How to Select the Right EV DC Fast charger Cooling Pump?

With China's commitment to green development and the growing adoption of new energy vehicles, the demand for efficient charging infrastructure is rapidly increasing. EV DC Fast charger systems, which offer faster charging times compared to home charging, have become a key solution. These systems can reduce charging time from several hours to just minutes, greatly enhancing convenience for users. As the industry continues to evolve, choosing the right EV DC Fast charger cooling pump becomes crucial for ensuring reliable performance and longevity. Here's a guide to selecting the best cooling pump for this emerging technology.




The principle of "fast charging" in supercharging piles aims to increase instantaneous power, boosting current delivery while maintaining a stable rated voltage. This drastically reduces charging times. However, as the current rises, so does the heat generated by the system equipment. The resulting high-density heat can accelerate the aging of charging pile components. Without effective heat dissipation, overheated charging piles can pose serious safety risks.

To address this, the most straightforward solution is to increase the thickness of the connecting cables, which helps reduce heat generation. However, this comes with the drawback of increased cable weight, making it cumbersome for users during self-service charging. Therefore, efficient cooling methods are essential to maintain system safety and performance.


Cooling Methods for Charging Systems

Cooling techniques for charging systems can be categorized into three main types:

Natural Cooling: This method utilizes natural air circulation to lower equipment temperature without additional equipment. While cost-effective, it is the least efficient, especially for high-heat-density applications like supercharging piles.

Forced Air Cooling: This method involves using fan radiators inside the equipment to dissipate heat via forced convection. Although it can handle larger heat loads, it requires more space and may introduce issues such as dust, moisture, and corrosive gases, which can affect system longevity.

Liquid Cooling: This method involves wrapping a radiator around the charging cable, with a circulating pump that circulates coolant within the radiator. Liquid cooling ensures efficient heat dissipation, as well as cleaner, more controlled cooling. It is ideal for supercharging piles, where space is limited and the heat density is extremely high.

Why Liquid Cooling is Ideal for EV Supercharging Piles

Supercharging piles are often installed in residential areas, commercial districts, and parking lots, where high traffic and dense usage lead to significant heat generation. Due to the limited heat dissipation space and high thermal energy density, natural and forced air cooling solutions are often insufficient. Liquid cooling technology is the most efficient method for heat dissipation in such conditions, offering the advantages of compact design, high heat transfer efficiency, and reliable long-term performance.

Liquid cooling is particularly suitable when forced convection and phase-change systems cannot meet heat dissipation requirements. By implementing liquid cooling, it is possible to significantly reduce the weight of the charging cable, save space, and ensure effective heat management.

Choosing the Right Liquid-Cooled Pump for Supercharging Piles

When selecting a liquid-cooled pump for supercharging piles, it's essential to first understand the specific requirements of the working environment. Supercharging piles often operate in areas with high traffic, such as residential zones and commercial parking lots, making it necessary for the cooling system to meet several key criteria:

Low Noise: The pump should operate quietly to minimize disruption in high-traffic areas.

Compact Size: Given the limited space available, the pump must be small and efficient.

No Leakage: The pump should offer reliable performance with zero leakage to ensure safety and efficiency.

High Reliability: Long-term performance is crucial for supercharging piles that experience heavy usage.

Long Service Life: Pumps with extended lifecycles help reduce maintenance costs and improve overall system reliability.

Many micro-pumps can meet these criteria, how to determine which type micro cooling pump meets requirements?




To determine the optimal performance parameters for a supercharging pile liquid cooling pump, we need to consider the specific requirements for residential and commercial installations. These systems demand strict control over both noise levels and the compactness of the equipment.

According to design standards, the pump noise should be below 60dB, and its size must be small. The system typically uses ethylene glycol or silicone oil as the cooling medium, with a flow rate range of 2-5 liters per minute and a delivery pressure of up to 6 bar.

Based on these parameters, we can focus on two pump types: gear pumps and vane pumps.

TOPSFLO's MG series micro-magnetic gear pumps offer several advantages: they are compact, lightweight, reliable, and have low wear rates, resulting in a long service life. The pumps feature static sealing without leakage, long dry running capabilities, and excellent self-priming performance. Additionally, they generate low noise and can handle a wide range of viscosities. However, the precision machining of gear pump components results in a higher price compared to vane pumps.



