Intelligent power distribution circuit

Abstract

The present invention provides an intelligent power distribution circuit, comprising a multi-channel power supply protection control module, a power supply voltage stabilizing module and a dual MCU load control module, wherein the multi-channel power supply protection control module is connected to both a lithium battery and a starting battery, the multi-channel power supply protection control module is connected to key equipment, the multi-channel power supply protection control module is connected to a dual MCU load control module, the dual MCU load control module comprises an MCU module, which is used to open the starting battery to power the key equipment through the MCU module when the lithium battery fails and cannot power the key equipment; the power supply voltage stabilizing module comprises a first voltage stabilizing module and an automatic switching module, the first voltage stabilizing module is connected to a generator; the first voltage stabilizing module is connected to an external battery, the first voltage stabilizing module is connected to the automatic switching module, and is used to automatically switch the generator or the external battery to power the key equipment; the dual MCU load control module is used to sample the voltage and current states of each power supply system and load in real time, and control the on and off of the load.

Description

Technical Field

[0001] The present invention relates to the technical field of avionics power supply, and more specifically, to an intelligent power distribution circuit. Background Art

[0002] Most of the current drone power supplies are relatively simple, using simple busbar wiring, fuse protection and relay control. There is no isolation protection between the various electrical devices. A problem with one electrical device will cause all devices to lose power or have unstable power supply. The ground end cannot obtain the operating status of the electrical equipment in real time, and cannot adjust the power load according to the actual situation in the air, and cannot achieve intelligent control. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides an intelligent power distribution circuit.

[0004] The technical solution adopted by the present invention to solve its technical problems is: an intelligent power distribution circuit, which is improved in that it includes a multi-way power protection control module, a power voltage stabilizing module and a dual MCU load control module, the multi-way power protection control module is connected to both the lithium battery and the starting battery, the multi-way power protection control module is connected to the key equipment, the multi-way power protection control module is connected to the dual MCU load control module, the dual MCU load control module includes an MCU module, which is used to open the starting battery to power the key equipment through the MCU module when the lithium battery fails and cannot power the key equipment; the power voltage stabilizing module includes a first voltage stabilizing module and an automatic switching module, the first voltage stabilizing module is connected to the generator, and is used to output a first regulated voltage; the first voltage stabilizing module is connected to the external battery, the first voltage stabilizing module is connected to the automatic switching module, and the automatic switching module is connected to the key equipment, and is used to automatically switch the generator or the external battery to power the key equipment; the dual MCU load control module is used to sample the voltage and current states of each power supply system and load in real time, and control the on and off of the load.

[0005] In the above circuit, the multi-power supply protection control module includes a fuse F6 and an intelligent power switch U2. One end of the fuse F6 is connected to the lithium battery, and the other end outputs a voltage to power the key equipment. A first connection point is provided between the fuse F6 and the key equipment, and the first connection point is connected to the intelligent power switch U2. The intelligent power switch U2 is also connected to the starting battery and the MCU module, and is used to open the intelligent power switch U2 through the MCU module when the lithium battery fails and cannot power the key equipment, so that the starting battery can power the key equipment.

[0006] In the above circuit, the multi-power protection control module also includes a fuse F1 and a Hall sensor chip U3. The generator and the external battery are connected in parallel to the fuse F1 and then output to the Hall sensor chip U3. The Hall sensor chip U3 outputs four power supplies to the load for use.

[0007] In the above circuit, the output four power supplies include a first power supply, a second power supply, a third power supply and a fourth power supply.

[0008] The first power supply is connected to the fuse F5, and the other end of the fuse F5 is connected to the key equipment for supplying power to the key equipment;

[0009] The second power supply is connected to the fuse F7, and the other end of the fuse F7 is connected to the general load for supplying power to the general load;

[0010] The third power supply is connected to the fuse F3, and the other end of the fuse F3 is connected to the lithium battery for charging the lithium battery;

[0011] The fourth power supply is connected to both fuse F4 and fuse F8. The other end of fuse F4 is connected to the intelligent power switch U1. The intelligent power switch U1 is also connected to the engine excitation circuit and the MCU module. It is used to open the intelligent power switch U1 through the MCU module so that the fourth power supply can supply power to the engine excitation circuit. The other end of fuse F8 is connected to other loads for supplying power to other loads.

[0012] In the above circuit, Schottky diodes D10 and D11 are provided between the fourth power supply and the fuses F4 and F8. The positive electrode of Schottky diode D10 and the positive electrode of Schottky diode D11 are both connected to the fourth power supply, and the negative electrode of Schottky diode D10 and the negative electrode of Schottky diode D11 are both connected to the fuses F4 and F8 for isolation and backflow prevention.

[0013] In the above circuit, the first voltage stabilizing module includes a voltage stabilizing chip U40, which is connected to the generator and is used to output a first regulated voltage; the automatic switching module includes Schottky diodes D22, D23, D24, D25, D26, D27, D28, D29 and D30.

[0014] The anode of the Schottky diode D22 is connected to the output end of the voltage regulator chip U40 to receive the first voltage regulator voltage, and the cathode of the Schottky diode D22 is connected to the key device to supply power to the key device;

[0015] A first connection point is provided between the positive electrode of the Schottky diode D22 and the voltage stabilizing chip U40, and the first connection point is connected to the external battery. The first connection point is also connected to the positive electrodes of Schottky diodes D23, D24, D25, D26, D27, D28, D29 and D30. The negative electrodes of Schottky diodes D23, D24, D25, D26, D27, D28, D29 and D30 are respectively connected to different key devices for powering the key devices.

[0016] In the above circuit, a sampling resistor is provided between the cathode of the Schottky diode D22 and the key device, for real-time current sampling of the key device.

[0017] In the above circuit, the power supply voltage stabilization module also includes a cooling fan power supply module and a sensor power supply module. The cooling fan power supply module includes a MOS tube Q5 and a Hall sensor chip U4. The voltage synthesized by the generator and the battery is transmitted to the Hall sensor chip U4 via the MOS tube Q5, and the Hall sensor chip U4 then transmits the power to the cooling fan, so that the MOS tube Q5 can control the on and off of the cooling fan.

[0018] The sensor power supply module includes a voltage regulator POW5V and a power switch U9. The voltage synthesized by the generator and the external battery is stabilized by the voltage regulator POW5V and transmitted to the power switch U9, which then transmits it to the sensor for power supply. The power switch U9 is also connected to the MCU module for feedback of real-time current.

[0019] In the above circuit, the power supply voltage stabilization module also includes a general load power supply circuit, which includes a second voltage stabilization module, multiple power switches, a MOS tube Q1 and a Hall current sensor U11, and the second voltage stabilization module includes a voltage stabilization chip U20, which is connected to the generator and is used to output a second regulated voltage;

[0020] The voltage stabilizing chip U20 is connected to a plurality of power switches, and the power switches are respectively connected to light loads, and are used to provide the second regulated voltage to the light loads for power supply, and enable the power switches to control the on and off of the light loads;

[0021] The voltage regulator chip U20 is connected to the MOS tube Q1, and the MOS tube Q1 is connected to the high-power load, and is used to provide the second regulated voltage to the high-power load for power supply, and enable the MOS tube Q1 to control the on and off of the high power;

[0022] The MOS tube Q1 is also connected to the Hall current sensor U11, which measures the current of the high-power load in real time and transmits it to the MCU module.

[0023] In the above circuit, the MCU module includes a main control chip U30 and a sub-control chip U6.

[0024] The main control chip U30 is connected to the starting battery and the load, and measures the signals of the starting battery and the load in real time through the ADC channel;

[0025] The main control chip U30 is connected to the lithium battery through a coulomb meter interface, and is used to measure the power, temperature and charge and discharge current of the lithium battery in real time;

[0026] The auxiliary control chip U6 is connected to the flight controller to receive the signal from the flight controller;

[0027] The main control chip U30 and the auxiliary control chip U6 communicate through the serial port to manually control the on and off of the load;

[0028] The main control chip U30 is connected to the ground station via wireless data transmission, and is used to transmit the collected data to the ground station, and automatically control the on and off of the load according to a preset logic table and threshold.

[0029] The beneficial effects of the present invention are: realizing multi-channel power supply for key equipment, ensuring the long-term capability of the system, and improving the stability of the system by stabilizing the voltage of the power supply; sampling the voltage and current status of each power supply system in real time through the MCU, understanding the power consumption status in real time, and communicating with the ground station to realize intelligent control. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Attached Figure 1 The figure is a structural block diagram of an intelligent power distribution circuit of the present invention.

