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High-voltage and low-voltage interlocking device and method for realizing power on and off by using it

An interlocking device, high and low voltage technology, applied in the circuit field, to achieve the effect of ensuring the safety of electricity consumption and ensuring the status monitoring time

Active Publication Date: 2018-12-07
CHINA NORTH VEHICLE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is: how to ensure the normal power-on and power-off of high and low voltage, and prevent potential safety hazards caused by misoperation

Method used

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  • High-voltage and low-voltage interlocking device and method for realizing power on and off by using it
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  • High-voltage and low-voltage interlocking device and method for realizing power on and off by using it

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Embodiment Construction

[0037] In order to make the purpose, content, and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0038] The voltage interlock device provided by the present invention includes a high-voltage system and a low-voltage system, and the low-voltage system is connected such as figure 1 As shown, it mainly includes a low-voltage switch 2 , an interlock switch 3 , a controller 4 and a low-voltage battery 1 . One end (power supply end) of the controller 4 is connected to the positive pole of the low-voltage battery 1 through the low-voltage switch 2 and the interlock switch 3 , and the other end is connected to the negative pole of the battery 1 . Interlock switch 3 and low voltage switch 2 are connected in parallel. The low-voltage switch 2 is a manual switch on the vehicle, and the interlock switch 3 is controlled by th...

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Abstract

The invention relates to a high and low voltage interlocking device and a method of using the device for realizing power on and power off, which belong to the technical field of circuits. An interlocking switch is parallelly connected onto a low voltage switch, power failure of a low voltage system caused by sudden cutoff of the low voltage switch is prevented, the controller power on and power off state monitoring time is ensured, first low voltage power on and then high voltage power on are realized in the case of power on, and in the case of power off, first high voltage power off and then lower voltage power off are realized, and power safety in the case of power on and power off can be effectively ensured.

Description

technical field [0001] The invention relates to the technical field of circuits, in particular to a high-voltage and low-voltage interlock device and a method for realizing power on and off by using it. Background technique [0002] Electric vehicles are developing rapidly in my country, and the power battery voltage is relatively high, which is potentially unsafe. Generally speaking, an electric vehicle has a high-voltage power battery pack and a low-voltage lead-acid battery for power supply and low-voltage equipment such as a controller. During the operation of the vehicle, there are strict regulations on the power-on and power-off sequence of the high-voltage and low-voltage circuits of the vehicle, so as to ensure the normal fault diagnosis of the controller and the normal closing of the relay, so as to avoid safety accidents or damage to electrical equipment. [0003] At present, the power-on and power-on sequence of electric vehicles is guaranteed by software. After ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H01M10/44B60L3/00
CPCB60L3/00H01M10/446H02J7/00H02J7/0036Y02E60/10
Inventor 刘胜利高峰戚于飞张思宁宋克岭倪永亮蒋任君
Owner CHINA NORTH VEHICLE RES INST
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