OEM Case of Battery Chillers:
For 10 years, TKT has been dedicated to designing and manufacturing battery liquid cooling systems (battery chiller/ BTMS) according to the needs of different OEM customers, including BYD, Olectra, Tata Motors, Daewoo, and Switch Mobility.
The image below shows the electric bus BTMS case study designed for the Fortune 500 company TATA. Click to read.
TKT Battery Thermal Management Advantages
Now more and more world top 500 vehicle manufacturers choose TKT BTMS system. Mainly because of us:
1. TKT battery chillers are of superior quality, having passed quality verification by Fortune 500 companies and 10 years of market testing.
2. Precise temperature control (0.5℃), lightweight, etc.
3. CAN control to prevent improper operation from damaging the battery pack.
4. Products are highly customizable; we can produce entirely according to customer specifications.
Battery Thermal Management Solutions
Battery Thermal Management Important Partners
Battery Thermal Management Overview
Battery thermal management system keep electric vehicle battery pack temperatures within the right range to maintain their longer driving range and extend battery life. We also call it BTMS Battery or Battery Chiller or Battery Pack Cooling System.
TKT Busthermo specializes in developing thermal management systems for electric bus batteries, electric truck batteries, electric boat batteries and electric heavy equipment batteries. With a cooling/heating capacity of 3KW-10KW, they keep the temperature of the power battery pack in the optimal range by means of coolant cooling and PTC heating. This allows electric vehicles to achieve longer range and service life.
Battery Pack Cooling System Related News
“Fortune 500 TATA Truck Battery Thermal Management System Project” Click to read
“Battery Thermal Management Focus On Truck & Bus ect. – Mature Advanced Solutions” Click to read (highly recommended)
“Battery thermal management customization solutions and common customization directions” Click to read
Battery Thermal Management Basic Knowledge
What is battery thermal management system?
Battery thermal management system (BTMS) is a closed -loop temperature control system composed of heat -conducting medium, measurement and control unit, and temperature control equipment. It makes power battery work within the appropriate temperature range to maintain its best use state to ensure the performance and life of the battery system.
A review on battery thermal management in electric vehicle application (importance)
Power battery is the only source of energy for electric vehicles and an important indicator affecting the performance of electric vehicles. It will accompany a certain heat during the charging and discharge process, which will cause the temperature to rise, and the increase in temperature will affect many working characteristics parameters of the battery, such as internal resistance, voltage, SOC, available capacity, charging and discharge efficiency, and battery life.
The problem of power battery thermal effects will affect the performance and cycle life of the vehicle. Therefore, the battery thermal management is very important for the performance and life of the battery and the mileage of the vehicle.
What are the different types of battery thermal management systems (BTMS) ?
At present, it is mainly divided into air cooling, liquid cooling, phase change material cooling and immersion cooling. For EV battery cooling system, liquid cooling is the most common and stable solution.
Battery liquid cooling: The battery exchanges heat with the coolant through the cooling plate. The cooled or heated coolant is sent into the heat exchanger by a water pump, and heat exchange and shunting are performed inside it, thus forming a continuous and stable liquid cooling system for battery. A virtuous cycle.
Battery air cooling: Mainly utilizes the working principle of air convection to circulate the air in the battery compartment. The circulating air removes heat from the battery, thereby lowering the temperature of the battery. The disadvantage is that the cooling efficiency is relatively low, especially in high temperature environments.
Battery phase change material (PCM) cooling: PCM materials are mainly used to transform between solid and liquid at specific ambient temperatures, thereby realizing the heat dissipation and heating functions of the battery. The disadvantages are relatively low cooling efficiency and the need for regular replacement of phase change materials.
Battery immersion cooling: By placing the battery directly in a special coolant, the convection and conduction effects of the liquid are used to quickly transfer the heat generated by the battery to the coolant, thereby achieving the cooling effect of the battery. The disadvantages are higher requirements for coolant and high subsequent maintenance costs.
How does battery thermal management work?
The battery liquid cooling system consists of a compressor, condenser, expansion valve, plate heat exchanger, electronic water pump, PTC liquid heater, expansion tank, and electrical control. When the battery needs to be cooled for operation, the battery exchanges heat with the coolant through the cooling plate, and the heated coolant is sent into the heat exchanger by the electronic water pump. The refrigerant is introduced into one side of the heat exchanger and the coolant is introduced into the other side. The two exchange heat in the heat exchanger, so that the heat is taken away by the refrigerant. The cold coolant flows out of the heat exchanger and then flows into the battery. The system forms a cycle; when the battery is at low temperature and needs to be heated, the refrigeration circuit is closed and the PTC liquid heater is turned on. The coolant is heated and sent into the battery, and the battery is heated through the cooling plate. The battery thermal management controls the internal temperature of the battery by controlling the on and off of the refrigeration circuit and the PTC liquid heater.
What is the difference between BMS and BTMS?
Simply put, BMS is a battery management system, which includes a wider range. BTMS is the battery thermal management system and is part of the BMS. The automated operation of BTMS requires instructions from BMS. It can be understood as the relationship between the brain and the limbs.
Other Commonly Used Expressions
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