[0031] Attached Figure 2 for Figure 1 The specific circuit structure diagram of the multi-channel power protection control module.

[0032] Attached Figure 3 This is a specific circuit structure diagram of a first voltage stabilizing module in an intelligent power distribution circuit of the present invention.

[0033] Attached Figure 4 The figure is a specific circuit structure diagram of an automatic switching module in an intelligent power distribution circuit of the present invention.

[0034] Attached Figure 5 The present invention is a specific circuit structure diagram of a cooling fan power supply module and a sensor power supply module in an intelligent power distribution circuit.

[0035] Attached Figure 6 and attached Figure 7 The specific circuit structure diagram of a general load power supply circuit in an intelligent power distribution circuit of the present invention.

[0036] Attached Figure 8 The figure is a specific circuit structure diagram of a main control chip in an intelligent power distribution circuit of the present invention.

[0037] Attached Fig. 9 The figure is a specific circuit structure diagram of a sub-control chip in an intelligent power distribution circuit of the present invention. DETAILED DESCRIPTION

[0038] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0039] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the invention can be combined interchangeably without conflicting with each other.

[0040] Reference Figure 1 As shown, the present invention discloses an intelligent power distribution circuit, including a multi-way power supply protection control module, a power supply voltage stabilizing module and a dual MCU load control module, the multi-way power supply protection control module is connected to both the lithium battery and the starting battery, the multi-way power supply protection control module is connected to the key equipment, the multi-way power supply protection control module is connected to the dual MCU load control module, the dual MCU load control module includes an MCU module, which is used to open the starting battery to power the key equipment through the MCU module when the lithium battery fails and cannot power the key equipment; the power supply voltage stabilizing module includes a first voltage stabilizing module 201 and an automatic switching module 202, the first voltage stabilizing module 201 is connected to the generator, and is used to output a first regulated voltage; the first voltage stabilizing module 201 is connected to the external battery, the first voltage stabilizing module is connected to the automatic switching module, and the automatic switching module is connected to the key equipment, and is used to automatically switch the generator or the external battery to power the key equipment; the dual MCU load control module is used to sample the voltage and current states of each power supply system and load in real time, and control the on and off of the load. It realizes multi-channel power supply for key equipment, ensures the long-term capability of the system, and improves the stability of the system by stabilizing the voltage of the power supply; it realizes intelligent control by real-time detection of the power supply system and load, and controlling the on and off of the load.

[0041] Reference Figure 2 As shown, the multi-way power supply protection control module includes a fuse F6 and an intelligent power switch U2, one end of the fuse F6 is connected to the lithium battery, and the other end outputs a voltage to power the key equipment; a first connection point 10 is provided between the fuse F6 and the key equipment, and the first connection point 10 is connected to the intelligent power switch U2, and the intelligent power switch U2 is also connected to the starting battery and the MCU module, and is used to open the intelligent power switch U2 through the MCU module when the lithium battery fails and cannot power the key equipment, so that the starting battery can power the key equipment; the multi-way power supply protection control module also includes a fuse F1 and a Hall sensor chip U3, the generator and the external battery are connected in parallel to the fuse F1, and then output to the Hall sensor chip U3, and four power supplies are output through the Hall sensor chip U3 for use by the load. Furthermore, the output four power supplies include a first power supply, a second power supply, a third power supply and a fourth power supply. The first power supply is connected to the fuse F5, and the other end of the fuse F5 is connected to the key equipment for powering the key equipment; the second power supply is connected to the fuse F7, and the other end of the fuse F7 is connected to the general load for powering the general load; the third power supply is connected to the fuse F3, and the other end of the fuse F3 is connected to the lithium battery for charging the lithium battery; the fourth power supply is connected to both the fuse F4 and the fuse F8, and the other end of the fuse F4 is connected to the intelligent power switch U1, and the intelligent power switch U1 is also connected to the engine excitation circuit and the MCU module, and is used to open the intelligent power switch U1 through the MCU module, so that the fourth power supply supplies power to the engine excitation circuit; the other end of the fuse F8 is connected to other loads for powering other loads. Schottky diodes D10 and D11 are provided between the fourth power supply and fuses F4 and F8. The positive pole of Schottky diode D10 and the positive pole of Schottky diode D11 are both connected to the fourth power supply, and the negative pole of Schottky diode D10 and the negative pole of Schottky diode D11 are both connected to fuses F4 and F8, for isolation and backflow prevention. The automatic switching of power supply by combining the generator, external battery debugging power supply, lithium battery power supply and starting battery power supply is realized. The circuits of each power supply have fuses to protect against overcurrent and short circuit, and the use of other normal loads in parallel will not be affected by problems such as overcurrent and short circuit of one load. The voltage and current status of the output four power supplies are fed back by the Hall sensor chip and read by the MCU, so that the power consumption status can be understood in real time, realizing intelligent control.

