CN103682241A - Lithium ion battery provided with non-dust cloths - Google Patents
Lithium ion battery provided with non-dust cloths Download PDFInfo
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- CN103682241A CN103682241A CN201310695429.2A CN201310695429A CN103682241A CN 103682241 A CN103682241 A CN 103682241A CN 201310695429 A CN201310695429 A CN 201310695429A CN 103682241 A CN103682241 A CN 103682241A
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- lithium ion
- battery
- ion battery
- core body
- dust cloth
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to the field of lithium ion batteries, and discloses a lithium ion battery provided with non-dust cloths. The lithium ion battery provided with non-dust cloths comprises a casing, a battery cell body and an electrolyte, wherein the battery cell body and the electrolyte are packaged in the casing; an inner cavity of the casing is filled with the electrolyte which soaks the battery cell body and permeates into the battery cell body; and the battery cell body comprises diaphragms, positive plates, negative plates and the non-dust cloths, one diaphragm is spaced between any one positive plate and negative plate, and the non-dust cloths are located in the battery cell body. With the application of the technical scheme, improvement of the cycling performance of the lithium ion battery is facilitated.
Description
Technical field
The present invention relates to energy field, particularly a kind of lithium ion battery with non-dust cloth.
Background technology
Lithium ion battery is as a kind of new forms of energy, and the advantage such as be easy to carry because its environmental protection, reusable edible, volume are little is widely used in various electronic equipments and automobile, has become one of current most widely used energy.
Inventor finds in carrying out research process of the present invention, the defect below prior art exists:
Existing lithium battery is circulating after a period of time through multiplying power, and its inner electrolyte can reduce gradually, causes the cycle performance of lithium ion battery to decline.
Summary of the invention
One of object of the embodiment of the present invention is to provide a kind of lithium ion battery, applies the cycle performance that this technical scheme is conducive to improve lithium ion battery.
First aspect, a kind of lithium ion battery that the embodiment of the present invention provides, is characterized in that, comprising: housing, battery core body, electrolyte,
Described battery core body and electrolyte are encapsulated in described housing, and described electrolyte is full of described housing inner chamber, soak described battery core body and infiltrate described battery core body;
Described battery core body comprises: barrier film, positive plate, negative plate and non-dust cloth,
Each barrier film described in being separated with one between respectively between arbitrary positive plate, negative plate,
It is inner that described non-dust cloth is positioned at described battery core body.
In conjunction with first aspect, under the first implementation, described battery core body is duplexer, and described duplexer comprises negative plate described in stacked each, barrier film, positive plate, and described non-dust cloth is layered in any layer laminate of described duplexer.
In conjunction with first aspect, under the first implementation, the size of described non-dust cloth and the consistent size of described positive plate.
In conjunction with first aspect, under the first implementation, described non-dust cloth is at least two.
In conjunction with first aspect, under the first implementation, described battery core body is coiling body,
Described coiling body is reeled from inside to outside after stacked and is formed by positive plate described in barrier film, described in negative plate, described in one and at least one described non-dust cloth.
In conjunction with first aspect, under the first implementation, the width of described non-dust cloth is consistent with the width of described coiling body, and length is consistent with the width of described positive plate.
In conjunction with first aspect, under the first implementation, described non-dust cloth is at least two.
In conjunction with first aspect, under the first implementation, also comprise capsule,
In described capsule, be packaged with electrolyte,
Described capsule is fixed in described housing, is positioned at described battery core external.
In conjunction with first aspect, under the first implementation,
Described capsule is fixed on the angle position in described housing.
In conjunction with first aspect, under the first implementation, described capsule is at least two.
Therefore application the present embodiment technical scheme, during note electrolyte, make electrolyte soak battery core body, electrolyte infiltrates in battery core body, is absorbed, thereby can improve the electrolyte content in limited housing by non-dust cloth, it can improve capacity and the cycle performance of battery with respect to prior art, particularly, in the application process of battery, when its inner electrolyte reduces, the electrolyte that non-dust cloth absorbs can be released and supplement the electrolyte being depleted, and is conducive to improve the cycle performance of battery.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, does not form inappropriate limitation of the present invention, in the accompanying drawings:
The lithium ion battery structure schematic diagram that Fig. 1 provides for the embodiment of the present invention 1;
Fig. 2 contrasts schematic diagram for the liquid vector providing in contrast test 1 in the embodiment of the present invention 1 distributes;
The curve synoptic diagram that Fig. 3,4,5 decays in time for the sample 5 that provides in contrast test 1 in the embodiment of the present invention 1, sample 6, sample 11, sample 12, sample 25, sample 26 capacity when the loop test;
Fig. 6 is that the battery capacity that obtains as signal of the sample in contrast test 11 in the embodiment of the present invention 1, sample 2, sample 3 is with the variation schematic diagram of cycle-index;
Fig. 7 is that the battery capacity that obtains as signal of the sample in contrast test 3 11 in the embodiment of the present invention 1, sample 12, sample 13 is with the variation schematic diagram of cycle-index.
