A charging system for a lamp and an aviation charging box thereof

Abstract

The invention relates to a charging system for a lamp and an aviation charging box thereof, comprising a controller, a power supply, a charging circuit, a switch circuit, a power supply working state monitoring circuit and a charging state indicating circuit; the power supply supplies power to the lamp through the charging circuit; the switch circuit is used to detect whether the lamp is seated in a charging position; the controller controls the charging circuit to charge the lamp according to an on-off signal of the switch circuit; the power supply working state monitoring circuit gives a feedback signal to the controller according to the working state of the power supply, and the controller controls the charging state display of the charging state indicating circuit according to the feedback signal, so that the aviation box has both transportation and charging functions, improves the utilization rate of the aviation box, and can also control the charging of the lamp by detecting whether the lamp is seated in the charging position.

Description

Technical Field

[0001] The invention relates to the technical field of stage lamp packaging and transportation, and in particular to a lamp charging system and an aviation charging box thereof. Background Art

[0002] A Chinese invention patent (CN108054801A) discloses a charging box for a rechargeable lamp, which includes a box body, a box cover and a contact sensor; the box body is provided with a controllable switch and a charging unit for charging the rechargeable lamp; a first connection end of the controllable switch is connected to the charging unit; a second connection end of the controllable switch is connected to a power source; the contact sensor is used to control the controllable switch to connect the charging unit and the power source when the box cover is in an open state on the box body, and is also used to control the controllable switch to disconnect the charging unit and the power source when the box cover is in a closed state on the box body; the above technical solution has the defect that the contact sensor and the controllable switch are used to realize charging when the box cover is opened, and the power is cut off when the box cover is closed, and it cannot accurately control the charging state of each lamp. If the contact sensor and the controllable switch fail to cooperate, the entire charging unit will not be able to be charged. Summary of the invention

[0003] The present invention is to solve one of the above technical problems and provide a charging system for a lamp, and also provide an aviation charging box using the charging system; the charging of the lamp is controlled by detecting whether the lamp is seated in the charging position.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] A charging system for a lamp, comprising a controller, a power supply, a charging circuit, a switch circuit, a power supply working state monitoring circuit and a charging state indicating circuit;

[0006] The power supply supplies power to the lamp through the charging circuit;

[0007] The switch circuit is used to detect whether the lamp is in the charging position;

[0008] The controller controls the charging circuit to charge the lamp according to the on / off signal of the switch circuit;

[0009] The power supply working state monitoring circuit gives a feedback signal to the controller according to the working state of the power supply, and the controller controls the charging state display of the charging state indicating circuit according to the feedback signal.

[0010] As a preferred embodiment, it is further defined that the charging circuit includes a photocoupler U1, and the pin 1 of the photocoupler U1 is respectively connected to the VCC end and one end of the capacitor C39 through the resistor R14, and the other end of the capacitor C39 is grounded, the pin 2 of the photocoupler U1 is connected to the collector of the transistor Q30, the base of the transistor Q30 is respectively connected to one end of the resistor R16 and one end of the resistor R30, and the node after the emitter of the transistor Q30 is connected to the other end of the resistor R30 is grounded, the other end of the resistor R16 is connected to the CH_ON1 end of the controller, the pin 3 of the photocoupler U1 is respectively connected to one end of the resistor R28 and one end of the resistor R56, and the photocoupler Pin 4 of the device U1 is respectively connected to the power supply access terminal, the resistor R9 terminal and the source of the MOS tube Q30 through the resistor R7. The gate of the MOS tube Q30 is respectively connected to the other end of the resistor R9 and one end of the resistor R21. The drain of the MOS tube Q30 is respectively connected to the positive electrode of the diode D5 and the positive electrode of the diode D6. The node after the cathode of the diode D5 and the cathode of the diode D6 are connected is connected to the BAT+ terminal. The other end of the resistor R56 is respectively connected to one end of the resistor R22 and the base of the transistor Q5. The collector of the transistor Q5 is connected to the other end of the resistor R21. The node after one end of the resistor R28, one end of the resistor R22 and the emitter of the transistor Q5 are connected is grounded.

[0011] As a preferred embodiment, it is further defined that the power supply working status monitoring circuit includes a photocoupler U2, pin 1 of the photocoupler U2 is connected to the AD1 end through a resistor R15, pin 2 of the photocoupler U2 is grounded through a resistor R24, pin 3 of the photocoupler U2 is respectively connected to one end of a resistor R27 and an ADC1 end of a controller, the other end of the resistor R27 is grounded, pin 4 of the photocoupler U2 is respectively connected to one end of a resistor R5 and one end of a capacitor C28, the other end of the resistor R5 is respectively connected to one end of a resistor R2 and one end of a resistor R3, the other end of the resistor R2 is connected to the VCC end, and the other end of the resistor R3 is connected to the 3.3V end.

[0012] As a preferred embodiment, it is further defined that the charging status indication circuit includes a transistor Q8 and a transistor Q9, the base of the transistor Q8 is respectively connected to one end of a resistor R19 and one end of a resistor R25, the other end of the resistor R19 is connected to the ADC1_G end of the controller, the collector of the transistor Q8 is connected to the G-LED1 indicator through a resistor R51, the base of the transistor Q9 is respectively connected to one end of a resistor R26 and one end of a resistor R11, the other end of the resistor R26 is connected to the ADC1_R end of the controller, the collector of the transistor Q9 is connected to the R-LED1 indicator through a resistor R6, and the node after one end of the resistor R25, the emitter of the transistor Q8, the other end of the resistor R11 and the emitter of the transistor Q9 are connected is grounded.

[0013] As a preferred implementation, it is further defined that the switch circuit includes a travel switch 30, the travel switch 30 is connected to the controller via the terminal J11, and the on / off signal of the travel switch 30 is fed back to the controller via the SENSER1 terminal.

[0014] As a preferred embodiment, it is further defined that the charging system also includes an over-temperature protection circuit for detecting temperature changes of the charging device, the over-temperature protection circuit includes a thermistor R29, one end of the thermistor R29 is connected to the 3.3V terminal, the other end of the thermistor R29 is respectively connected to one end of the capacitor C24 and one end of the resistor R31 to form a collection node, the collection node is connected to the TEMPER2 end of the controller, the other end of the capacitor C24 and the other end of the resistor R31 are connected to ground.

[0015] As a preferred embodiment, it is further defined that the charging system also includes a heat dissipation circuit for dissipating heat from the charging device, the heat dissipation circuit includes a heat dissipation fan, the heat dissipation fan is connected to the controller through the FAN1 terminal, the pin 4 of the FAN1 terminal is connected to one end of the resistor R137 and one end of the resistor R139 through the fuse F1, the other end of the resistor R137 is connected to the VCC terminal, the other end of the resistor R139 is connected to one end of the resistor R141 and the 8025FG-A terminal of the controller, the other end of the resistor R141 is grounded, the pin 3 of the FAN1 terminal is connected to the 8025PWM-A terminal of the controller through the fuse F2, the pin 2 of the FAN1 terminal is connected to the +12V terminal, and the pin 1 of the FAN1 terminal is grounded.

[0016] As a preferred embodiment, it is further defined that the charging system also includes a box switch detection circuit for detecting the switch state of the box upper cover, and the box switch detection circuit includes a photosensitive detection circuit and / or a Hall detection circuit.

[0017] As a preferred embodiment, it is further defined that the charging system also includes an alarm circuit that performs an alarm action according to the photosensitive signal of the photosensitive detection circuit through the controller.

[0018] An aviation charging box including the charging system includes a box body with an openable cover, the box body is provided with a plurality of charging positions for placing lamps, and the charging system is electrically connected to each charging position to charge the lamp placed at the charging position.

[0019] After adopting the above technical solution, the invention has at least the following beneficial effects:

[0020] 1. A charging system for a lamp and an aviation box using the charging system, including a controller, a power supply, a charging circuit, a switch circuit, a power supply working status monitoring circuit and a charging status indicating circuit. The charging system can understand the charging status of the lamp in the aviation box in real time, so that the aviation box has both transportation and charging functions, thereby improving the utilization rate of the aviation box. At the same time, the charging of the lamp is controlled by detecting whether the lamp is seated in the charging position, thereby realizing the individual control of the charging of the lamp at each charging position.