[0042] Reference Figure 3 and Figure 4As shown, the first voltage stabilizing module 201 includes a voltage stabilizing chip U40, which is connected to the generator for outputting a first regulated voltage; the voltage stabilizing chip U40 is connected to an external battery, the voltage stabilizing chip U40 is connected to an automatic switching module 202, the automatic switching module 202 is connected to key equipment, and is used to automatically switch the generator or the external battery to power the key equipment; the automatic switching module 202 includes Schottky diodes D22, Schottky diodes D23, Schottky diodes D24, Schottky diodes D25, Schottky diodes D26, Schottky diodes D27, Schottky diodes D28, Schottky diodes D29 and Schottky diodes D30, the positive electrode of the Schottky diode D22 is connected to the output end of the voltage stabilizing chip U3 for receiving the first regulated voltage, and the negative electrode of the Schottky diode D22 is connected to the key equipment to supply the key equipment including the recorder, flight control, data transmission, left, middle and right 3-way servos, throttle servos and tail servos A first connection point 203 is provided between the positive electrode of the Schottky diode D22 and the voltage regulator chip U3, and the first connection point 203 is connected to the battery. The first connection point 203 is also connected to the positive electrodes of Schottky diodes D23, D24, D25, D26, D27, D28, D29 and D30. The Schottky diodes D 23. The cathodes of Schottky diodes D24, D25, D26, D27, D28, D29 and D30 are connected to different key devices, for example, the cathode of Schottky diode D23 is connected to the recorder, the cathode of Schottky diode D24 is connected to the flight control, the cathode of Schottky diode D25 is connected to the data transmission, etc., so that the battery can power the key devices. Schottky diodes D23, D24, ..., D29 and D30 realize the automatic switching between the generator and the external battery, and have the function of preventing backflow. In this way, the generator usually powers the key devices after voltage stabilization, and the battery does not consume power. When the generator fails to power, it automatically switches to the external battery to power the key devices, ensuring the reliability and durability of the system.

[0043] Further, see Figure 4 As shown, sampling resistors R128, R129, ..., R134 and R135 are provided between the cathode of the Schottky diode D22 and the key equipment to sample the real-time current of 8 key equipments.

[0044] Reference Figure 5As shown, the power supply voltage stabilization module also includes a cooling fan power supply module and a sensor power supply module. The cooling fan power supply module includes a MOS tube Q5 and a Hall sensor chip U4. The voltage synthesized by the generator and the battery is transmitted to the Hall sensor chip U4 via the MOS tube Q5, and the Hall sensor chip U4 is then transmitted to the cooling fan for power supply, so that the MOS tube Q5 can control the on and off of the cooling fan; the sensor power supply module includes a voltage stabilizer POW5V and a power switch U9. The voltage synthesized by the generator and the external battery is transmitted to the power switch U9 after being stabilized by the voltage stabilizer POW5V, and the power switch U9 is then transmitted to the sensor for power supply; the power switch U9 is also connected to the MCU module to feedback real-time current.

