CN202839840U - Pole piece roll structure - Google Patents
Pole piece roll structure Download PDFInfo
- Publication number
- CN202839840U CN202839840U CN2012202194065U CN201220219406U CN202839840U CN 202839840 U CN202839840 U CN 202839840U CN 2012202194065 U CN2012202194065 U CN 2012202194065U CN 201220219406 U CN201220219406 U CN 201220219406U CN 202839840 U CN202839840 U CN 202839840U
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- China
- Prior art keywords
- pole piece
- main body
- sides
- roll structure
- lug
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- 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.)
- Expired - Lifetime
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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
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Abstract
The utility model belongs to the technical field of lithium ion batteries and particularly relates to a pole piece roll structure capable of improving irregular winding of pole piece rolls. The structure comprises a wound pole piece body and tabs arranged on two sides of the pole piece body. Compared with the prior art, the tabs are arranged on two sides of the pole piece body, thicknesses on the two sides of the pole piece body can be balanced, balance of the two sides of the pole piece roll can be maintained under small deviation rectifying tension, therefore taper pole piece rolls are avoided, the irregular winding of the whole pole piece roll is improved, production line operation is facilitated, the breakage of the pole pieces during carrying of the pole piece roll can be avoided, and the safety performance of batteries is guaranteed; and additionally, the dislocation process capacity during winding of positive and negative pole pieces can be improved, product quality can be improved, the production line yield can be improved, waste is avoided, and the production cost is reduced.
Description
Technical field
The utility model belongs to technical field of lithium ion, relates in particular to a kind ofly can improve the uneven pole piece roll structure of pole piece roll rolling.
Background technology
The winding process of at present lithium ion battery employing, positive and negative plate all needs soldering polar ear before coiling is assembled into battery core.General way is: as depicted in figs. 1 and 2, at the compartment of terrain, the same side of pole piece main body 10 soldering polar ear 20, weld complete after, again the whole piece pole piece coiling is become pole piece roll, when making battery core, again pole piece roll is cut into one by one independently the pole piece with a lug 20.
Because lug 20 is welded on the same side of entire volume pole piece main body 10, and lug 20 itself has thickness, therefore the side thickness when reeling that is welded with lug 20 is larger, then thickness is not little for a side of soldering polar ear 20, therefore taper very easily appears in whole pole piece roll, causes the uneven problem of rolling, and not only the operation of line is produced in impact, also can cause the damaging problem of pole piece when carrying, cause the potential safety hazard of battery core; But also can affect follow-uply with reel the both positive and negative polarity alignment dislocation when being assembled into battery core of positive plate, barrier film and negative plate, the qualification rate that causes producing line is low, process capability is not enough.
In view of this, necessaryly provide a kind of pole piece roll structure that can improve the uneven problem of pole piece roll rolling, with improve the operation of producing line, the damaging problem of pole piece when preventing from carrying; Improve the process capability of the both positive and negative polarity alignment dislocation of coiling operation, make the quality, the yield that produce line more arrive improvement.
The utility model content
The purpose of this utility model is: for the deficiencies in the prior art, and provide a kind of pole piece roll structure that can improve the uneven problem of pole piece roll rolling, with the operation of improve producing line, the damaging problem of pole piece when preventing from carrying; Improve the process capability of the both positive and negative polarity alignment dislocation of coiling operation, make the quality, the yield that produce line more arrive improvement, the uneven problem of rolling easily occurs to overcome pole piece roll structure of the prior art.
In order to achieve the above object, the utility model adopts following technical scheme:
A kind of pole piece roll structure comprises the pole piece main body of coiling and is arranged at the lug of described pole piece main body that described lug is arranged at the both sides of described pole piece main body.
As a kind of improvement of the utility model pole piece roll structure, described tab welding is in the both sides of described pole piece main body.
As a kind of improvement of the utility model pole piece roll structure, described lug is crisscross arranged in the both sides of described pole piece main body.
As a kind of improvement of the utility model pole piece roll structure, in a circumferential direction, described lug is spaced set in the both sides of described pole piece main body.
