Power connector, communication device, power distribution device, and wireless communication system

Abstract

The present application provides a power connector, a communication device, a power distribution device, and a wireless communication system. The power connector comprises a positive power terminal, a negative power terminal, a male signal terminal, and a sampling unit. The sampling unit is used for detecting a working parameter of the power connector and outputting the working parameter to the male signal terminal. Further, the male signal terminal is used for outputting the working parameter to a female signal terminal, wherein the working parameter is used for determining whether a connection state of the power connector is an abnormal state. The connection state of the power connector comprises at least one of a state of connection between the positive power terminal and a positive wire and a state of connection between the negative power terminal and a negative wire. In the present application, whether a connection state of a power connector is an abnormal state is identified in advance by detecting a working parameter of the power connector, thereby avoiding the heating carbonization of the power connector, improving the reliability of the power connector.

Description

Power connectors, communication equipment, power distribution equipment and wireless communication systems

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on June 30, 2023, with application number 202310804522.6, and priority to the Chinese patent application entitled “Power connector, communication equipment, power distribution equipment and wireless communication system”, all contents of which are incorporated by reference into this application. Technical Field

[0002] 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

[0003] Due to the complex deployment environment of base station equipment and the varying lengths of power cables used to power base station equipment, on-site wiring is often used to connect the power cables to connectors, thereby providing power to the base station equipment.

[0004] Currently, construction workers use methods such as cold-pressed terminals, screw crimping, spring clamping, and wire-stripping-free crimping to connect the positive conductor of the power cord to the positive terminal of the connector, and the negative conductor of the power cord to the negative terminal of the connector, thereby achieving a connection between the power cord and the connector. However, poor wiring by construction workers can lead to 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 a problem that needs to be solved.

[0005] Summary of the Invention

[0006] The present application provides a power connector, communication equipment, power distribution equipment and wireless communication system, which can identify in advance whether the connection status 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.

[0007] In a first aspect, the present application provides a power connector comprising 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 configured to connect to the positive conductor of a power cable, the first end of the negative power terminal is configured to connect to the negative conductor of the power cable, the sampling unit is configured to connect to the first end of the male signal terminal, and the second end of the male signal terminal is configured to connect to the female signal terminal of a device connector, which can be a device connector of 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. Furthermore, the signal terminals in the male signal terminal correspond one-to-one with the signal terminals in the female signal terminal. The sampling unit is configured to detect operating parameters of the power connector and output the operating parameters to the male signal terminal. Furthermore, the male signal terminal is configured to output the operating parameters to the female signal terminal, where the operating parameters are used to determine whether the connection status of the power connector is abnormal. The connection status of the power connector includes at least one of the connection status between the positive power terminal and the positive conductor, and the connection status between the negative power terminal and the negative conductor. By implementing the embodiments of the present application, the operating parameters of the power connector are detected to identify in advance whether the connection status of the power connector is abnormal, thereby avoiding heating and carbonization of the power connector, thereby improving the reliability of the power connector.

[0008] In combination with the first aspect, in a first possible embodiment, 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 terminal and the positive wire, and the second connection position being the connection position between the negative power terminal and the negative wire. In this case, 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 abnormal, that is, the power connector and the power cable are in poor contact. 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, resulting in an increase in the local temperature near at least one of the first connection position and the second connection position, by detecting the temperature at the location of the temperature detection element, it is possible to identify in advance whether the power connector and the power cable are in poor contact, thereby achieving the most accurate detection feedback effect, thereby improving the reliability of the power connector and reducing the cost.

[0009] In combination with the first aspect, in a second possible embodiment, the sampling unit includes a first temperature detection element and a second temperature detection element. The first temperature detection element can be set on the side of the first connection position away from the second connection position, and the second temperature detection element can be set on the side of the second connection position away from the first 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 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.

[0010] In conjunction with the second possible implementation of the first aspect, in a third possible implementation, the operating parameters include a first temperature at the location of the first temperature detection element and a second temperature at the location of the second temperature detection element, and the connection state of the power connector includes at least one of a connection state between the positive power terminal and the positive conductor, and a connection state between the negative power terminal and the negative conductor. The first temperature detection element is used to detect a first temperature and to output the first temperature through the male positive signal terminal, wherein the first temperature is close to the temperature at the first connection location. The second temperature detection element is used to detect a second temperature and to output a second temperature through the male negative signal terminal, wherein the second temperature is close to the temperature at the second connection location. When the first temperature is greater than or equal to a second threshold value, the connection state between the positive power terminal and the positive conductor is abnormal, i.e., the positive power terminal and the positive conductor are in poor contact. When the second temperature is greater than or equal to a third threshold value, the connection state between the negative power terminal and the negative conductor is abnormal, i.e., the negative power terminal and the negative conductor are in poor contact. When implementing the embodiments of the present application, heat is generated when the power connector and the power cable are in poor contact, thereby causing the local temperature near at least one of the first connection position and the second connection position to rise. 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 making the accuracy of abnormal detection higher.

[0011] In combination with the first aspect, in a fourth possible embodiment, 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 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 to the first female positive signal terminal. The second positive probe can be 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 to 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 to 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 configured to be connected to the second female negative signal terminal.

[0012] In conjunction with the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner, the operating parameters include a first positive voltage of the positive conductor and a second positive voltage of the positive power terminal, and the connection status of the power connector includes the connection status of the positive power terminal and the positive conductor. The first positive probe is used to detect the first positive voltage and 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 output the second positive voltage through the second male positive signal terminal. The first positive voltage and the second positive voltage are used to determine a positive voltage drop at a first connection location, which is the connection location between the positive power terminal and the positive conductor. 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 an 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 a fourth threshold, the connection status between the positive power terminal and the positive conductor is abnormal, i.e., the positive power terminal and the positive conductor are in poor contact. When implementing the embodiments 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, by detecting the first positive voltage and the second positive voltage, it is possible to identify in advance whether the positive power terminal and the positive wire are in poor contact, 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.

[0013] In conjunction with the fourth possible implementation manner of the first aspect or the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner, the operating parameters further include the first negative electrode voltage of the negative conductor and the second negative electrode voltage of the negative power terminal, and the connection status of the power connector further includes the connection status of the negative power terminal and the negative conductor. The first negative electrode probe is used to detect the first negative electrode voltage and output the first negative electrode voltage through the first male negative signal terminal. The second negative electrode probe is used to detect the second negative electrode voltage and output the second negative electrode voltage through the second male negative signal terminal. The first negative electrode voltage and the second negative electrode voltage are used to determine the negative electrode voltage drop at the second connection location, which is the connection location between the negative power terminal and the negative conductor. The negative electrode voltage drop can be the voltage difference between the first negative electrode voltage and the second negative electrode voltage, or the negative electrode voltage drop can be an amplified negative electrode voltage drop obtained by amplifying the voltage difference between the first negative electrode voltage and the second negative electrode voltage. When the negative electrode voltage drop is greater than or equal to a fifth threshold, the connection status between the negative power terminal and the negative conductor is abnormal, i.e., the negative power terminal and the negative conductor are in poor contact. In implementing the embodiments 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.

[0014] 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 conductor, or the switch can also be arranged between the first end of the negative power terminal and the negative conductor. Furthermore, 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 prevent the temperature of the first connection position and the temperature of the second connection position from further increasing, thereby ensuring that the power connector will not further heat up and carbonize, and has higher safety.

[0015] In a second aspect, the present application provides a communications device comprising a device connector and a control unit. The device connector includes a positive receptacle terminal, a negative receptacle terminal, and a female signal terminal. The positive receptacle terminal is configured to mate with the positive power terminal of a power connector, and the negative receptacle terminal is configured to mate with the negative power terminal of the power connector. The number of signal terminals within the female signal terminal may be one or more, and the number of signal terminals within the male signal terminal may be one or more. Furthermore, the signal terminals within the female signal terminal correspond one-to-one with the signal terminals within the male signal terminal. The female signal terminal is configured to receive operating parameters of the power connector from the male signal terminal of the power connector and output the operating parameters to the control unit. The operating parameters may be temperature or voltage, and are detected by a sampling unit within the power connector. Furthermore, the control unit is configured to determine whether the connection status of the power connector is abnormal based on the operating parameters. The connection status of the power connector includes at least one of the connection status between the positive power terminal and the positive conductor of a power cable, and the connection status between the negative power terminal and the negative conductor of 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 and carbonizing or even burning the communication equipment, thereby improving the safety of the communication equipment.

[0016] 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 between the temperature of the first connection position and the temperature of the second connection position. The first connection position is the connection position between the positive power terminal and the positive conductor in the power cable, and the second connection position is the connection position between the negative power terminal and the negative conductor 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, 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 equipment.

[0017] In conjunction with the second aspect, in a second possible embodiment, 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 configured to connect to the male positive signal terminal, and the female negative signal terminal is configured to connect to the male negative signal terminal. The operating parameter includes a first temperature at any location on a side of a first connection position facing away from a second connection position, the first temperature being close to the temperature at the first connection position. The first connection position is the connection between the positive power terminal and the positive conductor of the power cable, and the second connection position is the connection between the negative power terminal and the negative conductor of the power cable. The connection status of the power connector includes the connection status of the positive power terminal and the positive conductor. The female positive signal terminal is configured to receive the first temperature from the male positive signal terminal and output the first temperature to a control unit. Furthermore, the control unit is configured to determine whether the connection status between the positive power terminal and the positive conductor is abnormal, where the abnormal status includes the first temperature being greater than or equal to a second threshold, indicating poor contact between the positive power terminal and the positive conductor. In the implementation of 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 communication equipment.

