US 2019/0295797 A1 · Miniature Circuit Breaker, Control Method Thereof, and Control System Thereof

Abstract

A miniature circuit breaker, a control method thereof, and a control system thereof, where the miniature circuit breaker includes a circuit breaker body and a current detection unit. The circuit breaker body and the current detection unit are located in respectively independent cavities in the circuit breaker and are electrically coupled to each other. After a current that flows from one end of the circuit breaker body flows through the current detection unit, the current flows into another end of the circuit breaker body. The current detection unit includes a voltage drop detection assembly and a signal output terminal. The voltage drop detection assembly includes a first voltage sampling point and a second voltage sampling point, where the first voltage sampling point and the second voltage sampling point are coupled to the signal output terminal.

Claims20

Dependent claims

A miniature circuit breaker;

comprising:
a current detection circuit;
and
a circuit breaker body, wherein the circuit breaker body and the current detection circuit are located in respectively independent cavities in the miniature circuit breaker and are electrically coupled to each other, wherein a first current flows from a first end of the circuit breaker body to a second end of the circuit breaker body through the current detection circuit,
wherein the current detection circuit comprises:
a signal output terminal;
and
a voltage drop detection assembly comprising a first voltage sampling point and a second voltage sampling point, wherein the first voltage sampling point and the second voltage sampling point are coupled to the signal output terminal,
wherein the signal output terminal is configured to output a voltage difference sampling value, wherein the voltage difference sampling value is a voltage difference between the first voltage sampling point and the second voltage sampling point.

6 more elements

A control system comprising:

a control device;
and
a miniature circuit breaker coupled to the control device and configured to output, using a signal output terminal, a voltage difference sampling value and a temperature sampling value to the control device, wherein the voltage difference sampling value is a voltage difference between a first voltage sampling point and a second voltage sampling point of a current detection circuit, and wherein the temperature sampling value is a temperature collected by a temperature detection element of the current detection circuit, and
wherein the control device is configured to:
obtain the voltage difference sampling value and the temperature sampling value from the miniature circuit breaker;
and
obtain, based on the voltage difference sampling value and the temperature sampling value, a first current that flows through the miniature circuit breaker.

4 more elements

A control method, implemented a control device, the control method comprising:

obtaining a voltage difference sampling value and a temperature sampling value from a signal output terminal of a circuit breaker, wherein the voltage difference sampling value is a voltage difference between a first voltage sampling point and a second voltage sampling point of a current detection circuit, and wherein the temperature sampling value is a temperature collected by a temperature detection element of the current detection circuit;
and
obtaining, based on the voltage difference sampling value and the temperature sampling value, a first current that flows through the miniature circuit breaker.

Dependencies are inferred from the claim text.

Miniature Circuit Breaker, Control Method Thereof, and Control System Thereof

Life of this patent

Miniature Circuit Breaker, Control Method Thereof, and Control System Thereof

Life of this patent

Abstract

Claims20