[0021] 2. The system also has an over-temperature protection circuit, a heat dissipation circuit, a box switch detection circuit and an alarm circuit, thereby increasing the safety performance during charging. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is the principle block diagram of the charging system;

[0023] Figure 2 is the circuit diagram of the charging circuit;

[0024] Figure 3 It is a circuit diagram of a power supply working status monitoring circuit;

[0025] Figure 4 is a circuit diagram of a charging status indication circuit;

[0026] Figure 5 It is the circuit diagram of the switching circuit;

[0027] Figure 6 It is the circuit diagram of the over-temperature protection circuit;

[0028] Figure 7 It is the circuit diagram of the heat dissipation circuit;

[0029] Figure 8 It is the circuit diagram of the photosensitive detection circuit;

[0030] Fig. 9 This is the circuit diagram of the Hall detection circuit;

[0031] Fig.10It is the circuit diagram of the alarm circuit;

[0032] Fig.11 is the circuit diagram of the controller;

[0033] Fig.12 This is a structural diagram of the aviation charging box;

[0034] Fig.13 This is a structural diagram of the lamp placed in the aviation charging box;

[0035] Fig.14 It is a structural diagram of the lamp. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments in the present application and the features described in the embodiments may be combined with each other. The present application is further described in detail below in conjunction with the drawings and specific embodiments.

[0037] As attached Figure 1 As shown, a charging system for a lamp includes a controller, a power supply, a charging circuit, a switch circuit, a power supply working state monitoring circuit and a charging state indicating circuit; the controller model is N32G435RBL7-1, and the power supply supplies power to the lamp through the charging circuit; the switch circuit is used to detect whether the lamp is seated in the charging position; the controller controls the charging circuit to charge the lamp according to the on-off signal of the switch circuit; the power supply working state monitoring circuit gives a feedback signal to the controller according to the working state of the power supply, and the controller controls the charging state display of the charging state indicating circuit according to the feedback signal, and the power supply mainly includes a constant voltage power supply and a constant current power supply, the constant voltage power supply is mainly used to supply power to the voltage end of the controller in the circuit board and the 3.3V end, VCC end, VDD end and the like in each circuit, and the constant current power supply is used to supply power to the charging circuit; specifically, the controller is connected to 6 groups of charging circuits, each group of charging circuits is equipped with a switch circuit, a power supply working state monitoring circuit and a charging state indicating circuit, so that each group of charging devices is relatively independent, and the individual control of the charging of the lamp is realized.

[0038] As attached Figure 2 and attached Fig.11As shown, the charging circuit includes a photocoupler U1, a pin 1 of the photocoupler U1 is respectively connected to the VCC terminal and one end of the capacitor C39 through a resistor R14, the other end of the capacitor C39 is grounded, a pin 2 of the photocoupler U1 is connected to the collector of the transistor Q30, the base of the transistor Q30 is respectively connected to one end of the resistor R16 and one end of the resistor R30, the node after the emitter of the transistor Q30 is connected to the other end of the resistor R30 is grounded, and the other end of the resistor R16 is connected to the control The CH_ON1 end of the photocoupler U1 is connected to one end of the resistor R28 and one end of the resistor R56 respectively. The pin 4 of the photocoupler U1 is connected to the power supply access end, the resistor R9 end and the source of the MOS tube Q30 through the resistor R7 respectively. The gate of the MOS tube Q30 is connected to the other end of the resistor R9 and one end of the resistor R21 respectively. The drain of the MOS tube Q30 is connected to the positive electrode of the diode D5 and the positive electrode of the diode D6 respectively. The cathode of the diode D5 and the diode D The node after the negative electrode of 6 is connected is connected to the BAT+ terminal, the other end of the resistor R56 is respectively connected to one end of the resistor R22 and the base of the transistor Q5, the collector of the transistor Q5 is connected to the other end of the resistor R21, and the node after one end of the resistor R28, one end of the resistor R22 and the emitter of the transistor Q5 are connected is grounded; the constant current power supply is connected to the charging circuit through the terminal J5, the pin 5 of the terminal J5 is connected to the AD1 terminal and the level signal is fed back to the power supply working state monitoring circuit through the terminal, so that the power supply working state monitoring circuit can monitor the working state of the constant current power supply and feed back the monitoring signal to the controller; the node after the pin 4 and the pin 3 of the terminal J5 are connected are respectively connected to the power supply access terminal and the positive electrode of the polarity capacitor C31, and the node after the pin 2 and the pin 1 of the terminal J5 are connected is connected to the negative electrode of the polarity capacitor C31 and then grounded; the photoelectric coupler U1 can realize the electrical isolation between the controller and the MOS tube, that is, the control end and the charging end are electrically isolated to prevent mutual interference between the circuits and improve the stability of the circuit.

