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Power supply controller

一种电源控制装置、充放电控制的技术，应用在电路装置、电池电路装置、自动转向控制部件等方向，能够解决电力量大等问题

Inactive Publication Date: 2010-11-03
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although such an electric power steering device uses an on-vehicle battery as its power source, it consumes a large amount of power.

Method used

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Embodiment Construction

[0057] Hereinafter, a power supply control device according to an embodiment of the present invention will be described with reference to the drawings. figure 1 A schematic configuration of an electric power steering device for a vehicle including a power source control device according to this embodiment is shown.

[0058]The main part of the electric power steering device of the vehicle of the present embodiment includes: the steering mechanism 10 that steers the steering wheels through the steering operation of the steering wheel 11; the electric motor 20 that is installed on the steering mechanism 10 and generates steering assist torque; The motor drive circuit 30 of the electric motor 20; the boost circuit 40 that boosts the output voltage of the main power supply device 100 and supplies it to the motor drive circuit 30; the power supply circuit connected in parallel between the boost circuit 40 and the motor drive circuit 30 and an electronic control device 60 for contro...

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Abstract

The invention relates to a power supply control apparatus. A power supply control section 62 calculates a target charge / discharge current of a secondary power supply apparatus 50 on the basis of an actual charged amount and a target charged amount of the secondary power supply apparatus 50, and feedback-controls the stepped-up voltage of a step-up circuit 40 such that an actual charge / discharge current detected by a secondary current sensor 51 coincides with a target charge / discharge current. When the actual charged amount is equal to or greater than the target charged amount, the target charge / discharge current is set to zero so as to prevent overcharging. When the actual charged amount is less than the target charged amount, a target charge current corresponding to a capacity margin of the step-up circuit 40 is set so as to quickly charge the secondary power supply apparatus 50. When the output of the step-up circuit 40 has no margin, the target charge / discharge current is set to zero so as to supply electric power from the secondary power supply apparatus 50 by an amount corresponding to the deficiency of the capacity of the step-up circuit 40. Thus, charging of the secondary power supply apparatus 50 is performed well.

Description

technical field [0001] The present invention relates to a power control device having a main power supply device and a sub power supply device for supplying power to an electric actuator. Background technique [0002] Conventionally, for example, an electric power steering apparatus includes an electric motor to apply steering assist torque to a turning operation of the steering wheel, and the steering assist torque is adjusted by performing energization control that changes the current flowing through the electric motor. Although such an electric power steering device uses an on-vehicle battery as its power source, it consumes a large amount of electric power. Therefore, for example, a device proposed in Japanese Patent Application Laid-Open No. 2007-91122 includes a sub power supply device that assists an on-vehicle battery. The auxiliary power supply unit is connected in parallel to the power supply line from the vehicle battery (hereinafter referred to as the main power...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R16/033B62D5/04B62D6/00
CPCB62D5/046H02J7/0054B62D5/0481B62D5/0457H02J7/342B60R16/033B62D5/04B62D6/00
Inventor 山下正治
Owner TOYOTA JIDOSHA KK
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