Vehicle cooling circuit

Abstract

The present disclosure relates to a vehicle cooling circuit for cooling a temperature-increasing device, in particular a battery, by means of a coolant conducted in a coolant circuit, wherein the coolant circuit has a heat exchanger configured as an evaporator via which the coolant circuit is coupled to a cooling medium circuit. In accordance with the present disclosure, the chiller is arranged downstream of the heat exchanger in the direction of flow of the coolant in the coolant circuit. Furthermore a bypass valve is arranged in the coolant line such that the coolant can be conducted fully or partially past the chiller.

Description

technical field [0001] The invention relates to a vehicle cooling circuit for cooling a device of increased temperature in a vehicle. Background technique [0002] A problem arises in the development of new-generation vehicles in which temperature-increasing devices used, such as accumulators or fuel cells, must be cooled during operation. In this respect, a considerable heat load has to be dissipated compared to a conventional car with an internal combustion engine. Because the dissipation of the heat load requires very large heat exchangers and very large cooling air flows, it is known, for example, from the US patent document US 4,415,847 A, which provides a coolant circuit combined with a cooling medium circuit, with A device that cools the temperature rise of the coolant conveyed through the coolant circuit. The design of the corresponding vehicle cooling circuit in US 4,415,847 A can be seen schematically in FIG. 1 . Here, the coolant circuit 10 is connected to the ...

AI Technical Summary

Problems solved by technology

This coolant circuit line has the disadvantage that the large amount of cooling liquid flowing through the evaporator of the refrigeration circuit cannot be reduced as needed

For this reason, the refrigerating machine cannot be used to export cooling power to the outside world in part-load operation, when the cooling power can largely be introduced into the coolant circuit by the evaporator

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