[0039] As attached Figure 3 and attached Fig.11As shown, the power supply working state monitoring circuit includes a photocoupler U2, wherein pin 1 of the photocoupler U2 is connected to the AD1 terminal through a resistor R15, and pin 2 of the photocoupler U2 is grounded through a resistor R24. Pin 3 of the photocoupler U2 is respectively connected to one end of a resistor R27 and the ADC1 terminal of a controller, and the other end of the resistor R27 is grounded. Pin 4 of the photocoupler U2 is respectively connected to one end of a resistor R5 and one end of a capacitor C28, and the other end of the resistor R5 is respectively connected to one end of a resistor R2 and one end of a resistor R3, the other end of the resistor R2 is connected to the VCC terminal, and the other end of the resistor R3 is connected to the 3.3V terminal. Similarly, the photocoupler U2 can improve the stability of the power supply working state monitoring circuit.

[0040] As attached Figure 4 and attached Fig.11 As shown, the charging status indication circuit includes a transistor Q8 and a transistor Q9, the base of the transistor Q8 is respectively connected to one end of a resistor R19 and one end of a resistor R25, the other end of the resistor R19 is connected to the ADC1_G end of the controller, the collector of the transistor Q8 is connected to the G-LED1 indicator through a resistor R51, the base of the transistor Q9 is respectively connected to one end of a resistor R26 and one end of a resistor R11, the other end of the resistor R26 is connected to the ADC1_R end of the controller, and the transistor The collector of tube Q9 is connected to the R-LED1 indicator light through the resistor R6, and the node after one end of the resistor R25, the emitter of the transistor Q8, the other end of the resistor R11 and the emitter of the transistor Q9 are connected to the ground. Specifically, when the controller controls the ADC1_R end to be high level and the ADC1_G end to be low level, the R-LED1 indicator light is "red", indicating that it is charging; if the ADC1_R end is low level and the ADC1_G end is high level, the G-LED1 indicator light is "green", indicating that it is fully charged.

[0041] As attached Figure 5 and attached Fig.11 As shown, the switch circuit includes a travel switch 30, which is connected to the controller through terminal J11. The on-off signal of the travel switch 30 is fed back to the controller through the SENSER1 terminal of the controller to realize the connection or disconnection of the lamp charging; the travel switch 30 effectively ensures that there is no voltage output when the charging position is empty, thereby preventing the short circuit and other problems caused by the falling of metal objects when the charging position is empty.

[0042] As attached Figure 6 and attached Fig.11As shown, the charging system also includes an over-temperature protection circuit for detecting temperature changes of the charging device, the over-temperature protection circuit includes a thermistor R29, one end of the thermistor R29 is connected to the 3.3V end, the other end of the thermistor R29 is respectively connected to one end of the capacitor C24 and one end of the resistor R31 to form a collection node, the collection node is connected to the TEMPER2 end of the controller, the other end of the capacitor C24 and the other end of the resistor R31 are connected and then grounded, the thermistor is placed on a circuit board that is prone to heat, it can detect the heating condition of the circuit board during operation in real time, the controller can control the on and off of the charging circuit according to the temperature change of the thermistor; if the thermistor is set to be higher than 85°C, the controller controls the charging circuit to disconnect to stop charging the battery inside the lamp, thereby preventing possible dangers caused by overheating.

[0043] As attached Figure 7 and attached Fig.11 As shown, the charging system also includes a heat dissipation circuit for dissipating heat from the charging device, the heat dissipation circuit includes a heat dissipation fan, the heat dissipation fan is connected to the controller through the FAN1 terminal, the pin 4 of the FAN1 terminal is respectively connected to one end of the resistor R137 and one end of the resistor R139 through the fuse F1, the other end of the resistor R137 is connected to the VCC terminal, the other end of the resistor R139 is respectively connected to one end of the resistor R141 and the 8025FG-A terminal of the controller, the other end of the resistor R141 is grounded, and the FAN1 terminal Pin 3 of the sub is connected to the 8025PWM-A terminal of the controller through the fuse F2, pin 2 of the FAN1 terminal is connected to the +12V terminal, and pin 1 of the FAN1 terminal is grounded. Preferably, two cooling fans are provided. When the temperature of the thermistor R29 reaches 40°C, the controller controls the cooling fan to rotate at a low speed through the cooling circuit; when the temperature of the thermistor reaches 50°C, the cooling fan rotates at a medium speed; when the temperature of the thermistor reaches 60°C, the cooling fan rotates at full speed; this is beneficial to the heat dissipation during charging and reduces the risk factor caused by heat during charging.

