Temperature control device and method for battery pack

Abstract

The invention relates to a temperature control device and method for a battery pack. The device comprises a water distribution and collection module, a plurality of flow control modules and a plurality of pipelines. Wherein one end of each of the pipelines is connected to the water distribution and collection module, and the other end of each of the pipelines is used for being connected with a corresponding battery pack; and the flow control module is arranged on the pipeline, and is used for controlling the flow rate of the coolant flowing through the battery pack connected to each pipeline.The flow control module is added in the pipeline connected with each battery pack, the invention realizes the separate control of the flow rate of the coolant flowing through each battery pack, further adapts to different types of battery packs, and ensures the heat dissipation efficiency of each battery pack in the charging process.

Description

technical field [0001] The invention relates to the technical field of new energy vehicles, in particular to a temperature control device and method for a battery pack. Background technique [0002] With the rapid development of electric vehicles, how to quickly realize the energy supply of electric vehicles and make electric vehicles as convenient as traditional fuel vehicles is one of the important problems faced by the electric vehicle industry. The emergence of charging and swapping stations has successfully solved this problem . The charging and swapping station replaces the battery on the car that needs to be replenished with a battery that is fully charged or has a certain amount of power in the battery compartment, and sends the replaced battery into the battery compartment for charging. With the development of charging and swapping stations, different types of batteries must be mixed in the same charging and swapping station, and the speed of battery replacement is...

AI Technical Summary

Problems solved by technology

With the development of charging and swapping stations, different types of batteries must be mixed in the same charging and swapping station, and the speed of battery replacement is accelerating, and the internal cold plate structure and flow resistance of different types of batteries will also be different. Therefore, there is no separate pipeline control The water cooling system cannot meet the simultaneous heat dissipation of mixed batteries in the replacement station, and uneven flow distribution will occur. For example, if the flow rate of the sub-pipeline is too large, it will lead to excessive insertion and withdrawal pressure of the quick plug and excessive impact force of the cold plate; the flow rate of the sub-pipeline is small. It will lead to poor temperature uniformity of the battery. At the same time, it will affect the charging efficiency and life, and the temperature difference between the inlet and outlet water cannot be controlled.

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