Power supply connector, communication equipment, power distribution equipment and wireless communication system

Abstract

The invention provides a power supply connector, communication equipment, power distribution equipment and a wireless communication system. The power supply connector comprises a positive power supply terminal, a negative power supply terminal, a male head signal terminal and a sampling unit. Wherein the sampling unit is used for detecting working parameters of the power supply connector and outputting the working parameters to the male head signal terminal. Furthermore, the male head signal terminal is used for outputting working parameters to the female head signal terminal, and the working parameters are used for determining whether the connection state of the power supply connector is an abnormal state or not. The connection state of the power connector comprises at least one of the connection state of the positive power terminal and the positive wire and the connection state of the negative power terminal and the negative wire. In the application, whether the connection state of the power supply connector is the abnormal state is identified in advance by detecting the working parameters of the power supply connector, so that heating carbonization of the power supply connector can be avoided, and the reliability of the power supply connector is improved.

Description

Technical Field

[0001] The present application relates to the field of wireless communications, and in particular to a power connector, communication equipment, power distribution equipment and a wireless communication system. Background Art

[0002] Due to the complex deployment environment of base station equipment and the different lengths of power cables for powering base station equipment, on-site wiring is usually used to connect the power cables to the connectors to provide power to the base station equipment.

[0003] At present, construction workers use cold-pressed terminals, screw crimping, spring clamping, and wire stripping-free crimping to connect the positive wire in the power cord to the positive terminal in the connector, and the negative wire in the power cord to the negative terminal in the connector, thereby achieving the connection between the power cord and the connector. However, when construction workers do a poor job of wiring, it will cause poor contact between the power cord and the connector, causing the connector to heat up and carbonize, or even burn the entire base station equipment. Therefore, how to identify poor contact between the power cord and the connector in advance is one of the problems we need to solve. Summary of the invention

[0004] The present application provides a power connector, communication equipment, power distribution equipment and wireless communication system, which can identify in advance whether the connection state of the power connector is abnormal by detecting the working parameters of the power connector, thereby avoiding heating and carbonization of the power connector, thereby improving the reliability of the power connector.

[0005] In a first aspect, the present application provides a power connector, which includes a positive power terminal, a negative power terminal, a male signal terminal, and a sampling unit. The first end of the positive power terminal is used to connect to the positive wire in the power cable, the first end of the negative power terminal is used to connect to the negative wire in the power cable, the sampling unit is connected to the first end of the male signal terminal, and the second end of the male signal terminal is used to connect to the female signal terminal in the device connector, which can be a device connector in any electrical device. The number of signal terminals in the male signal terminal can be one or more, and the number of signal terminals in the female signal terminal can be one or more. In addition, the signal terminals in the male signal terminal correspond to the signal terminals in the female signal terminal one by one. The sampling unit is used to detect the working parameters of the power connector and to output the working parameters to the male signal terminal. Further, the male signal terminal is used to output the working parameters to the female signal terminal, wherein the working parameters are used to determine whether the connection state of the power connector is an abnormal state. The connection state of the power connector includes at least one of the connection state between the positive power terminal and the positive wire and the connection state between the negative power terminal and the negative wire. By implementing the embodiments of the present application, the working parameters of the power connector are detected to identify in advance whether the connection state of the power connector is abnormal, which can avoid heating and carbonization of the power connector, thereby improving the reliability of the power connector.

[0006] In combination with the first aspect, in a first possible implementation, the sampling unit includes a temperature detection element, which can be arranged between a first connection position and a second connection position, the first connection position being the connection position between the positive power supply terminal and the positive wire, and the second connection position being the connection position between the negative power supply terminal and the negative wire. At this time, the operating parameter is the temperature at the location of the temperature detection element, and the temperature at the location of the temperature detection element is close to the larger temperature of the temperature at the first connection position and the temperature at the second connection position. When the temperature at the location of the temperature detection element is greater than or equal to the first threshold, the connection state of the power connector is an abnormal state, that is, the power connector and the power cable are in poor contact at this time. In the implementation of the embodiment of the present application, since heat is generated when the power connector and the power cable are in poor contact, the local temperature near at least one of the first connection position and the second connection position increases, so by detecting the temperature at the location of the temperature detection element to identify in advance whether the power connector and the power cable are in poor contact, the most accurate detection feedback effect can be achieved, thereby improving the reliability of the power connector and lowering the cost.

[0007] In combination with the first aspect, in a second possible implementation, the sampling unit includes a first temperature detection element and a second temperature detection element, the first temperature detection element can be arranged on a side of the first connection position away from the second connection position, and the second temperature detection element can be arranged on a side of the second connection position away from the first connection position. Wherein, the first connection position is the connection position between the positive power supply terminal and the positive wire, and the second connection position is the connection position between the negative power supply terminal and the negative wire. The male signal terminal includes a male positive signal terminal and a male negative signal terminal, and the female signal terminal includes a female positive signal terminal and a female negative signal terminal. Wherein, the first temperature detection element is connected to the first end of the male positive signal terminal, and the second end of the male positive signal terminal is used to connect to the female positive signal terminal, and the second temperature detection element is connected to the first end of the male negative signal terminal, and the second end of the male negative signal terminal is used to connect to the female negative signal terminal.

[0008] In combination with the second possible implementation of the first aspect, in a third possible implementation, the above-mentioned operating parameters include a first temperature at a location where the first temperature detection element is located and a second temperature at a location where the second temperature detection element is located, and the connection state of the power connector includes at least one of a connection state between the positive power terminal and the positive wire, and a connection state between the negative power terminal and the negative wire. The first temperature detection element is used to detect the first temperature, and is used to output the first temperature through the male positive signal terminal, wherein the first temperature is close to the temperature of the first connection position. The second temperature detection element is used to detect the second temperature, and is used to output the second temperature through the male negative signal terminal, wherein the second temperature is close to the temperature of the second connection position. When the first temperature is greater than or equal to the second threshold value, the connection state between the positive power terminal and the positive wire is an abnormal state, that is, the positive power terminal and the positive wire are in poor contact at this time. When the second temperature is greater than or equal to the third threshold value, the connection state between the negative power terminal and the negative wire is an abnormal state, that is, the negative power terminal and the negative wire are in poor contact at this time. In implementing the embodiments of the present application, heat is generated when the power connector and the power cable are in poor contact, thereby causing a local temperature increase near at least one of the first connection position and the second connection position. Therefore, by detecting the first temperature to identify in advance whether the positive power terminal and the positive wire are in poor contact, and by detecting the second temperature to identify in advance whether the negative power terminal and the negative wire are in poor contact, the most accurate detection feedback effect can be achieved, and abnormal detection on the positive side and abnormal detection on the negative side can be taken into account at the same time, further improving the reliability of the power connector and achieving higher accuracy in abnormal detection.

[0009] In combination with the first aspect, in a fourth possible implementation, the sampling unit includes a first positive probe, a second positive probe, a first negative probe, and a second negative probe. The male signal terminal includes a first male positive signal terminal, a second male positive signal terminal, a first male negative signal terminal, and a second male negative signal terminal. The female signal terminal includes a first female positive signal terminal, a second female positive signal terminal, a first female negative signal terminal, and a second female negative signal terminal. Among them, the first positive probe can be arranged between the positive wire and the first end of the first male positive signal terminal, and the second end of the first male positive signal terminal is used to connect with the first female positive signal terminal. The second positive probe can be arranged between the second end of the positive power supply terminal and the first end of the second male positive signal terminal, and the second end of the second male positive signal terminal is used to connect with the second female positive signal terminal. The first negative probe can be arranged between the negative wire and the first end of the first male negative signal terminal, and the second end of the first male negative signal terminal is used to connect with the first female negative signal terminal. The second negative probe may be disposed between the second end of the negative power terminal and the first end of the second male negative signal terminal, and the second end of the second male negative signal terminal is used to connect to the second female negative signal terminal.

[0010] In combination with the fourth possible implementation of the first aspect, in a fifth possible implementation, the above-mentioned working parameters include a first positive voltage of the positive wire and a second positive voltage of the positive power terminal, and the connection state of the power connector includes a connection state between the positive power terminal and the positive wire. The first positive probe is used to detect the first positive voltage and to output the first positive voltage through the first male positive signal terminal. The second positive probe is used to detect the second positive voltage and to output the second positive voltage through the second male positive signal terminal. Among them, the first positive voltage and the second positive voltage are used to determine the positive voltage drop at the first connection position, which is the connection position between the positive power terminal and the positive wire. The positive voltage drop can be the voltage difference between the first positive voltage and the second positive voltage, or the positive voltage drop can be the amplified positive voltage drop obtained by amplifying the voltage difference between the first positive voltage and the second positive voltage. When the positive voltage drop is greater than or equal to the fourth threshold, the connection state between the positive power terminal and the positive wire is an abnormal state, that is, the positive power terminal and the positive wire are in poor contact at this time. When implementing the embodiment of the present application, since the positive voltage drop at the first connection position will increase when the positive power terminal and the positive wire are in poor contact, whether the positive power terminal and the positive wire are in poor contact can be identified in advance by detecting the first positive voltage and the second positive voltage, and there is no need to wait for the heat accumulation process at the first connection position. The abnormality detection speed on the positive side is faster and safer.

[0011] In combination with the fourth possible implementation of the first aspect or the fifth possible implementation of the first aspect, in a sixth possible implementation, the above-mentioned working parameters also include the first negative voltage of the negative wire and the second negative voltage of the negative power supply terminal, and the connection state of the power connector also includes the connection state of the negative power supply terminal and the negative wire. The first negative probe is used to detect the first negative voltage and to output the first negative voltage through the first male negative signal terminal. The second negative probe is used to detect the second negative voltage and to output the second negative voltage through the second male negative signal terminal. Among them, the first negative voltage and the second negative voltage are used to determine the negative voltage drop of the second connection position, and the second connection position is the connection position between the negative power terminal and the negative wire. The negative voltage drop can be the voltage difference between the first negative voltage and the second negative voltage, or the negative voltage drop can be the amplified negative voltage drop obtained by amplifying the voltage difference between the first negative voltage and the second negative voltage. When the negative voltage drop is greater than or equal to the fifth threshold, the connection state of the negative power terminal and the negative wire is an abnormal state, that is, the negative power terminal and the negative wire are in poor contact at this time. When implementing the embodiment of the present application, since the negative voltage drop at the second connection position will increase when the negative power terminal and the negative wire are in poor contact, by detecting the first negative voltage and the second negative voltage, it is possible to identify in advance whether the negative power terminal and the negative wire are in poor contact, and there is no need to wait for the heat accumulation process at the second connection position. The abnormality detection speed on the negative side is faster and safer.

[0012] In combination with any one of the first aspect to the fifth possible implementation of the first aspect, in a seventh possible implementation, the power connector further includes a switch, the male signal terminal includes a male switch signal terminal, and the female signal terminal includes a female switch signal terminal. The switch can be arranged between the first end of the positive power terminal and the positive wire, or the switch can also be arranged between the first end of the negative power terminal and the negative wire. In addition, the control end of the switch is connected to the first end of the male switch signal terminal, and the second end of the male switch signal terminal is used to connect to the female switch signal terminal. After the connection state of the power connector is abnormal, the male switch signal terminal is used to receive a low-level signal from the female switch signal terminal, wherein the low-level signal is used to control the switch to disconnect. At this time, no current will flow through the power connector, which can avoid further increases in the temperature of the first connection position and the temperature of the second connection position, thereby ensuring that the power connector will not further heat up and carbonize, and has higher safety.

[0013] In a second aspect, the present application provides a communication device, which includes a device connector and a control unit, wherein the device connector includes a positive jack terminal, a negative jack terminal and a female signal terminal. The positive jack terminal is used to plug with the positive power terminal in the power connector, and the negative jack terminal is used to plug with the negative power terminal in the power connector. The number of signal terminals in the female signal terminal may be one or more, and the number of signal terminals in the male signal terminal may be one or more. Moreover, the signal terminals in the female signal terminal correspond to the signal terminals in the male signal terminal one by one. The female signal terminal is used to receive the working parameters of the power connector from the male signal terminal in the power connector, and to output the working parameters to the control unit. The working parameters may be temperature or voltage, and are detected by a sampling unit inside the power connector. Further, the control unit is used to determine whether the connection state of the power connector is an abnormal state based on the working parameters. The connection state of the power connector includes at least one of the connection state between the positive power terminal and the positive wire in the power cable, and the connection state between the negative power terminal and the negative wire in the power cable. By implementing the embodiments of the present application, it is possible to identify in advance whether the connection status of the power connector is abnormal based on the working parameters of the power connector, thereby preventing the power connector from heating up and carbonizing or even burning the communication device, thereby improving the safety of the communication device.

[0014] In combination with the second aspect, in a first possible implementation manner, the above-mentioned working parameter is the temperature of any position between the first connection position and the second connection position, and the temperature of any position is close to the larger temperature of the temperature of the first connection position and the temperature of the second connection position. Among them, the first connection position is the connection position between the positive power terminal and the positive wire in the power cable, and the second connection position is the connection position between the negative power terminal and the negative wire in the power cable. The above-mentioned control unit is used to determine whether the connection state of the power connector is an abnormal state, and the abnormal state includes that the temperature of any position is greater than or equal to the first threshold value, and at this time, the power connector and the power cable are in poor contact. When implementing the embodiment of the present application, since the local temperature near at least one of the first connection position and the second connection position will increase when the power connector and the power cable are in poor contact, therefore, detecting whether the connection state of the power connector is an abnormal state based on the temperature of any position can improve the accuracy of abnormality detection, thereby improving the safety of use of the communication device.

[0015] In combination with the second aspect, in a second possible implementation, the female signal terminal includes a female positive signal terminal and a female negative signal terminal, and the male signal terminal includes a male positive signal terminal and a male negative signal terminal. The female positive signal terminal is used to connect to the male positive signal terminal, and the female negative signal terminal is used to connect to the male negative signal terminal. The above-mentioned working parameters include a first temperature at any position on the side of the first connection position away from the second connection position, and the first temperature is close to the temperature of the first connection position. The first connection position is the connection position between the positive power terminal and the positive wire in the power cable, and the second connection position is the connection position between the negative power terminal and the negative wire in the power cable. The connection state of the power connector includes the connection state of the positive power terminal and the positive wire. The female positive signal terminal is used to receive the first temperature from the male positive signal terminal, and is used to output the first temperature to the control unit. Further, the control unit is used to determine whether the connection state between the positive power terminal and the positive wire is an abnormal state, and the abnormal state includes that the first temperature is greater than or equal to the second threshold value, and at this time, the positive power terminal and the positive wire are in poor contact. When implementing the embodiment of the present application, since poor contact between the positive power terminal and the positive wire will cause a local temperature increase near the first connection position, detecting whether the connection state between the positive power terminal and the positive wire is abnormal based on the first temperature can improve the accuracy of abnormality detection on the positive side, thereby improving the safety of use of the communication device.

[0016] In combination with the second possible implementation of the second aspect, in a third possible implementation, the above-mentioned working parameters also include a second temperature at any position on the side of the second connection position away from the first connection position, and the connection state of the power connector also includes the connection state of the negative power terminal and the negative wire. The female negative signal terminal is used to receive the second temperature from the male negative signal terminal, and is used to output the second temperature to the control unit, and the second temperature is close to the temperature of the second connection position. Further, the control unit is used to determine whether the connection state of the negative power terminal and the negative wire is an abnormal state, and the abnormal state includes that the second temperature is greater than or equal to the third threshold value, and the negative power terminal and the negative wire are in poor contact. In the implementation of the embodiment of the present application, since the local temperature near the second connection position will increase when the negative power terminal and the negative wire are in poor contact, the connection state of the negative power terminal and the negative wire is detected based on the second temperature. Whether it is an abnormal state can improve the accuracy of abnormal detection on the negative side, thereby improving the safety of use of the communication device. In addition, the abnormal detection of the positive side and the abnormal detection of the negative side can be taken into account at the same time, and the detection method is more flexible and comprehensive.

[0017] In combination with the second aspect, in a fourth possible implementation, the female signal terminal includes a first female positive signal terminal, a second female positive signal terminal, a first female negative signal terminal and a second female negative signal terminal. The male signal terminal includes a first male positive signal terminal and a second male positive signal terminal, a first male negative signal terminal and a second male negative signal terminal. The control unit includes a differential amplifier circuit. Among them, the first end of the first female positive signal terminal is used to connect to the first male positive signal terminal, and the second end of the first female positive signal terminal is connected to the first positive input terminal of the differential amplifier circuit. The first end of the second female positive signal terminal is used to connect to the second male positive signal terminal, and the second end of the second female positive signal terminal is connected to the second positive input terminal of the differential amplifier circuit. The first end of the first female negative signal terminal is used to connect to the first male negative signal terminal, and the second end of the first female negative signal terminal is connected to the first negative input terminal of the differential amplifier circuit. The first end of the second female negative signal terminal is used to connect to the second male negative signal terminal, and the second end of the second female negative signal terminal is connected to the second negative input end of the differential amplifier circuit.

