CN201868525U - Lithium-ion battery - Google Patents
Lithium-ion battery Download PDFInfo
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- CN201868525U CN201868525U CN2010206318848U CN201020631884U CN201868525U CN 201868525 U CN201868525 U CN 201868525U CN 2010206318848 U CN2010206318848 U CN 2010206318848U CN 201020631884 U CN201020631884 U CN 201020631884U CN 201868525 U CN201868525 U CN 201868525U
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- ion battery
- pole piece
- bar shaped
- paper tinsel
- empty paper
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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 discloses a lithium-ion battery. The lithium-ion battery is a cylindrical lithium-ion battery with large capacity and high safety. With a particular pole piece structure, the large-current discharging and charging property of the lithium-ion battery can be improved; and with a particular mechanical sealing structure, the safety of the large-sized lithium-ion battery can be greatly improved.
Description
Technical field
The utility model relates to the lithium ion battery field, relates in particular to a kind of big capacity, high security ferric phosphate lithium cell.
Background technology
Lithium ion battery from nineteen ninety in Japanese Sony company by after the successful development, just with its operating voltage height (3.7V), specific energy height (80 ~ 140wh/kg), self-discharge rate low (5%/moon), memory-less effect and advantage such as environmentally friendly and be subjected to the generally favor of battery circle.Study on Li-ion batteries using and industrialization upsurge have worldwide been started.Because lithium ion battery has catered to communication and the fast development of information technology demand for development to battery miniaturization, lightweight, energetic, users at different levels are also climbed up and up to its demand.Japanese lithium ion battery sales volume reached 1,200,000,000 dollars in 1996, had surpassed the sales volume of MH-Ni battery and Ni-Cd battery.By 2002, lithium ion battery occupied absolute dominant position in small-sized secondary batteries.
But the maximization of lithium ion battery is limited by manufacturing process and fail safe always.
Lithium ion battery adopts the thin type polarizing electrode, collector adopts aluminium foil and Copper Foil, small-capacity cells such as mobile phone, notebook computer battery adopt monopole ear can satisfy instructions for use, and band lug winding process is a main flow production technology of present lithium rechargeable battery industry; But for big capacity, high-power type lithium rechargeable battery, because operating current is bigger, must adopt multipole ear technology, if reel again behind the first soldering polar ear, because the existence of pole piece thickness deviation, the position of lug behind coiling is difficult to consistent overlapping, and the also intractable that is connected of multipole ear and conduction pole.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
The purpose of this utility model is to provide a kind of lithium ion battery, is intended to solve present lithium rechargeable battery product and the existing manufacturing difficult problem of production technology and defective.
The technical solution of the utility model is as follows:
A kind of lithium ion battery, comprise anodal cap, the negative pole cap, the aluminium conductive plate, the nickel conductive plate, the nickel plating steel cylinder, the electricity core, anodal cap and negative pole cap are arranged on the two ends of nickel plating steel cylinder, be used for electric core is encapsulated in the nickel plating steel cylinder, the electricity core comprises anode pole piece, cathode pole piece, barrier film, electrolyte, diaphragm clip is between anode pole piece and cathode pole piece, anode pole piece, cathode pole piece and membrane coil are held the receiving space of electrolyte around formation, the two ends of electricity core are respectively positive terminal and negative pole end, the positive terminal of electricity core is connected with the aluminium conductive plate, the negative pole end of electricity core is connected with the nickel conductive plate, the nickel conductive plate is connected with the negative pole cap, the aluminium conductive plate is connected with anodal cap, have empty paper tinsel position of article one bar shaped that does not apply positive electrode active materials and the empty paper tinsel of second bar shaped position in the both sides of anode pole piece, have the empty paper tinsel position of the 3rd bar shaped that does not apply negative active core-shell material and the 4th the empty paper tinsel of bar shaped position in the both sides of cathode pole piece.
Described lithium ion battery, wherein, the width at the empty paper tinsel of described article one bar shaped position is 0.20-1.0mm; The width at the empty paper tinsel of described second bar shaped position is 5.0-30mm.
Described lithium ion battery, wherein, the width at the empty paper tinsel of described the 3rd bar shaped position is 0.20-1.0mm; The width at the empty paper tinsel of described the 4th bar shaped position is 5.0-30mm.
Described lithium ion battery, wherein, the positive pole of described lithium ion battery block contains current blocking device and irreversible relief valve; The negative pole block contains the reversible pressure device that rushes down.
The beneficial effects of the utility model: realized the manufacturing problem of large-scale lithium ion battery, and technology is simple, easily is automated, production cost is low; Special pole piece structure can improve the high rate during charging-discharging of lithium ion battery; Special mechanical enclosuring structure, the fail safe that has greatly improved large-scale lithium ion battery.
