CN204577529U - A kind of cylindrical lithium ion battery pole piece winding-structure - Google Patents
A kind of cylindrical lithium ion battery pole piece winding-structure Download PDFInfo
- Publication number
- CN204577529U CN204577529U CN201520265181.0U CN201520265181U CN204577529U CN 204577529 U CN204577529 U CN 204577529U CN 201520265181 U CN201520265181 U CN 201520265181U CN 204577529 U CN204577529 U CN 204577529U
- Authority
- CN
- China
- Prior art keywords
- negative
- lug
- plate
- positive
- district
- 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
-
- 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
Landscapes
- Battery Electrode And Active Subsutance (AREA)
Abstract
The utility model belongs to field of lithium, particularly discloses a kind of cylindrical lithium ion battery pole piece winding-structure; Solve the high internal resistance heating problem that lug designs and winding method is unreasonable caused of existing cylindrical lithium ion cell core; The technical problem adopted comprises positive plate, negative plate and barrier film, barrier film, positive plate and negative plate are wound as cylindrical structural, separated by barrier film between positive plate and negative plate, positive plate is connected with middle part positive pole ear and external positive lug, negative plate is connected with middle part negative lug and outside negative lug, middle part positive pole ear and middle part negative lug are arranged on the inner ring of cylindrical structural and the two is oppositely arranged, and external positive lug and outside negative lug are arranged on the outer ring of cylindrical structural and the two is oppositely arranged.
Description
Technical field
The utility model belongs to field of lithium, particularly relates to a kind of cylindrical lithium ion battery pole piece winding-structure.
Background technology
Tradition rate battery cathode sheet often adopts two copper polar ears or two nickel lug, when some back welding because the contact resistance of copper and copper is significantly less than the contact resistance of copper and box hat nickel dam, during so easy appearance welding, energy distribution is uneven and cause copper and box hat nickel dam to cross weldering, the phenomenon of copper and layers of copper rosin joint occurs, and negative pole adopts two nickel lug can not play again the effect reducing internal resistance; The more important thing is reel into time head positive and negative lug distance relatively closely even overlap cause battery core work time lug heating region concentrated, have the overheated danger of battery core.
Utility model content
The utility model overcomes the deficiency that prior art exists, solve lug design and unreasonable the caused high internal resistance heating problem of winding method of existing cylindrical lithium ion cell core, provide a kind of and reduce lithium battery internal resistance, improve battery core high rate performance and effectively can avoid a kind of cylindrical lithium ion battery pole piece winding-structure of both positive and negative polarity lug heat radiation difficult problem.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of cylindrical lithium ion battery pole piece winding-structure, comprise positive plate, negative plate and barrier film, barrier film, positive plate and negative plate are wound as cylindrical structural, separated by barrier film between positive plate and negative plate, positive plate is connected with middle part positive pole ear and external positive lug, negative plate is connected with middle part negative lug and outside negative lug, middle part positive pole ear and middle part negative lug are arranged on the inner ring of cylindrical structural and the two is oppositely arranged, external positive lug and outside negative lug are arranged on the outer ring of cylindrical structural and the two is oppositely arranged.
Preferably, the deployed configuration of described positive plate is: the middle part of positive plate length direction and head are provided with Kong Bo district in the middle part of positive plate, positive plate head Kong Bo district, the remainder of positive plate is coated with active material mixed slurry, and described middle part positive pole ear and external positive lug are welded on Kong Bo district in the middle part of positive plate head Kong Bo district and positive plate respectively.
Preferably, the deployed configuration of described negative plate is: the both sides of negative plate length direction are provided with negative plate head Kong Bo district, negative plate afterbody Kong Bo district, the remainder of negative plate is coated with active material mixed slurry, and described middle part negative lug and outside negative lug are welded on negative plate head Kong Bo district and negative plate afterbody Kong Bo district respectively.
Preferably, described middle part negative lug and outside negative lug are copper nickel compound lug.
Preferably, the upper surface length 13-15 centimetre longer than the length of lower surface in negative plate head Kong Bo district, the upper surface length 57-59 centimetre shorter in lower surface length in afterbody Kong Bo district.
The utility model compared with prior art has following beneficial effect: after lithium ion battery of the present utility model has reeled, middle part positive pole ear and middle part negative lug are oppositely arranged at the intracardiac circle of volume, can effectively avoid battery core operationally the work of especially large multiplying power time, middle part negative lug heating region is concentrated and the situation of difficulty of dispelling the heat occurs, improves the security performance of battery core.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in more detail.
Fig. 1 is the utility model lithium ion battery structure schematic diagram.
Fig. 2 is the structural representation after positive plate launches.
Fig. 3 is the structural representation after negative plate launches.
