CN206210922U - Pole piece component, battery core and battery - Google Patents
Pole piece component, battery core and battery Download PDFInfo
- Publication number
- CN206210922U CN206210922U CN201621222580.XU CN201621222580U CN206210922U CN 206210922 U CN206210922 U CN 206210922U CN 201621222580 U CN201621222580 U CN 201621222580U CN 206210922 U CN206210922 U CN 206210922U
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- CN
- China
- Prior art keywords
- pole piece
- battery core
- lug
- adhesive layer
- conductive adhesive
- Prior art date
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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
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- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model discloses a kind of pole piece component, battery core and battery, pole piece component includes pole piece, the lug and conductive adhesive layer being connected 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.The utility model connects pole piece and lug by setting conductive adhesive layer on pole piece, and the connection area between increase lug and pole piece can improve the electric conductivity of battery core, improve the high rate performance of battery core.
Description
Technical field
The utility model is related 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, power network energy storage, and market is to battery
Quick charge and big multiplying power discharging requirement more and more higher.
In current lithium ion battery manufacturing process, connected with solder joint or into bar weldering print between lug and pole piece, between the two
Connection is not firm, easily disconnects, and influences the electric conductivity of battery core, is unfavorable for the raising of battery high rate performance.
Utility model content
The technical problems to be solved in the utility model is, there is provided a kind of pole piece group for improving electric conductivity and high rate performance
Part, battery core and battery using the pole piece component.
The utility model solves the technical scheme that its technical problem used：A kind of pole piece component is provided, including pole piece,
It is connected to lug and conductive adhesive layer on the pole piece；The conductive adhesive layer is covered on the lug and pole piece, and conductive
Connect 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；It is 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.
The utility model also provides a kind of battery core, including the laminated construction for being wound into column；The laminated construction includes
Positive plate, negative plate, the barrier film being stacked between the positive plate and negative plate；The positive plate and/or negative plate are above-mentioned
Pole piece component described in any one.
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 utility model also provides a kind of battery, including battery core, shell described in any of the above；The battery core is arranged on
It is connected in the shell and with the housings conductive.
The beneficial effects of the utility model：By setting conductive adhesive layer on pole piece, pole piece and lug are connected, increase lug
Connection area between pole piece, can improve the electric conductivity of battery core, improve the high rate performance of battery core.
In addition, finished up with the foil of pole piece by battery core (core) outmost turns and 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.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing：
Fig. 1 is the structural representation of the pole piece component of the embodiment of the utility model one；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the structural representation of the battery core of the embodiment of the utility model one；
Fig. 4 is that figure is compared in the internal resistance that the battery core that pole piece component is made in the utility model is measured with traditional battery core；
Fig. 5 is that heavy-current discharge holds at a set temperature with traditional battery core for pole piece component is made in the utility model battery core
Amount conservation rate compares figure.
Specific embodiment
In order to be more clearly understood to technical characteristic of the present utility model, purpose and effect, accompanying drawing is now compareed detailed
Illustrate specific embodiment of the present utility model.
As shown in Figure 1, 2, the pole piece component of the embodiment of the utility model one, for battery core, it includes pole piece 10, is connected to
Lug 20 and conductive adhesive layer 30 on pole piece 10.Conductive adhesive layer 30 is covered on lug 20 and pole piece 10, and is conductively connected pole
Ear 20 and pole piece 10.
Wherein, pole piece 10 includes foil 11, the slurry coating 12 being coated in the opposite sides of foil 11.Foil 11 can select
Copper Foil.Slurry coating 12 can be formed by anode sizing agent, so that pole piece 10 is positive plate；Or, slurry coating 12 is by cathode size
Formed, so that pole piece 10 is negative plate.
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 the surface of lug 30 and extends to the bottom surface of locating slot 13 (surface of foil 11) so that foil
11 are electrically connected by conductive adhesive layer 30 with lug 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 locating slot 13 be covered.
Alternatively, conductive adhesive layer 30 extends to its side wall and connects with slurry coating 12 in locating slot 13；Or, lead
The edge of electric glue-line 30 is extended on slurry coating 12, bonding strength of the enhancing 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.Similarly, it is 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 at respectively on the both sides of pole piece 10
132.First locating slot 131 and the second locating slot 132 are relative, and respectively from insertion on the slurry coating 12 of the both sides of foil 11 to paper tinsel
The surface of material 11.Lug 30 is arranged in the first locating slot 131, and from the both sides of foil 11, lug 20 is positioned and welded welding equipment by operation
It is connected on foil 11.
Will to be 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
Second conductive adhesive layer 32 of the second locating slot 132 of conductive adhesive layer 31 and covering.
