Cable connecting device capable of being intelligently monitored
The intelligent monitoring cable connection device integrates multiple safety protection measures, enabling fast and safe connection and disconnection of charging piles. This improves the flexibility and utilization of charging piles, reduces maintenance costs, enhances user experience and management efficiency, and solves the problems of resource waste and safety hazards in existing charging pile devices.
Patent Information
- Application Number
- CN202423142960.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-18
AI Technical Summary
Existing charging pile devices suffer from low utilization, poor safety, poor environmental adaptability, and high maintenance costs, especially the resource waste caused by fixed design and the lack of effective monitoring of cable connections.
A smart monitoring cable connection device was designed, which integrates locking components, indicator components, humidity monitoring components, temperature monitoring components, and current monitoring components. It realizes real-time status monitoring and control through electronic locks and control systems, supports quick connection and disconnection, and is managed through a remote monitoring platform.
It improves the flexibility and utilization of charging piles, ensures safety and stability, reduces maintenance costs, provides a convenient operating experience and intelligent management, and solves the problems of charging queuing and resource waste.
Smart Images

Figure CN223672319U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to charging pile technical field, especially a cable connecting device of intelligent monitoring. BACKGROUND
[0002] With the rapid development of new energy automobile industry, mobile charging pile as a new type of electric vehicle charging equipment will gradually be applied to each charging station. Weather, power, location, unreasonable layout, unbalanced service and other factors have a great influence on the installation position of the charging pile device, which seriously affects the detection and charging efficiency of the charging pile. Therefore, with the increase of new energy vehicle ownership, the demand for charging piles is increasing, and mobile DC charging piles will become the market mainstream.
[0003] With the popularity of new energy vehicles, charging piles as the key facilities for electric vehicle charging, their safety, reliability and efficiency have attracted widespread attention. The charging piles in the prior art are mostly fixed design, which has the following problems:
[0004] The existing charging station charging piles are installed on the fixed base, and the power distribution room cable is connected to the charging pile plastic shell circuit breaker through the cable trench.
[0005] Low utilization rate of charging pile: fixed charging pile cannot be moved, which leads to low utilization rate of charging facilities when vehicles are queuing for charging or non-electric vehicles occupy charging positions, resulting in resource waste.
[0006] Safety problem: the cable connection device of the existing charging pile lacks effective monitoring measures, and the cable state cannot be monitored in real time, which leads to safety hazards such as electric leakage and short circuit.
[0007] Poor environmental adaptability: when the charging pile works in outdoor environment, it is affected by humidity, temperature and other environmental factors, and the existing technology lacks effective environmental monitoring and protection measures.
[0008] High maintenance cost: due to the lack of real-time monitoring, the fault of the charging pile can only be found after it occurs, which leads to high maintenance cost and long repair response time. INVENTION CONTENTS
[0009] In view of the problems existing in the prior art, the utility model provides a cable connecting device of intelligent monitoring, the utility model discloses the quick connection cut structure design, utilize this design, when providing the charging service for the charging station, the utilization of equipment is increased, the economic benefit is increased, the waiting time of customer is saved, and the demand of stopping and charging can be basically realized, so that the charging queue, the phenomenon of oil vehicle occupation, the low utilization of charging facilities, the waste of charging resources and other problems are solved. The utility model combines the advantages of mobile station and fixed charging station, uses 120kW or more direct current integrated machine, improves the stability and charging efficiency of mobile station, and achieves the convenience and flexibility of fixed pile station. The cable connecting device of the utility model can select degradable biological base plastics, recycled aluminum alloy and copper alloy and other metal materials, and special alloy with low environmental impact, to ensure that the materials are recyclable, low pollution, improve the overall environmental performance and sustainability of the product.