[0018] In conjunction with the second possible implementation of the second aspect, in a third possible implementation, the operating parameters further include a second temperature at any location on a side of the second connection location facing away from the first connection location, and the connection status of the power connector further includes the connection status of the negative power terminal and the negative conductor. The female negative signal terminal is configured to receive the second temperature from the male negative signal terminal and output the second temperature to the control unit, where the second temperature is close to the temperature of the second connection location. Furthermore, the control unit is configured to determine whether the connection status of the negative power terminal and the negative conductor is abnormal, where the abnormal status includes the second temperature being greater than or equal to a third threshold, indicating poor contact between the negative power terminal and the negative conductor. In implementing this embodiment of the present application, since poor contact between the negative power terminal and the negative conductor can cause a local temperature increase near the second connection location, detecting whether the connection status of the negative power terminal and the negative conductor is abnormal based on the second temperature can improve the accuracy of abnormality detection on the negative side, thereby enhancing the safety of the communication device. Furthermore, the detection of abnormalities on both the positive and negative sides can be considered simultaneously, making the detection method more flexible and comprehensive.

[0019] 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, 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, 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.

[0020] 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 set separately. In this case, the differential amplifier circuit can be set inside or outside the control unit. When the differential amplifier circuit is set 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 location 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 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 to output the second positive voltage to the differential amplifier circuit. Furthermore, the differential amplifier circuit is configured 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 location, and to output the amplified positive voltage drop to the controller. The first connection location is the connection location between the positive power terminal and the positive lead. The voltage difference between the first positive voltage and the second positive voltage is the positive voltage drop at the first connection location. Furthermore, the controller is configured to determine whether the connection between the positive power terminal and the positive lead is abnormal. The abnormal state includes the amplified positive voltage drop being greater than or equal to a fourth threshold, indicating poor contact between the positive power terminal and the positive lead.

[0021] In implementing the embodiments 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 status between the positive power terminal and the positive wire is abnormal, which can improve the accuracy and speed of abnormality detection on the positive side and improve the safety of communication equipment.

[0022] In conjunction 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 may be provided separately. In this case, the current detection circuit may be provided internally or externally to the control unit. Optionally, the current detection circuit may be integrated within the controller, and the specific location of the current detection circuit is not limited herein. The current detection circuit is configured to detect the current at the positive jack terminal and output the current at the positive jack terminal to the controller. Because the current magnitude remains substantially constant during the process of the positive wire outputting current to the positive jack terminal through the positive power terminal, the current at the positive jack terminal is the same as the current at the first connection location. Furthermore, the controller is configured to obtain an amplified positive impedance at the first connection location based on the amplified positive voltage drop and the current at the positive jack terminal, and to determine whether the connection between the positive power terminal and the positive wire is abnormal. The abnormal state includes when the amplified positive impedance is greater than or equal to a fifth threshold, indicating poor contact between the positive power terminal and 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 status 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 communication equipment.

[0023] In combination with any one of the fourth possible implementation manner of the second aspect to the sixth possible implementation manner of the second aspect, in a seventh possible implementation manner, the operating parameters further 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 further includes the connection state of the negative power terminal and the negative conductor. The first female negative signal terminal is configured to receive a first negative voltage from the first male negative signal terminal and to output the first negative voltage to the differential amplifier circuit. The second female negative signal terminal is configured to receive a second negative voltage from the second male negative signal terminal and to output the second negative voltage to the differential amplifier circuit. Furthermore, the differential amplifier circuit is configured 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 location, and to output the amplified negative voltage drop to the controller, where the second connection location is the connection location between the negative power terminal and the negative conductor. The voltage difference between the first negative voltage and the second negative voltage is the negative voltage drop at the second connection location. Furthermore, the controller is used to determine whether the connection state between the negative power terminal and the negative wire is abnormal, 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.

[0024] In the implementation of the present application, when the negative power terminal and the negative lead are in poor contact, the negative voltage drop at the second connection location increases, but the value is small. Therefore, after the differential amplifier circuit amplifies the negative voltage drop, it can better detect the change process of the negative voltage drop. Without waiting for heat accumulation at the second connection location, it can quickly identify whether the connection state between the negative power terminal and the negative lead is abnormal. This can improve the accuracy and speed of abnormality detection on the negative side, thereby improving the safety of communication equipment. Furthermore, it can simultaneously take into account abnormality detection on both the positive and negative sides, making the detection method more flexible and comprehensive.

[0025] Optionally, in some feasible embodiments, if the controller can directly detect the changes in the positive and negative voltage drops, the differential amplifier circuit may not be provided in the control unit. In this case, the controller can compare the positive voltage drop with a preset positive voltage drop threshold to determine whether the connection between the positive power supply terminal and the positive lead is abnormal, and compare the negative voltage drop with a preset negative voltage drop threshold to determine whether the connection between the negative power supply terminal and the negative lead is abnormal. 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.

[0026] 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 to output the current of the negative jack terminal to the controller. Since the current magnitude remains substantially unchanged during the process of the negative wire outputting 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 to determine whether the connection state between the negative power terminal and the negative wire is an abnormal state, wherein the abnormal state includes the amplified negative impedance being greater than or equal to the seventh threshold value, and at this time, the negative power terminal and the negative wire are in poor contact. When implementing the embodiments of the present application, the negative impedance at the second connection location increases but is relatively small when the negative power terminal is connected to the negative conductor. Therefore, by obtaining the amplified negative impedance based on the amplified negative voltage drop and the current of the negative jack terminal, the negative impedance change process can be better detected. This eliminates the need to wait for heat accumulation at the second connection location, allowing for rapid identification of abnormal connection status between the negative power terminal and the negative conductor. This improves the accuracy and speed of negative-side abnormality detection, thereby enhancing the safety of communication equipment. Furthermore, the system can simultaneously detect abnormalities on both the positive and negative sides, making the detection method more flexible and comprehensive.

[0027] Optionally, in some feasible embodiments, when the controller can directly detect the change process of the negative electrode voltage drop, the differential amplifier circuit may not be provided in the control unit. In this case, the controller is used to obtain the positive electrode impedance of the first connection position based on the positive electrode voltage drop and the current of the positive electrode jack terminal, and to compare the positive electrode impedance with a preset positive electrode impedance threshold to determine whether the connection state between the positive power supply terminal and the positive electrode wire is abnormal. The preset positive electrode impedance threshold is less than the fifth threshold. The controller is also used to obtain the negative electrode impedance of the second connection position based on the negative electrode voltage drop and the current of the negative electrode jack terminal 501, and to compare the negative electrode impedance with a preset negative electrode impedance threshold to determine whether the connection state between the negative power supply terminal and the negative electrode wire is abnormal. The preset negative electrode impedance threshold is less than the seventh threshold.

[0028] 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 set between the positive power terminal and the positive conductor, or the switch is set between the negative power terminal and the negative conductor. 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.

[0029] In a third aspect, the present application provides a power distribution device, which includes a power distribution connector and a control unit, wherein the power distribution connector includes 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 conductor in the power cable, and the first end of the negative power terminal is used to connect to the negative conductor 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. Furthermore, the control unit is used to determine whether the connection state of the distribution connector is an abnormal state based on the working parameters. The connection state of the distribution connector includes at least one of the connection state between the positive power terminal and the positive conductor, and the connection state between the negative power terminal and the negative conductor. 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 power distribution equipment, thereby improving the reliability of the distribution connector and further improving the power supply safety of the power distribution equipment.

[0030] In conjunction with the third aspect, in a first possible embodiment, 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 the connection position between the positive power terminal and the positive conductor, and the second connection position is the connection position between the negative power terminal and the negative conductor. The above-mentioned operating 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 the temperature at the position where the temperature detection element is located being greater than or equal to a first threshold value, at which time the distribution connector and the power cable are in poor contact. When implementing the embodiment of the present application, since poor contact between the distribution connector and the power cable will cause a local temperature increase near at least one of the first connection position and the second connection position, by detecting the temperature at the position where the temperature detection element is located, whether the distribution connector and the power cable are in poor contact can be identified in advance, which can achieve the most accurate detection feedback effect and lower cost.

[0031] In conjunction 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 may be located on a side of the first connection location facing away from the second connection location, and the second temperature detection element may be located on a side of the second connection location facing away from the first connection location. The first connection location is the connection location between the positive power terminal and the positive conductor, and the second connection location is the connection location between the negative power terminal and the negative conductor. The operating parameters include a first temperature at the location of the first temperature detection element and a second temperature at the location of the second temperature detection element. The connection status of the power distribution connector includes at least one of the connection status between the positive power terminal and the positive conductor, and the connection status between the negative power terminal and the negative conductor. The first temperature detection element is configured to detect a first temperature and output the first temperature to the control unit, the first temperature being close to the temperature at the first connection location. The second temperature detection element is configured to detect a second temperature and output the second temperature to the control unit, the second temperature being close to the temperature at the second connection location. Furthermore, the control unit is configured to determine whether the connection status between the positive power terminal and the positive conductor is abnormal. The abnormal status includes when the first temperature is greater than or equal to a second threshold, indicating poor contact between the positive power terminal and the positive conductor. The control unit is used to determine whether the connection state between the negative power terminal and the negative wire is abnormal, where the second temperature is greater than or equal to a third threshold, and the negative power terminal and the negative wire are in poor contact.

