CN201956428U - Lithium ion battery - Google Patents
Lithium ion battery Download PDFInfo
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- CN201956428U CN201956428U CN2011200007464U CN201120000746U CN201956428U CN 201956428 U CN201956428 U CN 201956428U CN 2011200007464 U CN2011200007464 U CN 2011200007464U CN 201120000746 U CN201120000746 U CN 201120000746U CN 201956428 U CN201956428 U CN 201956428U
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- barrier film
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- positive plate
- battery
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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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Abstract
The utility model discloses a lithium ion battery which comprises a battery core, a casing and electrolyte. The battery core comprises a first positive pole piece, a first diaphragm and a first negative pole piece which are overlapped in sequence and then folded repeatedly to form a continuous lamination. The lamination of the battery core is formed by repeatedly folding, therefore, the probability of micro short caused by burs at edges of lamination cut sheets is reduced, and the safety performance of the battery is improved; and moreover, as the processes of die cutting and the repeated adding of a plurality of small chips are canceled, the lamination efficiency is greatly improved, and the production cost is greatly reduced.
Description
Technical field
The utility model relates to field of batteries, particularly a kind of lithium ion battery.
Background technology
Along with the continuous development of science and technology, the performance of mobile devices such as mobile phone, camera, Notebook Battery is also in that earth-shaking variation takes place, and is also more and more higher to the requirement of lithium ion battery simultaneously.Such as, the function of these equipment becomes increasingly complex, and the big multiplying power discharging property of battery is also had higher requirement.Recently, because people's environmental consciousness improves constantly, also more and more advocate the environmental-protecting performance of product.Electric automobile has free of contamination characteristic, thereby the trend of its alternative orthodox car is also more and more obvious, but the development of battery car itself depends on the development that power source is a battery to a great extent.Therefore, the development of batteries of electric automobile is most important.A requirement is below all arranged, and the multiplying power discharging property that is exactly battery must be fine.Make at present high rate performance preferably lithium ion battery be method by lamination, promptly, earlier positive and negative plate is die-cut into some small pieces according to the battery size of made, a slice a slice gathers into folds repeatedly again.This kind method complex process, equipment cost and cost of manufacture are all very high.And each small pieces all has four side cuts, is easy to generate burr, and battery causes an important potential safety hazard of this type of battery because of the micro-short circuit probability that the side cut burr causes increases substantially.
Summary of the invention
Technical problem to be solved in the utility model is exactly in order to overcome above deficiency, to have proposed a kind of stack type lithium ion battery and preparation method thereof, the micro-short circuit of avoiding battery to cause because of the side cut burr.
Technical problem of the present utility model is solved by following technical scheme:
A kind of lithium ion battery comprises battery, shell, electrolyte; Battery comprises first positive plate, first barrier film and first negative plate; The one side of first positive plate is coated with anodal material, and the one side of first negative plate is coated with the negative pole material; First positive plate, first barrier film and first negative plate superpose afterwards folding successively and form continuous lamination.
In one embodiment, the battery of lithium ion battery also comprises second positive plate and second barrier film, the one side of second positive plate is coated with anodal material, the another side of first negative plate also is coated with the negative pole material, and second barrier film, second positive plate and first positive plate, first barrier film and first negative plate superpose afterwards folding successively and form continuous lamination.
In one embodiment, the battery of lithium ion battery also comprises second negative plate and second barrier film, the one side of second negative plate is coated with the negative pole material, the another side of first positive plate also is coated with anodal material, and second barrier film, second negative plate and first negative plate, first barrier film and first positive plate superpose afterwards folding successively and form continuous lamination.
In one embodiment, the battery of lithium ion battery also comprises second negative plate and the 3rd barrier film, the another side of second positive plate also is coated with anodal material, and the 3rd barrier film, second negative plate and first positive plate, first barrier film, first negative plate, second barrier film, second positive plate superpose afterwards folding successively and form continuous lamination.
In one embodiment, the battery of lithium ion battery also comprises second positive plate and the 3rd barrier film, the another side of second negative plate also is coated with the negative pole material, and the 3rd barrier film, second positive plate and first negative plate, first barrier film, first positive plate, second barrier film, second negative plate superpose afterwards folding successively and form continuous lamination.