Reference numeral:
101: battery core body; 102: capsule; 103: housing.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, describe the present invention in detail, in this illustrative examples of the present invention and explanation, be used for explaining the present invention, but not as a limitation of the invention.
Embodiment 1:
Shown in Figure 1, the present embodiment provides a kind of lithium ion battery, and it mainly comprises: housing, battery core body, electrolyte.Wherein, battery core body and electrolyte are encapsulated in housing, and electrolyte is full of the whole inner chamber of housing, soak whole battery core body, and infiltrate battery core body.The battery core body of the present embodiment comprises: barrier film, positive plate, negative plate and dustless layer of cloth, between arbitrary positive plate, negative plate, be separated with a barrier film between respectively, and dustless layer of cloth is positioned at the optional position of battery core body inside.
In the preparation, according to the type of battery core body, non-dust cloth is arranged in battery core body, then battery core body is inserted to the inside of housing, encapsulating housing, note electrolyte, changes into, and partial volume obtains the battery of the present embodiment.
In the present embodiment, during note electrolyte, make electrolyte soak battery core body, electrolyte infiltrates in battery core body, by non-dust cloth, absorbed, thereby can improve the electrolyte content in limited housing, it can improve capacity and the cycle performance of battery with respect to prior art, particularly, in the application process of battery, when its inner electrolyte reduces, the electrolyte that non-dust cloth absorbs can be released and supplement the electrolyte being depleted, and is conducive to improve the cycle performance of battery.
Signal as the present embodiment, when the present embodiment is applied to laminated lithium ion battery, battery core body is wherein by multi-disc negative plate, barrier film, the stacked duplexer forming of positive plate, when stacked, the non-dust cloth cutting out is in advance layered in to arbitrary layer of duplexer or in multilayer, can obtains the stacked battery core body with non-dust cloth arbitrarily.
As the signal of the present embodiment, in order further to improve the flat appearance consistency of this stacked battery core body, the size of non-dust cloth can be cut in the present embodiment and the consistent size of positive plate or approximate, when lamination operation, join in duplexer.Wherein the sheet number of non-dust cloth and the stacked number of plies and stacked position can be determined arbitrarily or according to designing requirement.
Signal as the present embodiment, when the present embodiment is applied to wound lithium-ion battery, battery core body be wherein by the negative plate of a strip, the barrier film of a strip, the positive plate of a strip and the non-dust cloth of at least one strip stacked after, by volume pin, reel from inside to outside and obtain reeling battery core body.
Signal as the present embodiment, in order further to improve the flat appearance consistency of this stacked battery core body, the size of non-dust cloth can be cut in the present embodiment: the width that makes non-dust cloth is consistent or approximate with the width (being the width of coiling body) of corresponding volume pin, makes the length of non-dust cloth and the length of positive plate consistent.Wherein the sheet number of non-dust cloth with and position can be arbitrarily or determine according to designing requirement.
test data analyzer:
In order to further illustrate the effect of the present embodiment, below by analysis of experiments, the effect of the present embodiment is carried out to suitable explanation.
contrast test 1: the mistake liquid rate and the cycle performance analysis of experiments that are applied to winding battery
AP5034076-11A-1300mAh batch of each Battery pack obtaining according to identical preparation technology and identical test technique of usining distributes and contrasts schematic diagram as liquid vector corresponding to test piece.The dimensions of above-mentioned test piece is 50*34*076, and discharge-rate is 1C, and capacity is 1300mAh.