[0032] In the implementation of the embodiment 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 and the positive wire are in poor contact, and the second connection position will cause a local temperature increase near the second connection position when the negative power terminal and the negative wire are in poor contact, 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.

[0033] In conjunction 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 lead, 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 lead, 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.

[0034] In conjunction with the third possible implementation of the third aspect, in a fourth possible implementation, the operating parameters include a first positive voltage of the positive conductor and a second positive voltage of the positive power terminal, and the connection state of the power distribution connector includes the connection state between the positive power terminal and the positive conductor. The control unit also includes a controller, wherein the differential amplifier circuit and the controller can be separately provided. In this case, the differential amplifier circuit can be provided inside or outside the control unit. When the differential amplifier circuit is provided outside the control unit, the controller is the control unit. Optionally, the differential amplifier circuit can also be integrated within the controller, and the specific location of the differential amplifier circuit is not limited herein. The first positive probe is used to detect the first positive voltage and output the first positive voltage to the differential amplifier circuit. The second positive probe is used to detect the second positive voltage and output the second positive voltage to the differential amplifier circuit. Furthermore, 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 location, where the first connection location is the connection location between the positive power terminal and the positive conductor, and output the amplified positive voltage drop to the controller. 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. Furthermore, the controller is configured to determine whether a connection state between the positive power terminal and the positive lead is abnormal, where the abnormal state includes an amplified positive electrode voltage drop greater than or equal to a fourth threshold, indicating poor contact between the positive power terminal and the positive lead.

[0035] In implementing the embodiments 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 status of the positive power terminal and the positive wire is abnormal, which can improve the accuracy and speed of abnormality detection on the positive side and provide higher safety.

[0036] 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 provided separately, in which 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 power supply terminal and to output the current of the positive power supply terminal to the controller. The current of the positive power supply terminal is the same as the current of the first connection position. Furthermore, 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, wherein the abnormal state includes the amplified positive impedance being greater than or equal to a fifth threshold value, in which case the positive power supply terminal and the positive wire are in poor contact. 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 status between the positive power terminal and the positive wire is abnormal, thereby improving the accuracy and speed of abnormality detection on the positive side and increasing safety.

[0037] In combination with any one of the third possible implementation manner of the third aspect to the fifth possible implementation manner of the third aspect, in a sixth possible implementation manner, the above-mentioned operating parameters also include the first negative pole voltage of the negative conductor and the second negative pole voltage of the negative power supply terminal, and the connection state of the power distribution connector also includes the connection state of the negative power supply terminal and the negative conductor. The control unit also includes a controller. The first negative pole probe is used to detect the first negative pole voltage and to output the first negative pole voltage to the differential amplifier circuit. The second negative pole probe is used to detect the second negative pole voltage and to output the second negative pole voltage to the differential amplifier circuit. Furthermore, the differential amplifier circuit is used to amplify the voltage difference between the first negative pole voltage and the second negative pole voltage to obtain an amplified negative pole voltage drop at a second connection position, and to output the amplified negative pole voltage drop to the controller, where the second connection position is the connection position between the negative power supply terminal and the negative conductor. The voltage difference between the first negative pole voltage and the second negative pole voltage is the negative pole 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 abnormal, 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.

[0038] In the implementation of the present application, when the negative power terminal and the negative lead are in poor contact, the negative voltage drop at the second connection location increases, but the value is small. Therefore, after the differential amplifier circuit amplifies the negative voltage drop, it can better detect the change process of the negative voltage drop. Without waiting for heat accumulation at the second connection location, it can quickly identify whether the connection state between the negative power terminal and the negative lead is abnormal. This can improve the accuracy and speed of abnormality detection on the negative side, and provide higher safety. Furthermore, it can simultaneously take into account abnormality detection on both the positive and negative sides, making the detection method more flexible and comprehensive.

[0039] Optionally, in some feasible embodiments, if the controller can directly detect the changes in the positive and negative voltage drops, the differential amplifier circuit may not be provided within the control unit. In this case, the controller may directly compare the positive voltage drop with a preset positive voltage drop threshold to determine whether the connection between the positive power terminal and the positive lead is abnormal. The preset positive voltage drop threshold is less than the fourth threshold. The controller may also directly compare the negative voltage drop with a preset negative voltage drop threshold to determine whether the connection between the negative power terminal and the negative lead is abnormal. The preset negative voltage drop threshold is less than the sixth threshold.

[0040] In conjunction 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 configured to detect the current at the negative power terminal and output the current at the negative power terminal to the controller. The current at the negative power terminal is the same as the current at the second connection location. Furthermore, the controller is configured to obtain an amplified negative impedance at the second connection location based on the amplified negative voltage drop and the current at the negative power terminal, and to determine whether the connection between the negative power terminal and the negative lead is abnormal. The abnormal condition includes the amplified negative impedance being greater than or equal to a seventh threshold, indicating poor contact between the negative power terminal and the negative lead. In implementing this embodiment of the present application, since the negative impedance at the second connection location increases but is relatively small when the negative power terminal is connected to the negative lead, obtaining the amplified negative impedance based on the amplified negative voltage drop and the current at the negative power terminal can better detect changes in the negative impedance. This eliminates the need to wait for heat accumulation at the second connection location, allowing for rapid identification of abnormal connection between the negative power terminal and the negative lead. This improves the accuracy and speed of abnormality detection on the negative side, resulting in greater safety. Moreover, the abnormality detection on the positive side and the abnormality detection on the negative side can be taken into account at the same time, and the detection method is more flexible and comprehensive.

[0041] Optionally, in some feasible embodiments, if the controller can directly detect the change in the negative electrode voltage drop, the differential amplifier circuit may not be provided in the control unit. In this case, the controller is configured to obtain the positive electrode impedance at the first connection position based on the positive electrode voltage drop and the current of the positive power supply terminal, and to compare the positive electrode impedance with a preset positive electrode impedance threshold to determine whether the connection state between the positive power supply terminal and the positive conductor is abnormal. The preset positive electrode impedance threshold is less than the fifth threshold. The controller is also configured to obtain the negative electrode impedance at the second connection position based on the negative electrode voltage drop and the current of the negative power supply terminal, and to compare the negative electrode impedance with a preset negative electrode impedance threshold to determine whether the connection state between the negative power supply terminal and the negative conductor is abnormal. The preset negative electrode impedance threshold is less than the seventh threshold.

[0042] 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 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, and the second end of the positive conductor is used to connect to the positive pole of the external power supply. 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 set between the third end of the positive power terminal and the first end of the positive conductor, or the switch can also be set 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 improving safety.

[0043] In a fourth aspect, the present application provides a wireless communication system, comprising a power connector as provided in any one of the first through seventh possible implementations of the first aspect, and a communication device as provided in any one of the second through ninth possible implementations of the second aspect. It is understood that the communication device can identify in advance whether the connection status of the power connector is abnormal, thereby improving the reliability of the power connector, preventing the power connector from heating and carbonizing, or even burning, the communication device, and thus improving the security of the wireless communication system.

[0044] In conjunction 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 to eighth possible implementations. The power distribution device is configured to supply power to the communication device via a power connector. It is understood that the power distribution device can identify in advance whether the connection status of the internal power distribution connector is abnormal, thereby preventing the power distribution connector from heating and carbonizing, or even burning, the power distribution device. In this case, abnormality detection of both the power distribution connector and the power connector can be simultaneously considered, further improving the security of the wireless communication system.

[0045] In a fifth aspect, the present application provides a wireless communication system, comprising 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 configured to supply power to the communication device via the power connector. It is understood that the power distribution device can identify in advance whether the connection status of the internal power distribution connector is abnormal, thereby preventing the power distribution connector from heating and carbonizing, or even burning the power distribution device, thereby improving the security of the wireless communication system.

[0046] The specific implementation and beneficial effects of the above-mentioned aspects and possible implementation methods of each aspect can be referenced to each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] FIG1 is a schematic diagram of an application scenario of a power connector provided in an embodiment of the present application;

[0048] FIG2 is a structural block diagram of a power connector provided in an embodiment of the present application;

[0049] FIG3 is a schematic structural diagram of a power connector provided in an embodiment of the present application;

[0050] FIG4 is another schematic structural diagram of a power connector provided in an embodiment of the present application;

[0051] FIG5 is another schematic structural diagram of a power connector provided in an embodiment of the present application;

[0052] FIG6 is another schematic structural diagram of a power connector provided in an embodiment of the present application;

[0053] FIG7 is a structural block diagram of a communication device provided in an embodiment of the present application;

[0054] FIG8 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0055] FIG9 is another schematic structural diagram of a communication device provided in an embodiment of the present application;

[0056] FIG10 is another schematic structural diagram of a communication device provided in an embodiment of the present application;

[0057] FIG11 is another schematic structural diagram of a communication device provided in an embodiment of the present application;

[0058] FIG12 is another schematic structural diagram of a communication device provided in an embodiment of the present application;

[0059] FIG13 is a structural block diagram of a power distribution device provided in an embodiment of the present application;

[0060] FIG14 is a schematic structural diagram of a power distribution device provided in an embodiment of the present application;

[0061] FIG15 is another structural diagram of the power distribution equipment provided in an embodiment of the present application;

[0062] FIG16 is another structural diagram of the power distribution equipment provided in an embodiment of the present application;

[0063] FIG17 is another structural diagram of the power distribution equipment provided in an embodiment of the present application;

[0064] FIG18 is a structural block diagram of a wireless communication system provided in an embodiment of the present application;

[0065] Figure 19 is another structural block diagram of the wireless communication system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0066] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0067] The implementation of the technical solution of the present application is further described in detail below with reference to the accompanying drawings.

