Measurement device and method for measuring current calibration coefficient, and current detection device

A measurement device for measuring a current calibration coefficient, comprising

• a host computer;
• and
• a current source,
• wherein the host compute is configured to:
• acquire current calibration coefficients, wherein the current calibration coefficients comprises a current calibration coefficient at a temperature T1 and a current calibration coefficient at a temperature T2, wherein the T1 is a reference temperature of a resistance-temperature characteristic curve of a shunt of a current detection device, and the T2 is any one temperature other than the T1 within an operation temperature range of the shunt;
• and
• transmit the current calibration coefficients to the current detection device, wherein the current detection device is used for performing a detection of a current in a current circuit requiring current detection;
• wherein the current calibration coefficients are acquired by:
• controlling the current source to output a first current with a first specified current value to the current detection device when ambient temperature of the current detection device is at the T1,
• calculating, according to the first specified current value and a first detected current value detected by the current detection device in the current circuit, a current calibration coefficient at the T1, and
• determining, according to the current calibration coefficient at the T1 and the resistance-temperature characteristic curve of the shunt, the current calibration coefficient at the T2.