| Market Overview & Technical Evolution
As the EV market transitions into the megawatt and ultra-fast charging era (480kW–600kW+), all-liquid cooling has become the absolute gold standard for thermal management.
To achieve shorter charging times, the industry operates on two fronts:
1. Increasing output power (requiring power module liquid cooling)
2. Boosting current (requiring charging cable/gun liquid cooling).
As the “heart” of the coolant loop, the reliability and performance of the liquid cooling pump directly determine the uptime and safety of the entire charging infrastructure.
Ultra Fast Charging Station 600kW
| Market Pain Points & TOPSFLO Pump Soution
EV Charger Liquid Cooling Pump Solutions – For Power Module
The Pain Points: Supercharging piles stack multiple AC/DC or DC/DC power modules, creating complex matrices that demand high flow rates and high lift to ensure uniform heat dissipation and prevent localized thermal runaway. Additionally, with sensitive smart management and communication systems onboard, the pump must deliver flawless Electromagnetic Compatibility (EMC) to prevent system interference.
EV Charger Liquid Cooling For Power Module
TOPSFLO Solution (TA60E / TA70E / TA90E Centrifugal Pumps):
High-Efficiency Flow: Powered by advanced 3D fluid and motor simulation, these pumps deliver a maximum flow rate of up to 120 L/min at minimal power consumption, ensuring rapid cooling and zero overheating risks.
Smart Temperature Control: Featuring -40°C low-temperature and PWM intelligent speed regulation, the pumps automatically adjust motor torque based on coolant viscosity changes in extreme cold climates.
Automotive-Grade EMC: Engineered with automotive-grade electronics, our pumps comply with strict global EMC standards, safeguarding your control boards against electromagnetic interference (EMI).
| TA60E TA70E Specifications | ||||||
| Model | Code | Max Flow
(L/Min) |
Rated Voltage
(VDC) |
Rated Current
(A) |
Max Head
(M) |
Rated Power
(W) |
| TA60E | TA60E-R24-3709 | 37 | 24 | 2.5 | 8.5 | 60 |
| TA60E-B24-3521 | 35 | 24 | 3.6 | 21 | 86.5 | |
| TA70E | TA70E-A24-4030 | 42 | 24 | 6.25 | 30 | 150 |
| TA90E | TA70E-A48-12035 | 120 | 48 | 7.3 | 36 | 360 |
TOPSFLO Model Selection Recommendations
EV Charger Liquid Cooling Pump Solutions – For Cable
The Pain Points: To keep liquid-cooled cables lightweight and flexible, internal cooling channels are designed to be “long and narrow,” introducing extreme system resistance (high back-pressure). Furthermore, when using dielectric oil (such as silicone oil) or glycol-water mixtures, the fluid viscosity spikes exponentially at sub-zero temperatures, causing conventional pumps to stall or fail to prime.
EV Charger Liquid Cooling For cable
TOPSFLO Solution (TA70E Centrifugal Pumps+TMG317 MG323 Gear Pump)：
1) Cable Liquid cooling for coolant ( up to 400A )
Depending on the cable length and diameter, the resistance will vary and the cooling solution will be different. The smaller the cable diameter, the higher the resistance, and the longer the cable, the higher the resistance.
For low resistance, it is recommended to consider TOPSFLO centrifugal pump TA60E-B24-3521，TA70E-A24-4030
For high resistance, it is recommended to consider TOPSFLO gear pump TMG213, MG323
2) Cable Liquid cooling for dimethyl silicone oil (over 400A)
For high current cables of more than 400A, silicone oil is usually chosen as the cooling medium, which has relatively higher resistance. For this kind of high resistance cable cooling application, TOPSFLO newly developed a high pressure gear pump – TMG317, MG323, the maximum pressure up to 14 bar, can meet >600A cable cooling of charging connector.
| Gear pump Specifications | |||||
| Model | Max Pressure
(Bar) |
Flow
(ml/min) |
Max Power
(W) |
Voltage
(V) |
Inlet/Outlet |
| MG213XK/DC24WI | 7 | 300-3500 | 70 | 24 | G1/8″ |
| TMG317XK/DC24DM | 8 | 6000 | 150 | 24 | G1/4″ |
|
MG323XK/DC24WI
|
8 | 9000 | 200 | 24 | G1/4″ |
TOPSFLO Model Selection Recommendations
| Industry Pain Point | TOPSFLO Key Value Proposition | Customer Value |
| Difficult cold start at low temperatures | Extreme low-temperature cold-start capability, with customization available according to operating conditions | Solves low-temperature startup challenges with high-viscosity silicone oil / cooling oil |
| High-pressure and high-flow requirements | High-pressure, high-flow output, suitable for 1500 A / 600 kW ultra-fast charging cables | Meets the rapid heat dissipation requirements of high-power charging cables |
| Electrical safety risks caused by coolant leakage | Magnetic-drive technology + dual anti-leakage sealing design | Reduces electrical safety risks caused by coolant leakage |
| Long-term high-temperature corrosion and seal degradation caused by silicone oil | Silicone-oil compatibility + PTFE sealing, with temperature resistance up to 90°C | Enhances long-term reliability under complex media and high-temperature operating conditions |
| High durability requirements for continuous operation of charging stations | Over 30,000 hours of service life, comparable to imported pumps | Reduces maintenance frequency and total lifecycle costs |
| Intelligent thermal management requirements | Wide-range PWM speed control, customizable down to 10% speed | Enables low-temperature speed reduction and on-demand flow control, reducing energy consumption |
| High cost, long lead times, and complex certification requirements |
1. Flexible customization according to customer operating conditions, with fast project response, shorter lead times, and competitive pricing. | Shortens product development cycles, reduces procurement costs, and accelerates project implementation |
| 2. UL certification is currently in progress,and we have the capability to meet UL certification requirements. |
| Conclusion
In high-power liquid-cooled charging piles, the charging cable current can reach 400A~600A+, generating a lot of heat. Due to weight restrictions, liquid-cooled cable are usually thinner and longer, resulting in greater resistance to liquid delivery, so liquid cooling systems are widely used. TOPSFLO customizes EV charger cable liquid cooling pumps for high-current gun lines, which can deliver media with a viscosity range of 0.220000cps to meet cooling needs under different working conditions.
In order to meet the needs of cold-plate liquid-cooled servers, Topsflo Pump has specially designed a water pump with a unique flat design for them, which can better solve the problems currently encountered by server manufacturers:
| Market Overview As power generation equipment and backup power supply, fuel cells can be widely used in transportati…
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Max Flow：120L/MIN
Max Head：36M
Max Flow：24L/MIN
Max Head：11M
Max Flow：6L/Min
Max Pressure：6Bar
Max Flow：35L/MIN
Max Head：21M
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