CN206541881U - A kind of lithium battery pole slice of anti-overheat - Google Patents
A kind of lithium battery pole slice of anti-overheat Download PDFInfo
- Publication number
- CN206541881U CN206541881U CN201720226733.6U CN201720226733U CN206541881U CN 206541881 U CN206541881 U CN 206541881U CN 201720226733 U CN201720226733 U CN 201720226733U CN 206541881 U CN206541881 U CN 206541881U
- Authority
- CN
- China
- Prior art keywords
- area
- lug
- lithium battery
- width
- battery pole
- 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.)
- Active
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
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model is related to technical field of lithium batteries, specifically related to a kind of lithium battery pole slice of anti-overheat, including metal foil, the metal foil is constituted by being welded with the lug area of lug, the clear area of two-sided uncoated electrode activity powder and being coated with the active region of electrode activity powder and be sequentially connected, the lug includes the weld part and the lead division beyond lug area being connected with lug area, the length of the weld part is equal with the width of metal foil, and the shape in the lug area matches with weld part.The utility model reduces the current density that lug is born, effectively reduction battery heat production by increasing the contact area of lug and metal foil; protect lithium battery pole slice; and reserved clear area, due to the obstruction without electrode active material, thermal diffusivity is preferable, so as to reach the purpose for preventing that lithium battery from overheating.
Description
Technical field
The utility model is related to technical field of lithium batteries, and in particular to a kind of lithium battery pole slice of anti-overheat.
Background technology
In general, the empty paper tinsel on pole piece is smaller, the energy density of battery is higher, but in high current charge-discharge,
The polarization of the pole piece near lug can be caused to become big, and the small battery-heating amount increase caused of empty paper tinsel can cause to damage to battery
Wound, or even the harmfulness consequence such as self-firing and self-explosion can be caused.
The patent of Application No. 201620989755.3 discloses one kind and buries lug formula pole piece, by reducing empty paper tinsel so that
The energy density of battery increases, the effective area increase of pole piece so that the thickness of battery is thinned, but not very
Prevent the superheating phenomenon of lithium battery well.
The content of the invention
The purpose of this utility model is that there is provided a kind of lithium battery pole of anti-overheat for above-mentioned deficiency of the prior art
Piece.
The purpose of this utility model is achieved through the following technical solutions：
A kind of lithium battery pole slice of anti-overheat, including metal foil, the metal foil is by being welded with the lug area, two-sided of lug
The clear area of uncoated electrode activity powder is sequentially connected composition, the lug with the active region for being coated with electrode activity powder
Including the weld part and the lead division beyond lug area being connected with lug area, the length of the weld part and the width phase of metal foil
Deng the shape in the lug area matches with weld part.
Wherein, the area ratio in the clear area and lug area is 5-6:1.
Wherein, the active region replaces connection by several one side coating areas and several dual coating areas and constituted successively,
The one side coating area only one side is coated with electrode activity powder, and the two-sided of dual coating area is coated with electrode activity
Powder, the side that the one side coating area is coated with electrode activity powder is outer ring side, is not coated with the one of electrode activity powder
Side is inner ring side.
Further, the area ratio of the one side coating area and clear area is 4-6:1.
Wherein, the lead division includes the depressed part being connected with weld part and the outer lead division being connected with depressed part, described
The width of depressed part is below the width of outer lead division, weld part.
Further, the weld part and outer lead division are rectangle, and the depressed part is narrow recessed in the wide centre in two ends
Width in the middle of face, the concave surface is the 1/10-1/8 of weld part width, the weld part of the width at two ends respectively with corresponding connection
It is equal with the width of outer lead division.
Further, the depressed part offers several through holes, and the aperture of the through hole is the 1%- of weld part width
5%。
The beneficial effects of the utility model：1st, by increasing the contact area of lug and metal foil, reduce what lug was born
Current density, effectively reduction battery heat production, protects lithium battery pole slice；2nd, reserved clear area is due to no electrode active material
Hinder, thermal diffusivity is preferable, so as to reach the purpose for preventing that lithium battery from overheating.
Brief description of the drawings
Utility model is described further using accompanying drawing, but the embodiment in accompanying drawing is not constituted to of the present utility model
What is limited, on the premise of not paying creative work, can also be according to the following drawings for one of ordinary skill in the art
Obtain other accompanying drawings.
Fig. 1 is front view of the present utility model；
Fig. 2 is dorsal view of the present utility model.
