COOLING SYSTEM
First Claim
1. A cooling system, comprising:
- a load drive device having a power storage mechanism configured to be chargeable/dischargeable, and a drive circuit receiving supply of electric power from said power storage mechanisms and driving an electric load;
a cooling device cooling said load drive device; and
a control device controlling an operation of said load drive device and an operation of said cooling device,said cooling device including a cooling medium path allowing a cooling medium to pass therethrough,said power storage mechanism being disposed to share said cooling medium path with said drive circuit,said control device including a temperature-raising control unit performing temperature-raising control of said power storage mechanism when a temperature of said power storage mechanism is below a prescribed temperature lower limit value, andsaid temperature-raising control unit includingan estimation unit estimating an amount of heat generated from said drive circuit, anda drive control unit controlling said drive circuit such that a power loss generated at said drive circuit becomes larger than a power loss during normal control, when the amount of heat generated from said drive circuit, estimated by said estimation unit, falls short of an amount of heat required for warming said power storage mechanism.
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Accused Products
Abstract
A cooling system has a configuration in which a cooling system for an inverter device and a motor generator also serves as a cooling system for a battery. In this configuration, a control device performs temperature-raising control of the battery when a battery temperature is below a prescribed temperature lower limit value. The control device controls an operation of a switching valve such that cooling water from a cooling medium path is outputted to a bypass path. Further, if a cooling water temperature is lower than a prescribed temperature, the control device controls the inverter device such that a power loss during a switching operation in a switching element included in the inverter device becomes larger than a power loss during normal control. As a result, the cooling system having a small-sized, low-cost configuration rapidly recovers capacity decline of the battery, which occurs at low temperatures.
23 Citations
22 Claims
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1. A cooling system, comprising:
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a load drive device having a power storage mechanism configured to be chargeable/dischargeable, and a drive circuit receiving supply of electric power from said power storage mechanisms and driving an electric load; a cooling device cooling said load drive device; and a control device controlling an operation of said load drive device and an operation of said cooling device, said cooling device including a cooling medium path allowing a cooling medium to pass therethrough, said power storage mechanism being disposed to share said cooling medium path with said drive circuit, said control device including a temperature-raising control unit performing temperature-raising control of said power storage mechanism when a temperature of said power storage mechanism is below a prescribed temperature lower limit value, and said temperature-raising control unit including an estimation unit estimating an amount of heat generated from said drive circuit, and a drive control unit controlling said drive circuit such that a power loss generated at said drive circuit becomes larger than a power loss during normal control, when the amount of heat generated from said drive circuit, estimated by said estimation unit, falls short of an amount of heat required for warming said power storage mechanism. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A cooling system, comprising:
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a load drive device having a power storage mechanism configured to be chargeable/dischargeable, and a drive circuit receiving supply of electric power from said power storage mechanism and driving an electric load; a cooling device cooling said load drive device; and a control device controlling an operation of said load drive device and an operation of said cooling device, said cooling device including a cooling medium path allowing a cooling medium to pass therethrough, said power storage mechanism being disposed to share said cooling medium path with said drive circuit, said control device including temperature-raising control means for performing temperature-raising control of said power storage mechanism when a temperature of said power storage mechanism is below a prescribed temperature lower limit value, and said temperature-raising control means including estimation means for estimating an amount of heat generated from said drive circuit, and drive control means for controlling said drive circuit such that a power loss generated at said drive circuit becomes larger than a power loss during normal control, when the amount of heat generated from said drive circuit, estimated by said estimation means, falls short of an amount of heat required for warming said power storage mechanism. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification