Liquid cooling unit and vehicle

The invention relates to a liquid cooling unit and a vehicle, and the liquid cooling unit comprises a first input pipeline; a second input line; the first refrigeration module is connected to the first input pipeline; the second refrigeration module is connected to the first input pipeline and the second input pipeline; the liquid cooling unit comprises a first working mode and a second working mode, and the first input pipeline is configured to input liquid flow to the first refrigeration module and the second refrigeration module in the first working mode. And the second input pipeline is configured to input liquid flow to the second refrigeration module in the second working mode. According to the liquid cooling unit, on the premise that the cooling requirements of a large cooling capacity load and a small cooling capacity load are met, the number of the refrigeration modules is reduced, the structure of the liquid cooling unit is simplified, the occupied space is reduced, and the weight is reduced. 本公开涉及一