[0018] In combination with the fourth possible implementation of the second aspect, in a fifth possible implementation, the above-mentioned operating parameters include the first positive voltage of the positive conductor in the power cable and the second positive voltage of the positive power terminal, and the connection state of the power connector includes the connection state of the positive power terminal and the positive conductor. The above-mentioned control unit also includes a controller, wherein the differential amplifier circuit and the controller can be separately arranged, and the differential amplifier circuit can be arranged inside or outside the control unit. When the differential amplifier circuit is arranged outside the control unit, the controller is the control unit. Optionally, the differential amplifier circuit can also be integrated inside the controller, and the specific position of the differential amplifier circuit is not limited here. The above-mentioned first female positive signal terminal is used to receive the first positive voltage from the first male positive signal terminal, and is used to output the first positive voltage to the differential amplifier circuit. The second female positive signal terminal is used to receive the second positive voltage from the second male positive signal terminal, and is used to output the second positive voltage to the differential amplifier circuit. Further, the differential amplifier circuit is used to amplify the voltage difference between the first positive voltage and the second positive voltage to obtain an amplified positive voltage drop at a first connection position, and is used to output the amplified positive voltage drop to the controller, and the first connection position is the connection position between the positive power supply terminal and the positive wire. Among them, the voltage difference between the first positive voltage and the second positive voltage is the positive voltage drop at the first connection position. Further, the controller is used to determine whether the connection state between the positive power supply terminal and the positive wire is an abnormal state, and the abnormal state includes that the amplified positive voltage drop is greater than or equal to a fourth threshold value, and at this time, the positive power supply terminal and the positive wire are in poor contact.

[0019] In implementing the embodiment of the present application, since the positive voltage drop at the first connection position will increase but the value is small when the positive power terminal and the positive wire are in poor contact, the differential amplifier circuit can better detect the change process of the positive voltage drop after amplifying the positive voltage drop, and there is no need to wait for the heat accumulation process at the first connection position, thereby quickly identifying whether the connection state between the positive power terminal and the positive wire is an abnormal state, which can improve the accuracy and speed of abnormality detection on the positive side and improve the safety of use of communication equipment.

[0020] In combination with the fourth possible implementation of the second aspect or the fifth possible implementation of the second aspect, in a sixth possible implementation, the control unit further includes a current detection circuit, wherein the current detection circuit and the controller can be separately provided, and in this case the current detection circuit can be provided inside or outside the control unit. Optionally, the current detection circuit can also be integrated inside the controller, and the specific location of the current detection circuit is not limited here. The current detection circuit is used to detect the current of the positive jack terminal, and to output the current of the positive jack terminal to the controller. Since the current magnitude remains substantially unchanged during the process of the positive wire outputting the current to the positive jack terminal through the positive power terminal, the current of the positive jack terminal is the same as the current of the first connection position. Further, the controller is used to obtain the amplified positive impedance of the first connection position based on the amplified positive voltage drop and the current of the positive jack terminal, and to determine whether the connection state between the positive power terminal and the positive wire is an abnormal state, and the abnormal state includes that the amplified positive impedance is greater than or equal to the fifth threshold value, and at this time the positive power terminal is in poor contact with the positive wire. In implementing the embodiments of the present application, since the positive impedance at the first connection position will increase but the value is small when the positive power terminal and the positive wire are in poor contact, the change process of the positive impedance can be better detected after the amplified positive impedance is obtained based on the amplified positive voltage drop and the current of the positive jack terminal, and there is no need to wait for the heat accumulation process at the first connection position, thereby quickly identifying whether the connection state between the positive power terminal and the positive wire is an abnormal state, thereby improving the accuracy and speed of abnormality detection on the positive side and improving the safety of use of communication equipment.

[0021] In combination with any one of the fourth possible implementation of the second aspect to the sixth possible implementation of the second aspect, in a seventh possible implementation, the above-mentioned operating parameters also include a first negative voltage of the negative conductor in the power cable and a second negative voltage of the negative power terminal, and the connection state of the power connector also includes a connection state between the negative power terminal and the negative conductor. The first female negative signal terminal is used to receive the first negative voltage from the first male negative signal terminal, and is used to output the first negative voltage to the differential amplifier circuit. The second female negative signal terminal is used to receive the second negative voltage from the second male negative signal terminal, and is used to output the second negative voltage to the differential amplifier circuit. Further, the differential amplifier circuit is used to amplify the voltage difference between the first negative voltage and the second negative voltage to obtain an amplified negative voltage drop at a second connection position, and is used to output the amplified negative voltage drop to the controller, and the second connection position is the connection position between the negative power terminal and the negative conductor. Wherein, the voltage difference between the first negative voltage and the second negative voltage is the negative voltage drop at the second connection position. Furthermore, the controller is used to determine whether the connection state between the negative power terminal and the negative wire is an abnormal state, and the abnormal state includes that the amplified negative voltage drop is greater than or equal to a sixth threshold, and at this time the negative power terminal and the negative wire are in poor contact.

[0022] In the implementation of the embodiment of the present application, since the negative voltage drop at the second connection position will increase but the value is small when the negative power terminal and the negative wire are in poor contact, the differential amplifier circuit can better detect the change process of the negative voltage drop after amplifying the negative voltage drop, and there is no need to wait for the heat accumulation process at the second connection position, so as to quickly identify whether the connection state between the negative power terminal and the negative wire is abnormal, which can improve the accuracy and speed of abnormal detection on the negative side, thereby improving the safety of communication equipment. In addition, the abnormal detection on the positive side and the abnormal detection on the negative side can be taken into account at the same time, and the detection method is more flexible and comprehensive.

[0023] Optionally, in some feasible implementations, when the controller can directly detect the change process of the positive voltage drop and the negative voltage drop, the differential amplifier circuit may not be set in the control unit. In this case, the controller can compare the positive voltage drop with the preset positive voltage drop threshold to determine whether the connection state between the positive power supply terminal and the positive wire is abnormal, and compare the negative voltage drop with the preset negative voltage drop threshold to determine whether the connection state between the negative power supply terminal and the negative wire is abnormal. Among them, the preset positive voltage drop threshold is less than the fourth threshold, and the preset negative voltage drop threshold is less than the sixth threshold.

[0024] In combination with the seventh possible implementation of the second aspect, in an eighth possible implementation, the control unit further includes a current detection circuit. The current detection circuit is used to detect the current of the negative jack terminal, and is used to output the current of the negative jack terminal to the controller. Since the current magnitude remains substantially unchanged during the process in which the negative wire outputs the current to the negative jack terminal through the negative power terminal, the current of the negative jack terminal is the same as the current of the second connection position. Furthermore, the controller is used to obtain the amplified negative impedance of the second connection position based on the amplified negative voltage drop and the current of the negative jack terminal, and is used to determine whether the connection state between the negative power terminal and the negative wire is an abnormal state, and the abnormal state includes that the amplified negative impedance is greater than or equal to the seventh threshold value, and at this time, the negative power terminal is in poor contact with the negative wire. In the implementation of the embodiment of the present application, since the negative impedance of the second connection position will increase but the value is small when the negative power supply terminal is connected to the negative wire, the change process of the negative impedance can be better detected after the amplified negative impedance is obtained based on the amplified negative voltage drop and the current of the negative jack terminal, and there is no need to wait for the heat accumulation process at the second connection position, so as to quickly identify whether the connection state between the negative power supply terminal and the negative wire is an abnormal state, which can improve the accuracy and speed of abnormal detection on the negative side, thereby improving the safety of communication equipment. In addition, the abnormal detection on the positive side and the abnormal detection on the negative side can be taken into account at the same time, and the detection method is more flexible and comprehensive.

[0025] Optionally, in some feasible embodiments, when the controller can directly detect the change process of the negative voltage drop, the differential amplifier circuit may not be set in the control unit. At this time, the controller is used to obtain the positive impedance of the first connection position based on the positive voltage drop and the current of the positive jack terminal, and is used to compare the positive impedance with the preset positive impedance threshold to determine whether the connection state between the positive power supply terminal and the positive wire is an abnormal state. Among them, the preset positive impedance threshold is less than the fifth threshold. The controller is also used to obtain the negative impedance of the second connection position based on the negative voltage drop and the current of the negative jack terminal 501, and is used to compare the negative impedance with the preset negative impedance threshold to determine whether the connection state between the negative power supply terminal and the negative wire is an abnormal state. Among them, the preset negative impedance threshold is less than the seventh threshold.

[0026] In combination with the second aspect to the eighth possible implementation of the second aspect, in a ninth possible implementation, the female signal terminal includes a female switch signal terminal, and the male signal terminal includes a male switch signal terminal. The female switch signal terminal is used to connect to the male switch signal terminal. The control unit is used to output a low-level signal to the female switch signal terminal after the connection state of the power connector is abnormal. Further, the female switch signal terminal is used to output a low-level signal to the male switch signal terminal. The low-level signal is used to control the switch in the power connector to disconnect, and the switch is arranged between the positive power terminal and the positive wire, or the switch is arranged between the negative power terminal and the negative wire. At this time, no current will flow through the power connector, which can prevent the temperature of the first connection position and the temperature of the second connection position from further increasing, thereby protecting the communication equipment from being burned.

[0027] In a third aspect, the present application provides a power distribution device, which includes a power distribution connector and a control unit, and the power distribution connector includes a positive power terminal, a negative power terminal and a sampling unit. Among them, the first end of the positive power terminal is used to connect to the positive wire in the power cable, and the first end of the negative power terminal is used to connect to the negative wire in the power cable. The above-mentioned sampling unit is used to detect the working parameters of the distribution connector, and to output the working parameters to the control unit. Further, the control unit is used to determine whether the connection state of the distribution connector is an abnormal state based on the working parameters. Among them, the connection state of the distribution connector includes at least one of the connection state between the positive power terminal and the positive wire, and the connection state between the negative power terminal and the negative wire. By implementing the embodiment of the present application, by detecting the working parameters of the distribution connector to identify in advance whether the connection state of the distribution connector is an abnormal state, it is possible to avoid the distribution connector from heating and carbonizing or even burning the distribution equipment, thereby improving the reliability of the distribution connector, and then improving the power supply safety of the distribution equipment.

[0028] In combination with the third aspect, in a first possible implementation, the sampling unit includes a temperature detection element, which can be arranged between a first connection position and a second connection position, wherein the first connection position is a connection position between a positive power supply terminal and a positive wire, and the second connection position is a connection position between a negative power supply terminal and a negative wire. The above-mentioned working parameter is the temperature at the position where the temperature detection element is located, and the temperature at the position where the temperature detection element is located is close to the larger temperature of the temperature at the first connection position and the temperature at the second connection position. At this time, the control unit is used to determine whether the connection state of the distribution connector is an abnormal state, and the abnormal state includes that the temperature at the position where the temperature detection element is located is greater than or equal to the first threshold value, and at this time, the distribution connector and the power cable are in poor contact. In the implementation of the embodiment of the present application, since the local temperature near at least one of the first connection position and the second connection position will increase when the distribution connector and the power cable are in poor contact, the temperature at the position where the temperature detection element is located can be detected in advance to identify whether the distribution connector and the power cable are in poor contact, so that the most accurate detection feedback effect can be achieved, and the cost is lower.

[0029] In combination with the third aspect, in a second possible implementation, the sampling unit includes a first temperature detection element and a second temperature detection element, the first temperature detection element can be arranged on a side of the first connection position away from the second connection position, and the second temperature detection element can be arranged on a side of the second connection position away from the first connection position. Wherein, the first connection position is the connection position between the positive power supply terminal and the positive wire, and the second connection position is the connection position between the negative power supply terminal and the negative wire. The above-mentioned working parameters include a first temperature at the position where the first temperature detection element is located and a second temperature at the position where the second temperature detection element is located, and the connection state of the power distribution connector includes at least one of the connection state between the positive power supply terminal and the positive wire, and the connection state between the negative power supply terminal and the negative wire. The first temperature detection element is used to detect the first temperature and output the first temperature to the control unit, and the first temperature is close to the temperature of the first connection position. The second temperature detection element is used to detect the second temperature and output the second temperature to the control unit, and the second temperature is close to the temperature of the second connection position. Further, the control unit is used to determine whether the connection state between the positive power supply terminal and the positive wire is an abnormal state, and the abnormal state includes that the first temperature is greater than or equal to the second threshold value, and at this time, the positive power supply terminal and the positive wire are in poor contact. The control unit is used to determine whether the connection state between the negative power terminal and the negative wire is an abnormal state, and the abnormal state includes that the second temperature is greater than or equal to the third threshold, and the negative power terminal and the negative wire are in poor contact.

[0030] In implementing the embodiments of the present application, since the first connection position will cause a local temperature increase near the first connection position when the positive power terminal is in poor contact with the positive wire, and the second connection position will cause a local temperature increase near the second connection position when the negative power terminal is in poor contact with the negative wire, abnormality detection on the positive side and abnormality detection on the negative side are performed based on the first temperature and the second temperature respectively, the accuracy of abnormality detection is higher, and the detection method is more flexible and comprehensive.

[0031] In combination with the third aspect, in a third possible implementation, the sampling unit includes a first positive probe and a second positive probe, a first negative probe and a second negative probe, and the control unit includes a differential amplifier circuit. The first end of the first positive probe is connected to the positive wire, and the second end of the first positive probe is connected to the first positive input terminal of the differential amplifier circuit. The first end of the second positive probe is connected to the second end of the positive power supply terminal, and the second end of the second positive probe is connected to the second positive input terminal of the differential amplifier circuit. The first end of the first negative probe is connected to the negative wire, and the second end of the first negative probe is connected to the first negative input terminal of the differential amplifier circuit. The first end of the second negative probe is connected to the second end of the negative power supply terminal, and the second end of the second negative probe is connected to the second negative input terminal of the differential amplifier circuit.

[0032] In combination with the third possible implementation of the third aspect, in a fourth possible implementation, the above-mentioned operating parameters include a first positive voltage of the positive wire and a second positive voltage of the positive power terminal, and the connection state of the power distribution connector includes a connection state between the positive power terminal and the positive wire. The control unit also includes a controller, wherein the differential amplifier circuit and the controller can be separately arranged, and in this case, the differential amplifier circuit can be arranged inside or outside the control unit. When the differential amplifier circuit is arranged outside the control unit, the controller is the control unit. Optionally, the differential amplifier circuit can also be integrated inside the controller, and the specific position of the differential amplifier circuit is not limited here. The first positive probe is used to detect the first positive voltage and to output the first positive voltage to the differential amplifier circuit. The second positive probe is used to detect the second positive voltage and to output the second positive voltage to the differential amplifier circuit. Further, the differential amplifier circuit is used to amplify the voltage difference between the first positive voltage and the second positive voltage to obtain an amplified positive voltage drop at a first connection position, and to output the amplified positive voltage drop to the controller, and the first connection position is the connection position between the positive power terminal and the positive wire. The voltage difference between the first positive voltage and the second positive voltage is the positive voltage drop at the first connection position. Furthermore, the controller is used to determine whether the connection state between the positive power supply terminal and the positive wire is an abnormal state, and the abnormal state includes that the amplified positive voltage drop is greater than or equal to a fourth threshold value, and at this time, the positive power supply terminal and the positive wire are in poor contact.

[0033] In implementing the embodiment of the present application, since the positive voltage drop at the first connection position will increase but the value is small when the positive power terminal and the positive wire are in poor contact, the differential amplifier circuit can better detect the change process of the positive voltage drop after amplifying the positive voltage drop, and there is no need to wait for the heat accumulation process at the first connection position, thereby quickly identifying whether the connection state between the positive power terminal and the positive wire is an abnormal state, which can improve the accuracy and speed of abnormality detection on the positive side and provide higher safety.

[0034] In combination with the fourth possible implementation of the third aspect, in a fifth possible implementation, the control unit further includes a current detection circuit, wherein the current detection circuit and the controller can be separately arranged, and in this case the current detection circuit can be arranged inside or outside the control unit. Optionally, the current detection circuit can also be integrated inside the controller, and the specific location of the current detection circuit is not limited here. The current detection circuit is used to detect the current of the positive power supply terminal, and to output the current of the positive power supply terminal to the controller. Among them, the current of the positive power supply terminal is the same as the current of the first connection position. Further, the controller is used to obtain the amplified positive impedance of the first connection position based on the amplified positive voltage drop and the current of the positive power supply terminal, and is used to determine whether the connection state between the positive power supply terminal and the positive wire is an abnormal state, and the abnormal state includes that the amplified positive impedance is greater than or equal to the fifth threshold value, and at this time the positive power supply terminal is in poor contact with the positive wire. In implementing the embodiments of the present application, since the positive impedance at the first connection position will increase but the value is small when the positive power terminal and the positive wire are in poor contact, the change process of the positive impedance can be better detected after the amplified positive impedance is obtained based on the amplified positive voltage drop and the current of the positive power terminal, and there is no need to wait for the heat accumulation process at the first connection position, thereby quickly identifying whether the connection state between the positive power terminal and the positive wire is an abnormal state, thereby improving the accuracy and speed of abnormal detection on the positive side and providing higher safety.

