 1-4 pairs of the utility model, but scope of protection of the utility model is not limited in described
Hold.
Wherein identical parts are presented with like reference characters.It should be noted that word used in the following description
Language "front", "rear", "left", "right", "up" and "down" refer to the direction in attached drawing, and word " interior " and " outer " refer respectively to court
To or away from particular elements geometric centers direction, and attached drawing uses using very simplified form and non-accurate ratio
Rate, only to purpose that is convenient, lucidly aiding in illustrating the utility model embodiment.
For clarity, not describing whole features of practical embodiments, in the following description, well known function is not described in detail
And structure, because they can make the utility model chaotic due to unnecessary details, it will be understood that in any practical embodiments
Exploitation in, it is necessary to make a large amount of implementation details to realize the specific objective of developer, such as according to related system or related business
The limitation of industry changes into another embodiment by one embodiment, additionally, it should think this development may be it is complicated and
It is time-consuming, but it is only to those skilled in the art routine work.
Embodiment 1：A kind of power lithium-ion battery cover board positive end plate laser welding groove structure, including cover board 1, lid
Plate groove 2 and positive terminal end plate 3, cover board 1 are welded on battery case, and lid panel notches 2 are square, and lid panel notches 2 are arranged on cover board 1
On, positive terminal end plate 3 is step, and the length of the lower part of positive terminal end plate 3 is wider than its upper part point, under positive terminal end plate 3
Part is arranged in lid panel notches 2, and is connected with cover board 1 by laser seal welding, the lower part of cover board 1 and positive terminal end plate 3
Positive junction is divided to be equipped with a circle laser seal welding seam 4.
Cover board 1 is equal with the current potential of anode.
The lower part of positive terminal end plate 3 is identical with the shape and structure of lid panel notches 2, is square.
The lower part of positive terminal end plate 3 is identical with the length and width of lid panel notches 2.
Cover board 1 is welded into sealing structure with positive terminal end plate 3.
Plane where plane where the upper end of 3 lower part of positive terminal end plate and 1 upper end of cover board is at grade.
The depth of lid panel notches 2 is the half of 1 thickness of cover board.
The processing technology of the utility model is as follows：The first step：Lid panel notches are molded with mold；Second step：It will with mold
Positive terminal end plate is molded, the 3rd step：Cover board and the assembling of positive terminal end plate；4th step：From cover board front by cover board and positive end plate
Lower part surrounding carry out laser welding.
Embodiment 2：A kind of power lithium-ion battery cover board positive end plate laser welding groove structure, including cover board 1, lid
Plate groove 2 and positive terminal end plate 3, cover board 1 are welded on battery case, and lid panel notches 2 are circle, and lid panel notches 2 are arranged on cover board 1
On, positive terminal end plate 3 is step, and the diameter of the lower part of positive terminal end plate 3 divides greatly to its upper, under positive terminal end plate 3
Part is arranged in lid panel notches 2, and is connected with cover board 1 by laser seal welding, the lower part of cover board 1 and positive terminal end plate 3
Positive junction is divided to be equipped with a circle laser seal welding seam 4.
Cover board 1 is equal with the current potential of anode.
The lower part of positive terminal end plate 3 is identical with the shape and structure of lid panel notches 2, for circle.
The lower part of positive terminal end plate 3 is identical with the diameter of lid panel notches 2.
Cover board 1 is welded into sealing structure with positive terminal end plate 3.
Plane where plane where the upper end of 3 lower part of positive terminal end plate and 1 upper end of cover board is at grade.
The depth of lid panel notches 2 is the half of 1 thickness of cover board.
The processing technology of the utility model is as follows：The first step：Lid panel notches are molded with mold；Second step：It will with mold
Positive terminal end plate is molded, the 3rd step：Cover board and the assembling of positive terminal end plate；4th step：From cover board front by cover board and positive end plate
Lower part surrounding carry out laser welding.
Although more detailed elaboration is done to the technical solution of the utility model and has been enumerated, it should be understood that for
For those skilled in the art, modification is made to above-described embodiment or uses equivalent alternative solution, this skill to this field
Be for art personnel it is clear that on the basis of without departing from the utility model spirit these modifications or improvements, belong to
In the scope of the requires of the utility model protection.
Claims (7)
1. a kind of power lithium-ion battery cover board positive end plate laser welding groove structure, it is characterised in that：It includes cover board
（1）, lid panel notches（2）With positive terminal end plate（3）, the cover board（1）It is welded on battery case, the lid panel notches（2）For side
Shape or circle, the lid panel notches（2）It is arranged on the cover board（1）On, the positive terminal end plate（3）It is described for step
Positive terminal end plate（3）Lower part length and width or diameter divide to its upper greatly, the positive terminal end plate（3）Lower part be arranged on
The lid panel notches（2）It is interior, and with the cover board（1）It is connected by laser seal welding, the cover board（1）With the positive terminal
End plate（3）Lower part front junction be equipped with one circle laser seal welding seam（4）.
2. a kind of power lithium-ion battery cover board positive end plate laser welding groove structure according to claim 1, special
Sign is：The cover board（1）It is equal with the current potential of anode.
3. a kind of power lithium-ion battery cover board positive end plate laser welding groove structure according to claim 1, special
Sign is：The positive terminal end plate（3）Lower part and the lid panel notches（2）Shape and structure it is identical, for it is square or circle
Shape.
4. a kind of power lithium-ion battery cover board positive end plate laser welding groove structure according to claim 3, special
Sign is：The positive terminal end plate（3）Lower part and the lid panel notches（2）Length and width or diameter it is identical.
5. a kind of power lithium-ion battery cover board positive end plate laser welding groove structure according to claim 1, special
Sign is：The cover board（1）With the positive terminal end plate（3）It is welded into sealing structure.
6. a kind of power lithium-ion battery cover board positive end plate laser welding groove structure according to claim 1, special
Sign is：The positive terminal end plate（3）Plane where the upper end of lower part and the cover board（1）Plane where upper end is same flat
On face.
7. a kind of power lithium-ion battery cover board positive end plate laser welding groove structure according to claim 1, special
Sign is：The lid panel notches（2）Depth be the cover board（1）The half of thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721351022.8U CN207398191U (en) | 2017-10-19 | 2017-10-19 | A kind of power lithium-ion battery cover board positive end plate laser welding groove structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721351022.8U CN207398191U (en) | 2017-10-19 | 2017-10-19 | A kind of power lithium-ion battery cover board positive end plate laser welding groove structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207398191U true CN207398191U (en) | 2018-05-22 |
Family
ID=62328917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721351022.8U Active CN207398191U (en) | 2017-10-19 | 2017-10-19 | A kind of power lithium-ion battery cover board positive end plate laser welding groove structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207398191U (en) |
-
2017
- 2017-10-19 CN CN201721351022.8U patent/CN207398191U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Power lithium ion battery laps anodal end plate laser welding groove structure Effective date of registration: 20190318 Granted publication date: 20180522 Pledgee: Jiangxi State-owned Venture Capital Management Co.,Ltd. Pledgor: JIANGXI HD NEW ENERGY CO.,LTD. Registration number: 2019360000011 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20191203 Granted publication date: 20180522 |
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| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20221203 Granted publication date: 20180522 |
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| PD01 | Discharge of preservation of patent |