CN202221795U - Pole piece for laminated lithium-ion batteries and laminated fixture - Google Patents
Pole piece for laminated lithium-ion batteries and laminated fixture Download PDFInfo
- Publication number
- CN202221795U CN202221795U CN2011203493924U CN201120349392U CN202221795U CN 202221795 U CN202221795 U CN 202221795U CN 2011203493924 U CN2011203493924 U CN 2011203493924U CN 201120349392 U CN201120349392 U CN 201120349392U CN 202221795 U CN202221795 U CN 202221795U
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- Prior art keywords
- pole piece
- lamination
- lithium ion
- outstanding muscle
- welding position
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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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- 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 belongs to the field of lithium-ion batteries and discloses a pole piece for laminated lithium-ion batteries and a laminated fixture. The pole piece comprises a pole piece body and a pole ear welding position, wherein the pole piece body is composed of metal foils and an electrode material coating layer coated at the surface of the metal foils; the pole ear welding position extends and extrudes at the metal foils of one end part of the pole piece body; and the final end on the pole ear welding position corresponding to the pole piece body is provided with a gap. The pole piece is adopted to be conductive to avoiding pole piece shifting in laminations.
Description
Technical field
The utility model relates to the lithium ion battery field, relates in particular to a kind of lamination lithium ion battery and uses pole piece.
Background technology
The flexible packing lithium ion laminated batteries realizes that owing to it is easy high magnification output is widely used in high-power power lithium-ion battery group.
The structure of flexible packing lithium ion battery is mainly following: the outside of this lithium ion soft-package battery is aluminum plastic film, anode ear, negative electrode lug, and an end of this anode ear, negative electrode lug is electrically connected with positive plate, negative plate respectively; There is the lamination up and down of positive plate and negative plate the inside of this lithium ion soft-package battery, is isolated by diaphragm paper between arbitrary positive plate and the negative plate, pours into the electrolyte of capacity again.
The operation principle of flexible packing lithium ion battery is: during charging; Outer year DC power supply; Under the effect of extrinsic current, force the lithium ion of the active material on the positive plate of inside battery from positive plate, to take off embedding and come out, be embedded into through electrolyte in the active material on negative plate surface; Simultaneously, the electronics in the active material on the positive plate then carries DC power supply and negative electrode lug through anode ear through outward, reaches in the active material on negative plate surface; During discharge; The both positive and negative polarity of external load (power consumption equipment) connects the both positive and negative polarity (being the exposed junction of the positive and negative lug of battery) of battery respectively; Form under the channel status; Owing to battery plus-negative plate electrical potential difference reason, force active material on the negative plate of inside battery in embedded lithium ion from negative plate, take off embedding and come out, get back to through the electrolyte embedding in the active material on positive plate surface; Simultaneously, the electronics in the active material on the negative plate then passes through negative electrode lug through external load (power consumption equipment) and anode ear, reaches in the active material on positive plate surface.
No matter be machine lamination or manual lamination, it is mainly following that the lamination system of laminated type lithium electricity battery is made method:, this lamination body is cascaded by the positive plate negative plate, is isolated by diaphragm paper between positive plate and the negative plate.
Present lamination body mainly contains two kinds of automatic lamination and manual laminations, and lamination adopts the automatic lamination of automatic lamination machine to form automatically, but because the production efficiency of lamination machine is too low automatically, equipment cost and maintenance cost are high, so its application receives certain restriction.
Referring to Fig. 1,2, shown in 3, manual lamination mainly is to adopt a lamination tool 301.When lamination: Fig. 1, the positive plate 101 shown in 2, negative plate 201 are inserted in the lamination tool 301 shown in Figure 3; Every when range upon range of; After a range upon range of positive plate 101, continuous barrier film is walked around from side (medial surface of the groove of lamination tool 301) " Z " font of positive plate 101 tops, insert negative plate 201 then; Make negative plate 201 be layered in the upper surface of barrier film, continue to adopt above-mentioned laminating method to carry out lamination and handle.Making membrane layer integral body be " Z " font monitor layer is stacked between every positive plate 101 and the negative plate 201.
