CN203166010U - Cylindrical lithium iron battery - Google Patents
Cylindrical lithium iron battery Download PDFInfo
- Publication number
- CN203166010U CN203166010U CN 201320222719 CN201320222719U CN203166010U CN 203166010 U CN203166010 U CN 203166010U CN 201320222719 CN201320222719 CN 201320222719 CN 201320222719 U CN201320222719 U CN 201320222719U CN 203166010 U CN203166010 U CN 203166010U
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- CN
- China
- Prior art keywords
- battery
- negative electrode
- cover
- positive
- battery cover
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Y02E60/12—
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- Sealing Battery Cases Or Jackets (AREA)
- Primary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model relates to a cylinder formula lithium iron battery. The battery comprises a negative electrode cover, a battery shell, a negative electrode current collector, a negative electrode, a diaphragm, a positive plate, a metal current collector, an inner battery cover, a thermoplastic bush and an exhaust ball, wherein the positive plate and the negative electrode are arranged in a hollow cavity arranged in the battery shell, the diaphragm is arranged between the positive plate and the negative electrode, a pole group at the outermost circle of a cylinder body is the positive electrode, the negative electrode is wrapped in the pole group, the negative electrode current collector is arranged between a gasket and the negative electrode cover, a positive temperature coefficient thermistor is arranged on the inner side of the negative electrode cover, the inner battery cover and an outer battery cover are arranged at the other end of the battery shell, a cavity is formed between the inner battery cover and the outer battery cover, the exhaust ball is arranged in the cavity, the metal current collector is arranged on the inner side of the inner battery cover, an exhaust jack is arranged on the outer battery cover, a metal elastic element is arranged on the outer side of the outer battery shell, the battery shell is the positive electrode current collector of the battery, and the negative current collector is welded with the negative electrode cover and sealed and formed. The utility model discloses simple structure, simple to operate, use cost is low.
Description
Technical Field
The utility model relates to a cylinder formula lithium iron battery belongs to the transformation technique of cylinder formula lithium iron battery.
Background
The disposable cylindrical battery in the market is mainly an alkaline zinc-manganese battery, which has the advantages of low price but has the disadvantages of low capacity and poor high-rate discharge performance, and the battery usually contains trace metal mercury, so that the disposable cylindrical battery is not suitable for electric appliances used under heavy load conditions such as digital cameras, electric toys, instruments and meters, and the like, and causes environmental pollution after being discarded.
In recent years, with the development of electronic technology and the increasing attention of various countries in the world on environmental protection, higher requirements are put forward on chemical power sources, and the lithium/iron disulfide cylindrical battery can overcome the defects of the alkaline zinc-manganese cylindrical battery and has the outstanding advantages of high capacity, light weight, good rate performance and the like, but the current lithiated iron cylindrical battery has high internal resistance and poor internal resistance uniformity, and the quality and the performance of the battery are influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to consider above-mentioned problem and provide a simple structure, the internal resistance is low, and the security performance is good, cylinder formula lithium iron battery that use cost is low. The utility model discloses can satisfy user's operation requirement.
The technical scheme of the utility model is that: the utility model discloses a cylindrical lithium iron battery, including the negative pole lid, positive temperature thermistor, the battery seal circle, battery case, the negative pole mass flow body, the gasket, the negative pole, the diaphragm, the positive plate, the metal current collector, the packing ring, interior battery cover, the thermoplasticity bush, the air discharge ball, wherein install positive plate and negative pole in the cavity that battery case established, the diaphragm is placed between positive plate and negative pole, and the diaphragm rolls into the barrel together with positive plate and negative pole, and keep apart positive and negative poles, the utmost point group of barrel outermost lane is the positive pole, the negative pole parcel is in utmost point group inside, the utmost point group outermost circle positive pole end uncoated side is direct to contact with battery case, gasket and negative pole lid are installed to battery case's one end, the negative current collector is arranged between the gasket and the negative cover, the battery sealing ring is arranged between the negative cover and the battery shell, the positive temperature coefficient thermistor is arranged on the inner side of the negative cover, the inner battery cover and the outer battery cover are arranged at the other end of the battery shell, a cavity is formed between the inner battery cover and the outer battery cover, the exhaust ball is arranged in the cavity formed between the inner battery cover and the outer battery cover, the metal current collector is arranged on the inner side of the inner battery cover, the gasket is arranged between the inner battery cover and the battery shell, the exhaust jack is arranged on the outer battery cover, the thermoplastic bushing is further arranged between the exhaust ball and the outer battery cover, the metal elastic element is arranged on the outer side of the outer battery cover, the battery shell is the positive electrode of the battery, and the negative current collector and the negative cover are welded and sealed and formed.
