CN201556658U - Lithium ion battery anode adapter structure - Google Patents
Lithium ion battery anode adapter structure Download PDFInfo
- Publication number
- CN201556658U CN201556658U CN2009200610558U CN200920061055U CN201556658U CN 201556658 U CN201556658 U CN 201556658U CN 2009200610558 U CN2009200610558 U CN 2009200610558U CN 200920061055 U CN200920061055 U CN 200920061055U CN 201556658 U CN201556658 U CN 201556658U
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- lithium ion
- positive pole
- pole ear
- welding
- lead
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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
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Abstract
The utility model discloses a lithium ion battery anode adapter structure, which comprises an anode tab and an adapter plate, wherein the adapter plate comprises a welding plate and a leading-out plate which are integrated and respectively cling to two sides of the anode tab during welding. Compared with the prior art, thicknesses of nickel films on two sides of the anode tab are guaranteed to be uniform and the nickel films can not be deflected mutually by aid of the integrated adapter plate of the lithium ion battery anode adopter structure, thereby eliminating possible problems of insufficient welding, over welding and deflection of leading-out end of the anode during electric resistance welding.
Description
Technical field
The utility model relates to a kind of lithium ion battery, especially a kind of anodal exchanging structure of lithium ion battery.
Background technology
Along with the development of battery process industry automation, increasing lithium ion battery adopts welding and auto reeling explained hereafter lithium-ion electric core automatically.
The material that the positive pole ear of lithium-ion electric core is derived end is Al; the material of the baffle pad of battery is Ni; the fusing point of Al (being about 660 ℃) is more much lower than the fusing point (being about 1455 ℃) of Ni, so that during with electric resistance welding welding protection plate, the Al sheet can't be directly and the Ni sheet welded together.Therefore, the positive pole ear of lithium-ion electric core welds together long Ni sheet/Al sheet/little Ni sheet with electric resistance welding usually in advance, becomes Ni thereby positive pole is derived the material of holding, so that the assembling of battery protecting plate.
But, in actual production, Ni/Al/Ni three's thickness often there are differences, so that when the structure that two Ni sheets are clamped the Al sheet is carried out resistance welded, can not form weldering nuclear effectively in the centre position, the slight current fluctuation of resistance welder promptly can cause the lack of fusion of two Ni sheets and Al sheet and cause rosin joint or cross weldering.
In addition, in order to guarantee efficient weld area, upper strata Ni sector-meeting design broad; Overlength in order to guarantee that weld all folds in the closedtop groove and not, upper strata Ni sheet then needs to design shortlyer, and these will cause the position of upper strata Ni sheet fixing, produce for the switching weldering and bring a lot of inconvenience.For example: upper strata Ni sheet deflection and levels Ni sheet and intermediate layer Al sheet dislocation etc., cause the welding contact-making surface not enough easily, and cause solder joint skew and problems such as rosin joint, mistake weldering.
In view of this, necessaryly provide a kind of lithium ion cell positive exchanging structure that can solve the problems of the technologies described above.
The utility model content
The purpose of this utility model is: provide a kind of and can avoid rosin joint, cross weldering and anodal lithium ion cell positive exchanging structure of deriving the end position offset problem.
In order to solve the problems of the technologies described above, the utility model provides a kind of lithium ion cell positive exchanging structure, and it comprises a positive pole ear and a switching piece, and switching piece comprises integrated bonding pad and lead-out tablet, during welding, bonding pad and lead-out tablet fit in the two sides of positive pole ear respectively.
As a kind of improvement of the utility model lithium ion cell positive exchanging structure, described bonding pad is acute angle with lead-out tablet and is connected before welding.
As a kind of improvement of the utility model lithium ion cell positive exchanging structure, the corner angle of described switching piece are fillet.
As a kind of improvement of the utility model lithium ion cell positive exchanging structure, the width of described switching piece greater than with the width of the positive pole ear of its welding.
As a kind of improvement of the utility model lithium ion cell positive exchanging structure, the length of described bonding pad is slightly less than the height of positive pole ear, and the length of described lead-out tablet is greater than the height of described positive pole ear.
