CN106450157A - Pole piece component, electric core and battery - Google Patents
Pole piece component, electric core and battery Download PDFInfo
- Publication number
- CN106450157A CN106450157A CN201611000680.2A CN201611000680A CN106450157A CN 106450157 A CN106450157 A CN 106450157A CN 201611000680 A CN201611000680 A CN 201611000680A CN 106450157 A CN106450157 A CN 106450157A
- Authority
- CN
- China
- Prior art keywords
- pole piece
- battery core
- adhesive layer
- conductive adhesive
- foil
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a pole piece component, an electric core and a battery. The pole piece component comprises a pole piece, a tab and an electroconductive rubber layer, wherein the tab is connected to the pole piece, and the electroconductive rubber layer is adhered on the pole piece and the tab and is connected with the pole piece and the tab in an electroconductive manner. The pole piece component has the advantages that since the electroconductive rubber layer is arranged on the pole piece and is connected with the pole piece and the tab, the connecting area between the pole piece and the tab is enlarged, and electroconductivity and rate capability of the electric core can be improved.
Description
Technical field
The present invention relates to cell art, more particularly to a kind of pole piece component, battery core and battery.
Background technology
Lithium ion battery is widely used to the various fields such as electric tool, electric automobile, electrical network energy storage, and market is to battery
Quick charge and big multiplying power discharging require more and more higher.
At present in lithium ion battery manufacturing process, with solder joint or bar weldering print is become to be connected between lug and pole piece, between the two
Connection is not firm, easily disconnects, and affects the electric conductivity of battery core, is unfavorable for the raising of battery high rate performance.
Content of the invention
The technical problem to be solved in the present invention is, provide a kind of pole piece component for improving electric conductivity and high rate performance,
Battery core and battery using the pole piece component.
The technical solution adopted for the present invention to solve the technical problems is：A kind of pole piece component is provided, including pole piece, connection
Lug and conductive adhesive layer on the pole piece；The conductive adhesive layer is covered on the lug and pole piece, and is conductively connected
The lug and pole piece.
Preferably, the pole piece includes foil, the slurry coating being coated in the foil opposite sides；On the pole piece
The locating slot for exposing the foil is provided with, the lug is arranged in the locating slot and is connected on the foil；Described
Conductive adhesive layer covers the locating slot.
Preferably, the edge of the conductive adhesive layer is extended on the slurry coating.
Preferably, the conductive adhesive layer extends in the border width≤2mm on the slurry coating.
Preferably, the conductive adhesive layer is made up of conducting polymer；Or, the conductive adhesive layer is mixed by non-conductive matrix
Close conducting particles or conducting polymer is made.
Preferably, the conducting polymer is polypyrrole, polyaniline or polyacetylene；
The non-conductive matrix is epoxy resin or silicone；The conducting particles includes in metal dust and graphite one
Plant or multiple.
The present invention also provides a kind of battery core, including being wound into the laminated construction of column；The laminated construction includes positive pole
Piece, negative plate, the barrier film being stacked between the positive plate and negative plate；The positive plate and/or negative plate are any of the above-described
Pole piece component described in.
Preferably, the lug on the positive plate and negative plate stretches out two ends of the battery core respectively.
Preferably, the battery core outmost turns expose the foil of the negative plate；The exposed foil is coated with conduction
Glue.
The present invention also provides a kind of battery, including the battery core described in any of the above item, shell；The battery core is arranged on described
Inside the shell is simultaneously connected with the housings conductive.
Beneficial effects of the present invention：By conductive adhesive layer, connection pole piece and lug is arranged on pole piece, increase lug and pole
Connection area between piece, can improve the electric conductivity of battery core, improve the high rate performance of battery core.
In addition, by battery core (core) outmost turns with the foil ending of pole piece coated with conductive glue, can be used as the another of pole piece
One lug is completely attached to housing, improves the being conductively connected property of battery core and shell, reduces the internal resistance of cell, improves the forthright again of battery core
Energy.
Description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the structural representation of the pole piece component of one embodiment of the invention；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the structural representation of the battery core of one embodiment of the invention；
Fig. 4 is the internal resistance comparison diagram that the battery core that in the present invention, pole piece component is made is measured with traditional battery core；
Fig. 5 is that heavy-current discharge capacity is protected at a set temperature with traditional battery core for battery core that in the present invention, pole piece component is made
Holdup comparison diagram.
