An intelligent cable with adjustable core gears and its application method

Abstract

The present invention discloses an intelligent cable with adjustable core gears and its application method, including a cable and a gear adjustment device; one end of the cable is connected to a power supply end, and the other end of the cable is connected to a power consumption end; through the cable, power transmission is realized from the power supply end to the power consumption end; the gear adjustment device is embedded in the cable near the power supply end; the gear adjustment device is used to detect the temperature inside the core and adjust the core gear inside the cable according to the detected temperature. The core gears include a zero gear, a first gear, a second gear, and a third gear. By arranging three branch cables of the same size and material inside the cable and conducting or cutting off the power of the three branch cables according to a preset temperature threshold, the versatility of the cable can be improved, the labor cost and operation cost can be reduced, and safety accidents and resource waste caused by overheating can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent cables, and particularly to an intelligent cable with adjustable core gears and its application method. Background Art

[0002] Currently, with the rapid development of modern technology and industry, power transmission plays a crucial role in various fields. As a key carrier for power transmission, the optimization of the performance and function of cables has become an urgent problem to be solved.

[0003] Traditional cables usually adopt a fixed copper core design, which determines that the cables can only work effectively within a specific and fixed power range. In actual application scenarios, this limitation becomes more and more prominent.

[0004] On the one hand, the market environment is becoming increasingly diverse, and numerous complex power consumption scenarios require cables to operate stably in various power environments. For example, in some industrial factories, the power consumption of different production stages or different equipment varies greatly; in commercial complexes, there are diverse merchant types, and the power demands during peak and off-peak periods are also completely different.

[0005] On the other hand, traditional cables cannot be automatically adjusted according to actual power demands. When the power consumption increases significantly, it is necessary to manually replace them with high-power cables to avoid overheating of the cables and thus prevent safety accidents; conversely, when the power consumption decreases significantly, it is also necessary to manually replace them with low-power cables, otherwise it will cause waste of resources and unnecessary cost increase.

[0006] Therefore, this method of manually replacing cables is not only cumbersome and inefficient, but may also lead to problems such as production interruption and unstable power supply due to untimely operation.

[0007] At the same time, in today's increasingly energy-constrained situation, the application of high-power cables in low-power power consumption demand scenarios will also lead to inefficient use of energy, which does not conform to the development trend of energy conservation and emission reduction. Therefore, it is imperative to develop an intelligent cable with adjustable core gears to meet changing power demands, improve power transmission efficiency, and reduce resource waste. Summary of the Invention

[0008] In view of the above technical problems, the present invention provides an intelligent cable with adjustable core gears and its application method, which can improve the versatility of the cable, reduce labor costs and operating costs, and avoid safety accidents and resource waste caused by overheating.

[0009] The technical solution used in the present invention is as follows: an intelligent cable with adjustable core gears, including a cable and a gear adjustment device; one end of the cable is connected to a power supply end, and the other end of the cable is connected to a power consumption end; through the cable, power transmission from the power supply end to the power consumption end is achieved; the gear adjustment device is embedded in the cable near the power supply end; the gear adjustment device is used to detect the temperature inside the core and adjust the core gear inside the cable according to the detected temperature.

[0010] Further, the core gears include a zero gear, a first gear, a second gear, and a third gear.

[0011] Further, the cable further includes a first branch cable L1, a second branch cable L2, a third branch cable L3, a ground wire E, a power supply end cable, a power consumption end cable, and a polyvinyl chloride outer shell; the power supply end cable is arranged on the left side of the cable, connected to the first ends of the first branch cable L1, the second branch cable L2, and the third branch cable L3, and embedded inside the gear adjustment device; the power consumption end cable is arranged on the right side of the cable, connected to the second ends of the first branch cable L1, the second branch cable L2, and the third branch cable L3.

[0012] Further, the core cross-sectional area of the power supply end cable is equal to the core cross-sectional area of the power consumption end cable; the core cross-sectional areas of the first branch cable L1, the second branch cable L2, and the third branch cable L3 are one-third of the core cross-sectional area of the power supply end cable 105 or the power consumption end cable.

[0013] Further, the first branch cable L1, the second branch cable L2, the third branch cable L3, the ground wire E, the power supply end cable, and the power consumption end cable are all composed of a core and an insulating outer shell.

[0014] Further, the first branch cable L1, the second branch cable L2, and the third branch cable L3 are included in the cable in a manner of being intertwined and not intertwined with each other.

[0015] Further, the gear shifting device further includes a first IGBT, a second IGBT, a third IGBT, a main control unit, a temperature detection unit, and a display unit; the first IGBT is disposed on the insulating housing of the first branch cable L1, and the first end pin and the second end pin of the first IGBT are connected to the core of the first branch cable L1, and the core between the first end pin and the second end pin of the first IGBT is disconnected, and the gate pin of the first IGBT is connected to the main control unit; the second IGBT is disposed on the insulating housing of the second branch cable L2, and the first end pin and the second end pin of the second IGBT are connected to the core of the second branch cable L2, and the core of the first end pin and the second end pin of the second IGBT is disconnected, and the gate pin of the second IGBT is connected to the main control unit; the third IGBT is disposed on the insulating housing of the third branch cable L3, and the first end pin and the second end pin of the third IGBT are connected to the core of the third branch cable L3, and the core of the first end pin and the second end pin of the third IGBT is disconnected, and the gate pin of the third IGBT is connected to the main control unit; the temperature detection unit is disposed on the insulating housings of the first branch cable L1, the second branch cable L2, and the third branch cable L3 for detecting the internal temperature of the cable; the display unit is disposed on the surfaces of the first IGBT, the second IGBT, the third IGBT, the main control unit, and the temperature detection unit for displaying the current gear state information; the gear state information includes the current real-time temperature of the cable, and the usage states of the first branch cable L1, the second branch cable L2, and the third branch cable L3; the usage states include a powered-on state, an idle state, and a damaged state.

[0016] Further, the zero gear refers to that the main control unit controls the first IGBT, the second IGBT, and the third IGBT to be all cut off simultaneously; the first gear refers to that the main control unit controls any two of the first IGBT, the second IGBT, and the third IGBT to be conducted simultaneously; the second gear refers to that the main control unit controls any one of the first IGBT, the second IGBT, and the third IGBT to be conducted; the third gear refers to that the main control unit controls the first IGBT, the second IGBT, and the third IGBT to be all conducted simultaneously.

[0017] A method for automatically adjusting the core gear position, which is applied to an intelligent cable with adjustable core gear position, includes the following steps: Step S110, the cable is powered on to make the first branch cable L1, the second branch cable L2 and the third branch cable L3 powered on simultaneously; Step S210, the temperature sensor detects the current temperature inside the cable; Step S310, determine whether the current temperature inside the cable is lower than the threshold T1. If so, go to Step S410; otherwise, go to Step S910; Step S410, cut off the power supply of the third branch cable L3 and keep the first branch cable L1 and the second branch cable L2 powered on; Step S510, determine whether the current temperature inside the cable is lower than the threshold T1. If so, go to Step S610; otherwise, go to Step S110; Step S610, cut off the power supply of the second branch cable L2 and keep the first branch cable L1 powered on; Step S710, determine whether the current temperature inside the cable is lower than the threshold T1. If so, go to Step S810; otherwise, go to Step S410; Step S810, continue to keep the first branch cable L1 powered on; Step S910, determine whether the current temperature inside the cable is higher than the threshold T2. If so, go to Step S1010; otherwise, go to Step S110; Step S1010, the cable is powered off to make the first branch cable L1, the second branch cable L2 and the third branch cable L3 powered off simultaneously.

[0018] A method for automatically adjusting the core gear position, which is applied to an intelligent cable with adjustable core gear position, includes the following steps:. Step S120, the cable is powered on to make the first branch cable L1 powered on; Step S220, the temperature sensor detects the current temperature inside the cable; Step S320, determine whether the current temperature inside the cable is higher than the threshold T2. If so, go to Step S420; otherwise, go to Step S120; Step S420, make the first branch cable L1 and the second branch cable L2 powered on simultaneously; Step S520, determine whether the current temperature inside the cable is higher than the threshold T2. If so, go to Step S620; otherwise, go to Step S420; Step S620, make the first branch cable L1, the second branch cable L2 and the third branch cable L3 powered on simultaneously; Step S720, determine whether the current temperature inside the cable is higher than the threshold T2. If so, go to Step S820; otherwise, go to Step S620; Step S820, the cable is powered off to make the first branch cable L1, the second branch cable L2 and the third branch cable L3 powered off simultaneously.

[0019] The beneficial effects of the present invention compared with the prior art are as follows: By arranging three branch cables of the same size and material inside the cable, and assisting the gear adjustment module to control the on-off of the cable, the temperature sensor of the gear adjustment module is used to detect the temperature, and the internal temperature of the current cable is obtained in real time. According to the preset temperature threshold, the three branch cables are powered on and off. Therefore, (1) the versatility of the cable is greatly improved, and the trouble of frequently replacing the cable due to power mismatch is reduced; (2) effectively avoid the cable from overheating due to excessive power consumption, reduce the possibility of safety accidents such as fires, and ensure the safety of personnel and property; (3) avoid the overuse of high-power cables under low-power requirements, reduce resource waste, and reduce the cable procurement cost and storage cost; (4) reduce the labor cost caused by replacing the cable and the indirect cost brought by the interruption of production and operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 FIG. is an overall structure diagram of an intelligent cable with adjustable gears according to the present invention.

[0021] Figure 2 FIG. is an internal cross-sectional view of a branch cable in an intelligent cable according to the present invention.

[0022] Figure 3 FIG. is another internal cross-sectional view of a branch cable in an intelligent cable according to the present invention.

[0023] Figure 4 FIG. is an internal cross-sectional view of a gear adjustment device according to the present invention.

[0024] Figure 5 FIG. is an external direct view structure diagram of a gear adjustment device according to the present invention.

[0025] Figure 6 FIG. is a relationship connection display diagram between the IGBT and the branch cable according to the present invention.

[0026] Figure 7 FIG. is a functional schematic diagram of the gear adjustment device on the cable according to the present invention.

[0027] Figure 8 FIG. is an external direct view of the display unit according to the present invention.

[0028] Figure 9 FIG. is a flowchart of a method for automatically adjusting the core gear according to the present invention

[0029] Figure 10 FIG. is another flowchart of a method for automatically adjusting the core gear according to the present invention.

[0030] Reference numerals: For example, 100 - cable; 200 - gear adjustment device; 101 - first branch cable L1; 102 - second branch cable L2; 103 - third branch cable L3; 104 - ground wire E; 105 - power supply end cable; 106 - power consumption end cable; 110 - polyvinyl chloride housing; 201 - first IGBT; 202 - second IGBT; 203 - third IGBT; 204 - main control unit; 205 - temperature detection unit; 206 - display unit. Detailed implementation mode

[0031] In the description of the present invention, it should be understood that the orientation or positional 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", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0033] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0034] The present application will be described in detail below with reference to the drawings and in combination with embodiments. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0035] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] The present invention will be specifically described below with reference to the accompanying drawings:

[0037] An intelligent cable with adjustable core gears, as Figure 1 shown, includes a cable 100 and a gear adjustment device 200.

