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Power supply controller

A technology for power supply and control device, applied in the direction of motor control, pump device, pump control, etc., can solve problems such as cost increase, and achieve the effects of preventing damage, shortening time, and preventing a sharp drop in oil pressure

Pending Publication Date: 2021-04-13
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the above problems, there is an option to use a CPU with high heat resistance, but another problem is that the cost increases due to the use of a CPU with special specifications.

Method used

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Experimental program
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Embodiment Construction

[0058] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. figure 1 It is a configuration diagram of a power supply control device according to an embodiment of the present invention. The power supply control device 1 is applied to a vehicle (not shown) equipped with a transmission 6 and an electric oil pump 3 that supplies oil pressure to the transmission 6 , and controls the supply of electric power for driving the electric oil pump 3 .

[0059] The electric oil pump 3 is driven by a motor 12 supplied with electric power from a battery (not shown) or the like, pressurizes oil (hydraulic oil) drawn up from an oil tank 13 , and supplies it to the transmission 6 . The motor 12 is driven by the control of the driver 4 . The driver 4 includes a circuit board (both not shown) having a CPU, and controls driving of the motor 12 based on a control signal supplied from the control unit 2 . That is, the driver 4 con...

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PUM

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Abstract

The invention provides a power supply controller which can properly protect a circuit board of a driver and shorten the time for the circuit board to return to a normal operation state from a protection state when an electric oil pump is at a high temperature. The power supply controller includes a driver having a circuit board and controlling an operation of an electric oil pump; a control unit controlling power supply to the driver; a board temperature sensor detecting a temperature of the circuit board; and an oil temperature sensor detecting a temperature of a working oil of a transmission as an oil temperature. The control unit executes energization prohibition control for prohibiting power supply to the driver when the temperature of the circuit board detected by the board temperature sensor exceeds a predetermined first threshold temperature, and executes cancellation determination for determining whether to cancel the energization prohibition control based on the oil temperature detected by the oil temperature sensor during execution of the energization prohibition control.

Description

technical field [0001] The present invention relates to a power supply control device that controls the supply of power to an electric oil pump that supplies oil pressure to a driving force transmission mechanism. Background technique [0002] In recent years, a so-called electromechanical integrated electric oil pump has been adopted, which is integrated with an electric oil pump that supplies hydraulic pressure to a hydraulic driving force transmission mechanism such as a transmission of a vehicle, and includes semiconductor elements, etc., that control its operating state. The electronic control unit performs operation optimization, abnormality detection, and the like through an in-vehicle Local Area Network (LAN) using a communication protocol such as a Controller Area Network (CAN). [0003] For example, Patent Document 1 discloses a technique in which, in an electric oil pump provided with a circuit board having a central processing unit (Central Processing Unit, CPU),...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P29/68
CPCH02P29/68F04D15/0263F04D15/0077F05D2270/303F04D29/5813F04D13/06F16H61/0031F16H2061/1268F16H2061/1224F16H61/12F16H59/72F16H61/0025F16H61/0006F04D13/02F04D13/12F04D29/5806F04B23/04F04C14/28F04B49/02F04B17/03F04B49/10F04B49/065
Inventor 原田雅道
Owner HONDA MOTOR CO LTD