The inventor finds in carrying out the utility model research process, adopts the laminating method shown in Fig. 1-3 to have following defective:
In the manual lamination process of prior art, positive plate 101 and negative plate 201 are irregular easily, particularly uneven on the fore-and-aft direction of lamination body; If range upon range of cell thickness when thicker (general lamination body thickness is greater than 5.0mm) this irregular situation can be more serious.And as far as the lamination lithium ion battery, if the lamination body is irregular, not only can influence battery outward appearance and size, be unfavorable for the capacity performance, but also can cause internal short-circuit of battery, badly influence the safe application performance of battery., be unfavorable for the development and the use of high power capacity high magnification soft package lithium ion power battery especially.
In the prior art and for fear of above-mentioned situation; Multiple tracks check also need be set in the lamination operation checks on and does over again and multiple tracks protection operation such as reprocess; The defective that exists cost of labor and material cost to increase; The setting of this multiple tracks inspection process has simultaneously also influenced production efficiency, the influence delivery friendship phase.
The utility model content
The utility model embodiment first purpose is to provide: a kind of lamination lithium ion battery is used pole piece, adopts this pole piece to help in lamination, avoiding the pole piece displacement.
The utility model embodiment second purpose is to provide: a kind of lamination tool, adopt this lamination tool to carry out lithium ion battery lamination and help avoiding the pole piece displacement.
A kind of lamination lithium ion battery that the utility model embodiment provides is used pole piece, comprising: pole piece body and lug welding position;
Said pole piece body is made up of: metal foil and the electrode material coating layer that is coated in said metal foil surface;
Said lug welding position is: extends and gives prominence to metal foil in said pole piece body one end,
On said lug welding position, be provided with breach with said pole piece body opposing ends.
Alternatively, said breach is " V " font.
A kind of lithium ion battery lamination tool that the utility model embodiment provides comprises cell body, is provided with upright cell wall at the both sides and the first end of said cell body,
Inwall at the cell wall of said cell body first end is provided with the first outstanding muscle, the second outstanding muscle, and the said first outstanding muscle, the second outstanding muscle extend perpendicularly to the bottom of said cell body respectively,
When in said cell body, piling up when above-mentioned positive plate, negative plate are arranged, the end of the said first outstanding muscle and the second outstanding muscle can be limited in respectively: in the breach of the lug welding position of said positive plate, negative plate.
Alternatively, the end of the said first outstanding muscle and the second outstanding muscle is outstanding " V " font.
Alternatively, also be provided with plurality of through holes in the bottom of said cell body.
Therefore; Use the technical scheme of the utility model embodiment; The end that welds the position owing to the lug at pole piece is provided with breach; When carrying out lamination; Range upon range of positive plate, negative plate in the lamination tool from the bottom to top, and between positive plate and negative plate " Z " font barrier film at interval, make on the lug welding position of positive plate, negative plate breach just in time with the lamination tool on the first outstanding muscle, second outstanding muscle is just in time spacing interlocks: the first outstanding muscle, the second outstanding muscle are limited in respectively: the breach on the lug welding position of positive plate, negative plate, in.Thereby can stablize positive plate and negative plate in the lamination process, reduce about positive plate, negative plate, swing up and down displacement, increase the regularity of lamination body simultaneously, promote the cell high-capacity performance, make the lithium ion layer-built battery security performance that makes that higher guarantee arranged.
In addition; Adopt the present embodiment technical scheme to carry out spacing to positive plate and negative plate owing to can in the lamination process, settling at one go; And avoid being shifted; So can reduce some unnecessary inspection cost and prevention costs in the production, help on the basis that more helps stabilized product quality, reduce unnecessary production cost.
Description of drawings
Accompanying drawing described herein is used to provide the further understanding to the utility model, constitutes the application's a part, does not constitute the improper qualification to the utility model, in the accompanying drawings:
Fig. 1 is the positive plate structural representation in the lamination operation in the prior art;
Fig. 2 is the negative plate structural representation in the lamination operation in the prior art;
Fig. 3 is for using the lamination tool carries out lamination to the positive plate among Fig. 1,2, negative plate principle schematic in the lamination operation in the prior art;
Fig. 4 is the positive plate structural representation in the lamination operation that provides among the utility model embodiment 1;
Fig. 5 is the negative plate structural representation in the lamination operation that provides among the utility model embodiment 1;
A kind of lamination tool plan structure sketch map of Fig. 6 for providing among the utility model embodiment 1;
Fig. 7 carries out the principle schematic of lamination for utilizing lamination tool shown in Figure 6 among the utility model embodiment 1 to the pole piece of Fig. 5, structure shown in 6;
Fig. 8 is the positive plate structural representation in the lamination operation that provides among the utility model embodiment 2;
Fig. 9 is the negative plate structural representation in the lamination operation that provides among the utility model embodiment 2;
A kind of lamination tool plan structure sketch map of Figure 10 for providing among the utility model embodiment 2;
Figure 11 carries out the principle schematic of lamination for utilizing lamination tool shown in Figure 10 among the utility model embodiment 2 to the pole piece of Fig. 8, structure shown in 9.
