Control device for vehicle-mounted cooling system, and vehicle-mounted cooling system

A control device for controlling, in response to an air-conditioning request and a battery cooling request, a drive state of a compressor that compresses a refrigerant and is included in an air-conditioning refrigerant circuit of a vehicle-mounted cooling system, the air-conditioning refrigerant circuit including, in addition to the compressor, a refrigerant passage in which the refrigerant circulates, a heat source-side heat exchanger, and a use-side heat exchanger, the vehicle-mounted cooling system including, in addition to the air-conditioning refrigerant circuit, a battery that supplies power to a vehicle-mounted electric component, and a battery cooling unit that cools the battery using the refrigerant circulated in the refrigerant passage,

• the control device comprising:
• an abnormality determination unit configured to determine whether an abnormality has occurred in the air-conditioning refrigerant circuit;
• and
• a control mode change unit configured to perform, under a situation where the battery cooling request has occurred and it is determined that an abnormality has occurred in the air-conditioning refrigerant circuit, a change of a refrigerant-circulation control mode while permitting the battery cooling unit to continuously cool the battery based on the circulated refrigerant, the refrigerant-circulation control mode representing how the refrigerant is circulated in the air-conditioning refrigerant circuit, wherein
• the control mode change unit is configured to:
• perform, as the change of the refrigerant-circulation control mode, a restriction of a rise in a pressure of the refrigerant in the refrigerant passage, and
• perform a restriction of driving of the compressor to thereby prevent the pressure of the refrigerant in the refrigerant passage from rising beyond a predetermined high-pressure upper limit value.

A control device for controlling, in response to an air-conditioning request and a battery cooling request, a drive state of a compressor that compresses a refrigerant and is included in an air-conditioning refrigerant circuit of a vehicle-mounted cooling system, the air-conditioning refrigerant circuit including, in addition to the compressor, a refrigerant passage in which the refrigerant circulates, a heat source-side heat exchanger, and a use-side heat exchanger, the vehicle-mounted cooling system including, in addition to the air-conditioning refrigerant circuit, a battery that supplies power to a vehicle-mounted electric component, and a battery cooling unit that cools the battery using the refrigerant circulated in the refrigerant passage,

• the control device comprising:
• an abnormality determination unit configured to determine whether an abnormality has occurred in the air-conditioning refrigerant circuit;
• and
• a control mode change unit configured to perform, under a situation where the battery cooling request has occurred and it is determined that an abnormality has occurred in the air-conditioning refrigerant circuit, a change of a refrigerant-circulation control mode while permitting the battery cooling unit to continuously cool the battery based on the circulated refrigerant, the refrigerant-circulation control mode representing how the refrigerant is circulated in the air-conditioning refrigerant circuit, wherein
• the control mode change unit is configured to, while performing, as the change of the refrigerant-circulation control mode, restriction of a rise in a pressure of the refrigerant, lower a degree of the restriction of the rise in the pressure of the refrigerant in response to determination that a traveling speed of a vehicle is higher than a predetermined speed threshold.

A control device for controlling, in response to an air-conditioning request and a battery cooling request, a drive state of a compressor that compresses a refrigerant and is included in an air-conditioning refrigerant circuit of a vehicle-mounted cooling system, the air-conditioning refrigerant circuit including, in addition to the compressor, a refrigerant passage in which the refrigerant circulates, a heat source-side heat exchanger, and a use-side heat exchanger, the vehicle-mounted cooling system including, in addition to the air-conditioning refrigerant circuit, a battery that supplies power to a vehicle-mounted electric component, and a battery cooling unit that cools the battery using the refrigerant circulated in the refrigerant passage,

• the control device comprising:
• an abnormality determination unit configured to determine whether an abnormality has occurred in the air-conditioning refrigerant circuit;
• a control mode change unit configured to perform, under a situation where the battery cooling request has occurred and it is determined that an abnormality has occurred in the air-conditioning refrigerant circuit, a change of a refrigerant-circulation control mode while permitting the battery cooling unit to continuously cool the battery based on the circulated refrigerant, the refrigerant-circulation control mode representing how the refrigerant is circulated in the air-conditioning refrigerant circuit;
• and
• a prediction unit configured to predict, under a situation where no battery cooling request has occurred and it is determined that an abnormality has occurred, whether the battery cooling request will occur based on a predicted future traveling of the vehicle from a present time, wherein
• the control mode change unit is configured to perform the change of the refrigerant-circulation control mode in response to determination that the battery cooling request will occur.

