Vehicle power supply system

A power supply system and vehicle technology, which is applied in vehicle energy storage, vehicle components, electric vehicle charging technology, etc., can solve the problems of current supply capacity limitation, inability to obtain advantages, etc., and achieve the effect of effective charging

Pending Publication Date: 2020-08-11
MAZDA MOTOR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this configuration, there is a problem that a special voltage conversion device for charging is required, and the charging current for charging the battery is limited by the current supply capability of the voltage conversion device for charging.
If this is the case, even if a battery with a low voltage is used, sufficient advantages cannot be obtained

Method used

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Examples

Experimental program
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Embodiment Construction

[0075] Next, preferred embodiments of the present invention will be described with reference to the drawings.

[0076] 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.

[0077] 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.

[0078] That is, as a vehicle driving device, the v...

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PUM

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Abstract

The invention provides a vehicle power supply system which can use a battery with low voltage and can be effectively charged by an external power supply. The vehicle power supply system (10) charged by an external power supply (17) that performs charge with a voltage equal to or more than a predetermined lower limit voltage. The vehicle power supply system (10) includes a battery (18) having a rated voltage lower than the lower limit voltage, a capacitor (22) electrically connected in series to the battery (18), and a power feeding device (23) that receives electric power from the external power supply and charges the battery (18) and the capacitor (22). The capacitor (22) is configured so that the total of the rated voltage of the battery (18) and the rated voltage of the capacitor (22) is higher than the lower limit voltage.

Description

technical field [0001] The present invention relates to a vehicle power supply system, and more particularly to a vehicle power supply system charged by an external power supply that charges at a voltage equal to or higher than a predetermined lower limit voltage. Background technique [0002] A plug-in hybrid vehicle is described in JP 2014-231290 A (Patent Document 1). The plug-in hybrid vehicle is equipped with a high-voltage battery used as a power source of a motor / generator, a 12V battery used as a power source of auxiliary equipment of the vehicle, and a capacitor used as a power source of a starter motor. Also, when charging the plug-in hybrid vehicle, a connector plug from an external power source is connected to the normal external charging port or the rapid external charging port. The power from the connector plug is charged to the high-power battery at a voltage supplied from an external power source without passing through a voltage conversion device or the lik...

Claims

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Application Information

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IPC IPC(8): B60L53/14B60L53/20B60L50/40B60L50/60
CPCB60L53/14B60L53/20B60L50/40B60L50/60B60L58/20B60L50/15B60L50/16B60L53/22B60L2260/28B60L2210/10H02J7/345H02J7/143H02J7/0019Y02T10/72Y02T10/70Y02T10/7072Y02T90/14Y02T90/12B60L50/11B60L53/53B60L53/55B60L53/62H02J7/007H02J7/1438
Inventor 古川晶博平野晴洋佐内英树
Owner MAZDA MOTOR CORP
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