[0035] In combination with any one of the third possible implementation of the third aspect to the fifth possible implementation of the third aspect, in a sixth possible implementation, the above-mentioned operating parameters also include a first negative voltage of the negative conductor and a second negative voltage of the negative power supply terminal, and the connection state of the power distribution connector also includes a connection state between the negative power supply terminal and the negative conductor. The control unit also includes a controller. The first negative probe is used to detect the first negative voltage and to output the first negative voltage to the differential amplifier circuit. The second negative probe is used to detect the second negative voltage and to output the second negative voltage to the differential amplifier circuit. Further, the differential amplifier circuit is used to amplify the voltage difference between the first negative voltage and the second negative voltage to obtain an amplified negative voltage drop at a second connection position, and to output the amplified negative voltage drop to the controller, the second connection position being the connection position between the negative power supply terminal and the negative conductor. Wherein, the voltage difference between the first negative voltage and the second negative voltage is the negative voltage drop at the second connection position. Furthermore, the controller is used to determine whether the connection state between the negative power terminal and the negative wire is an abnormal state, and the abnormal state includes that the amplified negative voltage drop is greater than or equal to a sixth threshold, and at this time the negative power terminal and the negative wire are in poor contact.

[0036] In the implementation of the embodiment of the present application, since the negative voltage drop at the second connection position will increase but the value is small when the negative power supply terminal and the negative wire are in poor contact, the differential amplifier circuit can better detect the change process of the negative voltage drop after amplifying the negative voltage drop, and there is no need to wait for the heat accumulation process at the second connection position, so as to quickly identify whether the connection state between the negative power supply terminal and the negative wire is abnormal, which can improve the accuracy and speed of abnormal detection on the negative side, and has higher safety. In addition, the abnormal detection on the positive side and the abnormal detection on the negative side can be taken into account at the same time, and the detection method is more flexible and comprehensive.

[0037] Optionally, in some feasible implementations, when the controller can directly detect the change process of the positive voltage drop and the negative voltage drop, the differential amplifier circuit may not be set in the control unit. At this time, the controller may also directly compare the positive voltage drop with the preset positive voltage drop threshold to determine whether the connection state between the positive power supply terminal and the positive wire is an abnormal state. Among them, the preset positive voltage drop threshold is less than the fourth threshold. The controller may also directly compare the negative voltage drop with the preset negative voltage drop threshold to determine whether the connection state between the negative power supply terminal and the negative wire is an abnormal state. Among them, the preset negative voltage drop threshold is less than the sixth threshold.

[0038] In combination with the sixth possible implementation of the third aspect, in a seventh possible implementation, the control unit further includes a current detection circuit. The current detection circuit is used to detect the current of the negative power supply terminal, and is used to output the current of the negative power supply terminal to the controller. Among them, the current of the negative power supply terminal is the same as the current of the second connection position. Further, the controller is used to obtain the amplified negative impedance of the second connection position based on the amplified negative voltage drop and the current of the negative power supply terminal, and is used to determine that the connection state between the negative power supply terminal and the negative wire is an abnormal state, and the abnormal state includes that the amplified negative impedance is greater than or equal to the seventh threshold value, and the negative power supply terminal and the negative wire are in poor contact. When the embodiment of the present application is implemented, since the negative impedance of the second connection position will increase when the negative power supply terminal is connected to the negative wire, but the value is small, the change process of the negative impedance can be better detected after the amplified negative impedance is obtained based on the amplified negative voltage drop and the current of the negative power supply terminal, and there is no need to wait for the heat accumulation process of the second connection position, so as to quickly identify whether the connection state between the negative power supply terminal and the negative wire is an abnormal state, which can improve the accuracy and speed of abnormal detection on the negative side, and has higher safety. Moreover, the abnormal detection on the positive side and the abnormal detection on the negative side can be taken into account at the same time, and the detection method is more flexible and comprehensive.

[0039] Optionally, in some feasible embodiments, when the controller can directly detect the change process of the negative voltage drop, the differential amplifier circuit may not be set in the control unit. At this time, the controller is used to obtain the positive impedance of the first connection position based on the positive voltage drop and the current of the positive power supply terminal, and is used to compare the positive impedance with the preset positive impedance threshold to determine whether the connection state between the positive power supply terminal and the positive wire is an abnormal state. Among them, the preset positive impedance threshold is less than the fifth threshold. The controller is also used to obtain the negative impedance of the second connection position based on the negative voltage drop and the current of the negative power supply terminal, and is used to compare the negative impedance with the preset negative impedance threshold to determine whether the connection state between the negative power supply terminal and the negative wire is an abnormal state. Among them, the preset negative impedance threshold is less than the seventh threshold.

[0040] In combination with any one of the third aspect to the seventh possible implementation of the third aspect, in an eighth possible implementation, the above-mentioned power distribution connector also includes a positive conductor, a negative conductor and a switch. Among them, the third end of the positive power terminal is connected to the first end of the positive conductor, and the second end of the positive conductor is used to connect to the positive pole of the external power supply, and the third end of the negative power terminal is connected to the first end of the negative conductor, and the second end of the negative conductor is used to connect to the negative pole of the external power supply. The switch can be arranged between the third end of the positive power terminal and the first end of the positive conductor, or the switch can also be arranged between the third end of the negative power terminal and the first end of the negative conductor. The above-mentioned control unit is also used to control the switch to disconnect after the connection state of the power distribution connector is abnormal. At this time, no current will flow through the power distribution connector, which can prevent the temperature of the first connection position and the temperature of the second connection position from further increasing, thereby protecting the power distribution equipment from being burned, and having higher safety.

[0041] In a fourth aspect, the present application provides a wireless communication system, the wireless communication system comprising a power connector as provided in any one of the possible implementations of the first aspect to the seventh aspect, and a communication device as provided in any one of the possible implementations of the second aspect to the ninth aspect. It is understandable that the communication device can identify in advance whether the connection state of the power connector is an abnormal state, thereby improving the reliability of the power connector, avoiding the power connector from heating and carbonizing or even burning the communication device, thereby improving the security of the wireless communication system.

[0042] In combination with the fourth aspect, in a first possible implementation, the wireless communication system further includes a power distribution device as provided in any one of the third aspect to the eighth possible implementation of the third aspect. The power distribution device is used to supply power to the communication device through a power connector. It is understandable that the power distribution device can identify in advance whether the connection status of the internal power distribution connector is abnormal, which can avoid the power distribution connector from heating and carbonizing or even burning the power distribution device. At this time, the abnormal detection of the power distribution connector and the power connector can be taken into account at the same time, and the security of the wireless communication system is further improved.

[0043] In a fifth aspect, the present application provides a wireless communication system, which includes a communication device, a power connector, and a power distribution device as provided in any one of the possible implementations of the third aspect to the eighth aspect. The power distribution device is used to supply power to the communication device through the power connector. It is understandable that the power distribution device can identify in advance whether the connection status of the internal power distribution connector is abnormal, which can avoid the power distribution connector from heating and carbonizing or even burning the power distribution device, thereby improving the safety of the wireless communication system.

[0044] The specific implementation and beneficial effects of the above-mentioned aspects and possible implementation methods of each aspect may be referenced to each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a schematic diagram of an application scenario of a power connector provided in an embodiment of the present application;

[0046] Figure 2 is a structural block diagram of a power connector provided in an embodiment of the present application;

[0047] Figure 3 is a schematic diagram of a structure of a power connector provided in an embodiment of the present application;

[0048] Figure 4 is another structural schematic diagram of a power connector provided in an embodiment of the present application;

[0049] Figure 5 is another structural schematic diagram of a power connector provided in an embodiment of the present application;

[0050] Figure 6 is another structural schematic diagram of a power connector provided in an embodiment of the present application;

[0051] Figure 7 is a structural block diagram of a communication device provided in an embodiment of the present application;

[0052] Figure 8 is a structural diagram of a communication device provided in an embodiment of the present application;

[0053] Fig. 9 is another structural schematic diagram of a communication device provided in an embodiment of the present application;

[0054] Fig.10 is another structural schematic diagram of a communication device provided in an embodiment of the present application;

[0055] Fig.11 is another structural schematic diagram of a communication device provided in an embodiment of the present application;

[0056] Fig.12 is another structural schematic diagram of a communication device provided in an embodiment of the present application;

[0057] Fig.13 is a structural block diagram of the power distribution equipment provided in an embodiment of the present application;

[0058] Fig.14 is a structural schematic diagram of a power distribution device provided in an embodiment of the present application;

[0059] Fig.15 is another structural schematic diagram of the power distribution equipment provided in an embodiment of the present application;

[0060] Fig.16 is another structural schematic diagram of the power distribution equipment provided in an embodiment of the present application;

[0061] Fig.17 is another structural schematic diagram of the power distribution equipment provided in an embodiment of the present application;

[0062] Fig.18 is a structural block diagram of a wireless communication system provided in an embodiment of the present application;

[0063] Fig.19 This is another structural block diagram of the wireless communication system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0064] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0065] The implementation of the technical solution of the present application is further described in detail below in conjunction with the accompanying drawings.

[0066] See also Figure 1 , Figure 1 Schematic diagram of the application scenario of the power connector provided by the embodiment of the present application. Figure 1 As shown, the wireless communication system includes a power connector 1a, a communication device 1b, a power cable 1c and a power distribution device 1d, wherein the power connector 1a includes a sampling unit 10a, the communication device 1b includes a device connector 10b and a control unit 11b, and the power connector 1a is inserted into the device connector 10b to power the communication device 1b. When the power distribution device 1d transmits electric energy through the power cable 1c, an electrical connection is achieved between the power connector 1a and the power cable 1c, wherein the electric energy can be direct current or alternating current. At this time, the power connector 1a is used to obtain electric energy from the power cable 1c, and is used to output electric energy to the device connector 10b, thereby realizing the power supply process of the communication device 1b.

[0067] During the power supply process of the communication device 1b, the sampling unit 10a is used to detect the working parameters of the power connector 1a in real time, and is used to output the working parameters to the control unit 11b through the device connector 10b. The control unit 11b is used to determine whether the connection state of the power connector 1a is an abnormal state based on the working parameters, wherein the connection state of the power connector 1a is the connection state between the power connector 1a and the power cable 1c. Further, the control unit 11b is used to output an alarm message to the user interface of the client 1e when the connection state of the power connector 1a is an abnormal state, that is, the power connector 1a and the power cable 1c are in poor contact. For example, the alarm message can be output to the user interface of the client 1e through optical fiber communication. Among them, the client 1e is the user end where the operation and maintenance personnel of the wireless communication system are located, and the alarm message is used to instruct the operation and maintenance personnel to repair the power connector 1a.

[0068] By implementing the embodiments of the present application, it is possible to identify in advance whether the power connector 1a and the power cable 1c are in poor contact, and to output an alarm in time when it is identified that the power connector 1a and the power cable 1c are in poor contact, thereby preventing the power connector 1a from heating up and carbonizing or even burning the communication device 1b, thereby improving the reliability of the power connector 1a and increasing system safety.

[0069] The above is only an example of the application scenarios of the power connector provided in the embodiments of the present application, and is not an exhaustive list. The present application does not limit the application scenarios.

[0070] The following will be combined Figures 2 to 6 The power connector and its working principle provided in the embodiment of the present application are illustrated.

[0071] See also Figure 2 , Figure 2 is a structural block diagram of the power connector provided in the embodiment of the present application. Figure 2 As shown, the power connector 2 includes a positive power terminal 20, a negative power terminal 21, a male signal terminal 22 and a sampling unit 23. Among them, the first end of the positive power terminal 20 is used to connect to the positive wire 30 in the power cable 3, and the first end of the negative power terminal 21 is used to connect to the negative wire 31 in the power cable 3. The sampling unit 23 is connected to the first end of the male signal terminal 22, and specifically, the sampling unit 23 is connected to the first end of the male signal terminal 22 through a signal line. The second end of the male signal terminal 22 is used to connect to the female signal terminal 40 in the device connector 4, and the device connector 4 can be a device connector in any electrical device. The number of signal terminals in the male signal terminal 22 can be one or more, and the number of signal terminals in the female signal terminal 40 can be one or more. In addition, the signal terminals in the male signal terminal 22 correspond to the signal terminals in the female signal terminal 40 one by one.

[0072] The sampling unit 23 is used to detect the working parameters of the power connector 2, and to output the working parameters to the male signal terminal 22. The working parameters include at least one of the parameters of the position near the first connection position between the positive power terminal 20 and the positive wire 30, and the parameters of the position near the second connection position between the negative power terminal 21 and the negative wire 31. Alternatively, the working parameters include the parameters of the positive power terminal 20, the parameters of the negative power terminal 21, the parameters of the positive wire 30, and the parameters of the negative wire 31.

[0073] Further, the male signal terminal 22 is used to output working parameters to the female signal terminal 40. The working parameters are used to determine whether the connection state of the power connector 2 is an abnormal state. The connection state of the power connector 2 includes at least one of the connection state between the positive power terminal 20 and the positive wire 30, and the connection state between the negative power terminal 21 and the negative wire 31.

[0074] By implementing the embodiment of the present application, the working parameters of the power connector 2 are detected to identify in advance whether the connection state of the power connector 2 is an abnormal state, which can avoid the power connector 2 from heating and carbonizing, thereby improving the reliability of the power connector 2.

[0075] In some feasible embodiments, when an external power source supplies power to the power connector 2, the output current of the external power source flows to the power connector 2 through the power cable 3. At this time, the positive power terminal 20 is electrically connected to the positive wire 30, and the negative power terminal 21 is electrically connected to the negative wire 31. In the case where the power terminal and the wire are in poor contact, heat will accumulate at the connection position between the power terminal and the wire, resulting in a local temperature increase near the connection position. Exemplarily, the power terminal is the positive power terminal 20 and the wire is the positive wire 30, and the power terminal is the negative power terminal 21 and the wire is the negative wire 31. Therefore, the sampling unit 23 can determine whether the connection state of the power connector 2 is an abnormal state by detecting the temperature near the above-mentioned connection position in real time.

[0076] In some possible implementations, such as Figure 3 As shown above Figure 2 The sampling unit 23 shown includes a temperature detection element 231, which is arranged between a first connection position a and a second connection position b. The first connection position a is the connection position between the positive power terminal 20 and the positive wire 30, and the second connection position b is the connection position between the negative power terminal 21 and the negative wire 31. The male signal terminal 22 can be Figure 3 The male signal terminal 221 and the female signal terminal 40 can be Figure 3The female signal terminal 401 is shown. The temperature detection element 231 is connected to one end of the male signal terminal 221 through a signal line, and the other end of the male signal terminal 221 is used to connect to the female signal terminal 401. The power connector 2 also includes a connector housing 24, and the temperature detection element 231 is arranged inside the connector housing 24. All terminals in the power connector 2 will pass through the connector housing 24 to connect to the device connector 4.

[0077] The temperature detection element 231 is used to detect the temperature at the location of the temperature detection element 231, and is used to output the temperature at the location of the temperature detection element 231 to the male signal terminal 221. At this time, the working parameter of the power connector 2 is the temperature at the location of the temperature detection element 231. The location of the temperature detection element 231 can be any location between the first connection location a and the second connection location b, that is, the temperature at the location of the temperature detection element 231 can be the temperature at any location. In addition, the temperature at the location of the temperature detection element 231 is close to the larger temperature of the temperature of the first connection location a and the temperature of the second connection location b.

[0078] Furthermore, the male signal terminal 221 is used to output the temperature of the location of the temperature detection element 231 to the female signal terminal 401. When the temperature of the location of the temperature detection element 231 is greater than or equal to the first threshold, the connection state of the power connector 2 is abnormal, that is, the power connector 2 and the power cable 3 are in poor contact at this time.

[0079] When implementing the embodiment of the present application, heat is generated when the power connector 2 and the power cable 3 are in poor contact, which causes the local temperature near at least one of the first connection position a and the second connection position b to rise. Therefore, by detecting the temperature of the position where the temperature detection element 231 is located, it is possible to identify in advance whether the power connector 2 and the power cable 3 are in poor contact, thereby achieving the most accurate detection feedback effect, thereby improving the reliability of the power connector 2 and reducing the cost.