Further, conductive adhesive layer 30 can be structural conductive glue, refer to itself it is conductive or doped after have
The conducting polymer of electric conductivity is made；Conducting polymer is also referred to as intrinsically conducting macromolecular material, is by with conjugation ∏ keys
Or partly conjugated macromolecule is through chemistry or electrochemistry " doping ", the family macromolecule material for making it be changed into 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
Into.Non-conductive matrix mainly has following a few classes：Epoxies, such as epoxy resin；Silicone or non-conductive polymer.What is 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 the embodiment of the utility model one, including the laminated construction for being wound into column 40.Lamination
Structure includes positive plate, negative plate, the barrier film being stacked between positive plate and negative plate.Lug point on positive plate and negative plate
Two ends of battery core are not stretched out.
Wherein, positive plate and/or negative plate are above-mentioned pole piece component.
Generally, outmost turns part is negative plate in battery core.Further, to improve being electrically connected for negative plate and battery case
Connect, conducting resinl 50 can be set in battery core outmost turns, can be used as another lug and cage connection of negative pole.
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.
Conducting resinl 50 can envelope negative plate edge side in battery core outmost turns, play fixation, it is ensured that battery core (volume
Core) it is not loose.Additionally, the also conductive function of conducting resinl 50, can be such that exposed foil is contacted with shell completely.
Conducting resinl 50 can be made with the above-mentioned identical material of conductive adhesive layer 30.
The battery of the embodiment of the utility model one, including shell and above-mentioned battery core；Battery core be arranged in shell and with
Housings conductive is connected.Wherein, by the setting of conducting resinl on battery core outer ring, it can contact with shell wall in shell and be electrically connected
Connect, with reference to the setting of conductive adhesive layer on positive plate and/or negative plate, improve the electric conductivity of battery core, reduce battery core internal resistance, improve electricity
The high rate performance of core.
The battery core that pole piece component of the present utility model is made is measured with traditional battery core (conductive adhesive layer is not provided with pole piece)
Internal resistance, at a set temperature heavy-current discharge capability retention be 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 interior of the utility model battery core
Resistance.It can be seen that the internal resistance of the utility model battery core is less than the internal resistance of traditional battery core, both internal resistances difference 10m Ω -15m Ω.
In Fig. 5, the left side is the discharge capacitance of traditional battery core in each group of cylinder, and the right is the utility model battery core
Discharge capacitance.It can be seen that the utility model battery core heavy-current discharge capability retention is high at a set temperature
In the heavy-current discharge capability retention of traditional battery core, heavy-current discharge capability retention difference 35%；34 DEG C of temperature difference.
Embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited, it is every
The equivalent structure or equivalent flow conversion made using the utility model specification and accompanying drawing content, or be directly or indirectly used in
Other related technical fields, are similarly included in scope of patent protection of the present utility model.
Claims (8)
1. a kind of pole piece component, it is characterised in that including pole piece, the lug and conductive adhesive layer that are connected on the pole piece；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
On 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. a kind of battery core, it is characterised in that the laminated construction including being wound into 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 1-4
Pole piece component described in any one.
6. battery core according to claim 5, it is characterised in that the lug on the positive plate and negative plate stretches out institute respectively
State two ends of battery core.
7. battery core according to claim 5, 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.
8. a kind of battery, it is characterised in that including battery core, shell described in claim any one of 5-7；The battery core is arranged on
It is connected in the shell and with the housings conductive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621222580.XU CN206210922U (en) | 2016-11-14 | 2016-11-14 | Pole piece component, battery core and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621222580.XU CN206210922U (en) | 2016-11-14 | 2016-11-14 | Pole piece component, battery core and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206210922U true CN206210922U (en) | 2017-05-31 |
Family
ID=58752682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621222580.XU Active CN206210922U (en) | 2016-11-14 | 2016-11-14 | Pole piece component, battery core and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206210922U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106450157A (en) * | 2016-11-14 | 2017-02-22 | 深圳拓邦股份有限公司 | Pole piece component, electric core and battery |
| CN113036075A (en) * | 2021-02-26 | 2021-06-25 | 珠海冠宇电池股份有限公司 | Pole piece and battery cell |
-
2016
- 2016-11-14 CN CN201621222580.XU patent/CN206210922U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106450157A (en) * | 2016-11-14 | 2017-02-22 | 深圳拓邦股份有限公司 | Pole piece component, electric core and battery |
| CN113036075A (en) * | 2021-02-26 | 2021-06-25 | 珠海冠宇电池股份有限公司 | Pole piece and battery cell |
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