Charging cable system and charging control method thereof

Abstract

The invention provides a charging cable system and a charging control method thereof. The charging cable system comprises at least one cable assembly, a first controller, a cooling system and at least one second controller, one end of the cable assembly is connected with the energy storage device, and the other end of the cable assembly is connected with one charging pile; the first controller is fixed in the energy storage device, the first controller is connected with at least one cable assembly, and the first controller is further connected with the energy storage controller; the cooling system is fixed in the energy storage device, the cooling system is connected with at least one cable assembly, and the first controller is further connected with the cooling system; and one second controller is fixed in one charging pile, one second controller is connected with one cable assembly, and one second controller is also connected with the charging controller in one charging pile. The service life of the cable assembly is prolonged, the use safety of the cable assembly is improved, damage expansion of the cable assembly is avoided, and the service life of the cable assembly is prolonged.

Description

Technical Field

[0001] The present application relates to the field of cable technology, in particular to the field of installation of cables or wires, and more particularly to a charging cable system and a charging control method thereof. Background Art

[0002] Energy storage devices refer to the equipment or systems involved in the process of storing energy through media or equipment and releasing it when needed. Charging piles refer to charging devices that provide energy replenishment for new energy vehicles. Currently, a high-power cable is usually used to connect an energy storage device and a charging pile, so that the energy storage device can power multiple charging piles.

[0003] However, the inventors have found that current cables easily generate a large amount of heat when running at high power for a long time, causing the cables to be burned due to excessive temperature, resulting in a shorter service life of the cables and poor safety in use. Summary of the invention

[0004] The present application provides a charging cable system and a charging control method thereof, which are used to solve the problem that the current cables generate a large amount of heat when running at high power for a long time, causing the cables to be burned due to excessive temperature, resulting in a short service life of the cables and poor safety in use.

[0005] In a first aspect, the present application provides a charging cable system for connecting an energy storage device and at least one charging pile, wherein the energy storage device is used to store electric energy, and the charging pile is used to charge a new energy vehicle; The charging cable system includes: at least one cable assembly, a first controller, a cooling system and at least one second controller; One end of the cable assembly is connected to the energy storage device, and the other end of the cable assembly is connected to one of the charging piles; The first controller is fixed in the energy storage device, the first controller is connected to at least one of the cable assemblies, and the first controller is also connected to the energy storage controller; wherein the first controller is used to control the passage and disconnection of each of the cable assemblies through the energy storage controller according to the temperature information of each of the cable assemblies; the temperature information is used to characterize the temperature of the power line in the cable assembly; The cooling system is fixed in the energy storage device, the cooling system is connected to at least one of the cable assemblies, and the first controller is also connected to the cooling system; wherein the cooling system is used to output a coolant to each of the cable assemblies; the coolant is used to cool the cable assembly; One second controller is fixed in one of the charging piles, one second controller is connected to one of the cable assemblies, and one second controller is also connected to a charging controller in the charging pile; wherein, the second controller is used to control the passage and disconnection between the charging pile and the new energy vehicle through the charging controller according to the leakage information of the charging pile; the leakage information reflects the leakage degree of the charging pile.

[0006] In the above solution, the cable assembly includes: a composite cable, a first connector, and a second connector; The composite cable is used to transmit charging current, transfer communication signals, feedback temperature information of the cable assembly, receive coolant output by the cooling system, and output coolant to the cooling system; One end of the composite cable is connected to the first connector, and the first connector is connected to the output end of the energy storage device, the first controller and the cooling system; The other end of the composite cable is connected to the second connector, and the second connector is connected to the input end of the charging pile and the second controller.

[0007] In the above solution, the composite cable includes: a plurality of power lines, at least one temperature line, at least one communication line, a cooling input line, a cooling output line, a cable protective layer and an overall protective layer; The power line is used to output energy storage current, and a plurality of the power lines surround to form a ring structure; The temperature circuit is used to detect the temperature of the power circuit, and at least one of the temperature circuits is located inside the annular structure; The communication line is used to transmit communication signals, and at least one of the communication lines is located outside the ring structure; The cooling input line is wound around the outside of the ring structure; The cable protective layer is sleeved on the outside of the annular structure and the cooling input line; The cooling output circuit is located outside the cable protective layer; The overall protective layer is sleeved on the outside of the cable protective layer, the cooling output line and at least one of the communication lines.

[0008] In the above solution, the first connector includes: a plurality of first power terminals, at least one first temperature terminal, at least one first communication terminal, a coolant input port and a coolant output port; One of the first power terminals is connected to one end of one of the power lines; the first power terminal is used to be connected to the output end of the energy storage device; One of the first temperature terminals is connected to one end of one of the temperature circuits; the first temperature terminal is used to be connected to the first controller; One of the first communication terminals is connected to one end of the communication line; the first communication terminal is used to connect to the first controller; the first communication terminal is also used to connect to the energy storage controller of the energy storage device; The coolant input port is connected to the cooling input line, and the coolant input port is used to receive the coolant output by the cooling system; The coolant output port is connected to the cooling output line, and the coolant output port is used to output coolant to the cooling system.

[0009] In the above solution, the second connector includes: a plurality of second power terminals, at least one second temperature terminal, at least one second communication terminal, and two cooling liquid transfer ports; One of the second power terminals is connected to one end of the power line; the second power terminal is used to be connected to the input end of the charging pile; One of the second temperature terminals is connected to one end of one of the temperature circuits; the second temperature terminal is used to output an initial voltage to the temperature circuit; the temperature circuit outputs a temperature voltage to the first temperature terminal of the first connector according to the initial voltage; the temperature voltage is temperature information used to characterize the temperature conditions of multiple power circuits in the composite cable; One of the second communication terminals is connected to one end of the communication line; the second communication terminal is used to connect to the second controller and the charging controller of the charging pile; One of the coolant transfer ports is connected to the cooling input circuit, the other coolant transfer port is connected to the cooling output circuit, and the two coolant transfer ports are connected to each other.

[0010] In the above solution, the first controller includes: at least one temperature sensor and a first processor; One of the temperature sensors is connected to the first connector of the cable assembly; The temperature sensor is also connected to the first processor, and the temperature sensor is used to send temperature information of each cable assembly to the first processor; The first processor is connected to the energy storage controller, and the first processor is used to generate an energy storage path signal or an energy storage circuit breaker signal of each cable assembly according to the temperature information of each cable assembly; the first processor is also used to send the energy storage path signal and the energy storage circuit breaker signal to the energy storage controller; the energy storage path signal is used to instruct the energy storage controller to set the connection between the energy storage device and the cable assembly as a path; the energy storage circuit breaker signal is used to instruct the energy storage controller to set the connection between the energy storage device and the cable assembly as a circuit breaker; The first processor is also connected to the cooling system; The first processor is used to generate a cooling level signal for each cable assembly according to the temperature information of each cable assembly; the cooling system adjusts the flow rate of the coolant in each cable assembly according to the cooling level signal.

[0011] In the above solution, the cooling system includes: an input multi-tube joint, a compressor, a condenser, an output multi-tube joint, and at least one flow rate controller; The input multi-tube joint has at least one input port and one output port, one input port of the input multi-tube joint is connected to a coolant output port of a first connector of the cable assembly through a pipeline, and the output port of the input multi-tube joint is connected to the input port of the compressor; The output port of the compressor is connected to the input port of the condenser; The output multi-tube connector has at least one output port and one input port; The input port of the output multi-tube joint is connected to the output port of the condenser; one output port of the output multi-tube joint is connected to the coolant input port of the first connector of the cable assembly through a pipeline; One of the flow rate controllers is connected to the pipeline between the output multi-tube joint and the coolant inlet, and at least one of the flow rate controllers is connected to the first controller respectively; the flow rate controller is used to control the flow rate of the coolant in the pipeline between the output multi-tube joint and the coolant inlet.

[0012] In the above solution, the second controller includes: at least one leakage current sensor and a second processor; A power transmission loop of one of the cable assemblies passes through one of the leakage current sensors and is connected to the charging pile; wherein the power transmission loop is used to output charging current to the charging pile; the power transmission loop includes a power supply branch line and a return branch line, the power supply branch line is connected to a first power line in the cable assembly, and the return branch line is connected to a second power line in the cable assembly; the first power line is one of at least one power line in the cable assembly; the second power line is one of at least one power line in the cable assembly; the first power line and the second power line are different power lines; At least one leakage sensor is connected to the second processor respectively; the leakage sensor is used to detect leakage current in the power transmission circuit; The second processor is used to generate a charging path signal or a charging disconnection signal for each transmission circuit according to the leakage current of each transmission circuit; the second processor is also used to send the charging path signal and the charging disconnection signal to the charging controller; wherein the charging path signal is used to instruct the charging controller to set the connection between the charging pile and the new energy vehicle as a path; the charging disconnection signal is used to instruct the charging controller to set the connection between the charging pile and the new energy vehicle as a disconnection.

[0013] In a second aspect, the present application provides a charging control method for a charging cable system, comprising: The target first controller and the cooling system respectively respond to monitoring the start-up of the energy storage device, and the target second controller responds to the start-up of the first charging pile; wherein, the start-up of the energy storage device indicates that the energy storage device outputs a charging current to at least one charging pile; the first charging pile is one of at least one charging pile that receives a charging current; the target first controller is a first controller connected to the first charging pile; the target second controller is a second controller fixed to the first charging pile; the start-up of the first charging pile indicates that the first charging pile is connected to the new energy vehicle and outputs a charging current to the new energy vehicle; The target first controller receives first temperature information of a first cable assembly; wherein the first cable assembly is a cable assembly connected between the energy storage device and the first charging pile; the first temperature information is used to characterize the temperature of the power line in the first cable assembly; The target first controller generates an energy storage path signal or an energy storage circuit breaker signal according to the first temperature information, and sends the energy storage path signal or the energy storage circuit breaker signal to the energy storage controller of the energy storage device; wherein the energy storage path signal is used to instruct the energy storage controller to maintain the connection between the energy storage device and the first charging pile; the energy storage circuit breaker signal is used to instruct the energy storage controller to disconnect the connection between the energy storage device and the first charging pile; The cooling system generates the energy storage path signal in response to the target first controller, and the cooling system outputs cooling liquid to the first cable assembly; The target second controller generates the energy storage path signal in response to the target first controller, and the target second controller detects the leakage degree of the first charging pile to obtain first leakage information; The target second controller generates a charging path signal or a charging circuit breaker signal according to the first leakage information, and sends the charging path signal or the charging circuit breaker signal to the first charging controller of the first charging pile; wherein the first charging controller is used to control the path and circuit breaker between the first charging pile and the new energy vehicle; the charging path signal is used to instruct the first charging controller to maintain the connection between the first charging pile and the new energy vehicle; the charging circuit breaker signal is used to instruct the first charging controller to disconnect the connection between the first charging pile and the new energy vehicle.

[0014] In the above scheme, after the target first controller generates an energy storage path signal or an energy storage circuit breaker signal according to the first temperature information and sends the energy storage path signal or the energy storage circuit breaker signal to the energy storage controller of the energy storage device, the method further includes: If the target first controller determines that the number of cable assemblies that generate energy storage circuit breaker signals exceeds a preset energy storage circuit breaker threshold, the target first controller generates an energy storage stop signal and sends the energy storage stop signal to the energy storage controller; wherein the energy storage stop signal is used to instruct the energy storage controller to stop the operation of the energy storage device.

[0015] The present application provides a charging cable system and a charging control method thereof, which controls the on and off of the cable assembly according to the temperature information of the cable assembly by setting a first controller to avoid the cable assembly being burned due to excessive temperature, thereby improving the service life and safety of the cable assembly.

[0016] By connecting the first controller with the energy storage controller, when the number of cable assemblies exceeds the energy storage circuit breaker number due to the temperature exceeding the preset temperature, it indicates that there is a high probability that the energy storage device has an abnormality. Therefore, the first controller controls the energy storage device to stop through the energy storage controller, and then stops supplying power to all cable assemblies to avoid the expansion of damage to the cable assemblies.

[0017] By setting up a cooling system to output cooling liquid to each cable assembly, the cable assembly is cooled down to avoid damage of the cable assembly 1 due to overheating, thereby ensuring the safety of the cable assembly and prolonging the service life of the cable assembly.

[0018] By setting a second controller to control the charging controller to stop working and / or control the disconnection of the cable assembly according to the leakage degree of the charging pile, it is ensured that the charging pile will not injure the staff or damage the new energy vehicle due to leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0020] Figure 1 A schematic structural block diagram of a charging cable system provided in this application; Figure 2 A schematic structural block diagram of a cooling system in a charging cable system provided in the present application; Figure 3 A schematic diagram of the structure of a composite cable in a charging cable system provided in this application; Figure 4 A schematic diagram of the structure of a first connector in a charging cable system provided in the present application; Figure 5 A schematic diagram of the structure of a first connector in a charging cable system provided in the present application; Figure 6 A flowchart of Embodiment 2 of a charging cable system and a charging control method thereof provided by the present application; Figure 7 This is a flowchart of Example 3 of a charging cable system and a charging control method thereof provided in the present application.

[0021] Reference numerals: 1: Cable assembly; 2: First controller; 3: Cooling system; 4: Second controller; 5: Energy storage device; 6: Charging pile; 11: Composite cable; 12: first connector; 13: second connector; 111: Power lines; 112: Temperature circuit; 113: Communication line; 114: cooling input circuit; 115: cooling output circuit; 116: Cable protective layer; 117: Overall protective layer; 1111: Transmission lines; 1112: first insulating layer; 1121: temperature sensing line; 1122: second insulating layer; 1131: Communication line; 1132: third insulating layer; 1133: Anti-interference layer; 1161: Cable inner sheath; 1162: Cable shielding layer; 1163: Cable outer sheath; 1171: Overall inner sheath; 1172: Overall shielding layer; 1173: Overall outer sheath; 121: first power terminal; 122: first temperature terminal; 123: First communication terminal; 124: Coolant inlet; 125: Coolant outlet; 126: first connecting housing; 127: first locking device; 1261: first plug; 1262: first annular baffle; 1263: first signal protection connector; 1264: first sealing joint; 1271: first chuck; 1272: First bayonet; 131: second power terminal; 132: second temperature terminal; 133: Second communication terminal; 134: Coolant adapter; 135: second connecting housing; 136: second locking device; 1351: second plug; 1352: second annular baffle; 1353: Second signal protection connector; 1361: second chuck; 1362: Second bayonet; 21: Temperature sensor; 22: first processor; 31: Input multi-tube joint; 32: compressor; 33: condenser; 34: Output multi-tube joint; 35: flow rate controller; 41: leakage current sensor; 42: second processor; 51: Energy storage controller; 61: Charging controller.

[0022] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0023] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the embodiments of the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the embodiments of the present application as detailed in the appended claims.

[0024] The following specific embodiments are used to describe in detail the technical solutions of the embodiments of the present application and how the technical solutions of the embodiments of the present application solve the current problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0025] Example 1: Please refer to Figure 1-Figure 5 , the present application provides a charging cable system for connecting an energy storage device 5 and at least one charging pile 6, the energy storage device 5 is used to store electric energy, and the charging pile 6 is used to charge a new energy vehicle; The charging cable system comprises: at least one cable assembly 1, a first controller 2, a cooling system 3 and at least one second controller 4; One end of the cable assembly 1 is connected to the energy storage device 5, and the other end of the cable assembly 1 is connected to a charging pile 6; The first controller 2 is fixed in the energy storage device 5, and the first controller 2 is connected to at least one cable assembly 1, and the first controller 2 is also connected to the energy storage controller 51; wherein the first controller 2 is used to control the passage and disconnection of each cable assembly 1 through the energy storage controller 51 according to the temperature information of each cable assembly 1; the temperature information is used to characterize the temperature of the power line 111 in the cable assembly 1; The cooling system 3 is fixed in the energy storage device 5, the cooling system 3 is connected to at least one cable assembly 1, and the first controller 2 is also connected to the cooling system 3; wherein the cooling system 3 is used to output a coolant to each cable assembly 1; the coolant is used to cool the cable assembly 1; A second controller 4 is fixed in a charging pile 6, a second controller 4 is connected to a cable assembly 1, and a second controller 4 is also connected to a charging controller 61 in a charging pile 6; wherein, the second controller 4 is used to control the passage and disconnection between the charging pile 6 and the new energy vehicle through the charging controller 61 according to the leakage information of the charging pile 6; the leakage information reflects the leakage degree of the charging pile 6.

[0026] In this example, the first controller 2 is arranged to control the on and off of the cable assembly 1 according to the temperature information of the cable assembly 1 to avoid the cable assembly 1 being burned due to over-high temperature, thereby improving the service life and safety of the cable assembly 1.

[0027] By connecting the first controller 2 with the energy storage controller 51, when the number of cable assemblies 1 exceeds the energy storage circuit breaker number due to the temperature exceeding the preset temperature and the preset circuit breaker temperature, it means that there is a high possibility that the energy storage device has an abnormality. Therefore, the first controller 2 controls the energy storage device 5 to stop through the energy storage controller 51, and then stops supplying power to all cable assemblies 1, thereby avoiding the expansion of damage to the cable assemblies 1.

[0028] The cooling system 3 is provided to output cooling liquid to each cable assembly 1 so as to cool the cable assembly 1 and avoid damage of the cable assembly 1 due to overheating, thereby ensuring the safety of the cable assembly 1 and increasing the service life of the cable assembly 1.

