CN215933661U - Small-size soft packet of lithium cell - Google Patents
Small-size soft packet of lithium cell Download PDFInfo
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- CN215933661U CN215933661U CN202122265227.7U CN202122265227U CN215933661U CN 215933661 U CN215933661 U CN 215933661U CN 202122265227 U CN202122265227 U CN 202122265227U CN 215933661 U CN215933661 U CN 215933661U
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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 small-sized soft package lithium battery, which relates to the technical field of lithium batteries, comprises a battery cell and is characterized in that: the output end of the battery cell is provided with a positive electrode lug and a negative electrode lug, the positive electrode lug is punched to be used for installing a positive electrode wire, the two ends of the positive electrode wire are respectively provided with a positive electrode wire inner connecting end and a positive electrode wire outer connecting end, the positive electrode wire inner connecting end is fixed on the positive electrode lug through a fastening screw, the negative electrode lug is punched to be used for installing a negative electrode wire, the two ends of the negative electrode wire are respectively provided with a negative electrode wire inner connecting end and a negative electrode wire outer connecting end, the negative electrode wire inner connecting end is fixed on the negative electrode lug through the fastening screw, and a soft package is arranged outside the battery cell.
Description
Technical Field
The utility model relates to the technical field of lithium batteries, in particular to a small-sized soft package lithium battery.
Background
The soft package battery has the advantages of small volume, light weight, high energy density, low cost, easy large-scale industrial production and the like. In recent years, the battery pack is widely used in the field of power batteries such as electric tools, two-wheeled electric vehicles, electric automobiles and unmanned aerial vehicles, and is highly favored. However, the soft package battery also has own short plates and pain points, and mainly takes the bulge of the battery core, the leakage and the short circuit of the pole piece and the pole lug as main points. Because the tab pieces commonly used at present are usually exposed outside the battery core, the tab pieces of the positive and negative electrodes are short in distance during assembly, the area of a conductor exposed in the space is large, and the voltage and current of the circuit are superposed after series connection and parallel connection, so that the potential risk of short circuit of the battery is high and the power is large.
The existing soft package of aluminum-plastic film is to coat the tab glue on the copper-nickel sheet in advance, and then seal the cell by thermoplastic compression with the inner aluminum-plastic film. The electrolyte is a carbonic acid ester solvent and contains corrosive such as hydrofluoric acid. Thus, high requirements are put on the tab adhesive and the production process. The cell is discarded due to leakage of the cell. The exposed nickel sheet has sharp corner opening, and the capacity can cut other electric cores and hands. In addition, the glued tabs are communicated with the aluminum foil wrapped outside, so that the whole battery pack is easily ignited. The real potential safety hazard of the lithium battery almost comes from the conduction of the positive electrode and the negative electrode of the battery. If the anode and the cathode which are likely to contact can be hidden in the cell, the risk is reduced to a single cell voltage range between 2 and 5 volts, the external connection is connected by plastic-coated wires with different thicknesses according to the required magnitude of current and voltage, and the probability of external short circuit can be reduced to the lowest point.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides a small soft package lithium battery, which solves the problems in the background technology.
In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model provides a small-size soft packet of lithium cell, includes electric core, the output of electric core is equipped with anodal ear and negative pole ear, anodal ear punches and is used for installing anodal wire, anodal wire both ends are equipped with anodal wire in-connection end and anodal wire outer joint end respectively, and anodal wire in-connection end passes through fastening screw to be fixed on anodal ear, the negative pole ear punches and is used for installing the negative pole wire, negative pole wire both ends are equipped with negative pole wire in-connection end and negative pole wire outer joint end respectively, and negative pole wire in-connection end passes through fastening screw to be fixed on the negative pole ear, the electric core outside is equipped with soft packet, electric core, anodal ear, negative pole ear all pack inside soft packet of package.
Preferably, the positive lead and the negative lead partially penetrate through the soft package, and the penetrating part is subjected to sealing treatment.
Preferably, the positive electrode lead inner connection end and the positive electrode lead outer connection end are flat.
Preferably, the negative electrode lead inner connecting end and the negative electrode lead outer connecting end are both flat.
Preferably, the connection end in the positive tab and the positive lead is provided with an insulating coating, and the insulating coating is preferably made of materials which are resistant to electrolyte corrosion and convenient to heat fusion, such as PP, PE and the like.
Preferably, the connection end in the negative electrode tab and the negative electrode lead is provided with an insulating coating.
Preferably, the positive electrode lead external connection end and the negative electrode lead external connection end are used for an external power supply interface.
