Battery cooling system
AssigneeToyota Jidosha Kabushiki Kaisha
InventorDaisuke TOKOZAKURA
Life of this patent
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Abstract
A battery cooling system includes: a circulation circuit configured to circulate common oil to a transaxle, a battery, and an oil cooler; a first electric oil pump that is disposed in a first oil passage; a second electric oil pump that is disposed in a second oil passage; and a controller configured to control the first electric oil pump and the second electric oil pump. The controller is configured to operate the first electric oil pump and stop the second electric oil pump when a temperature of the battery is equal to or lower than a first predetermined value, and stop the first electric oil pump and operate the second electric oil pump when the temperature of the battery is higher than the first predetermined value.
Claims9
A battery cooling system comprising:
- a circulation circuit configured to circulate common oil to a transaxle, a battery, and an oil cooler, the oil for lubrication of the transaxle being used to cool the battery;
- a first electric oil pump that is disposed in a first oil passage configured to supply the oil to the transaxle and the battery, not through the oil cooler, in the circulation circuit;
- a second electric oil pump that is disposed in a second oil passage configured to supply the oil to the transaxle and the battery through the oil cooler, in the circulation circuit;
- and
- a controller configured to control the first electric oil pump and the second electric oil pump,
- wherein the controller is configured to
- operate the first electric oil pump and stop the second electric oil pump when a temperature of the battery is equal to or lower than a first predetermined value, and
- stop the first electric oil pump and operate the second electric oil pump when the temperature of the battery is higher than the first predetermined value.
Dependencies are inferred from the claim text.