The automotive industry is undergoing a profound “four-modernization” transformation (Electrification, Intelligence, Connectivity, Shared mobility). Above the “zero-defect” quality standard, electrification places higher demands on component efficiency, power density, and EMC performance. The thermal management systems and auxiliary drive systems in New Energy Vehicles (NEVs) are seeking more efficient and reliable actuators. In many applications (like cooling fans, water pumps), traditional PMDC (brushed) motors can no longer meet the next-generation’s demands for long life (tens of thousands of hours), low noise, and intelligent control (e.g., LIN/CAN bus speed regulation). Therefore, the Brushless DC Motor (BLDC) has become the definitive technology upgrade path for actuators in the auto industry.
AKT Product Solution
AKT has a motor product line compliant with the automotive industry’s quality management systems, strategically focusing on the application of Brushless DC Motors (BLDC) in vehicles.
- High-Efficiency & Long-Life Solution:
Our automotive-grade BLDC motor series is engineered for the harsh vehicle environment (e.g., -40°C to +125°C wide temperature range, strong vibration). Its brushless design fundamentally solves the brush-wear problem of PMDC motors, allowing service life to easily exceed 20,00S0 hours. Its high efficiency (maintained across a wide speed and load range) is critical for NEVs, as it effectively reduces “parasitic losses” and helps extend vehicle range. - Precision Control & Low-Noise Solution:
In-cabin NVH (Noise, Vibration, Harshness) is a key measure of ride quality. Our BLDC motors use high-precision bearings and optimized electromagnetic designs. Paired with FOC (Field-Oriented Control) BLDC drivers, their operation is extremely quiet. More importantly, our drivers (often highly integrated PCBAs) can incorporate LIN or CAN bus interfaces, accepting commands from the vehicle’s ECU to achieve precise, closed-loop speed control (e.g., accurately adjusting fan speed based on temperature), a capability traditional PMDC motors lack. - High Torque Density Transmission Solution:
For applications needing high thrust, like electronic shifters or electric tailgate struts, our BLDC motors can be compactly integrated with high-strength planetary gearboxes. Our planetary gearboxes use high-strength alloy steel gears, offering high torque density in a minimal footprint.
Engineering & Customization Capabilities:
We offer deep co-development for our automotive clients: including following standard project development processes; customizing materials and bearings to withstand extreme temperatures and vibration; optimizing motor windings for 12V or 48V platforms; providing driver hardware designs that meet automotive-grade EMC standards; and customizing waterproof (IP67) motor housings and specialized connectors.
Typical Application Equipment Examples
- NEV Thermal Management System:
This is a core application for BLDC motors. Cooling the battery pack, motor, and electronics relies on electronic water pumps and fans. Our high-efficiency BLDC motors (available in sealed “canned” designs) are the best choice for driving e-pumps, ensuring intelligent and efficient coolant circulation. Cooling fans also use our BLDC motors; their drivers use PWM or LIN bus signals for stepless speed regulation, achieving a perfect balance between quietness and cooling efficiency. - Active Grille Shutter (AGS):
AGS is key to energy saving and thermal management in both ICE and electric vehicles. Our small BLDC motors or stepper motors, paired with planetary gearboxes, form a high-torque, high-precision actuator module. It reliably operates in the high-temperature, high-vibration engine bay to precisely control grille flap angles, optimizing aerodynamics and thermal efficiency. - Electric Tailgate / Sliding Door Struts:
High-end vehicles require smooth, quiet power operation for tailgates and sliding doors. Our BLDC motor + planetary gearbox + lead screw integrated strut module, combined with a driver’s S-curve velocity profile and force-sensing algorithm, delivers soft-starts/stops and intelligent anti-pinch functions, providing a premium experience far superior to traditional PMDC solutions.
Summary
AKT, with its rigorous R&D and manufacturing capabilities, provides future-oriented BLDC motor solutions for the automotive industry. Our project teams follow development processes like APQP and can cooperate deeply with Tier 1 suppliers and OEMs from the design phase, delivering customized automotive motor and driver solutions that fully meet performance, lifespan, EMC, NVH, and environmental targets.