CN1599119A - Liquid lithium ion cell allowing high carrent charging-discharging - Google Patents
Liquid lithium ion cell allowing high carrent charging-discharging Download PDFInfo
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- CN1599119A CN1599119A CNA2004100513600A CN200410051360A CN1599119A CN 1599119 A CN1599119 A CN 1599119A CN A2004100513600 A CNA2004100513600 A CN A2004100513600A CN 200410051360 A CN200410051360 A CN 200410051360A CN 1599119 A CN1599119 A CN 1599119A
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- negative plate
- discharge
- liquid lithium
- high current
- current charge
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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
Abstract
The invention relates to a liquid lithium ion cell which permits recharging and discharging in heavy current. The anode plate (2) and the cathode plate (1) are separated by the clapboard (3) and form an integer and ends with the ending adhesive tape (4). Especially, between 2 and 5 anode aurises (5) distribute along the length L of the anode plate (2). Between 2 and 5 cathode aurises (6) distribute along the length L of the cathode plate (1). The abovementioned anode/cathode aurises (5/6) connect with their respective nut caps (7/8) and the thickness delta of the anode/cathode plates (2/1) is between 70mum and 150mum. Compared with today's technology, the advantages of the invention and the cell lie in the following aspects: by adopting the multi aurises structure on the electrodes of the cell and reducing the thickness of the electrodes greatly, the cell can be recharged and discharged in heavy current and can be widely used in the electric tools.
Description
The conduction that technical field the present invention relates to secondary cell connects and the electrode manufacturing, relate in particular to lithium ion battery just/negative plate THICKNESS CONTROL and pole piece on lug quantity and distribution mode thereof.
Background technology is along with portable high-performance electric tool and intelligent toy is universal day by day, owing to the requirement of portable dam to weight and continuous working period improves day by day, the lithium ion battery that possesses high-energy-density and high working voltage just has stronger competitiveness simultaneously.But the prior art lithium ion battery just/negative plate is general only with single lug projected current, and pole piece thickness δ is often much in 150 μ m and less than 300 μ m.Because nonaqueous electrolyte is than the restriction of low conductivity, its high rate charge-discharge performance is not good, majority can only be so that (C is the rated capacity of battery less than 3C, as C=800mAh, it promptly is that discharging current is taken as 2.4A that 3C leads discharge) electric current continuous operation discharge, spark with electric current, can't satisfy the continuous operation discharge of application needs 7C to 10C such as electric tool, the transient large current discharge requirement of 20C less than 10C.Therefore, field of power tools is captured by big reasonable Ni-MH of multiplying power discharging property (ni-mh) and Ni-Cd (NI-G) battery always, and the battery of other kinds is difficult to enter this field.
The summary of the invention the technical problem to be solved in the present invention is to avoid above-mentioned the deficiencies in the prior art part and proposes a kind of liquid lithium ionic cell manufacture method and battery structure that allows high current charge-discharge, can significantly improve described battery high rate charge-discharge performance, adopt the lithium ion battery of non-aqueous solution electrolysis plastidome electrolyte also can be applied to field of power tools thereby allow.
The present invention solve the technical problem the technical scheme that adopts to be, proposes a kind of liquid lithium ionic cell manufacture method that allows high current charge-discharge, comprises the steps:
A. by just/the lug number that increase to connect respectively on the negative plate, making it respectively is 2 to 5, just is being connected to/bear block then respectively, to reduce the electric current that each single lug flows through, the charging and discharging currents of raising battery permission;
B. by just reducing/negative plate on the active material coating thickness, be (70～150) μ m to control described each pole piece gross thickness δ, thus the internal resistance of cell during the reduction high current charge-discharge;
C. just described/negative plate is respectively with after separately lug is connected, and is separated by and, is wound into one and forms electric core up and down behind the align center around the volume pin by barrier film, stops by stopping adhesive tape.
