CN207925569U - A kind of lithium-ion electric core pole piece structure - Google Patents
A kind of lithium-ion electric core pole piece structure Download PDFInfo
- Publication number
- CN207925569U CN207925569U CN201721745477.8U CN201721745477U CN207925569U CN 207925569 U CN207925569 U CN 207925569U CN 201721745477 U CN201721745477 U CN 201721745477U CN 207925569 U CN207925569 U CN 207925569U
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- Prior art keywords
- pole piece
- lug
- layer
- lithium
- electric core
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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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The utility model is related to technical field of lithium ion, and in particular to a kind of lithium-ion electric core pole piece structure, including anode pole piece, cathode pole piece, lug and the insulation diaphragm being arranged between anode pole piece and cathode pole piece, the lug includes double-layer structure：The layers of copper on upper layer and the nickel layer of lower layer, double-layer structure are welded to each other together, and when in use, the nickel layer of lower layer is connect by welding with pole piece the lug.Lithium-ion electric core pole piece structure described in the utility model by using layers of copper and nickel layer composite construction lug, both it can reduce internal resistance, lug can be made to be more prone to carry out soldering again, and can also effectively avoid because short circuit, squeeze, impact or overcharge caused by battery catches fire and explosion, to improve the safety of battery.
Description
Technical field
The utility model is related to technical field of lithium ion, and in particular to a kind of lithium-ion electric core pole piece structure.
Background technology
Lithium ion battery in the prior art is stacked by anode pole piece and cathode pole piece mostly, anode pole piece and cathode pole piece
Between be provided with insulation diaphragm or insulation rubberised layer, be coated with active material layer on anode pole piece and cathode pole piece, anode pole piece and
Lug is welded on cathode pole piece.Since the cost of corronil is than homogenous material costliness, lithium-ion electric core in the prior art
Lug on pole piece mostly uses greatly copper or the single material of nickel is made, however this lug has the disadvantages that when in use：It is single
Its internal resistance of one nickel lug is higher, and single copper lug is difficult to carry out soldering, increases and is welded between lug and pole piece
Connect the difficulty of operation.
Utility model content
To solve the above problems, the utility model provides a kind of lithium-ion electric core pole piece structure.
To achieve the above object, the utility model adopts the following technical solution：
A kind of lithium-ion electric core pole piece structure, including anode pole piece, cathode pole piece, lug and setting in anode pole piece and are born
Insulation diaphragm between the pole piece of pole, the lug include double-layer structure：The layers of copper on upper layer and the nickel layer of lower layer, double-layer structure mutually weld
It is connected together, layers of copper and nickel layer composite construction can both reduce internal resistance, and carry out soldering can be facilitated by having；The lug exists
In use, the nickel layer of lower layer is connect by welding with pole piece, the nickel layer of lower layer is easy to process, it may be convenient to be welded on pole piece
On, reduce the difficulty of processing.
Preferably, the lug is gradually reduced formula distribution from electrode foil area to dressing area one end in spacing, ensure
With the increase of core, lug is linearly distributed in core end, reduces heat of the battery when being large current discharge pond inside core
Amount mitigates analysis lithium problem of the multi pole ears battery in cyclic process significantly.
Preferably, the thickness on the lug top is more than the thickness for the lower part being connect with pole piece, when a short circuit occurs, pole
The Joule heat of ear lower part is big, can first fuse, to make circuit disconnect, prevent battery because of caused by sustained short-circuit it is on fire with
Explosion, to improve safety.
Preferably, the thickness on the lug top is 2.5 times of the lower part thickness being connect with pole piece.
Preferably, only setting polarized applies in the one side far from insulation diaphragm for the anode pole piece and cathode pole piece
Layer occurs to squeeze, impact or overcharge when causing membrane ruptures, and positive and negative anodes contact can discharge, it is on fire caused by avoiding and
Explosion, to improve safety.
Preferably, the weight ratio of the upper and lower is 5:3.
Advantageous effect
Lithium-ion electric core pole piece structure described in the utility model by using layers of copper and nickel layer composite construction lug, both
Internal resistance can be reduced, and lug can be made to be more prone to carry out soldering, and can also effectively avoid because of short circuit, squeeze, punching
Battery catches fire and explosion caused by hitting or overcharging, to improve the safety of battery.
Description of the drawings
Fig. 1 is the lithium-ion electric core pole piece structure schematic diagram described in the utility model embodiment 1.
Fig. 2 is the extreme ear structure schematic diagram described in the utility model embodiment 1.
Fig. 3 is the structural schematic diagram of the lug described in the utility model embodiment 2.