Reference includes：1- lugs area, 2- clear areas, 3- active regions, 31- one sides coating area, 32- dual coatings area,
4- lugs, 41- weld parts, 42- lead divisions, 421- depressed parts, 422- outer lead division, 423- through holes.
Embodiment
The utility model is further described with the following Examples.
See Fig. 1-2, a kind of lithium battery pole slice of anti-overheat, including metal foil, the metal foil is by being welded with the pole of lug 4
Ear field 1, the clear area 2 of two-sided uncoated electrode activity powder and it is coated with the active region 3 of electrode activity powder and is sequentially connected
Composition, the lug 4 includes the weld part 41 and the lead division 42 beyond lug area 1 being connected with lug area 1, the weld part 41
Length it is equal with the width of metal foil, shape and the weld part 41 in the lug area 1 match.
Wherein, the area ratio in the clear area 2 and lug area 1 is 5-6:1.By further optimizing clear area 2 and lug
The structure proportion in area 1, can effectively reduce the internal resistance of cell, it is possible to increase the comprehensive electricity such as electrokinetic cell high rate charge-discharge pond performance
Performance.
Wherein, the active region 3 is alternately connected successively by several one side coating areas 31 and several dual coating areas 32
Composition, the one side coating area 31 only has one side to be coated with electrode activity powder, and the two-sided of dual coating area 32 is coated with
There is electrode activity powder, the side that the one side coating area 31 is coated with electrode activity powder is outer ring side, is not coated with electrode
The side of active powder material is inner ring side.The incomplete electrode coated active powder material in the inner ring side of active region 3, active region 3 of being more convenient for
Core is turned around into, and one side coating area 31 contributes to radiating.
The area ratio of comprehensive battery high-performance and the demand of high radiating, the one side coating area 31 and clear area 2 is 4-6:
1。
Wherein, the lead division 42 includes the depressed part 421 being connected with weld part 41 and outer drawing of being connected with depressed part 421
Go out portion 422, the width of the depressed part 421 is below outer lead division 422, the width of weld part 41.Depressed part 421 can be played
The effect of similar fuse, fuses when lug 4 is overheated because short circuit etc. is unexpected, so that cell circuit is cut off, lithium electricity
The security performance in pond is improved.
Further, the weld part 41 and outer lead division 422 are rectangle, the depressed part 421 be two ends it is wide in
Between narrow concave surface, the width in the middle of the concave surface is the 1/10-1/8 of the width of weld part 41, and the width at two ends connects with corresponding respectively
The weld part 41 connect is equal with the width of outer lead division 422.
Further, the depressed part 421 offers several through holes 423, and the aperture of the through hole 423 is weld part
The 1%-5% of 41 width.
Finally it should be noted that above example is only illustrating the technical solution of the utility model, rather than to this reality
With the limitation of novel protected scope, although being explained with reference to preferred embodiment to the utility model, this area it is general
Lead to it will be appreciated by the skilled person that can be modified to the technical solution of the utility model or equivalent substitution, without departing from this
The spirit and scope of utility model technical scheme.
Claims (7)
1. a kind of lithium battery pole slice of anti-overheat, it is characterised in that：Including metal foil, the metal foil is by being welded with the pole of lug
Ear field, the clear area of two-sided uncoated electrode activity powder and it is coated with the active region of electrode activity powder and is sequentially connected group
Into the lug includes weld part and the lead division beyond lug area, the shape in the lug area and the weldering being connected with lug area
Socket part matches.
2. a kind of lithium battery pole slice of anti-overheat according to claim 1, it is characterised in that：The clear area and lug area
Area ratio be 5-6:1.
3. a kind of lithium battery pole slice of anti-overheat according to claim 1, it is characterised in that：The active region is by several
Alternately connection is constituted successively for one side coating area and several dual coating areas, and the one side coating area only one side is coated with electrode
Active powder material, the two-sided of the dual coating area is coated with electrode activity powder, and the one side coating area is coated with electrode active
Property powder side be outer ring side, be not coated with electrode activity powder side be inner ring side.
4. a kind of lithium battery pole slice of anti-overheat according to claim 3, it is characterised in that：The one side coating area and sky
The area ratio in white area is 4-6:1.
5. a kind of lithium battery pole slice of anti-overheat according to claim 1, it is characterised in that：The lead division includes and weldering
The depressed part of socket part connection and the outer lead division being connected with depressed part, the width of the depressed part are below outer lead division, welding
The width in portion.
