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Interlock apparatus for high-voltage device

A technology for high-voltage equipment and interlocking devices, which is applied to electrical devices, coupling devices, parts of connecting devices, etc., and can solve problems such as inability to accurately detect connector disengagement.

Active Publication Date: 2020-05-01
三电株式会社
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] As mentioned above, the conventional interlock device has the problem that, although it is possible to detect the disengagement of the connector, it cannot be detected when the interlock ring is short-circuited to power or ground, or when the interlock device itself fails. , the connector detachment cannot be accurately detected

Method used

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  • Interlock apparatus for high-voltage device
  • Interlock apparatus for high-voltage device
  • Interlock apparatus for high-voltage device

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Embodiment Construction

[0027] Hereinafter, embodiments of the present invention will be described in detail based on the drawings. figure 1 Functional blocks constituting an inverter 1 for an electric compressor constituting a vehicle air conditioner as a high-voltage device to which the present invention is applied are shown. figure 1 Among them, 2 is the motor driving the electric compressor, which is driven by the inverter output circuit 3. 4 is a high voltage detection sensor, 6 is a filter / capacitor, and these are connected to the HV battery 8 which is a high voltage power supply mounted in a vehicle via the HV connector 7.

[0028] In addition, 9 is a controller composed of a microcomputer, and the motor 2 of the electric compressor is driven and controlled by the controller 9 . The controller 9 is connected to a LIN transceiver (transceiver) 13 via a bidirectional digital isolator 11 and an optical coupler 12, and the LIN transceiver 13 is connected to a not-shown The controller (ECU) on th...

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PUM

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Abstract

Provided is an interlock apparatus for a high-voltage device, the apparatus being capable of accurately detecting separation of a connector as an unsafe condition (connector disconnection, failure, orthe like) even when the interlock apparatus itself, including an interlock loop, has failed. The present invention is provided with: an interlock loop 16 that is linked to an HV connector 7 for connecting an electric compressor to an HV battery 8; a voltage level generation unit that generates a voltage level that differs in accordance with the condition of the interlock loop; a voltage level determination unit that outputs a determination result (L / H signal) in accordance with the voltage level generated by the voltage level generation unit; and a controller 9 that outputs the L / H signal anddiagnoses the condition of the interlock loop on the basis of the output of the voltage level determination unit.

Description

technical field [0001] The present invention relates to an interlock device for detecting disengagement of a connector that connects high-voltage equipment such as an electric compressor mounted on a vehicle to a high-voltage power supply. Background technique [0002] For example, an electric compressor constituting an air conditioner of a vehicle is connected to a high-voltage power source (HV battery) using a connector (HV connector). If the connector is detached, there is a risk of accidents such as electric shock. Therefore, in order to detect the detachment of the connector, an interlock ring of an interlock device is conventionally provided together with the connector. [0003] Furthermore, the interlock ring also becomes a closed circuit and an open circuit according to connection and disconnection (disconnection) of the connector. It is configured to output a fixed level signal (H level or L level) from the controller to the interlock ring, and the interlock ring b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R16/02B60L1/00B60L3/00H01R13/66
CPCB60L1/00B60L3/0038
Inventor 吉田浩
Owner 三电株式会社