[0038] One end of the cable 100 is connected to a power supply end, and the other end of the cable 100 is connected to a power consumption end.

[0039] Through the cable 100, power transmission from the power supply end to the power consumption end is realized.

[0040] It can be understood that the power supply end refers to the part of the power output source in a circuit or power supply system, which is what we usually understand, including the end that enters the household distribution box after the power grid is stepped down by a power transformer. After the power is generated in the power plant, it is transmitted after voltage boosting. When it reaches near the user, it is stepped down by a transformer, and then the electric energy is transmitted to the starting point of the power supply line for each household user. For example, the socket on the wall of our home, the line connected behind it is the power supply end line. The live wire and neutral wire on the socket introduce alternating current into various electrical equipment, providing electrical energy for the normal operation of the electrical equipment. In an industrial environment, the power supply end of large three-phase AC motors and other equipment is the three-phase AC power supply line output from the factory's substation, and these lines provide a power source for high-power equipment such as motors.

[0041] The gear adjustment device 200 is embedded on the cable 100 near the power supply end.

[0042] The gear adjustment device 200 is used to detect the temperature inside the cable 100 and adjust the core gear inside the cable 100 according to the detected temperature.

[0043] The core gears include a zero gear, a first gear, a second gear, and a third gear.

[0044] It can be understood that for the internal temperature of the cable detected by the gear adjustment device 200, when the temperature is within the preset range value, it indicates that the current passing through the cable is relatively small, and the wire core of the first gear is used; when the temperature exceeds the preset range value, when the current passing through the cable is relatively large, the wire core of the second gear is used; when using the second gear and the temperature still exceeds the preset range value, the wire core of the third gear is used; when using the third gear and the temperature still exceeds the preset range value, the wire core of the zero gear is used. Using the zero gear means disconnecting the power connection of the cable through the gear adjustment device 200.

[0045] As Figure 2 and Figure 3 shown, the cable 100 further includes a first branch cable L1 101, a second branch cable L2 102, a third branch cable L3 103, a ground wire E 104, a power supply end cable 105 ( Figure 2 not shown in Figure 4 the supplementary illustration of, for reference), a power consumption end cable 106, and a polyvinyl chloride outer casing 110.

[0046] The power supply end cable 105 is disposed on the left side of the cable 100, connected to the first ends of the first branch cable L1 101, the second branch cable L2 102, and the third branch cable L3 103, and embedded inside the gear adjustment device 200.

[0047] The power consumption end cable 106 is disposed on the right side of the cable 100, connected to the second ends of the first branch cable L1 101, the second branch cable L2 102, and the third branch cable L3 103.

[0048] It can be understood that the left side of the cable 100 is close to the power supply end, and the right side of the cable 100 is close to the power consumption end.

[0049] The cross-sectional area of the wire core of the power supply end cable 105 is equal to the cross-sectional area of the wire core of the power consumption end cable 106.

[0050] The cross-sectional areas of the wire cores of the first branch cable L1 101, the second branch cable L2 102, and the third branch cable L3 103 are one-third of the cross-sectional area of the wire core of the power supply end cable 105.

[0051] It should be noted that the first branch cable L1 101, the second branch cable L2 102, the third branch cable L3 103, the ground wire E 104, the power supply end cable 105, and the power consumption end cable 106 are all composed of a wire core and an insulating outer casing.

[0052] It can be understood that for the internal temperature of the cable detected by the gear adjustment device 200, when the temperature is within the preset range, it indicates that the current passing through the cable 100 is small, and the core of the first gear is used, that is, any one of the three branch cables; when the temperature exceeds the preset range, when the current passing through the cable is large, the core of the second gear is used, that is, any two of the three branch cables; when using the second gear and the temperature still exceeds the preset range, the core of the third gear is used, that is, all of the three branch cables; when using the third gear and the temperature still exceeds the preset range, the core of the zero gear is used. Using the zero gear means disconnecting the power connection of the cable 100 through the gear adjustment device 200.

[0053] It can be understood that the power supply cable 105 is responsible for obtaining electrical energy from the power source, and its interface connected to the power source may have specific specifications and protection measures to adapt to different power source types (such as AC power or DC power). The power-consuming cable 106 then transmits the electrical energy to the electrical equipment or circuit, and its connection to the electrical equipment should also ensure good electrical conductivity and stability. For example, specific plug or socket forms may be used to prevent loosening and poor contact.

[0054] It can be understood that the core can be made of metal materials with good electrical conductivity such as copper and aluminum according to actual power consumption requirements. Copper core cables have high electrical conductivity and good flexibility, are suitable for long-term use and are not easily broken; aluminum core cables have relatively lower costs, but their electrical conductivity is slightly inferior to that of copper core cables and can be used in some scenarios that are sensitive to costs and do not have extremely high requirements for electrical conductivity. Therefore, the thickness and material selection of the core depend on the magnitude of the current and voltage level that the cable needs to carry.

[0055] It should be noted that the first branch cable L1 101, the second branch cable L2 102, and the third branch cable L3 103 in the cable 100 include ways of winding around each other and not winding around each other.

[0056] It can be understood that inside the PVC outer shell 110, in addition to the above-mentioned cable connection relationships, the cables may adopt a layered or zoned layout. For example, the ground wire E 104 can be laid separately in a relatively independent area to reduce the possibility of being affected by electromagnetic interference generated by other cables.

[0057] As Figure 4 shown, the gear adjustment device 200 further includes a first IGBT 201, a second IGBT 202, a third IGBT 203, a main control unit 204, a temperature detection unit 205, and a display unit 206 ( Figure 4 not shown, Figure 5 supplemented and shown).

[0058] The first IGBT 201 is disposed on the insulating housing of the first branch cable L1 101. The first end pin and the second end pin of the first IGBT 201 are connected to the core of the first branch cable L1 101. The core between the first end pin and the second end pin of the first IGBT 201 is disconnected. The gate pin of the first IGBT 201 is connected to the main control unit 204.

[0059] The second IGBT 202 is disposed on the insulating housing of the second branch cable L2 102. The first end pin and the second end pin of the second IGBT 202 are connected to the core of the second branch cable L2 102. The core between the first end pin and the second end pin of the second IGBT 202 is disconnected. The gate pin of the second IGBT 202 is connected to the main control unit 204.

[0060] The third IGBT 203 is disposed on the insulating housing of the third branch cable L3 103. The first end pin and the second end pin of the third IGBT 203 are connected to the core of the third branch cable L3 103. The core between the first end pin and the second end pin of the third IGBT 203 is disconnected. The gate pin of the third IGBT 203 is connected to the main control unit 204.

[0061] The main control unit 204 is an MCU chip.

[0062] The temperature detection unit 205 is a temperature sensor.

[0063] It can be understood that, as Figure 6 shown, the connection relationship between the first end pin and the second segment pin of the first IGBT 201 and the first branch cable L1 101 is shown in detail; the connection relationship between the first end pin and the second segment pin of the second IGBT 202 and the second branch cable L2 102 is shown in detail; the connection relationship between the first end pin and the second segment pin of the third IGBT 203 and the third branch cable L3 103 is shown in detail.

[0064] It can be understood that, as Figure 6 shown, the first end pin and the second segment pin of the first IGBT 201 are grafted on the core of the first branch cable L1 101, and the core between the first end pin and the second segment pin of the first IGBT 201 is disconnected. That is to say, the current flowing in from the power supply end passes through the first end pin, the PN junction of the first IGBT 201 to the second end pin in sequence. Similarly, the second IGBT 202 and the third IGBT 203 are explained in this way.

[0065] The temperature detection unit 205 is disposed on the insulating outer shells of the first branch cable L1 101, the second branch cable L2 102, and the third branch cable L3 103, and is used to detect the internal temperature of the cable 100.

[0066] The display unit 206 is disposed on the surfaces of the first IGBT 201, the second IGBT 202, the third IGBT 203, the main control unit 204, and the temperature detection unit 205, and is used to display the current gear state information.

[0067] As Figure 8 shown, the gear state information includes the real-time temperature of the current cable 100, and the usage states of the first branch cable L1 101, the second branch cable L2 102, and the third branch cable L3 103.

[0068] The usage states include the power-on state, the idle state, and the damaged state.

[0069] The back of the gear adjustment device 200 further includes a polyvinyl chloride outer shell 110 same as the cable 100, which is used to wrap the exposed area on the back of the gear adjustment device 200.

[0070] It can be understood that the first IGBT, the second IGBT, and the third IGBT have characteristics such as low on-resistance, high switching speed, and good thermal stability, and can be selected according to parameters such as the rated current, voltage, and power of the cable. For example, in a cable for high-power transmission, an IGBT module with a higher withstand voltage value and a larger current capacity is selected to ensure stable operation during long-term operation and avoid damage due to overcurrent or overvoltage.

[0071] It can be understood that the first IGBT, the second IGBT, and the third IGBT can adopt N-type or P-type IGBT types. For example: if an IGBT with an N-channel structure is adopted, the first end pin of the IGBT is the collector, and the second end pin of the IGBT is the emitter; if an IGBT with a P-channel structure is adopted, the first end pin of the IGBT is the emitter, and the second end pin of the IGBT is the collector.

[0072] The zero gear refers to that the main control unit 204 controls the first IGBT 201, the second IGBT 202, and the third IGBT 203 to be all cut off simultaneously.

[0073] The first gear refers to that the main control unit 204 controls any two of the first IGBT 201, the second IGBT 202, and the third IGBT 203 to be conducted simultaneously.

[0074] The second gear position means that the main control unit 204 controls any one of the first IGBT 201, the second IGBT 202, and the third IGBT 203 to conduct.

[0075] The third gear position means that the main control unit 204 controls the first IGBT 201, the second IGBT 202, and the third IGBT 203 to conduct simultaneously.

[0076] It can be understood that, as Figure 7 shown, the functional schematic diagram of the gear shifting device 200 on the cable is presented. The main control unit 204, as the control core of the entire system, can control the conduction and cut-off of the first IGBT, the second IGBT, and the third IGBT according to preset conditions (the temperature of the temperature detection unit 205).

[0077] It can be understood that, as Figure 7 shown, for example, the main control unit 204 can have a built-in temperature threshold setting function. When the temperature detected by the temperature detection unit 205 exceeds a certain set value, the main control unit 204 will correspondingly adjust the switching state of the IGBT to effectively control the temperature of the cable. For example, the preset temperature threshold is 60 °C. When the temperature detected by the temperature sensor is lower than 60 °C, it means that the current passing through the cable is small, and the first gear core is used. The main control unit 204 can control any one of the first IGBT 201, the second IGBT 202, and the third IGBT 203 to conduct, that is, use any one of the three branch cables; when the temperature exceeds the preset 60 °C and the current passing through the cable is large, the second gear core is used. The main control unit 204 can control any two of the first IGBT 201, the second IGBT 202, and the third IGBT 203 to conduct, that is, use any two of the three branch cables; when using the second gear position and the temperature still exceeds the preset 60 °C, then the third gear core is used. The main control unit 204 can control the first IGBT 201, the second IGBT 202, and the third IGBT 203 to all conduct, that is, use all of the three branch cables; when using the third gear position and the temperature still exceeds the preset 60 °C, then the zero gear core is used. Using the zero gear position means that the main control unit 204 can control the first IGBT 201, the second IGBT 202, and the third IGBT 203 to all disconnect, that is, use all of the three branch cables and disconnect the power connection of the entire cable..

[0078] It can be understood that, as Figure 7As shown, for another example, the main control unit 204 can be built with a temperature threshold setting function. When the temperature detected by the temperature detection unit 205 is lower than a certain set value, the main control unit 204 will correspondingly adjust the switching state of the IGBT to effectively control the temperature of the cable. For example, the preset temperature threshold is 50°C, and three branch cables are used. When the temperature detected by the temperature sensor is higher than 60°C, it indicates that the current passing through the cable is relatively large, and the power-on connections of the three branch cables need to be disconnected simultaneously. The main control unit 204 can control the first IGBT 201, the second IGBT 202, and the third IGBT 203 to all disconnect; when the temperature detected by the temperature sensor is higher than 50°C but lower than 60°C, it indicates that the current passing through the cable is appropriate, and the three branch cables continue to be used simultaneously. The main control unit 204 can continue to control the first IGBT 201, the second IGBT 202, and the third IGBT 203 to all conduct; when the temperature detected by the temperature sensor is lower than 50°C, it indicates that the current passing through the cable is relatively small, and the core of the cable can be reduced by one gear, that is, any two of the three branch cables are used. The main control unit 204 can control any two of the first IGBT 201, the second IGBT 202, and the third IGBT 203 to conduct; in the case of using two branch cables, when the temperature is still lower than the preset 50°C, it indicates that the current passing through the cable is relatively small, and the core of the cable can be reduced by one more gear, that is, any one of the three branch cables is used. The main control unit 204 can control any one of the first IGBT 201, the second IGBT 202, and the third IGBT 203 to conduct.

[0079] It can be understood that as Figure 8 shown, the display unit 206 can use a liquid crystal display (LCD) or a light-emitting diode display (LED). When using a liquid crystal display, it can clearly display multiple lines of text information, including the current temperature inside the cable and the usage status of each branch cable. The upper part of the display unit 206 shows the usage status of the first branch cable L1 101, the second branch cable L2 102, and the third branch cable L3 103, and the lower part of the display unit 206 shows the real-time temperature data inside the current cable. For example, when the third branch cable L3 103 is in a damaged state, a red flashing icon can be used to prompt the user on the display screen. When using a light-emitting diode display, different combinations of LED lights can be used to represent the status. The usage status can be distinguished by different display colors, including green indicating a normal power-on state, yellow indicating an idle state, and red indicating a damaged state.

[0080] It is understandable that during long-term operation, in order to ensure overall reliability, each component should also be self-checked regularly. For example, the main control unit 204 can start a self-check program, send a specific test signal to the IGBT to check whether the switching function of the IGBT is normal, and at the same time check the working status of the temperature detection unit 205 and the display unit 206. If any component fails, the main control unit 204 will also send the fault information to the display unit 206 for display and can send an alarm signal to the external maintenance system through the communication interface so that maintenance personnel can perform maintenance and replacement in a timely manner.

[0081] It is understandable that the PVC shell 110 not only plays a role in protecting the exposed area on the back of the gear adjustment device 200, but also has certain fire prevention, moisture prevention and anti-aging properties. In the design of the shell, heat dissipation holes or heat dissipation fins and other structures are added according to actual needs, so that while ensuring the protection performance, the heat generated during the operation of the cable can be effectively dissipated, further improving the stability and safety of the entire device. In terms of installation, the shell is designed with a structure that is convenient for disassembly and installation, so that when performing equipment maintenance and repair, maintenance personnel can easily open the shell and operate on the internal components.

[0082] Based on an intelligent cable with adjustable core gears of the present technical solution, two automatic adjustment methods applied to this intelligent cable are proposed.

[0083] Application method 1

[0084] An automatic core gear adjustment method is applied to an intelligent cable with adjustable core gears. See Figure 9 As shown, the automatic core gear adjustment method includes the following steps:

[0085] Step S110, the cable is powered on, so that the first branch cable L1, the second branch cable L2 and the third branch cable L3 are powered on simultaneously.

[0086] In this step, when the cable is connected to the circuit, the current flows in from the power supply cable 105, passes through the first ends of the first branch cable L1 101, the second branch cable L2 and the third branch cable L3 103 connected to it, then passes through each branch cable respectively, and finally flows out from the second ends of each branch cable and reaches the power consumption end through the power consumption cable 106.

[0087] Step S210, the temperature sensor detects the current temperature inside the cable.

[0088] In this step, the temperature detection unit is arranged on the insulating outer shells of the first branch cable L1, the second branch cable L2 and the third branch cable L3, and the temperature inside the cable is sensed by the temperature sensor inside it. The temperature sensor converts the temperature signal into an electrical signal and transmits the electrical signal to the main control unit so that the main control unit can perform subsequent gear adjustment operations according to the temperature situation.

[0089] Step S310, determine whether the current temperature inside the cable is lower than the threshold value T1. If so, enter step S410; if not, enter step S910.

[0090] In this step, after receiving the temperature signal transmitted by the temperature detection unit, the main control unit compares it with the preset temperature threshold value T1. If the temperature is lower than the threshold value T1 (assuming T1 is 50 °C), it means that the current passing through the cable is relatively small, and the core gear needs to be reduced to adapt to the power demand; if the temperature is not lower than the threshold value T1, it means that the current temperature of the cable is relatively high, and it may be necessary to maintain the current gear.

[0091] It can be understood that the threshold temperature T1 is the safe temperature of the cable. If it is lower than the threshold temperature T1, it means that the utilization rate of the cable core is not high, and the requirement for the cross-sectional area of the cable core can be further reduced.

[0092] Step S410, disconnect the power supply of the third branch cable L3 and keep the first branch cable L1 and the second branch cable L2 powered on.

[0093] In this step, according to the judgment result, the main control unit controls the third IGBT to turn off, so that the core of the third branch cable L3 is disconnected, and the current cannot pass through the third branch cable L3, while the first IGBT and the second IGBT remain in the conducting state, and the first branch cable L1 and the second branch cable L2 continue to be powered on, thus realizing the adjustment of the core gear.

[0094] It can be understood that, for example, when the temperature detected by the temperature sensor is lower than 50 °C of the threshold value T1, it means that when the current passing through the cable is relatively small, the core of one gear can be reduced, that is, any two of the three branch cables are used. The main control unit can control the first IGBT and the second IGBT to conduct and control the third IGBT to disconnect.

[0095] Step S510, determine whether the current temperature inside the cable is lower than the threshold value T1. If so, enter step S610; if not, enter step S110.

[0096] In this step, the temperature detection unit continues to detect the internal temperature of the cable and transmits the signal to the main control unit. The main control unit compares it with the threshold T1 again. If the temperature is still lower than the threshold T1, it indicates that the power requirement of the cable is further reduced and the core gear needs to be adjusted continuously. If the temperature is not lower than the threshold T1, it means that the power requirement of the cable has increased, and it is necessary to restore to the previous gear or further increase the gear. Therefore, return to step S110 to re-judge.

[0097] Step S610: Disconnect the power supply of the second branch cable L2 and keep the power supply of the first branch cable L1.

[0098] In this step, the main control unit controls the second IGBT to turn off, disconnecting the core of the second branch cable L2. At this time, only the first branch cable L1 is powered on, further reducing the core gear to better adapt to the lower power requirement.

[0099] It can be understood that when using two branch cables, when the temperature is still lower than 50°C of the preset threshold T1, it indicates that the current passing through the cable is small, and the core of one gear can be further reduced, that is, any one of the three branch cables can be used. The main control unit can control the first IGBT to conduct and control the second IGBT and the third IGBT to turn off.

[0100] Step S710: Determine whether the current internal temperature of the cable is lower than the threshold T1. If so, enter step S810; if not, enter step S410.

[0101] In this step, the internal temperature of the cable is detected again and compared with the threshold T1. If the temperature is lower than the threshold T1, it indicates that the current power transmission requirement of the cable is much lower than the requirement for the core to generate and dissipate heat. That is to say, the power-on of one branch cable is also lower than the safe temperature of the cable. Therefore, the current gear is appropriate, and enter step S810 to continue to maintain this state. If the temperature is not lower than the threshold T1, it means that the power requirement has increased, and it is necessary to restore to the state when the third branch cable L3 was disconnected before, that is, enter step S410.

[0102] Step S810: Keep the first branch cable L1 powered on.

[0103] In this step, the main control unit keeps the first IGBT conducting to ensure that the first branch cable L1 is continuously powered on to meet the current lower power requirement.

[0104] Step S910: Determine whether the current internal temperature of the cable is higher than the threshold T2. If so, enter step S1010; if not, enter step S110.

[0105] In this step, the main control unit compares the received temperature signal with the preset threshold value T2. If the temperature is higher than the threshold value T2, it indicates that the current passing through the cable is too large, which may cause the cable to overheat. Measures need to be taken to reduce the cable temperature to ensure the safety of the equipment and personnel, that is, enter step S1010 for power-off processing; if the temperature is not higher than the threshold value T2, it means that the current cable temperature is within a reasonable range, and the current state is continued, that is, return to step S110 to re-judge the temperature situation.

[0106] It can be understood that the threshold temperature T2 is the dangerous temperature of the cable. If it is higher than the threshold temperature T2, it means that the utilization rate of the cable core is overloaded, and the demand for increasing the cross-sectional area of the cable core can be further improved.

[0107] In step S1010, the cable is powered off, and the first branch cable L1, the second branch cable L2, and the third branch cable L3 are powered off simultaneously.

[0108] In this step, the main control unit controls the first IGBT, the second IGBT, and the third IGBT to be turned off simultaneously, so that the cores of the three branch cables are disconnected, and the current cannot pass through the cable, thereby realizing the power-off of the cable to avoid damage to the cable due to overheating.

[0109] It can be understood that the main control unit can have a built-in temperature threshold setting function. When the temperature detected by the temperature detection unit is lower than a certain set value, the main control unit will correspondingly adjust the switching state of the IGBT to effectively control the cable temperature. For example, the preset temperature threshold T1 is 50 °C, and three branch cables are used at the same time. When the temperature detected by the temperature sensor is higher than 60 °C of the threshold temperature T, it means that the current passing through the cable is large, and the power-on connections of the three branch cables need to be disconnected simultaneously. The main control unit can control the first IGBT, the second IGBT, and the third IGBT to be disconnected.

[0110] Application method two

[0111] A method for automatically adjusting the core gear, which is applied to an intelligent cable with adjustable core gears. See Figure 10 As shown, the method for automatically adjusting the core gear includes the following steps:

[0112] In step S120, the cable is powered on, and the first branch cable L1 is powered on.

[0113] In this step, when the cable is connected to the circuit, the current flows in from the power supply cable 105, passes through the first end of the first branch cable L1 connected to it, then passes through the first branch cable L1, and finally flows out from the second end of the first branch cable L1, and reaches the power consumption end through the power consumption cable 106.

[0114] It can be understood that the preset temperature threshold T2 is 60°C. When the temperature detected by the temperature sensor is lower than 60°C, it indicates that the current passing through the cable is small. In this case, the first gear core is used, and the main control unit can control the first IGBT to conduct and the second and third IGBTs to disconnect, that is, only the first branch cable L1 among the three branch cables is used.

[0115] Step S220: The temperature sensor detects the current temperature inside the cable.

[0116] In this step, the temperature detection unit is arranged on the insulation shells of the first branch cable L1, the second branch cable L2, and the third branch cable L3. The temperature inside the cable is sensed through the temperature sensor inside it. The temperature sensor converts the temperature signal into an electrical signal and transmits this electrical signal to the main control unit so that the main control unit can perform subsequent gear adjustment operations according to the temperature situation.

[0117] It can be understood that the main control unit can have a built-in temperature threshold setting function. When the temperature detected by the temperature detection unit exceeds a certain set value, the main control unit will correspondingly adjust the switching state of the IGBT to effectively control the cable temperature.

[0118] Step S320: Determine whether the current temperature inside the cable is higher than the threshold T2. If so, go to step S420; if not, go to step S120.

[0119] In this step, after receiving the temperature signal transmitted by the temperature detection unit, the main control unit compares it with the preset threshold T2. If the temperature is higher than the threshold T2 (assuming T2 is 60°C), it indicates that the current passing through the cable is large, which may cause the cable to overheat, and it is necessary to increase the core gear to meet the power demand; if the temperature is not higher than the threshold T2, it means that the current temperature of the cable is within a reasonable range, and the current gear is continued, that is, go to step S120 to re-determine the temperature situation.

[0120] It can be understood that the threshold temperature T2 is the dangerous temperature of the cable. Being higher than the threshold temperature T2 indicates that the core utilization rate of the cable is overloaded, and the demand for increasing the core cross-sectional area can be further improved.

[0121] Step S420: Make the first branch cable L1 and the second branch cable L2 energized simultaneously.

[0122] In this step, according to the judgment result, the main control unit controls the second IGBT to conduct, so that the core of the second branch cable L2 is connected. At this time, the first branch cable L1 and the second branch cable L2 are energized simultaneously, increasing the core cross-sectional area to meet a larger power demand.

[0123] It can be understood that when the temperature exceeds 60°C of the preset threshold temperature T2 and the current passing through the cable is large, the second-gear wire core is used. The main control unit can control the first IGBT and the second IGBT to conduct and control the third IGBT to disconnect, that is, only the first branch cable L1 and the second branch cable L2 in the three branch cables are used.

[0124] Step S520: Determine whether the current temperature inside the cable is higher than the threshold T2. If so, enter step S620; if not, enter step S420.

[0125] In this step, the temperature detection unit continues to detect the temperature inside the cable and transmits the signal to the main control unit. The main control unit compares it with the threshold T2 again. If the temperature is still higher than the threshold T2, it means that the power demand of the cable further increases and the wire core gear needs to be increased continuously; if the temperature is not higher than the threshold T2, it means that the power demand of the cable is within a reasonable range, and the current gear is maintained, that is, enter step S420 to re-determine the temperature situation.

[0126] Step S620: Energize the first branch cable L1, the second branch cable L2, and the third branch cable L3 simultaneously.

[0127] In this step, the main control unit controls the third IGBT to conduct according to the judgment result, so that the wire core of the third branch cable L3 is connected. At this time, the first branch cable L1, the second branch cable L2, and the third branch cable L3 are energized simultaneously, further increasing the cross-sectional area of the wire core to meet a greater power demand.

[0128] It can be understood that when using the second gear, if the temperature still exceeds 60°C of the preset threshold temperature T2, the third-gear wire core is used. The main control unit can control the first IGBT, the second IGBT, and the third IGBT to conduct, that is, all the branch cables in the three branch cables are used.

[0129] Step S720: Determine whether the current temperature inside the cable is higher than the threshold T2. If so, enter step S820; if not, enter step S620.

[0130] In this step, the temperature detection unit continues to detect the temperature inside the cable and transmits the signal to the main control unit. The main control unit compares it with the threshold T2 again. If the temperature is still higher than the threshold T2, it means that the power demand of the cable continues to increase and exceeds the range that the current wire core can bear, and special measures need to be taken (such as issuing an alarm and considering whether there is a fault in the cable); if the temperature is not higher than the threshold T2, it means that the power demand of the cable can be met under the current wire core configuration, and the current gear is maintained, that is, enter step S620 to re-determine the temperature situation.

[0131] Step S820: Cut off the power supply of the cable, causing the first branch cable L1, the second branch cable L2, and the third branch cable L3 to be powered off simultaneously.

[0132] In this step, the main control unit controls the first IGBT, the second IGBT, and the third IGBT to be turned off simultaneously, so that the cores of the three branch cables are disconnected, and the current cannot pass through the cable, thus achieving power-off of the cable. This step will be executed when the following two situations occur: One is that the cable temperature is too high and the temperature still cannot be effectively controlled after multiple gear adjustments. It may be due to a fault in the cable itself or an abnormal external environment. At this time, power-off is to prevent the cable from damaging the equipment or causing safety accidents due to overheating; the other is that when the main control unit receives an external power-off instruction (such as an emergency power-off signal from the power system or a power-off operation manually triggered by the user), the power-off operation will be executed to ensure the safety of the system.

[0133] It can be understood that when using the third gear, if the temperature still exceeds 60°C of the preset threshold temperature T2, the core of the zero gear is used. Using the zero gear means that the main control unit can control the first IGBT, the second IGBT, and the third IGBT to be all disconnected, that is, all the branch cables in the three branch cables are used, and the power connection of the entire cable is disconnected.