[0044] As attached Figure 8 and attached Fig.11As shown, the charging system also includes a box switch detection circuit for detecting the switch status of the box cover, and the box switch detection circuit includes a photosensitive detection circuit and / or a Hall detection circuit. The charging system also includes an alarm circuit that performs an alarm action according to the photosensitive signal of the photosensitive detection circuit through the controller. The Hall detection circuit includes a Hall element placed in the box and a magnet installed on the box cover. After the cover is closed, the Hall element can detect the magnetic force of the magnet. At this time, the Hall element converts the magnetic force signal into a high-level signal and feeds it back to the controller through the SENSER-ADC1 terminal, so that the controller recognizes the closed state of the aviation box cover. At the same time, the controller controls the charging circuit to stop charging to prevent the cover of the aviation box from being closed during charging, and the charging status inside the aviation box cannot be seen clearly, which may cause a series of charging dangers. In addition, we can also use a photosensitive detection circuit to achieve the above functions, as shown in the attached Fig. 9 Specifically, a photosensitive component is installed in the box. When the photosensitive component detects no light signal, it means that the upper cover of the box is in a closed state. Fig.10 and attached Fig.11 As shown, at this time, the controller controls the buzzer on the alarm circuit to sound an alarm through the HORN terminal, and at the same time the controller controls the charging circuit to stop charging, thereby enhancing the safety of the charging device.

[0045] Working principle: When charging, put the lamp into the charging position, and the bottom of the lamp contacts the travel switch 30 to close it. At this time, the SENSER1 terminal of the controller receives the conduction signal, and the controller controls the MOS tube Q30 of the charging circuit to turn on through the CH_ON1 terminal. The voltage of the constant current power supply 30V is pulled down by the battery inside the lamp, and enters the constant current state and charges the battery with a current of 1.5A. At this time, the feedback pin AD1 of the constant current power supply feeds back a high-level signal to the power supply working state monitoring circuit, and the power supply working state monitoring circuit inputs a high level to the controller through the ADC1 terminal. The controller performs execution processing according to the level signal to control the ADC1_G terminal to be high and the ADC1_R terminal to be low. At this time, the R-LED1 indicator of the charging state indication circuit lights up "red", indicating that the battery of the lamp is being charged;

[0046] When fully charged, the charging current of the constant current power supply is less than 250mA. At this time, the feedback pin AD1 of the constant current power supply feeds back a low level signal to the power supply working status monitoring circuit. The power supply working status monitoring circuit inputs a low level to the controller through the ADC1 terminal. The controller performs execution processing according to the level signal to control the ADC1_G terminal to be low level and the ADC1_R terminal to be high level. At this time, the G-LED1 indicator light of the charging status indication circuit lights up "green", indicating that the battery of the lamp is fully charged.

[0047] As attached Fig.12 To Attachment Fig.14 As shown, an aviation charging box using the above-mentioned charging system includes a box body 10 with an openable cover, and a plurality of charging positions 20 for placing lamps are arranged on the box body. The charging system is electrically connected to each of the charging positions 20 so that the lamps placed at the charging positions 20 can be charged. Specifically, the charging positions 20 are provided with metal probes 50 for electrically contacting the metal ring 40 at the bottom of the lamp. When the lamp is seated, the metal probe 50 is electrically contacted with the metal ring 40, and at the same time, the bottom of the lamp touches the travel switch 30 to turn it on, and the lamp can be charged.

[0048] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various equivalent changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A charging system for a lamp, characterized in that: It includes a controller, a power supply, a charging circuit, a switch circuit, a power supply working state monitoring circuit and a charging state indicating circuit; The power supply supplies power to the lamp through the charging circuit; The switch circuit is used to detect whether the lamp is in the charging position; The controller controls the charging circuit to charge the lamp according to the on / off signal of the switch circuit; The power supply working state monitoring circuit gives a feedback signal to the controller according to the working state of the power supply, and the controller controls the charging state display of the charging state indicating circuit according to the feedback signal.

2. The charging system according to claim 1, characterized in that: The charging circuit includes a photocoupler U1, wherein the pin 1 of the photocoupler U1 is respectively connected to the VCC terminal and one end of a capacitor C39 through a resistor R14, and the other end of the capacitor C39 is grounded, the pin 2 of the photocoupler U1 is connected to the collector of a transistor Q30, the base of the transistor Q30 is respectively connected to one end of a resistor R16 and one end of a resistor R30, the node after the emitter of the transistor Q30 is connected to the other end of the resistor R30 is grounded, the other end of the resistor R16 is connected to the CH_ON1 terminal of the controller, the pin 3 of the photocoupler U1 is respectively connected to one end of a resistor R28 and one end of a resistor R56, and the pin 4 of the photocoupler U1 is connected to the collector of a transistor Q30. The power supply access terminal, the resistor R9 terminal and the source of the MOS tube Q30 are respectively connected through the resistor R7. The gate of the MOS tube Q30 is respectively connected to the other end of the resistor R9 and one end of the resistor R21. The drain of the MOS tube Q30 is respectively connected to the positive electrode of the diode D5 and the positive electrode of the diode D6. The node where the negative electrode of the diode D5 and the negative electrode of the diode D6 are connected is connected to the BAT+ terminal. The other end of the resistor R56 is respectively connected to one end of the resistor R22 and the base of the transistor Q5. The collector of the transistor Q5 is connected to the other end of the resistor R21. The node where one end of the resistor R28, one end of the resistor R22 and the emitter of the transistor Q5 are connected is grounded.

