Have you ever faced the predicament of your car's wireless charger 'overheating' and underperforming? Picture this: your phone is charging as you navigate using the wireless charging pad, only to overheat swiftly, potentially causing screen lag and reduced charging efficiency. Has this scenario ever played out for you?

High-power wireless chargers in vehicles are prone to overheating due to electromagnetic induction, a situation exacerbated by the harsh conditions inside the car. This can lead to slower charging speeds and device wear. Consequently, the industry's focus has gradually shifted from 'power enhancement' to ensuring stability and safety in extreme environments.

An Automotive-Grade Cooling Solution Starts with Adapting to Vehicle Scenarios

Design standards for typical consumer-grade fans fall short in fully adapting to extreme vehicle environments. Compared to automotive-grade products, they exhibit differences in lifespan and stability. Solutions tailored to vehicle scenarios must be developed based on the underlying principles of 'automotive-grade' design.

● Extreme Temperature Range: Vehicle interiors can range from -30°C in northern winters to over 70°C after sun exposure in southern summers.

● Continuous Vibration Environment: Long-term driving vibrations impose high demands on the reliability of internal components.

● Frequent Voltage Fluctuations: Power fluctuations caused by vehicle start-stop cycles and electrical device switching are common occurrences.

● Extremely Limited Space: The central console area is highly coveted, featuring complex air duct designs and limited cooling space.

More Than Just a Cooling Fan: An Intelligent Thermal Management Solution for Vehicles

Guangdong Sifang Fengxin Electromechanical Co., Ltd. (formerly 'Guangdong Fengxin Motor Co., Ltd.', hereinafter referred to as 'Sifang Fengxin') was established in 2018 as a wholly-owned subsidiary of Sifang Optoelectronics Co., Ltd. (Stock code: 688665.SH). It is a high-tech enterprise dedicated to the research, development, production, and sales of cooling systems. Leveraging its parent company's nearly decade-long technological expertise in automotive electronic sensors, Sifang Fengxin has developed automotive-grade intelligent cooling fans specifically for high-power vehicle wireless chargers.

1. Low-Noise, Efficient Cooling: Balancing User Experience and Cooling Effectiveness

Fluid Dynamics Simulation Design: Achieves an efficient balance between high air volume and high static pressure, effectively 'pressing' air into the complex and compact air ducts within the wireless charger to target heat-generating areas.

Dynamic Noise Control During Operation: Under normal driving conditions, the noise level remains lower than the vehicle's background operational noise.

2. Wide Scenario Adaptability: Handling Complex Environments with Ease

Wide Temperature Range: Operates within a temperature range of -40°C to 85°C, accommodating both frigid winters and scorching summers.

Wide Voltage Range: Supports a broad voltage input range of 4.0V to 5.5V, adapting to vehicle power fluctuations and matching various vehicle models and common driving conditions.

3. Lifespan Matching Vehicle Cycles: Reducing the Risk of Mid-Journey Failures

Long Lifespan: Utilizes hydraulic bearings with a design lifespan of 50,000 hours, meeting automotive-grade testing standards.

Reliability Support: Automotive-Grade Manufacturing and Verification Standards

Sifang Fengxin extends the stringent quality control system employed by its parent company in automotive sensors to the entire production process of cooling fans, ensuring comprehensive product reliability.

● Simulation-Driven Design: Enhances product performance and noise characteristics through fluid and electromagnetic simulations.

● Precision Manufacturing Processes: From integrated injection molding and dynamic balance calibration of fan blades to automated winding and welding of stator rotors, key processes achieve automation and high-precision control.

● Rigorous Online Testing: Fans undergo online testing for airtightness and performance parameters (rotational speed, current, noise) upon completion, eliminating non-conforming products. Testing standards align with automotive-grade requirements.

● Automotive-Grade Reliability Verification: Bulk product designs undergo extreme environment tests, including high-temperature and high-humidity storage, mechanical vibration, impact testing, and EMC electromagnetic compatibility testing.

Cooling Domain Upgrade: From Parameter Competition to User Experience Optimization

The core user experience of vehicle wireless chargers hinges on stable power output in real-world scenarios. A high-quality cooling solution is vital support, enabling better implementation of fast-charging functionality for mobile phones in vehicles. Sifang Fengxin integrates automotive-grade cooling solutions into intelligent cockpit design, mitigating charging overheating and efficiency decline in extreme environments, providing users with more reliable energy replenishment.