Description of drawings
Fig. 1 is the schematic diagram of the anode pole piece of the utility model embodiment lithium ion battery;
Fig. 2 is the utility model embodiment lithium ion battery slot rolling structural representation;
Fig. 3 is the structural representation after the utility model embodiment lithium ion battery seals;
Fig. 4 is the positive cover cap schematic diagram of the utility model embodiment lithium ion battery;
Fig. 5 is the negative cover cap schematic diagram of the utility model embodiment lithium ion battery;
Fig. 6 is the negative pole schematic bottom view of the utility model embodiment lithium ion battery.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, clear and definite, below the utility model is further described with reference to the accompanying drawing embodiment that develops simultaneously.
Big capacity of the present utility model, the high security column lithium ion battery, comprise anodal cap, the negative pole cap, the aluminium conductive plate, the nickel conductive plate, the nickel plating steel cylinder, the electricity core, anodal cap and negative pole cap are arranged on the two ends of nickel plating steel cylinder, be used for electric core is encapsulated in the nickel plating steel cylinder, the electricity core comprises anode pole piece, cathode pole piece, barrier film, electrolyte, diaphragm clip is between anode pole piece and cathode pole piece, anode pole piece, cathode pole piece and membrane coil are held the receiving space of electrolyte around formation, the two ends of electricity core are respectively positive terminal and negative pole end, the positive terminal of electricity core is connected with the aluminium conductive plate, the negative pole end of electricity core is connected with the nickel conductive plate, the nickel conductive plate is connected with the negative pole cap, and the aluminium conductive plate is connected with anodal cap.
Described anode pole piece and cathode pole piece adopt aluminium foil 2 and Copper Foil 6 to do collector respectively, as shown in Figure 1, be not coated with the empty paper tinsel position 8 of article one bar shaped and the empty paper tinsel of the second bar shaped position 9 of active material when coating active material coating in the reservation of the both sides of anode pole piece: the width at the empty paper tinsel of article one bar shaped position 8 is in the 0.20-1.0mm scope; The width at the empty paper tinsel of second bar shaped position 9 is in the 5.0-30mm scope.Accordingly, be not coated with the empty paper tinsel position of the 3rd bar shaped and the 4th the empty paper tinsel of bar shaped position of active material when coating active material coating in the reservation of the both sides of cathode pole piece: the width at the 3rd the empty paper tinsel of bar shaped position is in the 0.20-1.0mm scope; Article four, the width at the empty paper tinsel of bar shaped position is in the 5.0-30mm scope.
The effect of reserving the empty paper tinsel of article one bar shaped position 8 and the 3rd the empty paper tinsel of bar shaped position is to switch to coating and produce burr and material is fallen in the part when the rolling pole piece is cut, and improves battery security.Pole piece is cut the formation of burr and the high-hardness inorganic active material in the pole piece coating has much relations to the wearing and tearing of cutter, when adopting method of the present utility model, only divide when switching to pure aluminium foil or Copper Foil when cutting pole piece, wearing and tearing to cutter are very slight, above-mentioned burr can reduce greatly, therefore the fail safe that can improve high capacity cell.
The effect of reserving the empty paper tinsel of second bar shaped position 9 and the 4th the empty paper tinsel of bar shaped position is to be convenient to many lugs that tape welding not connects and to realize that high efficiency reels.Be in order to be connected with drawing at this position behind anode pole piece, barrier film, the cathode pole piece continuous reeling with collector body, anode pole piece and cathode pole piece draw the both sides that lay respectively at utmost point group with collector body, the empty paper tinsel end of anode pole piece adopts laser welding to be connected with aluminium conductive plate 11, and aluminium conductive plate 11 adopts laser welding to be connected with anodal block.Empty paper tinsel end of cathode pole piece and nickel conductive plate 21 adopt laser welding, and nickel conductive plate 21 adopts electric resistance welding to be connected with the negative pole block.Simultaneously, adopting being connected of conductive plate and the empty paper tinsel of bar bar shaped position, also is best current collection mode, helps heavy-current discharge.
Shown in Fig. 2, Fig. 3, adopt mechanical slot rolling technology at the two ends of nickel plating steel pipe 7, anodal, negative pole block adopts mechanical sealing mode sealing, and nickel plating steel pipe 7 is not charged.The both-end machinery slot rolling of nickel plating steel pipe 7, machinery seal, and have realized the production of high capacity lithium ion battery, have also increased the fail safe of high capacity lithium ion battery.
As Fig. 4, Fig. 5 and shown in Figure 6, anodal block contains CID(current blocking device), the PTC(high power battery can not contain) and irreversible relief valve; The negative pole block contains the reversible pressure device that rushes down.So also improved the fail safe of high capacity cell greatly.
Big capacity of the present utility model, high security column lithium ion battery, it is the active material manufacturing that positive electrode active materials adopts LiFePO 4.
LiFePO 4 LiFe(M) PO
4(M is the Nb, the Mn that mix up, Co etc.) is PO in the positive electrode
4 3-Tetrahedron is highly stable, plays the support structure effect in charge and discharge process, especially overcharging, can not discharging highly active oxygen atom under the overheat condition, does not exist as LiCoO
2, LiNiCoMnO
2, LiMn
2O
4Deng the such vigorous oxidation of positive electrode, explosive reaction; Simultaneously because in charge and discharge process, LiFePO
4Take off the FePO under the lithium state fully
4Be orthohormbic structure all, cell parameter has only minor variations, and battery has excellent cycle performance.Therefore adopt LiFePO
4For the lithium ion battery of positive electrode can effectively be avoided explosive reaction, the potential performance requirement that satisfies present electric automobile or electronic toy to high power capacity, high-power drive pond.
