Vehicle power source device

A technology for power supply devices and vehicles, which is applied in the direction of power consumption devices, vehicle energy storage, control devices, etc., which can solve the problems of unavailable supply and reduced residual capacity, and achieve the effect of reliable connection

Inactive Publication Date: 2014-03-12
AUTONETWORKS TECH LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, if the remaining capacity of the low-voltage auxiliary battery 6 decreases, the power supply circuit 41 cannot supply the electric power that the relay control unit 40 can excite the relay coil.

Method used

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Examples

Experimental program
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Embodiment Construction

[0033] Hereinafter, the present invention will be described in detail based on the drawings showing the embodiments thereof.

[0034] figure 2 It is a block diagram showing the configuration of main parts of an embodiment of the vehicle power supply device according to the present invention.

[0035] This vehicle power supply unit includes a high-voltage load 1 , a high-voltage battery 2 (first battery) that supplies power to the high-voltage load 1 , and a relay contact 3 (switch) connected between the high-voltage load 1 and the positive terminal of the high-voltage battery 2 . The high-voltage load 1 has a drive motor 1 a and a circuit attached to the drive motor 1 a, and supplies power to the high-voltage load 1 from a high-voltage battery 2 through a relay contact 3 . In addition, in the hybrid vehicle, the high-voltage load 1 also functions as a generator linked to an engine (not shown). The high-voltage battery 2 is, for example, a nickel-hydrogen battery in which a ...

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PUM

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Abstract

Provided is a vehicle power source device wherein it is possible to reliably turn on a high-voltage battery even if the output voltage of a low-voltage ancillary battery drops at the start of driving the vehicle. A request to turn on a high-voltage battery (2) (to turn on a relay contact point (3)) is made by means of the operation to start driving a vehicle. A low-voltage ancillary battery (6) and an auxiliary battery (10) supply power to a power source circuit (41). A relay control unit (40) supplied with power from the power source circuit (41) turns on the relay contact point (3) and turns on the high-voltage battery (2). When the high-voltage battery (2) is on, the auxiliary battery (10) is charged by means of a step-down circuit (70). The auxiliary battery (10) holds the charged power by means of a diode (8) without the power being consumed by a group of low-voltage loads (5).

Description

technical field [0001] The present invention relates to a power supply device for a vehicle, which is used in a hybrid vehicle or an electric vehicle, and has a high-voltage battery for supplying power to a driving motor. Background technique [0002] A hybrid vehicle or an electric vehicle has a drive motor and a high-voltage battery that supplies power to the drive motor. A relay contact is provided on the wiring of the driving motor and the high-voltage battery, and the relay contact is turned on or off according to the operation to start or end the operation. [0003] figure 1 It is a block diagram illustrating the configuration of main parts of a conventional vehicle power supply device used in a hybrid vehicle or an electric vehicle. A conventional power supply device for a vehicle comprises: a driving motor 1a and a high-voltage load 1 that is a circuit attached to the driving motor 1a; a high-voltage battery 2 that supplies power to the high-voltage load 1; Relay ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L3/00B60L11/18
CPCY02T10/7066B60L11/1868B60L3/0092Y02T10/7005B60L2240/547B60L1/00B60L15/20B60L58/12B60L58/20B60L2210/12B60L2260/22B60L2260/26Y02T10/64Y02T10/70Y02T10/72
Inventor 吉见信彦
Owner AUTONETWORKS TECH LTD
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