Large-current connector safety monitoring method

A technology for safety monitoring and connectors, applied in electrical components, circuits, connections, etc., to solve problems such as hidden safety hazards, heating of plugs and sockets, and increased contact resistance.

Inactive Publication Date: 2011-05-18
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: when the high-current connector is working, the contact resistance increases due to factors such as poor contact of the plug and socket or poor surface finish, which in turn causes the plug and socket to heat up and cause safety hazards.

Method used

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Examples

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Embodiment

[0011] Such as figure 1 Shown is a schematic diagram of the DC interface interface of the vehicle-mounted power battery of the present invention, including power supply equipment (charger) and its charging plug, and the vehicle-mounted power battery and its charging socket. Both the charging plug and the charging socket include a DC input terminal and a DC output - terminal, equipment ground terminal, low-voltage auxiliary power supply 12 / 24V+ terminal, low-voltage auxiliary power supply 12 / 24V- terminal, temperature sensor interface T0 and T1 terminals. When charging, the plug is connected to the corresponding port of the socket, and the temperature sensor interface T0 and T1 are connected to the safety monitoring and control system, and the temperature signal is continuously output.

[0012] Such as figure 2 Shown is the block diagram of the safety monitoring control system. During the charging process, the temperature sensor continuously outputs temperature signals and se...

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Abstract

The invention discloses a large-current connector safety monitoring method, and belongs to the technical field of electrical engineering. The large-current connector safety monitoring method is characterized in that: a temperature sensor is arranged in a plug or socket of a large-current connector, and a safety monitoring control system uninterruptedly acquires signals of the temperature sensor and sends the signals to a signal processing module; the signal processing module analyzes and calculates the signals to output real-time temperature T; an overtemperature judgment module judges whether the connector is overheat according to the temperature T, sends an overtemperature signal if the T is greater than set temperature, and does not send the overtemperature signal if the T is not greater than the set temperature; and an alarm execution module starts an alarm device and immediately cut off a power source after receiving the overtemperature signal. The large-current connector safety monitoring method has the advantage of eliminating potential safety hazards such as interface burning due to heat generation of the plug and socket when the large-current connector works, and even electrical fire.

Description

technical field [0001] The invention belongs to the technical field of electrical engineering and relates to a safety monitoring method, in particular to a safety monitoring method of a high-current connector. Background technique [0002] At present, high-current connectors have been increasingly used in electrical engineering, automotive engineering and other fields. However, in the process of use, long-term plugging and unplugging of connector plugs and sockets will inevitably cause wear and tear on the plugs and sockets, and loosening will occur, resulting in a decrease in contact pressure and an increase in contact resistance; Moreover, dust, oil stains, etc. will also deteriorate the surface finish, resulting in a smaller effective contact area and an increase in contact resistance. Because the high-current connector has the characteristics of long working time, high voltage and large current, the increase of contact resistance will cause the plug and socket to heat u...

Claims

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Application Information

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IPC IPC(8): H02H5/04H02H3/04G01K13/00H01R24/00
Inventor 周雅夫连静沈晓勇李琳辉孙新函迟春华
Owner DALIAN UNIV OF TECH
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