6. a kind of lithium battery pole slice of anti-overheat according to claim 5, it is characterised in that：The weld part and outer extraction
Portion is rectangle, and the depressed part is that the width in the middle of the narrow concave surface in the wide centre in two ends, the concave surface is the 1/ of weld part width
10-1/8, the width at two ends is equal with the weld part of corresponding connection and the width of outer lead division respectively.
7. a kind of lithium battery pole slice of anti-overheat according to claim 5, it is characterised in that：If the depressed part is offered
Dry through hole, the aperture of the through hole is the 1%-5% of weld part width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720226733.6U CN206541881U (en) | 2017-03-09 | 2017-03-09 | A kind of lithium battery pole slice of anti-overheat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720226733.6U CN206541881U (en) | 2017-03-09 | 2017-03-09 | A kind of lithium battery pole slice of anti-overheat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206541881U true CN206541881U (en) | 2017-10-03 |
Family
ID=59941895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720226733.6U Active CN206541881U (en) | 2017-03-09 | 2017-03-09 | A kind of lithium battery pole slice of anti-overheat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206541881U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108115277A (en) * | 2018-01-31 | 2018-06-05 | 湖南振邦氢能科技有限公司 | A kind of metal double polar plates active region method for laser welding |
| CN109585908A (en) * | 2018-12-27 | 2019-04-05 | 深圳瑞隆新能源科技有限公司 | A kind of flexible packing lithium ion electric core and battery |
| CN112133877A (en) * | 2020-09-23 | 2020-12-25 | 重庆冠宇电池有限公司 | Pole piece, winding type battery and coating method of pole piece |
-
2017
- 2017-03-09 CN CN201720226733.6U patent/CN206541881U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108115277A (en) * | 2018-01-31 | 2018-06-05 | 湖南振邦氢能科技有限公司 | A kind of metal double polar plates active region method for laser welding |
| CN109585908A (en) * | 2018-12-27 | 2019-04-05 | 深圳瑞隆新能源科技有限公司 | A kind of flexible packing lithium ion electric core and battery |
| CN112133877A (en) * | 2020-09-23 | 2020-12-25 | 重庆冠宇电池有限公司 | Pole piece, winding type battery and coating method of pole piece |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206541881U (en) | A kind of lithium battery pole slice of anti-overheat | |
| CN204927440U (en) | Lamination formula secondary cell | |
| CN207651582U (en) | A kind of lithium battery pole slice of Double-pole lug | |
| CN204230364U (en) | A kind of multi pole ears winding type lithium ion battery roll core | |
| CN207781748U (en) | Wind battery core | |
| CN104103854B (en) | A kind of stacked column lithium ion battery and preparation method thereof | |
| CN207303263U (en) | A kind of fast charge polymer lithium ion battery electric core structure | |
| CN106159196A (en) | Bury lug formula pole piece and lithium ion battery | |
| CN205429100U (en) | Lithium ion cell | |
| CN205543028U (en) | Lithium ion battery group with overcurrent protection structure | |
| CN207282617U (en) | A kind of square lithium ion battery with aluminum shell of high-energy-density | |
| CN206878126U (en) | Secondary cell | |
| CN109599597A (en) | A kind of high current battery core and the power battery comprising the battery core | |
| CN204558577U (en) | Cathode of lithium battery ear safety protection structure | |
| CN209056566U (en) | A kind of electrodes of lithium-ion batteries of high security | |
| CN209418560U (en) | A kind of battery core coating insulating film structure and battery | |
| CN107293805A (en) | Takeup type battery core and volume pin | |
| CN109037761A (en) | A kind of rectangular lithium ion battery with aluminum shell and assembly method | |
| CN104051781A (en) | Lithium ion power battery and method for manufacturing battery | |
| CN209282294U (en) | A kind of lithium ion battery | |
| CN207896185U (en) | A kind of cathode of lithium battery ear safety protection structure | |
| CN204991890U (en) | Arc lithium ion battery | |
| CN206992165U (en) | A kind of loop laser welds standard cover plate of power battery | |
| CN109411701A (en) | Battery anode slice and its manufacturing method and lithium ion battery and its manufacturing method | |
| CN205621798U (en) | Lithium ion positive plate structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 523000 Kirin Ridge Road, Shahu, Tangxia Town, Dongguan, Guangdong Province, No. 49 Patentee after: Guangdong Yong Bang new energy Limited by Share Ltd Address before: 523000 Kirin Ridge Road, Shahu, Tangxia Town, Dongguan, Guangdong Province, No. 49 Patentee before: Dongguan Yong Bang Amperex Technology Limited |
|
| CP01 | Change in the name or title of a patent holder |