[0068] Refer to Figure 1, which is a schematic diagram of the application scenario of the power connector provided in an embodiment of the present application. As shown in Figure 1, 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. In the case where 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 DC power or AC power. 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.

[0069] 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 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 status of the power connector 1a is abnormal based on the working parameters, wherein the connection status of the power connector 1a is the connection status between the power connector 1a and the power cable 1c. Furthermore, the control unit 11b is used to output an alarm message to the user interface of the client 1e when the connection status of the power connector 1a is abnormal, that is, when 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 via optical fiber communication. 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.

[0070] By implementing the embodiments of the present application, it is possible to identify in advance whether there is poor contact between the power connector 1a and the power cable 1c, and output an alarm in a timely manner when it is identified that the power connector 1a and the power cable 1c have poor contact, thereby avoiding the power connector 1a from heating and carbonizing or even burning the communication equipment 1b, thereby improving the reliability of the power connector 1a and enhancing system safety.

[0071] 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.

[0072] The power connector and its working principle provided in the embodiment of the present application will be illustrated below with reference to Figures 2 to 6.

[0073] Refer to Figure 2, which is a structural block diagram of the power connector provided in an embodiment of the present application. As shown in Figure 2, 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. Specifically, the sampling unit 23 is connected to the first end of the male signal terminal 22 via 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 one-to-one with the signal terminals in the female signal terminal 40.

[0074] The sampling unit 23 is used to detect operating parameters of the power connector 2 and output the operating parameters to the male signal terminal 22. The operating parameters include at least one of parameters at a location near the first connection point between the positive power terminal 20 and the positive wire 30, and parameters at a location near the second connection point between the negative power terminal 21 and the negative wire 31. Alternatively, the operating parameters include parameters of the positive power terminal 20, parameters of the negative power terminal 21, parameters of the positive wire 30, and parameters of the negative wire 31.

[0075] Furthermore, the male signal terminal 22 is used to output operating parameters to the female signal terminal 40. The operating parameters are used to determine whether the connection state of the power connector 2 is abnormal. 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.

[0076] By implementing the embodiment of the present application, by detecting the working parameters of the power connector 2 to identify in advance whether the connection status of the power connector 2 is abnormal, the power connector 2 can be prevented from heating and carbonizing, thereby improving the reliability of the power connector 2.

[0077] 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 abnormal by detecting the temperature near the above-mentioned connection position in real time.

[0078] In some feasible embodiments, as shown in FIG3 , the sampling unit 23 shown in FIG2 includes a temperature detection element 231, which is disposed 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 may be the male signal terminal 221 shown in FIG3 , and the female signal terminal 40 may be the female signal terminal 401 shown in FIG3 . The temperature detection element 231 is connected to one end of the male signal terminal 221 via 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 disposed 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.

[0079] The temperature detection element 231 is used to detect the temperature at the location of the temperature detection element 231 and to output the temperature at the location of the temperature detection element 231 to the male signal terminal 221. In this case, the operating 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 of these locations. Furthermore, the temperature at the location of the temperature detection element 231 is close to the larger of the temperatures at the first connection location a and the second connection location b.

[0080] Furthermore, the male signal terminal 221 is configured to output the temperature at the location of the temperature detection element 231 to the female signal terminal 401. When the temperature at the location of the temperature detection element 231 is greater than or equal to a first threshold, the connection state of the power connector 2 is abnormal, i.e., the power connector 2 and the power cable 3 are in poor contact.

[0081] 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 at 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.

[0082] In some feasible embodiments, as shown in FIG4 , the sampling unit 23 shown in FIG2 includes a first temperature detection element 232 and a second temperature detection element 233. The first temperature detection element 232 can be set 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 set 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 via 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 via 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. The first temperature detection element 232 and the second temperature detection element 233 are both disposed within the connector housing 24. All terminals in the power connector 2 pass through the connector housing 24 to connect to the device connector 4.

[0083] The first temperature detection element 232 is used to detect a first temperature at the location of the first temperature detection element 232 and output the first temperature via the male positive signal terminal 222. The second temperature detection element 233 is used to detect a second temperature at the location of the second temperature detection element 233 and output the second temperature via the male negative signal terminal 223. In this case, the operating parameters of the power connector 2 include the first temperature and the second temperature.

[0084] The first temperature detection element 232 can be located at any position on the side of the first connection position a facing away from the second connection position b. In this case, the first temperature is the temperature at any position on the side of the first connection position a facing away from the second connection position b. Furthermore, the first temperature is close to the temperature at the first connection position a. The second temperature detection element 233 can be located at any position on the side of the second connection position b facing away from the first connection position a. In this case, the second temperature is the temperature at any position on the side of the second connection position b facing away from the first connection position a. Furthermore, the second temperature is close to the temperature at the second connection position b.

[0085] Furthermore, 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 above-mentioned 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 one possible case, the second threshold and the third threshold are equal, or they may be unequal, which is not limited in this application.

[0086] In implementing 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 a local temperature increase near at least one of the first connection position a and the second connection position b. Therefore, by detecting the first temperature, it is possible 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, it is possible to identify in advance whether the negative power terminal 21 and the negative wire 31 are in poor contact. This can achieve the most accurate detection feedback effect, and can simultaneously take into account abnormal detection on the positive side and abnormal detection on the negative side, further improving the reliability of the power connector 2 and making the abnormal detection more accurate.

[0087] In some feasible embodiments, if the power terminal and the wire are in poor contact, the voltage drop and impedance at the connection point 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 real-time detecting the voltage at the connection point.

[0088] In one specific implementation, as shown in FIG5 , the sampling unit 23 shown in FIG2 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.

[0089] The first positive probe 234 is disposed 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 via a signal line. The second end of the first male positive signal terminal 224 is configured to be connected to the first female positive signal terminal 404. The second positive probe 235 is disposed 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 via a signal line. The second end of the second male positive signal terminal 225 is configured to be connected 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 single component.

[0090] 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 via a signal line. The second end of the first male negative signal terminal 226 is configured to be connected 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 via a signal line. The second end of the second male negative signal terminal 227 is configured to be connected to the second female negative signal terminal 407. The second negative probe 237 and the negative power terminal 21 may be two independent components, or the second negative probe 237 may be reinforced on the negative power terminal 21 to form a single component.

[0091] The power connector 2 further includes a connector housing 24 , wherein the first positive probe 234 , the second positive probe 235 , the first negative probe 236 and the second negative probe 237 are all disposed inside the connector housing 24 , and all terminals in the power connector 2 pass through the connector housing 24 and are connected to the device connector 4 .

[0092] The abnormality detection method on the positive electrode side corresponding to FIG5 will be described below.

[0093] The first positive probe 234 is used to detect the first positive voltage of the positive wire 30 and 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 output the second positive voltage through the second male positive signal terminal 225. In this case, the operating parameters of the power connector 2 include the first positive voltage and the second positive voltage.

[0094] Furthermore, 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 between the positive power terminal 20 and the positive wire 30. The first positive voltage and the second positive voltage are used to determine the positive voltage drop at the first connection position a. Exemplarily, 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 an amplified positive voltage drop obtained by amplifying the voltage difference between the first positive voltage and the second positive voltage.

[0095] 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.

[0096] In 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, by detecting the first positive voltage and the second positive voltage, it is possible to identify in advance whether the positive power terminal 20 and the positive wire 30 are in poor contact, and there is no need to wait for the heat accumulation process at the first connection position a. The abnormality detection speed on the positive side is faster and safer.

[0097] The abnormality detection method on the negative electrode side corresponding to FIG5 will be described below.

[0098] The first negative probe 236 is used to detect the first negative voltage of the negative wire 31 and output the first negative voltage through the first male negative signal terminal 226. The second negative probe 237 is used to detect the second negative voltage of the negative power terminal 21 and output the second negative voltage through the second male negative signal terminal 227. In this case, the operating parameters of the power connector 2 also include the first negative voltage and the second negative voltage.

[0099] Furthermore, 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 between the negative power terminal 21 and the negative wire 31. The first negative voltage and the second negative voltage are used to determine the negative voltage drop at 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 an amplified negative voltage drop obtained by amplifying the voltage difference between the first negative voltage and the second negative voltage.

[0100] 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.

[0101] In the implementation of the embodiment of the present application, since the negative voltage drop at the second connection position b increases when the negative power terminal 21 and the negative wire 31 have poor contact, it is possible to identify in advance whether the negative power terminal 21 and the negative wire 31 have poor contact 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. The abnormality detection speed on the negative side is faster and safer.

[0102] It can be understood that the above-mentioned abnormal detection method on the positive pole side and the abnormal detection method on the negative pole side can be used at the same time. For example, when one of the situations in which the negative pole voltage drop is greater than or equal to the fifth threshold value and the positive pole voltage drop is greater than or equal to the fourth threshold value occurs, or when both situations occur at the same time, it can be determined that the power connector 2 and the power cable 3 have poor contact. The specific requirements can be designed according to actual conditions, and this application is not limited.