Embodiment
To combine accompanying drawing and specific embodiment to specify the utility model below, be used for explaining the utility model in the illustrative examples and the explanation of this utility model, but not as the qualification to the utility model.
Embodiment 1:
Present embodiment provides a kind of lamination lithium ion battery to use pole piece, and this pole piece can be positive plate 401 or negative plate 501.
Referring to Fig. 4,5,6, shown in 7, the pole piece structure that present embodiment provides is mainly following: this positive plate 401 is made up of pole piece body 4011 and lug welding position 4012.
So present embodiment pole piece and prior art difference mainly are:
Referring to shown in Figure 4, on the lug welding position 4012 of the positive plate 401 of present embodiment, be provided with breach 4013 with pole piece body 4011 opposing ends.
Referring to shown in Figure 5, on the lug welding position 5012 of the negative plate 501 of present embodiment, be provided with breach 5013 with pole piece body 5011 opposing ends.
When carrying out lamination technology, can lamination tool 601 be arranged to shape shown in Figure 6:
This lamination tool 601 comprises cell body; The both sides of this cell body and first end are provided with upright cell wall 6011,6012,6013; And the inwall at first end 6013 is provided with the first outstanding muscle 602 and the second outstanding muscle 603; The first outstanding muscle 602 and the second outstanding muscle 603 extend perpendicularly to the bottom of cell body; The height of the first outstanding muscle 602 can also can be lower than cell body with height with cell body, specifically can confirm according to the lamination thickness of the laminated batteries of correspondence, the breach that guarantees to be layered in all positive plates 401 in the cell body, negative plate 501 all with cell body in first give prominence to muscle 602, second and give prominence to muscle 603 mutual spacing getting final product.
Referring to shown in Figure 7; When carrying out lamination; Range upon range of positive plate 401, negative plate 501 in the said lamination tool 601 from the bottom to top; And " Z " font interval barrier film between positive plate 401 and negative plate 501; Make on the lug welding position of positive plate 401 among Fig. 4,5, negative plate 501 breach 4013,5013 just in time with lamination tool 601 on the first outstanding muscle 602, second outstanding muscle 603 is just in time spacing interlocks: as illustrated in fig. 7, first outstanding muscle 602, the second outstanding muscle 603 is limited in respectively: in the breach 4013,5013 on the lug welding position of positive plate 401, negative plate 501.Thereby can stablize positive plate 401 and negative plate 501 in the lamination process; Reduce positive plate 401, negative plate about 501, swing up and down displacement; Increase the regularity of lamination body simultaneously, promote the cell high-capacity performance, make the lithium ion layer-built battery security performance that makes that higher guarantee arranged.
In addition; Adopt the present embodiment technical scheme to carry out spacing to positive plate 401 and negative plate 501 owing to can in the lamination process, settling at one go; And avoid being shifted; So can reduce some unnecessary inspection cost and prevention costs in the production, help on the basis that more helps stabilized product quality, reduce unnecessary production cost.
Need to prove; Breach 4013,5013 on the position of the lug of positive plate 401, negative plate 501 welding in the present embodiment can be like Fig. 4,5,6, rectangular interface shown in 7; But be not limited to this; Thinking from the utility model embodiment; Can this breach 4013,5013 be arranged to different shape, only need in the corresponding lamination tool 601 end of the first outstanding muscle 602, the second outstanding muscle 603 can be limited in this breach 4013,5013 and make positive plate 401, negative plate 501 is all limited and be positioned and place displacement and get final product.
In addition, in order further to be convenient to the operation of lamination, can also further plurality of through holes 604 be set in the present embodiment in the bottom of cell body.Like this in the lamination process; Electrode material granules of being scattered on air and positive plate 401 and the negative plate 501 or dust can be effectively fall from the bottom through-hole 604 of lamination tool 601, and avoid owing to air can't distribute the situation that inflatable influences lamination quality that produces.