As a kind of improvement of the utility model pole piece roll structure, the equal in length of described lug.
As a kind of improvement of the utility model pole piece roll structure, described lug exceeds the equal in length of described pole piece main body.
As a kind of improvement of the utility model pole piece roll structure, the width of described lug equates.
As a kind of improvement of the utility model pole piece roll structure, the thickness of described lug equates.
As a kind of improvement of the utility model pole piece roll structure, described pole piece main body comprises positive plate main body and negative plate main body.
As a kind of improvement of the utility model pole piece roll structure, described lug is symmetrically distributed in the both sides of described pole piece main body.
With respect to prior art, the utility model is by being arranged on lug the both sides of pole piece main body, thickness that can balance pole piece main body both sides, can under less correction tension force, make the pole piece roll both sides keep balance, the thickness of both sides be reached unanimity, thereby avoid the appearance of taper pole piece roll, improved the uneven problem of rolling of whole pole piece roll, made things convenient for the operation of product line, the pole piece damaging problem when avoiding the pole piece roll carrying, thereby the security performance of assurance battery; And the process capability to its dislocation when adopting pole piece roll structure of the present utility model can also improve the positive/negative plate coiling improves product quality, improves and produces the line yield, avoids waste, and reduces production costs.
Description of drawings
Below in conjunction with the drawings and specific embodiments, describe the utility model and useful technique effect thereof in detail, wherein:
Fig. 1 is pole piece roll structure of the prior art;
Fig. 2 is after pole piece roll structure of the prior art is launched, wherein one section structural representation.
Fig. 3 is structural representation of the present utility model;
Fig. 4 is after the utility model pole piece roll structure is launched, wherein a kind of structural representation of one section;
Fig. 5 is after the utility model pole piece roll structure is launched, wherein one section another kind of structural representation.
Embodiment
Below in conjunction with accompanying drawing the utility model and beneficial effect thereof are described in detail, but embodiment of the present utility model is not limited to this:
As shown in Figure 3, a kind of pole piece roll structure that the utility model provides comprises the pole piece main body 1 of coiling and is arranged at the lug 2 of pole piece main body 1 that lug 2 is arranged at the both sides of pole piece main body 1.
Wherein, lug 2 is welded in the both sides of pole piece main body 1, welding can make between lug 2 and the pole piece main body 1 be connected more firm.
Lug 2 is crisscross arranged in the both sides of pole piece main body 1, makes the thickness balance of pole piece main body 1 both sides, prevents the appearance of taper pole piece roll.
In a circumferential direction, lug 2 is spaced set in the both sides of pole piece main body 1, when making battery core, pole piece roll need to be cut into one by one independently the pole piece with at least one lug 2, the length that the both sides that lug 2 is arranged at intervals at pole piece main body 1 can obtain pole piece main body 1 is identical, and the pole piece of the position consistency of lug 2.
The equal in length of lug 2, the consistency of the pole piece of raising mass production.
Lug 2 exceeds the equal in length of pole piece main body 1, improves the consistency of the pole piece of mass production.
The width of lug 2 equates, improves the consistency of the pole piece of mass production.
The thickness of lug 2 equates, improves the consistency of the pole piece of mass production.
Pole piece main body 1 comprises positive plate main body and negative plate main body.
Lug 2 is symmetrically distributed in the both sides of pole piece main body 1, and the thickness of the pole piece roll both sides of this structure is more balanced, can better prevent the appearance of taper pole piece roll.
During concrete operations, first slurry is coated on (the leaving a blank collector is to be used as soldering polar ear 2) on the collector, gets pole piece main body 1 through cold compaction, then soldering polar ear 2 on the blank collector of pole piece main body 1.The welding manner of lug 2 namely both can be spaced apart and arranged in lug 2 both sides (as shown in Figure 4) of pole piece main body 1 as shown in Figure 4 and Figure 5, also lug 2 can be welded on symmetrically the both sides (as shown in Figure 5) of pole piece main body 1.And then be wound into pole piece roll with the pole piece main body 1 that winding mechanism will be welded with lug 2, get final product.Follow-uply again pole piece roll is cut into suitable size, make the used pole piece of coiling battery core.
Practice shows, after adopting pole piece roll structure of the present utility model, produce the CPK (Measure of Process Capability of pole piece roll, it is a kind of method that represents processing procedure level height, its Essential Action is the height of reaction procedure qualification rate, and the CPK value is larger, and the expression quality is better) rise to 1.3 by 0.8, this show adopt pole piece roll structure of the present utility model after, the quality of product and yield all be improved significantly.
The according to the above description announcement of book and instruction, the utility model those skilled in the art can also carry out suitable change and modification to above-mentioned execution mode.Therefore, the embodiment that discloses and describe above the utility model is not limited to also should fall in the protection range of claim of the present utility model modifications and changes more of the present utility model.In addition, although used some specific terms in this specification, these terms do not consist of any restriction to the utility model just for convenience of description.
Claims (10)
1. pole piece roll structure comprises the pole piece main body of coiling and is arranged at the lug of described pole piece main body that it is characterized in that: described lug is arranged at the both sides of described pole piece main body.
2. pole piece roll structure according to claim 1, it is characterized in that: described tab welding is in the both sides of described pole piece main body.
3. pole piece roll structure according to claim 1, it is characterized in that: described lug is crisscross arranged in the both sides of described pole piece main body.
4. pole piece roll structure according to claim 1, it is characterized in that: in a circumferential direction, described lug is spaced set in the both sides of described pole piece main body.
5. pole piece roll structure according to claim 1 is characterized in that: the equal in length of described lug.
6. pole piece roll structure according to claim 1, it is characterized in that: described lug exceeds the equal in length of described pole piece main body.
7. pole piece roll structure according to claim 1 is characterized in that: the width of described lug equates.
8. pole piece roll structure according to claim 1 is characterized in that: the thickness of described lug equates.
9. pole piece roll structure according to claim 1, it is characterized in that: described pole piece main body comprises positive plate main body and negative plate main body.
10. pole piece roll structure according to claim 1, it is characterized in that: described lug is symmetrically distributed in the both sides of described pole piece main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202194065U CN202839840U (en) | 2012-05-15 | 2012-05-15 | Pole piece roll structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202194065U CN202839840U (en) | 2012-05-15 | 2012-05-15 | Pole piece roll structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202839840U true CN202839840U (en) | 2013-03-27 |
Family
ID=47951470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202194065U Expired - Lifetime CN202839840U (en) | 2012-05-15 | 2012-05-15 | Pole piece roll structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202839840U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105164846A (en) * | 2014-03-26 | 2015-12-16 | 日本麦可罗尼克斯股份有限公司 | Multilayer secondary battery |
| CN110870099A (en) * | 2017-07-18 | 2020-03-06 | 戴森技术有限公司 | Energy storage device |
| CN113036315A (en) * | 2019-12-25 | 2021-06-25 | 华为技术有限公司 | Battery and terminal equipment |
-
2012
- 2012-05-15 CN CN2012202194065U patent/CN202839840U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105164846A (en) * | 2014-03-26 | 2015-12-16 | 日本麦可罗尼克斯股份有限公司 | Multilayer secondary battery |
| EP3131148A4 (en) * | 2014-03-26 | 2017-11-08 | Kabushiki Kaisha Nihon Micronics | Multilayer secondary battery |
| CN105164846B (en) * | 2014-03-26 | 2018-03-30 | 日本麦可罗尼克斯股份有限公司 | Stacking-typed secondary battery |
| CN110870099A (en) * | 2017-07-18 | 2020-03-06 | 戴森技术有限公司 | Energy storage device |
| CN110870099B (en) * | 2017-07-18 | 2023-05-12 | 戴森技术有限公司 | Energy storage device |
| CN113036315A (en) * | 2019-12-25 | 2021-06-25 | 华为技术有限公司 | Battery and terminal equipment |
| EP4068495A4 (en) * | 2019-12-25 | 2023-08-16 | Huawei Technologies Co., Ltd. | Battery and terminal device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130327 |
|
| CX01 | Expiry of patent term |