The utility model provides a small soft package lithium battery which has the following beneficial effects: the utility model changes the mechanism that the tab is exposed outside, the tab is hidden in a soft bag, and the method of leading out the positive and negative leads can reduce the exposed surface of the conductor, reduce the probability of short circuit to the lowest point, avoid the risk of short circuit caused by collision of the tab and avoid hurting hands; the electrode lugs are coated by insulating coating films made of materials which are resistant to electrolyte corrosion and convenient to thermally fuse, and the risk of leakage of the battery core is avoided.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
As shown in fig. 1, a small-sized soft package lithium battery comprises an electrical core 1, an output end of the electrical core 1 is provided with a positive tab 3 and a negative tab 11, the positive tab 3 is punched for installing a positive lead 6, two ends of the positive lead 6 are respectively provided with a positive lead inner connecting end 8 and a positive lead outer connecting end 7, the positive lead inner connecting end 8 is fixed on the positive tab 3 through a fastening screw 5, the negative tab 11 is punched for installing a negative lead 12, two ends of the negative lead 12 are respectively provided with a negative lead inner connecting end 9 and a negative lead outer connecting end 10, the negative lead inner connecting end 9 is fixed on the negative tab 11 through the fastening screw 5, a soft package 2 is arranged outside the electrical core 1, the positive tab 3 and the negative tab 11 are all packaged inside the soft package 2, the positive lead 6 and the negative lead 12 partially pass through the soft package 2, and the penetration is sealed, the positive wire inner connecting end 8 and the positive wire outer connecting end 7 are flat, the negative wire inner connecting end 9 and the negative wire outer connecting end 10 are flat, the positive lug 3 and the positive wire inner connecting end 8 are provided with insulating envelopes 4, the negative lug 11 and the negative wire inner connecting end 9 are provided with insulating envelopes 4, and the positive wire outer connecting end 7 and the negative wire outer connecting end 10 are used for an external power supply interface.
The utility model changes the mechanism that the tab is exposed outside, the tab is hidden in a soft bag, and the method of leading out the positive and negative leads can reduce the exposed surface of the conductor, reduce the probability of short circuit to the lowest point, avoid the risk of short circuit caused by collision of the tab and avoid hurting hands; the electrode lugs are coated by insulating coating films made of materials which are resistant to electrolyte corrosion and convenient to thermally fuse, and the risk of leakage of the battery core is avoided.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (7)
1. The utility model provides a small-size soft packet of lithium cell, includes electric core, its characterized in that: the output of electric core is equipped with anodal ear and negative pole ear, anodal ear punches and is used for installing anodal wire, anodal wire both ends are equipped with anodal wire in-connection end and anodal wire outer joint end respectively, and anodal wire in-connection end passes through fastening screw to be fixed on anodal ear, the negative pole ear punches and is used for installing the negative pole wire, negative pole wire both ends are equipped with negative pole wire in-connection end and negative pole wire outer joint end respectively, and negative pole wire in-connection end passes through fastening screw to be fixed on the negative pole ear, the electric core outside is equipped with soft package, electric core, anodal ear, negative pole ear all pack inside soft package.
2. The small soft pack lithium battery of claim 1, wherein: the positive lead and the negative lead partially penetrate through the soft package, and the penetrating part is sealed.
3. The small soft pack lithium battery of claim 1, wherein: the inner connecting end of the positive wire and the outer connecting end of the positive wire are both flat.
4. The small soft pack lithium battery of claim 1, wherein: the negative electrode lead inner connecting end and the negative electrode lead outer connecting end are both flat.
5. The small soft pack lithium battery of claim 1, wherein: and the connecting end between the positive lug and the positive lead is provided with an insulating coating.
6. The small soft pack lithium battery of claim 1, wherein: and the inner connecting end of the negative electrode lug and the negative electrode lead is provided with an insulating coating.
7. The small soft pack lithium battery of claim 1, wherein: and the positive wire outer connecting end and the negative wire outer connecting end are used for an external power supply interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122265227.7U CN215933661U (en) | 2021-09-18 | 2021-09-18 | Small-size soft packet of lithium cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122265227.7U CN215933661U (en) | 2021-09-18 | 2021-09-18 | Small-size soft packet of lithium cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215933661U true CN215933661U (en) | 2022-03-01 |
Family
ID=80417393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122265227.7U Active CN215933661U (en) | 2021-09-18 | 2021-09-18 | Small-size soft packet of lithium cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215933661U (en) |
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2021
- 2021-09-18 CN CN202122265227.7U patent/CN215933661U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220927 Address after: No. 177-1, Zhizhou Avenue, Huaxi Street, Changxing County, Huzhou City, Zhejiang Province 313100 Patentee after: Zhejiang Huangneng New Energy Technology Co.,Ltd. Address before: 313001 No. 99-44, hangchangqiao Middle Road, Hongfeng Jiayuan, Aishan street, Wuxing District, Huzhou City, Zhejiang Province Patentee before: Huzhou dianjiujiu New Energy Technology Co.,Ltd. |