In one embodiment, anode ear is arranged on the positive plate, negative electrode lug is arranged on the negative plate.
In one embodiment, first positive plate, first barrier film and first negative plate are folding according to the Z type.
In one embodiment, first positive plate, first barrier film and first negative plate are folding according to the S type.
The beneficial effect of the utility model and the contrast of traditional laminated batteries is: continuous laminated batteries of the present utility model is not a lot of cuts edge, and reduces the micro-short circuit probability that the slicing edge burr causes, and has improved battery safety.Saved the different punching cutting die that the battery of different size size need be equipped with, the machine of lamination is also greatly simplified, and greatly reduces equipment cost.The utility model does not need to shift to an earlier date die-cut some small pieces, does not need during lamination to fold after the interpolation of a slice a slice yet again, and only folding the getting final product of need, so lamination efficient improves a lot, and production cost also decreases.
The utility model and conventional roll contrast further beneficial effect around battery: continuous laminated batteries of the present utility model, there is not the unmatched problem of inside and outside tension force, and can not roll up the core distortion and cause the bigger than normal and performance reduction of battery size.
Description of drawings
Fig. 1 is the utility model embodiment 1 battery internal element structural representation;
Fig. 2 is the utility model embodiment 2 battery internal element structural representations;
Fig. 3 is the utility model embodiment 3 battery internal element structural representations;
Fig. 4 is the utility model embodiment 4 battery internal element structural representations.
Embodiment
Also in conjunction with the accompanying drawings the utility model is described in further details below by concrete execution mode.
As shown in Figure 1, a kind of lithium ion battery comprises battery, shell, electrolyte; Battery comprises first positive plate 1, first barrier film 2 and first negative plate 3; The one side of first positive plate 1 is coated with anodal material, and the one side of first negative plate is coated with the negative pole material; First positive plate 1, first barrier film 2 and first negative plate 3 superpose afterwards folding successively and form continuous lamination; First positive plate 1, first barrier film 2 and first negative plate 3 can be folding according to the Z type.
The manufacture method of present embodiment is as follows: positive pole material 12 is coated in the one side of anodal foil 11, and metal tape in the welding is made first positive plate 1.Negative pole material 32 is coated in the one side of negative pole foil 31, and metal tape in the welding is made first negative plate 3.It is folding to carry out the Z type after by the lamination machine first positive plate 1, first barrier film 2, first negative plate 3 being superposeed successively, makes continuous stacked battery core.Make flow process by normal lithium ion battery again and add shell, inject electrolyte, operation such as change into and to be made into continuous stack type lithium ion battery.
As shown in Figure 2, the difference of present embodiment and embodiment 1 is that battery also comprises second positive plate 5 and second barrier film 4.The one side of second positive plate 5 is coated with anodal material, and the another side of first negative plate also is coated with the negative pole material.Second barrier film 4, second positive plate 5 and first positive plate 1, first barrier film 2 and first negative plate 3 superpose afterwards folding successively and form continuous lamination.
The manufacture method of present embodiment is as follows: positive pole material 12 is coated in the one side of anodal foil 11, reserves the empty paper tinsel in lug position on the foil, by the method for laser cutting, form first positive plate 1 of multipole ear.Positive pole material 52 is coated in the one side of anodal foil 51, reserves the empty paper tinsel in lug position on the foil,, form second positive plate 5 of multipole ear by the method for laser cutting.The negative pole material is coated in the two-sided of negative pole foil, reserves the empty paper tinsel in lug position on the foil,, form first negative plate 3 of multipole ear by the method for laser cutting.It is folding to carry out the Z type after by the lamination machine first positive plate 1, first barrier film 2, first negative plate 3, second barrier film 4, second positive plate 5 being superposeed successively, welds the multilayer lug of positive/negative plate then respectively, and metal tape in the welding is made battery.Make flow process by normal lithium ion battery again and add shell, inject electrolyte, operation such as change into and to be made into continuous both positive and negative polarity multi-layer stacks formula lithium ion battery.
