A high-precision battery simulation model can simulate the output characteristics of the vehicle's battery pack under various driving conditions. Combined with the high-precision dynamic output of the battery emulator, it faithfully reproduces the actual operating conditions of the battery pack. The communication protocol configured via LAN enables millisecond-level dynamic response of the battery emulator, reflecting subtle voltage changes of the battery pack. The battery model can effectively test the three major functions of the BMS: SOH, SOC, and SOP.
■ High-precision battery cell voltage emulation
■ High-precision battery cell temperature emulation
■ Active/passive balancing capability
■ High-speed LAN port communication
■ Supports series/parallel combination of up to 250 cells
■ Card-based structure for easy maintenance
■ Supports combinations of different numbers of voltage and temperature channels

The voltage levels of 48V systems and electric bus battery packs are vastly different. To meet the needs of various battery pack sizes on the market, KeLiang's battery emulator can be flexibly configured. A single emulator uses modular hardware with freely configurable channel counts, and multiple emulators can be cascaded to increase the voltage level.
KeLiang provides PWM and CAN communication modules that comply with GB standards, and integrates the corresponding GB charging sequences to emulate signal interaction between the charging pile and the battery management system. It also provides an on-board charger (OBC) simulation module and a customizable communication protocol module to emulate household AC slow charging scenarios.
The BMS HIL test platform equipped with the battery emulator can automatically emulate real battery states such as resting, charging/discharging, and fault conditions, while ensuring the safety and repeatability of all tests. Using KeLiang's automated test platform to write and manage test sequences and generate test reports, the complex and voluminous testing work becomes effortless.