The present invention solve the technical problem the technical scheme that adopts also further to comprise, designs and produces a kind of liquid lithium ionic cell that allows high current charge-discharge, and being separated by by barrier film based on positive plate and negative plate is wound as one, stops by stopping adhesive tape.Especially, having 2 to 5 anode ears evenly to distribute is connected on the length of run L of positive plate, also have 2 to 5 negative electrode lugs evenly to distribute and be connected on the length of run L of negative plate, and just described/negative electrode lug is connected with separately block, and just described/negative plate thickness δ is (70～150) μ m.
Compare with prior art, the advantage of the inventive method and battery is: by adopting multipole ear structure and significantly reduce positive/negative plate thickness on each pole piece of battery, thereby can allow described battery with high current charge-discharge, make it to be widely used in fields such as electric tool.
Description of drawings Fig. 1 is that the present invention allows the master of the liquid lithium ionic cell electricity core of high current charge-discharge to look schematic diagram;
Fig. 2 is the upward view of Fig. 1 battery battery core;
Fig. 3 is the vertical view of Fig. 1 battery battery core;
Fig. 4 is the schematic diagram that each lug of lithium ion battery of the present invention connects with block;
Fig. 5 is that each negative electrode lug of lithium ion battery of the present invention connects and is distributed in schematic diagram on the negative plate;
Fig. 6 is that each anode ear of described battery connects and is distributed in schematic diagram on the positive plate;
Fig. 7 is the voltage-time curve family of lithium ion battery of the present invention under the different multiplying discharge scenario.
Embodiment is described in further detail below in conjunction with the most preferred embodiment shown in each accompanying drawing: a kind of liquid lithium ionic cell manufacture method that allows high current charge-discharge that the present invention proposes referring to Fig. 1 to Fig. 6, comprises the steps:
A. by just/the lug number that increase to connect respectively on the negative plate, making it respectively is 2 to 5, just is being connected to/bear block then respectively, to reduce the electric current that single lug flows through, the charging and discharging currents of raising battery permission;
B. by just reducing/negative plate on the active material thickness of lithium be (70～150) μ m to control described each pole piece gross thickness δ, thereby the internal resistance of cell during the reduction high current charge-discharge;
C. just described/negative plate is respectively with after separately lug is connected, and is separated by and, is wound into one and forms electric core up and down behind the align center around the volume pin by barrier film, stops by stopping adhesive tape.
Described 2 to 5 lugs are seen Fig. 5, Fig. 6, evenly distribute on the length of run L of just described/negative plate.And these 2 to 5 lugs with separately just/negative plate is connected by the method for weldering, riveting or conductive adhesion.
The present invention allows the liquid lithium ionic cell of high current charge-discharge, and its structure is seen Fig. 1 to Fig. 4, is based on positive plate 2 and is separated by by barrier film 3 with negative plate 1 and is wound as one, stops by stopping adhesive tape 4.Especially, having 2 to 5 anode ears 5 evenly to distribute is connected on the length of run L of positive plate 2, also having 2 to 5 negative electrode lugs 6 evenly to distribute is connected on the length of run L of negative plate 1, and just described/negative electrode lug 5/6 is connected with separately block 7/8, and just described/negative plate 2/1 thickness δ is (70～150) μ m.
The present invention is for improving the high current charge-discharge ability of battery, except that just increasing/quantity of negative electrode lug, also order just/negative plate thickness δ attenuate, the length L lengthening has increased the contact area with electrolyte.
Evidence, the product that adopts the inventive method and battery structure to make can increase substantially the high-rate charge-discharge capability of liquid lithium ionic cell.As follows with the discharge performance of battery under the different multiplying discharge scenario that this kind structural group is dressed up:
| Discharge-rate | Discharge time (S) | The capacity release rate |
| ????3.5C | ????1080.0 | ????97.10％ |
| ????5C | ????750.0 | ????97.20％ |
| ????7C | ????520.0 | ????92.40％ |
| ????20C | ????120.0 | ????66.70％ |
Fig. 7 is the voltage-time curve family of drawing according to above-mentioned result of the test, proves that liquid lithium ionic cell of the present invention has good capacity release rate under the high-multiplying power discharge situation, is fit to electric tool one class occasion and uses.
