Insulation protection method for pole leading-out wire of thermal battery stack

Abstract

The invention provides an insulation protection method for a pole leading-out wire of a thermal battery stack, which comprises the steps of firstly, enabling the root of the pole leading-out wire to sequentially penetrate through a short mica strip and a long mica strip and then leading out, wherein the length of the long mica strip is consistent with the height of the stack, and the short mica strip is shorter than the long mica strip and clings to the stack; wrapping the stack with a mica plate, and leading out the pole leading-out wire through the mica plate; and finally, winding the stackwrapped by the mica plate with a glass cloth tape to completely wrap the mica plate. According to the invention, multiple insulation protection layers are formed, the breakdown voltage resistance is high, and the insulation effect is good; omnibearing protection is realized for the pole leading-out wire, so that the possibility that the pole leading-out wire is overlapped with the stack under a harsh mechanical environment condition is thoroughly avoided; and the use of strong carcinogen asbestos paper is avoided in the used materials, so that the environmental protection property is good.

Description

technical field [0001] The invention belongs to the technical field of thermal batteries, and in particular relates to an insulation protection method for lead-out wires. Background technique [0002] Thermal battery, also known as molten salt battery, is a disposable reserve battery that uses molten salt as electrolyte and uses its own heating element to melt and activate it. It is widely used in missiles, rockets, shells, fuzes, underwater weapons and other fields. A thermal battery is usually composed of a unit thermal battery, an electrical interface and a mechanical interface. The electric stack is the core component of a unit thermal battery. Whether it can output electric energy normally is the key to the normal operation of the thermal battery. Usually, multiple single batteries are connected in series and parallel. Composition, the reaction of the positive and negative poles of the single cells in the stack makes the electrons move in a directional way, and the elec...

AI Technical Summary

Problems solved by technology

By searching domestic and foreign patents and documents, Chinese patent CN 104701483A discloses a thermal battery drain strip insulation protection method, which achieves insulation protection by adding a layer of artificial mica and a layer of asbestos paper at the root of the lead-out wire. The insulation resistance of this method is Generally, asbestos paper produces a large amount of gas and needs to be burned at 500°C before use, and asbestos paper is a strong carcinogen and is not environmentally friendly

At the same time, this method does not realize the all-round insulation protection of the lead-out wires and the stack, and the lead-out wires may deviate from the lap and connect to the single battery without an insulating protective layer under mechanical environmental conditions such as large centrifugal force.

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