The utility model has the advantages that: the utility model discloses owing to adopt and to install positive temperature coefficient of thermal resistance in the inboard of negative pole lid, when exceeding certain temperature, its resistance value is the increase of step nature along with the rising of temperature, has improved the security of battery. The exhaust ball is arranged in a cavity formed between the inner battery cover and the outer battery cover, and the outer battery cover is provided with an exhaust jack which can automatically exhaust and release pressure when the air pressure in the battery is increased. The outer side of the outer battery cover is provided with a spring or a metal spring piece and other metal elastic elements which have compressibility or elasticity and can inhibit and relieve the expansion of the battery in the discharging process, so that the discharging stability of the battery is enhanced, the discharging capacity and the safety line of the battery are improved, and the quality of the battery is improved. The utility model discloses it is pollution-free to the environment, be favorable to enlarging lithium iron button cell's range of application. The competitiveness of the lithium-iron battery in the application of high-end electronic instruments and meters is enhanced, the production process of the battery is simplified, and the lithium-iron battery is suitable for large-scale industrial production. The utility model relates to a simple structure, excellent performance's cylinder formula lithium iron battery.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
Example (b):
the structure of the utility model is schematically shown in fig. 1, the lithium iron battery of the utility model comprises a negative electrode cover 1, a positive temperature coefficient thermistor 2, a battery seal ring 3, a battery shell 4, a negative current collector 5, a gasket 6, a negative electrode 7, a diaphragm 8, a positive electrode plate 9, a metal current collector 10, a gasket 11, an inner battery cover 13, a thermoplastic bush 15, an exhaust ball 16 and an exhaust jack 17, wherein the positive electrode plate 9 and the negative electrode 7 are arranged in a hollow cavity of the battery shell 4, the diaphragm 8 is arranged between the positive electrode plate 9 and the negative electrode 7, the gasket 6 and the negative electrode cover 1 are arranged at one end of the battery shell 4, the negative current collector 5 is arranged between the gasket 6 and the negative electrode cover 1, the battery seal ring 3 is arranged between the negative electrode cover 1 and the battery shell 4, the positive temperature coefficient thermistor 2 is arranged at the inner side of the negative electrode cover 1, the inner battery cover 13 and an outer battery cover 12 are arranged at the other end of the battery shell 4, a cavity is formed between the inner battery cover 13 and the outer battery cover 12, the exhaust ball 16 is arranged in the cavity formed between the inner battery cover 13 and the outer battery cover 12, the inner side of the inner battery cover 13 is provided with a metal current collector 10, a gasket 11 is arranged between the inner battery cover 13 and the battery shell 4, the outer battery cover 12 is provided with an exhaust jack 17, a thermoplastic bush 15 is also arranged between the exhaust ball 16 and the outer battery cover 12, the outer side of the outer battery cover 12 is provided with a metal elastic element 18, the diaphragm 8 is arranged between the positive plate 9 and the negative electrode 7, the diaphragm 8, the positive plate 9 and the negative electrode 7 are rolled into a cylinder body together, and separates the positive and negative electrodes, the pole group at the outermost ring of the cylinder body is the positive electrode, the negative electrode 7 is wrapped in the pole group, the uncoated side of the tail end of the positive electrode at the outermost ring of the pole group is directly contacted with the battery shell 4, the battery shell 4 is the positive electrode current collector of the battery, and welding the negative current collector 5 with the negative cover 1, and sealing and forming.
The metal elastic element 18 installed on the outer side of the outer battery cover 12 is a metal spring plate or a spring. In this embodiment, the metal elastic element 18 is an elastic metal sheet.
In addition, a positive terminal sheath 14 is also provided on the top of the outer battery cover 12.