Claims (4)
1. a liquid lithium ionic cell manufacture method that allows high current charge-discharge is characterized in that, comprises the steps:
A. by just/the lug number that increase to connect respectively on the negative plate, making it respectively is 2 to 5, just is being connected to/bear block then respectively, to reduce the electric current that single lug flows through, the charging and discharging currents of raising battery permission;
B. by just reducing/negative plate on the active material coating thickness be (70～150) μ m to control described each pole piece gross thickness δ, thereby the internal resistance of cell during the reduction high current charge-discharge;
C. just described/negative plate is respectively with after separately lug is connected, and is separated by and, is wound into one and forms electric core up and down behind the align center around the volume pin by barrier film, stops by stopping adhesive tape.
2. the liquid lithium ionic cell manufacture method of permission high current charge-discharge according to claim 1 is characterized in that: described 2 to 5 lugs evenly distribute on the length of run L of just described/negative plate.
3. the liquid lithium ionic cell manufacture method of permission high current charge-discharge according to claim 1 is characterized in that: described 2 to 5 lugs with just/negative plate is connected by the method for weldering, riveting or conductive adhesion.
4. liquid lithium ionic cell that allows high current charge-discharge, being separated by by barrier film (3) based on positive plate (2) and negative plate (1) is wound as one, stops by stopping adhesive tape (4), it is characterized in that:
Having 2 to 5 anode ears (5) evenly to distribute is connected on the length of run L of positive plate (2), also having 2 to 5 negative electrode lugs (6) evenly to distribute is connected on the length of run L of negative plate (1), and just described/negative electrode lug (5/6) is connected with separately block (7/8), and just described/negative plate (2/1) thickness δ is (70～150) μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100513600A CN100424924C (en) | 2004-08-31 | 2004-08-31 | Liquid lithium ion cell allowing high carrent charging-discharging |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100513600A CN100424924C (en) | 2004-08-31 | 2004-08-31 | Liquid lithium ion cell allowing high carrent charging-discharging |
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| Publication Number | Publication Date |
|---|---|
| CN1599119A true CN1599119A (en) | 2005-03-23 |
| CN100424924C CN100424924C (en) | 2008-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100513600A Active CN100424924C (en) | 2004-08-31 | 2004-08-31 | Liquid lithium ion cell allowing high carrent charging-discharging |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111710819A (en) * | 2019-03-18 | 2020-09-25 | 宁德新能源科技有限公司 | Pole piece, battery core and battery |
| WO2023155616A1 (en) * | 2022-02-18 | 2023-08-24 | 惠州亿纬锂能股份有限公司 | Lithium battery |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1348229A (en) * | 2000-10-10 | 2002-05-08 | 肖云升 | Method of raising the capacity of lithium ion battery |
| CN1320682C (en) * | 2002-03-08 | 2007-06-06 | 居永明 | Repeatedly chargeable-dischargeable lithium ion power cell and its production method |
-
2004
- 2004-08-31 CN CNB2004100513600A patent/CN100424924C/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111710819A (en) * | 2019-03-18 | 2020-09-25 | 宁德新能源科技有限公司 | Pole piece, battery core and battery |
| WO2023155616A1 (en) * | 2022-02-18 | 2023-08-24 | 惠州亿纬锂能股份有限公司 | Lithium battery |
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| Publication number | Publication date |
|---|---|
| CN100424924C (en) | 2008-10-08 |
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| C14 | Grant of patent or utility model | ||
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Owner name: SHENZHEN CHUANGMING NEW ENERGY CO., LTD. Free format text: FORMER NAME: CHUANGMIN BATTERY TECH CO., LTD., SHENZHEN CITY |
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| CP03 | Change of name, title or address |
Address after: 518057 Guangdong Province, Shenzhen Nanshan High tech Zone south side of Building 8 floor 03 rooms (the office) Patentee after: SHENZHEN CHAM NEW ENERGY CO., LTD. Address before: 518057 Guangdong city of Shenzhen province Nanshan District high tech Industrial Park District Industrial Zone Maqueling 2 Building 2 layer Patentee before: Chuangmin Battery Tech Co., Ltd., Shenzhen City |