The VCU (Vehicle Control Unit) is the center of energy management and torque coordination for battery electric vehicles. It plays a key role in normal driving, launch control, driver interaction, regenerative braking, network management, thermal management, fault diagnostics, vehicle status monitoring and display, and overspeed protection, and is the core component of the EV vehicle control system. The VCU is the core device that determines the drivability, safety, energy consumption and dynamic performance of battery electric vehicles.

Hybrid electric vehicles are one of the long-term technical approaches for reducing environmental pollution and energy consumption in the automotive industry. The hybrid control unit (HCU) is a key component of hybrid electric vehicles; the core of a hybrid electric vehicle is its hybrid system, whose performance directly determines the overall vehicle performance. Hybrid powertrains, classified by power transmission path, can be series, parallel or series-parallel.

Based on the RapidECU all-domain electronic control development platform, this solution addresses industry pain points such as inaccurate traction battery voltage/current/temperature acquisition, large SOC/SOH estimation errors, inefficient balancing control, difficult high-voltage safety management and poor cell consistency, delivering an integrated Battery Management System (BMS) solution. The solution adopts a distributed architecture of a main-control BMU plus acquisition CSCs, covering the full workflow of cell monitoring, high-voltage insulation detection, charge/discharge power limiting, fault protection and thermal-linkage control. Paired with a full set of proprietary tools — ECUCoder automatic code generation, MeCa calibration software and the SimCar battery-dedicated HIL bench — it supports the AUTOSAR standard and ISO 26262 functional safety, adapts to various battery packs including LFP, NMC and hydrogen energy storage, and covers passenger vehicles, commercial vehicles, construction machinery and energy storage equipment. One hardware platform serves both prototyping and mass production, effectively shortening development cycles and improving battery service life and vehicle high-voltage safety.

The motor control unit (MCU) actively controls the motor to operate according to the set control mode (speed / torque) and control state (drive / generation). In electric vehicles, the MCU converts the electrical energy stored in the traction battery into the energy required by the drive motor based on commands from the vehicle control unit (VCU) or by directly acquiring gear, accelerator and brake commands, thereby realizing vehicle start, forward, reverse, roll-away prevention and energy recovery. The MCU is one of the key components of electric vehicles.

The thermal management system (TMS) ensures the safest possible battery operation and improves battery efficiency by properly managing the temperatures of the drive motor system, traction battery and passenger cabin. The thermal management systems of new-energy vehicles differ significantly from those of conventional internal combustion engine vehicles: battery packs on new-energy vehicles are often temperature-controlled via air conditioning, so the thermal management system must consider not only the cooling of battery packs, power electronics and motors and the heating of battery packs in low-temperature environments, but also the coupled effects with air conditioning and the passenger cabin.

Based on Huahai Technology's RapidECU all-domain electronic control development platform, this solution targets the special powertrain architecture of range-extender vehicles, where the engine generates electricity and the electric motor drives the vehicle. It addresses industry pain points such as jerky mode switching in traditional range-extender systems, low generation efficiency, high-speed power fade, confused battery charge/discharge logic, strong NVH vibration and difficult multi-component coupled control, delivering an integrated, dedicated range extender control unit solution. The solution core implements range extender start/stop control, dynamic generation power regulation, optimal engine operating-point calibration, battery charging protection, vehicle torque coordination and global energy-consumption optimization, perfectly fitting the range-extender logic of oil generating electricity and electricity driving the vehicle. Backed by a full proprietary toolchain — ECUCoder automatic code generation, MeCa measurement & calibration, SimCar range-extender-dedicated HIL simulation and SimCore virtual vehicle-energy simulation — it is fully compatible with MATLAB/Simulink model-based development, supports the AUTOSAR architecture and ISO 26262 functional safety system, and adapts to range-extender platforms for passenger vehicles, commercial vehicles and construction machinery. It covers the full workflow of prototyping, bench commissioning, real-vehicle calibration and mass production, effectively improving range-extender vehicle range, reducing fuel consumption, and optimizing ride comfort and system reliability.