[0029] By setting the second controller 4 to control the charging controller 61 to stop working and / or control the disconnection of the cable assembly 1 according to the leakage degree of the charging pile 6, it is ensured that the charging pile 6 will not injure the staff or damage the new energy vehicle due to leakage.

[0030] In a preferred embodiment, the cable assembly 1 comprises: a composite cable 11, a first connector 12, and a second connector 13; The composite cable 11 is used to transmit charging current, transfer communication signals, feedback temperature information of the cable assembly 1, receive coolant output by the cooling system 3, and output coolant to the cooling system 3; One end of the composite cable 11 is connected to the first connector 12, and the first connector 12 is connected to the output end of the energy storage device 5, the first controller 2 and the cooling system 3; The other end of the composite cable 11 is connected to the second connector 13 , and the second connector 13 is connected to the input end of the charging pile 6 and the second controller 4 .

[0031] In this example, the composite cable 11 is provided to transmit the communication signal while transmitting the circuit, and the temperature of the power line 111 is detected to avoid the composite cable 11 being damaged due to overheating.

[0032] By setting the first connector 12, it is ensured that the composite cable 11 can be firmly connected to the output end of the energy storage device 5, the first controller 2 and the cooling system 3, and by setting the second connector 13, it is ensured that the composite cable can be firmly connected to the input end of the charging pile 6 and the second controller 4.

[0033] In a preferred embodiment, the composite cable 11 includes: a plurality of power lines 111, at least one temperature line 112, at least one communication line 113, a cooling input line 114, a cooling output line 115, a cable protective layer 116 and an overall protective layer 117; The power line 111 is used to output energy storage current, and a plurality of power lines 111 surround to form a ring structure; The temperature line 112 is used to detect the temperature of the power line 111, and at least one temperature line 112 is located inside the ring structure; The communication line 113 is used to transmit communication signals, and at least one communication line 113 is located outside the ring structure; The cooling input line 114 is wound around the outside of the ring structure; The cable protection layer 116 is sleeved on the outside of the ring structure and the cooling input line 114; The cooling output line 115 is located outside the cable protection layer 116; The overall protective layer 117 is sleeved on the outside of the cable protective layer 116 , the cooling output line 115 and the at least one communication line 113 .

[0034] In this example, since the power line 111 outputs energy storage current, its current value is relatively large, so it is easy to cause the power line 111 to generate high temperature and malfunction. In this regard, the temperature generated by the power line 111 is monitored by setting the temperature line 112, and a resistance value or electromotive force used to characterize the temperature of the power line 111 is generated. If it is determined based on the resistance value or electromotive force that the temperature generated by the power line 111 exceeds the temperature threshold, the energy storage current in the power line 111 is cut off to ensure the safety of the power line 111 and the energy storage device, thereby ensuring the reliability of the energy storage battery pack in transmitting the energy storage current.

[0035] At the same time, since the electromagnetic strength of the power line 111 is relatively large, it is easy to affect the signal in the communication line 113. Therefore, a cable protective layer 116 is set to reduce the impact of the power line 111 on the communication signal in the communication line 113, ensuring that the controller can effectively control the device through the communication line 113.

[0036] Optionally, one or more of fiber filler, filling glue and glass fiber are filled between the overall protective layer 117 and the cable protective layer 116 .

[0037] Optionally, the power line 111 includes: a transmission line 1111 and a first insulating layer 1112; The first insulating layer 1112 is sleeved on the outside of the transmission line 1111; The first insulating layer 1112 is made of an insulating thermally conductive material; wherein the insulating thermally conductive material of the first insulating layer 1112 is one of silicone rubber, glass fiber reinforced resin and silicon nitride.

[0038] In this example, silicone rubber has excellent anti-aging properties and can resist the effects of high temperature, ultraviolet rays, ozone and oxidation. It is often used for cable insulation in high temperature environments. Its high temperature resistance is very good and it can work for a long time in high temperature environments above 150°C. Silicone rubber has better thermal conductivity than ordinary polymers. Some types of silicone rubber cables have good thermal conductivity, which helps to improve the heat dissipation effect of the cable.

[0039] Glass fiber reinforced resin has good anti-aging properties, especially in terms of temperature resistance, moisture resistance, and oxidation resistance. It can withstand the environmental pressure of long-term use. Glass fiber reinforced resin has good thermal conductivity, especially in the case of reinforced resin, which can improve the heat dissipation capacity of the cable.

[0040] Silicon nitride is a ceramic material with extremely high resistance to high temperatures, chemical corrosion and aging. Silicon nitride has very good thermal conductivity, which is much higher than common polymer materials, and can significantly improve the heat dissipation effect of the cable.

[0041] Therefore, by using insulating thermally conductive material as the first insulating layer 1112, it is beneficial to the heat dissipation of the power line 111, thereby reducing the problem of the power line 111 being deformed or melted due to the high temperature generated by the transmission line 1111, causing the power line 111 to short-circuit.

[0042] Optionally, the temperature circuit 112 includes: a temperature sensing line 1121 and a second insulating layer 1122; The temperature wire is one of a thermocouple wire, a thermistor wire, a fiber optic temperature sensing wire, a platinum resistance temperature wire, and a nickel-chromium-nickel-silicon thermocouple wire; The second insulating layer 1122 is sleeved on the outer side of the temperature sensing line 1121; The second insulating layer 1122 is made of insulating thermally conductive material.

[0043] In this example, the thermocouple wire is mainly used to connect the thermocouple electrodes, moving the cold end (free end) of the thermocouple from a high temperature or unstable environment to a place where the temperature is relatively stable and easy to measure, usually the instrument terminal in the control room. This can protect the cold end of the thermocouple from the influence of high temperature or unstable temperature, and improve the accuracy and stability of temperature measurement. The thermoelectric potential signal generated by the thermocouple is transmitted to the measuring instrument to ensure the integrity and accuracy of the signal. Since the thermocouple material is generally expensive and the distance from the temperature measurement point to the instrument is far, the use of thermocouple wire can save thermocouple materials and reduce costs.

[0044] Thermistor wire is mainly used to connect thermistor electrodes. The resistance of thermistor sensors is relatively large, so the resistance of the connecting wire and the contact resistance can be ignored. Therefore, thermistor sensors can be used in long-distance temperature measurement of up to several kilometers. Thermistor sensors can compensate for the humidity of certain components within a certain temperature range. For example, the moving coil in the moving coil meter head is wound with copper wire. When the temperature rises, the resistance increases, causing temperature error, which can be compensated by thermistor. For small current occasions, the thermistor sensor can be directly connected in series with the load to prevent overheating damage to protect the device; for large current occasions, it can be used to protect relays, transistor circuits, etc.

[0045] The optical fiber temperature sensing line is a new type of temperature sensor based on optical principles21. The use of the optical fiber temperature sensing line can realize real-time monitoring of temperature, detect abnormal temperature conditions in time, and improve production safety.

[0046] Platinum resistance temperature wire (usually refers to the connection wire of platinum thermal resistor) is usually used to connect platinum thermal resistor. The resistance value of platinum thermal resistor will change with the change of temperature. By measuring the voltage or current value on the platinum resistance temperature wire, the current temperature value can be calculated to achieve accurate temperature measurement. Platinum resistance temperature wire has the characteristics of high precision and good stability, and is widely used in instrument measurement, environmental detection and other fields.

[0047] Nickel-chromium-nickel-silicon thermocouple wire (K-type thermocouple wire) is a commonly used thermocouple wire. K-type thermocouple can measure high temperatures of 1000 degrees for a long time and 1200 degrees for a short time. It is suitable for occasions where higher temperatures need to be measured. The positive electrode of K-type thermocouple is a nickel-chromium alloy containing 10% chromium, and the negative electrode is a nickel-silicon alloy containing 3% silicon. It has good high-temperature oxidation resistance and can be used in oxidizing or neutral media.

[0048] The insulating thermal conductive material of the second insulating layer 1122 is one of silicone rubber, glass fiber reinforced resin and silicon nitride.

[0049] Therefore, by using insulating heat-conductive material as the second insulating layer 1122 , it is helpful for the temperature sensing line 1121 to collect the heat emitted by the power line 111 , thereby ensuring the accuracy of the temperature line 112 in collecting the temperature of the power line 111 .

[0050] In a preferred embodiment, the communication line 113 includes: a communication line 1131, a third insulating layer 1132 and an anti-interference layer 1133; The third insulating layer 1132 is sleeved on the outside of the communication line 1131; wherein the third insulating layer 1132 is made of polytetrafluoroethylene or fluoroplastic; The anti-interference layer 1133 is sleeved on the outside of the third insulating layer 1132; wherein the anti-interference layer 1133 is made of one or more of copper wire, tinned copper wire, and aluminum alloy wire; or the anti-interference layer 1133 is wrapped by a polyester sheath.