[0010] In order to achieve the above object, the utility model technical scheme is as follows:
[0011] The utility model provides a cable connecting device of intelligent monitoring, the cable connecting device corresponding end respectively with the power distribution room, the electric connection of charging pile is carried out,
[0012] The cable connecting device includes locking assembly, indication assembly, humidity monitoring assembly, temperature monitoring assembly, current monitoring assembly, connecting device plug, power cable socket matched with connecting plug,
[0013] The locking assembly is arranged on the connecting device plug and is used for locking the connecting device plug.
[0014] The indication assembly, humidity monitoring assembly, temperature monitoring assembly and current monitoring assembly are installed on the connecting device plug and power cable socket.
[0015] The indication assembly is used for indicating the connection state between the connecting device plug and the power cable socket.
[0016] The humidity monitoring assembly is used for monitoring the humidity of the environment around the cable connecting device.
[0017] The temperature monitoring assembly is used for monitoring the temperature inside the cable connecting device.
[0018] The current monitoring assembly is used for monitoring the current of the cable connecting device.
[0019] The connecting device plug is used for plugging with the power cable socket, so as to realize the power supply of the power distribution room to the charging pile.
[0020] Preferably, the cable connection device further comprises a connection plug cover arranged on the connection device plug for protecting the connection device plug from the external environment when not in use.
[0021] The connection plug cover is locked on the connection device plug by the locking assembly.
[0022] Preferably, the cable connection device further comprises a resistance grip arranged on the side of the connection device plug for providing a good holding and operating experience when plugging and unplugging the connection device plug.
[0023] Preferably, the connection device plug is connected to the three-phase incoming line end of the molded case circuit breaker of the charging pile through a cable; and the power cable socket is connected to the power distribution room through a cable.
[0024] When the connection device plug is plugged into the power cable socket, the pin of the connection device plug is inserted into the socket of the power cable socket.
[0025] Preferably, the locking assembly comprises an electronic lock, and a position sensor is further arranged in the electronic lock for monitoring the state of the electronic lock in real time.
[0026] Preferably, the indicating assembly is a connection confirmation power lamp (2); the humidity monitoring assembly is a humidity-sensitive resistor; the temperature monitoring assembly is a thermistor; and the current monitoring assembly is a shunt resistor (5).
[0027] Preferably, the charging pile is further provided with a control system; the control system is electrically connected to the corresponding ends of the electronic lock, the connection confirmation power lamp, the humidity-sensitive resistor, the thermistor and the shunt resistor through the circuit breaker, for controlling and monitoring the working state of the cable connection device; and the control system comprises a microcontroller or a PLC controller.
[0028] The technical scheme of the utility model has the following beneficial effects:
[0029] The utility model discloses a set of novel intelligent monitoring cable connection device is installed between the molded case circuit breaker incoming line front end of charging pile and distribution cable, so that the charging pile can provide charging service for customers at any position in the charging station, thereby solving the problems of charging queuing, oil vehicle occupying position, low utilization rate of charging facilities and waste of charging resources.
[0030] The intelligent monitoring cable connection device can realize quick and safe connection and disconnection of the charging pile, improve the flexibility and utilization rate of the charging pile, and integrate multiple safety protection measures such as electronic lock, connection confirmation power lamp, humidity monitoring, temperature monitoring and current monitoring, so as to monitor the cable state in real time and discover and handle safety hazards in time.
[0031] The utility model discloses improve the adaptability and stability of charging pile under different environmental conditions through humidity monitoring and temperature monitoring, reduce the influence of environmental factors on the performance of charging pile.
[0032] The utility model discloses reduce maintenance cost: intelligent monitoring system can real -time upload cable connection device's working state information, so that maintenance personnel can position problem and carry out maintenance quickly, significantly reduced maintenance cost and response time.
[0033] The utility model discloses improve user experience: intelligent monitoring cable connection device provides more intuitive and convenient operation experience, and user can understand charging connection state intuitively through the connection confirmation power lamp, improved the convenience and satisfaction of use.
