Electric energy metering device

The utility model relates to an electric energy metering device, aiming at providing the electric energy metering device which has the advantages of simple structure and low manufacturing and maintenance costs. The electric energy metering device comprises a metering chip, and a control chip and a power supply module which are connected with the metering chip, wherein the power supply module supplies power to the metering chip and the control chip, and the metering chip comprises a multi-channel voltage-current sampling and analog-to-digital conversion module, an electrical parameter metering module, a pulse generation module, a reference voltage generation module, a clock control module, a power supply management module, a serial communication interface module and a program data memory module. Since most metering function modules are integrated into one metering chip, the circuit of the entire electric energy metering device can be simplified, the manufacturing and maintenance costs are reduced and the development cycle is shortened; since a memory in the metering chip is a FLASH erasable memory, the installation, the debugging and the use of a user can be facilitated; and since two communication modes are adopted, so the stability and the reliability of a system are increased.