[0051] In this example, fluoroplastics (such as FEP, PFA, etc.) have extremely high temperature resistance, chemical resistance and anti-aging properties, and can be used for a long time in harsh environments, especially in extreme temperatures, radiation and chemical media. Fluoroplastics have very excellent electrical insulation properties and are often used in high-frequency, high-voltage or high-temperature cables. Fluoroplastics also have good thermal insulation properties and can maintain the thermal stability of cables in high-temperature environments and reduce heat transfer.

[0052] PTFE has excellent anti-aging properties and can be used for a long time in extreme environments such as high temperature, strong acid, strong alkali and ultraviolet rays. PTFE can withstand high temperatures up to 250°C and is not prone to aging. PTFE has excellent electrical insulation properties and is particularly suitable for applications with high voltage, high frequency or special electrical requirements. PTFE has very good thermal isolation properties and can effectively prevent heat transfer, especially in high temperature environments, PTFE can maintain the thermal stability of the cable.

[0053] Therefore, the third insulating layer 1132 is provided to prevent the temperature of the power line 111 from being transferred to the communication line 1131 and causing damage to the communication line 1131 .

[0054] The anti-interference layer 1133 is provided to prevent the electromagnetic interference of the energy storage current of the power line 111 from interfering with the communication signal in the communication line 1131, thereby ensuring the reliability of the communication signal.

[0055] Optionally, the cable protective layer 116 includes: a cable inner protective layer 1161, a cable shielding layer 1162 and a cable outer protective layer 1163; The cable inner sheath 1161 is made of epoxy resin; The cable shield 1162 is made of a braided mesh of tinned copper wires; The cable outer sheath 1163 is made of a polyurethane mixture.

[0056] Optionally, the overall protective layer 117 includes: an overall inner protective layer 1171, an overall shielding layer 1172 and an overall outer protective layer 1173; The overall inner sheath 1171 is made of epoxy resin; The overall shielding layer 1172 is made of a tinned copper wire braid; The integral outer sheath 1173 is made of a polyurethane mixture.

[0057] In this example, the cable inner sheath 1161 made of epoxy resin is a high-strength material that can provide reliable mechanical protection for the conductor, insulation layer and shielding layer inside the cable to prevent damage to the cable due to external mechanical stress (such as bending, extrusion or stretching). Epoxy resin has good insulation properties and can provide additional electrical isolation for the inner layer of the cable, reduce the risk of leakage, and improve the overall insulation strength of the cable. Epoxy resin has excellent moisture resistance and can effectively prevent water or moisture from penetrating into the cable, thereby avoiding the degradation of the insulation material due to moisture. Epoxy resin has good tolerance to a variety of chemicals (such as acids, alkalis, and oils) and can protect the cable from long-term stable operation in harsh chemical environments, especially in industrial occasions or marine environments. Epoxy resin can maintain stable physical and electrical properties over a wide temperature range and is suitable for environments with high temperatures or large temperature differences. By providing multi-faceted protection, the epoxy resin inner sheath can slow down the aging rate of the internal structure of the cable and improve the reliability and service life of the cable.

[0058] The cable shielding layer 1162 made of tinned copper wire braided mesh can block external electromagnetic interference (EMI) from entering the cable and protect the signal integrity of the cable transmission, especially for weak communication signals and high-frequency signals. At the same time, it can also suppress the leakage of internal signals in the cable to avoid interference with external equipment or systems. The copper wire braided mesh can guide the interference current through grounding, so that the interference signal can be safely discharged to the ground to ensure stable signal transmission. This is of great significance in industrial environments. The copper wire braided mesh also plays a certain mechanical protection role for the cable, which can enhance the strength and tensile strength of the cable and avoid damage caused by external forces. Tinning can improve the oxidation resistance and corrosion resistance of copper wire and extend the service life of the shielding layer and cable. In certain specific scenarios (such as flammable and explosive environments), the shielding layer can also effectively prevent static electricity accumulation, thereby reducing the risk of safety accidents caused by electrostatic discharge.

[0059] The cable sheath 1163 made of polyurethane (PUR) mixture has excellent wear resistance and tear resistance, and can effectively resist external mechanical damage (such as stretching, extrusion, abrasion, etc.), especially suitable for dynamic application environments (such as mobile cables or drag chain cables). The polyurethane outer sheath can resist the influence of ultraviolet rays (UV), ozone and harsh weather conditions, and will not easily age or degrade when used outdoors. PUR mixtures have strong tolerance to a variety of chemicals (such as oils, solvents, fuels, acids and alkalis), and are suitable for use in chemical plants or industrial environments. Polyurethane materials can maintain good flexibility and physical properties over a wide temperature range and are suitable for high and low temperature environments. PUR has good flexibility and resilience, and can maintain structural integrity even in the case of long-term bending or movement, and is not easy to break. It is very suitable for drag chain cables or cable systems that need to be moved frequently. The PUR outer sheath has excellent waterproof properties, which can effectively prevent moisture from entering the cable, and is particularly suitable for use in humid environments or underwater. Some PUR mixtures can achieve flame retardant properties through special formulations, which meet application scenarios with high safety requirements. By adjusting the formula, PUR can be environmentally friendly and low in toxicity, and better meet environmental protection and health and safety requirements in specific occasions.

[0060] In a preferred embodiment, the first connector 12 includes: a plurality of first power terminals 121, at least one first temperature terminal 122, at least one first communication terminal 123, a coolant input port 124 and a coolant output port 125; A first power terminal 121 is connected to one end of a power line 111; the first power terminal 121 is used to connect to the output end of the energy storage device 5; A first temperature terminal 122 is connected to one end of a temperature line 112; the first temperature terminal 122 is used to connect to the first controller 2; A first communication terminal 123 is connected to one end of a communication line 113; the first communication terminal 123 is used to connect to the first controller 2; the first communication terminal 123 is also used to connect to the energy storage controller 51 of the energy storage device 5; The coolant input port 124 is connected to the cooling input line 114, and the coolant input port 124 is used to receive the coolant output by the cooling system 3; The coolant output port 125 is connected to the cooling output line 115 , and the coolant output port 125 is used to output the coolant to the cooling system 3 .

[0061] Furthermore, the first connector 12 further includes: a first connecting housing 126 and a first locking device 127; A plurality of first power terminals 121, at least one first temperature terminal 122, at least one first communication terminal 123, a coolant input port 124 and a coolant output port 125 are respectively fixed on the first connection housing 126; The first locking device 127 is fixed on the first connecting housing 126 and the energy storage device 5 , and the first locking device 127 is used to detachably connect the first connecting housing 126 to the energy storage device 5 .

[0062] In this example, by providing a first power terminal 121 and connecting it to the output end of the energy storage device 5, the energy storage device 5 outputs the charging current to the power line 111 through the first power terminal 121; By setting the first temperature terminal 122 and connecting it to the first controller 2, the temperature information of the composite cable 11 is sent to the first controller 2; By setting the first communication terminal 123 , the first controller 2 and the energy storage controller 51 can receive the communication signal sent by the charging pile 6 , thereby meeting the communication requirements between the energy storage device 5 and the charging pile 6 .

[0063] By providing the coolant input port 124 and the coolant output port 125 , the cooling system 3 can output the coolant to the composite cable 11 and recover the heated coolant to circulate and cool the composite cable 11 .

[0064] Optionally, the first connection housing 126 includes: a first plug 1261, a first annular baffle 1262, two first signal protection connectors 1263 and two first sealing connectors 1264; One end of the first plug 1261 has a first power area, a plurality of first power terminals 121 are fixed on the first power area, and a first annular baffle 1262 is fixed on the first plug 1261 around the first power area; Two first signal protection connectors 1263 are fixed on the area outside the first power area of ​​the first plug 1261, the first temperature terminal 122 is fixed in one first signal protection connector 1263, and the first communication terminal 123 is fixed in the other first signal protection connector 1263; Two first sealing joints 1264 are fixed on one side of the first plug 1261 having the first annular baffle 1262 , the coolant inlet 124 is arranged in one first sealing joint 1264 , and the coolant outlet 125 is arranged in the other first sealing joint 1264 .

[0065] The first locking device 127 includes: a first chuck 1271 and a plurality of first clamping angles (not shown in the figure); the first chuck 1271 has a plurality of first clamping openings 1272, and a first clamping angle corresponds to a first clamping opening 1272; The first clamping angle is fixed on the energy storage device 5, the first clamping disk 1271 is fixed on the first plug 1261, and the first clamping angle passes through the first clamping slot 1272, so that the chamfer of the first clamping angle contacts the side surface of the first clamping disk 1271 away from the energy storage device 5, so that the first connecting shell 126 is detachably connected to the energy storage device 5.