3. The charging system according to claim 2, characterized in that: The power supply working state monitoring circuit includes a photocoupler U2, wherein pin 1 of the photocoupler U2 is connected to the AD1 end through a resistor R15, pin 2 of the photocoupler U2 is grounded through a resistor R24, pin 3 of the photocoupler U2 is respectively connected to one end of a resistor R27 and the ADC1 end of a controller, the other end of the resistor R27 is grounded, pin 4 of the photocoupler U2 is respectively connected to one end of a resistor R5 and one end of a capacitor C28, the other end of the resistor R5 is respectively connected to one end of a resistor R2 and one end of a resistor R3, the other end of the resistor R2 is connected to the VCC end, and the other end of the resistor R3 is connected to the 3.3V end.

4. The charging system according to claim 3, characterized in that: The charging status indication circuit includes a transistor Q8 and a transistor Q9, the base of the transistor Q8 is respectively connected to one end of a resistor R19 and one end of a resistor R25, the other end of the resistor R19 is connected to the ADC1_G end of the controller, the collector of the transistor Q8 is connected to the G-LED1 indicator through a resistor R51, the base of the transistor Q9 is respectively connected to one end of a resistor R26 and one end of a resistor R11, the other end of the resistor R26 is connected to the ADC1_R end of the controller, the collector of the transistor Q9 is connected to the R-LED1 indicator through a resistor R6, and the node where one end of the resistor R25, the emitter of the transistor Q8, the other end of the resistor R11 and the emitter of the transistor Q9 are connected is grounded.

5. The charging system according to claim 1, characterized in that: The switch circuit includes a travel switch, which is connected to the controller via a terminal J11, and an on / off signal of the travel switch is fed back to the controller via a SENSER1 terminal of the controller.

6. The charging system according to claim 1, characterized in that: The charging system also includes an over-temperature protection circuit for detecting temperature changes of the charging device, the over-temperature protection circuit includes a thermistor R29, one end of the thermistor R29 is connected to the 3.3V terminal, the other end of the thermistor R29 is respectively connected to one end of the capacitor C24 and one end of the resistor R31 to form a collection node, the collection node is connected to the TEMPER2 terminal of the controller, the other end of the capacitor C24 and the other end of the resistor R31 are connected to the ground.

7. The charging system according to claim 1, characterized in that: The charging system also includes a heat dissipation circuit for dissipating heat from the charging device, the heat dissipation circuit includes a heat dissipation fan, the heat dissipation fan is connected to the controller through the FAN1 terminal, the pin 4 of the FAN1 terminal is connected to one end of the resistor R137 and one end of the resistor R139 through the fuse F1, the other end of the resistor R137 is connected to the VCC terminal, the other end of the resistor R139 is connected to one end of the resistor R141 and the 8025FG-A terminal of the controller, the other end of the resistor R141 is grounded, the pin 3 of the FAN1 terminal is connected to the 8025PWM-A terminal of the controller through the fuse F2, the pin 2 of the FAN1 terminal is connected to the +12V terminal, and the pin 1 of the FAN1 terminal is grounded.

8. The charging system according to any one of claims 1 to 7, characterized in that: The charging system also includes a box switch detection circuit for detecting the switch state of the box upper cover, and the box switch detection circuit includes a photosensitive detection circuit and / or a Hall detection circuit.

9. The charging system according to claim 8, characterized in that: The charging system also includes an alarm circuit which executes an alarm action according to a photosensitive signal of a photosensitive detection circuit through the controller.

10. An aviation charging box comprising the charging system according to any one of claims 1 to 9, characterized in that: The utility model comprises a box body with a cover capable of being opened and closed, wherein a plurality of charging positions for placing lamps are arranged on the box body, and the charging system is electrically connected with each charging position so that the lamps placed at the charging position can be charged.

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