[0080] In some possible implementations, such as Figure 4 As shown above Figure 2The sampling unit 23 shown includes a first temperature detection element 232 and a second temperature detection element 233. The first temperature detection element 232 can be arranged on the side of the first connection position a away from the second connection position b, and the second temperature detection element 233 can be arranged on the side of the second connection position b away from the first connection position a. The male signal terminal 22 includes a male positive signal terminal 222 and a male negative signal terminal 223, and the female signal terminal 40 includes a female positive signal terminal 402 and a female negative signal terminal 403. The first temperature detection element 232 is connected to the first end of the male positive signal terminal 222, specifically, the first temperature detection element 232 is connected to the first end of the male positive signal terminal 222 through a signal line. The second end of the male positive signal terminal 222 is used to connect to the female positive signal terminal 402. The second temperature detection element 233 is connected to the first end of the male negative signal terminal 223, specifically, the second temperature detection element 233 is connected to the first end of the male negative signal terminal 223 through a signal line. The second end of the male negative signal terminal 223 is used to connect to the female negative signal terminal 403. The power connector 2 also includes a connector housing 24, and the first temperature detection element 232 and the second temperature detection element 233 are both arranged inside the connector housing 24. All terminals in the power connector 2 pass through the connector housing 24 to connect to the device connector 4.

[0081] The first temperature detection element 232 is used to detect a first temperature at a location where the first temperature detection element 232 is located, and is used to output the first temperature through the male positive signal terminal 222. The second temperature detection element 233 is used to detect a second temperature at a location where the second temperature detection element 233 is located, and is used to output the second temperature through the male negative signal terminal 223. At this time, the operating parameters of the power connector 2 include the first temperature and the second temperature.

[0082] The first temperature detection element 232 may be located at any position on the side of the first connection position a away from the second connection position b, that is, the first temperature is the temperature of any position on the side of the first connection position a away from the second connection position b. Moreover, the first temperature is close to the temperature of the first connection position a. The second temperature detection element 233 may be located at any position on the side of the second connection position b away from the first connection position a, that is, the second temperature is the temperature of any position on the side of the second connection position b away from the first connection position a. Moreover, the second temperature is close to the temperature of the second connection position b.

[0083] Further, the male positive signal terminal 222 is used to output a first temperature to the female positive signal terminal 402. The male negative signal terminal 223 is used to output a second temperature to the female negative signal terminal 403. At this time, the connection state of the power connector 2 includes at least one of the connection state between the positive power terminal 20 and the positive wire 30, and the connection state between the negative power terminal 21 and the negative wire 31. When the first temperature is greater than or equal to the second threshold, the positive power terminal 20 and the positive wire 30 are in an abnormal state, that is, the positive power terminal 20 and the positive wire 30 are in poor contact at this time. When the second temperature is greater than or equal to the third threshold, the connection state between the negative power terminal 21 and the negative wire 31 is an abnormal state, that is, the negative power terminal 21 and the negative wire 31 are in poor contact at this time. In a possible situation, the second threshold and the third threshold are equal, or they may be unequal, which is not limited by the present application.

[0084] In the implementation of the embodiment of the present application, heat is generated when the power connector 2 and the power cable 3 are in poor contact, thereby causing the local temperature near at least one of the first connection position a and the second connection position b to rise. Therefore, by detecting the first temperature to identify in advance whether the positive power terminal 20 and the positive wire 30 are in poor contact, and by detecting the second temperature to identify in advance whether the negative power terminal 21 and the negative wire 31 are in poor contact, the most accurate detection feedback effect can be achieved, and abnormal detection on the positive side and abnormal detection on the negative side can be taken into account at the same time, thereby further improving the reliability of the power connector 2 and increasing the accuracy of abnormal detection.

[0085] In some feasible implementations, when the power terminal and the wire are in poor contact, the voltage drop and impedance at the connection position between the power terminal and the wire will increase. Therefore, the sampling unit 23 can determine whether the connection state of the power connector 2 is abnormal by detecting the voltage at the connection position in real time.

[0086] In a specific implementation, Figure 5 As shown above Figure 2 The sampling unit 23 shown includes a first positive probe 234, a second positive probe 235, a first negative probe 236, and a second negative probe 237. The male signal terminal 22 includes a first male positive signal terminal 224, a second male positive signal terminal 225, a first male negative signal terminal 226, and a second male negative signal terminal 227. The female signal terminal 40 includes a first female positive signal terminal 404, a second female positive signal terminal 405, a first female negative signal terminal 406, and a second female negative signal terminal 407.

[0087] The first positive probe 234 is arranged between the positive wire 30 and the first end of the first male positive signal terminal 224. Specifically, the first end of the first positive probe 234 is connected to the positive wire 30, and the second end of the first positive probe 234 is connected to the first end of the first male positive signal terminal 224 through the signal line. The second end of the first male positive signal terminal 224 is used to connect to the first female positive signal terminal 404. The second positive probe 235 is arranged between the second end of the positive power terminal 20 and the first end of the second male positive signal terminal 225. Specifically, the first end of the second positive probe 235 is connected to the second end of the positive power terminal 20, and the second end of the second positive probe 235 is connected to the first end of the second male positive signal terminal 225 through the signal line. The second end of the second male positive signal terminal 225 is used to connect to the second female positive signal terminal 405. The second positive probe 235 and the positive power terminal 20 may be two independent components, or the second positive probe 235 may be reinforced on the positive power terminal 20 to form a component.

[0088] The first negative probe 236 is disposed between the negative wire 31 and the first end of the first male negative signal terminal 226. Specifically, the first end of the first negative probe 236 is connected to the negative wire 31, and the second end of the first negative probe 236 is connected to the first end of the first male negative signal terminal 226 through the signal line. The second end of the first male negative signal terminal 226 is used to connect to the first female negative signal terminal 406. The second negative probe 237 is disposed between the second end of the negative power terminal 21 and the first end of the second male negative signal terminal 227. Specifically, the first end of the second negative probe 237 is connected to the second end of the negative power terminal 21, and the second end of the second negative probe 237 is connected to the first end of the second male negative signal terminal 227 through the signal line. The second end of the second male negative signal terminal 227 is used to connect to the second female negative signal terminal 407. The second negative electrode probe 237 and the negative power supply terminal 21 may be two independent components, or the second negative electrode probe 237 may be reinforced on the negative power supply terminal 21 to form one component.

[0089] The power connector 2 further comprises a connector housing 24 , and the first positive probe 234 , the second positive probe 235 , the first negative probe 236 and the second negative probe 237 are all arranged inside the connector housing 24 , and all terminals in the power connector 2 are connected to the device connector 4 through the connector housing 24 .

[0090] The following will Figure 5 The corresponding abnormality detection method on the positive electrode side is described below.

[0091] The first positive probe 234 is used to detect the first positive voltage of the positive wire 30, and is used to output the first positive voltage through the first male positive signal terminal 224. The second positive probe 235 is used to detect the second positive voltage of the positive power terminal 20, and is used to output the second positive voltage through the second male positive signal terminal 225. At this time, the working parameters of the power connector 2 include the first positive voltage and the second positive voltage.

[0092] Further, the first male positive signal terminal 224 is used to output a first positive voltage to the first female positive signal terminal 404. The second male positive signal terminal 225 is used to output a second positive voltage to the second female positive signal terminal 405. At this time, the connection state of the power connector 2 includes the connection state of the positive power terminal 20 and the positive wire 30. Among them, the first positive voltage and the second positive voltage are used to determine the positive voltage drop at the first connection position a, and illustratively, the positive voltage drop can be the voltage difference between the first positive voltage and the second positive voltage, or the positive voltage drop can be the amplified positive voltage drop obtained by amplifying the voltage difference between the first positive voltage and the second positive voltage.

[0093] When the positive voltage drop is greater than or equal to the fourth threshold, the connection state between the positive power terminal 20 and the positive wire 30 is abnormal, that is, the positive power terminal 20 and the positive wire 30 are in poor contact.

[0094] When implementing the embodiment of the present application, since the positive voltage drop at the first connection position a increases when the positive power terminal 20 and the positive wire 30 are in poor contact, whether the positive power terminal 20 and the positive wire 30 are in poor contact can be identified in advance by detecting the first positive voltage and the second positive voltage, and there is no need to wait for the heat accumulation process at the first connection position a, so the abnormality detection speed on the positive side is faster and safer.

[0095] The following will Figure 5 The corresponding abnormality detection method on the negative electrode side is described below.

[0096] The first negative pole probe 236 is used to detect the first negative pole voltage of the negative pole wire 31, and is used to output the first negative pole voltage through the first male negative pole signal terminal 226. The second negative pole probe 237 is used to detect the second negative pole voltage of the negative pole power supply terminal 21, and is used to output the second negative pole voltage through the second male negative pole signal terminal 227. At this time, the working parameters of the power connector 2 also include the first negative pole voltage and the second negative pole voltage.

[0097] Further, the first male negative signal terminal 226 is used to output a first negative voltage to the first female negative signal terminal 406. The second male negative signal terminal 227 is used to output a second negative voltage to the second female negative signal terminal 407. At this time, the connection state of the power connector 2 also includes the connection state of the negative power terminal 21 and the negative wire 31. Among them, the first negative voltage and the second negative voltage are used to determine the negative voltage drop of the second connection position b. Exemplarily, the negative voltage drop can be the voltage difference between the first negative voltage and the second negative voltage, or the negative voltage drop can be the amplified negative voltage drop obtained by amplifying the voltage difference between the first negative voltage and the second negative voltage.

[0098] When the negative voltage drop is greater than or equal to the fifth threshold, the connection state between the negative power terminal 21 and the negative wire 31 is abnormal, that is, the negative power terminal 21 and the negative wire 31 are in poor contact.

[0099] When implementing the embodiment of the present application, since the negative voltage drop at the second connection position b will increase when the negative power terminal 21 and the negative wire 31 are in poor contact, whether the contact between the negative power terminal 21 and the negative wire 31 is poor can be identified in advance by detecting the first negative voltage and the second negative voltage, and there is no need to wait for the heat accumulation process at the second connection position b, so the abnormality detection speed on the negative side is faster and safer.

[0100] It can be understood that the above-mentioned abnormal detection method on the positive side and the abnormal detection method on the negative side can be used at the same time. For example, when one of the situations that the negative voltage drop is greater than or equal to the fifth threshold and the positive voltage drop is greater than or equal to the fourth threshold occurs, or when both situations occur at the same time, it can be determined that the power connector 2 and the power cable 3 are in poor contact. The specific requirements can be designed according to actual conditions, and this application is not limited.

[0101] In some possible implementations, such as Figure 6 As shown above Figure 3 The power connector 2 shown also includes a switch 25. Exemplarily, the switch 25 can be a relay, a contactor or a bidirectional switch. The male signal terminal 22 includes a male switch signal terminal 228, and the female signal terminal 40 includes a female switch signal terminal 408. The switch 25 is arranged between the first end of the positive power terminal 20 and the positive wire 30. Optionally, the switch 25 can also be arranged between the first end of the negative power terminal 21 and the negative wire 31. The control end 251 of the switch 25 is connected to the first end of the male switch signal terminal 228. Specifically, the control end 251 of the switch 25 is connected to the first end of the male switch signal terminal 228 through a signal line. The second end of the male switch signal terminal 228 is used to connect to the female switch signal terminal 408.

[0102] When the power cable 3 is connected to an external power source, the male switch signal terminal 228 is used to receive a high-level signal from the female switch signal terminal 408, and the high-level signal is used to control the switch 25 to turn on, thereby turning on the current path between the power source and the power connector 2, so that the power connector 2 supplies power to the power-consuming device. After the device corresponding to the device connector 4 detects that the connection state of the power connector 2 is abnormal, the male switch signal terminal 228 is used to receive a low-level signal from the female switch signal terminal 408, and the low-level signal is used to control the switch 25 to turn off. At this time, no current will flow through the power connector 2, which can avoid further increase in the temperature of the first connection position a and the temperature of the second connection position b, thereby ensuring that the power connector 2 will not further heat up and carbonize, and the safety is higher. It can be understood that it can also be configured as a low-level signal to control the switch 25 to turn on, which is not limited in this application, that is, the male switch signal terminal 228 is used to receive a certain signal from the female switch signal terminal 408, and the signal can be used to control the switch 25 to turn on.

[0103] In some feasible implementations, the switch 25 and the male switch signal terminal 228 may also be arranged in the above Figure 4 or Figure 5 In the power connector 2 shown in the figure, the female switch signal terminal 408 can also be correspondingly arranged in the above Figure 4 or Figure 5 The device connector 4 is shown.

[0104] In some feasible implementations, as described above Figures 3 to 6 As shown, the device connector 4 further includes a positive jack terminal 41 and a negative jack terminal 42, the positive power terminal 20 is used to be plugged into the positive jack terminal 41, and the negative power terminal 21 is used to be plugged into the negative jack terminal 42. At this time, the power connector 2 can output power to the device connector 4, so that the device corresponding to the device connector 4 works.

[0105] In the above Figures 3 to 6 In the corresponding embodiment, any threshold value among the first threshold value, the second threshold value, the third threshold value, the fourth threshold value and the fifth threshold value may be a preset value, or a value determined according to components used in the power connector 2 .

[0106] The following will be combined Figures 7 to 12 The communication device and its working principle provided in the embodiments of the present application are illustrated.

[0107] See also Figure 7 , Figure 7 is a structural block diagram of a communication device provided in an embodiment of the present application. Figure 7As shown, the communication device 5 includes a device connector 50 and a control unit 51, and the device connector 50 includes a positive jack terminal 500, a negative jack terminal 501, and a female signal terminal 502. Among them, the positive jack terminal 500 is used to plug with the positive power terminal 60 in the power connector 6, and the negative jack terminal 501 is used to plug with the negative power terminal 61 in the power connector 6. The first end of the female signal terminal 502 is used to connect with the male signal terminal 62 in the power connector 6, and the second end of the female signal terminal 502 is connected to the control unit 51 through a signal line. Exemplarily, the device connector 50 and the power connector 6 are the above-mentioned Figure 2 The device connector 4 and the power connector 2 are shown in FIG. 1 . At this time, the structure of the female signal terminal 502 and the male signal terminal 62 can be described in detail in FIG. Figure 2 The corresponding embodiments will not be described in detail here.

[0108] The female signal terminal 502 is used to receive the working parameters of the power connector 6 from the male signal terminal 62, and to output the working parameters to the control unit 51. The working parameters may be temperature or voltage, and are detected by a sampling unit inside the power connector 6.

[0109] Further, the control unit 51 is used to determine whether the connection state of the power connector 6 is an abnormal state based on the working parameters. The connection state of the power connector 6 includes at least one of the connection state between the positive power terminal 60 and the positive wire 70 in the power cable 7, and the connection state between the negative power terminal 61 and the negative wire 71 in the power cable 7.

[0110] By implementing the embodiment of the present application, it is possible to identify in advance whether the connection status of the power connector 6 is abnormal based on the working parameters of the power connector 6, which can prevent the power connector 6 from heating up and carbonizing or even burning the communication device 5, thereby improving the safety of using the communication device 5.

[0111] In some feasible embodiments, when one of the connection states between the positive power terminal 60 and the positive wire 70, and the connection state between the negative power terminal 61 and the negative wire 71 is an abnormal state, or both connection states are abnormal states, the connection state of the power connector 6 can be determined to be an abnormal state. The specific requirements can be designed according to actual conditions, and this application is not limited.

[0112] In some possible implementations, such as Figure 8 As shown above Figure 7The female signal terminal 502 shown is the female signal terminal 5021, and the male signal terminal 62 is the male signal terminal 621. The female signal terminal 5021 is used to receive the temperature of any position between the first connection position and the second connection position from the male signal terminal 621, and is used to output the temperature of any position to the control unit 51. The first connection position is the connection position between the positive power terminal 60 and the positive wire 70, and the second connection position is the connection position between the negative power terminal 61 and the negative wire 71. The temperature of any position can be detected by the sampling unit in the power connector 6. For example, the specific structure of the sampling unit is as follows. Figure 3 And, the temperature of any one of the positions is close to the larger temperature between the temperature of the first connection position and the temperature of the second connection position.

[0113] Further, the control unit 51 is used to determine whether the connection state of the power connector 6 is an abnormal state, and the abnormal state includes that the temperature at any position is greater than or equal to the first threshold, and the power connector 6 is in poor contact with the power cable 7. In other words, the control unit 51 is used to determine that the power connector 6 is in poor contact with the power cable 7 in response to the temperature at any position being greater than or equal to the first threshold, and is used to determine that the power connector 6 is in good contact with the power cable 7 in response to the temperature at any position being less than the first threshold.

[0114] When implementing the embodiment of the present application, since poor contact between the power connector 6 and the power cable 7 will cause a local temperature increase near at least one of the first connection position and the second connection position, detecting whether the connection state of the power connector 2 is an abnormal state based on the temperature at any position can improve the accuracy of abnormality detection, thereby improving the safety of use of the communication device 5.