[0066] In a preferred embodiment, the second connector 13 includes: a plurality of second power terminals 131, at least one second temperature terminal 132, at least one second communication terminal 133, and two cooling liquid transfer ports 134; A second power terminal 131 is connected to one end of a power line 111; the second power terminal 131 is used to connect to the input end of the charging pile 6; A second temperature terminal 132 is connected to one end of a temperature circuit 112; the second temperature terminal 132 is used to output an initial voltage to the temperature circuit 112; the temperature circuit 112 outputs a temperature voltage to the first temperature terminal 122 of the first connector 12 according to the initial voltage; the temperature voltage is temperature information used to characterize the temperature conditions of the multiple power circuits 111 in the composite cable 11; A second communication terminal 133 is connected to one end of a communication line 113; the second communication terminal 133 is used to connect to the second controller 4 and the charging controller 61 of the charging pile 6; One coolant transfer port 134 is connected to the cooling input line 114 , and the other coolant transfer port 134 is connected to the cooling output line 115 . The two coolant transfer ports 134 are connected to each other.

[0067] Furthermore, the second connector 13 further includes: a second connecting housing 135 and a second locking device 136; At least one second power terminal 131, at least one second temperature terminal 132, and at least one communication and two cooling liquid transfer ports 134 are respectively fixed on the second connection housing 135; The second locking device 136 is fixed on the second connection housing 135 and the charging pile 6 , and the second locking device 136 is used to make the second connection housing 135 and the charging pile 6 detachably connected.

[0068] In this example, the second power terminal 131 is used to output charging current to the charging pile 6; the temperature line 112 has a resistor, and the second temperature terminal 132 is used to send a temperature voltage to the first temperature terminal 122 according to the initial voltage, and the voltage value of the temperature voltage represents the temperature of the power line 111 in the composite cable 11. The temperature change of the power line 111 will cause the temperature change of the temperature line 112, and the temperature line 112 will cause its resistance to change with the change of temperature, and then the temperature line 112 will cause the voltage value of the temperature voltage sent to the first controller 2 to change due to its resistance change, thereby achieving the technical effect of real-time detection of the temperature of the power line 111.

[0069] By setting the second communication terminal 133 and connecting it to the second controller 4, the second controller 4 can output a communication signal to the first controller 2 through the communication line 113, so that the first controller 2 can control the on and off of the charging controller 61 through the second controller 4; and the charging controller 61 can send a communication signal to the energy storage controller 51 through the communication line 113, so that the energy storage controller 51 can control the stopping and running of the charging pile 6 through the charging controller 61.

[0070] The coolant input line and the coolant output line are connected through the coolant transfer interface 134, so that the coolant input line and the coolant output line can form a loop on the coolant transfer interface 134. Therefore, workers can cut the composite cable 11 to the required length as needed, and connect the coolant input line and the coolant output line in the composite cable 11 into a loop on the second connector 13, thereby ensuring the convenience of using the composite cable 11.

[0071] Optionally, the second connection housing 135 includes: a second plug 1351, a second annular baffle 1352, two second signal protection connectors 1353 and a second sealing transfer tube (not shown in the figure); One end of the second plug 1351 has a second power area, a plurality of second power terminals 131 are fixed on the second power area, and a second annular baffle 1352 is fixed on the second plug 1351 around the second power area; Two second signal protection connectors 1353 are fixed on the area outside the second power area of ​​the second plug 1351, the second temperature terminal 132 is fixed in one second signal protection connector 1353, and the second communication terminal 133 is fixed in the other second signal protection connector 1353; Two ends of the two second sealing transfer tubes are connected to the two coolant transfer ports 134 respectively.

[0072] The second locking device 136 includes: a second chuck 1361 and a plurality of second clamping angles (not shown in the figure); the second chuck 1361 has a plurality of second clamping openings 1362, and one second clamping angle corresponds to one second clamping opening 1362; The second clamping angle is fixed on the charging pile 6, the second clamping disc 1361 is fixed on the second plug 1351, and the second clamping angle passes through the second clamping opening 1362, so that the chamfer of the second clamping angle contacts the side surface of the second clamping disc 1361 away from the charging pile 6, so that the second connecting shell 135 is detachably connected to the charging pile 6.

[0073] In a preferred embodiment, the first controller 2 includes: at least one temperature sensor 21 and a first processor 22; A temperature sensor 21 is connected to a first connector of a cable assembly 1; The temperature sensor 21 is also connected to the first processor 22, and the temperature sensor 21 is used to send the temperature information of each cable assembly 1 to the first processor 22; The first processor 22 is connected to the energy storage controller 51, and the first processor 22 is used to generate an energy storage path signal or an energy storage circuit breaker signal of each cable assembly 1 according to the temperature information of each cable assembly 1; the first processor 22 is also used to send the energy storage path signal and the energy storage circuit breaker signal to the energy storage controller 51; the energy storage path signal is used to instruct the energy storage controller 51 to set the connection between the energy storage device 5 and the cable assembly 1 as a path; the energy storage circuit breaker signal is used to instruct the energy storage controller 51 to set the connection between the energy storage device 5 and the cable assembly 1 as a circuit breaker; The first processor 22 is also connected to the cooling system 3; The first processor 22 is used to generate a cooling level signal for each cable assembly 1 according to the temperature information of each cable assembly 1; the cooling system 3 adjusts the flow rate of the coolant in each cable assembly 1 according to the cooling level signal.

[0074] In this example, by setting up a temperature sensor 21, the temperature information (temperature voltage) sent by the temperature line 112 is forwarded to the first processor 22. The first processor 22 determines whether the temperature of the power line 111 of the composite cable 11 exceeds the preset temperature tripping threshold value based on the temperature information; if the temperature threshold value is exceeded, it means that the temperature of the composite cable 11 is too high and needs to be disconnected in time to ensure the safety of the cable.

[0075] If the temperature threshold is not exceeded, it means that the temperature of the composite cable 11 does not need to be disconnected; the first processor 22 determines the cooling level signal of the composite cable 11 based on the temperature information, and the cooling level signal reflects the flow rate of the coolant in the composite cable 11, so as to ensure that the flow rate of the coolant in each composite cable 11 can stably cool the power line 111 therein, and ensure that the power of the cooling system 3 can be reasonably allocated according to the actual use of each composite cable 11, thereby ensuring the reasonable configuration of the flow rate of the coolant in all composite cables 11, and ensuring the cooling efficiency of the cable assembly 1 while reducing the operating power of the cooling system 3.

[0076] In a preferred embodiment, the cooling system 3 comprises: an input manifold 31, a compressor 32, a condenser 33, an output manifold 34, and at least one flow rate controller 35; The input multi-tube joint 31 has at least one input port and one output port, one input port of the input multi-tube joint 31 is connected to the coolant output port 125 of the first connector 12 of a cable assembly 1 through a pipeline, and the output port of the input multi-tube joint 31 is connected to the input port of the compressor 32; The output port of the compressor 32 is connected to the input port of the condenser 33; The output multi-tube connector 34 has at least one output port and one input port; The input port of the output multi-tube joint 34 is connected to the output port of the condenser 33; one output port of the output multi-tube joint 34 is connected to the coolant input port 124 of the first connector 12 of a cable assembly 1 through a pipeline; A flow rate controller 35 is connected to the pipeline between the output multi-tube joint 34 and the coolant input port 124, and at least one flow rate controller 35 is connected to the first controller 2 respectively; the flow rate controller 35 is used to control the flow rate of the coolant in the pipeline between the output multi-tube joint 34 and the coolant input port 124.

[0077] In this example, an input multi-tube joint 31 and an output multi-tube joint 34 are provided to provide power for the flow of the coolant by providing a compressor 32, and a condenser 33 is provided to dissipate heat from the coolant recovered from the composite cable 11 to reduce the temperature of the coolant. By providing the input multi-tube joint 31 and the output multi-tube joint 34, the cooling input lines 114 and the cooling output lines 115 of multiple composite cables 11 are integrated to minimize the complexity of the connection between the composite cable 11 and the cooling system 3. The flow rate controller 35 is provided to adjust the flow rate of the coolant in the composite cable 11, thereby achieving the technical effect of targeted adjustment of the cooling rate of the composite cable 11.

[0078] In a preferred embodiment, the second controller 4 includes: at least one leakage current sensor 41 and a second processor 42; A power transmission circuit of a cable assembly 1 passes through a leakage current sensor 41 and is connected to the charging pile 6; wherein the power transmission circuit is used to output charging current to the charging pile 6; the power transmission circuit includes a power supply branch line and a return branch line, the power supply branch line is connected to the first power line 111 in the cable assembly 1, and the return branch line is connected to the second power line 111 in the cable assembly 1; the first power line 111 is one of at least one power line 111 in the cable assembly 1; the second power line 111 is one of at least one power line 111 in the cable assembly 1; the first power line 111 and the second power line 111 are different power lines 111; At least one leakage sensor is connected to the second processor 42 respectively; the leakage sensor is used to detect leakage current in the power transmission circuit; The second processor 42 is used to generate a charging path signal or a charging disconnection signal for each transmission circuit according to the leakage current value of the leakage current of each transmission circuit; the second processor 42 is also used to send the charging path signal and the charging disconnection signal to the charging controller 61; wherein, the charging path signal is used to instruct the charging controller 61 to set the connection between the charging pile 6 and the new energy vehicle as a path; the charging disconnection signal is used to instruct the charging controller 61 to set the connection between the charging pile 6 and the new energy vehicle as a disconnection.

