Patent ID: 11859923
Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  G  H  Y | IPC F  G

Claim 9:
10. An automatic coolant injection method for a cooling system, the cooling system comprising a heat exchanger, a converter, and a liquid cooling pipeline connecting the heat exchanger with the converter and provided with a circulation pump, said method comprising:
providing a coolant tank and performing coolant adding operation for the coolant tank;
disposing a liquid level sensor on the coolant tank for detecting a liquid level of the coolant tank;
providing an injection pump connected to the coolant tank, for injecting coolant from the coolant tank into the liquid cooling pipeline when the injection pump is turned on; and
providing a control unit for controlling turning-on and turning-off operations of the injection pump and turning-on and turning-off operations of the circulation pump, and setting a dynamic hydraulic threshold and a static hydraulic threshold corresponding to states of the coolant in the liquid cooling pipeline,
wherein the control unit is configured to,
when the liquid level of the coolant tank reaches an upper liquid level threshold, turn on the injection pump so that the coolant is injected into the liquid cooling pipeline by the injection pump; and
when a pressure of the coolant in the liquid cooling pipeline reaches an upper static hydraulic threshold, turn off the injection pump, and execute the turning-on and turning-off operations of the circulation pump with a preset circulation period, wherein the circulation pump forces the coolant to circulate in the liquid cooling pipeline when being turned on,
wherein the coolant tank is further provided with a respiration valve for communicating inside and outside of the coolant tank, allowing the coolant in the coolant tank to automatically flow into the injection pump.