[0115] In some possible implementations, such as Fig. 9 As shown above Figure 7 The female signal terminal 502 shown includes a female positive signal terminal 5022 and a female negative signal terminal 5023, and the male signal terminal 62 includes a male positive signal terminal 622 and a male negative signal terminal 623. The female positive signal terminal 5022 is used to connect with the male positive signal terminal 622, specifically, the first end of the female positive signal terminal 5022 is used to connect with the male positive signal terminal 622. The female negative signal terminal 5023 is used to connect with the male negative signal terminal 623, specifically, the first end of the female negative signal terminal 5023 is used to connect with the male negative signal terminal 623. The second end of the female positive signal terminal 5022 and the second end of the female negative signal terminal 5023 are connected to the control unit 51 through a signal line.

[0116] The following will Fig. 9The corresponding abnormality detection method on the positive electrode side is described below.

[0117] The female positive signal terminal 5022 is used to receive a first temperature from the male positive signal terminal 622, and is used to output the first temperature to the control unit 51, and the first temperature is close to the temperature of the first connection position. At this time, the working parameters of the power connector 6 include a first temperature at any position on the side of the first connection position away from the second connection position. Further, the control unit 51 is used to determine whether the connection state between the positive power terminal 60 and the positive wire 70 is an abnormal state, and the abnormal state includes that the first temperature is greater than or equal to the second threshold value, and at this time, the positive power terminal 60 and the positive wire 70 are in poor contact. In other words, the control unit 51 is used to determine that the positive power terminal 60 and the positive wire 70 are in poor contact in response to the first temperature being greater than or equal to the second threshold value, and is used to determine that the positive power terminal 60 and the positive wire 70 are in good contact in response to the first temperature being less than the second threshold value.

[0118] When implementing the embodiment of the present application, since poor contact between the positive power terminal 60 and the positive wire 70 will cause a local temperature increase near the first connection position, detecting whether the connection state between the positive power terminal 60 and the positive wire 70 is abnormal based on the first temperature can improve the accuracy of abnormality detection on the positive side, thereby improving the safety of use of the communication device 5.

[0119] The following will Fig. 9 The corresponding abnormality detection method on the negative electrode side is described below.

[0120] The female negative signal terminal 5023 is used to receive the second temperature from the male negative signal terminal 623, and is used to output the second temperature to the control unit 51, and the second temperature is close to the temperature of the second connection position. At this time, the working parameters of the power connector 6 also include the second temperature of any position on the side of the second connection position away from the first connection position. Further, the control unit 51 is used to determine whether the connection state between the negative power terminal 61 and the negative wire 71 is an abnormal state, and the abnormal state includes that the second temperature is greater than or equal to the third threshold, and the negative power terminal 61 and the negative wire 71 are in poor contact. In other words, the control unit 51 is used to determine that the negative power terminal 61 and the negative wire 71 are in poor contact in response to the second temperature being greater than or equal to the third threshold, and is used to determine that the contact between the negative power terminal 61 and the negative wire 71 is good in response to the second temperature being less than the third threshold. Among them, the second threshold and the third threshold may be equal or unequal, and this application is not limited.

[0121] In the implementation of the embodiment of the present application, since the local temperature near the second connection position will rise when the negative power terminal 61 and the negative wire 71 are in poor contact, the connection state between the negative power terminal 61 and the negative wire 71 is detected based on the second temperature to see whether it is abnormal, which can improve the accuracy of abnormal detection on the negative side, thereby improving the safety of the communication device 5. In addition, both abnormal detection on the positive side and abnormal detection on the negative side can be taken into account at the same time, and the detection method is more flexible and comprehensive.

[0122] exist Fig. 9 In a corresponding embodiment, the first temperature and the second temperature can be detected by a sampling unit in the power connector 6. For example, the specific structure of the sampling unit is as follows: Figure 4 shown.

[0123] In some possible implementations, such as Fig.10 As shown above Figure 7 The female signal terminal 502 shown includes a first female positive signal terminal 5024, a second female positive signal terminal 5025, a first female negative signal terminal 5026 and a second female negative signal terminal 5027. Figure 7 The male signal terminal 62 shown includes a first male positive signal terminal 624 and a second male positive signal terminal 625, a first male negative signal terminal 626 and a second male negative signal terminal 627. The control unit 51 includes a differential amplifier circuit 510 and a controller 511. Exemplarily, the controller 511 may be a processing chip inside the communication device 5. The differential amplifier circuit 510 and the controller 511 may be separately provided. In this case, the differential amplifier circuit 510 may be provided inside or outside the control unit 51. When the differential amplifier circuit 510 is provided outside the control unit 51, the controller 511 is the control unit 51. Optionally, the differential amplifier circuit 510 may also be integrated inside the controller 511. The specific location of the differential amplifier circuit 510 is not limited here.

[0124] The first end of the first female positive signal terminal 5024 is used to connect to the first male positive signal terminal 624, and the second end of the first female positive signal terminal 5024 is connected to the first positive input terminal of the differential amplifier circuit 510. Exemplarily, the second end of the first female positive signal terminal 5024 is connected to the first positive input terminal of the differential amplifier circuit 510 through a signal line. The first end of the second female positive signal terminal 5025 is used to connect to the second male positive signal terminal 625, and the second end of the second female positive signal terminal 5025 is connected to the second positive input terminal of the differential amplifier circuit 510. Exemplarily, the second end of the second female positive signal terminal 5025 is connected to the second positive input terminal of the differential amplifier circuit 510 through a signal line.

[0125] The first end of the first female negative signal terminal 5026 is used to connect to the first male negative signal terminal 626, and the second end of the first female negative signal terminal 5026 is connected to the first negative input terminal of the differential amplifier circuit 510. Exemplarily, the second end of the first female negative signal terminal 5026 is connected to the first negative input terminal of the differential amplifier circuit 510 through a signal line. The first end of the second female negative signal terminal 5027 is used to connect to the second male negative signal terminal 627, and the second end of the second female negative signal terminal 5027 is connected to the second negative input terminal of the differential amplifier circuit 510. Exemplarily, the second end of the second female negative signal terminal 5027 is connected to the second negative input terminal of the differential amplifier circuit 510 through a signal line. The output end of the differential amplifier circuit 510 is connected to the controller 511 through a signal line.

[0126] The following will Fig.10 The corresponding abnormality detection method on the positive electrode side is described below.

[0127] The first female positive signal terminal 5024 is used to receive the first positive voltage of the positive wire 70 from the first male positive signal terminal 624, and is used to output the first positive voltage to the differential amplifier circuit 510. The second female positive signal terminal 5025 is used to receive the second positive voltage of the positive power supply terminal 60 from the second male positive signal terminal 625, and is used to output the second positive voltage to the differential amplifier circuit 510. At this time, the operating parameters of the power connector 6 include the first positive voltage and the second positive voltage.

[0128] Further, the differential amplifier circuit 510 is used to amplify the voltage difference between the first positive voltage and the second positive voltage to obtain an amplified positive voltage drop at the first connection position, and to output the amplified positive voltage drop to the controller 511. The voltage difference between the first positive voltage and the second positive voltage is the positive voltage drop at the first connection position.

[0129] Furthermore, the controller 511 is used to determine whether the connection state between the positive power terminal 60 and the positive wire 70 is an abnormal state, and the abnormal state includes that the amplified positive voltage drop is greater than or equal to the fourth threshold value, and at this time, the positive power terminal 60 is in poor contact with the positive wire 70. In other words, the controller 511 is used to determine that the positive power terminal 60 is in poor contact with the positive wire 70 in response to the amplified positive voltage drop being greater than or equal to the fourth threshold value, and is used to determine that the positive power terminal 60 is in good contact with the positive wire 70 in response to the amplified positive voltage drop being less than the fourth threshold value.

[0130] When implementing the embodiment of the present application, since the positive voltage drop at the first connection position will increase but the value is small when the positive power terminal 60 and the positive wire 70 are in poor contact, the differential amplifier circuit 510 can better detect the change process of the positive voltage drop after amplifying the positive voltage drop, and there is no need to wait for the heat accumulation process at the first connection position, thereby quickly identifying whether the connection status between the positive power terminal 60 and the positive wire 70 is an abnormal state, which can improve the accuracy and speed of abnormal detection on the positive side and improve the safety of use of the communication device 5.

[0131] The following will Fig.10 The corresponding abnormality detection method on the negative electrode side is described below.

[0132] The first female negative signal terminal 5026 is used to receive the first negative voltage of the negative wire 71 from the first male negative signal terminal 626, and is used to output the first negative voltage to the differential amplifier circuit 510. The second female negative signal terminal 5027 is used to receive the second negative voltage of the negative power supply terminal 61 from the second male negative signal terminal 527, and is used to output the second negative voltage to the differential amplifier circuit 510. At this time, the operating parameters of the power connector 6 also include the first negative voltage and the second negative voltage.

[0133] Further, the differential amplifier circuit 510 is used to amplify the voltage difference between the first negative electrode voltage and the second negative electrode voltage to obtain an amplified negative electrode voltage drop at the second connection position, and to output the amplified negative electrode voltage drop to the controller 511. The voltage difference between the first negative electrode voltage and the second negative electrode voltage is the negative electrode voltage drop at the second connection position.

[0134] Furthermore, the controller 511 is used to determine whether the connection state between the negative power supply terminal 61 and the negative wire 71 is an abnormal state, and the abnormal state includes that the amplified negative voltage drop is greater than or equal to the sixth threshold value, and at this time, the negative power supply terminal 61 is in poor contact with the negative wire 71. In other words, the controller 511 is used to determine that the negative power supply terminal 61 is in poor contact with the negative wire 71 in response to the amplified negative voltage drop being greater than or equal to the sixth threshold value, and is used to determine that the negative power supply terminal 61 is in good contact with the negative wire 71 in response to the amplified negative voltage drop being less than the sixth threshold value.

[0135] In the implementation of the present application, since the negative voltage drop at the second connection position will increase but the value is small when the negative power terminal 61 and the negative wire 71 are in poor contact, the differential amplifier circuit 510 can better detect the change process of the negative voltage drop after amplifying the negative voltage drop, and there is no need to wait for the heat accumulation process at the second connection position, so as to quickly identify whether the connection state between the negative power terminal 61 and the negative wire 71 is an abnormal state, which can improve the accuracy and speed of abnormal detection on the negative side, thereby improving the safety of the communication device 5. In addition, the abnormal detection on the positive side and the abnormal detection on the negative side can be taken into account at the same time, and the detection method is more flexible and comprehensive.

[0136] exist Fig.10 In the corresponding implementation manner, the first positive voltage, the second positive voltage, the first negative voltage and the second negative voltage can be detected by a sampling unit in the power connector 6. For example, the specific structure of the sampling unit is as follows: Figure 5 shown.

[0137] Optionally, in some feasible implementations, when the controller 511 can directly detect the change process of the positive voltage drop and the negative voltage drop, the differential amplifier circuit 510 may not be set in the control unit 51. At this time, the controller 511 can compare the positive voltage drop with the preset positive voltage drop threshold to determine whether the connection state between the positive power supply terminal 60 and the positive wire 70 is abnormal, and compare the negative voltage drop with the preset negative voltage drop threshold to determine whether the connection state between the negative power supply terminal 61 and the negative wire 71 is abnormal. For specific implementation, please refer to Fig.10 The corresponding abnormality detection methods of the positive electrode side and the negative electrode side are not described in detail here. Among them, the preset positive electrode voltage drop threshold is less than the fourth threshold, and the preset negative electrode voltage drop threshold is less than the sixth threshold.

[0138] In some possible implementations, such as Fig.11 As shown above Fig.10 The control unit 51 shown may also include a current detection circuit 512. The current detection circuit 512 and the controller 511 may be separately provided, and the current detection circuit 512 may be provided inside or outside the control unit 51. Optionally, the current detection circuit 512 may also be integrated inside the controller 511, and the specific location of the current detection circuit 512 is not limited here.

[0139] The following will Fig.11 The corresponding abnormality detection method on the positive electrode side is described below.

[0140] The current detection circuit 512 is used to detect the current of the positive jack terminal 500, and to output the current of the positive jack terminal 500 to the controller 511. Since the current magnitude remains substantially unchanged during the process of the positive wire 70 outputting the current to the positive jack terminal 500 through the positive power terminal 60, the current of the positive jack terminal 500 is the same as the current at the first connection position.

[0141] Further, the controller 511 is used to obtain the amplified positive impedance of the first connection position based on the amplified positive voltage drop and the current of the positive jack terminal 500, and is used to determine whether the connection state between the positive power terminal 60 and the positive wire 70 is an abnormal state, and the abnormal state includes that the amplified positive impedance is greater than or equal to the fifth threshold value, and at this time, the positive power terminal 60 is in poor contact with the positive wire 70. In other words, the controller 511 is used to determine that the positive power terminal 60 is in poor contact with the positive wire 70 in response to the amplified positive impedance being greater than or equal to the fifth threshold value, and is used to determine that the positive power terminal 60 is in good contact with the positive wire 70 in response to the amplified positive impedance being less than the fifth threshold value.

[0142] In the implementation of the embodiment of the present application, since the positive impedance at the first connection position will increase but the value is small when the positive power terminal 60 and the positive wire 70 are in poor contact, the change process of the positive impedance can be better detected after the amplified positive impedance is obtained based on the amplified positive voltage drop and the current of the positive jack terminal 500, and there is no need to wait for the heat accumulation process at the first connection position, so as to quickly identify whether the connection status between the positive power terminal 60 and the positive wire 70 is an abnormal state, thereby improving the accuracy and speed of abnormal detection on the positive side and improving the safety of use of the communication device 5.

[0143] The following will Fig.11 The corresponding abnormality detection method on the negative electrode side is described below.

[0144] The current detection circuit 512 is used to detect the current of the negative jack terminal 501, and is used to output the current of the negative jack terminal 501 to the controller 511. Since the current magnitude remains substantially unchanged during the process of the negative wire 71 outputting the current to the negative jack terminal 501 through the negative power supply terminal 61, the current of the negative jack terminal 501 is the same as the current of the second connection position.

[0145] Further, the controller 511 is used to obtain the amplified negative electrode impedance of the second connection position based on the amplified negative electrode voltage drop and the current of the negative electrode jack terminal 501, and is used to determine whether the connection state between the negative electrode power supply terminal 61 and the negative electrode wire 71 is an abnormal state, and the abnormal state includes that the amplified negative electrode impedance is greater than or equal to the seventh threshold value, and at this time, the negative electrode power supply terminal 61 is in poor contact with the negative electrode wire 71. In other words, the controller 511 is used to determine that the negative electrode power supply terminal 61 is in poor contact with the negative electrode wire 71 in response to the amplified negative electrode impedance being greater than or equal to the seventh threshold value, and is used to determine that the negative electrode power supply terminal 61 is in good contact with the negative electrode wire 71 in response to the amplified negative electrode impedance being less than the seventh threshold value.

[0146] In the implementation of the embodiment of the present application, since the negative impedance of the second connection position will increase but the value is small when the negative power supply terminal 61 and the negative wire 71 are connected, the change process of the negative impedance can be better detected after the amplified negative voltage drop and the current of the negative jack terminal 501 are obtained, and there is no need to wait for the heat accumulation process of the second connection position, so as to quickly identify whether the connection state of the negative power supply terminal 61 and the negative wire 71 is an abnormal state, which can improve the accuracy and speed of abnormal detection on the negative side, thereby improving the safety of the communication device 5. In addition, the abnormal detection of the positive side and the abnormal detection of the negative side can be taken into account at the same time, and the detection method is more flexible and comprehensive.

[0147] Optionally, in some feasible implementations, when the controller 511 can directly detect the change process of the negative voltage drop, the differential amplifier circuit 510 may not be set in the control unit 51. At this time, the controller 511 is used to obtain the positive impedance of the first connection position based on the positive voltage drop and the current of the positive jack terminal 500, and to compare the positive impedance with a preset positive impedance threshold to determine whether the connection state between the positive power terminal 60 and the positive wire 70 is abnormal. For specific implementation, see Fig.11 The corresponding abnormality detection method on the positive side is not described here. The preset positive impedance threshold is less than the fifth threshold. The controller 511 is also used to obtain the negative impedance of the second connection position based on the negative voltage drop and the current of the negative jack terminal 501, and to compare the negative impedance with the preset negative impedance threshold to determine whether the connection state between the negative power terminal 61 and the negative wire 71 is abnormal. For specific implementation, see Fig.11 The corresponding abnormality detection method of the negative electrode side is not described in detail here. The preset negative electrode impedance threshold is less than the seventh threshold.

[0148] In some possible implementations, such as Fig.12 As shown above Figure 7The female signal terminal 502 shown includes a female switch signal terminal 5028, and the male signal terminal 62 includes a male switch signal terminal 628. The female switch signal terminal 5028 is used to connect to the male switch signal terminal 628. Exemplarily, the first end of the female switch signal terminal 5028 is used to connect to the male switch signal terminal 628, and the second end of the female switch signal terminal 5028 is connected to the control unit 51 through a signal line.