In figure: 1 is positive plate, 11 is middle part positive pole ear, 12 is external positive lug, 13 is that Kong Bo district in the middle part of positive plate, 14 is for positive plate head Kong Bo district, 2 is negative plate, and 21 is middle part negative lug, and 22 is outside negative lug, 23 is negative plate head Kong Bo district, and 24 is negative plate afterbody Kong Bo district.
Embodiment
As shown in Figure 1, a kind of cylindrical lithium ion battery pole piece winding-structure, comprise positive plate 1, negative plate 2 and barrier film, barrier film, positive plate 1 and negative plate 2 are wound as cylindrical structural, separated by barrier film between positive plate 1 and negative plate 2, positive plate 1 is connected with middle part positive pole ear 11 and external positive lug 12, negative plate 2 is connected with middle part negative lug 21 and outside negative lug 22, middle part positive pole ear 11 and middle part negative lug 21 are arranged on the inner ring of cylindrical structural and the two is oppositely arranged, external positive lug 12 and outside negative lug 22 are arranged on the outer ring of cylindrical structural and the two is oppositely arranged.
As shown in Figure 2, the deployed configuration of positive plate 1 is: the middle part of positive plate 1 length direction and head are provided with Kong Bo district 13 in the middle part of positive plate, positive plate head Kong Bo district 14, the remainder of positive plate 1 is coated with active material mixed slurry, and described middle part positive pole ear 11 and external positive lug 12 are welded on Kong Bo district 13 in the middle part of positive plate head Kong Bo district 14 and positive plate respectively.
As shown in Figure 3, the deployed configuration of negative plate 2 is: the both sides of negative plate 2 length direction are provided with negative plate head Kong Bo district 23, negative plate afterbody Kong Bo district 24, the remainder of negative plate 2 is coated with active material mixed slurry, the upper surface length 13-15 centimetre longer than the length of lower surface in negative plate head Kong Bo district 23, the upper surface length 57-59 centimetre shorter in lower surface length in afterbody Kong Bo district, described middle part negative lug 21 and outside negative lug 22 are welded on the upper surface in negative plate head Kong Bo district 23 and negative plate afterbody Kong Bo district 24 respectively.
Middle part positive pole ear 11 and external positive lug 12 points are located at positive plate 1 length direction head and middle part, and middle part negative lug 21 and outside negative lug 22 points are located at negative plate 2 two ends, effectively reduce the internal resistance of battery, improve battery core high rate performance.
During winding, first pre-roll barrier film two encloses, then negative lug 21 one end two, volume middle part circle is entered, finally enter positive pole ear 11 one end, volume middle part, after entirety has reeled, middle part positive pole ear 11 and middle part negative lug 21 are arranged on the inner ring of cylindrical structural and the two is oppositely arranged, and external positive lug 12 and outside negative lug 22 are arranged on the outer ring of cylindrical structural and the two is oppositely arranged.First enter to roll up negative plate 2 liang of circles during winding and reenter volume positive plate 1, be conducive to the heat radiation of negative lug, to a certain degree decrease the use length of barrier film simultaneously, saved expensive barrier film use cost.
Preferably, middle part negative lug 21 and outside negative lug 22 are copper nickel compound lug.Employing copper nickel compound lug, solves employing copper polar ear or nickel tab welding energy is uneven or the higher problem of internal resistance.
By reference to the accompanying drawings embodiment of the present utility model is explained in detail above, but the utility model is not limited to above-described embodiment, in the ken that those of ordinary skill in the art possess, various change can also be made under the prerequisite not departing from the utility model aim.
Claims (5)
1. a cylindrical lithium ion battery pole piece winding-structure, it is characterized in that: comprise positive plate (1), negative plate (2) and barrier film, barrier film, positive plate (1) and negative plate (2) are wound as cylindrical structural, separated by barrier film between positive plate (1) and negative plate (2), positive plate (1) is connected with middle part positive pole ear (11) and external positive lug (12), negative plate (2) is connected with middle part negative lug (21) and outside negative lug (22), middle part positive pole ear (11) and middle part negative lug (21) are arranged on the inner ring of cylindrical structural and the two is oppositely arranged, external positive lug (12) and outside negative lug (22) are arranged on the outer ring of cylindrical structural and the two is oppositely arranged.
2. a kind of cylindrical lithium ion battery pole piece winding-structure according to claim 1, it is characterized in that: the deployed configuration of described positive plate (1) is: the middle part of positive plate (1) length direction and head are provided with Kong Bo district (13) in the middle part of positive plate, positive plate head Kong Bo district (14), the remainder of positive plate (1) is coated with active material mixed slurry, and described middle part positive pole ear (11) and external positive lug (12) are welded on Kong Bo district (13) in the middle part of positive plate head Kong Bo district (14) and positive plate respectively.