Embodiment 2:
Referring to Fig. 8,9,10, shown in 11,1 difference of present embodiment and embodiment mainly is as follows:
Referring to Fig. 8, shown in 9, in the present embodiment, the breach 8013,9013 on the lug of positive plate 801, the negative plate 901 welding position is " V " font breach.
Referring to Figure 10, with " V " font breach 8013,9013 on the pole piece adaptably, the first outstanding muscle 1002 of the lamination tool 1001 of present embodiment, the end of the second outstanding muscle 1002 are outstanding " V " font.
Like this; Referring to shown in Figure 11; When carrying out lamination; The spacing positive plate of giving prominence on first outstanding muscle 1002, the second outstanding muscle 1,002 801 all in being layered in this lamination tool 1001 cell bodies of " V " font end, the lug of negative plate 901 weld in terminal " V " font breach in position, make all range upon range of positive plates 801, spacing well the fixing of negative plate 901 quilts, and avoid being shifted.
Described in the beneficial effect of present embodiment such as the embodiment 1.Spacing cooperation that should " V " font makes positive plate 801 in the lamination tool 1001 with negative plate 901 further complete matchings and be positioned.
Data Comparison Analysis:
In the present embodiment; Adopt the lamination tool in lamination tool of the prior art and the present embodiment respectively; Lamination environment identical carries out lamination; At identical test environment and use identical testing equipment to carry out battery performance parameter test to the lamination body, obtain following analysis of experimental data table respectively to what obtain:
Table one: short circuit ratio data contrast in the battery processing procedure
Table two: battery key property test
Table three: battery capacity test
More than technical scheme that the utility model embodiment is provided carried out detailed introduction; Used concrete example among this paper principle and the execution mode of the utility model embodiment are set forth, the explanation of above embodiment only is applicable to the principle that helps to understand the utility model embodiment; Simultaneously, for one of ordinary skill in the art, according to the utility model embodiment, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as the restriction to the utility model.
Claims (5)
1. a lamination lithium ion battery is used pole piece, it is characterized in that, comprising: pole piece body and lug welding position;
Said pole piece body is made up of: metal foil and the electrode material coating layer that is coated in said metal foil surface;
Said lug welding position is: extends and gives prominence to metal foil in said pole piece body one end,
On said lug welding position, be provided with breach with said pole piece body opposing ends.
2. lamination lithium ion battery according to claim 1 is used pole piece, it is characterized in that,
Said breach is " V " font.
3. a lithium ion battery lamination tool is characterized in that, comprises cell body, is provided with upright cell wall at the both sides and the first end of said cell body,
Inwall at the cell wall of said cell body first end is provided with the first outstanding muscle, the second outstanding muscle, and the said first outstanding muscle, the second outstanding muscle extend perpendicularly to the bottom of said cell body respectively,
When in said cell body, piling up have the right requirement 1 or 2 said positive plates, negative plate, the end of the said first outstanding muscle and the second outstanding muscle can be limited in respectively: in the breach of the lug welding position of said positive plate, negative plate.
4. a kind of lithium ion battery lamination tool according to claim 3 is characterized in that,
The end of the said first outstanding muscle and the second outstanding muscle is outstanding " V " font.
5. according to claim 3 or 4 described a kind of lithium ion battery lamination tools, it is characterized in that,
Bottom at said cell body also is provided with plurality of through holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203493924U CN202221795U (en) | 2011-09-16 | 2011-09-16 | Pole piece for laminated lithium-ion batteries and laminated fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203493924U CN202221795U (en) | 2011-09-16 | 2011-09-16 | Pole piece for laminated lithium-ion batteries and laminated fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202221795U true CN202221795U (en) | 2012-05-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203493924U Withdrawn - After Issue CN202221795U (en) | 2011-09-16 | 2011-09-16 | Pole piece for laminated lithium-ion batteries and laminated fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202221795U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324491A (en) * | 2011-09-16 | 2012-01-18 | 深圳市格瑞普电池有限公司 | Pole piece for laminated lithium ion battery and laminated fixture |
-
2011
- 2011-09-16 CN CN2011203493924U patent/CN202221795U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324491A (en) * | 2011-09-16 | 2012-01-18 | 深圳市格瑞普电池有限公司 | Pole piece for laminated lithium ion battery and laminated fixture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120516 Effective date of abandoning: 20130710 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20120516 Effective date of abandoning: 20130710 |
|
| RGAV | Abandon patent right to avoid regrant |