[0149] When the external power supply supplies power to the communication device 5, the control unit 51 is used to output a high-level signal to the female switch signal terminal 5028. Furthermore, the female switch signal terminal 5028 is used to output a high-level signal to the male switch signal terminal 628. The high-level signal is used to control the switch 63 in the power connector 6 to be turned on, so that the external power supply supplies power to the communication device 5 through the power connector 6. During the power supply process of the communication device 5, the control unit 51 is used to output a low-level signal to the female switch signal terminal 5028 after identifying that the connection state of the power connector 6 is an abnormal state. Exemplarily, after the connection state of the power connector 6 is an abnormal state, the temperature of at least one of the first connection position and the second connection position will continue to rise. At this time, the control unit 51 is used to respond to the temperature of any position between the first connection position and the second connection position, and any one of the first temperature and the second temperature is greater than or equal to the preset temperature threshold, and output a low-level signal to the female switch signal terminal 5028. The preset temperature threshold is greater than any one of the first threshold, the second threshold and the third threshold. It can be understood that the Fig.12 The power connector 6 in can refer to Figure 6 The description of the power connector 2 in FIG. 6 is provided in detail. For the technical solution related to the switch 63, please refer to Figure 6 Description related to switch 25 in.

[0150] Further, the female switch signal terminal 5028 is used to output a low-level signal to the male switch signal terminal 628. The low-level signal is used to control the disconnection of the switch 63 in the power connector 6, and the switch 63 is arranged between the positive power terminal 60 and the positive wire 70, or the switch 63 is arranged between the negative power terminal 61 and the negative wire 71. At this time, no current will flow through the power connector 6, which can prevent the temperature of the first connection position and the temperature of the second connection position from further increasing, thereby protecting the communication device 5 from being burned. Similar to the foregoing, in product implementation, a low-level signal can be used to control the disconnection of the switch according to actual needs, and this application is not limited.

[0151] Optionally, in some feasible implementations, the control unit 51 is used to control the power consumption of the communication device 5 to be reduced after the connection state of the power connector 6 is in an abnormal state. Exemplarily, the control unit 51 is used to control a part of the data transmission channels in the communication device 5 to be turned off, thereby reducing the power consumption of the communication device 5, and preventing the temperature of the first connection position and the temperature of the second connection position from further increasing, thereby protecting the communication device 5 from being burned.

[0152] In some feasible implementations, the female switch signal terminal 5028 can also be arranged in the above Fig.10 or Fig.11 In the device connector 50 shown, the switch 63 and the male switch signal terminal 628 can also be correspondingly arranged in the above Fig.10 or Fig.11 In the power connector 6 shown.

[0153] In some feasible implementations, the control unit 51 or the controller 511 is used to output an alarm message to the user interface in response to the connection state of the power connector 6 being an abnormal state. The user interface may be a display interface corresponding to the user terminal where the operation and maintenance personnel are located. The alarm message includes at least one abnormal operating parameter of the temperature of any position between the first connection position and the second connection position, the first temperature, the second temperature, the amplified positive voltage drop or the positive voltage drop, the amplified negative voltage drop or the negative voltage drop, the amplified positive impedance or the positive impedance, the amplified negative impedance or the negative impedance, which may be specifically determined by the actual structure of the power connector 6 and is not limited here. In addition, the alarm message is used to instruct the operation and maintenance personnel to repair the power connector 6 so that the connection state of the power connector 6 is restored from the abnormal state to the normal state, thereby improving the reliability of the power connector 6 and improving the safety of use of the communication device 5.

[0154] In the above Figures 7 to 12 In the corresponding embodiment, any threshold value among the first threshold value, the second threshold value, the third threshold value, the fourth threshold value, the fifth threshold value, the sixth threshold value, the seventh threshold value, the preset positive voltage drop threshold value, the preset negative voltage drop threshold value, the preset positive impedance threshold value, the preset negative impedance threshold value and the preset temperature threshold value may be a preset value, or a value determined according to the components used in the power connector 6. The above threshold values ​​may be any values, may be equal or unequal, and the present application does not limit them.

[0155] The following will be combined Figures 13 to 17 The power distribution equipment and its working principle provided in the embodiments of the present application are illustrated.

[0156] See also Fig.13 , Fig.13 is a structural block diagram of the power distribution equipment provided in the embodiment of the present application. Fig.13As shown, the power distribution device 8 includes a power distribution connector 80 and a control unit 81, and the power distribution connector 80 includes a positive power terminal 800, a negative power terminal 801, and a sampling unit 802. Among them, the first end of the positive power terminal 800 is used to connect to the positive wire 90 of the power cable 9, and the first end of the negative power terminal 801 is used to connect to the negative wire 91 of the power cable 9.

[0157] The sampling unit 802 is used to detect the working parameters of the power distribution connector 80, and to output the working parameters to the control unit 81. The working parameter may be one of temperature or voltage. Further, the control unit 81 is used to determine whether the connection state of the power distribution connector 80 is an abnormal state based on the working parameter. The connection state of the power distribution connector 80 includes at least one of the connection state between the positive power terminal 800 and the positive wire 90, and the connection state between the negative power terminal 801 and the negative wire 91.

[0158] By implementing the embodiments of the present application, the working parameters of the distribution connector 80 are detected to identify in advance whether the connection status of the distribution connector 80 is abnormal, which can prevent the distribution connector 80 from heating up and carbonizing or even burning the distribution equipment 8, thereby improving the reliability of the distribution connector 80 and further improving the power supply safety of the distribution equipment 8.

[0159] In some feasible embodiments, when one of the connection states between the positive power terminal 800 and the positive wire 90, and the connection state between the negative power terminal 801 and the negative wire 91 is an abnormal state, or both connection states are abnormal states, it can be determined that the connection state of the distribution connector 80 is an abnormal state. The specific requirements can be designed according to actual conditions, and this application is not limited.

[0160] In some feasible implementations, the power distribution connector 80 and the control unit 81 may be separately provided, or the control unit 81 may be integrated inside the power distribution connector 80, and the specific location of the control unit 81 is not limited. For the convenience of description, the following description will be based on the example that the control unit 81 is integrated inside the power distribution connector 80.

[0161] In some possible implementations, such as Fig.14 As shown above Fig.13 The sampling unit 802 shown includes a temperature detection element 8021, which is arranged between a first connection position c and a second connection position d. The first connection position c is the connection position between the positive power terminal 800 and the positive wire 90, and the second connection position d is the connection position between the negative power terminal 801 and the negative wire 91. Fig.13The connector housing 803 is also shown, and the positive power terminal 800, the negative power terminal 801 and the temperature detection element 8021 are all arranged inside the connector housing 803. The temperature detection element 8021 is connected to the control unit 81 through a signal line.

[0162] The temperature detection element 8021 is used to detect the temperature at the location of the temperature detection element 8021. At this time, the working parameter of the power distribution connector 80 is the temperature at the location of the temperature detection element 8021. The temperature at the location of the temperature detection element 231 is close to the larger temperature of the temperature at the first connection location c and the temperature at the second connection location d.

[0163] Further, the control unit 81 is used to determine whether the connection state of the power distribution connector 80 is an abnormal state, and the abnormal state includes that the temperature at the location of the temperature detection element 8021 is greater than or equal to the first threshold value, and at this time, the power distribution connector 80 is in poor contact with the power cable 9. In other words, the control unit 81 is used to determine that the power distribution connector 80 is in poor contact with the power cable 9 in response to the temperature at the location of the temperature detection element 8021 being greater than or equal to the first threshold value, and is used to determine that the power distribution connector 80 is in good contact with the power cable 9 in response to the temperature at the location of the temperature detection element 8021 being less than the first threshold value.

[0164] When implementing the embodiment of the present application, since poor contact between the distribution connector 80 and the power cable 9 will cause a local temperature increase near at least one of the first connection position c and the second connection position d, the temperature of the position where the temperature detection element 8021 is located can be detected to identify in advance whether the distribution connector 80 and the power cable 9 are in poor contact, thereby achieving the most accurate detection feedback effect and lower cost.

[0165] In some possible implementations, such as Fig.14 As shown above Fig.13The power distribution connector 80 shown also includes a positive conductor 804, a negative conductor 805 and a switch 806. For example, the switch 806 can be one of a relay, a contactor and a bidirectional switch. Among them, the third end of the positive power terminal 800 is connected to the first end of the positive conductor 804, and the second end of the positive conductor 804 is used to connect to the positive pole of the external power supply. For example, the second end of the positive conductor 804 is used to pass through the connector housing 803 to connect to the positive pole of the external power supply, and the positive conductor 804 can also be called a positive front conductor. The third end of the negative power terminal 801 is connected to the first end of the negative conductor 805, and the second end of the negative conductor 805 is used to connect to the negative pole of the external power supply. For example, the second end of the negative conductor 805 is used to pass through the connector housing 803 to connect to the negative pole of the external power supply, and the negative conductor 805 can also be called a negative front conductor. The switch 806 can be arranged between the third end of the negative power terminal 801 and the first end of the negative conductor 805. Optionally, the switch 806 may also be disposed between the third end of the positive power supply terminal 800 and the first end of the positive conductor 804, which is not specifically limited herein. The control end 8061 of the switch 806 is connected to the control unit 81 via a signal line, so that the control unit 81 can control the switch 806 to be turned on or off.

[0166] When the external power supply supplies power to the power distribution connector 80, the control unit 81 is used to control the switch 806 to be turned on, so that the power distribution device 80 supplies power to the power-consuming device through the power cable 9. For example, the power-consuming device may be Figures 7 to 12 The communication device 5 shown. In the process of the power distribution device 80 supplying power to the power-consuming device, the control unit 81 is used to control the switch 806 to disconnect after identifying that the connection state of the power distribution connector 80 is abnormal. In a specific implementation, after the connection state of the power distribution connector 80 is abnormal, the temperature of at least one of the first connection position c and the second connection position d will continue to rise. At this time, the control unit 51 is used to control the switch 806 to disconnect in response to the temperature at the position where the temperature detection element 8021 is located being greater than or equal to the first preset temperature threshold. The first preset temperature threshold is greater than the first threshold.

[0167] When implementing the embodiment of the present application, no current will flow through the distribution connector 80 after the connection state of the distribution connector 80 is abnormal, which can prevent the temperature of the first connection position c and the temperature of the second connection position d from further increasing, thereby protecting the distribution equipment 8 from being burned and providing higher safety.

[0168] In some possible implementations, such as Fig.15 As shown above Fig.13The sampling unit 802 shown includes a first temperature detection element 8022 and a second temperature detection element 8023, wherein the first temperature detection element 8022 is arranged on a side of the first connection position c away from the second connection position d, and the second temperature detection element 8023 is arranged on a side of the second connection position d away from the first connection position c. Fig.13 The device also includes a connector housing 803, and the positive power supply terminal 800, the negative power supply terminal 801, the first temperature detection element 8022, and the second temperature detection element 8023 are all arranged inside the connector housing 803. The first temperature detection element 8022 is connected to the control unit 51 through a signal line, and the second temperature detection element 8023 is connected to the control unit 51 through a signal line.

[0169] The first temperature detection element 8022 is used to detect a first temperature at a location where the first temperature detection element 8022 is located, and is used to output a first temperature to the control unit 81, and the first temperature is close to the temperature of the first connection location c. The second temperature detection element is used to detect a second temperature at a location where the second temperature detection element 8023 is located, and is used to output a second temperature to the control unit 81, and the second temperature is close to the temperature of the second connection location d. At this time, the operating parameters of the power distribution connector 80 include the first temperature and the second temperature.

[0170] Further, the control unit 81 is used to determine whether the connection state between the positive power terminal 800 and the positive wire 90 is an abnormal state, and the abnormal state includes that the first temperature is greater than or equal to the second threshold value, and the positive power terminal 800 is in poor contact with the positive wire 90. In other words, the control unit 81 is used to determine that the positive power terminal 800 is in poor contact with the positive wire 90 in response to the first temperature being greater than or equal to the second threshold value, and is used to determine that the positive power terminal 800 is in good contact with the positive wire 90 in response to the first temperature being less than the second threshold value.

[0171] The control unit 81 is used to determine whether the connection state between the negative power terminal 801 and the negative wire 91 is an abnormal state, and the abnormal state includes that the second temperature is greater than or equal to the third threshold value, and the negative power terminal 801 and the negative wire 91 are in poor contact. In other words, the control unit 81 is used to determine that the negative power terminal 801 and the negative wire 91 are in poor contact in response to the second temperature being greater than or equal to the third threshold value, and is used to determine that the negative power terminal 801 and the negative wire 91 are in good contact in response to the second temperature being less than the third threshold value. Among them, the second threshold value and the third threshold value may be equal or different, and this application does not limit it.

[0172] In the implementation of the embodiment of the present application, when the positive power terminal 800 is in poor contact with the positive wire 90, the local temperature near the first connection position c will increase, and when the negative power terminal 801 is in poor contact with the negative wire 91, the local temperature near the second connection position d will increase. Therefore, abnormality detection on the positive side and abnormality detection on the negative side can be performed based on the first temperature and the second temperature respectively, the accuracy of abnormality detection is higher, and the detection method is more flexible and comprehensive.

[0173] In some possible implementations, such as Fig.15 As shown above Fig.13 The power distribution connector 80 shown in the figure further includes a positive conductor 804, a negative conductor 805 and a switch 806. The connection relationship between the positive conductor 804, the negative conductor 805 and the switch 806 and other components can be seen in FIG. Fig.14 The corresponding embodiments are not described here in detail. After the connection state of the power distribution connector 80 is abnormal, the temperature of at least one of the first connection position c and the second connection position d will continue to rise. The control unit 51 is used to control the switch 806 to disconnect in response to any temperature of the first temperature and the second temperature being greater than or equal to the second preset temperature threshold, thereby preventing the temperature of the first connection position c and the temperature of the second connection position d from further rising, thereby improving safety. Among them, the second preset temperature threshold is greater than any threshold of the second threshold and the third threshold.

[0174] In some possible implementations, such as Fig.16 As shown above Fig.13 The sampling unit 802 shown includes a first positive probe 8024, a second positive probe 8025, a first negative probe 8026, and a second negative probe 8027. The control unit 81 includes a differential amplifier circuit 810 and a controller 811. Exemplarily, the controller 811 may be a processing chip inside the power distribution device 8. The differential amplifier circuit 810 and the controller 811 may be separately provided. In this case, the differential amplifier circuit 810 may be provided inside or outside the control unit 81. When the differential amplifier circuit 810 is provided outside the control unit 81, the controller 811 is the control unit 81. Optionally, the differential amplifier circuit 810 may also be integrated inside the controller 811. The specific location of the differential amplifier circuit 810 is not limited here.

[0175] The first end of the first positive probe 8024 is connected to the positive lead 90, and the second end of the first positive probe 8024 is connected to the first positive input terminal of the differential amplifier circuit 810. Exemplarily, the second end of the first positive probe 8024 is connected to the first positive input terminal of the differential amplifier circuit 810 through a signal line. The first end of the second positive probe 8025 is connected to the second end of the positive power supply terminal 800, and the second end of the second positive probe 8025 is connected to the second positive input terminal 810 of the differential amplifier circuit. Exemplarily, the second end of the second positive probe 8025 is connected to the second positive input terminal 810 of the differential amplifier circuit through a signal line.

[0176] The first end of the first negative probe 8026 is connected to the negative lead 91, and the second end of the first negative probe 8026 is connected to the first negative input terminal of the differential amplifier circuit 810. Exemplarily, the second end of the first negative probe 8026 is connected to the first negative input terminal of the differential amplifier circuit 810 through a signal line. The first end of the second negative probe 8027 is connected to the second end of the negative power supply terminal 801, and the second end of the second negative probe 8027 is connected to the second negative input terminal of the differential amplifier circuit 810. Exemplarily, the second end of the second negative probe 8027 is connected to the second negative input terminal of the differential amplifier circuit 810 through a signal line. The output end of the differential amplifier circuit 810 is connected to the controller 811 through a signal line.

[0177] Above Fig.13 The connector housing 803 is also shown, and the positive power terminal 800 , the negative power terminal 801 , the first positive probe 8024 , the second positive probe 8025 , the first negative probe 8026 and the second negative probe 8027 are all arranged inside the connector housing 803 .

[0178] The following will Fig.15 The corresponding abnormality detection method on the positive electrode side is described below.

[0179] The first positive probe 8024 is used to detect the first positive voltage of the positive wire 90, and is used to output the first positive voltage to the differential amplifier circuit 810. The second positive probe 8025 is used to detect the second positive voltage of the positive power terminal 800, and is used to output the second positive voltage to the differential amplifier circuit 810. At this time, the operating parameters of the power distribution connector 80 include the first positive voltage and the second positive voltage.

[0180] Further, the differential amplifier circuit 810 is used to amplify the voltage difference between the first positive electrode voltage and the second positive electrode voltage to obtain an amplified positive electrode voltage drop at the first connection position c, and to output the amplified positive electrode voltage drop to the controller 811. The voltage difference between the first positive electrode voltage and the second positive electrode voltage is the positive electrode voltage drop at the first connection position c.

