Detection circuit for power relay of vehicle-mounted charger, vehicle-mounted charger, and vehicle

A technology for power relays and on-board chargers, applied in electric vehicles, battery circuit devices, electric vehicle charging technology, etc., can solve problems such as damage to the whole machine, and achieve the effect of avoiding damage to the whole machine

Inactive Publication Date: 2017-10-27
BEIJING ELECTRIC VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above technical problems, the present invention provides a detection circuit for the power relay of the on-board charger, the on-board charger and the automobile, which solves the problem that the whole machine may be damaged due to the potential failure of the power relay of the on-board charger

Method used

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  • Detection circuit for power relay of vehicle-mounted charger, vehicle-mounted charger, and vehicle
  • Detection circuit for power relay of vehicle-mounted charger, vehicle-mounted charger, and vehicle

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Embodiment Construction

[0043] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0044] Such as figure 1 As shown, the embodiment of the present invention provides a detection circuit for the power relay of the on-board charger, including: a power relay 1; a power supply circuit 2 and a detection circuit 3 connected to the power relay 1; 3 connected detection controllers;

[0045] Wherein, the detection controller detects a high level through the power supply circuit 2, the power relay 1 and the detection circuit 3, and de...

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Abstract

The invention discloses a detection circuit for a power relay of a vehicle-mounted charger, the vehicle-mounted charger, and a vehicle. The detection circuit comprises the power relay; a power supply circuit and a detection circuit, which are connected with the power relay; and a detection controller which is connected with the detection circuit. The detection controller determines that the power relay works normally when the detection controller detects a high level during the connection of the power supply circuit, the power relay and the detection circuit and detects a low level during the disconnection of the power supply circuit, the power relay and the detection circuit. The detection circuit can effectively detect the quality of the power relay, and prevents the damage of the power relay from causing the damages to the whole unit.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a detection circuit for a power relay of a vehicle-mounted charger, a vehicle-mounted charger and an automobile. Background technique [0002] At present, electric vehicles are generally charged by on-board chargers. If the on-board charger fails, it will cause serious damage to the battery system of the vehicle. Therefore, the protection device of the on-board charger must be perfect, because the technology of switching power supply is mature and the work efficiency is high. , the input voltage range is relatively wide, and the on-board chargers all use the circuit structure of switching power supply. The power relay of the on-board charger plays a pivotal role in the charger. Because it needs to close and cut off the high voltage and large current, if there is a hidden trouble, it is likely that the on-board charger will be damaged due to the damage of the power relay...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/327G01R31/00H02J7/00B60L11/18
CPCB60L53/00G01R31/007G01R31/3275H02J7/00Y02T10/70Y02T10/7072Y02T90/14
Inventor 阎交生庄启超李志猛肖胜然鲁卫申王云钊陈泓泽
Owner BEIJING ELECTRIC VEHICLE
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