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Polymer material battery box for lithium-ion power and energy storage battery

An energy storage battery and battery box technology, applied in secondary batteries, battery pack components, circuits, etc., can solve problems such as processing difficulties, limited design of lithium-ion power and energy storage batteries, and limited appearance

Inactive Publication Date: 2017-03-15
NINGBO ECOT SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the battery shell of this metal has defects such as difficult processing and limited shape, which lead to limited design of lithium-ion power and energy storage batteries; moreover, the metal shell of the battery is conductive, and the safety cannot be fully guaranteed

Method used

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  • Polymer material battery box for lithium-ion power and energy storage battery
  • Polymer material battery box for lithium-ion power and energy storage battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The battery box used for lithium-ion power and energy storage batteries prepared in this embodiment, such as figure 1 As shown, it includes a box body 1, an upper cover 2 and a power interface 3. The power interface includes a main power connection hole (including a positive pole connection hole and a negative pole connection hole) and a sensor connection hole. The battery box is a rectangular parallelepiped structure.

[0030] The polymer material for the box body and the upper cover of the battery box is selected from polyphenylene sulfide, and the injection molding method is used to inject the box body 1 and the upper cover 2 of the cuboid structure in the mold, and the box body 1 and the upper cover 2 are made of Laser welding technology connection. The main power connection hole and the sensor connection hole 3 are fixed by in-mold injection molding. Thus, the battery case of the present invention can be produced.

[0031] The specific usage method of the battery...

Embodiment 2

[0034] The battery box used for lithium-ion power and energy storage batteries prepared in this embodiment, such as figure 2 As shown, it includes a box body 11, an upper cover 12 and a power interface 13. The power interface includes a main power connection hole (including a positive pole connection hole and a negative pole connection hole) and a sensor connection hole. The battery box is a cylindrical structure.

[0035] The polymer material for the box body and the upper cover of the battery box is selected from polyphenylene sulfide, and the injection molding method is used to inject the box body 11 and the upper cover 12 of the cylindrical structure in the mold. The box body 11 and the upper cover 12 Connected by laser welding technology. The main power connection hole and the sensor connection hole 13 are fixed by in-mold injection molding. Thus, the battery case of the present invention can be produced.

[0036] The specific usage method of the battery box is: before...

Embodiment 3

[0039] The structure of the battery box and its preparation method in Example 1 are used, the only difference is that the polymer material for the box body and the upper cover of the battery box is made of chlorinated unsaturated polyester resin.

[0040] The strength retention rate of the lithium-ion battery case prepared in Example 3 was above 95% in the experiment of immersing in the ternary lithium electrolyte for 240 hours.

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Abstract

The invention provides a polymer material battery box for a lithium-ion power and energy storage battery and a preparation method of the polymer material battery box. A box body and an upper cover of the battery box are processed in manners of injection molding extrusion, blow molding or mold pressing and the like; the box body and the upper cover are fused in a fusing manner, so that the polymer material battery box is convenient to process, high in production efficiency and high in design freedom, and the battery box with arbitrary design structure and shape can be prepared. The box body and the upper cover of the battery box are prepared from a polymer or a composite material thereof, so that the corrosive effect of a lithium-ion battery electrolyte on the battery box can be effectively prevented; the problem that a common polymer material loses the strength when in direct contact with the electrolyte due to swelling of an organic solvent or corrosion of an inorganic filler is effectively solved; the service life of the lithium-ion battery box is significantly prolonged; meanwhile, the polymer or the composite material thereof also has certain heat resistance; and furthermore, the problem of the insecurity caused by electric conduction of an existing metal material battery box is solved due to the non-conductivity of the polymer or the composite material thereof.

Description

technical field [0001] The invention relates to a secondary battery battery box and the technical field of preparation thereof, in particular to a battery box made of polymer material for lithium-ion power and energy storage batteries. Background technique [0002] With the increase of oil price and the seriousness of environmental pollution, as a substitute for gasoline and diesel vehicles, people have developed various power locomotives using new energy technologies, among which electric vehicles are the most promising. The core technology of electric vehicles is power battery technology. At present, lithium-ion power and energy storage batteries are considered to be the most promising power battery solutions. [0003] Lithium-ion power and energy storage batteries mainly include a casing, an electrolyte built into the casing, a positive electrode, a battery separator, and a negative electrode sheet assembled by lamination or winding assembly. Output power through the pos...

Claims

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Application Information

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IPC IPC(8): H01M2/10H01M10/0525H01M50/20
CPCH01M10/0525H01M50/20Y02E60/10
Inventor 张辉闪彭伟伟龙小翊周奇洋文斌邬珩梁李其梅
Owner NINGBO ECOT SCI & TECH
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