Specific embodiment
In order to be more clearly understood to the technical characteristic of the present invention, purpose and effect, now control accompanying drawing detailed description
The specific embodiment of the present invention.
As shown in Figure 1, 2, the pole piece component of one embodiment of the invention, for battery core, which includes pole piece 10, is connected to pole piece
Lug 20 and conductive adhesive layer 30 on 10.Conductive adhesive layer 30 is covered on lug 20 and pole piece 10, and is conductively connected lug 20
With pole piece 10.
Wherein, pole piece 10 includes foil 11, the slurry coating 12 being coated in 11 opposite sides of foil.Foil 11 can select
Copper Foil.Slurry coating 12 can be formed by anode sizing agent, be positive plate so as to pole piece 10；Or, slurry coating 12 is by cathode size
Formed, be negative plate so as to pole piece 10.
Pole piece 10 is provided with the locating slot 13 for exposing foil 11；Locating slot 13 is through to foil 11 from slurry coating 12
Top, as empty paper tinsel region, facilitates lug 20 to be disposed therein and be welded on foil 11.Lug 20 is arranged in locating slot 13
And be connected on foil 11 by welding manner.
Conductive adhesive layer 30 is covered on 30 surface of lug and extends to 13 bottom surface of locating slot (11 surface of foil) so that foil
11 are electrically connected with lug 30 by conductive adhesive layer 30, are reduced in battery core, and resistance improves the electric conductivity of battery core, to improve multiplying power.
Preferably, conductive adhesive layer 30 extends to whole locating slot 13, so as to cover locating slot 13.
Alternatively, conductive adhesive layer 30 extends to its side wall to connect with slurry coating 12 in locating slot 13；Or, lead
30 edge of electric glue-line is extended on slurry coating 12, strengthens bonding strength of the conductive adhesive layer 30 on foil 11.
In the present embodiment, as shown in Fig. 2 the edge of conductive adhesive layer 30 is extended on slurry coating 12.Also, for not shadow
The capacitance of battery core is rung, conductive adhesive layer 30 extends in the border width≤2mm on slurry coating 12.
Additionally, the edge of conductive adhesive layer 30 also can be extended out locating slot 13 and be covered in the side of foil 11.In the same manner, conductive
Glue-line 30 extends the border width≤2mm of locating slot 13.
Specifically, and as shown in Figure 1, 2, for convenience of the welding of lug 20, the opposite sides of pole piece 10 exposes paper tinsel respectively
The part of material 11, therefore, locating slot 13 may include the first locating slot 131 and the second locating slot being located on 10 both sides of pole piece respectively
132.First locating slot 131 and the second locating slot 132 are relative, and respectively from insertion the slurry coating 12 of 11 both sides of foil to paper tinsel
11 surface of material.Lug 30 is arranged in the first locating slot 131, and from 11 both sides of foil, lug 20 is positioned and welded welding equipment by operation
It is connected on foil 11.
By being free paper tinsel region overlay on pole piece 10, conductive adhesive layer 20 may include to cover the first of the first locating slot 131
Conductive adhesive layer 31 and the second conductive adhesive layer 32 of the second locating slot 132 of covering.
Further, conductive adhesive layer 30 can be structural conductive glue, refer to itself have electric conductivity or doped after have
The conducting polymer of electric conductivity is made；Conducting polymer be also referred to as intrinsically conducting macromolecular material, be by have conjugation ∏ key
Or partly conjugated macromolecule is through chemistry or electrochemistry " doping " so as to be changed into a family macromolecule material of conductor by insulator
Material.Alternatively, conducting polymer can be polypyrrole (PPy), polyaniline (PAn) or polyacetylene (PA) etc..
Conductive adhesive layer 30 can be filled conductive glue, by non-conductive matrix hybrid conductive particle or conducting polymer system
Become.Non-conductive matrix mainly has following a few classes：Epoxiess, such as epoxy resin；Silicone or non-conductive polymer.Mixed leads
Charged particle can be one or more in the metal dusts such as Au, Ag, Cu, Al, Zn, Fe, Ni and graphite etc..
