TOPSFLO provides the core component of the liquid cooling system – the water pump – for the home energy storage project of a globally renowned electric vehicle and energy company. In initial communications, TOPSFLO learned of the customer’s stringent requirements for water pump sealing, as leakage or electronic failure could pose major risks to the entire system. After 2.5 years of extensive testing and comparing suppliers from South Korea, Japan, China, and other countries, the customer ultimately selected TOPSFLO’s Energy Storage pumps. TOPSFLO optimized the product in four key areas: parameters, structural sealing design, low-temperature resistance, and intelligent design, achieving an ideal match with customer requirements.

On December 4, 2012, a TOPSFLO sales engineer received an email from Peter, a senior mechanical engineer in the United States, looking for a suitable cooling water pump for his company’s new home energy storage product. As a global leader in EV and energy solutions, this company drives the worldwide energy transition with electric vehicles, solar products, and integrated renewable solutions for homes and businesses.

Communication Stage: Sealing Performance as the Primary Concern

To gain a deep understanding of the home energy storage characteristics and requirements, the TOPSFLO team engaged in in-depth discussions with the customer. Home energy storage systems store solar energy or charge during low electricity rate periods, releasing the stored power during outages or peak consumption times, and can also charge electric vehicles. This system acts as a “giant power bank” at home, helping users save money, reduce carbon emissions, and handle power outages smoothly.

However, during charging and discharging, the battery pack and inverter generate substantial heat, requiring a cooling system for temperature regulation. While most systems in the market use natural or air cooling, this method often results in a bulkier product with uneven cooling performance. Though technically challenging, liquid cooling provides the best cooling effect, making it ideal for high-standard home energy storage systems.

Testing Phase: 2.5 Years of Verification and Comparison

As home energy storage was an advanced concept at that time, there were no similar market applications to reference. The customer spent 2.5 years rigorously testing and backup energy storage pump options from suppliers in South Korea, Japan, China, and other regions, ultimately choosing TOPSFLO.

TOPSFLO met customer requirements through optimization in these four areas:

1. Parameter Optimization: After extensive sample testing and motor adjustment, the TL-B10 energy storage pump (parameters: 12V voltage, 10L/min flow rate, 6m head) achieved optimal performance for home energy storage systems.
2. Structural Sealing Design: To ensure reliable sealing, a multi-barbed connection was developed to tightly seal the water pump interface, minimizing potential leakage.
3. Low-Temperature Resistance: Utilizing renowned international brand materials, the water cooling pump can withstand -40°C, meeting the needs of outdoor installations in extremely cold conditions in Europe and the U.S.
4. Intelligent Design: A 5V smart speed control and feedback function were customized, enabling real-time intelligent speed regulation based on battery temperature needs, enhancing system stability, prolonging service life, and improving energy efficiency.

On June 9, 2015, the product entered mass production, with an initial order of 5,000 units.

Cooperation Stage: Strict Factory Inspections Three Times a Year

Since the first audit of TOPSFLO’s factory in April 2015, the customer has conducted at least three annual quality inspections covering electronic control, quality management, and testing equipment, ensuring compliance with high standards. TOPSFLO’s factory has earned dual certifications from German TÜV for ISO9001 and IATF 16949, enabling small-batch traceability to ensure quality consistency throughout production.

In terms of equipment, TOPSFLO’s R&D team independently developed high-precision testing devices, including air tightness detectors and automatic glue filling machines. Moving from manual or semi-automatic operations to current national laboratory standards, TOPSFLO’s advancements have exceeded customer expectations.

This successful collaboration not only demonstrates improvements in product quality but also reflects TOPSFLO’s commitment to continuous technological innovation and high customer satisfaction. TOPSFLO remains dedicated to advancing product quality, technological innovation, and service for ongoing excellence.