|  Market Basics

< 2021 China Electric Vehicle User Charging Behavior White Paper> released by the Charging Alliance shows that 99.3% of electric vehicle users prefer fast charging. And how can the charging pile realize faster charging? One is by increasing the output power (need to add module liquid cooling), the second is to increase the current (need to add gun line liquid cooling). At present, the liquid cooling system is the best solution for DC supercharging charging pile in the market, and the water pump, as an important part in the liquid cooling system, plays a key role in the cooling effect.

|  Market Pains

Charger Power Module Liquid Cooling

1. Superchargers generally consist of multiple DC:DC or AC:DC modules stacked on top of each other, and require a large flow rate to deliver coolant to each module for uniform heat dissipation;

2. Charging piles are equipped with intelligent management systems, which need to realize remote management, monitoring and data analysis, etc., and therefore cannot be subject to electromagnetic interference from other components.

Cable Liquid Cooling

1. Liquid-cooled charging cables are often thinned and lengthened to be more lightweight, thus adding a very large amount of drag to the liquid-cooled system;

2. The cable liquid cooling system generally uses glycol antifreeze or insulating oil as the medium. The viscosity of the liquid is different at different temperatures, especially the silicone oil, and the viscosity of the liquid will increase exponentially at low temperatures;

|  Solutions

Charger Power Module Cooling Solutions

1. TOPSFLO water pump TA60/TA70 series is designed to meet the needs of charging pile’s multi-power module cooling, through the motor and fluid simulation, special design of high-efficiency motor and structural solutions, while minimizing power consumption, the maximum flow rate up to 60L/min, faster and better cooling so that there is no risk of overheating in the charging post module.

2. Charging pile liquid-cooled water pump is specially designed for low-temperature startup, and PWM intelligent speed regulation function. It can withstand low temperature -40℃, and adjust the motor speed according to the different viscosity of the liquid under different temperature conditions, which can solve the technical problem of not discharging liquid under low temperature due to excessive viscosity of the liquid.

3. TOPSFLO pumps are designed with vehicle-grade electronic solutions, which can well meet the EMC specification requirements for charging piles. It will not cause interference to the electronic system of the charging pile, and at the same time, it can also resist electromagnetic interference from other equipment.