Shells for H Batteries

The heart of electric vehicles is the built-in high-voltage battery. Thermal influences have enormous effects on their service life, capacity and in particular their operational safety. In order to prevent damage caused by excessive temperatures, large quantities of heat-conductive casting media are used.

The "Key Performance Indicators" of high-voltage batteries from the user's point of view are their capacity, the range with a battery charge and the life of the energy storage. Thermal influences have very strong effects on these performance data as well as on operational safety. For normal operation of an e-vehicle operating temperatures of about 20 - 40 ° C are optimal. Excessively high temperatures can cause internal short circuits and, as a consequence, severe to irreparable damage to the high-voltage battery and other vehicle components. In order to prevent this, in addition to the built-in cooling system, large amounts of thermal compound are used. About five to ten liters of these highly viscous and highly abrasive materials are filled between the battery modules and the enclosing housing per vehicle. They ensure reliable heat dissipation and thus help to prevent potential defects due to overheating and to achieve a permanently high battery performance.

Due to the high viscosity and high proportion of abrasive fillers, however, the application of heat transfer media places great demands on the liquid filling technology used. In addition, the application of materials can prove to be a bottleneck, especially in fully automated production processes, since these media often allow only comparatively low dispensing speeds. The company Scheugenpflug has developed a new dosing solution especially for the casting of high-voltage batteries. According to the manufacturer, the system also allows dosing speeds of up to 80 ml / s for highly abrasive heat-conducting materials. This equates to the application of one liter of thermal interface material in less than 15 seconds.

By simultaneous coupling of two conveyor systems with the dosing it is possible to realize a redundant system operation without downtime. Due to the high viscosity and high proportion of abrasive fillers, the application of materials can prove to be a bottleneck, especially in fully automated production processes, since these media often allow only comparatively low dispensing speeds.

The company Scheugenpflug has developed a new dosing solution especially for the casting of high-voltage batteries. According to the manufacturer, the system also allows dosing speeds of up to 80 ml / s for highly abrasive heat-conducting materials. This equates to the application of one liter of thermal interface material in less than 15 seconds. Scheugenpflug emphasizes that the system solution was designed for ease of use and maximum robustness. The user could thus benefit from simple and quick maintenance, long service lives and significantly reduced maintenance costs.