In this example, the positive electrode sheet 9 is a dense aluminum foil tape to which the positive electrode active material FeS2 is attached.
The negative electrode 7 is an active material. In this embodiment, the negative electrode 7 is metal lithium.
The battery case 4 is an aluminum case or a nickel-plated steel case with a thickness of 0.1mm to 0.4 mm. In this embodiment, the battery case 4 is an aluminum case having a thickness of 0.2 mm.
The working principle of the utility model is as follows: when the positive temperature coefficient thermistor 2 arranged on the inner side of the negative cover 1 exceeds a certain temperature, the resistance value of the positive temperature coefficient thermistor increases in a step-like manner along with the increase of the temperature, and when the air pressure in the battery increases, the exhaust ball arranged in a cavity formed between the inner battery cover and the outer battery cover can automatically exhaust and release air through the exhaust jack arranged on the outer battery cover. The metal elastic element 18 arranged outside the outer battery cover 12 has compressibility or elasticity, and can inhibit and relieve the expansion of the battery in the discharging process, thereby enhancing the discharging stability of the battery, improving the discharging capacity and safety line of the battery, and improving the quality of the battery.
Claims (7)
1. A cylindrical lithium-iron battery is characterized by comprising a negative electrode cover, a positive temperature coefficient thermistor, a battery sealing ring, a battery shell, a negative electrode current collector, a gasket, a negative electrode, a diaphragm, a positive plate, a metal current collector, a gasket, an inner battery cover, a thermoplastic bush and an exhaust ball, wherein the positive plate and the negative electrode are arranged in a hollow cavity formed in the battery shell, the diaphragm is placed between the positive plate and the negative electrode, the diaphragm, the positive plate and the negative electrode are rolled into a cylinder and separate the positive plate and the negative plate, a polar group on the outermost circle of the cylinder is a positive electrode, the negative electrode is wrapped in the polar group, the uncoated side of the tail end of the positive electrode in the outermost circle of the polar group is directly contacted with the battery shell, the gasket and the negative electrode cover are arranged at one end of the battery shell, the negative electrode current collector is arranged between the gasket and the negative electrode cover, the battery sealing ring is arranged between the inner battery cover and the battery shell, the positive temperature coefficient resistor is arranged at the inner side of the battery shell, the inner end of the battery shell and the outer battery cover are provided with the inner battery cover and the outer battery cover is provided with the metal current collector, the battery cover, the exhaust ball, and the battery cover is welded with the battery cover, and the battery cover is also welded with the battery cover.
2. The cylindrical lithium-iron battery of claim 1, wherein the metal elastic element disposed on the outer side of the outer battery cover is a metal leaf spring or a spring.
3. The cylindrical lithium iron battery of claim 1, wherein the top of the outer lid is further provided with a positive terminal sheath.
4. The cylindrical lithium-iron battery according to claim 1, wherein the positive electrode sheet is a dense aluminum foil strip to which a positive electrode active material FeS2 is attached.
5. The cylindrical lithium-iron battery according to claim 1, wherein the negative electrode is an active material.
6. The cylindrical lithium-iron battery according to claim 5, wherein the negative electrode is metallic lithium.
7. The cylindrical lithium-iron battery according to any one of claims 1 to 6, wherein the battery case is an aluminum case or a nickel-plated steel case having a thickness of 0.1mm to 0.4 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320222719 CN203166010U (en) | 2013-04-27 | 2013-04-27 | Cylindrical lithium iron battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320222719 CN203166010U (en) | 2013-04-27 | 2013-04-27 | Cylindrical lithium iron battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203166010U true CN203166010U (en) | 2013-08-28 |
Family
ID=49027173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320222719 Expired - Fee Related CN203166010U (en) | 2013-04-27 | 2013-04-27 | Cylindrical lithium iron battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203166010U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023101107A1 (en) * | 2021-12-02 | 2023-06-08 | 삼성에스디아이(주) | Cylindrical secondary battery |
-
2013
- 2013-04-27 CN CN 201320222719 patent/CN203166010U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023101107A1 (en) * | 2021-12-02 | 2023-06-08 | 삼성에스디아이(주) | Cylindrical secondary battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20140427 |