[0045] Reference Figure 6 As shown, the power supply voltage regulator module also includes a general load power supply circuit, which includes a second voltage regulator module 204, multiple power switches, a MOS tube Q1 and a Hall current sensor U11. The second voltage regulator module 204 includes a voltage regulator chip U20, which is connected to the generator and outputs a second regulated voltage; the voltage regulator chip U20 is connected to multiple power switches, and the multiple power switches are respectively connected to light loads to provide the second regulated voltage to the light load for power supply, and enable the power switch to control the on and off of the light load; combined with Figure 7 As shown, the voltage regulator chip U20 is connected to the MOS tube Q1, and the MOS tube Q1 is connected to the high-power load, providing the second regulated voltage to the high-power load for power supply, and enabling the MOS tube Q1 to control the on and off of the high power; the MOS tube Q1 is also connected to the Hall current sensor U11, and the Hall current sensor U11 measures the current of the high-power load in real time and transmits it to the MCU module.

[0046] Reference Figure 8 and Fig. 9 As shown, the MCU module includes a main control chip U30 and a sub-control chip U6. The main control chip U30 is connected to the starting battery and the load, and the signals of the starting battery and the load are measured in real time through the ADC channel; the main control chip U30 is connected to the lithium battery through the coulomb meter interface, which is used to measure the power, temperature and charge and discharge current of the lithium battery in real time; the sub-control chip U6 is connected to the flight control, which is used to receive the signal of the flight control; the main control chip U30 and the sub-control chip U6 communicate through the serial port, and the on and off of the load can be manually controlled; the main control chip U30 is connected to the ground station through wireless data transmission, and the collected data is transmitted to the ground station, and the load is automatically on and off controlled according to the preset logic table and threshold. It is realized that the voltage and current status of each power supply system is sampled in real time through the MCU, the power consumption status is understood in real time, and it communicates with the ground station to realize intelligent control.

[0047] An intelligent power distribution circuit of the present invention realizes multi-channel power supply for key equipment, ensures the long-term capability of the system, and improves the stability of the system by stabilizing the voltage of the power supply. The MCU samples the voltage and current status of each power supply system in real time, understands the power consumption status in real time, and communicates with the ground station to realize intelligent control.

[0048] The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. An intelligent power distribution circuit, Features: Including multi-channel power protection control module, power supply voltage regulation module and dual MCU load control module, The multi-way power protection control module is connected to both the lithium battery and the starting battery, the multi-way power protection control module is connected to the key equipment, the multi-way power protection control module is connected to the dual MCU load control module, and the dual MCU load control module includes an MCU module, which is used to open the starting battery through the MCU module to power the key equipment when the lithium battery fails and cannot power the key equipment; The power supply voltage stabilizing module includes a first voltage stabilizing module and an automatic switching module. The first voltage stabilizing module is connected to the generator and is used to output a first regulated voltage. The first voltage stabilizing module is connected to an external battery. The first voltage stabilizing module is connected to the automatic switching module. The automatic switching module is connected to key equipment and is used to automatically switch the generator or the external battery to power the key equipment. The dual MCU load control module is used to sample the voltage and current status of each power supply system and load in real time, and control the on and off of the load; The first voltage stabilizing module includes a voltage stabilizing chip U40, which is connected to the generator and is used to output a first regulated voltage; the automatic switching module includes Schottky diodes D22, D23, D24, D25, D26, D27, D28, D29 and D30. The anode of the Schottky diode D22 is connected to the output end of the voltage regulator chip U40 to receive the first voltage regulator voltage, and the cathode of the Schottky diode D22 is connected to the key device to supply power to the key device; A first connection point is provided between the positive electrode of the Schottky diode D22 and the voltage stabilizing chip U40, and the first connection point is connected to the external battery. The first connection point is also connected to the positive electrodes of Schottky diodes D23, D24, D25, D26, D27, D28, D29 and D30. The negative electrodes of Schottky diodes D23, D24, D25, D26, D27, D28, D29 and D30 are respectively connected to different key devices for powering the key devices.

2. An intelligent power distribution circuit as claimed in claim 1, Features: The multi-power supply protection control module includes a fuse F6 and an intelligent power switch U2. One end of the fuse F6 is connected to the lithium battery, and the other end outputs a voltage to power the key equipment. A first connection point is provided between the fuse F6 and the key equipment, and the first connection point is connected to the intelligent power switch U2. The intelligent power switch U2 is also connected to the starting battery and the MCU module, and is used to open the intelligent power switch U2 through the MCU module when the lithium battery fails and cannot power the key equipment, so that the starting battery can power the key equipment.

