Patent ID: 8751176

Claim:
An apparatus for monitoring battery voltage and temperature comprising a host controller and acquisition boards, characterized in the following: the acquisition board for each battery pack includes a voltage acquisition module, a temperature acquisition module, a host control chip MCU, an A/D convertor module, an opto-isolator module, a CAN bus communication module and two external connection ports CN 1 , CN 2 ; wherein the input end of the A/D convertor module is connected with the output ends of the voltage acquisition module and the temperature acquisition module; the output end of the A/D convertor module is connected with the opto-isolator module via a SPI bus; a I/O port of the SPI bus module in the host control chip MCU is connected with the opto-isolator module; the host control chip MCU is connected with the CAN bus communication module on the host controller via the CAN bus communication module; the acquisition boards are connected with one another in turn with connection port CN 1 of one acquisition board being connected with connection port CN 2 of the next acquisition board via a socket piece; and the power supply of the host controller powers the host control chip MCU on each acquisition board via the connection ports of the acquisition board; both the connection ports CN 1 and CN 2 on the acquisition board are 6-pin ports, one pin as power supply line, two pins as grounding line, two pins as CAN bus and one pin as I/O port of the host control chip MCU on the acquisition board.