High-voltage batteries play a central role in the development of electric vehicles. Temperature management is one of the key factors for their optimal function, which is why temperature measurements are carried out under different conditions during development and pre-series production. The following example shows how such a temperature measurement can be realized in the high-voltage battery.
High-voltage battery cells require a certain temperature range to function optimally. Temperatures that are too low or too high can result in lower performance and faster aging. In order to keep the battery cells in the optimum temperature range, the overall battery system consists next to the battery cells, out of a cooling and heating system and the battery management system (BMS) with fault management.
Temperature measurements within the HV battery for optimum design of the cooling and heating system.
The design of the BMS must be verified under changing conditions. This requires temperature measurements in the battery during various operating conditions, both on the test bench and in driving operation. The measurement technology must therefore be high-voltage safe and usable in the test bench and road test.
In addition to the ensured high-voltage safety, the CSM measurement technology used can be installed in such a space-saving manner that it can be used both on the test bench and in road tests. This saves time for any necessary conversions. In addition, this solution can be easily extended by additional CAN or EtherCAT-based measurement modules (e.g. parallel moisture measurement in the high-voltage battery) by using an XCP Gateway pro.
Safe temperature measurements with thermocouples on high-voltage components: the high-voltage-safe temperature measurement modules are specifically designed for the reliable acquisition of temperatures in electric and hybrid vehicles.
CSM's measurement modules HV PT MiniModule (HV PTMM) and the HV PT test bench module (HV PT-TBM) allow precise temperature measurements with PT100 and PT1000 resistance sensors in a high-voltage environment.
XCP-Gateway is the interface between the data acquisition software (e. g. vMeasure, CANape®, INCA®, Vision® ...) and the EtherCAT® measurement modules from CSM. It includes an EtherCAT® master and an XCP-on-Ethernet slave.
The CSM HV DTemp measurement system is designed for the digital and precise measurement of up to 512 temperature measurement points via a single cable connection to the HV DTemp Central Unit.
Swift configuration of measurement chains: CSMconfig is the reliable configuration software for all CAN and EtherCAT® based measurement modules from CSM. The clearly arranged and easy-to-use user interface allows an easy setting of all measurement parameters. This helps speeding up the measurement setup considerably.
vMeasure, developed by Vector Informatik, is an easy-to-use software tool for the acquisition and analysis of measurement data that can be used in combination with all CAN- and EtherCAT®-based CSM measurement modules. CSMconfig was integrated directly to ensure swift configuration.