3. An intelligent power distribution circuit as claimed in claim 2, Features: The multi-channel power protection control module also includes a fuse F1 and a Hall sensor chip U3. The generator and the external battery are connected in parallel to the fuse F1 and then output to the Hall sensor chip U3. The Hall sensor chip U3 outputs four-channel power to the load for use.

4. An intelligent power distribution circuit as claimed in claim 3, Features: The output four power supplies include a first power supply, a second power supply, a third power supply and a fourth power supply. The first power supply is connected to the fuse F5, and the other end of the fuse F5 is connected to the key equipment for supplying power to the key equipment; The second power supply is connected to the fuse F7, and the other end of the fuse F7 is connected to the general load for supplying power to the general load; The third power supply is connected to the fuse F3, and the other end of the fuse F3 is connected to the lithium battery for charging the lithium battery; The fourth power supply is connected to both fuse F4 and fuse F8. The other end of fuse F4 is connected to the intelligent power switch U1. The intelligent power switch U1 is also connected to the engine excitation circuit and the MCU module. It is used to open the intelligent power switch U1 through the MCU module so that the fourth power supply can supply power to the engine excitation circuit. The other end of fuse F8 is connected to other loads for supplying power to other loads.

5. An intelligent power distribution circuit as claimed in claim 4, Features: A Schottky diode D10 and a Schottky diode D11 are provided between the fourth power supply and the fuses F4 and F8. The anode of the Schottky diode D10 and the cathode of the Schottky diode D11 are both connected to the fourth power supply, and the cathode of the Schottky diode D10 and the cathode of the Schottky diode D11 are both connected to the fuses F4 and F8 for isolation and backflow prevention.

6. An intelligent power distribution circuit as claimed in claim 1, Features: A sampling resistor is provided between the cathode of the Schottky diode D22 and the key device, for real-time current sampling of the key device.

7. An intelligent power distribution circuit as claimed in claim 6, Features: The power supply voltage stabilization module also includes a cooling fan power supply module and a sensor power supply module. The cooling fan power supply module includes a MOS tube Q5 and a Hall sensor chip U4. The voltage synthesized by the generator and the battery is transmitted to the Hall sensor chip U4 via the MOS tube Q5, and the Hall sensor chip U4 then transmits the voltage to the cooling fan for power supply, so that the MOS tube Q5 can control the on and off of the cooling fan. The sensor power supply module includes a voltage regulator POW5V and a power switch U9. The voltage synthesized by the generator and the external battery is stabilized by the voltage regulator POW5V and transmitted to the power switch U9, which then transmits it to the sensor for power supply. The power switch U9 is also connected to the MCU module for feedback of real-time current.

8. An intelligent power distribution circuit as claimed in claim 7, Features: The power supply voltage stabilization module also includes a general load power supply circuit, which includes a second voltage stabilization module, multiple power switches, a MOS tube Q1 and a Hall current sensor U11. The second voltage stabilization module includes a voltage stabilization chip U20, which is connected to the generator and is used to output a second regulated voltage. The voltage stabilizing chip U20 is connected to a plurality of power switches, and the power switches are respectively connected to light loads, and are used to provide the second regulated voltage to the light loads for power supply, and enable the power switches to control the on and off of the light loads; The voltage regulator chip U20 is connected to the MOS tube Q1, and the MOS tube Q1 is connected to the high-power load, and is used to provide the second regulated voltage to the high-power load for power supply, and enable the MOS tube Q1 to control the on and off of the high power; The MOS tube Q1 is also connected to the Hall current sensor U11, which measures the current of the high-power load in real time and transmits it to the MCU module.

9. An intelligent power distribution circuit as claimed in claim 1, Features: The MCU module includes a main control chip U30 and a sub-control chip U6. The main control chip U30 is connected to the starting battery and the load, and measures the signals of the starting battery and the load in real time through the ADC channel; The main control chip U30 is connected to the lithium battery through a coulomb meter interface, and is used to measure the power, temperature and charge and discharge current of the lithium battery in real time; The auxiliary control chip U6 is connected to the flight controller to receive the signal from the flight controller; The main control chip U30 and the auxiliary control chip U6 communicate through the serial port to manually control the on and off of the load; The main control chip U30 is connected to the ground station via wireless data transmission, and is used to transmit the collected data to the ground station, and automatically control the on and off of the load according to a preset logic table and threshold.

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