The invention relates to a charging pile high-voltage sampling calibration circuit, a charging pile high-voltage sampling calibration method and electronic equipment. The circuit comprises a high-voltage outer side sampling sub-circuit which collects high-voltage outer side voltage; the high-voltage inner side sampling sub-circuit collects high-voltage inner side voltage; the reference voltage generating circuit generates reference voltages of different voltages. The first signal conditioning sub-circuit generates a first calibration coefficient according to the high-voltage outside voltage and the reference voltage; the second signal conditioning sub-circuit and the third signal conditioning sub-circuit generate a second calibration coefficient according to the high-voltage inner side voltage and the reference voltage; the processing sub-circuit updates the initial calibration parameter according to the first calibration coefficient to obtain a high-voltage outer side calibration parameter, and calibrates the outer side voltage in combination with the outer side display voltage and the high-voltage outer side voltage; and updating the initial calibration parameter according to the second calibration coefficient to obtain a high-voltage inner side calibration parameter, and calibrating the inner side voltage according to the high-voltage inner side calibration parameter, the inner side display voltage and the high-voltage inner side voltage. Therefore, the measurement error of the charging pile is calibrated automatically, and the calibration cost is low.
本申请涉及一种充电桩高压采样校准电路、方法及电子设备,电路包括:高压外侧采样子电路采集高压外侧电压;高压内侧采样子电路采集高压内侧电压;参考电压产生电路产生不同电压的参考电压;第一信号调理子电路根据高压外侧电压和参考电压生成第一校准系数;第二、三信号调理子电路均根据高压内侧电压和参考电压生成第二校准系数;处理子电路根据第一校准系数更新初始校准参数得到高压外侧校准参数,并结合外侧显示电压和高压外侧电压对外侧的电压进行校准;根据第二校准系数更新初始校准参数得到高压内侧校准参数,根据高压内侧校准参数、内侧显示电压和高压内侧电压对内侧的电压进行校准。以此自动对充电桩的测量误差进行校准且校准成本较低。
Charging pile high-voltage sampling calibration circuit and method and electronic equipment
充电桩高压采样校准电路、方法及电子设备
2023-03-24
Patent
Electronic Resource
Chinese
IPC: | G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / H03M Codieren, Decodieren oder Codeumsetzung allgemein , CODING, DECODING OR CODE CONVERSION, IN GENERAL |
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