[0103] In some feasible embodiments, as shown in FIG6 , the power connector 2 shown in FIG3 further includes a switch 25 . Exemplarily, the switch 25 may 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 disposed between the first end of the positive power terminal 20 and the positive conductor 30 . Optionally, the switch 25 may also be disposed between the first end of the negative power terminal 21 and the negative conductor 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 via a signal line. The second end of the male switch signal terminal 228 is configured to connect to the female switch signal terminal 408 .

[0104] When power cable 3 is connected to an external power source, male switch signal terminal 228 is used to receive a high-level signal from female switch signal terminal 408. This high-level signal is used to control switch 25 to conduct, thereby establishing a current path between the power source and power connector 2, allowing power connector 2 to supply power to the device. After the device corresponding to device connector 4 detects that the connection status of power connector 2 is abnormal, male switch signal terminal 228 is used to receive a low-level signal from female switch signal terminal 408. This low-level signal is used to control switch 25 to disconnect. At this point, no current flows through power connector 2, preventing further temperature increases at the first connection location a and the second connection location b, thereby preventing further heat and carbonization of power connector 2 and providing increased safety. It is understood that a low-level signal can also be configured to control switch 25 to conduct, and this is not limited to this in the present application. In other words, male switch signal terminal 228 is used to receive a signal from female switch signal terminal 408, which can be used to control switch 25 to conduct.

[0105] In some feasible embodiments, the switch 25 and the male switch signal terminal 228 can also be set in the power connector 2 shown in Figure 4 or 5 above, and the female switch signal terminal 408 can also be correspondingly set in the device connector 4 shown in Figure 4 or 5 above.

[0106] In some feasible embodiments, as shown in Figures 3 to 6 above, the device connector 4 further includes a positive receptacle terminal 41 and a negative receptacle terminal 42. The positive power terminal 20 is configured to be plugged into the positive receptacle terminal 41, and the negative power terminal 21 is configured to be plugged into the negative receptacle terminal 42. In this case, the power connector 2 can output power to the device connector 4, thereby operating the device corresponding to the device connector 4.

[0107] In the embodiments corresponding to FIG. 3 to FIG. 6 , any one of the first threshold, the second threshold, the third threshold, the fourth threshold and the fifth threshold may be a preset value or a value determined according to the components used in the power connector 2 .

[0108] The communication device and its working principle provided in the embodiment of the present application will be illustrated below with reference to Figures 7 to 12.

[0109] Refer to Figure 7, which is a structural block diagram of the communication device provided in an embodiment of the present application. As shown in Figure 7, the communication device 5 includes a device connector 50 and a control unit 51. 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 into the positive power terminal 60 in the power connector 6, and the negative jack terminal 501 is used to plug into the negative power terminal 61 in the power connector 6. The first end of the female signal terminal 502 is used to connect to 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 respectively the device connector 4 and the power connector 2 shown in Figure 2 above. At this time, the relevant description of the structure of the female signal terminal 502 and the male signal terminal 62 can refer to the embodiment corresponding to Figure 2, and will not be repeated here.

[0110] The female signal terminal 502 is used to receive the operating parameters of the power connector 6 from the male signal terminal 62 and output the operating parameters to the control unit 51. The operating parameters may be temperature or voltage, and are detected by a sampling unit inside the power connector 6.

[0111] Furthermore, the control unit 51 is configured to determine whether the connection state of the power connector 6 is abnormal based on the operating 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 conductor 70 in the power cable 7, and the connection state between the negative power terminal 61 and the negative conductor 71 in the power cable 7.

[0112] 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, thereby preventing the power connector 6 from heating and carbonizing or even burning the communication device 5, thereby improving the safety of use of the communication device 5.

[0113] 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.

[0114] In some feasible embodiments, as shown in FIG8 , the female signal terminal 502 shown in FIG7 is a female signal terminal 5021, and the male signal terminal 62 is a 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 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 shown in FIG3 . In addition, the temperature of any position is close to the larger temperature between the temperature of the first connection position and the temperature of the second connection position.

[0115] Furthermore, the control unit 51 is configured to determine whether the connection state of the power connector 6 is abnormal. The abnormal state includes when the temperature at any location is greater than or equal to a first threshold, in which case the power connector 6 and the power cable 7 are in poor contact. In other words, the control unit 51 is configured to determine that the power connector 6 and the power cable 7 are in poor contact in response to the temperature at any location being greater than or equal to the first threshold, and is configured to determine that the power connector 6 and the power cable 7 are in good contact in response to the temperature at any location being less than the first threshold.

[0116] 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 abnormal 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.

[0117] In some feasible embodiments, as shown in FIG9 , the female signal terminal 502 shown in FIG7 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 configured to connect to the male positive signal terminal 622. Specifically, the first end of the female positive signal terminal 5022 is configured to connect to the male positive signal terminal 622. The female negative signal terminal 5023 is configured to connect to the male negative signal terminal 623. Specifically, the first end of the female negative signal terminal 5023 is configured to connect to 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 via a signal line.

[0118] The abnormality detection method on the positive electrode side corresponding to FIG9 will be described below.

[0119] 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, where the first temperature is close to the temperature of the first connection position. At this time, the operating 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. Furthermore, 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, where the abnormal state includes a first temperature greater than or equal to a 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.

[0120] When implementing the embodiment of the present application, since poor contact between the positive power terminal 60 and the positive wire 70 will cause the local temperature near the first connection position to rise, detecting whether the connection status 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.

[0121] The following will describe the abnormality detection method on the negative electrode side corresponding to FIG9 .

[0122] The female negative signal terminal 5023 is used to receive a 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 operating parameters of the power connector 6 also include a second temperature at any position on the side of the second connection position away from the first connection position. Furthermore, 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 at this time 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 negative power terminal 61 and the negative wire 71 are in good contact in response to the second temperature being less than the third threshold. Among them, the second threshold and the third threshold can be equal or different, and this application is not limited thereto.

[0123] In the embodiment of the present application, since poor contact between the negative power terminal 61 and the negative lead 71 can cause a local temperature increase near the second connection location, detecting whether the connection between the negative power terminal 61 and the negative lead 71 is abnormal based on the second temperature can improve the accuracy of abnormality detection on the negative side, thereby improving the safety of communication device 5. Furthermore, the detection of abnormalities on both the positive and negative sides can be considered simultaneously, making the detection method more flexible and comprehensive.

[0124] In the embodiment corresponding to FIG. 9 , the first temperature and the second temperature may be detected by a sampling unit in the power connector 6 . For example, the specific structure of the sampling unit is shown in FIG. 4 .

[0125] In some feasible embodiments, as shown in FIG10 , the female signal terminal 502 shown in FIG7 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. The male signal terminal 62 shown in FIG7 includes a first male positive signal terminal 624, 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 can be a processing chip within the communication device 5. The differential amplifier circuit 510 and the controller 511 can be separately provided. In this case, the differential amplifier circuit 510 can 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 serves as the control unit 51. Optionally, the differential amplifier circuit 510 may also be integrated into the controller 511 , and the specific location of the differential amplifier circuit 510 is not limited here.

[0126] 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 via 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 via a signal line.

[0127] The first end of the first female negative signal terminal 5026 is connected 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 via a signal line. The first end of the second female negative signal terminal 5027 is connected 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 via a signal line. The output of the differential amplifier circuit 510 is connected to the controller 511 via a signal line.

[0128] The abnormality detection method on the positive electrode side corresponding to FIG10 will be described below.

[0129] 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. In this case, the operating parameters of the power connector 6 include the first positive voltage and the second positive voltage.

[0130] Furthermore, the differential amplifier circuit 510 is configured 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, and to output the amplified positive electrode voltage drop to the controller 511. 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.

[0131] Furthermore, the controller 511 is configured to determine whether the connection between the positive power terminal 60 and the positive lead 70 is abnormal. The abnormal state includes when the amplified positive voltage drop is greater than or equal to a fourth threshold, indicating poor contact between the positive power terminal 60 and the positive lead 70. In other words, the controller 511 is configured to determine that the positive power terminal 60 and the positive lead 70 are in poor contact in response to the amplified positive voltage drop being greater than or equal to the fourth threshold, and to determine that the positive power terminal 60 and the positive lead 70 are in good contact in response to the amplified positive voltage drop being less than the fourth threshold.

[0132] 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 abnormality detection on the positive side and improve the safety of use of the communication equipment 5.

[0133] The abnormality detection method on the negative electrode side corresponding to FIG. 10 will be described below.

[0134] The first female negative signal terminal 5026 is used to receive the first negative voltage of the negative conductor 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. In this case, the operating parameters of the power connector 6 also include the first negative voltage and the second negative voltage.

[0135] Furthermore, the differential amplifier circuit 510 is configured 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.

[0136] Furthermore, the controller 511 is configured to determine whether the connection between the negative power terminal 61 and the negative lead 71 is abnormal. The abnormal state includes when the amplified negative voltage drop is greater than or equal to a sixth threshold, indicating poor contact between the negative power terminal 61 and the negative lead 71. In other words, the controller 511 is configured to determine that the negative power terminal 61 and the negative lead 71 are in poor contact in response to the amplified negative voltage drop being greater than or equal to the sixth threshold, and to determine that the negative power terminal 61 and the negative lead 71 are in good contact in response to the amplified negative voltage drop being less than the sixth threshold.