At battery, change into and bleed after secondary encapsulation, to respectively four sampling test samples being tested, electrolyte in lithium ion battery is measured, and compared with reservoir quantity before, using the difference of comparison and reservoir quantity ratio as the liquid loss amount of the present embodiment.Obtain the electrolyte loss rate comparison schematic diagram shown in Fig. 2.In the drawings:
201 have illustrated to be provided with one deck in volume core grows together with volume core with liquid vector schematic diagram corresponding to the test piece of wide non-dust cloth with positive plate;
202 illustrated volume be provided with in core two-layer and positive plate with long and volume core with liquid vector schematic diagram corresponding to the test piece of wide non-dust cloth;
203 have illustrated not arrange the liquid vector schematic diagram corresponding to test piece of non-dust cloth in volume core;
204 have illustrated to arrange in volume core three layers grows together with volume core with liquid vector schematic diagram corresponding to the test piece of wide corrosion-resistant water-absorbing sponge sheet with positive plate.
Fig. 3 has added sample 5, sample 6 curve synoptic diagram that capacity is decayed in time when loop test in the test piece of a slice non-dust cloth for this test is a kind of, wherein curve 5,6 counter samples 5,6 respectively.
Fig. 4 has added sample 11, sample 12 curve synoptic diagram that capacity is decayed in time when loop test of two non-dust cloths for this test is a kind of, wherein curve 11,12 difference counter samples 11,12.
Fig. 5 does not add non-dust cloth sample 25, sample 26 curve synoptic diagram that capacity is decayed in time when loop test for this test is a kind of, wherein curve 25,26 difference counter samples 25,26.
Referring to Fig. 2,3,4,5 and table one visible, in the lithium ion battery of low range, application the present embodiment technical scheme can reduce the liquid loss amount of battery in the cyclic process of preparation greatly, is conducive to improve the cycle performance of battery in preparation process.
contrast test 2: the mistake liquid rate analysis of experiments that is applied to laminated batteries
AP7849135-U2A4400mAh batch of each Battery pack obtaining according to identical preparation technology and identical test technique of usining carries out the analysis of liquid vector as test piece.The dimensions of above-mentioned test piece is 78*49*135, and discharge-rate is 30C, and capacity is 4400mAh.
The preparation information of this batch of battery is as follows: anodal one side surface density 90-93g/m2; Two-sided surface density 181.7-184g/m2(16:00-21:00 in 3 days June production time), negative pole one side surface density 42.44g/m2,29 ℃ of two-sided surface density 83.86g/m2(temperature, humidity 22.8%, June 3 production time 9:30-11:30), June 4 lamination production time 8:00-15:30,25.1 ℃ of lamination workshop temperature, humidity 43.9%, dew point 12.4%.Encapsulation 9:30 on June 6 production time.
With test one in like manner, at battery, change into and bleed after secondary encapsulation, to respectively 10 sampling test samples being tested, the electrolyte in lithium ion battery is measured, obtain liquid loss amount.Wherein,
Sequence number 1-10 is not for adding the laminated lithium ion battery of non-dust cloth;
Sequence number 11-20 is the laminated lithium ion battery sample that adds 2 layers of non-dust cloth;
Sequence number 21-30 is the laminated lithium ion battery sample that adds 3 layers of corrosion-resistant water-absorbing sponge sheet.
Table one: the comparing table that the liquid loss amount of test two test pieces carries out
contrast test 3: rate capability comparison
The check battery sample of below testing in 2 is compared carrying out rate capability test with identical test technique.Obtain the form shown in table two:
Table two: rate capability deck watch
contrasttest 4: cycle performance comparison
With the sample of testing in 2, carry out cycle performance test comparison, obtain the cycle performance shown in Fig. 6,7 and change schematic diagram, wherein Fig. 6 is the cycle performance curve chart that does not add the battery of non-dust cloth, the sample 5,6 of the corresponding the type battery of curve 5,6 difference in figure; Wherein Fig. 6 is the cycle performance curve chart that adds the battery of a slice non-dust cloth, the sample 11,12 of the corresponding the type battery of curve 11,12 difference in figure.
Referring to Fig. 6,7 and table two visible, the present embodiment technical scheme is applied in powerful high capacity lithium ion battery, can greatly reduce battery preparation cyclic process in liquid loss amount, be conducive to improve the cycle performance of battery in preparation process.
As the signal of the present embodiment, can also be further in the housing of the battery core body of the battery of this enforcement, be fixedly installed capsule, and be packaged with electrolyte in capsule.Like this, when user is by after the battery applications certain hour of the present embodiment, when the capacity attenuation of battery, user can rack solution capsule by pressing the mode of battery core surface, thereby the electrolyte in capsule is added in battery core body, participate in cell reaction, be conducive to the recovery of the capacity of lithium ion battery, be conducive to improve the cycle performance of battery.
