Connector detecting device and connector detecting method

Abstract

The invention discloses a connector detecting device. The connector detecting device comprises a controller, a power supply managing system, a warning indication system, a first connector and a second connector. The power supply managing system and the warning indication system are respectively connected with the controller, the first connector is connected with the second connector through a difference detecting line ADC P, the second connector is connected with the controller through a difference detecting line ADC N, and the power supply managing system is electrically connected with the first connector. Therefore, contact resistance between the connectors can be indirectly detected by detecting pressure difference between the difference detecting line ADC P and the difference detecting line ADC N, accordingly abnormal contact of the connectors in the using process can be ensured to be detected, the connectors are protected and prevented from being burned out due to poor contact in the frequent using process, and safety of large-current connectors is ensured. In addition, the invention further discloses a connector detecting method. The connector detecting method has same effect.

Description

technical field [0001] The invention relates to a detection device for a connector, in particular to a detection device and a detection method for detecting the contact state of a connector passing through a high current. Background technique [0002] With the development of mobile communication technology and the increase of user demands, various portable mobile communication terminals (such as mobile phones, tablet computers, etc.) are becoming more and more popular. Taking a mobile phone as an example, due to structural limitations or functional requirements when designing a mobile phone, it is necessary to have some interfaces that pass through a large current (such as battery interfaces, charging interfaces, etc.), and these interfaces need to pass through a large current. Forms a connector through which high current flows. The material of the interface on the above-mentioned mobile phone is usually metal copper foil, and there are various forms such as thimble and shr...

AI Technical Summary

Problems solved by technology

The material of the interface on the above-mentioned mobile phone is usually metal copper foil, and there are various forms such as thimble and shrapnel in form. The connection of these interfaces has a certain contact resistance, generally ranging from several milliohms to tens of milliohms, but If there are some abnormalities, such as dirty contact points, the contact resistance will be greatly increased, making the contact resistance reach more than 100 milliohms

[0003] Under normal circumstances, when the current is less than 1A, the above-mentioned poor contact is allowed. Taking 100 milliohms as an example, the voltage drop is 0.1V, and the heat generation is only 0.1W, which does not have much impact on the circuit; and for those who need Through a high-current connector, for example, through a 10A current, even if there is only a contact resistance of 20 milliohms, it will generate 2W of heat. Once the heat cannot be removed in time, it will cause the temperature to rise and burn the connector.

[0004] For the above-mentioned connectors that need to pass through a large current, in the current use, the contact status has not been detected in real time. Therefore, once there is a bad contact, if the user continues to use it without knowing it, it will seriously heat up and burn the connection. connector, shortening the service life of the connector

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