Fig. 4 is the lithium-ion electric core pole piece structure schematic diagram described in the utility model embodiment 3.
Fig. 5 is the lithium-ion electric core pole piece structure schematic diagram described in the utility model embodiment 3.
In figure：1:Anode pole piece 2:Cathode pole piece 3：Lug 4：Insulation diaphragm 5：Pole piece 6：Polarity coating 7：Electrode
Foil area 8：Dressing area.
Specific implementation mode
The technical solution of the utility model is further elaborated with reference to embodiment, and in conjunction with attached drawing.
Embodiment 1
As shown in Figure 1 and Figure 2, a kind of lithium-ion electric core pole piece structure, including anode pole piece 1, cathode pole piece 2,3 and of lug
The insulation diaphragm 4 being arranged between anode pole piece and cathode pole piece, the lug 3 include double-layer structure：The layers of copper on upper layer and lower layer
Nickel layer, double-layer structure is welded to each other together, and when in use, the nickel layer of lower layer is connect by welding with pole piece the lug.
Preferably, the weight ratio of the upper and lower is 5:3.
Embodiment 2
As shown in figure 3, a kind of lithium-ion electric core pole piece structure, including anode pole piece 1, cathode pole piece 2, lug 3 and setting
Insulation diaphragm 4 between anode pole piece and cathode pole piece, the lug 3 include double-layer structure：The layers of copper on upper layer and the nickel of lower layer
Layer, double-layer structure are welded to each other together, and when in use, the nickel layer of lower layer is connect by welding with pole piece the lug.
Preferably, the thickness on 3 top of the lug is more than the thickness for the lower part being connect with pole piece.
Preferably, the thickness on 3 top of the lug is 2.5 times of the lower part thickness being connect with pole piece.
Preferably, the weight ratio of the upper and lower is 5:3.
Embodiment 3
As shown in figure 4, a kind of lithium-ion electric core pole piece structure, including anode pole piece 1, cathode pole piece 2, lug 3 and setting
Insulation diaphragm 4 between anode pole piece and cathode pole piece, the lug 3 include double-layer structure：The layers of copper on upper layer and the nickel of lower layer
Layer, double-layer structure are welded to each other together, and when in use, the nickel layer of lower layer is connect by welding with pole piece the lug.
Preferably, as shown in figure 5, the lug 3 is gradually reduced formula from electrode foil area to dressing area one end in spacing
Distribution.
Preferably, the thickness on 3 top of the lug is more than the thickness for the lower part being connect with pole piece.
Preferably, the thickness on 3 top of the lug is 2.5 times of the lower part thickness being connect with pole piece.
Preferably, only setting polarized applies in the one side far from insulation diaphragm for the anode pole piece and cathode pole piece
Layer.
Preferably, the weight ratio of the upper and lower is 5:3.
Claims (1)
1. a kind of lithium-ion electric core pole piece structure, including anode pole piece, cathode pole piece, lug and setting are in anode pole piece and cathode
Insulation diaphragm between pole piece, it is characterised in that：The lug includes double-layer structure：The layers of copper on upper layer and the nickel layer of lower layer, two layers
Structure is welded to each other together, and when in use, the nickel layer of lower layer is connect by welding with pole piece the lug；The lug is from electricity
Pole foil area to dressing area one end is gradually reduced formula distribution in spacing；The thickness on the lug top is more than to be connect down with pole piece
The thickness in portion；The thickness on the lug top is 2.5 times of the lower part thickness being connect with pole piece；The anode pole piece and cathode pole
Polarized coating is only arranged in piece in the one side far from insulation diaphragm；The weight ratio of the upper and lower is 5:3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721745477.8U CN207925569U (en) | 2017-12-14 | 2017-12-14 | A kind of lithium-ion electric core pole piece structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721745477.8U CN207925569U (en) | 2017-12-14 | 2017-12-14 | A kind of lithium-ion electric core pole piece structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207925569U true CN207925569U (en) | 2018-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721745477.8U Active CN207925569U (en) | 2017-12-14 | 2017-12-14 | A kind of lithium-ion electric core pole piece structure |
Country Status (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113937428A (en) * | 2021-09-30 | 2022-01-14 | 广东微电新能源有限公司 | Battery, battery preparation method, battery detection method and electronic equipment |
-
2017
- 2017-12-14 CN CN201721745477.8U patent/CN207925569U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113937428A (en) * | 2021-09-30 | 2022-01-14 | 广东微电新能源有限公司 | Battery, battery preparation method, battery detection method and electronic equipment |
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