3. a kind of cylindrical lithium ion battery pole piece winding-structure according to claim 1, it is characterized in that: the deployed configuration of described negative plate (2) is: the both sides of negative plate (2) length direction are provided with negative plate head Kong Bo district (23), negative plate afterbody Kong Bo district (24), the remainder of negative plate (2) is coated with active material mixed slurry, and described middle part negative lug (21) and outside negative lug (22) are welded on negative plate head Kong Bo district (23) and negative plate afterbody Kong Bo district (24) respectively.
4. a kind of cylindrical lithium ion battery pole piece winding-structure according to claim 3, is characterized in that: described middle part negative lug (21) and outside negative lug (22) are copper nickel compound lug.
5. a kind of cylindrical lithium ion battery pole piece winding-structure according to claim 3, it is characterized in that: the upper surface length 13-15 centimetre longer than the length of lower surface in negative plate head Kong Bo district (23), the upper surface length 57-59 centimetre shorter in lower surface length in negative plate afterbody Kong Bo district (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520265181.0U CN204577529U (en) | 2015-04-29 | 2015-04-29 | A kind of cylindrical lithium ion battery pole piece winding-structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520265181.0U CN204577529U (en) | 2015-04-29 | 2015-04-29 | A kind of cylindrical lithium ion battery pole piece winding-structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204577529U true CN204577529U (en) | 2015-08-19 |
Family
ID=53870126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520265181.0U Active CN204577529U (en) | 2015-04-29 | 2015-04-29 | A kind of cylindrical lithium ion battery pole piece winding-structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204577529U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110611116A (en) * | 2019-09-26 | 2019-12-24 | 广东微电新能源有限公司 | Electrode plate for battery roll core and columnar or button battery |
| WO2021057210A1 (en) * | 2019-09-26 | 2021-04-01 | 广东微电新能源有限公司 | Electrode pad for battery roll core, and cylindrical or button battery |
| WO2023165349A1 (en) * | 2022-03-04 | 2023-09-07 | 宁德新能源科技有限公司 | Electrochemical apparatus and electrical device |
-
2015
- 2015-04-29 CN CN201520265181.0U patent/CN204577529U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110611116A (en) * | 2019-09-26 | 2019-12-24 | 广东微电新能源有限公司 | Electrode plate for battery roll core and columnar or button battery |
| WO2021057210A1 (en) * | 2019-09-26 | 2021-04-01 | 广东微电新能源有限公司 | Electrode pad for battery roll core, and cylindrical or button battery |
| EP4040551A4 (en) * | 2019-09-26 | 2024-06-19 | Guangdong Mic-power New Energy Co., Ltd. | Electrode pad for battery roll core, and cylindrical or button battery |
| WO2023165349A1 (en) * | 2022-03-04 | 2023-09-07 | 宁德新能源科技有限公司 | Electrochemical apparatus and electrical device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105470558B (en) | Cylindrical lithium ion battery and preparation method thereof | |
| TWI517477B (en) | A large capacity cylindrical lithium ion battery and its production method | |
| CN202495523U (en) | Lithium ion battery and electrode plate thereof | |
| CN204577529U (en) | A kind of cylindrical lithium ion battery pole piece winding-structure | |
| CN206471409U (en) | A kind of negative plate | |
| CN105742721A (en) | High-energy-ratio low-internal-resistance cylindrical lithium ion battery | |
| CN203774413U (en) | Polymer lithium ion battery cell structure | |
| CN205646032U (en) | High energy compares, cylindrical lithium ion battery of low internal resistance | |
| CN102315412A (en) | Lithium ion power battery pole group | |
| CN206116541U (en) | Cylindrical lithium ion battery electric core of convoluteing | |
| CN204680727U (en) | Flexible package 18650 cell electrode structure | |
| CN202839840U (en) | Pole piece roll structure | |
| CN203288678U (en) | Welding structure for core connecting sheet and anode lug | |
| CN203774408U (en) | Power energy-storage polymer lithium ion battery | |
| CN203367419U (en) | Wound electrode plate and lithium ion battery formed by winding same | |
| CN203787523U (en) | Novel winding structure for high-rate power lithium ion battery electrode piece | |
| CN206259434U (en) | A kind of ultra-high magnifications polymer Li-ion battery | |
| CN109244526A (en) | A kind of novel battery | |
| CN204927434U (en) | Square power soft package lithium ion battery | |
| CN206293565U (en) | The wound pole group structure of arc battery winding | |
| CN107819101A (en) | A kind of extreme ear structure for square coiled battery | |
| CN204155765U (en) | A kind of high tension super capacitor | |
| CN208539029U (en) | Drying box is used in a kind of production of the lithium ion battery that security performance is high | |
| CN202308135U (en) | Negative pole piece and lug structure for power battery | |
| CN108206302B (en) | Lithium ion battery winding structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |