Charging control system and charging pile

Abstract

According to the charging control system and the charging pile provided by the utility model, the charging control system detects the charging temperature through the thermistor, and when the charging temperature is abnormal, the controller disconnects the connection between the power supply and the charging unit, and sends the temperature information to the external equipment at the same time to indicate that the external equipment is separated from the charging pile. Therefore, the charging temperature can be accurately and quickly determined, dual protection is realized when the charging temperature is abnormal, the potential safety hazard in the charging process is reduced, the communication method is simplified, and the communication cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of charging piles, and in particular to a charging control system and a charging pile. Background Art

[0002] When charging the lawn mower robot, it is charged through the charging pile. The MOS tube inside the charging pile plays the role of regulating the connection between the power supply and the charging port in the charging control system. If the MOS tube is abnormal, the charging temperature may easily get out of control and continue to rise. If it is not protected at this time, it may easily cause the charging pile and the lawn mower robot to be burned, posing a safety hazard.

[0003] The current protection solution is generally to install a temperature sensor inside the charging pile to realize temperature monitoring. However, the temperature sensor cannot sense the accurate temperature of the charging pile in the first time and cannot solve the hidden dangers in charging. At the same time, the existing technology requires an additional communication module to communicate with the lawn mowing robot, which causes the internal structure to be complicated and the communication cost to be high. Utility Model Content

[0004] The technical problem to be solved by the present invention is to provide a charging control system and a charging pile in view of the deficiencies existing in the above-mentioned prior art, so as to realize communication with external devices by reusing the infrared transmitting tube inside the charging pile, without the need for additional communication modules, simplifying the communication method, reducing communication costs, and at the same time setting a thermistor at the charging interface to quickly and accurately feedback the charging temperature and reduce safety hazards.

[0005] In a first aspect, the utility model provides a charging control system, which includes: a power supply, a charging unit, a control unit and an infrared emitting tube, wherein the charging unit includes a thermistor; wherein:

[0006] A charging unit, used to connect to an external device, charge the external device, and shut off the path to the power source in response to a first control signal from the control unit;

[0007] A control unit, used to send a second control signal to the infrared emitting tube, determine the charging temperature through the thermistor, judge whether the charging temperature exceeds the first temperature threshold, and send a first control signal to the charging unit when the charging temperature exceeds the first temperature threshold;

[0008] The infrared transmitting tube is used to receive the second control signal and send a temperature signal to the external device. The temperature signal is a signal carrying the charging temperature. The temperature signal is used to instruct the external device to determine whether to disconnect from the charging unit according to the charging temperature.

[0009] In a possible example, the output port of the power supply is connected to the input port of the charging unit, the output port of the charging unit is connected to the input port of the control unit, and the output port of the control unit is connected to the input port of the infrared emitting tube; the power supply includes: a positive power supply port and a negative power supply port; the power supply is used to provide a charging voltage to the charging control system.

[0010] In one possible example, the charging unit includes a switching tube; wherein the input port of the switching tube is respectively connected to the positive port of the power supply and the first output port of the control unit, and the output port of the switching tube is connected to the charging unit; the switching tube is used to disconnect the power supply from the charging unit according to the first control signal.

[0011] In one possible example, the switch tube is a first switch tube or a second switch tube; when the switch tube is the first switch tube, the first control signal is used to control the gate voltage of the first switch tube to be reduced to below a first preset voltage, so that the conductive channel of the first switch tube is exhausted and the power supply and the charging unit are disconnected, and the first switch tube is an NMOS tube; when the switch tube is the second switch tube, the second control signal is used to control the gate voltage of the second switch tube to be increased to above a second preset voltage, so that the conductive channel of the second switch tube is exhausted and the charging unit is disconnected, the second switch tube is a PMOS tube, and the first preset voltage is less than the second preset voltage.

[0012] In a possible example, the charging unit includes a positive charging port and a negative charging port; wherein the positive charging port is connected to the output port of the switching tube, and the negative charging port is connected to the negative power supply port.

[0013] In one possible example, the input port of the thermistor is connected to the positive charging port, and / or the input port of the thermistor is connected to the negative charging port, and the output port of the thermistor is connected to the input port of the control unit; wherein, the higher the charging temperature, the smaller the resistance value of the thermistor, so as to enable the control unit to monitor the temperature of the positive charging port and / or the negative charging port through the thermistor.

[0014] In one possible example, the control unit is also used to: when it is judged that the charging temperature is lower than a first temperature threshold and higher than a second temperature threshold, send a first control signal to the switch tube, and the second temperature threshold is less than the first temperature threshold; when it is judged that the charging temperature is lower than the second temperature threshold, stop sending the first control signal to the switch tube.

[0015] In a possible example, the infrared emitting tube includes a first infrared emitting tube, a second infrared emitting tube, a third infrared emitting tube and a fourth infrared emitting tube; wherein, the input port of the first infrared emitting tube is connected to the second output port of the control unit, the input port of the second infrared emitting tube is connected to the third output port of the control unit, the input port of the third infrared emitting tube is connected to the fourth output port of the control unit and the input port of the fourth infrared emitting tube is connected to the fifth output port of the control unit; the first infrared emitting tube, the second infrared emitting tube, the third infrared emitting tube and the fourth infrared emitting tube send temperature signals to the external device in turn according to preset time intervals.

[0016] In a possible example, the positive charging port is connected to the positive port of the external device, and the negative charging port is connected to the negative port of the external device.

[0017] In a second aspect, the utility model provides a charging pile, including a charging control system as disclosed in the first aspect of the embodiment of the utility model.

[0018] It can be seen that the above charging control system detects the charging temperature through thermistors. When the charging temperature is abnormal, the controller disconnects the power supply from the charging unit and sends temperature information to the external device to instruct the external device to disconnect from the charging pile. In this way, the charging temperature can be accurately and quickly determined, and double protection can be achieved when the charging temperature is abnormal, reducing safety hazards in charging, simplifying communication methods, and reducing communication costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a system schematic diagram of a charging control system provided by an embodiment of the utility model;

[0021] Figure 2 It is a specific structural diagram of a charging control system provided by an embodiment of the utility model. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solution in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, but not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of the utility model.

[0023] In the description of the present invention, it should be noted that the directions or positional relationships indicated by “upper” and the like are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience and simplification of the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as a limitation on the present invention.

[0024] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connection", "setting", "installation", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0026] The embodiments of the present utility model are described below in conjunction with the accompanying drawings.

[0027] See also Figure 1 , Figure 1 is a system schematic diagram of a charging control system provided by an embodiment of the utility model, such as Figure 1 As shown, the charging control system 100 includes a power supply 110, a charging unit 120, a control unit 130 and an infrared emitting tube 140, and the charging unit 120 includes a thermistor 121 and a thermistor 122; wherein,

[0028] The output port of the power supply 110 is connected to the input port of the charging unit 120, the output port of the charging unit 120 is connected to the input port of the control unit 130, and the output port of the control unit 130 is connected to the input port of the infrared emitting tube 140;

[0029] The charging unit 120 is used to connect to an external device, charge the external device, and respond to the first control signal of the control unit 130 to shut off the path to the power supply; the control unit 130 is used to send a second control signal to the infrared emitting tube 140, and determine the charging temperature through the thermistors 121 and 122, and judge whether the charging temperature exceeds the first temperature threshold. When the charging temperature exceeds the first temperature threshold, the first control signal is sent to the charging unit 120; the infrared emitting tube 140 is used to receive the second control signal and send a temperature signal to the external device. The temperature signal is a signal carrying the charging temperature. The temperature signal is used to instruct the external device to judge whether to disconnect from the charging unit 120 according to the charging temperature.

[0030] Specifically, in this example, the external device may be an electrical device connected to a charging station, and preferably a lawn mowing robot capable of receiving infrared signals.

[0031] Among them, the first temperature threshold is the abnormal temperature threshold inside the charging pile. If the first temperature threshold is exceeded, it proves that the charging temperature inside the charging pile is high. If charging continues, it is easy to burn the system and burn the external equipment. Safety hazards, therefore, are taken at this time. While cutting off the line between the power supply 110 and the charging unit 120, a temperature signal is sent through the infrared transmitting tube 140 to indicate to the external device that there is an abnormality in the current charging temperature inside the charging pile, so that the external device can be disconnected from the charging pile in time.

[0032] Among them, the infrared transmitting tube can perform time-division multiplexing while sending positioning information, and send infrared signals carrying temperature information to external devices, thereby reducing communication costs.

[0033] It can be seen that in this example, the charging control system detects the charging temperature through the thermistor. When the charging temperature is abnormal, the controller disconnects the power supply from the charging unit and sends temperature information to the external device to instruct the external device to disconnect from the charging pile. In this way, the charging temperature can be accurately and quickly determined, and double protection can be achieved when the charging temperature is abnormal, reducing safety hazards in charging, simplifying the communication method, and reducing communication costs.

[0034] See also Figure 2 , Figure 2 is a specific structural diagram of a charging control system provided by an embodiment of the utility model, such as Figure 2 As shown: the power supply 110 includes a positive power supply port and a negative power supply port, the charging unit 120 includes a switch tube 123, the charging unit 120 includes a positive charging port and a negative charging port, and the infrared emitting tube 140 includes a first infrared tube 141, a second infrared tube 142, a third infrared tube 143 and a fourth infrared tube 144;

[0035] The positive power supply circuit is connected to the switch tube 123, the switch tube 123 is connected to the positive charging port in the charging unit 120, and the negative power supply circuit is connected to the negative charging port in the charging unit 120. Figure 2 The MCU (Microcontroller Unit) connection line includes a thermistor 121 and a thermistor 122. It should be understood that only one thermistor can be set at the positive charging port or the negative charging port behind the charging unit 120. Figure 2 Only the case where two thermistors are provided is shown; the MCU is connected to the infrared emitting tube 140, such as Figure 2 As shown, four infrared tubes are respectively connected to the MCU to receive control signals from the MCU and to send out infrared signals carrying control signal instructions.

[0036] In a possible example, the power supply includes: a positive power supply port and a negative power supply port; and a power supply for providing a charging voltage to a charging control system.

[0037] Specifically, in this example, there is no restriction on whether the power source is AC or DC, and the power source may be a DC bus or an AC bus connected to an external city grid.

[0038] In one possible example, the charging unit includes a switching tube; wherein the input port of the switching tube is respectively connected to the positive port of the power supply and the first output port of the control unit, and the output port of the switching tube is connected to the charging unit; the switching tube is used to disconnect the power supply from the charging unit according to the first control signal.

[0039] In one possible example, the switch tube is a first switch tube or a second switch tube; when the switch tube is the first switch tube, the first control signal is used to control the gate voltage of the first switch tube to be reduced to below a first preset voltage, so that the conductive channel of the first switch tube is exhausted and the power supply and the charging unit are disconnected, and the first switch tube is an NMOS tube; when the switch tube is the second switch tube, the second control signal is used to control the gate voltage of the second switch tube to be increased to above a second preset voltage, so that the conductive channel of the second switch tube is exhausted and the charging unit is disconnected, the second switch tube is a PMOS tube, and the first preset voltage is less than the second preset voltage.

[0040] The basic structure of a MOS transistor consists of a semiconductor substrate with a thin layer of insulating material (oxide) and a metal gate. Depending on the type of charge carriers and the voltage applied to the gate, the MOS transistor in this example can be either n-type (NMOS) or p-type (PMOS).

[0041] Specifically, due to the difference in switching characteristics between NMOS tubes and PMOS tubes, when the controller controls the switching unit, when the switching unit is an NMOS tube, when the gate voltage of the NMOS tube is controlled by the controller to decrease to below the threshold, the conductive channel is exhausted, and the transistor stops conducting current between the source and the drain. In this state, the transistor acts as an open switch to prevent current from flowing; when the switching unit is a PMOS tube, when the gate voltage of the PMOS tube is controlled by the controller to increase to above the threshold, the conductive channel is exhausted, and the transistor stops conducting current between the source and the drain, and behaves as an open switch.

[0042] In a possible example, the charging unit includes a positive charging port and a negative charging port; wherein the positive charging port is connected to the output port of the switching tube, and the negative charging port is connected to the negative power supply port.

[0043] In one possible example, the input port of the thermistor is connected to the positive charging port, and / or the input port of the thermistor is connected to the negative charging port, and the output port of the thermistor is connected to the input port of the control unit; wherein, the higher the charging temperature, the smaller the resistance value of the thermistor, so as to enable the control unit to monitor the temperature of the positive charging port and / or the negative charging port through the thermistor.

[0044] Specifically, a thermistor is a resistor whose resistance value changes with temperature. The resistance value of a thermistor usually decreases with increasing temperature, or increases with increasing temperature. The working principle of the thermistor is based on the change in resistivity of the material at different temperatures. As the temperature changes, factors such as the free carrier concentration, carrier mobility, and lattice structure in the material will change, thereby affecting the resistance value. It should be understood that in this example, a negative temperature coefficient (NTC) thermistor is preferably used. The NTC thermistor will reduce its own resistance value as the charging temperature increases.

[0045] The controller determines the linear relationship between the resistance value of the thermistor and the charging temperature by sensing the resistance value of the thermistor, and determines the charging temperature of the current charging control system according to the linear relationship, thereby achieving the above-mentioned monitoring effect of the charging temperature through the thermistor.

[0046] In one possible example, the control unit is also used to: when it is judged that the charging temperature is lower than a first temperature threshold and higher than a second temperature threshold, send a first control signal to the switch tube, and the second temperature threshold is less than the first temperature threshold; when it is judged that the charging temperature is lower than the second temperature threshold, stop sending the first control signal to the switch tube.

[0047] Among them, when it is judged that the charging temperature is higher than the second temperature threshold but lower than the first temperature threshold, it means that although the internal temperature of the charging pile has risen, it is still in a controllable state. At this time, it is only necessary to cut off the line between the power supply and the charging unit by controlling the switch unit, and there is no need to send temperature information to the external device.

[0048] In other possible examples, when it is determined that the charging temperature is lower than the first temperature threshold and higher than the second temperature threshold, a first control signal is sent to the switch unit, and the charging temperature is continuously monitored;

[0049] If the charging temperature is in a rising state, a second control signal is immediately sent to control the infrared transmitting tube to send temperature information to instruct the external device to detach from the charging unit.

[0050] Among them, after the switch unit is shut down, the charging temperature is continuously monitored. If the charging temperature is found to continue to rise, the following situations may occur: 1. The switch unit is abnormal and cannot be shut down, causing the power supply and the charging unit to still be connected; 2. The switch unit is shut down normally, but one or more flammable components inside the charging pile have thermal runaway, causing the internal temperature of the charging pile to be out of control. At this time, it is necessary to notify the external equipment in time and disconnect the connection in time to protect the external equipment and avoid burning.

[0051] It can be seen that in this example, by judging that the charging temperature is lower than the first temperature threshold and higher than the second temperature threshold, a first control signal is sent to the switch unit, and the second temperature threshold is less than the first temperature threshold. In this way, when the temperature is within the controllable range of the first temperature threshold and the second temperature threshold, there is no need to disconnect the connection between the external device and the charging unit, thereby improving the intelligence of the charging control system while ensuring the protection of the external device.

[0052] In a possible example, the infrared emitting tube includes a first infrared emitting tube, a second infrared emitting tube, a third infrared emitting tube and a fourth infrared emitting tube; wherein, the input port of the first infrared emitting tube is connected to the second output port of the control unit, the input port of the second infrared emitting tube is connected to the third output port of the control unit, the input port of the third infrared emitting tube is connected to the fourth output port of the control unit and the input port of the fourth infrared emitting tube is connected to the fifth output port of the control unit; the first infrared emitting tube, the second infrared emitting tube, the third infrared emitting tube and the fourth infrared emitting tube send temperature signals to the external device in turn according to preset time intervals.

[0053] Among them, the infrared emitting tube is a device used to generate infrared radiation. It is a semiconductor device, and its working principle is based on electron excitation and transition. Generally speaking, the infrared emitting tube consists of an emitting diode, usually made of materials such as gallium arsenide (GaAs). When current passes through the emitting diode, it will excite the electrons in the material and make them transition to a higher energy level orbit, and then infrared radiation will be generated due to the transition of the electrons. The frequency of this infrared radiation is usually between several gigahertz and tens of megahertz. The operating frequency and power output of the infrared emitting tube can be adjusted and optimized according to application requirements.

[0054] Among them, exemplarily, when the charging pile is working normally, a third control signal is generated at a fixed timing and sent to the four infrared emitting tubes. Specifically, the fixed timing can be 100ms, 200ms or other time. The third control signal is used to instruct the first infrared emitting tube to send the first positioning identification information, the second infrared emitting tube to send the second positioning identification information, the third infrared emitting tube to send the third positioning identification information, and the fourth infrared emitting tube to send the fourth positioning identification information; and then an external device, which can be a lawn mowing robot, receives the above positioning identification information to determine the position of the charging port of the charging pile.

[0055] Specifically, in combination with the above-mentioned infrared transmitting tube sending a temperature signal to an external device, the time division multiplexing (TDM) of the infrared transmitting tube is realized, and a method of sharing the same communication channel or transmission medium is realized for multiple signals or data streams. It realizes multiplexing by dividing different time slots in time so that different signals are transmitted in different time periods. In time division multiplexing, a communication channel or transmission medium is divided into continuous time slots within a period of time, and each time slot is used to transmit a signal or data stream. These time slots are periodically allocated to different signal sources in a predefined order to ensure that each signal source can be transmitted within a certain time. At the receiving end, the data stream in the received time slot can be restored to the original multiple signals according to the pre-agreed time slot allocation scheme.

[0056] It can be seen that in this example, the controller controls the infrared transmitting tube to send positioning information to the external device, so that the external device can accurately locate the charging port of the charging pile, avoiding abnormal charging events caused by the external device being unable to align with the charging port, and improving the intelligence and reliability of charging.

[0057] In a possible example, the positive charging port is connected to the positive port of the external device, and the negative charging port is connected to the negative port of the external device.

[0058] In some other possible embodiments of the present utility model, the charging control system further includes a storage module (not shown), which is electrically connected to the control unit 130. The storage module can use a common storage chip to store various data acquired and processed by the charging control system 100, as well as system operation information.

[0059] On the other hand, an embodiment of the utility model further proposes a charging pile, which includes the charging control system of the above-mentioned embodiment.

[0060] It should be noted that, for the above-mentioned embodiments of the utility model, for the sake of simplicity of description, they are all expressed as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the described action sequence, because according to the utility model, some steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the utility model.

[0061] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0062] In the several embodiments provided by the present utility model, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only schematic, such as the division of the above-mentioned units, which is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection of devices or units can be electrical or other forms.