[0079] The second processor 42 is connected to the first processor 22 of the first controller 2 via the communication line 113 of the cable assembly 1, the second processor 42 sends a charging disconnection signal to the first processor 22, and the first processor 22 sends a charging disconnection signal to the energy storage controller 51 of the energy storage device 5; In this example, a leakage current sensor 41 is provided to detect whether leakage occurs in the power transmission circuit and whether the leakage occurs within an acceptable range, thereby ensuring the equipment safety of the charging pile 6, the safety of the charged new energy vehicle, and the personal safety of the user.

[0080] By setting the second processor 42, if it is determined that the leakage current exceeds the charging leakage threshold but does not exceed the charging power-off threshold, leakage information is generated, which indicates that the charging pile 6 may have a small leakage point and should temporarily stop working. Therefore, the second processor 42 sends the leakage information to the charging controller 61 to control the charging controller 61 to stop charging the new energy vehicle.

[0081] If the second processor 42 determines that the leakage current exceeds the charging power-off threshold, it generates a power-off signal, which indicates that the leakage of the charging pile 6 is very serious and the energy storage device 5 should suspend outputting the charging current to the charging pile 6; therefore, the second processor 42 sends a power-off signal to the first processor 22 of the first controller 2 through the communication line 113 of the cable assembly 1, and the first processor 22 sends a power-off signal to the energy storage controller 51 of the energy storage device 5, so that the power-off signal stops outputting the charging current to the charging pile 6 that sends the power-off signal, thereby fundamentally ensuring the safety of the charging pile 6, as well as the new energy vehicles and personnel around the charging pile 6.

[0082] In this embodiment, the power supply branch line and the return branch line of the power transmission circuit will generate magnetic fields in opposite directions on the leakage current sensor 41, and the change of the magnetic field is used to detect the magnitude of the current.

[0083] When the insulation between the power supply branch and the return branch is normal, the currents flowing through the sensor are equal in magnitude and opposite in direction, so the output signal of the leakage current sensor 41 is zero.

[0084] When the insulation between the power supply branch and the return branch is abnormal, the magnetic fields of the power supply branch and the return branch will be different. Therefore, a differential current will flow through the leakage current sensor 41, and the output signal will not be zero. According to the preset output leakage current mapping table, the leakage current value corresponding to the output signal is obtained, and the leakage current value is used to characterize the leakage degree of the charging pile 6.

[0085] Example 2: Please refer to Figure 1-Figure 6 , the present application provides a charging control method for a charging cable system, comprising: S101: The target first controller 2 and the cooling system 3 respectively respond to monitoring the start-up of the energy storage device 5, and the target second controller 4 responds to the start-up of the first charging pile 6; wherein, the start-up of the energy storage device 5 indicates that the energy storage device 5 outputs a charging current to at least one charging pile 6; the first charging pile 6 is one of the at least one charging pile 6 that receives the charging current; the target first controller 2 is the first controller 2 connected to the first charging pile 6; the target second controller 4 is the second controller 4 fixed to the first charging pile 6; the start-up of the first charging pile 6 indicates that the first charging pile 6 is connected to the new energy vehicle and outputs a charging current to the new energy vehicle.

[0086] S102: The target first controller 2 receives first temperature information of the first cable assembly 1; wherein the first cable assembly 1 is the cable assembly 1 connected between the energy storage device 5 and the first charging pile 6; the first temperature information is used to characterize the temperature of the power line 111 in the first cable assembly 1.

[0087] S103: The target first controller 2 generates an energy storage path signal or an energy storage circuit breaker signal according to the first temperature information, and sends the energy storage path signal or the energy storage circuit breaker signal to the energy storage controller 51 of the energy storage device 5; wherein, the energy storage path signal is used to instruct the energy storage controller 51 to maintain the connection between the energy storage device 5 and the first charging pile 6; the energy storage circuit breaker signal is used to instruct the energy storage controller 51 to disconnect the connection between the energy storage device 5 and the first charging pile 6.

[0088] S106 : the cooling system 3 generates an energy storage path signal in response to the target first controller 2 , and the cooling system 3 outputs coolant to the first cable assembly 1 .

[0089] S107: The target second controller 4 generates an energy storage path signal in response to the target first controller 2, and the target second controller 4 detects the leakage degree of the first charging pile 6 to obtain first leakage information.

[0090] S108: The target second controller 4 generates a charging path signal or a charging disconnection signal according to the first leakage information, and sends the charging path signal or the charging disconnection signal to the first charging controller 61 of the first charging pile 6; wherein the first charging controller 61 is used to control the path and disconnection between the first charging pile 6 and the new energy vehicle; the charging path signal is used to instruct the first charging controller 61 to maintain the connection between the first charging pile 6 and the new energy vehicle; the charging disconnection signal is used to instruct the first charging controller 61 to disconnect the connection between the first charging pile 6 and the new energy vehicle.

[0091] Example 3: Please refer to Figure 1-Figure 5 ,as well as Figure 7 , the present application provides a charging control method for a charging cable system, comprising: S201: The target first controller 2 and the cooling system 3 respectively respond to monitoring the start-up of the energy storage device 5, and the target second controller 4 responds to the start-up of the first charging pile 6; wherein, the start-up of the energy storage device 5 indicates that the energy storage device 5 outputs a charging current to at least one charging pile 6; the first charging pile 6 is one of the at least one charging pile 6 that receives the charging current; the target first controller 2 is the first controller 2 connected to the first charging pile 6; the target second controller 4 is the second controller 4 fixed to the first charging pile 6; the start-up of the first charging pile 6 indicates that the first charging pile 6 is connected to the new energy vehicle and outputs a charging current to the new energy vehicle.

[0092] In this step, by setting the response time point of the target first controller 2 and the cooling system 3 to when the energy storage device 5 is started, the target first controller 2 and the cooling system 3 only work when the energy storage device 5 charges the new energy vehicle through the charging pile 6, which greatly reduces the working energy consumption of the charging cable system.

[0093] By setting the response time point of the target second controller 4 to when the first charging pile 6 is started, it is avoided that the charging pile 6 that is not started sends a signal, which causes the energy storage controller 51 of the energy storage device 5 to have an excessive computational burden.

[0094] S202: The target first controller 2 receives first temperature information of the first cable assembly 1; wherein the first cable assembly 1 is the cable assembly 1 connected between the energy storage device 5 and the first charging pile 6; the first temperature information is used to characterize the temperature of the power line 111 in the first cable assembly 1.

[0095] In this step, the target first controller 2 receives the first temperature information of the first cable assembly 1 to achieve the technical effect of real-time monitoring of the temperature of the cable assembly 1 .

[0096] S203: The target first controller 2 generates an energy storage path signal or an energy storage circuit breaker signal according to the first temperature information, and sends the energy storage path signal or the energy storage circuit breaker signal to the energy storage controller 51 of the energy storage device 5; wherein, the energy storage path signal is used to instruct the energy storage controller 51 to maintain the connection between the energy storage device 5 and the first charging pile 6; the energy storage circuit breaker signal is used to instruct the energy storage controller 51 to disconnect the connection between the energy storage device 5 and the first charging pile 6.

[0097] In this step, if the first cable assembly 1 does not have a risk of high temperature damage, an energy storage path signal is generated and sent to the energy storage controller 51 , so that the energy storage device 5 can continuously output charging current to the first charging pile 6 .

[0098] If the first cable assembly 1 has a risk of being damaged by high temperature, an energy storage disconnection signal is generated and sent to the energy storage controller 51, so that the energy storage device 5 is disconnected from the first charging pile 6. Avoid outputting charging current to the cable assembly 1 which has the risk of being damaged by high temperature, thereby causing damage to the cable assembly 1.

[0099] Specifically, the target first controller 2 generates an energy storage path signal or an energy storage disconnection signal according to the first temperature information, including: If the target first controller 2 determines that the first temperature information does not exceed the preset temperature trip threshold, it generates an energy storage path signal; the target first controller 2 obtains the first cooling level corresponding to the first temperature information from the preset temperature level mapping table, and generates a first cooling level signal according to the first cooling level; If the target first controller 2 determines that the first temperature information exceeds a preset temperature trip threshold, it generates an energy storage trip signal.