[0034] The utility model discloses realize intelligent management: through remote monitoring platform, management personnel can real -time monitoring and management charging pile's operation situation, realizes intelligent, automation operation and maintenance management. DETAILED DESCRIPTION
[0035] Fig. 1 It is the structural schematic diagram of the utility model;
[0036] Fig. 2 It is the control schematic diagram of the utility model. DETAILED DESCRIPTION
[0037] The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the utility model, and cannot be understood as the limitation of the utility model.
[0038] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as the limitation of the utility model.
[0039] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" are only used for descriptive purpose and cannot be understood as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined as "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.
[0040] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0041] In the present application, unless otherwise specifically defined and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0042] Referring to Figs. 1-2 The present application provides a kind of cable connection device 10 of intelligent monitoring, the cable connection device corresponding end is electrically connected with power distribution room, charging pile respectively;
[0043] The cable connection device includes locking assembly, indicating assembly, humidity monitoring assembly, temperature monitoring assembly, current monitoring assembly, connection device plug 6, power cable socket 7 adapted with connection plug;
[0044] The locking assembly is arranged on the connection device plug 6, for locking the connection device plug 6;
[0045] The connection device plug 6, power cable socket 7 are all equipped with the indicating assembly, humidity monitoring assembly, temperature monitoring assembly, current monitoring assembly described above;
[0046] The indicating assembly is used to indicate the connection state between the connection device plug and the power cable socket;
[0047] The indication assembly is a connection confirmation power lamp 2, which provides instant visual feedback to inform the operator of the connection status between the connection device plug and the power cable socket.
[0048] The humidity monitoring assembly monitors the humidity of the environment surrounding the cable connection device 10. By monitoring humidity, it can prevent damage or malfunction of electrical equipment caused by excessive humidity. By controlling humidity, it reduces the risk of corrosion and electrical short circuits, prolongs the service life of the equipment, and reduces the cost of maintenance and replacement of parts by preventing failures caused by humidity problems.
[0049] The temperature monitoring assembly monitors the temperature inside the cable connection device 10 to ensure that the device operates at a safe temperature. In the event of overheating, it can trigger an alarm or automatically cut off the power supply to prevent damage to the device. By monitoring and controlling temperature, it reduces the risk of fire and equipment damage, and improves device performance and stability by operating within an appropriate temperature range.
[0050] The current monitoring assembly monitors the current size of the cable connection device 10 to ensure that the current is within a safe range. By monitoring the current, it can manage the load to prevent damage to the device caused by overloading. By controlling the current, it reduces the risk of electrical fires and equipment damage.
[0051] The connection device plug 6 is used to connect with the power cable socket 7 to achieve power supply from the power distribution room to the charging pile. The plug housing of the connection device plug 6 has good insulation performance to prevent electric shock and other accidents.
[0052] Further, the cable connection device 10 also includes a connection plug cover 8, which is arranged on the connection device plug 6 to protect the connection device plug from the external environment when not in use. It protects the connection device plug 6 from external environments such as dust, moisture, corrosive gases, etc., thereby extending the service life of the connection device plug 6 and maintaining its good electrical connection performance. The connection plug cover 8 helps to reduce wear and corrosion of the plug, thereby extending its service life. The connection plug cover 8 helps to keep the electrical contact parts of the connection device plug 6 clean and dry, maintaining its good electrical performance and connection reliability. The connection plug cover 8 is locked on the connection device plug 6 by the locking assembly 1.
[0053] Further, the cable connection device 10 further comprises a resistance grip 9 arranged on the connection device plug side, which provides a good holding and operating experience when plugging and unplugging the connection device plug, provides a stable holding point and sufficient friction to facilitate the operator to plug and unplug the plug more safely and conveniently; the design of the resistance grip 9 provides a comfortable holding area, which makes the operator feel better when plugging and unplugging the connection device plug 6, reducing hand fatigue; the resistance grip 9 reduces the risk of the plug slipping during plugging and unplugging, thereby reducing the safety hazards in the operation process.
[0054] Further, the connection device plug 6 is connected to the three-phase incoming line end of the molded case circuit breaker of the charging pile through the cable, ensuring that the three-phase power can be stably transmitted to the charging pile, and improving the stability and reliability of power supply through three-phase power transmission, reducing the voltage imbalance problem that may be caused by single-phase or two-phase power supply; the power supply cable socket 7 is connected to the power distribution room through the cable; when the connection device plug 6 is plugged with the power supply cable socket 7, the pin of the connection device plug 6 is inserted into the socket of the power supply cable socket 7, and the precise butt joint design of the connection device plug 6 and the power supply cable socket 7 reduces the risk of poor contact and electrical failure, improving the safety of the system.
[0055] Further, the locking assembly comprises an electronic lock 1, and a position sensor is further arranged in the electronic lock, which is used to monitor the state of the electronic lock in real time, including whether it has been locked or unlocked; by transmitting the data of the position sensor to the remote monitoring platform, the management personnel can remotely monitor the state of the electronic lock, realizing intelligent management.
[0056] Further, the indication component is connected to the connection confirmation power lamp 2; the humidity monitoring component is a humidity-sensitive resistor 3, the temperature monitoring component is a thermistor 4, and the current monitoring component is a shunt resistor 5; the charging pile is also provided with a control system; the control system is electrically connected to the electronic lock, the connection confirmation power lamp 2, the humidity-sensitive resistor 3, the thermistor 4, and the shunt resistor 5 through the circuit breaker, respectively, for controlling and monitoring the working state of the cable connection device; the humidity-sensitive resistor 3, the thermistor 4, and the shunt resistor 5 are respectively provided with a humidity-sensitive resistor, a thermistor 4, and a shunt resistor 5; the control system includes a microcontroller or a PLC controller; the control system in the charging pile centrally manages the electronic lock, the connection confirmation power lamp 2, the humidity-sensitive resistor 3, the thermistor 4, and the shunt resistor 5, realizes comprehensive control and monitoring of the working state of the cable connection device, and can quickly cut off the power supply when detecting abnormal conditions through the connection with the circuit breaker, thereby protecting the equipment and the user safety. The control system automatically executes corresponding control commands, such as adjusting the charging parameters or issuing an alarm, according to the collected data and the preset logic. The real-time monitoring and rapid response capability of the control system significantly improves the safety of the charging pile and reduces the risk of electrical accidents. The automatic control response reduces the need for human intervention and improves the operation efficiency of the charging pile. By reducing the need for human monitoring and optimizing the maintenance plan, the control system helps to reduce the long-term operating cost of the charging pile. The control system can adapt to different working environments to ensure reliable operation of the charging pile under various conditions.
[0057] The working principle of the utility model is as follows:
[0058] 1. Before the cable connection device 10 is started: the electronic lock 1 is in a locked state, the electronic lock is provided with a position sensor inside, which can monitor the state of the electronic lock in real time, the connection confirmation power lamp 2 is in standby and no abnormal condition is displayed as evergreen, and the abnormal condition is red, the connection plug cover 8 is in a locked connection device plug state, the humidity-sensitive resistor 3, the thermistor 4, and the shunt resistor 5 keep real-time monitoring state transmission to the control system, and the connection confirmation power lamp 2 displays red if there is an abnormal condition.
[0059] 2、Cable connection device 10 is enabled: when receiving the signal that needs to power the charging pile, the connection plug cover 8 is unlocked, the connection confirmation power supply lamp 2 is green, the electronic lock 1 buckle is pressed to open the connection device plug cover 8, the connection device plug 6 is inserted into the power cable socket 7, it is ensured that the plug is inserted into the position and the contact is good, at this time the connection confirmation power supply lamp 2 should be green and flickering, indicating that the connection is successful, if the connection confirmation power supply lamp 2 is always green, it should be checked whether the connection device plug 6 and the power cable socket 7 are connected in place, and whether the power supply is normal; start the charging pile, start the charging operation, when the shunt resistor 5 detects the current output, the connection confirmation power supply lamp (2) displays always yellow, in the charging process, the humidity sensitive resistor 3 and the thermistor 4 will monitor the environmental humidity and the temperature of the connection device in real time, if the humidity or the temperature exceeds the set value, the charging pile will automatically stop charging and issue an alarm, the shunt resistor 5 will measure the charging current in real time, so as to monitor and manage the charging process.
[0060] 3、Cable connection device 10 is enabled: after the charging is completed, the charging operation of the charging pile is stopped first, when the shunt resistor 5 detects no current output, the connection confirmation power supply lamp 2 displays green flickering, and after confirmation, the connection between the power cable device socket 7 and the connection device plug (6) is disconnected; the connection confirmation power supply lamp 2 displays always green. The connection device plug cover 8 is covered to protect the plug from dust, moisture and other external factors, and the electronic lock (1) is in the locked state. The humidity sensitive resistor 3, the thermistor 4 and the shunt resistor 5 remain in the real-time monitoring state and are transmitted to the control system, and if there is an abnormal condition, the connection confirmation power supply lamp 2 displays red.
[0061] The utility model further provides a kind of intelligent monitoring cable connection device's use method, comprising the following steps:
[0062] Step a: electronic lock is opened, and connection device plug 6 is connected with power cable socket 7, and whether abnormality is detected by connection confirmation power supply lamp 2;Operation personnel can immediately know whether the connection is successful, improve the accuracy and efficiency of operation;By detecting abnormality, equipment damage or security risks caused by incorrect connection can be avoided.
[0063] Step b: if the connection is successful, continue to the next step;If the connection fails, control system receives signal and uploads abnormal information to remote monitoring platform, prompting personnel to check and repair;When the connection fails, it can respond quickly, reduce equipment failure time, improve the reliability of system;Find and repair problems in time, avoid safety accidents caused by poor connection;
[0064] Step c: Real-time monitoring and analysis of the electronic lock, humidity resistor 3, thermistor 4, shunt resistor 5 corresponding to the generated electronic lock state, humidity, temperature and current size transmission signal by the control system, and according to the preset parameters and logical judgment of the working state of the connecting device is normal; Through real-time monitoring, potential safety hazards such as high humidity, abnormal temperature or excessive current are found in time; According to the monitoring result, the equipment operation parameter is adjusted, the equipment performance is optimized and the service life is prolonged;
[0065] Step d: When detecting abnormal working condition, the control system takes corresponding measures, including issuing an alarm, cutting off the power supply, adjusting the charging parameters, to ensure the safe operation of the charging pile and the safety of the user, and upload the working state information to the remote monitoring platform, so that the management personnel can real-time monitor and manage the operation of the charging pile; By automatically taking emergency measures, the equipment and users are protected from harm; Management personnel can real-time monitor the equipment state and make timely decisions to improve management efficiency and response speed.
[0066] From the above embodiment, the utility model discloses a new design of intelligent monitoring connecting device between the charging pile machine molded case circuit breaker incoming line front end and distribution cable, which can provide charging service for customers at any position in the charging station, so as to solve the problems of charging queue, oil vehicle occupation, low utilization rate of charging facilities and waste of charging resources.
[0067] The utility model discloses an intelligent monitoring cable connecting device, which can realize quick and safe connection and disconnection of the charging pile, improve the flexibility and utilization rate of the charging pile, and integrate multiple safety protection measures such as electronic lock, connection confirmation power lamp, humidity monitoring, temperature monitoring and current monitoring, so as to real-time monitor the cable state and discover and handle safety hazards in time.
[0068] The utility model discloses a humidity monitoring and temperature monitoring, which improves the adaptability and stability of the charging pile under different environmental conditions and reduces the influence of environmental factors on the performance of the charging pile.
[0069] The utility model reduces the maintenance cost: the intelligent monitoring system can real-time upload the working state information of the cable connecting device, so that the maintenance personnel can quickly locate the problem and perform maintenance, which significantly reduces the maintenance cost and response time.
[0070] The utility model improves user experience: the intelligent monitoring cable connecting device provides more intuitive and convenient operation experience, and the user can intuitively understand the charging connection state through the connection confirmation power lamp, which improves the convenience and satisfaction of use.
[0071] The utility model realizes intelligent management: through remote monitoring platform, management personnel can real -time monitoring and management charging stake's operation, realizes intelligent, automation operation and maintenance management.
[0072] The utility model has collected the advantage of mobile station and fixed charging station, uses 120kW above direct current all -in -one, has improved the stability and charging efficiency that mobile station cannot do, can also do the convenience and flexibility that fixed stake station cannot reach.
[0073] The above-mentioned is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made under the utility model concept of the utility model, or direct / indirect application in other related technical fields is included in the patent protection range of the utility model.
Claims
1. An intelligently monitorable cable connection device, characterized by The cable connection device is electrically connected with the power distribution room and the charging pile respectively. The cable connection device comprises a locking assembly, an indicating assembly, a humidity monitoring assembly, a temperature monitoring assembly, a current monitoring assembly, a connection device plug (6), a power supply cable socket (7) matched with the connection plug, The locking assembly is arranged on the connection device plug (6) and is used for locking the connection device plug (6). The indicating assembly, the humidity monitoring assembly, the temperature monitoring assembly and the current monitoring assembly are arranged on the connection device plug (6) and the power supply cable socket (7). The indicating assembly is used for indicating the connection state between the connection device plug and the power supply cable socket. The humidity monitoring assembly is used for monitoring the humidity of the surrounding environment of the cable connection device. The temperature monitoring assembly is used for monitoring the temperature inside the cable connection device. The current monitoring assembly is used for monitoring the current of the cable connection device. The connection device plug (6) is used for plugging with the power supply cable socket (7) to realize power supply of the power distribution room to the charging pile.
2. The intelligently monitorable cable connection device according to claim 1, characterized in that The cable connection device further comprises a connection plug cover (8) arranged on the connection device plug (6) and used for protecting the connection device plug from the external environment when not in use. The connection plug cover (8) is locked on the connection device plug (6) by the locking assembly (1).
3. The intelligently monitorable cable connection device according to claim 1, characterized in that The cable connection device further comprises a resistance handle (9) arranged on the side of the connection device plug and used for providing good holding and operating experience when plugging and unplugging the connection device plug.
4. The intelligently monitorable cable connection device according to claim 1, characterized in that The connection device plug (6) is connected with the three-phase incoming line end of the molded case circuit breaker of the charging pile through a cable; and the power supply cable socket (7) is connected with the power distribution room through a cable. When the connection device plug (6) is plugged with the power supply cable socket (7), the pin of the connection device plug (6) is inserted into the socket of the power supply cable socket (7).
5. The intelligently monitorable cable connection device according to claim 2, characterized in that The locking assembly comprises an electronic lock, and a position sensor is further arranged in the electronic lock and used for monitoring the state of the electronic lock in real time.
6. The intelligently monitorable cable connection device according to claim 1, characterized in that The indicating assembly is a connection confirmation power lamp (2), the humidity monitoring assembly is a humidity resistor (3), the temperature monitoring assembly is a thermistor (4), and the current monitoring assembly is a shunt resistor (5).
7. The intelligently monitorable cable connection arrangement as claimed in claim 6, characterized in that The charging pile further comprises a control system; the control system is electrically connected with the electronic lock, the connection confirmation power lamp (2), the humidity resistor (3), the thermistor (4) and the shunt resistor (5) through the circuit breaker respectively and is used for controlling and monitoring the working state of the cable connection device; and the control system comprises a microcontroller or a PLC controller.