[0063] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0064] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0065] The above is a detailed introduction to the embodiments of the utility model. Specific examples are used in this article to illustrate the principles and implementation methods of the utility model. The description of the above embodiments is only used to help understand the utility model and its core ideas. At the same time, for those skilled in the art, according to the ideas of the utility model, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A charging control system, characterized in that: The charging control system comprises: a power supply, a charging unit, a control unit and an infrared emitting tube, wherein the charging unit comprises a thermistor; wherein, The charging unit is used to connect to an external device, charge the external device, and shut down the path between the power source and the charging unit in response to a first control signal from the control unit; The control unit is used to send a second control signal to the infrared emitting tube, determine the charging temperature through the thermistor, judge whether the charging temperature exceeds a first temperature threshold, and send the first control signal to the charging unit when the charging temperature exceeds the first temperature threshold; The infrared transmitting tube is used to receive the second control signal and send a temperature signal to the external device. The temperature signal is a signal carrying the charging temperature. The temperature signal is used to instruct the external device to determine whether to disconnect from the charging unit based on the charging temperature.

2. The charging control system according to claim 1, characterized in that: The output port of the power supply is connected to the input port of the charging unit, the output port of the charging unit is connected to the input port of the control unit, and the output port of the control unit is connected to the input port of the infrared emitting tube; the power supply includes: a positive power supply port and a negative power supply port; The power supply is used to provide a charging voltage to the charging control system.

3. The charging control system according to claim 2, characterized in that: The charging unit includes a switch tube; wherein the input port of the switch tube is respectively connected to the positive electrode port of the power supply and the first output port of the control unit, and the output port of the switch tube is connected to the charging unit; The switch tube is used to disconnect the power supply from the charging unit according to the first control signal.

4. The charging control system according to claim 3, characterized in that: The switch tube is a first switch tube or a second switch tube; when the switch tube is the first switch tube, the first control signal is used to control the gate voltage of the first switch tube to be reduced to below a first preset voltage, so that the conductive channel of the first switch tube is exhausted, and the power supply and the charging unit are disconnected, and the first switch tube is an NMOS tube; When the switch tube is the second switch tube, the second control signal is used to control the gate voltage of the second switch tube to be increased to above the second preset voltage so that the conductive channel of the second switch tube is exhausted and the charging unit is disconnected, the second switch tube is a PMOS tube, and the first preset voltage is less than the second preset voltage.

5. The charging control system according to claim 3, characterized in that: The charging unit includes a positive charging port and a negative charging port; wherein the positive charging port is connected to the output port of the switch tube, and the negative charging port is connected to the negative power supply port.

6. The charging control system according to claim 5, characterized in that: The input port of the thermistor is connected to the charging positive electrode port, and / or the input port of the thermistor is connected to the charging negative electrode port, and the output port of the thermistor is connected to the input port of the control unit; wherein, the higher the charging temperature, the smaller the resistance value of the thermistor is, so that the control unit can monitor the temperature of the charging positive electrode port and / or the charging negative electrode port through the thermistor.

7. The charging control system according to any one of claims 3 to 5, characterized in that: The control unit is also used for: When it is determined that the charging temperature is lower than the first temperature threshold and higher than a second temperature threshold, sending the first control signal to the switch tube, and the second temperature threshold is lower than the first temperature threshold; When it is determined that the charging temperature is lower than the second temperature threshold, the first control signal is stopped from being sent to the switch tube.

8. The charging control system according to any one of claims 1 to 5, characterized in that: The infrared emitting tube includes a first infrared emitting tube, a second infrared emitting tube, a third infrared emitting tube and a fourth infrared emitting tube; wherein the input port of the first infrared emitting tube is connected to the second output port of the control unit, the input port of the second infrared emitting tube is connected to the third output port of the control unit, the input port of the third infrared emitting tube is connected to the fourth output port of the control unit, and the input port of the fourth infrared emitting tube is connected to the fifth output port of the control unit; The first infrared emitting tube, the second infrared emitting tube, the third infrared emitting tube and the fourth infrared emitting tube send the temperature signal to the external device in sequence according to preset time intervals.

9. The charging control system according to claim 5, characterized in that: The positive charging port is connected to the positive port of the external device, and the negative charging port is connected to the negative port of the external device.

10. A charging pile, characterized in that: The charging pile includes a charging control system as described in any one of claims 1-9.

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