Signal as the present embodiment, can be, but not limited to, at the rotation angle position of the housing of battery core body, above-mentioned capsule is set, the quantity of this capsule can be one, two, three or four or more, specifically can be according to actual needs and the size setting of battery.
The technical scheme above embodiment of the present invention being provided is described in detail, applied specific case herein the principle of the embodiment of the present invention and execution mode are set forth, the explanation of above embodiment is only applicable to help to understand the principle of the embodiment of the present invention; , for one of ordinary skill in the art, according to the embodiment of the present invention, in embodiment and range of application, all will change, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (10)
1. a lithium ion battery, is characterized in that, comprising: housing, battery core body, electrolyte,
Described battery core body and electrolyte are encapsulated in described housing, and described electrolyte is full of described housing inner chamber, soak described battery core body and infiltrate described battery core body;
Described battery core body comprises: barrier film, positive plate, negative plate and non-dust cloth,
Each barrier film described in being separated with one between respectively between arbitrary positive plate, negative plate,
It is inner that described non-dust cloth is positioned at described battery core body.
2. according to the lithium ion battery described in power 1, it is characterized in that,
Described battery core body is duplexer, and described duplexer comprises negative plate described in stacked each, barrier film, positive plate, and described non-dust cloth is layered in any layer laminate of described duplexer.
3. according to the lithium ion battery described in power 2, it is characterized in that,
The size of described non-dust cloth and the consistent size of described positive plate.
4. according to the lithium ion battery described in power 2, it is characterized in that,
Described non-dust cloth is at least two.
5. according to the lithium ion battery described in power 1, it is characterized in that,
Described battery core body is coiling body,
Described coiling body is reeled from inside to outside after stacked and is formed by positive plate described in barrier film, described in negative plate, described in one and at least one described non-dust cloth.
6. according to the lithium ion battery described in power 5, it is characterized in that,
The width of described non-dust cloth is consistent with the width of described coiling body, and length is consistent with the width of described positive plate.
7. according to the lithium ion battery described in power 5, it is characterized in that,
Described non-dust cloth is at least two.
8. according to the lithium ion battery described in power 1, it is characterized in that, also comprise capsule,
In described capsule, be packaged with electrolyte,
Described capsule is fixed in described housing, is positioned at described battery core external.
9. according to the lithium ion battery described in power 8, it is characterized in that,
Described capsule is fixed on the angle position in described housing.
10. according to the lithium ion battery described in power 8 or 9, it is characterized in that,
Described capsule is at least two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310695429.2A CN103682241A (en) | 2013-12-17 | 2013-12-17 | Lithium ion battery provided with non-dust cloths |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310695429.2A CN103682241A (en) | 2013-12-17 | 2013-12-17 | Lithium ion battery provided with non-dust cloths |
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| CN103682241A true CN103682241A (en) | 2014-03-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103811711A (en) * | 2014-02-27 | 2014-05-21 | 深圳市格瑞普电池有限公司 | Lithium ion battery with capsule |
| WO2015089749A1 (en) * | 2013-12-17 | 2015-06-25 | 深圳市格瑞普电池有限公司 | Lithium-ion battery provided with non-dust cloth |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101350428A (en) * | 2008-08-26 | 2009-01-21 | 深圳市海盈科技有限公司 | Lithium ion battery and method for assembling the same |
| WO2013069622A1 (en) * | 2011-11-10 | 2013-05-16 | 三菱自動車工業株式会社 | Secondary cell |
| CN203631658U (en) * | 2013-12-17 | 2014-06-04 | 深圳市格瑞普电池有限公司 | Lithium ion battery with dustless cloth |
-
2013
- 2013-12-17 CN CN201310695429.2A patent/CN103682241A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101350428A (en) * | 2008-08-26 | 2009-01-21 | 深圳市海盈科技有限公司 | Lithium ion battery and method for assembling the same |
| WO2013069622A1 (en) * | 2011-11-10 | 2013-05-16 | 三菱自動車工業株式会社 | Secondary cell |
| CN203631658U (en) * | 2013-12-17 | 2014-06-04 | 深圳市格瑞普电池有限公司 | Lithium ion battery with dustless cloth |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015089749A1 (en) * | 2013-12-17 | 2015-06-25 | 深圳市格瑞普电池有限公司 | Lithium-ion battery provided with non-dust cloth |
| CN103811711A (en) * | 2014-02-27 | 2014-05-21 | 深圳市格瑞普电池有限公司 | Lithium ion battery with capsule |
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Application publication date: 20140326 |