As shown in figure 3, the battery core of one embodiment of the invention, including being wound into the laminated construction of column 40.Laminated construction
Including positive plate, negative plate, the barrier film being stacked between positive plate and negative plate.Lug on positive plate and negative plate is stretched respectively
Go out two ends of battery core.
Wherein, positive plate and/or negative plate are above-mentioned pole piece component.
Generally, in battery core, outmost turns part is negative plate.Further, it is to improve being electrically connected for negative plate and battery case
Connect, can conducting resinl 50 be set in battery core outmost turns, can be used as another lug of negative pole and cage connection.
In the present embodiment, battery core outmost turns expose the foil of negative plate；Conducting resinl 50 is coated on exposed foil, with
Foil is electrically connected.
Negative plate edge side can be enveloped in battery core outmost turns by conducting resinl 50, play fixation, it is ensured that battery core (volume
Core) not loose.Additionally, conducting resinl 50 also has conductive sexual function, exposed foil can be made to contact with shell completely.
Conducting resinl 50 can be made identical material with above-mentioned conductive adhesive layer 30.
The battery of one embodiment of the invention, including shell and above-mentioned battery core；Battery core is arranged on inside the shell and shell
It is conductively connected.Wherein, by the setting of conducting resinl on battery core outer ring, which can contact electrical connection in inside the shell with shell wall, knot
The setting of conductive adhesive layer on positive plate and/or negative plate is closed, the electric conductivity of battery core is improved, reduce battery core internal resistance, improve battery core
High rate performance.
The battery core that the pole piece component of the present invention is made is interior with what traditional battery core (being not provided with conductive adhesive layer on pole piece) was measured
Resistance, at a set temperature heavy-current discharge capability retention are compared, respectively as shown in Figure 4,5.
In Fig. 4, the data point of top is the internal resistance of traditional battery core, and the data point of lower section is the internal resistance of battery core of the present invention.From
In figure understands, the internal resistance of battery core of the present invention is less than the internal resistance of traditional battery core, both internal resistance difference 10m Ω -15m Ω.
In Fig. 5, in each group of cylinder, the left side is the discharge capacitance of traditional battery core, and the right is put for battery core of the present invention
Capacitance conservation rate.It can be seen that battery core of the present invention at a set temperature heavy-current discharge capability retention higher than tradition electricity
The heavy-current discharge capability retention of core, heavy-current discharge capability retention difference 35%；34 DEG C of temperature difference.
Embodiments of the invention are the foregoing is only, the scope of the claims of the present invention is not thereby limited, every using this
Equivalent structure or equivalent flow conversion that bright description and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of pole piece component, it is characterised in that including pole piece, the lug being connected on the pole piece and conductive adhesive layer；Institute
State conductive adhesive layer to be covered on the lug and pole piece, and be conductively connected the lug and pole piece.
2. pole piece component according to claim 1, it is characterised in that the pole piece includes foil, is coated in the foil
Slurry coating in opposite sides；The pole piece is provided with the locating slot for exposing the foil, and the lug is arranged on described
Locating slot is interior and is connected on the foil；The conductive adhesive layer covers the locating slot.
3. pole piece component according to claim 2, it is characterised in that the edge of the conductive adhesive layer extends to the slurry
In coating.
4. pole piece component according to claim 3, it is characterised in that the conductive adhesive layer is extended on the slurry coating
Border width≤2mm.
5. pole piece component according to claim 1, it is characterised in that the conductive adhesive layer is made up of conducting polymer；Or
Person, the conductive adhesive layer is made up of non-conductive matrix hybrid conductive particle or conducting polymer.
6. pole piece component according to claim 5, it is characterised in that the conducting polymer is polypyrrole, polyaniline or
Polyacetylene；
The non-conductive matrix is epoxy resin or silicone；The conducting particles include the one kind in metal dust and graphite or
Multiple.
7. a kind of battery core, it is characterised in that including being wound into the laminated construction of column；The laminated construction include positive plate,
Negative plate, the barrier film being stacked between the positive plate and negative plate；The positive plate and/or negative plate are claim 1-6
Pole piece component described in any one.