[0181] Furthermore, the controller 811 is used to determine whether the connection state between the positive power terminal 800 and the positive wire 90 is an abnormal state, and the abnormal state includes that the amplified positive voltage drop is greater than or equal to the fourth threshold value, and the positive power terminal 800 is in poor contact with the positive wire 90. In other words, the controller 811 is used to determine that the positive power terminal 800 is in poor contact with the positive wire 90 in response to the amplified positive voltage drop being greater than or equal to the fourth threshold value, and is used to determine that the positive power terminal 800 is in good contact with the positive wire 90 in response to the amplified positive voltage drop being less than the fourth threshold value.

[0182] In implementing the embodiment of the present application, since the positive voltage drop at the first connection position c will increase but the value is small when the positive power terminal 800 and the positive wire 90 are in poor contact, the differential amplifier circuit 810 can better detect the change process of the positive voltage drop after amplifying the positive voltage drop, and there is no need to wait for the heat accumulation process at the first connection position c, thereby quickly identifying whether the connection status between the positive power terminal 800 and the positive wire 90 is an abnormal state, which can improve the accuracy and speed of abnormal detection on the positive side and provide higher safety.

[0183] The following will Fig.15 The corresponding abnormality detection method on the negative electrode side is described below.

[0184] The first negative probe 8026 is used to detect the first negative voltage of the negative wire 91, and is used to output the first negative voltage to the differential amplifier circuit 810. The second negative probe 8027 is used to detect the second negative voltage of the negative power supply terminal 801, and is used to output the second negative voltage to the differential amplifier circuit 810. At this time, the operating parameters of the power distribution connector 80 also include the first negative voltage and the second negative voltage. The connection state of the power distribution connector 80 also includes the connection state between the negative power supply terminal 801 and the negative wire 91.

[0185] Further, the differential amplifier circuit 810 is used to amplify the voltage difference between the first negative electrode voltage and the second negative electrode voltage to obtain an amplified negative electrode voltage drop at the second connection position d, and to output the amplified negative electrode voltage drop to the controller 811. The voltage difference between the first negative electrode voltage and the second negative electrode voltage is the negative electrode voltage drop at the second connection position d.

[0186] Furthermore, the controller 811 is used to determine whether the connection state between the negative power supply terminal 801 and the negative wire 91 is an abnormal state, and the abnormal state includes that the amplified negative voltage drop is greater than or equal to the sixth threshold value, and at this time, the negative power supply terminal 801 is in poor contact with the negative wire 91. In other words, the controller 811 is used to determine that the negative power supply terminal 801 is in poor contact with the negative wire 91 in response to the amplified negative voltage drop being greater than or equal to the sixth threshold value, and is used to determine that the negative power supply terminal 801 is in good contact with the negative wire 91 in response to the amplified negative voltage drop being less than the sixth threshold value.

[0187] In the implementation of the embodiment of the present application, since the negative voltage drop at the second connection position d will increase but the value is small when the negative power terminal 801 is in poor contact with the negative wire 91, the differential amplifier circuit 810 can better detect the change process of the negative voltage drop after amplifying the negative voltage drop, and there is no need to wait for the heat accumulation process at the second connection position d, so as to quickly identify whether the connection state between the negative power terminal 801 and the negative wire 91 is abnormal, which can improve the accuracy and speed of abnormal detection on the negative side, and is safer. In addition, the abnormal detection on the positive side and the abnormal detection on the negative side can be taken into account at the same time, and the detection method is more flexible and comprehensive.

[0188] Optionally, in some feasible implementations, when the controller 811 can directly detect the change process of the positive voltage drop and the negative voltage drop, the differential amplifier circuit 810 may not be set in the control unit 81. At this time, the controller 811 can compare the positive voltage drop with the preset positive voltage drop threshold to determine whether the connection state between the positive power supply terminal 800 and the positive wire 90 is abnormal, and compare the negative voltage drop with the preset negative voltage drop threshold to determine whether the connection state between the negative power supply terminal 801 and the negative wire 91 is abnormal. For specific implementation, please refer to Fig.15 The corresponding abnormality detection methods of the positive electrode side and the negative electrode side are not described in detail here. Among them, the preset positive electrode voltage drop threshold is less than the fourth threshold, and the preset negative electrode voltage drop threshold is less than the sixth threshold.

[0189] In some feasible implementations, as described above Fig.16 As shown above Fig.13 The power distribution connector 80 shown in the figure further includes a positive conductor 804, a negative conductor 805 and a switch 806. The connection relationship between the positive conductor 804, the negative conductor 805 and the switch 806 and other components in the power distribution connector 80 can be seen in FIG. Fig.14The corresponding embodiments are not described in detail here. After the connection state of the power distribution connector 80 is abnormal, the voltage drop of at least one of the first connection position c and the second connection position d will continue to increase. At this time, the controller 811 is used to control the switch 806 to disconnect in response to the amplified positive voltage drop and the positive voltage drop of the first connection position c, and the amplified negative voltage drop and the negative voltage drop of the second connection position d being greater than or equal to the first preset voltage drop threshold. At this time, no current will flow through the power distribution connector 80, which can avoid further increase in the voltage drop of the first connection position c and the voltage drop of the second connection position d, and the reliability of the power distribution connector 80 is higher. Among them, the first preset voltage drop threshold is greater than any of the above-mentioned fourth threshold, the preset positive voltage drop threshold, the sixth threshold, and the preset negative voltage drop threshold.

[0190] In some possible implementations, such as Fig.17 As shown above Fig.16 The control unit 81 shown also includes a current detection circuit 812. The current detection circuit 812 and the controller 811 can be separately provided, and in this case, the current detection circuit 812 can also be provided outside the control unit 81. Optionally, the current detection circuit 812 can also be integrated inside the controller 811, and the specific location of the current detection circuit 812 is not limited here.

[0191] The following will Fig.17 The corresponding abnormality detection method on the positive electrode side is described below.

[0192] The current detection circuit 812 is used to detect the current of the positive power terminal 800 and output the current of the positive power terminal 800 to the controller 811. The current of the positive power terminal 800 is the same as the current of the first connection position c.

[0193] Further, the controller 811 is used to obtain the amplified positive impedance of the first connection position based on the amplified positive voltage drop and the current of the positive power terminal 800, and is used to determine whether the connection state between the positive power terminal 800 and the positive wire 90 is an abnormal state, and the abnormal state includes that the amplified positive impedance is greater than or equal to the fifth threshold value, and at this time, the positive power terminal 800 is in poor contact with the positive wire 90. In other words, the controller 811 is used to determine that the positive power terminal 800 is in poor contact with the positive wire 90 in response to the amplified positive impedance being greater than or equal to the fifth threshold value, and is used to determine that the positive power terminal 800 is in good contact with the positive wire 90 in response to the amplified positive impedance being less than the fifth threshold value.

[0194] In implementing the embodiment of the present application, since the positive impedance of the first connection position c will increase but the value is small when the positive power terminal 800 and the positive wire 90 are in poor contact, the change process of the positive impedance can be better detected after the amplified positive impedance is obtained based on the amplified positive voltage drop and the current of the positive power terminal 800, and there is no need to wait for the heat accumulation process of the first connection position c, so as to quickly identify whether the connection status between the positive power terminal 800 and the positive wire 90 is an abnormal state, thereby improving the accuracy and speed of abnormal detection on the positive side.

[0195] The following will Fig.17 The corresponding abnormality detection method on the negative electrode side is described below.

[0196] The current detection circuit 812 is used to detect the current of the negative power terminal 801 and output the current of the negative power terminal 801 to the controller. The current of the negative power terminal 801 is the same as the current of the second connection position d.

[0197] Further, the controller 811 is used to obtain the amplified negative electrode impedance of the second connection position d based on the amplified negative electrode voltage drop and the current of the negative power supply terminal 801, and is used to determine whether the connection state between the negative power supply terminal 801 and the negative wire 91 is an abnormal state, and the abnormal state includes that the amplified negative electrode impedance is greater than or equal to the seventh threshold value, and at this time, the negative power supply terminal 801 is in poor contact with the negative wire 91. In other words, the controller 811 is used to determine that the negative power supply terminal 801 is in poor contact with the negative wire 91 in response to the amplified negative electrode impedance being greater than or equal to the seventh threshold value, and is used to determine that the negative power supply terminal 801 is in good contact with the negative wire 91 in response to the amplified negative electrode impedance being less than the seventh threshold value.

[0198] In the implementation of the embodiment of the present application, since the negative impedance of the second connection position d will increase but the value is small when the negative power terminal 801 is in poor contact with the negative wire 91, the change process of the negative impedance can be better detected after the amplified negative voltage drop and the current of the negative power terminal 801 are obtained, and there is no need to wait for the heat accumulation process of the second connection position d, so as to quickly identify whether the connection state between the negative power terminal 801 and the negative wire 91 is abnormal, which can improve the accuracy and speed of abnormal detection on the negative side. In addition, the abnormal detection on the positive side and the abnormal detection on the negative side can be taken into account at the same time, and the detection method is more flexible and comprehensive.

[0199] Optionally, in some feasible implementations, when the controller 811 can directly detect the change process of the positive voltage drop and the negative voltage drop, the differential amplifier circuit 810 may not be set in the control unit 81. At this time, the controller 811 is used to obtain the positive impedance of the first connection position c based on the positive voltage drop and the current of the positive power supply terminal 800, and to compare the positive impedance with a preset positive impedance threshold to determine whether the connection state between the positive power supply terminal 800 and the positive wire 90 is an abnormal state. For specific implementation, see Fig.17 The corresponding abnormality detection method on the positive side is not described here. The preset positive impedance threshold is less than the fifth threshold. The controller 811 is also used to obtain the negative impedance of the second connection position d based on the negative voltage drop and the current of the negative power supply terminal 801, and to compare the negative impedance with the preset negative impedance threshold to determine whether the connection state between the negative power supply terminal 801 and the negative wire 91 is abnormal. For specific implementation, see Fig.17 The corresponding abnormality detection method of the negative electrode side is not described in detail here. The preset negative electrode impedance threshold is less than the seventh threshold.

[0200] In some feasible implementations, after the connection state of the power distribution connector 80 is abnormal, the impedance of at least one of the first connection position c and the second connection position d will continue to increase. At this time, the controller 811 is used to control the switch 806 to disconnect in response to any impedance of the amplified positive impedance and the positive impedance of the first connection position c, and the amplified negative impedance and the negative impedance of the second connection position d being greater than or equal to the first preset impedance threshold, so as to avoid further increase of the impedance of the first connection position c and the impedance of the second connection position d, and the reliability of the power distribution connector 80 is higher. Among them, the first preset impedance threshold is greater than any threshold of the fourth threshold, the preset positive impedance threshold, the sixth threshold, and the preset negative impedance threshold.

[0201] In some feasible implementations, the control unit 81 or the controller 811 is used to output an alarm message to the user interface in response to the connection state of the power distribution connector 80 being an abnormal state to instruct the operation and maintenance personnel to repair the power distribution connector 80, thereby further improving the reliability of the power distribution connector 80. The alarm message includes at least one abnormal operating parameter of the temperature of any position between the first connection position c and the second connection position d, the first temperature, the second temperature, the amplified positive voltage drop or the positive voltage drop, the amplified negative voltage drop or the negative voltage drop, the amplified positive impedance or the positive impedance, and the amplified negative impedance or the negative impedance, which is not limited here.

[0202] In the above Figures 13 to 17In the corresponding embodiments, any of the first threshold, the second threshold, the third threshold, the fourth threshold, the fifth threshold, the sixth threshold, the seventh threshold, the first preset temperature threshold, the second preset temperature threshold, the preset positive voltage drop threshold, the preset negative voltage drop threshold, the first preset voltage drop threshold, the preset positive impedance threshold, the preset negative impedance threshold and the first preset impedance threshold can be a preset value, or a value determined according to the components used in the distribution connector 80.

[0203] The following will be combined Figure 18 to Figure 19 The wireless communication system and its working principle provided in the embodiments of the present application are illustrated by way of example.

[0204] See also Fig.18 , Fig.18 is a structural block diagram of a wireless communication system provided by an embodiment of the present application. Fig.18 As shown, the wireless communication system 18 includes a power connector 180 and a communication device 181. For example, the power connector 180 may be the above-mentioned Figures 2 to 6 The power connector 2 shown, the communication device 181 can be Figures 7 to 12 The communication device 5 shown. The power connector 180 is used to receive power from an external power source to power the communication device 181, and the external power source may be a distribution box or a distribution cabinet. It is understandable that the communication device 181 can identify in advance whether the connection state of the power connector 180 is abnormal, thereby improving the reliability of the power connector 180, and avoiding the power connector 180 from heating and carbonizing or even burning the communication device 181, thereby improving the safety of the wireless communication system 18.

[0205] In some possible implementations, such as Fig.19 As shown above Fig.18 The wireless communication system 18 shown also includes a power distribution device 182. For example, the power distribution device 182 may be the above-mentioned Figures 13 to 17 The power distribution device 8 shown, for example, the power distribution device 182 can be a power distribution box or a power distribution cabinet. The power distribution device 182 is used to supply power to the communication device 181 through the power connector 180. It is understandable that the power distribution device 182 can identify in advance whether the connection state of the internal power distribution connector is abnormal, which can avoid the power distribution connector heating and carbonization or even burning the power distribution device 182. At this time, the abnormal detection of the power distribution connector and the power connector 180 can be taken into account at the same time, and the security of the wireless communication system 18 is further improved. Optionally, Fig.19 The power connector 180 and communication device 181 shown may also be ordinary power connectors and communication devices, that is, in this case, no new sampling unit and male signal terminal may be added to the power connector 180, and no new female signal terminal may be added to the communication device 181, and no specific restrictions are made here.

[0206] It should be noted that the above terms “first” and “second” are only used for descriptive purposes and should not be understood as indicating or implying relative importance.

[0207] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A power connector, characterized in that: The power connector comprises a positive power terminal, a negative power terminal, a male signal terminal and a sampling unit, wherein the first end of the positive power terminal is used to connect to the positive wire in the power cable, the first end of the negative power terminal is used to connect to the negative wire in the power cable, the sampling unit is connected to the first end of the male signal terminal, and the second end of the male signal terminal is used to connect to the female signal terminal in the device connector; The sampling unit is used to detect the working parameters of the power connector and output the working parameters to the male signal terminal; The male signal terminal is used to output the working parameter to the female signal terminal; The operating parameter is used to determine whether the connection state of the power connector is an abnormal state.

2. The power connector according to claim 1, characterized in that: The sampling unit includes a temperature detection element, and the temperature detection element is arranged between a first connection position and a second connection position, the first connection position is a connection position between the positive power supply terminal and the positive wire, and the second connection position is a connection position between the negative power supply terminal and the negative wire; The working parameter is the temperature at the location of the temperature detection element; When the temperature at the location of the temperature detection element is greater than or equal to a first threshold, the connection state of the power connector is an abnormal state.

3. The power connector according to claim 1, characterized in that: The sampling unit comprises a first temperature detection element and a second temperature detection element, the first temperature detection element is arranged at a side of a first connection position away from a second connection position, the second temperature detection element is arranged at a side of the second connection position away from the first connection position, the first connection position is a connection position between the positive power supply terminal and the positive wire, and the second connection position is a connection position between the negative power supply terminal and the negative wire; The male signal terminal includes a male positive signal terminal and a male negative signal terminal, and the female signal terminal includes a female positive signal terminal and a female negative signal terminal; the first temperature detection element is connected to the first end of the male positive signal terminal, and the second end of the male positive signal terminal is used to connect to the female positive signal terminal; the second temperature detection element is connected to the first end of the male negative signal terminal, and the second end of the male negative signal terminal is used to connect to the female negative signal terminal.

4. The power connector according to claim 3, characterized in that: The operating parameters include a first temperature at a location where the first temperature detection element is located and a second temperature at a location where the second temperature detection element is located, and the connection state of the power connector includes at least one of a connection state between the positive power terminal and the positive wire and a connection state between the negative power terminal and the negative wire; The first temperature detection element is used to detect the first temperature and output the first temperature through the male positive signal terminal; The second temperature detection element is used to detect the second temperature and output the second temperature through the male negative signal terminal; When the first temperature is greater than or equal to a second threshold, the connection state between the positive power terminal and the positive wire is abnormal; when the second temperature is greater than or equal to a third threshold, the connection state between the negative power terminal and the negative wire is abnormal.

