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Operation vehicle and electricity leakage detecting method thereof

A technology of working vehicles and detection methods, which is applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of complicated circuits and difficult leakage detection, and achieve the effect of simple circuit composition

Inactive Publication Date: 2014-01-01
SHIN MEIWA IND CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, it is difficult to detect electric leakage by simply monitoring the change of voltage, and the circuit for electric leakage detection becomes complicated

Method used

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  • Operation vehicle and electricity leakage detecting method thereof
  • Operation vehicle and electricity leakage detecting method thereof
  • Operation vehicle and electricity leakage detecting method thereof

Examples

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Embodiment Construction

[0022] figure 1 It is a schematic configuration diagram showing a part of an electric circuit of a garbage truck as a work vehicle in an embodiment of the present invention. exist figure 1 Among them, the garbage truck as a working vehicle in the embodiment of the present invention includes: a load circuit 1 driven by electric power; a capacitor 2 as a power storage device for storing electric power supplied to the load circuit 1; a charging circuit 3 for charging the capacitor 2; And a leakage detection circuit 4 for detecting the leakage of the capacitor 2 .

[0023] In addition, although the details of the garbage truck of this embodiment are not shown in the figure, it includes a garbage storage box installed behind the driver's cab and a garbage input box installed at the rear of the garbage storage box, similarly to a normal garbage truck. In the garbage input box, a garbage loading device is installed as an operating device. The garbage loading device is composed of a...

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Abstract

The invention provides an operation vehicle and an electricity leakage detecting method thereof employing a simple circuit for judging electricity leakage with high precision. The operation vehicle is provided with a leakage detecting part (5) used for leakage detection of the electric capacitor; a circuit transferring switch cutting the capacitor (2) from a load circuit (1) and connecting the leakage detecting part (5) to the capacitor and besides cutting the leakage detecting part (5) from the capacitor and connecting the capacitor (2) to the load circuit (1); and a microcontroller making the circuit transferring switch (SW) to work, cutting the capacitor (2) off from the load circuit (1) and connecting the leakage detecting part (5) to the capacitor (2) when that the capacitor (2) is fully charged and current of the load circuit (1) is zero are detected, making the circuit transferring switch work, cutting the leakage detecting part (5) off from the capacitor (2) and connecting the capacitor (2) to the load circuit (1) after leakage detection of the capacitor is done by the leakage detecting part (5).

Description

technical field [0001] The present invention relates to a work vehicle having a load circuit driven by electric power stored in a power storage device and an electric leakage detection method thereof. Background technique [0002] Conventionally, electric systems using power storage devices have been widely used in various work vehicles such as battery-powered fork-lift trucks, hybrid shovels, electric aerial work vehicles, hybrid cranes, and railway vehicles. For example, the hybrid vehicle described in Patent Document 1 includes a generator driven by an engine, a power storage device that stores the output of the generator, and an electric motor that is driven by an electric motor that is stored in the power storage device. The drive unit rotates the drum by an electric drive unit. [0003] However, in this type of work vehicle, the voltage of the power storage device is higher than that of a lead battery mounted on a normal gasoline engine. Therefore, a work vehicle equ...

Claims

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Application Information

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IPC IPC(8): G01R31/02
Inventor 寿美田雅明上田雅夫稻井惠一
Owner SHIN MEIWA IND CO LTD
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