Temperature control system
AssigneeToyota Jidosha Kabushiki Kaisha
InventorYu Hoshino
Life of this patent
Estimating the term…
Abstract
A temperature control system includes an air-conditioning circuit, a battery temperature adjustment circuit, a heat exchanger, a thermometer, and a controller. The air-conditioning circuit includes a heating unit for heating the air-conditioning heating medium and an air-conditioning flow amount adjustment unit for adjusting the amount of flow of the air-conditioning heating medium. The battery temperature adjustment circuit includes a battery flow amount adjustment unit for adjusting the amount of flow of the battery heating medium. The controller variably controls the amount of flow of at least one of the air-conditioning heating medium and the battery heating medium, depending on a request for increasing the temperature of the battery, a request for heating the cabin of the vehicle, and the temperature of the battery.
Claims9
A temperature control system, comprising:
- an air-conditioning circuit configured for circulating an air-conditioning heating medium and configured for adjusting a temperature of a cabin of a vehicle through heat exchange between the air-conditioning heating medium and air in the cabin;
- a battery temperature adjustment circuit configured for circulating a battery heating medium and configured for adjusting a temperature of a battery through heat exchange between the battery heating medium and the battery;
- a heat exchanger configured for exchanging heat between the air-conditioning heating medium and the battery heating medium;
- a thermometer configured for measuring the temperature of the battery;
- and
- a control unit configured for controlling the air-conditioning circuit and the battery temperature adjustment circuit,
- wherein
- the air-conditioning circuit includes
- a heater configured for heating the air-conditioning heating medium,
- a heater core configured for performing the heat exchange between the air-conditioning heating medium and the air in the cabin, and
- a first water pump configured for adjusting an amount of flow of the air-conditioning heating medium and configured for outputting a first amount of flow of the air-conditioning heating medium and a second amount of flow of the air-conditioning heating medium, the second amount of flow of the air-conditioning heating medium being larger than the first amount of flow of the air-conditioning heating medium,
- the battery temperature adjustment circuit includes a second water pump configured for adjusting an amount of flow of the battery heating medium and configured for outputting a first amount of flow of the battery heating medium and a second amount of flow of the battery heating medium, the second amount of flow of the battery heating medium being larger than the first amount of flow of the battery heating medium,
- the control unit is configured to variably control an amount of flow of at least one of the air-conditioning heating medium or the battery heating medium, depending on a request for increasing the temperature of the battery, a request for heating the cabin of the vehicle, and the temperature of the battery, and
- the control unit is configured to, in response to (i) receiving the request for increasing the temperature of the battery, (ii) receiving the request for heating the cabin, (iii) an output of the heater being maximized, and (iv) the temperature of the battery being lower than a set temperature,
- set the first water pump to output the second amount of flow of the air-conditioning heating medium,
- set the second water pump to output the second amount of flow of the battery heating medium, and
- turn on a bypass route in which the air-conditioning heating medium flows from the heater to the heat exchanger while bypassing the heater core, to increase the amount of flow of the air-conditioning heating medium to the heat exchanger while reducing the amount of flow of the air-conditioning heating medium to the heater core.
Dependencies are inferred from the claim text.