[0137] In the implementation of the present application, when the negative power terminal 61 and the negative lead 71 are in poor contact, the negative voltage drop at the second connection location increases, but the value is small. Therefore, after the differential amplifier circuit 510 amplifies the negative voltage drop, it can better detect the change process of the negative voltage drop. Without waiting for the heat accumulation process at the second connection location, it can quickly identify whether the connection state between the negative power terminal 61 and the negative lead 71 is abnormal. This can improve the accuracy and speed of abnormality detection on the negative side, thereby improving the safety of communication device 5. In addition, it can simultaneously take into account abnormality detection on both the positive and negative sides, making the detection method more flexible and comprehensive.

[0138] In the embodiment corresponding to FIG10 , 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 shown in FIG5 .

[0139] Optionally, in some feasible embodiments, when the controller 511 can directly detect the changes in the positive and negative voltage drops, the differential amplifier circuit 510 may not be provided in the control unit 51. In this case, the controller 511 can compare the positive voltage drop with a preset positive voltage drop threshold to determine whether the connection state between the positive power supply terminal 60 and the positive lead 70 is abnormal, and compare the negative voltage drop with a preset negative voltage drop threshold to determine whether the connection state between the negative power supply terminal 61 and the negative lead 71 is abnormal. For specific implementation, please refer to the corresponding abnormality detection methods on the positive and negative sides of FIG10 , which will not be described in detail here. 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.

[0140] In some feasible embodiments, as shown in FIG11 , the control unit 51 shown in FIG10 may further include a current detection circuit 512. The current detection circuit 512 and the controller 511 may be provided separately. In this case, the current detection circuit 512 may be provided inside or outside the control unit 51. Alternatively, the current detection circuit 512 may be integrated inside the controller 511, and the specific location of the current detection circuit 512 is not limited herein.

[0141] The abnormality detection method on the positive electrode side corresponding to FIG11 will be described below.

[0142] The current detection circuit 512 is used to detect the current in the positive jack terminal 500 and output the current in the positive jack terminal 500 to the controller 511. Since the current magnitude remains substantially constant 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 in the positive jack terminal 500 is the same as the current in the first connection position.

[0143] Furthermore, the controller 511 is configured to obtain an amplified positive impedance at the first connection location based on the amplified positive voltage drop and the current of the positive jack terminal 500, and to determine whether the connection between the positive power terminal 60 and the positive lead 70 is abnormal. The abnormal state includes when the amplified positive impedance is greater than or equal to a fifth threshold, indicating that the positive power terminal 60 and the positive lead 70 are in poor contact. In other words, the controller 511 is configured to determine that the positive power terminal 60 and the positive lead 70 are in poor contact in response to the amplified positive impedance being greater than or equal to the fifth threshold, and to determine that the positive power terminal 60 and the positive lead 70 are in good contact in response to the amplified positive impedance being less than the fifth threshold.

[0144] When implementing 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, thereby quickly identifying 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 abnormality detection on the positive side and improving the safety of use of the communication equipment 5.

[0145] The following will describe the abnormality detection method on the negative electrode side corresponding to FIG11 .

[0146] The current detection circuit 512 is used to detect the current in the negative jack terminal 501 and output the current in 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 terminal 61, the current in the negative jack terminal 501 is the same as the current in the second connection position.

[0147] Furthermore, the controller 511 is configured to obtain an amplified negative impedance at the second connection location based on the amplified negative voltage drop and the current of the negative jack terminal 501, and to determine whether the connection between the negative power terminal 61 and the negative lead 71 is abnormal. The abnormal state includes when the amplified negative impedance is greater than or equal to a seventh threshold, indicating poor contact between the negative power terminal 61 and the negative lead 71. In other words, the controller 511 is configured to determine that the negative power terminal 61 and the negative lead 71 are in poor contact in response to the amplified negative impedance being greater than or equal to the seventh threshold, and to determine that the negative power terminal 61 and the negative lead 71 are in good contact in response to the amplified negative impedance being less than the seventh threshold.

[0148] In the implementation of the present application, since the negative impedance at the second connection location of the negative power terminal 61 and the negative lead 71 increases but at a relatively small value, the amplified negative impedance obtained by amplifying the negative voltage drop and the current of the negative jack terminal 501 can better detect the change in the negative impedance, without having to wait for heat accumulation at the second connection location. This allows for rapid identification of whether the connection between the negative power terminal 61 and the negative lead 71 is abnormal, improving the accuracy and speed of negative side anomaly detection and thus enhancing the safety of communication device 5. Furthermore, the detection of both positive and negative side anomalies can be considered simultaneously, making the detection method more flexible and comprehensive.

[0149] Optionally, in some feasible embodiments, if the controller 511 can directly detect the change in the negative electrode voltage drop, the differential amplifier circuit 510 may not be provided within the control unit 51. In this case, the controller 511 is configured to obtain the positive electrode impedance at the first connection location based on the positive electrode voltage drop and the current flowing through the positive electrode jack terminal 500, and to compare the positive electrode impedance with a preset positive electrode impedance threshold to determine whether the connection between the positive power supply terminal 60 and the positive electrode conductor 70 is abnormal. For a specific implementation, see the abnormality detection method for the positive electrode side corresponding to FIG11 , which will not be described in detail here. The preset positive electrode impedance threshold is less than the fifth threshold. The controller 511 is also configured to obtain the negative electrode impedance at the second connection location based on the negative electrode voltage drop and the current flowing through the negative electrode jack terminal 501, and to compare the negative electrode impedance with a preset negative electrode impedance threshold to determine whether the connection between the negative power supply terminal 61 and the negative electrode conductor 71 is abnormal. For a specific implementation, see the abnormality detection method for the negative electrode side corresponding to FIG11 , which will not be described in detail here. The preset negative electrode impedance threshold is less than the seventh threshold.

[0150] In some feasible embodiments, as shown in FIG12 , the female signal terminal 502 shown in FIG7 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 configured to connect to the male switch signal terminal 628. Exemplarily, a first end of the female switch signal terminal 5028 is configured to connect to the male switch signal terminal 628, and a second end of the female switch signal terminal 5028 is connected to the control unit 51 via a signal line.

[0151] When an external power source is supplying power to the communication device 5, the control unit 51 is configured to output a high-level signal to the female switch signal terminal 5028. Furthermore, the female switch signal terminal 5028 is configured 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 conduct, thereby enabling the external power source to supply 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 configured to output a low-level signal to the female switch signal terminal 5028 upon identifying that the connection status of the power connector 6 is abnormal. Exemplarily, after the connection status of the power connector 6 is abnormal, the temperature of at least one of the first connection position and the second connection position continues to rise. In this case, the control unit 51 is configured to output a low-level signal to the female switch signal terminal 5028 in response to the temperature of any position between the first and second connection positions, or any one of the first and second temperatures being greater than or equal to a preset temperature threshold. The preset temperature threshold is greater than any one of the first, second, and third thresholds. It can be understood that the power connector 6 in FIG12 can refer to the description of the power connector 2 in FIG6 . Specifically, the technical solutions related to the switch 63 can refer to the description related to the switch 25 in FIG6 .

[0152] Furthermore, 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 set between the positive power terminal 60 and the positive wire 70, or the switch 63 is set 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 above, 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.

[0153] Optionally, in some feasible implementations, the control unit 51 is configured to control the communication device 5 to reduce power consumption after the connection status of the power connector 6 is abnormal. Exemplarily, the control unit 51 is configured to control the shutdown of some data transmission channels within the communication device 5, thereby reducing power consumption of the communication device 5 and preventing the temperature at the first connection location and the temperature at the second connection location from further increasing, thereby protecting the communication device 5 from burning.

[0154] In some feasible embodiments, the female switch signal terminal 5028 can also be set in the device connector 50 shown in Figure 10 or Figure 11 above, and the switch 63 and the male switch signal terminal 628 can also be correspondingly set in the power connector 6 shown in Figure 10 or Figure 11 above.

[0155] In some feasible embodiments, the control unit 51 or the controller 511 is used to output an alarm message to the user interface in response to the connection status 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 information 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 information is used to instruct the operation and maintenance personnel to repair the power connector 6 so that the connection status 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.

[0156] In the embodiments corresponding to Figures 7 to 12 above, any of the first threshold, the second threshold, the third threshold, the fourth threshold, the fifth threshold, the sixth threshold, the seventh threshold, the preset positive electrode voltage drop threshold, the preset negative electrode voltage drop threshold, the preset positive electrode impedance threshold, the preset negative electrode impedance threshold, and the preset temperature threshold may be a preset value or a value determined based on the components used in the power connector 6. The above thresholds may be arbitrary values, and may be equal or different, and this application does not limit this.

[0157] The power distribution equipment and its working principle provided in the embodiment of the present application will be illustrated below with reference to Figures 13 to 17.

[0158] See Figure 13, which is a block diagram of the structure of the power distribution equipment provided in an embodiment of the present application. As shown in Figure 13, the power distribution equipment 8 includes a power distribution connector 80 and a control unit 81. The power distribution connector 80 includes a positive power terminal 800, a negative power terminal 801, and a sampling unit 802. The first end of the positive power terminal 800 is used to connect to the positive conductor 90 of the power cable 9, and the first end of the negative power terminal 801 is used to connect to the negative conductor 91 of the power cable 9.

