A heat exchanger and a vehicle thermal management system

Abstract

The invention relates to a heat exchanger. The heat exchanger comprises two current collection pipes, a flat pipe and fins, wherein partition plates are arranged at corresponding positions of the two current collection pipes, a first current collection pipe is partitioned into a first cavity and a second cavity by the partition plate, a second current collection pipe is partitioned into a third cavity and a fourth cavity by the partition plate, the heat exchanger comprises four interfaces, two of the four interfaces are inlets, namely a first inlet and a second inlet, the other two interfaces are outlets, namely a first outlet and a second outlet, each of the first current collection pipe and the second current collection pipe comprises two interfaces, one of the first inlet and the first outlet communicates with the first cavity, the other interface communicates with the third cavity, one of the second inlet and the second outlet communicates with the second cavity, and the other interface communicates with the fourth cavity. The heat exchanger can be simultaneously used as two different purposes, different heat exchange mediums can pass through two runners, and the purposes under different working conditions are met.

Description

technical field [0001] The invention relates to the technical field of heat exchange, in particular to a vehicle thermal management system and a heat exchanger thereof. Background technique [0002] In the hybrid electric vehicle system, the battery pack is used as the power source of the hybrid electric vehicle in the electric mode. Only when the battery pack works in a suitable temperature range can it ensure high efficiency and long life. Therefore, thermal management of the battery pack is required to ensure that the battery pack in the proper temperature range. Now when the temperature is high, the refrigeration system is generally used to cool the battery pack, and when the heat load of the battery pack is not high but heat dissipation and cooling are required, a natural heat dissipation circuit for the battery pack is generally set up to cool the battery pack. The natural heat dissipation circuit includes a heat dissipation water tank, which plays the role of heat di...

AI Technical Summary

Problems solved by technology

Now when the temperature is high, the refrigeration system is generally used to cool the battery pack, and when the heat load of the battery pack is not high but heat dissipation and cooling are required, a natural heat dissipation circuit for the battery pack is generally set up to cool the battery pack. The natural heat dissipation circuit includes a heat dissipation water tank, which plays the role of heat dissipation and cooling when the heat load of the battery pack is not high, but the cost of setting up a low-temperature heat dissipation water tank alone is relatively high, and takes up corresponding installation space A separate setting may make its heat dissipation relatively large and may cause the coolant temperature to be low, such as in the spring and autumn when the heat load of the battery pack is low; and many existing hybrid vehicles and pure electric vehicles are based on existing For vehicle models that are modified, the front-end module of the thermal management system of the existing model only includes two heat exchangers: the condenser of the refrigeration system and the radiator water tank of the engine system. Changes and modifications are relatively troublesome and space may be limited

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