[0100] S204: If the target first controller 2 determines that the number of cable assemblies 1 that generate energy storage circuit breaker signals exceeds a preset energy storage circuit breaker threshold, the target first controller 2 generates an energy storage stop signal and sends the energy storage stop signal to the energy storage controller 51; wherein the energy storage stop signal is used to instruct the energy storage controller 51 to stop the operation of the energy storage device 5.

[0101] In this step, if the number of energy storage circuit breaker signals is too large, it means that there are too many cable assemblies 1 with too high temperature, which further indicates that the current cable assemblies 1 need to be replaced collectively, or defects such as excessive charging current output by the energy storage device 5 need to be repaired, so as to ensure the safety of the charging system composed of the energy storage device 5 and the charging pile 6. Therefore, in this step, when it is determined that the number of cable assemblies 1 that generate energy storage path signals exceeds the preset energy storage circuit breaker threshold, the target first controller 2 generates an energy storage stop signal and sends the energy storage stop signal to the energy storage controller 51, thereby limiting the problem of large-scale cable collapse and / or excessive charging current output by the energy storage device 5 caused by a large number of power lines 111 of the cable assembly 1 failing to pass the test, thereby ensuring the safety of the energy storage device 5, the charging cable system and the charging pile 6.

[0102] S205: The target first controller 2 generates a first cooling level signal according to the first temperature information, and sends the first cooling level signal to the cooling system 3; wherein the first cooling level signal defines the flow rate of the coolant output by the cooling system 3 to the first cable assembly 1.

[0103] In this step, a first cooling level signal is generated according to the first temperature information to define the flow rate of the coolant in the first cable assembly 1, and coolant with different flow rates is input into the cable assemblies 1 with different temperatures to ensure that the temperature of each cable assembly 1 can be effectively controlled.

[0104] S206 : The cooling system 3 generates an energy storage path signal in response to the target first controller 2 , and the cooling system 3 outputs coolant to the first cable assembly 1 .

[0105] In this step, the cooling system 3 generates an energy storage path signal in response to the target first controller 2, so that the cooling liquid is output to the first cable assembly 1 only when the first cable assembly 1 starts to transmit the charging current to the charging pile 6. This avoids the cooling system 3 outputting coolant to the non-working cable assembly 1, resulting in high energy consumption of the cooling system 3.

[0106] Specifically, the cooling system 3 outputs the cooling liquid to the first cable assembly 1, including: The cooling system 3 determines the gear level of the flow rate controller 35 of the cooling system 3 according to the first cooling level signal; wherein the gear level defines the flow rate of the coolant at the output end of the flow rate controller 35; The compressor 32 of the cooling system 3 is started, and the coolant is output to the first cable assembly 1 through the flow rate controller 35 which determines the gear level.

[0107] S207: The target second controller 4 generates an energy storage path signal in response to the target first controller 2, and the target second controller 4 detects the leakage degree of the first charging pile 6 to obtain first leakage information.

[0108] In this step, the leakage condition of the first charging pile 6 is detected to identify the safety of the first charging pile 6 .

[0109] Specifically, the target second controller 4 detects the leakage degree of the first charging pile 6 and obtains the first leakage information, including: The target second controller 4 detects the difference between the electromagnetic strength of the power supply branch line and the electromagnetic strength of the return branch line to obtain an electromagnetic difference; the electromagnetic difference represents the leakage degree of the first charging pile 6; The target second controller 4 determines the leakage current value corresponding to the electromagnetic difference according to the preset electromagnetic leakage mapping table, and uses the obtained leakage current value as the first leakage information.

[0110] S208: The target second controller 4 generates a charging path signal or a charging circuit breaker signal according to the first leakage information, and sends the charging path signal or the charging circuit breaker signal to the first charging controller 61 of the first charging pile 6; wherein the first charging controller 61 is used to control the path and circuit breaker between the first charging pile 6 and the new energy vehicle; the charging path signal is used to instruct the first charging controller 61 to maintain the connection between the first charging pile 6 and the new energy vehicle; the charging circuit breaker signal is used to instruct the first charging controller 61 to disconnect the connection between the first charging pile 6 and the new energy vehicle.

[0111] In this step, the target second controller 4 determines the leakage degree of the first charging pile 6 according to the first leakage information, and judges whether the first charging pile 6 can continue to work based on the leakage degree; if it can continue to work, a charging path signal is generated to maximize the use of the current charging pile 6 and improve the charging efficiency of a large number of new energy vehicles; if it cannot continue to work, a charging disconnection signal is generated to avoid new energy vehicles and users from causing damage to personal or vehicle equipment when using the charging pile 6.

[0112] Specifically, the target second controller 4 generates a charging path signal or a charging disconnection signal according to the first leakage information, including: The target second controller 4 generates a charging path signal if it determines that the first leakage information does not exceed the preset charging leakage threshold; If the target second controller 4 determines that the first leakage information exceeds the charging leakage threshold, it generates a charging disconnection signal; the target second controller 4 also sends the charging disconnection signal to the target first controller 2 through the first cable assembly 1, and the target first controller 2 generates an overhaul alarm message according to the charging disconnection signal; the overhaul alarm message records the location information and equipment information of the charging pile 6 where the target second controller 4 that generates the restricted charging indication signal is located.

[0113] Furthermore, if the target second controller 4 determines that the first leakage information does not exceed the preset charging leakage threshold, after generating the charging path signal, the method further includes: If the target second controller 4 determines that the first leakage information does not exceed the preset defect leakage threshold, it generates a full-function charging indication signal and sends the full-function charging indication signal to the charging controller 61 and the target first controller 2; wherein the full-function charging indication signal is used to indicate that the charging controller 61 can realize all charging functions for the new energy vehicle; If the target second controller 4 determines that the first leakage information exceeds the defect leakage threshold, it generates a limited charging indication signal and sends the limited charging indication signal to the charging controller 61 and the target first controller 2; wherein the limited charging indication signal is used to instruct the charging controller 61 to implement a partial charging function for the new energy vehicle; The target first controller 2 generates maintenance alarm information according to the charging restriction indication signal; wherein the maintenance alarm information records the location information and device information of the charging pile 6 where the target second controller 4 generating the charging restriction indication signal is located.

[0114] In this example, the charging controller 61 is connected to the charging pile 6 and the new energy vehicle, and is provided with multiple charging functions, such as: supercharging function, fast charging function and slow charging function; the supercharging function, fast charging function and slow charging function are divided according to the charging speed and power. The power of supercharging is above 240kW, and the power battery can be charged to 80% in 40 minutes, and the power battery can be fully charged in 80 minutes. The power of fast charging is between 60~129kW, and the power battery can be charged to about 80% in 30~60 minutes; the power of slow charging is between 3~7kW, and it takes 8~10 hours to fully charge the power battery.

[0115] When the target second controller 4 generates a full-function indication charging signal, the charging controller 61 will allow the charging pile 6 to implement the super charging function, the fast charging function and the slow charging function for the new energy vehicle.

[0116] When the target second controller 4 generates a restriction indication charging signal, the charging controller 61 will only allow the charging pile 6 to realize the slow charging function for the Western Energy Vehicle, but not the super charging function and the fast charging function, so as to reduce the leakage of the charging pile 6 and avoid further damage to the insulation of the charging pile 6.

[0117] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0118] Those skilled in the art will readily come to other embodiments of the present application embodiments after considering the specification and practicing the invention disclosed herein. The present application embodiments are intended to cover any variations, uses or adaptations of the present application embodiments, which follow the general principles of the present application embodiments and include common knowledge or customary technical means in the art that are not disclosed in the present application embodiments. The specification and embodiments are intended to be exemplary only, and the true scope and spirit of the present application embodiments are indicated by the following claims.

[0119] It should be understood that the embodiments of the present application are not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the embodiments of the present application is limited only by the appended claims.

Claims

1. A charging cable system, characterized in that: Used to connect an energy storage device and at least one charging pile, the energy storage device is used to store electric energy, and the charging pile is used to charge new energy vehicles; The charging cable system includes: at least one cable assembly, a first controller, a cooling system and at least one second controller; One end of the cable assembly is connected to the energy storage device, and the other end of the cable assembly is connected to one of the charging piles; The first controller is fixed in the energy storage device, the first controller is connected to at least one of the cable assemblies, and the first controller is also connected to the energy storage controller; wherein the first controller is used to control the passage and disconnection of each of the cable assemblies through the energy storage controller according to the temperature information of each of the cable assemblies; the temperature information is used to characterize the temperature of the power line in the cable assembly; The cooling system is fixed in the energy storage device, the cooling system is connected to at least one of the cable assemblies, and the first controller is also connected to the cooling system; wherein the cooling system is used to output a coolant to each of the cable assemblies; the coolant is used to cool the cable assembly; One second controller is fixed in one of the charging piles, one second controller is connected to one of the cable assemblies, and one second controller is also connected to a charging controller in the charging pile; wherein, the second controller is used to control the passage and disconnection between the charging pile and the new energy vehicle through the charging controller according to the leakage information of the charging pile; the leakage information reflects the leakage degree of the charging pile.