[0134] Those skilled in the art can understand that the drawings are only schematic diagrams of a preferred implementation scenario, and the modules or processes in the drawings are not necessarily essential for implementing this application. Those skilled in the art can understand that the modules in the device in the implementation scenario can be distributed in the device in the implementation scenario according to the description of the implementation scenario, or can be correspondingly changed and located in one or more devices different from this implementation scenario. The modules in the above implementation scenario can be combined into one module, or further split into multiple sub-modules.

[0135] The above serial numbers of this application are only for description and do not represent the advantages or disadvantages of the implementation scenarios. The above disclosure is only several specific implementation scenarios of this application. However, this application is not limited thereto, and any changes that can be thought of by those skilled in the art should fall within the protection scope of this application.

Claims

1. An intelligent cable with adjustable core positions, characterized in that, It includes a cable (100) and a gear shifting device (200); One end of the cable (100) is connected to the power supply end, and the other end of the cable (100) is connected to the power consumption end; Through the cable (100), power transmission from the power supply end to the power consumption end is achieved; The gear shifting device (200) is embedded on the cable (100) near the power supply end; The gear shifting device (200) is used to detect the temperature inside the cable (100) and adjust the core gear inside the cable (100) according to the detected temperature; The core gears include a zero gear, a first gear, a second gear, and a third gear; The cable (100) further includes a first branch cable L1 (101), a second branch cable L2 (102), a third branch cable L3 (103), a ground wire E (104), a power supply end cable (105), a power consumption end cable (106), and a polyvinyl chloride outer shell (110); The power supply end cable (105) is arranged on the left side of the cable (100), connected to the first ends of the first branch cable L1 (101), the second branch cable L2 (102), and the third branch cable L3 (103), and embedded inside the gear shifting device (200); The power consumption end cable (106) is arranged on the right side of the cable (100), connected to the second ends of the first branch cable L1 (101), the second branch cable L2 (102), and the third branch cable L3 (103); For the internal temperature of the cable (100) detected by the gear shifting device (200), when the internal temperature is within a preset range value, the first gear is used, that is, any one of the three branch cables is used; When the internal temperature exceeds the preset range value, the second gear is used, that is, any two of the three branch cables are used; When using the second gear and the internal temperature still exceeds the preset range value, the core of the third gear is used, that is, all of the three branch cables are used; When using the third gear and the internal temperature still exceeds the preset range value, the core of the zero gear is used; For the zero gear, the power connection of the cable (100) is disconnected through the gear shifting device (200).

2. The intelligent cable with adjustable core positions according to claim 1, characterized in that, The core cross-sectional area of the power supply end cable (105) is equal to the core cross-sectional area of the power consumption end cable (106); The core cross-sectional areas of the first branch cable L1 (101), the second branch cable L2 (102), and the third branch cable L3 (103) are one-third of the core cross-sectional area of the power supply end cable (105) or the power consumption end cable (106).

3. The intelligent cable with adjustable core positions according to claim 2, characterized in that, The first branch cable L1 (101), the second branch cable L2 (102), the third branch cable L3 (103), the ground wire E (104), the power supply end cable (105), and the power consumption end cable (106) are all composed of a wire core and an insulating outer shell.

4. The intelligent cable with adjustable core positions according to claim 3, characterized in that, The first branch cable L1 (101), the second branch cable L2 (102), and the third branch cable L3 (103) are included in the cable (100) in a manner of being intertwined and not intertwined with each other.

5. The intelligent cable with adjustable core positions according to claim 4, wherein, The gear shifting adjustment device (200) further includes a first IGBT (201), a second IGBT (202), a third IGBT (203), a main control unit (204), a temperature detection unit (205), and a display unit (206); The first IGBT (201) is disposed on the insulating outer shell of the first branch cable L1 (101). The first end pin and the second end pin of the first IGBT (201) are connected to the wire core of the first branch cable L1 (101). The wire core between the first end pin and the second end pin of the first IGBT (201) is disconnected. The gate pin of the first IGBT (201) is connected to the main control unit (204); The second IGBT (202) is disposed on the insulating outer shell of the second branch cable L2 (102). The first end pin and the second end pin of the second IGBT (202) are connected to the wire core of the second branch cable L2 (102). The wire core of the first end pin and the second end pin of the second IGBT (202) is disconnected. The gate pin of the second IGBT (202) is connected to the main control unit (204); The third IGBT (203) is disposed on the insulating outer shell of the third branch cable L3 (103). The first end pin and the second end pin of the third IGBT (203) are connected to the wire core of the third branch cable L3 (103). The wire core of the first end pin and the second end pin of the third IGBT (203) is disconnected. The gate pin of the third IGBT (203) is connected to the main control unit (204); The temperature detection unit (205) is disposed on the insulating outer shells of the first branch cable L1 (101), the second branch cable L2 (102), and the third branch cable L3 (103) for detecting the internal temperature of the cable (100); The display unit (206) is disposed on the surfaces of the first IGBT (201), the second IGBT (202), the third IGBT (203), the main control unit (204), and the temperature detection unit (205) for displaying the current gear state information; The gear state information includes the current real-time temperature of the cable (100), and the usage states of the first branch cable L1 (101), the second branch cable L2 (102), and the third branch cable L3 (103); The usage states include the powered-on state, the idle state, and the damaged state.

6. The intelligent cable with adjustable core positions according to claim 5, characterized in that, The zero gear position means that the main control unit controls the first IGBT (201), the second IGBT (202), and the third IGBT (203) to be all cut off simultaneously; The first gear position means that the main control unit controls any one of the first IGBT (201), the second IGBT (202), and the third IGBT (203) to be turned on; The second gear position means that the main control unit controls any two of the first IGBT (201), the second IGBT (202), and the third IGBT (203) to be turned on; The third gear position means that the main control unit controls the first IGBT (201), the second IGBT (202), and the third IGBT (203) to be all turned on simultaneously.

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