5. The power connector according to claim 1, characterized in that: The sampling unit includes a first positive probe, a second positive probe, a first negative probe and a second negative probe, the male signal terminal includes a first male positive signal terminal, a second male positive signal terminal, a first male negative signal terminal and a second male negative signal terminal; the female signal terminal includes a first female positive signal terminal, a second female positive signal terminal, a first female negative signal terminal and a second female negative signal terminal; The first positive probe is arranged between the positive wire and the first end of the first male positive signal terminal, the second end of the first male positive signal terminal is used to connect with the first female positive signal terminal, the second positive probe is arranged between the second end of the positive power terminal and the first end of the second male positive signal terminal, and the second end of the second male positive signal terminal is used to connect with the second female positive signal terminal; The first negative pole probe is arranged between the negative pole wire and the first end of the first male negative pole signal terminal, and the second end of the first male negative pole signal terminal is used to connect with the first female negative pole signal terminal. The second negative pole probe is arranged between the second end of the negative pole power terminal and the first end of the second male negative pole signal terminal, and the second end of the second male negative pole signal terminal is used to connect with the second female negative pole signal terminal.

6. The power connector according to claim 5, characterized in that: The operating parameters include a first positive voltage of the positive wire and a second positive voltage of the positive power terminal; the connection state of the power connector includes a connection state between the positive power terminal and the positive wire; The first positive electrode probe is used to detect the first positive electrode voltage, and is used to output the first positive electrode voltage through the first male positive electrode signal terminal; The second positive electrode probe is used to detect the second positive electrode voltage, and is used to output the second positive electrode voltage through the second male positive electrode signal terminal; Among them, the first positive voltage and the second positive voltage are used to determine the positive voltage drop at a first connection position, and the first connection position is the connection position between the positive power supply terminal and the positive wire; when the positive voltage drop is greater than or equal to a fourth threshold, the connection state between the positive power supply terminal and the positive wire is an abnormal state.

7. The power connector according to claim 5 or 6, characterized in that: The operating parameters also include a first negative voltage of the negative wire and a second negative voltage of the negative power terminal; the connection state of the power connector also includes a connection state between the negative power terminal and the negative wire; The first negative electrode probe is used to detect the first negative electrode voltage, and is used to output the first negative electrode voltage through the first male negative electrode signal terminal; The second negative electrode probe is used to detect the second negative electrode voltage, and is used to output the second negative electrode voltage through the second male negative electrode signal terminal; Among them, the first negative electrode voltage and the second negative electrode voltage are used to determine the negative electrode voltage drop at the second connection position, and the second connection position is the connection position between the negative electrode power supply terminal and the negative electrode wire; when the negative electrode voltage drop is greater than or equal to the fifth threshold value, the connection state between the negative electrode power supply terminal and the negative electrode wire is an abnormal state.

8. The power connector according to any one of claims 1 to 7, characterized in that: The power connector further includes a switch, the male signal terminal includes a male switch signal terminal, and the female signal terminal includes a female switch signal terminal; wherein the switch is arranged between the first end of the positive power terminal and the positive wire, or the switch is arranged between the first end of the negative power terminal and the negative wire; the control end of the switch is connected to the first end of the male switch signal terminal, and the second end of the male switch signal terminal is used to connect to the female switch signal terminal; After the connection state of the power connector is abnormal, the male switch signal terminal is used to receive a low-level signal from the female switch signal terminal, and the low-level signal is used to control the switch to be disconnected.

9. A communication device, characterized in that: The communication device comprises a device connector and a control unit, wherein the device connector comprises a positive jack terminal, a negative jack terminal and a female signal terminal; wherein the positive jack terminal is used to be plugged into a positive power terminal in a power connector, and the negative jack terminal is used to be plugged into a negative power terminal in the power connector; The female signal terminal is used to receive the operating parameters of the power connector from the male signal terminal in the power connector, and is used to output the operating parameters to the control unit; The control unit is used to determine whether the connection state of the power connector is an abnormal state based on the operating parameter.

10. The communication device according to claim 9, characterized in that The operating parameter is the temperature of any position between a first connection position and a second connection position, the first connection position being the connection position between the positive power terminal and the positive wire in the power cable, and the second connection position being the connection position between the negative power terminal and the negative wire in the power cable; The control unit is used to determine whether the connection state of the power connector is an abnormal state, and the abnormal state includes that the temperature of any position is greater than or equal to a first threshold.

11. The communication device according to claim 9, characterized in that The female signal terminal includes a female positive signal terminal and a female negative signal terminal, and the male signal terminal includes a male positive signal terminal and a male negative signal terminal; wherein the female positive signal terminal is used to connect with the male positive signal terminal, and the female negative signal terminal is used to connect with the male negative signal terminal; The working parameter includes a first temperature at any position on a side of a first connection position away from a second connection position, the first connection position is a connection position between the positive power terminal and the positive wire in the power cable, and the second connection position is a connection position between the negative power terminal and the negative wire in the power cable; the connection state of the power connector includes a connection state between the positive power terminal and the positive wire; The female positive signal terminal is used to receive the first temperature from the male positive signal terminal, and is used to output the first temperature to the control unit; The control unit is used to determine whether the connection state between the positive power terminal and the positive wire is an abnormal state, and the abnormal state includes that the first temperature is greater than or equal to a second threshold.

12. The communication device according to claim 11, characterized in that The operating parameter further includes a second temperature at any position on a side of the second connection position away from the first connection position, and the connection state of the power connector further includes a connection state between the negative power terminal and the negative wire; The female negative signal terminal is used to receive the second temperature from the male negative signal terminal, and is used to output the second temperature to the control unit; The control unit is used to determine whether the connection state between the negative power terminal and the negative wire is an abnormal state, and the abnormal state includes that the second temperature is greater than or equal to a third threshold.

13. The communication device according to claim 9, characterized in that The female signal terminal includes a first female positive signal terminal, a second female positive signal terminal, a first female negative signal terminal and a second female negative signal terminal; the male signal terminal includes a first male positive signal terminal and a second male positive signal terminal, a first male negative signal terminal and a second male negative signal terminal; the control unit includes a differential amplifier circuit; The first end of the first female positive signal terminal is used to connect to the first male positive signal terminal, the second end of the first female positive signal terminal is connected to the first positive input terminal of the differential amplifier circuit, the first end of the second female positive signal terminal is used to connect to the second male positive signal terminal, and the second end of the second female positive signal terminal is connected to the second positive input terminal of the differential amplifier circuit; The first end of the first female negative signal terminal is used to connect to the first male negative signal terminal, and the second end of the first female negative signal terminal is connected to the first negative input terminal of the differential amplifier circuit. The first end of the second female negative signal terminal is used to connect to the second male negative signal terminal, and the second end of the second female negative signal terminal is connected to the second negative input terminal of the differential amplifier circuit.

14. The communication device according to claim 13, characterized in that The operating parameters include a first positive voltage of a positive wire in a power cable and a second positive voltage of the positive power terminal, and the connection state of the power connector includes a connection state between the positive power terminal and the positive wire; the control unit also includes a controller; The first female positive signal terminal is used to receive the first positive voltage from the first male positive signal terminal, and is used to output the first positive voltage to the differential amplifier circuit; The second female positive signal terminal is used to receive the second positive voltage from the second male positive signal terminal, and is used to output the second positive voltage to the differential amplifier circuit; The differential amplifier circuit is used to amplify the voltage difference between the first positive voltage and the second positive voltage to obtain an amplified positive voltage drop at a first connection position, and is used to output the amplified positive voltage drop to the controller, wherein the first connection position is a connection position between the positive power supply terminal and the positive wire; The controller is used to determine whether the connection state between the positive power supply terminal and the positive wire is an abnormal state, and the abnormal state includes that the amplified positive voltage drop is greater than or equal to a fourth threshold.

15. The communication device according to claim 14, characterized in that The control unit also includes a current detection circuit; The current detection circuit is used to detect the current of the positive jack terminal and output the current of the positive jack terminal to the controller; The controller is used to obtain the amplified positive impedance of the first connection position based on the amplified positive voltage drop and the current of the positive jack terminal, and to determine whether the connection state between the positive power supply terminal and the positive wire is an abnormal state, and the abnormal state includes that the amplified positive impedance is greater than or equal to a fifth threshold.

16. The communication device according to any one of claims 13 to 15, characterized in that: The operating parameters further include a first negative voltage of a negative conductor in a power cable and a second negative voltage of the negative power terminal, and the connection state of the power connector further includes a connection state between the negative power terminal and the negative conductor; The first female negative signal terminal is used to receive the first negative voltage from the first male negative signal terminal, and is used to output the first negative voltage to the differential amplifier circuit; The second female negative signal terminal is used to receive the second negative voltage from the second male negative signal terminal, and is used to output the second negative voltage to the differential amplifier circuit; The differential amplifier circuit is used to amplify the voltage difference between the first negative electrode voltage and the second negative electrode voltage to obtain an amplified negative electrode voltage drop at a second connection position, and is used to output the amplified negative electrode voltage drop to the controller, wherein the second connection position is a connection position between the negative power supply terminal and the negative electrode wire; The controller is used to determine whether the connection state between the negative power supply terminal and the negative wire is an abnormal state, and the abnormal state includes that the amplified negative voltage drop is greater than or equal to a sixth threshold.

17. The communication device according to claim 16, characterized in that The control unit also includes a current detection circuit; The current detection circuit is used to detect the current of the negative electrode jack terminal and output the current of the negative electrode jack terminal to the controller; The controller is used to obtain the amplified negative electrode impedance of the second connection position based on the amplified negative electrode voltage drop and the current of the negative electrode jack terminal, and to determine whether the connection state between the negative electrode power supply terminal and the negative electrode wire is an abnormal state, and the abnormal state includes that the amplified negative electrode impedance is greater than or equal to a seventh threshold.

18. The communication device according to any one of claims 9 to 17, characterized in that: The female signal terminal includes a female switch signal terminal, and the male signal terminal includes a male switch signal terminal; wherein the female switch signal terminal is used to connect with the male switch signal terminal; The control unit is used to output a low level signal to the female switch signal terminal after the connection state of the power connector is abnormal; The female switch signal terminal is used to output the low level signal to the male switch signal terminal; The low-level signal is used to control the switch in the power connector to be disconnected, the switch is arranged between the positive power terminal and the positive wire, or the switch is arranged between the negative power terminal and the negative wire.

19. A power distribution device, characterized in that: The power distribution device comprises a power distribution connector and a control unit, wherein the power distribution connector comprises a positive power terminal, a negative power terminal and a sampling unit; the first end of the positive power terminal is used to connect to the positive wire in the power cable, and the first end of the negative power terminal is used to connect to the negative wire in the power cable; The sampling unit is used to detect the operating parameters of the power distribution connector and to output the operating parameters to the control unit; The control unit is used to determine whether the connection state of the power distribution connector is an abnormal state based on the working parameters.

20. The power distribution equipment according to claim 19, characterized in that: The sampling unit comprises a temperature detection element, and the temperature detection element is arranged between a first connection position and a second connection position, the first connection position is the connection position between the positive power supply terminal and the positive wire, and the second connection position is the connection position between the negative power supply terminal and the negative wire; the working parameter is the temperature at the position where the temperature detection element is located; The control unit is used to determine whether the connection state of the power distribution connector is an abnormal state, and the abnormal state includes that the temperature at the location of the temperature detection element is greater than or equal to a first threshold.

21. The power distribution equipment according to claim 19, characterized in that: The sampling unit comprises a first temperature detection element and a second temperature detection element, the first temperature detection element is arranged at a side of a first connection position away from a second connection position, the second temperature detection element is arranged at a side of the second connection position away from the first connection position, the first connection position is a connection position between the positive power supply terminal and the positive wire, and the second connection position is a connection position between the negative power supply terminal and the negative wire; The operating parameters include a first temperature at a location where the first temperature detection element is located and a second temperature at a location where the second temperature detection element is located, and the connection state of the power distribution connector includes at least one of a connection state between the positive power terminal and the positive wire and a connection state between the negative power terminal and the negative wire; The first temperature detection element is used to detect the first temperature and output the first temperature to the control unit; the second temperature detection element is used to detect the second temperature and output the second temperature to the control unit; The control unit is used to determine whether the connection state between the positive power supply terminal and the positive wire is an abnormal state, and the abnormal state includes that the first temperature is greater than or equal to a second threshold value; the control unit is used to determine whether the connection state between the negative power supply terminal and the negative wire is an abnormal state, and the abnormal state includes that the second temperature is greater than or equal to a third threshold value.

22. The power distribution equipment according to claim 19, characterized in that: The sampling unit includes a first positive probe and a second positive probe, a first negative probe and a second negative probe, and the control unit includes a differential amplifier circuit; The first end of the first positive probe is connected to the positive wire, the second end of the first positive probe is connected to the first positive input terminal of the differential amplifier circuit, the first end of the second positive probe is connected to the second end of the positive power supply terminal, and the second end of the second positive probe is connected to the second positive input terminal of the differential amplifier circuit; The first end of the first negative probe is connected to the negative wire, the second end of the first negative probe is connected to the first negative input terminal of the differential amplifier circuit, the first end of the second negative probe is connected to the second end of the negative power supply terminal, and the second end of the second negative probe is connected to the second negative input terminal of the differential amplifier circuit.

23. The power distribution equipment according to claim 22, characterized in that: The operating parameters include a first positive voltage of the positive wire and a second positive voltage of the positive power terminal; the connection state of the power distribution connector includes a connection state between the positive power terminal and the positive wire; the control unit also includes a controller; The first positive electrode probe is used to detect the first positive electrode voltage and to output the first positive electrode voltage to the differential amplifier circuit; the second positive electrode probe is used to detect the second positive electrode voltage and to output the second positive electrode voltage to the differential amplifier circuit; The differential amplifier circuit is used to amplify the voltage difference between the first positive voltage and the second positive voltage to obtain an amplified positive voltage drop at a first connection position, and is used to output the amplified positive voltage drop to the controller, wherein the first connection position is a connection position between the positive power supply terminal and the positive wire; The controller is used to determine whether the connection state between the positive power supply terminal and the positive wire is an abnormal state, and the abnormal state includes that the amplified positive voltage drop is greater than or equal to a fourth threshold.

24. The power distribution equipment according to claim 23, characterized in that: The control unit also includes a current detection circuit; The current detection circuit is used to detect the current of the positive power supply terminal and to output the current of the positive power supply terminal to the controller; The controller is used to obtain the amplified positive impedance of the first connection position based on the amplified positive voltage drop and the current of the positive power supply terminal, and to determine whether the connection state between the positive power supply terminal and the positive wire is an abnormal state, and the abnormal state includes that the amplified positive impedance is greater than or equal to a fifth threshold.

25. The power distribution equipment according to any one of claims 22 to 24, characterized in that: The operating parameters further include a first negative voltage of the negative wire and a second negative voltage of the negative power terminal, and the connection state of the power distribution connector further includes a connection state between the negative power terminal and the negative wire; the control unit further includes a controller; The first cathode probe is used to detect the first cathode voltage and output the first cathode voltage to the differential amplifier circuit; the second cathode probe is used to detect the second cathode voltage and output the second cathode voltage to the differential amplifier circuit; The differential amplifier circuit is used to amplify the voltage difference between the first negative electrode voltage and the second negative electrode voltage to obtain an amplified negative electrode voltage drop at a second connection position, and is used to output the amplified negative electrode voltage drop to the controller, wherein the second connection position is a connection position between the negative power supply terminal and the negative electrode wire; The controller is used to determine whether the connection state between the negative power supply terminal and the negative wire is an abnormal state, and the abnormal state includes that the amplified negative voltage drop is greater than or equal to a sixth threshold.

26. The power distribution equipment according to claim 25, characterized in that: The control unit also includes a current detection circuit; The current detection circuit is used to detect the current of the negative power supply terminal and to output the current of the negative power supply terminal to the controller; The controller is used to obtain the amplified negative electrode impedance of the second connection position based on the amplified negative electrode voltage drop and the current of the negative power supply terminal, and to determine whether the connection state between the negative power supply terminal and the negative wire is an abnormal state, and the abnormal state includes that the amplified negative electrode impedance is greater than or equal to a seventh threshold.

27. The power distribution equipment according to any one of claims 19 to 26, characterized in that: The power distribution connector further includes a positive conductor, a negative conductor and a switch; the third end of the positive power terminal is connected to the first end of the positive conductor, the second end of the positive conductor is used to connect to the positive pole of an external power source, the third end of the negative power terminal is connected to the first end of the negative conductor, and the second end of the negative conductor is used to connect to the negative pole of the external power source; the switch is arranged between the third end of the positive power terminal and the first end of the positive conductor, or the switch is arranged between the third end of the negative power terminal and the first end of the negative conductor; The control unit is further configured to control the switch to be disconnected after the connection state of the power distribution connector is abnormal.

28. A wireless communication system, characterized in that: The wireless communication system comprises the power connector according to any one of claims 1 to 9 and the communication device according to any one of claims 10 to 18.

29. The wireless communication system according to claim 28, characterized in that: The wireless communication system further comprises a power distribution device as claimed in any one of claims 19 to 27; The power distribution device is used to supply power to the communication device through the power connector.

30. A wireless communication system, characterized in that: The wireless communication system comprises a communication device, a power connector and a power distribution device as described in any one of claims 19 to 27, wherein the power distribution device is used to supply power to the communication device through the power connector.

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