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Vehicle power supply apparatus

一种电源装置、车辆的技术，应用在电路装置、电池电路装置、车辆储能等方向，能够解决发动机负载增大燃料消耗性能等问题，达到提高燃料消耗性能、增大再生量、提高发电电压的效果

Inactive Publication Date: 2015-06-10
SUBARU CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, always driving the alternator becomes a factor that increases the engine load and reduces fuel consumption performance

Method used

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  • Vehicle power supply apparatus
  • Vehicle power supply apparatus
  • Vehicle power supply apparatus

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Embodiment Construction

[0019] Hereinafter, embodiments of the present invention will be described in detail based on the drawings. figure 1 It is a schematic diagram showing the configuration of a vehicle 11 provided with a vehicle power supply device 10 according to an embodiment of the present invention. Such as figure 1 As shown, an engine 12 and a transmission 13 are mounted on a vehicle 11 . An output shaft 14 of the transmission 13 is connected to drive wheels 16 via a differential mechanism 15 . In addition, a starter motor 17 is attached to the engine 12 . Furthermore, an alternator 18 serving as a generator is connected to the engine 12 via a drive belt 19 . In addition, the illustrated vehicle 11 is a so-called micro-hybrid vehicle, and the vehicle 11 is equipped with a regenerative system of a low-voltage system using an alternator 18 . At the time of deceleration when the depression of the accelerator pedal is released, the alternator 18 is driven to generate electricity, whereby the...

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PUM

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Abstract

A first power supply system is constituted by an alternator and a main battery while a second power supply system is constituted by electrical equipment and a sub-battery. Further, a switch is provided between the first power supply system and the second power supply system. During vehicle deceleration, the switch is switched to a disconnected state, whereby the first power supply system and the second power supply system are disconnected. As a result, a generation voltage of the alternator can be raised, enabling an increase in the generation amount, without applying an excessive voltage to the electrical equipment. Hence, the main battery can be charged sufficiently during deceleration, and therefore the alternator can be halted during acceleration and steady travel. Furthermore, by halting the alternator, an engine load can be reduced, and as a result, an improvement in the fuel efficiency of the vehicle can be achieved.

Description

technical field [0001] The present invention relates to a vehicle power supply device mounted on a vehicle. Background technique [0002] In current vehicles, lead storage batteries are generally used to supply electric power to electrical equipment. Although this lead storage battery can secure a large storage capacity, it has a characteristic of remarkably deteriorating due to charging and discharging. Therefore, in a vehicle equipped with a lead-acid battery, since the alternator (generator) is always driven to generate electricity, charging and discharging of the lead-acid battery can be prevented. However, always driving the alternator becomes a factor that increases the load on the engine and lowers the fuel consumption performance. Therefore, the following technical proposals have been proposed, namely: a lithium-ion battery is also provided on the basis of the lead storage battery, and the power generation voltage of the alternator is controlled to be 0 when accele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L1/00H01M10/42H01M10/44
CPCB60L7/10B60R25/00H01M10/44H01M10/48H02J7/1423H02J7/1438H02J7/342Y02T10/70Y02E60/10
Inventor 小室正树佐藤丰小野干夫
Owner SUBARU CORP