Voltage measurement system

A voltage measurement system that measures a voltage of a battery cell, the voltage measurement system comprising:

• a first reference signal transmission device including a first master oscillator that generates a first master clock signal and a first reference signal generation circuit that generates a first reference signal based on the first master clock signal;
• and
• a first voltage measurement device including a first slave oscillator that generates a first clock signal, a first correction circuit that corrects an oscillation frequency of the first slave oscillator based on the first reference signal, a first voltage measurement circuit, and a first measurement control circuit that controls the first voltage measurement circuit based on the first clock signal, wherein
• the voltage measurement system includes:
• a normal mode in which a command signal is transmitted and received between the first reference signal transmission device and the first voltage measurement device;
• and
• a correction mode in which the first reference signal is transmitted from the first reference signal transmission device to the first voltage measurement device, and the oscillation frequency of the first slave oscillator is synchronized with an oscillation frequency of the first master oscillator using the first reference signal.