On the other hand, vane pumps are also volumetric pumps known for their compact structure and efficiency. They offer strong self-priming capabilities, making them suitable for transporting light oils and viscous liquids with low noise and a lower price point. However, vane pumps suffer from significant vane wear during operation, leading to the generation of fine wear particles that can clog the system and reduce both pump performance and heat exchange efficiency.

In conclusion, excluding cost considerations, gear pumps are more suitable for use as coolant delivery pumps in EV supercharging liquid cooling system due to their superior performance.

When selecting a gear pump for a supercharging pile liquid cooling system, it's important to consider not only the price but also the technology, performance, and after-sales service offered by the manufacturer.

Technology directly impacts quality, making it a key factor in a brand's competitive edge. When faced with multiple options, opting for a brand with strong technical expertise can help ensure a reliable choice.

To make a well-informed decision, it’s essential to evaluate a brand based on three factors: project experience, R&D capabilities, and the strength of its technical team.

In terms of project experience, comparing the performance characteristics of cooling pumps used in existing systems by leading research institutes and well-established companies can guide your selection.

TOPSFLO’s MG series supercharging pile liquid cooling pumps, a mature product with numerous successful market applications, can significantly reduce the need for extensive comparison testing. Specifically designed to meet the technical requirements of high-power charging piles, the TOPSFLO MG317, equipped with a DC brushless motor, is tailored for the new energy charging pile industry. This model has already been deployed in large quantities within the market and has earned recognition from many prominent companies.


When developing high-power charging piles and purchasing liquid cooling pumps for supercharging stations, it is crucial to understand the pump's performance and communicate specific technical requirements with the manufacturer in advance. Manufacturers with independent research and development capabilities can provide valuable suggestions for improving system design through technical exchanges before procurement.

Manufacturers with substantial experience and market presence in supercharging pile liquid cooling pumps can also offer practical solutions to common technical challenges based on extensive data and field experience.

When selecting pumps, it's important to evaluate the manufacturer's R&D capabilities, as those with independent technology development can provide customized solutions. If standard pumps don't fully meet the system’s requirements, manufacturers with patent portfolios and dedicated technical teams can develop tailored solutions.

TOPSFLO, with over 60 patented technologies—including 9 invention patents, 23 utility model patents, and 29 design patents—offers a wealth of expertise in pump design and manufacturing. The company is capable of customizing liquid cooling pumps to meet unique customer specifications. Furthermore, its technical team is available for pre-sales consultations, assisting clients in selecting the most suitable models. TOPSFLO also provides reliable after-sales service, ensuring support as needed.

In the purchasing process, the key consideration is whether the cooling pump meets the specific performance standards required by the equipment it will be paired with. Factors such as flow rate, pressure, viscosity, temperature tolerance, wear resistance, and service life are crucial when making a purchase decision.

The TOPSFLO MG Series magnetic gear pumps, powered by a 24V 150W DC brushless motor, offer a service life exceeding 20,000 hours. The pumps operate within a temperature range of -45°C to 60°C and can handle liquid temperatures from -45°C to 85°C. Flow rates range from 0.75 to 6L/min, and the pumps can achieve outlet pressures of up to 8 bar.

These pumps are equipped with motor protection ratings of IP55 or IP68. The motor supports both 0-5V voltage and PWM speed control signals and can operate in both forward and reverse directions. Multiple protection modes include power limiting at 150W, overtemperature protection at 100°C, polarity protection, and stall protection.

The design of the TOPSFLO MG Series liquid cooling pumps can also be customized based on system requirements, such as different inlet/outlet configurations, whether side or top-mounted, depending on layout preferences.



The pump body of the MG Series is made from durable 316L stainless steel, and the core components, including gears and bearings, are constructed from high-performance PEEK engineering plastics. The gear shaft is made from 304 stainless steel, offering exceptional hardness, temperature resistance, wear resistance, and corrosion resistance for an extended service life.

Lastly, it’s important to consider the delivery time, pre-sales consultation, and after-sales service when selecting a cooling pump. As both TOPSFLO's technical team and manufacturing facilities are located in China, the company is able to provide fast delivery and responsive customer support. From system configuration advice to installation assistance and ongoing maintenance, customers receive dedicated service throughout the entire process.