Requirements for temperature control technology
ProNES customers expect complete system solutions from a single source. The "batterieinspektor" can be used to check the quality and functionality of batteries in electric vehicles under real conditions. For the comprehensive tests it is necessary to set different temperatures. In view of the range of functions, ProNES opted for a JULABO temperature control system.
A water-glycol mixture is used as temperature control medium and is used in the same form in the cooling circuit of the vehicles. The temperature range in the test processes is normally within a manageable range of +22.5°C to +45°C. In addition, the temperature control system must provide sufficient power at all times in order to be able to quickly and precisely compensate for dynamic temperature fluctuations. The minimum requirements for the compact temperature control system are 9 kW heating capacity and 2 kW cooling capacity, as well as a powerful pump, which meets the required pressure of approx. 2 bar.
In addition, the test bench requires suitable interfaces to the JULABO temperature control system used in order to be able to be integrated into the test processes. An RS232 or Ethernet interface for logging is required for control.
At the same time, the system requires a separate, external reservoir as a buffer for the bath fluid. If optimally designed, this ensures that the test specimens are filled and blown out smoothly.