VEHICLE BATTERY UNIT AUXILIARY COOLING

摘要

The present invention relates to a vehicle thermal management system (5, 5', 5'', 5''', 5'''') which comprises a pipe arrangement (6) and is arranged to cool a vehicle battery unit 5 (2) by means of a coolant that is arranged to run in the pipe arrangement (6) through a part of, or adjacent to, the vehicle battery unit (2). The thermal management system (5, 5', 5'', 5''', 5'''') further comprises at least one pyrotechnical charge (12; 29a-29h; 35) which is positioned in an auxiliary 10 coolant unit (13, 13', 13'', 13''', 13'''') which is arranged to provide an enhanced flow (20, 31, 37, 38, 61) of at least one type of coolant when the pyrotechnical charge (12; 29a- 29h; 35) is detonated (18, 36). 15 The present invention also relates to a corresponding method.