As a kind of improvement of the utility model lithium ion cell positive exchanging structure, the welding intersection of described bonding pad, positive pole ear and lead-out tablet is turned back in the closedtop groove position of positive pole ear place lithium-ion electric core, and described lead-out tablet is positive pole ear and derives end.
With respect to prior art, the utility model lithium ion cell positive exchanging structure guarantees the Ni sheet consistency of thickness of positive pole ear both sides by integrated switching piece and can not be offset each other, thereby effectively eliminated the rosin joint that may occur in the electric resistance welding welding, the problem of crossing weldering and the skew of anodal derivation end position.
Description of drawings
Below in conjunction with the drawings and specific embodiments, the utility model and useful technique effect thereof are elaborated, wherein:
Fig. 1 is the electric core schematic diagram of lithium ion battery.
Fig. 2 is the front view of the switching piece of the utility model lithium ion cell positive exchanging structure.
Fig. 3 is the end view of the switching piece of the utility model lithium ion cell positive exchanging structure.
Fig. 4 and Fig. 6 are the installation process schematic diagram of the utility model lithium ion cell positive exchanging structure.
Fig. 5 is the enlarged diagram of analysing and observe of A-A line in Fig. 4.
Fig. 7 is the enlarged diagram of analysing and observe of B-B line in Fig. 6.
Embodiment
See also Fig. 1 to shown in Figure 3, the utility model lithium ion cell positive exchanging structure comprises a positive pole ear 20 and a switching piece 40, positive pole ear 20 is that the positive pole of lithium-ion electric core 10 is derived end, and lithium-ion electric core 10 also comprises a pole piece group 12 and a negative lug 14.
Switching piece 40 is the Ni sheet of a bending, and it comprises short long lead-out tablet 44 of bonding pad 42 and.The length of bonding pad 42 is slightly less than the height of positive pole ear 20, and the length of lead-out tablet 44 is greater than the height of positive pole ear 20, and the angle between bonding pad 42 and the lead-out tablet 44 is the acute angle that is not more than 45 degree.
In illustrated embodiment, the corner angle of switching piece 40 all are treated to fillet, cause leakage to prevent it from puncturing the surface of lithium-ion electric core 10 in process of production.In addition, the width of switching piece 40 is slightly larger than the width of positive pole ear 20, to guarantee that switching piece 40 has enough big area to weld with the positive pole ear 20 that may have tolerance.
See also Fig. 4 and shown in Figure 5, during installation, at first switching piece 40 is fixed in the anchor clamps (figure does not show), to guarantee the position consistency of positive pole ear 20 before position that positive pole ear after the welding derives end (being lead-out tablet 44) and the welding, then positive pole ear 20 is inserted in the bonding pad 42 and the gap between the lead-out tablet 44 of switching piece 40, and fit on the lead-out tablet 44.Subsequently, bonding pad 42 is bent to parallel with lead-out tablet 44 downwards, at this moment, bonding pad 42 and lead-out tablet 44 fit in the two sides of positive pole ear 20 respectively, thereby positive pole ear 20 is held in the switching piece 40, use electric resistance welding that Ni/Al/Ni is welded and get final product.
Because the Ni sheet (bonding pad 42 and lead-out tablet 44) of Al sheet (positive pole ear 20) both sides is all the part of switching piece 40, so consistency of thickness and can not being offset each other, therefore can effectively eliminates the rosin joint that may occur in the electric resistance welding welding and cross the weldering problem.
Please continue to consult Fig. 6 and shown in Figure 7, will weld the intersection closedtop groove position internal fixation that turns back at last and get final product.At this moment, the position of positive pole ear 20 is consistent before the position of lead-out tablet 44 and the welding, has prevented effectively that positive pole ear from deriving the end position skew and the electric core centre-to-centre spacing problem bigger than normal or less than normal that causes.
With respect to prior art, the positive pole ear that the utility model lithium ion cell positive exchanging structure not only can accurately be located after the processing is derived end position, and because the bonding pad 42 and the lead-out tablet 44 of switching piece 40 are integrated in advance, can guarantee to weld back solder joint and the anodal accuracy that derives end position, prevent because of the welding material variable thickness make peace rosin joint that the position of upper strata Ni sheet fixedly do not cause and the weldering problem.
The announcement of book and instruction according to the above description, the utility model person of ordinary skill in the field can also carry out suitable change and modification to above-mentioned execution mode.Therefore, the embodiment that discloses and describe above the utility model is not limited to also should fall in the protection range of claim of the present utility model modifications and changes more of the present utility model.In addition, although used some specific terms in this specification, these terms do not constitute any restriction to the utility model just for convenience of description.
Claims (6)
1. lithium ion cell positive exchanging structure, it comprises a positive pole ear and a switching piece, it is characterized in that: described switching piece comprises integrated bonding pad and lead-out tablet, during welding, described bonding pad and lead-out tablet fit in the two sides of positive pole ear respectively.
2. lithium ion cell positive exchanging structure according to claim 1 is characterized in that: described bonding pad is acute angle with lead-out tablet and is connected before welding.
3. lithium ion cell positive exchanging structure according to claim 1 and 2 is characterized in that: the corner angle of described switching piece are fillet.
4. lithium ion cell positive exchanging structure according to claim 1 and 2 is characterized in that: the width of described switching piece greater than with the width of the positive pole ear of its welding.
5. lithium ion cell positive exchanging structure according to claim 1 and 2 is characterized in that: the length of described bonding pad is slightly less than the height of positive pole ear, and the length of described lead-out tablet is greater than the height of described positive pole ear.
6. lithium ion cell positive exchanging structure according to claim 5, it is characterized in that: the welding intersection of described bonding pad, positive pole ear and lead-out tablet is turned back in the closedtop groove position of positive pole ear place electricity core, and described lead-out tablet is positive pole ear and derives end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200610558U CN201556658U (en) | 2009-07-23 | 2009-07-23 | Lithium ion battery anode adapter structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200610558U CN201556658U (en) | 2009-07-23 | 2009-07-23 | Lithium ion battery anode adapter structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201556658U true CN201556658U (en) | 2010-08-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200610558U Expired - Lifetime CN201556658U (en) | 2009-07-23 | 2009-07-23 | Lithium ion battery anode adapter structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201556658U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489857A (en) * | 2011-12-08 | 2012-06-13 | 天津力神电池股份有限公司 | Method for welding positive electrode aluminum electrode tab of lithium ion battery and nickel strap |
| CN105261726A (en) * | 2015-10-13 | 2016-01-20 | 浙江超威创元实业有限公司 | Positive tab connection structure of battery and welding method |
| CN110690401A (en) * | 2018-07-05 | 2020-01-14 | 东莞新能源科技有限公司 | Battery structure, battery and preparation method thereof |
| CN112792448A (en) * | 2021-01-13 | 2021-05-14 | 瑞浦能源有限公司 | Method for improving welding reliability of power battery tab |
-
2009
- 2009-07-23 CN CN2009200610558U patent/CN201556658U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489857A (en) * | 2011-12-08 | 2012-06-13 | 天津力神电池股份有限公司 | Method for welding positive electrode aluminum electrode tab of lithium ion battery and nickel strap |
| CN105261726A (en) * | 2015-10-13 | 2016-01-20 | 浙江超威创元实业有限公司 | Positive tab connection structure of battery and welding method |
| CN110690401A (en) * | 2018-07-05 | 2020-01-14 | 东莞新能源科技有限公司 | Battery structure, battery and preparation method thereof |
| CN110690401B (en) * | 2018-07-05 | 2022-07-05 | 东莞新能源科技有限公司 | Battery structure, battery and preparation method thereof |
| CN112792448A (en) * | 2021-01-13 | 2021-05-14 | 瑞浦能源有限公司 | Method for improving welding reliability of power battery tab |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100818 |