Power supply device

Abstract

A microcomputer and a detection circuit in a low power consumption mode is restarted easily and stably. A power supply device includes a battery module (10) including battery cells (1), a battery connection circuit (2) configured to detect battery information of the battery module (10) and configured to be switched to a low power consumption mode, an activation circuit (3) configured to switch the battery connection circuit (2) from the low power consumption mode to an operation mode, and an activation switch (4) configured to output a switching signal to the activation circuit (3). The battery connection circuit (2) includes a detection circuit (21) configured to detect the battery information and a microcomputer (22) configured to process the battery information detected by the detection circuit (21). The activation circuit (3) includes a first switching circuit (6A) configured to output a first activation pulse to the detection circuit (21) in response to the switching signal input from the activation switch (4), and a second switching circuit (6B) configured to output a second activation pulse having a larger pulse width than the first activation pulse to the microcomputer (22) in response to the switching signal input from the activation switch (4).

Dependencies are inferred from the claim text.