A control device for controlling, in response to an air-conditioning request and a battery cooling request, a drive state of a compressor that compresses a refrigerant and is included in an air-conditioning refrigerant circuit of a vehicle-mounted cooling system, the air-conditioning refrigerant circuit including, in addition to the compressor, a refrigerant passage in which the refrigerant circulates, a heat source-side heat exchanger, and a use-side heat exchanger, the vehicle-mounted cooling system including, in addition to the air-conditioning refrigerant circuit, a battery that supplies power to a vehicle-mounted electric component, and a battery cooling unit that cools the battery using the refrigerant circulated in the refrigerant passage,

• the control device comprising:
• an abnormality determination unit configured to determine whether an abnormality has occurred in the air-conditioning refrigerant circuit;
• and
• a control mode change unit configured to perform, under a situation where the battery cooling request has occurred and it is determined that an abnormality has occurred in the air-conditioning refrigerant circuit, a change of a refrigerant-circulation control mode while permitting the battery cooling unit to continuously cool the battery based on the circulated refrigerant, the refrigerant-circulation control mode representing how the refrigerant is circulated in the air-conditioning refrigerant circuit,
• wherein the control mode change unit includes:
• an air-conditioning restriction unit configured to perform, as the change of the refrigerant-circulation control mode, a restriction of air conditioning carried out by the air-conditioning refrigerant circuit,
• wherein the air-conditioning restriction unit is configured to perform, under the situation where the battery cooling request and the air-conditioning request have occurred and it is determined that an abnormality has occurred in the air-conditioning refrigerant circuit, restriction of the air conditioning carried out by the air-conditioning refrigerant circuit,
• wherein the control device further comprises a prediction unit configured to predict, under a situation where at least one of the battery cooling request and the air-conditioning request has not occurred and it is determined that an abnormality has occurred, whether both the battery cooling request and the air-conditioning request will occur based on a predicted future traveling of the vehicle from a present time, and
• wherein the control mode change unit is configured to permit the air-conditioning refrigerant circuit to carry out redundant air-conditioning that is redundant for presently needed air-conditioning.

A control device for controlling, in response to an air-conditioning request and a battery cooling request, a drive state of a compressor that compresses a refrigerant and is included in an air-conditioning refrigerant circuit of a vehicle-mounted cooling system, the air-conditioning refrigerant circuit including, in addition to the compressor, a refrigerant passage in which the refrigerant circulates, a heat source-side heat exchanger, and a use-side heat exchanger, the vehicle-mounted cooling system including, in addition to the air-conditioning refrigerant circuit, a battery that supplies power to a vehicle-mounted electric component, and a battery cooling unit that cools the battery using the refrigerant circulated in the refrigerant passage,

• the control device comprising:
• an abnormality determination unit configured to determine whether an abnormality has occurred in the air-conditioning refrigerant circuit;
• and
• a control mode change unit configured to perform, under a situation where the battery cooling request has occurred and it is determined that an abnormality has occurred in the air-conditioning refrigerant circuit, a change of a refrigerant-circulation control mode while permitting the battery cooling unit to continuously cool the battery based on the circulated refrigerant, the refrigerant-circulation control mode representing how the refrigerant is circulated in the air-conditioning refrigerant circuit, wherein:
• the control mode change unit includes:
• an air-conditioning restriction unit configured to perform, as the change of the refrigerant-circulation control mode, a restriction of air conditioning carried out by the air-conditioning refrigerant circuit;
• the refrigerant passage includes a bypass passage provided in parallel to the use-side heat exchanger, the bypass passage enabling the refrigerant to be supplied to the battery cooling unit therethrough;
• the refrigerant passage includes a first circulation path that includes the use-side heat exchanger, and a second circulation path that includes the bypass passage that bypasses the use-side heat exchanger, the refrigerant passage being configured to select at least one of the first circulation path and the second circulation path through which the refrigerant flows;
• and
• the air-conditioning restriction unit is configured to perform, as the restriction of the air-conditioning, a task of causing the refrigerant to flow through the second circulation path while restricting flow of the refrigerant through the first circulation path.

A control device for controlling, in response to an air-conditioning request and a battery cooling request, a drive state of a compressor that compresses a refrigerant and is included in an air-conditioning refrigerant circuit of a vehicle-mounted cooling system, the air-conditioning refrigerant circuit including, in addition to the compressor, a refrigerant passage in which the refrigerant circulates, a heat source-side heat exchanger, and a use-side heat exchanger, the vehicle-mounted cooling system including, in addition to the air-conditioning refrigerant circuit, a battery that supplies power to a vehicle-mounted electric component, and a battery cooling unit that cools the battery using the refrigerant circulated in the refrigerant passage,

• the control device comprising:
• an abnormality determination unit configured to determine whether an abnormality has occurred in the air-conditioning refrigerant circuit;
• and
• a control mode change unit configured to perform, under a situation where the battery cooling request has occurred and it is determined that an abnormality has occurred in the air-conditioning refrigerant circuit, a change of a refrigerant-circulation control mode while permitting the battery cooling unit to continuously cool the battery based on the circulated refrigerant, the refrigerant-circulation control mode representing how the refrigerant is circulated in the air-conditioning refrigerant circuit,
• wherein the abnormality determination unit determines that an abnormality has occurred in the air-conditioning refrigerant circuit in response to at least one of a first abnormality, a second abnormality, and a third abnormality having occurred in the air-conditioning refrigerant circuit,
• the first abnormality representing a heat dissipation fan being stopped or output of the heat dissipation fan being reduced, the heat dissipation fan blowing air to the heat source-side heat exchanger,
• the second abnormality representing an abnormality of heat dissipation due to blockage of the heat source-side heat exchanger, and
• the third abnormality representing an abnormality due to a leakage of the refrigerant in the air-conditioning refrigerant circuit.