Vehicle-use dual voltage type power supply apparatus

A technology for power supply devices and vehicles, which is applied to circuit devices, battery circuit devices, vehicle components, etc., can solve the problems of not meeting people's expectations, reducing power costs, and achieving the effect of reducing fuel costs.

Inactive Publication Date: 2008-08-13
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the results of improving fuel costs fell short of expectations
It seems that because electricity cost reduction type generation control cannot be simply applied to a power supply unit including multiple generators and batteries

Method used

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  • Vehicle-use dual voltage type power supply apparatus
  • Vehicle-use dual voltage type power supply apparatus
  • Vehicle-use dual voltage type power supply apparatus

Examples

Experimental program
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Embodiment Construction

[0035] FIG. 1 shows a circuit configuration of a dual-voltage power supply device for a vehicle according to an embodiment of the present invention.

[0036] First, the power supply system of the dual voltage type power supply unit is explained.

[0037] In FIG. 1, reference numeral 1 denotes a first battery with a rated voltage of 14V, 2 denotes a second battery with a rated voltage of 42V, 3 denotes a DC power transmission device for power transmission between batteries 1 and 2, and 4 denotes an output Dual-voltage generators with two different voltages as high supply voltage and low supply voltage, 5 indicates a low voltage load group including low voltage loads operating at low supply voltage, 6 indicates a group including high voltage loads operating at high supply voltage In the high-voltage load group, 7 represents a low-voltage power line, and 8 represents a high-voltage power line.

[0038] The dual-pressure type generator 4 is constituted as a so-called tandem type ...

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PUM

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Abstract

The present invention relates to a dual-voltage power supply device for vehicles. A dual-voltage type power supply device for a vehicle including a high-voltage power supply system and a low-voltage power supply system has a configuration in which a target power generation cost is individually calculated for each of the two power supply systems based on the SOC as a variable of its own battery, so that the two Each of the power supply systems individually performs power cost reduction type power generation control.

Description

[0001] Cross References to Related Applications [0002] This application is related to Japanese Patent Application No. 2006-339925 filed on December 18, 2006, the contents of which are incorporated herein by reference. technical field [0003] The present invention relates to a dual-voltage type power supply device for a vehicle, which includes a plurality of power supply systems, each having a generator and a battery, and each serving to supply a different voltage. Background technique [0004] Improving the fuel consumption of vehicles has become more and more important in recent years because of skyrocketing fuel prices. In order to improve the fuel cost of the vehicle, the applicant of the present invention proposed power cost reduction type power generation control in which the target power generation cost CP is calculated as a function of the SOC (state of charge) of the battery, and when the power generation cost Cg is lower than the calculated target power generatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L11/12H01M10/44B60L50/10B60L50/15B60L50/16
CPCH02J7/1423Y02T10/84
Inventor 青山洁田村博志加藤章
Owner DENSO CORP
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