Fecha de publicación: 11/06/2021 Fuente: Wipo Olive Table The invention discloses a calibration method of a current sensor, which comprises the following steps of: 1) extracting a small batch of current sensors, and calibrating each current sensor under full range and full temperature; (2) establishing a table in which the abscissa is the environment temperature and the ordinate is the measuring range current value, and filling the table corresponding proportionality coefficients; 3) selecting a standard reference proportionality coefficient, and associating the proportionality coefficients at different temperatures with a standard reference value; similarly, associating the proportionality coefficients under different currents with a standard reference value; 4) obtaining a temperature compensation coefficient expression and a current compensation coefficient expression of the whole batch of current sensors by adopting a least square method for the plurality of temperature compensation coefficient expressions and the current compensation coefficient expressions in the small batch of current sensors; 5) calculating the corresponding standard reference proportion coefficients of the residual batches of current sensors; and 6) completing calibration, According to the invention, temperature and current compensation is adopted, and the precision of the current sensors is improved.