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Candy Jiao
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Email: nh.li@auto-parkingheater.com
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Ev Battery Thermal Management System
Electric vehicle battery system thermal management is not a single product, but an integrated and intelligent temperature control system. Its core is to keep the power battery always working in the optimal range of 20-40℃, ensuring range, lifespan, fast charging and safety.
Description
If you're looking for the ev battery thermal management system, welcome to wholesale the product from our factory. As one of the leading manufacturers and suppliers in China, we will offer you the best service and fast delivery. Now, check the quotation with our seller.
EV Battery Thermal Management System
Products Description
product key technologies
Battery Thermal Management System (BTMS)
A Battery Thermal Management System (BTMS) is a comprehensive technology system for monitoring, regulating, and controlling the temperature of a power battery pack. Its core mission is to ensure that the battery always operates within its safe and efficient optimal temperature range under any external environment, and to maintain uniform temperature across all battery cells.
Simply put, BTMS is like a "smart temperature manager" for electric vehicle batteries-it prevents the battery from overheating or freezing, keeping it in optimal operating condition at all times.
Battery Thermal Management System (BTMS)
Cooling Circuit Components:
Radiator: Dissipates heat from the coolant
Coolant Pump: Drives coolant circulation
Cooling Plate/Liquid Cooling Plate: Exchanges heat directly with the battery
Chiller (Battery Cooler): Exchanges heat between refrigerant and coolant
Multi-way Valve (Three-way/Four-way/Five-way/Six-way): Controls coolant flow direction
| Model | NFEHP3.0-3 |
|
Working environment
|
-20~55℃
|
|
Refrigerant
|
R1234yf/R134A
|
|
Cooling liquid
|
50% 50% ethylene glycol/water solution
|
|
High voltage
|
540VDC (450-720VDC) |
|
Low voltage
|
24VDC (18-32VDC)
|
|
Rated refrigeration capacity
|
4.5KW
|
|
Rated heating capacity
|
5KW
|
|
Overvoltage protection/overvoltage recovery
|
750/720V DC
|
|
Under-voltage protection/Under-voltage recovery
|
400/430V DC
|
|
Box color
|
Black |
|
Weigh
|
＜35kg
|
|
Waterproof protection level
|
IP67 |
Products principle
Refrigeration Mode
The fan and compressor are turned on. High-temperature, high-pressure refrigerant is discharged from the compressor, enters the condenser to release heat and cool down, then passes through the thermostatic expansion valve for throttling, pressure reduction, and cooling. The low-pressure, low-temperature refrigerant enters the battery cooler chiiller to exchange heat with the high-temperature coolant flowing from the battery pack. After absorbing heat, the refrigerant enters the compressor suction port, completing one refrigeration cycle. Simultaneously, the high-temperature coolant flowing from the battery pack outlet is pumped through the chiiller, cooled, and becomes low-temperature coolant that enters the battery pack inlet to cool the battery, completing one water circuit cycle.
Cooling mode is suitable for applications with high battery pack heat load.
Heating mode (optional)
Fan and compressor are off, water pump and electric heater are on. Low-temperature coolant is heated by the electric heater and then flows through the chiller into the battery pack to heat the batteries.
The heating mode is suitable for applications where the battery temperature is too low.
Self-Circulation mode
Fan and compressor are off, only the water pump is on. Coolant circulates between the thermal management unit and the battery pack, carrying away heat from the battery pack.
Self-circulation mode is suitable for applications with low battery heat load.
Products details
Operational Principle
Figure 1-1 Working principle diagram of water-cooled unit
The schematic diagram of the EHP battery thermal management system is shown in Figure1-1. Red represents the cooling cycle, and blue represents the coolant cycle. The unit has three modes: cooling mode, heating mode (optional), and self-circulation mode. The unit switches between these three modes based on parameters fed back from the battery pack BMS.
Products Application
1. New Energy Vehicles
Electric Passenger Vehicles: Ensuring range, safety, and fast charging performance
Electric Buses: Meeting stricter safety standards regarding no fire within 5 minutes
Commercial Vehicles/Logistics Vehicles: Thermal safety assurance under high-intensity operation
2. Energy Storage Systems
Commercial and Industrial Energy Storage Units: Air-cooled/liquid-cooled solutions adaptable to different scales
Grid-side Energy Storage: Precise temperature control of large-scale battery packs
3. Special Vehicles
Engineering machinery, mining vehicles, and other harsh operating conditions
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