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Vehicle power supply system

A technology of power supply system and vehicle, applied in the field of vehicle power supply system, can solve the problem of insufficient discharge, achieve the effect of safe and rapid replacement, ensure the performance of electric shock protection and reliable discharge

Pending Publication Date: 2020-09-11
MAZDA MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, when increasing the capacity of a capacitor (condenser) mounted on a vehicle, there is a possibility that sufficient discharge cannot be performed only by passing a d-axis current to the motor as in the invention described in Patent Document 1.

Method used

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Examples

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Embodiment Construction

[0063] Next, preferred embodiments of the present invention will be described with reference to the drawings.

[0064] figure 1 It is a layout diagram of a vehicle equipped with a vehicle power supply system according to the first embodiment of the present invention.

[0065] like figure 1 As shown, the vehicle 1 equipped with the vehicle power supply system 10 according to the first embodiment of the present invention is a so-called FR (Front engine, Rear drive: front engine, rear drive) vehicle. An engine 12 serving as an internal combustion engine is mounted on the front portion of the vehicle positioned ahead, and drives a pair of left and right rear wheels 2a serving as main drive wheels. In addition, as will be described later, the rear wheels 2a are also driven by a main drive motor, and the pair of left and right front wheels 2b serving as sub drive wheels are driven by sub drive motors serving as in-wheel motors.

[0066] That is, as a vehicle driving device, the veh...

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PUM

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Abstract

The invention provides a vehicle power supply system capable of reliably and quickly discharging charges stored in a capacitor during a vehicle collision or the like. A vehicle power supply system (10) to be installed in a vehicle (1) includes a battery (18) having a rated voltage lower than a predetermined voltage, a capacitor (22) having a rated voltage higher than the predetermined voltage, a capacitor discharging device (19) that discharges the electric charge stored in the capacitor (22), and a control device (19a) that controls the capacitor discharging device (19), in which the controldevice (19a) controls the capacitor discharging device (19) so that the electric charge stored in the capacitor (22) is discharged and the battery (18) is charged with the discharged electric charge when the vehicle (1) collides or when the capacitor (22) is to be replaced.

Description

technical field [0001] The present invention relates to a vehicle power supply system, and more particularly to a vehicle power supply system mounted on a vehicle. Background technique [0002] An automobile is described in JP 2016-111754 A (Patent Document 1). In this automobile, when a collision of the vehicle is detected and the motor is rotating, three-phase conduction control is performed to conduct all of the upper arms or all of the lower arms of a plurality of transistors of the inverter. Furthermore, by executing this three-phase conduction control, the rotation of the motor is stopped, and after the rotation of the motor is stopped, a d-axis current is made to flow through the motor, thereby executing discharge control for discharging charges stored in capacitors of the power supply system. In addition, since the inverter for driving the motor may overheat due to execution of the three-phase conduction control, in the automobile described in Patent Document 1, the...

Claims

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Application Information

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IPC IPC(8): B60L3/00B60L3/04B60L50/40B60L50/60B60R16/03H02J7/34
CPCB60L3/0007B60L3/04B60L50/40B60L50/60B60R16/03H02J7/34H02J7/345H02M3/07B60K6/28B60L58/10B60L15/007B60L3/0046B60L15/2045H02J2310/48H02J1/082Y02T10/70Y02T10/92Y02T10/7072Y02T90/14B60K6/48B60K2006/4825B60K6/52B60W2030/082B60W2556/50B60W2520/105Y02T10/62Y02T10/64Y02T10/72H02M1/322B60L53/22B60L50/66H02J2207/20H02J7/007188B60L2210/10B60R21/013B60R21/0132
Inventor 古川晶博平野晴洋佐内英树
Owner MAZDA MOTOR