Low power dissipation high thermal conductivity conductors and circuit breakers

Abstract

The invention provides a low-power consumption high-thermal conductivity conductor, comprising an electric core and a coating layer covering the surface of the electric core, wherein the electric coreis made of copper-graphene alloy material, and the coating layer is a graphene-copper composite radiating film. By using a copper-graphene alloy material with high electrical conductivity as the electric core and coating a layer of graphene-copper composite radiating film with high thermal conductivity on the surface of the electric core, the conductor has the characteristics of low power consumption and high thermal conductivity, and the use amount of precious metals such as copper and silver is reduced, which reduces the cost, and is especially suitable for use environments where temperature rise is strictly required in a closed or unventilated environment. The invention also provides a circuit breaker, comprising a circuit breaker body, an inner conductor of the circuit breaker, and anexternal copper bar connected to the inner conductor of the circuit breaker, wherein the inner conductor of the circuit breaker and the external copper bus are made of the low-power consumption and high-thermal conductivity conductor. The circuit breaker provided by the invention has the characteristics of low power consumption, low cost and high heat conductivity.

Description

technical field [0001] The invention relates to the technical field of low-voltage electrical appliances, in particular to a conductor with low power consumption and high thermal conductivity and a circuit breaker. Background technique [0002] As an important device in the field of power transmission, power distribution, and power conversion technology, the circuit breaker's conductor Joule heat causes the temperature rise of the contacts and other parts to be too high during operation, resulting in a reduction in the electrical performance and service life of the product, or even damage. Fire, causing loss of property and human life. At the same time, the circuit breaker is subjected to the impact of instantaneous high current in the event of a short circuit, and the contacts may oxidize or even fall off due to short-term high temperature, affecting the electrical performance and safe use of the product. [0003] The existing circuit breaker is installed in a relatively c...

AI Technical Summary

Problems solved by technology

[0002] As an important device in the field of power transmission, power distribution, and power conversion technology, circuit breakers, Joule heat of circuit breaker conductors lead to excessive temperature rise of contacts and other parts during work, resulting in reduced electrical performance and service life of products, and even damage. Fire, causing loss of property and human life

At the same time, the circuit breaker is subjected to the impact of instantaneous high current in the event of a short circuit, and the contacts may oxidize or even fall off due to short-term high temperature, affecting the electrical performance and safe use of the product

[0003] The existing circuit breaker is installed in a relatively closed environment such as a switch cabinet. Its circuit resistance is large and power consumption is high. The Joule heat of the conductor of the circuit breaker is transmitted to the external busbar in the cabinet through the terminal, and is transmitted through the heat dissipation vent of the cabinet. In the external environment, the internal contacts of the circuit breaker are mainly silver alloy, and the busbars and external busbars of the cabinet are mainly copper-plated silver, which has a high cost; Oxidation or even falling off due to short-term high temperature affects the safe use of the product

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