As shown in Figure 3, the difference of present embodiment and embodiment 1 is that battery also comprises second negative plate 5 ' and second barrier film 4.The one side of second negative plate 5 ' is coated with the negative pole material, and the another side of first positive plate 1 also is coated with anodal material.Second negative plate 5 ', second barrier film 4 and first negative plate 3, first barrier film 2 and first positive plate 1 superpose afterwards folding successively and form continuous lamination.
The manufacture method of present embodiment is as follows: negative pole material 32 is coated in the one side of negative pole foil 31, reserves the empty paper tinsel in lug position on the foil, by the method for laser cutting, form first negative plate 3 of multipole ear.Negative pole material 52 ' is coated in the one side of negative pole foil 51, reserves the empty paper tinsel in lug position on the foil,, form second negative plate 5 ' of multipole ear by the method for laser cutting.Positive pole material 12 is coated in the two-sided of anodal foil 11, reserves the empty paper tinsel in lug position on the foil,, form first positive plate 1 of multipole ear by the method for laser cutting.It is folding to carry out the Z type after by the lamination machine first negative plate 3, first barrier film 2, first positive plate 1, second barrier film 4, second negative plate 5 ' being superposeed successively, welds the multilayer lug of positive/negative plate then respectively, and metal tape in the welding is made battery.Make flow process by normal lithium ion battery again and add shell, inject electrolyte, operation such as change into and to be made into continuous both positive and negative polarity multi-layer stacks formula lithium ion battery.
As shown in Figure 4, the difference of present embodiment and embodiment 3 is that battery also comprises second positive plate 7 and the 3rd barrier film 6.The another side of second negative plate 5 ' also is coated with the negative pole material.Second positive plate 7, the 3rd barrier film 6 and second negative plate 5 ', second barrier film 4, first positive plate 1, first barrier film 2, first negative plate 3, the stack back is folding and form continuous lamination successively.
The manufacture method of present embodiment is as follows: negative pole material 32 is coated in the one side of negative pole foil 31, reserves the empty paper tinsel in lug position on the foil, by the method for laser cutting, form first negative plate 3 of multipole ear.Positive pole material 12 is coated in the two-sided of anodal foil 11, reserves the empty paper tinsel in lug position on the foil,, form first positive plate 1 of multipole ear by the method for laser cutting.Negative pole material 52 ' is coated in the two-sided of negative pole foil 51, reserves the empty paper tinsel in lug position on the foil,, form second negative plate 5 ' of multipole ear by the method for laser cutting.Positive pole material 72 is coated in the one side of anodal foil 71, reserves the empty paper tinsel in lug position on the foil,, form second positive plate 7 of multipole ear by the method for laser cutting.It is folding to carry out the Z type after by the lamination machine first negative plate 3, first barrier film 2, first positive plate 1, second barrier film 4, second negative plate 5 ', the 3rd barrier film 6, second positive plate 7 being superposeed successively, weld the multilayer lug of positive/negative plate then respectively, metal tape in the welding is made battery.Make flow process by normal lithium ion battery again and add shell, inject electrolyte, operation such as change into and to be made into continuous both positive and negative polarity multi-layer stacks formula lithium ion battery.
The lithium ion battery of present patent application comprises battery, shell, electrolyte; Battery comprises positive plate, the barrier film of single face dressing, the negative plate of single face dressing, carry out successively folding, again through normal lithium ion battery make flow process add shell, inject electrolyte, change into etc. operation promptly can be made into universality can continuous stack type lithium ion battery.Increase the positive plate of two-sided dressing, the negative plate of two-sided dressing, elementary cell combination according to positive plate-barrier film-negative plate, carry out folding successively, then can make powerful continuous multilayer stack type lithium ion battery, and can on each pole piece, draw one or more lugs according to performance need.The continuous both positive and negative polarity lamination of folding formation can be the Z type, also can be the S type.
According to the battery of different performance needs, can draw one or more lugs on each pole piece, the lug outbound course has two kinds: the one, by the weld metal band; The 2nd, form by methods such as laser cutting on pole piece or roll extrusion are die-cut, more than two kinds of methods also can use simultaneously.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.Such as, on the basis of the foregoing description, increase positive plate and (or) negative plate, according to the elementary cell combination of positive plate-barrier film-negative plate, carry out foldingly successively, then can make powerful continuous multilayer stack type lithium ion battery.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection range of the present utility model.