[0159] Sampling unit 802 is configured to detect operating parameters of power distribution connector 80 and output these parameters to control unit 81. The operating parameters may be either temperature or voltage. Furthermore, control unit 81 is configured to determine, based on the operating parameters, whether the connection status of power distribution connector 80 is abnormal. The connection status of power distribution connector 80 includes at least one of the connection status between the positive power terminal 800 and the positive conductor 90, and the connection status between the negative power terminal 801 and the negative conductor 91.

[0160] By implementing the embodiments of the present application, by detecting the working parameters of the distribution connector 80 to identify in advance whether the connection status of the distribution connector 80 is abnormal, the distribution connector 80 can be prevented from heating 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.

[0161] 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, the connection state of the distribution connector 80 can be determined to be an abnormal state. The specific requirements can be designed according to actual conditions, and this application is not limited.

[0162] In some feasible embodiments, the power distribution connector 80 and the control unit 81 may be provided separately, or the control unit 81 may be integrated within the power distribution connector 80. The specific location of the control unit 81 is not limited herein. For ease of description, the following description will take the example of the control unit 81 being integrated within the power distribution connector 80.

[0163] In some feasible embodiments, as shown in FIG14 , the sampling unit 802 shown in FIG13 includes a temperature detection element 8021, which is disposed 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 lead 90, and the second connection position d is the connection position between the negative power terminal 801 and the negative lead 91. FIG13 also includes a connector housing 803, in which the positive power terminal 800, the negative power terminal 801, and the temperature detection element 8021 are all disposed. The temperature detection element 8021 is connected to the control unit 81 via a signal line.

[0164] The temperature detection element 8021 is used to detect the temperature at the location of the temperature detection element 8021. In this case, the operating 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 8021 is close to the larger temperature between the temperature at the first connection location c and the temperature at the second connection location d.

[0165] Furthermore, the control unit 81 is configured to determine whether the connection status of the power distribution connector 80 is abnormal, where the abnormal status includes the temperature at the location of the temperature detection element 8021 being greater than or equal to a first threshold, in which case the power distribution connector 80 is in poor contact with the power cable 9. In other words, the control unit 81 is configured 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, and is configured 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.

[0166] When implementing the embodiments 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 in advance to identify 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.

[0167] In some feasible embodiments, as shown in FIG14 , the power distribution connector 80 shown in FIG13 further includes a positive conductor 804, a negative conductor 805, and a switch 806. Exemplarily, the switch 806 may be a relay, a contactor, or a bidirectional switch. 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 terminal of an external power source. Exemplarily, the second end of the positive conductor 804 is used to pass through the connector housing 803 to connect to the positive terminal of the external power source. The positive conductor 804 may also be referred to as the 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 terminal of the external power source. Exemplarily, the second end of the negative conductor 805 is used to pass through the connector housing 803 to connect to the negative terminal of the external power source. The negative conductor 805 may also be referred to as the negative front conductor. The switch 806 may be disposed between the third end of the negative power terminal 801 and the first end of the negative conductor 805. Optionally, the switch 806 may be disposed between the third end of the positive power terminal 800 and the first end of the positive conductor 804, without specific limitation herein. A 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 on / off state of the switch 806.

[0168] When an external power source 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 can be the communication device 5 shown in Figures 7 to 12. 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 be disconnected 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 be disconnected 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.

[0169] 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 improving safety.

[0170] In some feasible embodiments, as shown in FIG15 , the sampling unit 802 shown in FIG13 includes a first temperature detection element 8022 and a second temperature detection element 8023, wherein the first temperature detection element 8022 is disposed on a side of the first connection position c facing away from the second connection position d, and the second temperature detection element 8023 is disposed on a side of the second connection position d facing away from the first connection position c. FIG13 also includes a connector housing 803, wherein 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 disposed within the connector housing 803. The first temperature detection element 8022 is connected to the control unit 51 via a signal line, and the second temperature detection element 8023 is connected to the control unit 51 via a signal line.

[0171] The first temperature detection element 8022 is used to detect a first temperature at the location of the first temperature detection element 8022 and output the first temperature to the control unit 81. The first temperature is close to the temperature at the first connection location c. The second temperature detection element is used to detect a second temperature at the location of the second temperature detection element 8023 and output the second temperature to the control unit 81. The second temperature is close to the temperature at the second connection location d. In this case, the operating parameters of the power distribution connector 80 include the first temperature and the second temperature.

[0172] Furthermore, the control unit 81 is configured to determine whether the connection between the positive power terminal 800 and the positive lead 90 is abnormal. The abnormal state includes when the first temperature is greater than or equal to the second threshold, in which case the positive power terminal 800 and the positive lead 90 are in poor contact. In other words, the control unit 81 is configured to determine that the positive power terminal 800 and the positive lead 90 are in poor contact in response to the first temperature being greater than or equal to the second threshold, and to determine that the positive power terminal 800 and the positive lead 90 are in good contact in response to the first temperature being less than the second threshold.

[0173] The control unit 81 is configured to determine whether the connection between the negative power terminal 801 and the negative lead 91 is abnormal. The abnormal state includes when the second temperature is greater than or equal to a third threshold, indicating poor contact between the negative power terminal 801 and the negative lead 91. In other words, the control unit 81 is configured to determine that the negative power terminal 801 and the negative lead 91 are in poor contact in response to the second temperature being greater than or equal to the third threshold, and to determine that the negative power terminal 801 and the negative lead 91 are in good contact in response to the second temperature being less than the third threshold. The second threshold and the third threshold may be equal or different, and this application does not impose any limitation thereto.

[0174] In implementing the embodiments of the present application, since poor contact between the positive power terminal 800 and the positive wire 90 will cause a local temperature increase near the first connection position c, and poor contact between the negative power terminal 801 and the negative wire 91 will cause a local temperature increase near the second connection position d, 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.

[0175] In some feasible embodiments, as shown in FIG15 , the power distribution connector 80 shown in FIG13 above 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, the switch 806, and other components can be found in the corresponding embodiment of FIG14 , and will not be repeated here. 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 either the first temperature or 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. The second preset temperature threshold is greater than either the second threshold or the third threshold.

[0176] In some feasible embodiments, as shown in FIG16 , the sampling unit 802 shown in FIG13 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 within the power distribution device 8. The differential amplifier circuit 810 and the controller 811 may be provided separately. 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 serves as the control unit 81. Alternatively, the differential amplifier circuit 810 may be integrated within the controller 811. The specific location of the differential amplifier circuit 810 is not limited herein.

[0177] 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 via 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 via a signal line.

[0178] A first end of a first negative probe 8026 is connected to the negative lead 91, and a 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 via a signal line. A first end of a second negative probe 8027 is connected to the second end of the negative power supply terminal 801, and a 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 via a signal line. The output terminal of the differential amplifier circuit 810 is connected to the controller 811 via a signal line.

[0179] 13 also includes a connector housing 803 , in which 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 disposed.

[0180] The abnormality detection method on the positive electrode side corresponding to FIG15 will be described below.

[0181] The first positive probe 8024 is used to detect a first positive voltage on the positive conductor 90 and output the first positive voltage to the differential amplifier circuit 810. The second positive probe 8025 is used to detect a second positive voltage on the positive power supply terminal 800 and output the second positive voltage to the differential amplifier circuit 810. The operating parameters of the power distribution connector 80 include the first positive voltage and the second positive voltage.

[0182] Furthermore, the differential amplifier circuit 810 is configured 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.

[0183] Furthermore, the controller 811 is configured to determine whether the connection between the positive power terminal 800 and the positive lead 90 is abnormal. The abnormal state includes when the amplified positive voltage drop is greater than or equal to a fourth threshold, indicating poor contact between the positive power terminal 800 and the positive lead 90. In other words, the controller 811 is configured to determine that the positive power terminal 800 and the positive lead 90 are in poor contact in response to the amplified positive voltage drop being greater than or equal to the fourth threshold, and to determine that the positive power terminal 800 and the positive lead 90 are in good contact in response to the amplified positive voltage drop being less than the fourth threshold.

[0184] 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 abnormal, which can improve the accuracy and speed of abnormality detection on the positive side and provide higher safety.

[0185] The abnormality detection method on the negative electrode side corresponding to FIG15 will be described below.

[0186] The first negative probe 8026 is used to detect the first negative voltage of the negative conductor 91 and 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 output the second negative voltage to the differential amplifier circuit 810. In this case, the operating parameters of the power distribution connector 80 also include the first negative voltage and the second negative voltage. The connection status of the power distribution connector 80 also includes the connection status between the negative power supply terminal 801 and the negative conductor 91.

[0187] Furthermore, the differential amplifier circuit 810 is configured 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.

[0188] Furthermore, the controller 811 is configured to determine whether the connection between the negative power terminal 801 and the negative lead 91 is abnormal. The abnormal state includes when the amplified negative voltage drop is greater than or equal to a sixth threshold, indicating poor contact between the negative power terminal 801 and the negative lead 91. In other words, the controller 811 is configured to determine that the negative power terminal 801 and the negative lead 91 are in poor contact in response to the amplified negative voltage drop being greater than or equal to the sixth threshold, and to determine that the negative power terminal 801 and the negative lead 91 are in good contact in response to the amplified negative voltage drop being less than the sixth threshold.