The beneficial effects of the utility model are:
1. special pole piece structure can improve the high rate during charging-discharging of lithium ion battery;
2. special mechanical enclosuring structure, the fail safe that has greatly improved large-scale lithium ion battery.
High capacity cell of the present utility model refers in particular to rated capacity (1C) more than 5Ah, especially the above lithium rechargeable battery of 10Ah, comprise capacity type battery and high-power type battery in the high-capacity battery, the maximum discharge-rate of capacity type battery is below 2C, high-power type battery refers in particular to the high-power type battery of minimum discharge-rate more than 3C, according to concrete instructions for use, do suitable technology adjustment and both can produce the battery of pure high power capacity, also can produce high power capacity, the high-power battery that has both by method of the present utility model.
Should be understood that; application of the present utility model is not limited to above-mentioned giving an example; for those of ordinary skills, can be improved according to the above description or conversion, all these improvement and conversion all should belong to the protection range of the utility model claims.
Claims (4)
1. lithium ion battery, comprise anodal cap, the negative pole cap, the aluminium conductive plate, the nickel conductive plate, the nickel plating steel cylinder, the electricity core, anodal cap and negative pole cap are arranged on the two ends of nickel plating steel cylinder, be used for electric core is encapsulated in the nickel plating steel cylinder, the electricity core comprises anode pole piece, cathode pole piece, barrier film, electrolyte, diaphragm clip is between anode pole piece and cathode pole piece, anode pole piece, cathode pole piece and membrane coil are held the receiving space of electrolyte around formation, the two ends of electricity core are respectively positive terminal and negative pole end, the positive terminal of electricity core is connected with the aluminium conductive plate, the negative pole end of electricity core is connected with the nickel conductive plate, the nickel conductive plate is connected with the negative pole cap, the aluminium conductive plate is connected with anodal cap, it is characterized in that, have empty paper tinsel position of article one bar shaped that does not apply positive electrode active materials and the empty paper tinsel of second bar shaped position in the both sides of anode pole piece, have the empty paper tinsel position of the 3rd bar shaped that does not apply negative active core-shell material and the 4th the empty paper tinsel of bar shaped position in the both sides of cathode pole piece.
2. lithium ion battery according to claim 1 is characterized in that, the width at the empty paper tinsel of described article one bar shaped position is 0.20-1.0mm; The width at the empty paper tinsel of described second bar shaped position is 5.0-30mm.
3. lithium ion battery according to claim 1 is characterized in that, the width at the empty paper tinsel of described the 3rd bar shaped position is 0.20-1.0mm; The width at the empty paper tinsel of described the 4th bar shaped position is 5.0-30mm.
4. lithium ion battery according to claim 1 is characterized in that, the positive pole block of described lithium ion battery contains current blocking device and irreversible relief valve; The negative pole block contains the reversible pressure device that rushes down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206318848U CN201868525U (en) | 2010-11-30 | 2010-11-30 | Lithium-ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206318848U CN201868525U (en) | 2010-11-30 | 2010-11-30 | Lithium-ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201868525U true CN201868525U (en) | 2011-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206318848U Expired - Fee Related CN201868525U (en) | 2010-11-30 | 2010-11-30 | Lithium-ion battery |
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| Country | Link |
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| CN (1) | CN201868525U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109962189A (en) * | 2017-12-25 | 2019-07-02 | 北京世纪东方通讯设备有限公司 | A kind of battery for column tail safety device |
| CN112447938A (en) * | 2020-12-07 | 2021-03-05 | 苏州新中能源科技有限公司 | Cell structure of laminated lithium battery and manufacturing method thereof |
-
2010
- 2010-11-30 CN CN2010206318848U patent/CN201868525U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109962189A (en) * | 2017-12-25 | 2019-07-02 | 北京世纪东方通讯设备有限公司 | A kind of battery for column tail safety device |
| CN109962189B (en) * | 2017-12-25 | 2024-03-22 | 北京世纪东方智汇科技股份有限公司 | Battery for train tail safety protection device |
| CN112447938A (en) * | 2020-12-07 | 2021-03-05 | 苏州新中能源科技有限公司 | Cell structure of laminated lithium battery and manufacturing method thereof |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
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Effective date of registration: 20110919 Granted publication date: 20110615 |
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| PD01 | Discharge of preservation of patent |
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| RINS | Preservation of patent right or utility model and its discharge | ||
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| RINS | Preservation of patent right or utility model and its discharge | ||
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| RINS | Preservation of patent right or utility model and its discharge | ||
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| PP01 | Preservation of patent right |
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| RINS | Preservation of patent right or utility model and its discharge | ||
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| RINS | Preservation of patent right or utility model and its discharge | ||
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| RINS | Preservation of patent right or utility model and its discharge | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110615 Termination date: 20131130 |