Emergency cooling device

Abstract

The invention relates to an energy storage system (10), particularly a battery having a number of battery cells (12, 14, 16). Said battery cells are accommodated in a first container (24). The first container (24) is separated from a second container (40) by a separating element (28), thereby ensuring a pressure difference ?p for a gas expansion from the first container (24) into the second container (40).

Description

Background technique [0001] During the development of electric vehicles and hybrid drives of vehicles with a combination of internal combustion engine and electric motor, high demands are placed on batteries in terms of energy content, service life and efficiency for future vehicle generations. In order to meet this requirement, various battery types are actively cooled, for example by means of coolants, refrigerants or by means of air. Furthermore, in batteries, for example lithium-ion batteries, it is often very useful to use the waste heat of the battery or to preheat the battery. To this end, it is often advantageous to thermally isolate the battery, so that heat losses are reduced. Furthermore, batteries in cars have reinforced housings, reducing the risk to passengers in the event of an accident or damage. For this reason, therefore, batteries are often accommodated in closed, thermally insulated housings. [0002] Some battery types, such as lithium-ion batteries, ha...

AI Technical Summary

Problems solved by technology

This cannot be achieved with air or water cooling, because it is not practical to design cooling systems for such rapid and intense cooling to prevent "heat escape" especially for lithium-ion batteries, for such rapid and intense cooling of high thermal masses

[0004] In conclusion, it can be understood that the stated safety issue is a major obstacle in the commercialization of such batteries

Images