[0189] In the implementation of the present application, when the negative power terminal 801 and the negative lead 91 are in poor contact, the negative voltage drop at the second connection location d increases, but the value is small. Therefore, after the differential amplifier circuit 810 amplifies the negative voltage drop, it can better detect the change process of the negative voltage drop. Without waiting for the heat accumulation process at the second connection location d, it can quickly identify whether the connection state between the negative power terminal 801 and the negative lead 91 is abnormal. This can improve the accuracy and speed of abnormality detection on the negative side, and provide higher safety. Furthermore, it can simultaneously take into account abnormality detection on both the positive and negative sides, making the detection method more flexible and comprehensive.

[0190] Optionally, in some feasible embodiments, when the controller 811 can directly detect the changes in the positive and negative voltage drops, the differential amplifier circuit 810 may not be provided in the control unit 81. In this case, the controller 811 can compare the positive voltage drop with a preset positive voltage drop threshold to determine whether the connection state between the positive power supply terminal 800 and the positive lead 90 is abnormal, and compare the negative voltage drop with a preset negative voltage drop threshold to determine whether the connection state between the negative power supply terminal 801 and the negative lead 91 is abnormal. For specific implementation, please refer to the abnormality detection method for the positive and negative sides corresponding to FIG15, which will not be repeated here. 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.

[0191] In some feasible embodiments, as shown in FIG. 16 , the power distribution connector 80 shown in FIG. 13 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 of the power distribution connector 80 can be found in the corresponding embodiment of FIG. 14 and is not further described here. After the power distribution connector 80 reaches an abnormal connection state, the voltage drop at at least one of the first connection location c and the second connection location d continues to increase. In this case, the controller 811 is configured to control the switch 806 to open in response to any of the amplified positive voltage drop and the positive voltage drop at the first connection location c, and the amplified negative voltage drop and the negative voltage drop at the second connection location d being greater than or equal to a first preset voltage drop threshold. At this point, no current will flow through the power distribution connector 80, preventing further increases in the voltage drop at the first connection location c and the voltage drop at the second connection location d, thereby increasing the reliability of the power distribution connector 80. The first preset voltage drop threshold is greater than any one of the fourth threshold, the preset positive voltage drop threshold, the sixth threshold, and the preset negative voltage drop threshold.

[0192] In some feasible embodiments, as shown in FIG17 , the control unit 81 shown in FIG16 further includes a current detection circuit 812. The current detection circuit 812 and the controller 811 may be provided separately, in which case the current detection circuit 812 may also be provided outside the control unit 81. Alternatively, the current detection circuit 812 may also be integrated within the controller 811, and the specific location of the current detection circuit 812 is not limited herein.

[0193] The abnormality detection method on the positive electrode side corresponding to FIG17 will be described below.

[0194] 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.

[0195] Furthermore, the controller 811 is configured to obtain an amplified positive impedance at the first connection location based on the amplified positive voltage drop and the current of the positive power terminal 800, and to determine whether the connection between the positive power terminal 800 and the positive lead 90 is abnormal. The abnormal state includes when the amplified positive impedance is greater than or equal to a fifth threshold, in which case the positive power terminal 800 and the positive lead 90 are in poor contact. In other words, the controller 811 is configured to determine that the positive power terminal 800 and the positive lead 90 are in poor contact in response to the amplified positive impedance being greater than or equal to the fifth threshold, and to determine that the positive power terminal 800 and the positive lead 90 are in good contact in response to the amplified positive impedance being less than the fifth threshold.

[0196] 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 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, thereby improving the accuracy and speed of abnormality detection on the positive side.

[0197] The abnormality detection method on the negative electrode side corresponding to FIG17 will be described below.

[0198] 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.

[0199] Furthermore, the controller 811 is configured to obtain an amplified negative electrode impedance at the second connection location d based on the amplified negative electrode voltage drop and the current of the negative power supply terminal 801, and to determine whether the connection state between the negative power supply terminal 801 and the negative lead 91 is abnormal. The abnormal state includes when the amplified negative electrode impedance is greater than or equal to a seventh threshold, in which case the negative power supply terminal 801 and the negative lead 91 are in poor contact. In other words, the controller 811 is configured to determine that the negative power supply terminal 801 and the negative lead 91 are in poor contact in response to the amplified negative electrode impedance being greater than or equal to the seventh threshold, and to determine that the negative power supply terminal 801 and the negative lead 91 are in good contact in response to the amplified negative electrode impedance being less than the seventh threshold.

[0200] In the implementation of the present application, when the negative power terminal 801 and the negative lead 91 are in poor contact, the negative impedance at the second connection location d increases, but the value is small. Therefore, after obtaining the amplified negative impedance based on the amplified negative voltage drop and the current of the negative power terminal 801, the negative impedance change process can be better detected. Without waiting for the heat accumulation process at the second connection location d, it is possible to quickly identify whether the connection state between the negative power terminal 801 and the negative lead 91 is abnormal, thereby improving the accuracy and speed of abnormality detection on the negative side. Furthermore, it is possible to simultaneously take into account abnormality detection on both the positive and negative sides, making the detection method more flexible and comprehensive.

[0201] Alternatively, in some feasible embodiments, if the controller 811 can directly detect the changes in the positive and negative voltage drops, the differential amplifier circuit 810 may not be provided within the control unit 81. In this case, the controller 811 is configured to obtain the positive electrode impedance at the first connection location c based on the positive electrode voltage drop and the current of the positive power supply terminal 800, and to compare the positive electrode impedance with a preset positive electrode impedance threshold to determine whether the connection between the positive power supply terminal 800 and the positive lead 90 is abnormal. For a specific implementation, see FIG17 for the abnormality detection method on the positive side, which is not described in detail here. The preset positive electrode impedance threshold is less than the fifth threshold. The controller 811 is also configured to obtain the negative electrode impedance at the second connection location d based on the negative electrode voltage drop and the current of the negative power supply terminal 801, and to compare the negative electrode impedance with a preset negative electrode impedance threshold to determine whether the connection between the negative power supply terminal 801 and the negative lead 91 is abnormal. For a specific implementation, see FIG17 for the abnormality detection method on the negative side, which is not described in detail here. The preset negative electrode impedance threshold is less than the seventh threshold.

[0202] In some feasible embodiments, after the connection state of the power distribution connector 80 reaches an abnormal state, the impedance of at least one of the first connection position c and the second connection position d continues to increase. In this case, the controller 811 is configured to control the switch 806 to open in response to any 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 a first preset impedance threshold. This prevents further increases in the impedance of the first connection position c and the second connection position d, thereby enhancing the reliability of the power distribution connector 80. The first preset impedance threshold is greater than any of the fourth threshold, the preset positive impedance threshold, the sixth threshold, and the preset negative impedance threshold.

[0203] In some feasible embodiments, the control unit 81 or controller 811 is configured to output an alarm message to a user interface in response to an abnormal connection state of the power distribution connector 80 to instruct 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 selected from the group consisting of the temperature at any location between the first connection position c and the second connection position d, the first temperature, the second temperature, the amplified positive electrode voltage drop or the positive electrode voltage drop, the amplified negative electrode voltage drop or the negative electrode voltage drop, the amplified positive electrode impedance or the positive electrode impedance, and the amplified negative electrode impedance or the negative electrode impedance, without limitation herein.

[0204] In the embodiments corresponding to Figures 13 to 17 above, 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.

[0205] The wireless communication system and its working principle provided in the embodiment of the present application will be illustrated below with reference to Figures 18 and 19.

[0206] Refer to Figure 18, which is a structural block diagram of a wireless communication system provided in an embodiment of the present application. As shown in Figure 18, the wireless communication system 18 includes a power connector 180 and a communication device 181. Exemplarily, the power connector 180 can be the power connector 2 shown in Figures 2 to 6 above, and the communication device 181 can be the communication device 5 shown in Figures 7 to 12. Among them, the power connector 180 is used to receive electrical energy provided by an external power source to power the communication device 181. The external power source can be a distribution box or a distribution cabinet. It can be understood that the communication device 181 can identify in advance whether the connection status of the power connector 180 is an abnormal state, 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.

[0207] In some feasible embodiments, as shown in FIG19 , the wireless communication system 18 shown in FIG18 further includes a power distribution device 182. Exemplarily, the power distribution device 182 may be the power distribution device 8 shown in FIG13 to FIG17 , for example, a distribution box or a distribution cabinet. The power distribution device 182 is used to supply power to the communication device 181 via the power connector 180. It is understood that the power distribution device 182 can proactively identify whether the connection status of the internal power distribution connector is abnormal, preventing the power distribution connector from heating and carbonizing, or even burning the power distribution device 182. In this case, abnormality detection can be performed simultaneously for both the power distribution connector and the power connector 180, further enhancing the security of the wireless communication system 18. Alternatively, the power connector 180 and the communication device 181 shown in FIG19 may be conventional power connectors and communication devices. In this case, the sampling unit and male signal terminals may not be added to the power connector 180, and the female signal terminals may not be added to the communication device 181. This is not a specific limitation.

[0208] It should be noted that the above terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0209] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection 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 to output the second positive electrode voltage through the second male positive electrode signal terminal. Positive voltage; 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 supply terminal and the negative lead is abnormal. Including 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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