2. The charging cable system according to claim 1, characterized in that: The cable assembly comprises: a composite cable, a first connector, and a second connector; The composite cable is used to transmit charging current, transfer communication signals, feedback temperature information of the cable assembly, receive coolant output by the cooling system, and output coolant to the cooling system; One end of the composite cable is connected to the first connector, and the first connector is connected to the output end of the energy storage device, the first controller and the cooling system; The other end of the composite cable is connected to the second connector, and the second connector is connected to the input end of the charging pile and the second controller.

3. The charging cable system according to claim 2, characterized in that: The composite cable comprises: a plurality of power lines, at least one temperature line, at least one communication line, a cooling input line, a cooling output line, a cable protective layer and an overall protective layer; The power line is used to output energy storage current, and a plurality of the power lines surround to form a ring structure; The temperature circuit is used to detect the temperature of the power circuit, and at least one of the temperature circuits is located inside the annular structure; The communication line is used to transmit communication signals, and at least one of the communication lines is located outside the ring structure; The cooling input line is wound around the outside of the ring structure; The cable protective layer is sleeved on the outside of the annular structure and the cooling input line; The cooling output circuit is located outside the cable protective layer; The overall protective layer is sleeved on the outside of the cable protective layer, the cooling output line and at least one of the communication lines.

4. The charging cable system according to claim 3, characterized in that: The first connector includes: a plurality of first power terminals, at least one first temperature terminal, at least one first communication terminal, a coolant input port and a coolant output port; One of the first power terminals is connected to one end of one of the power lines; the first power terminal is used to be connected to the output end of the energy storage device; One of the first temperature terminals is connected to one end of one of the temperature circuits; the first temperature terminal is used to be connected to the first controller; One of the first communication terminals is connected to one end of the communication line; the first communication terminal is used to connect to the first controller; the first communication terminal is also used to connect to the energy storage controller of the energy storage device; The coolant input port is connected to the cooling input line, and the coolant input port is used to receive the coolant output by the cooling system; The coolant output port is connected to the cooling output line, and the coolant output port is used to output coolant to the cooling system.

5. The charging cable system according to claim 3, characterized in that: The second connector includes: a plurality of second power terminals, at least one second temperature terminal, at least one second communication terminal, and two cooling liquid transfer ports; One of the second power terminals is connected to one end of the power line; the second power terminal is used to be connected to the input end of the charging pile; One of the second temperature terminals is connected to one end of one of the temperature circuits; the second temperature terminal is used to output an initial voltage to the temperature circuit; the temperature circuit outputs a temperature voltage to the first temperature terminal of the first connector according to the initial voltage; the temperature voltage is temperature information used to characterize the temperature conditions of multiple power circuits in the composite cable; One of the second communication terminals is connected to one end of the communication line; the second communication terminal is used to connect to the second controller and the charging controller of the charging pile; One of the coolant transfer ports is connected to the cooling input circuit, the other coolant transfer port is connected to the cooling output circuit, and the two coolant transfer ports are connected to each other.

6. The charging cable system according to claim 1, characterized in that: The first controller includes: at least one temperature sensor and a first processor; One of the temperature sensors is connected to the first connector of the cable assembly; The temperature sensor is also connected to the first processor, and the temperature sensor is used to send temperature information of each cable assembly to the first processor; The first processor is connected to the energy storage controller, and the first processor is used to generate an energy storage path signal or an energy storage circuit breaker signal of each cable assembly according to the temperature information of each cable assembly; the first processor is also used to send the energy storage path signal and the energy storage circuit breaker signal to the energy storage controller; the energy storage path signal is used to instruct the energy storage controller to set the connection between the energy storage device and the cable assembly as a path; the energy storage circuit breaker signal is used to instruct the energy storage controller to set the connection between the energy storage device and the cable assembly as a circuit breaker; The first processor is also connected to the cooling system; The first processor is used to generate a cooling level signal for each cable assembly according to the temperature information of each cable assembly; the cooling system adjusts the flow rate of the coolant in each cable assembly according to the cooling level signal.

7. The charging cable system according to claim 1, characterized in that: The cooling system comprises: an input manifold, a compressor, a condenser, an output manifold, and at least one flow rate controller; The input multi-tube joint has at least one input port and one output port, one input port of the input multi-tube joint is connected to a coolant output port of a first connector of the cable assembly through a pipeline, and the output port of the input multi-tube joint is connected to the input port of the compressor; The output port of the compressor is connected to the input port of the condenser; The output multi-tube connector has at least one output port and one input port; The input port of the output multi-tube joint is connected to the output port of the condenser; one output port of the output multi-tube joint is connected to the coolant input port of the first connector of the cable assembly through a pipeline; One of the flow rate controllers is connected to the pipeline between the output multi-tube joint and the coolant inlet, and at least one of the flow rate controllers is connected to the first controller respectively; the flow rate controller is used to control the flow rate of the coolant in the pipeline between the output multi-tube joint and the coolant inlet.

8. The charging cable system according to claim 1, characterized in that: The second controller includes: at least one leakage current sensor and a second processor; A power transmission loop of one of the cable assemblies passes through one of the leakage current sensors and is connected to the charging pile; wherein the power transmission loop is used to output charging current to the charging pile; the power transmission loop includes a power supply branch line and a return branch line, the power supply branch line is connected to a first power line in the cable assembly, and the return branch line is connected to a second power line in the cable assembly; the first power line is one of at least one power line in the cable assembly; the second power line is one of at least one power line in the cable assembly; the first power line and the second power line are different power lines; At least one leakage sensor is connected to the second processor respectively; the leakage sensor is used to detect leakage current in the power transmission circuit; The second processor is used to generate a charging path signal or a charging disconnection signal for each transmission circuit according to the leakage current of each transmission circuit; the second processor is also used to send the charging path signal and the charging disconnection signal to the charging controller; wherein the charging path signal is used to instruct the charging controller to set the connection between the charging pile and the new energy vehicle as a path; the charging disconnection signal is used to instruct the charging controller to set the connection between the charging pile and the new energy vehicle as a disconnection.

9. A charging control method for a charging cable system, characterized in that: include: The target first controller and the cooling system respectively respond to monitoring the start-up of the energy storage device, and the target second controller responds to the start-up of the first charging pile; wherein, the start-up of the energy storage device indicates that the energy storage device outputs a charging current to at least one charging pile; the first charging pile is one of at least one charging pile that receives a charging current; the target first controller is a first controller connected to the first charging pile; the target second controller is a second controller fixed to the first charging pile; the start-up of the first charging pile indicates that the first charging pile is connected to the new energy vehicle and outputs a charging current to the new energy vehicle; The target first controller receives first temperature information of a first cable assembly; wherein the first cable assembly is a cable assembly connected between the energy storage device and the first charging pile; the first temperature information is used to characterize the temperature of the power line in the first cable assembly; The target first controller generates an energy storage path signal or an energy storage circuit breaker signal according to the first temperature information, and sends the energy storage path signal or the energy storage circuit breaker signal to the energy storage controller of the energy storage device; wherein the energy storage path signal is used to instruct the energy storage controller to maintain the connection between the energy storage device and the first charging pile; the energy storage circuit breaker signal is used to instruct the energy storage controller to disconnect the connection between the energy storage device and the first charging pile; The cooling system generates the energy storage path signal in response to the target first controller, and the cooling system outputs cooling liquid to the first cable assembly; The target second controller generates the energy storage path signal in response to the target first controller, and the target second controller detects the leakage degree of the first charging pile to obtain first leakage information; The target second controller generates a charging path signal or a charging circuit breaker signal according to the first leakage information, and sends the charging path signal or the charging circuit breaker signal to the first charging controller of the first charging pile; wherein the first charging controller is used to control the path and circuit breaker between the first charging pile and the new energy vehicle; the charging path signal is used to instruct the first charging controller to maintain the connection between the first charging pile and the new energy vehicle; the charging circuit breaker signal is used to instruct the first charging controller to disconnect the connection between the first charging pile and the new energy vehicle.

10. The charging control method according to claim 9, characterized in that: After the target first controller generates an energy storage path signal or an energy storage circuit breaker signal according to the first temperature information, and sends the energy storage path signal or the energy storage circuit breaker signal to the energy storage controller of the energy storage device, the method further includes: If the target first controller determines that the number of cable assemblies that generate energy storage circuit breaker signals exceeds a preset energy storage circuit breaker threshold, the target first controller generates an energy storage stop signal and sends the energy storage stop signal to the energy storage controller; wherein the energy storage stop signal is used to instruct the energy storage controller to stop the operation of the energy storage device.

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