Claims (8)
1. lithium ion battery, comprise battery, shell, electrolyte, it is characterized in that: described battery comprises first positive plate, first barrier film and first negative plate, and described first positive plate, first barrier film and first negative plate superpose afterwards folding successively and form continuous lamination.
2. lithium ion battery according to claim 1 is characterized in that: the one side of described first positive plate is coated with anodal material, and the one side of first negative plate is coated with the negative pole material.
3. lithium ion battery according to claim 2, it is characterized in that: described battery also comprises second positive plate and second barrier film, the one side of described second positive plate is coated with anodal material, the another side of described first negative plate also is coated with the negative pole material, and described second barrier film, second positive plate and described first positive plate, first barrier film and first negative plate superpose afterwards folding successively and form continuous lamination.
4. lithium ion battery according to claim 2, it is characterized in that: described battery also comprises second negative plate and second barrier film, the one side of described second negative plate is coated with the negative pole material, the another side of described first positive plate also is coated with anodal material, and described second barrier film, second negative plate and described first negative plate, first barrier film and first positive plate superpose afterwards folding successively and form continuous lamination.
5. lithium ion battery according to claim 3, it is characterized in that: described battery also comprises second negative plate and the 3rd barrier film, the another side of described second positive plate also is coated with anodal material, and described the 3rd barrier film, second negative plate and described first positive plate, first barrier film, first negative plate, second barrier film, second positive plate superpose afterwards folding successively and form continuous lamination.
6. lithium ion battery according to claim 4, it is characterized in that: described battery also comprises second positive plate and the 3rd barrier film, the another side of described second negative plate also is coated with the negative pole material, and described the 3rd barrier film, second positive plate and described first negative plate, first barrier film, first positive plate, second barrier film, second negative plate superpose afterwards folding successively and form continuous lamination.
7. according to the arbitrary described lithium ion battery of claim 1-6, it is characterized in that: on the described positive plate anode ear is arranged, on the described negative plate negative electrode lug is arranged.
8. according to the arbitrary described lithium ion battery of claim 1-6, it is characterized in that: described first positive plate, first barrier film and first negative plate are folding according to the Z type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200007464U CN201956428U (en) | 2011-01-04 | 2011-01-04 | Lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200007464U CN201956428U (en) | 2011-01-04 | 2011-01-04 | Lithium ion battery |
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| CN201956428U true CN201956428U (en) | 2011-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200007464U Expired - Lifetime CN201956428U (en) | 2011-01-04 | 2011-01-04 | Lithium ion battery |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102110854A (en) * | 2011-01-04 | 2011-06-29 | 深圳市量能科技有限公司 | Lithium ion battery and manufacturing method thereof |
| CN102751539A (en) * | 2012-07-10 | 2012-10-24 | 上海索锂科技有限公司 | Method for preparing battery cell of high-capacity lithium ion battery for automobile |
| CN103746144A (en) * | 2014-01-20 | 2014-04-23 | 深圳市吉阳自动化科技有限公司 | Coiled laminated battery cell and battery |
| CN108878984A (en) * | 2018-06-26 | 2018-11-23 | 合肥国轩高科动力能源有限公司 | A kind of compound Z-shaped lamination device of lithium battery heat and laminating method |
-
2011
- 2011-01-04 CN CN2011200007464U patent/CN201956428U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102110854A (en) * | 2011-01-04 | 2011-06-29 | 深圳市量能科技有限公司 | Lithium ion battery and manufacturing method thereof |
| CN102751539A (en) * | 2012-07-10 | 2012-10-24 | 上海索锂科技有限公司 | Method for preparing battery cell of high-capacity lithium ion battery for automobile |
| CN103746144A (en) * | 2014-01-20 | 2014-04-23 | 深圳市吉阳自动化科技有限公司 | Coiled laminated battery cell and battery |
| CN108878984A (en) * | 2018-06-26 | 2018-11-23 | 合肥国轩高科动力能源有限公司 | A kind of compound Z-shaped lamination device of lithium battery heat and laminating method |
| CN108878984B (en) * | 2018-06-26 | 2020-04-17 | 合肥国轩高科动力能源有限公司 | Lithium battery thermal composite Z-shaped lamination device and lamination method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110831 |