8. battery core according to claim 7, it is characterised in that the lug on the positive plate and negative plate stretches out institute respectively
State two ends of battery core.
9. battery core according to claim 7, it is characterised in that the battery core outmost turns expose the paper tinsel of the negative plate
Material；The exposed foil is coated with conducting resinl.
10. a kind of battery, it is characterised in that including the battery core described in any one of claim 7-9, shell；The battery core is arranged
It is connected in the inside the shell and with the housings conductive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611000680.2A CN106450157A (en) | 2016-11-14 | 2016-11-14 | Pole piece component, electric core and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611000680.2A CN106450157A (en) | 2016-11-14 | 2016-11-14 | Pole piece component, electric core and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106450157A true CN106450157A (en) | 2017-02-22 |
Family
ID=58207891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611000680.2A Pending CN106450157A (en) | 2016-11-14 | 2016-11-14 | Pole piece component, electric core and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106450157A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110828775A (en) * | 2019-10-15 | 2020-02-21 | 江苏卓高新材料科技有限公司 | Current collector electrode structure, secondary battery and preparation method of secondary battery |
| CN113728509A (en) * | 2021-03-31 | 2021-11-30 | 宁德新能源科技有限公司 | Electrochemical device and electronic device |
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| CN102306777A (en) * | 2011-08-30 | 2012-01-04 | 广州市云通磁电有限公司 | Positive electrode sheet of lithium iron phosphate type lithium ion battery, and preparation method thereof |
| CN202221792U (en) * | 2011-05-18 | 2012-05-16 | 海洋王照明科技股份有限公司 | Electrode of power battery |
| CN104577041A (en) * | 2015-01-08 | 2015-04-29 | 田东 | Method for preparing lithium ion battery negative plate by using carbon fiber cloth as matrix |
| CN104577053A (en) * | 2015-01-08 | 2015-04-29 | 田东 | Preparation method of silicon-carbon composite lithium ion battery negative plate |
| CN104716328A (en) * | 2014-11-18 | 2015-06-17 | 恩力能源科技（南通）有限公司 | Composite current collector material and preparation method thereof |
| CN204991823U (en) * | 2015-03-05 | 2016-01-20 | 新乡市超力新能源有限公司 | Cylinder zinc -nickel secondary cell |
| CN206210922U (en) * | 2016-11-14 | 2017-05-31 | 深圳拓邦股份有限公司 | Pole piece component, battery core and battery |
-
2016
- 2016-11-14 CN CN201611000680.2A patent/CN106450157A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202221792U (en) * | 2011-05-18 | 2012-05-16 | 海洋王照明科技股份有限公司 | Electrode of power battery |
| CN102306777A (en) * | 2011-08-30 | 2012-01-04 | 广州市云通磁电有限公司 | Positive electrode sheet of lithium iron phosphate type lithium ion battery, and preparation method thereof |
| CN104716328A (en) * | 2014-11-18 | 2015-06-17 | 恩力能源科技（南通）有限公司 | Composite current collector material and preparation method thereof |
| CN104577041A (en) * | 2015-01-08 | 2015-04-29 | 田东 | Method for preparing lithium ion battery negative plate by using carbon fiber cloth as matrix |
| CN104577053A (en) * | 2015-01-08 | 2015-04-29 | 田东 | Preparation method of silicon-carbon composite lithium ion battery negative plate |
| CN204991823U (en) * | 2015-03-05 | 2016-01-20 | 新乡市超力新能源有限公司 | Cylinder zinc -nickel secondary cell |
| CN206210922U (en) * | 2016-11-14 | 2017-05-31 | 深圳拓邦股份有限公司 | Pole piece component, battery core and battery |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110828775A (en) * | 2019-10-15 | 2020-02-21 | 江苏卓高新材料科技有限公司 | Current collector electrode structure, secondary battery and preparation method of secondary battery |
| CN113728509A (en) * | 2021-03-31 | 2021-11-30 | 宁德新能源科技有限公司 | Electrochemical device and electronic device |
| WO2022205183A1 (en) * | 2021-03-31 | 2022-10-06 | 宁德新能源科技有限公司 | Electrochemical apparatus and electronic apparatus |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170222 |
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| RJ01 | Rejection of invention patent application after publication |