Charging and discharging device and charging and discharging method of unmanned aerial vehicle cluster

Abstract

The invention discloses a charging and discharging device and a charging and discharging method of an unmanned aerial vehicle cluster, the charging and discharging device comprises a power supply module, a charging and discharging module, a battery management module and an MCU module, the charging and discharging module comprises a charging module and a discharging module which are separated from each other, and the charging module and the discharging module are both connected with the power supply module. The charging device is used for charging the power supply module and enabling the power supply module to supply power to electric equipment connected with the charging device; the battery management module is connected with the charging module, the discharging module and the power supply module, and is used for controlling on-off of the charging module and the discharging module; the MCU module is connected with the battery management module and the power supply module, and the MCU module is used for awakening the battery management module in a sleep mode or a closed mode so as to charge or discharge the power supply module. According to the invention, charging and discharging functions are realized, and the charging and discharging functions are awakened in a time-saving and labor-saving manner.

Description

Technical Field

[0001] The present invention relates to the technical field of charging and discharging of unmanned aerial vehicles, and particularly to a charging and discharging device and a charging and discharging method for a cluster of unmanned aerial vehicles. Background Art

[0002] An unmanned aerial vehicle is a type of aircraft without a pilot. According to the number, it can be divided into a single unmanned aerial vehicle and a cluster of unmanned aerial vehicles. The cluster of unmanned aerial vehicles is a current research hotspot. The most important civilian scenarios are light show performances and forest fire fighting. Most unmanned aerial vehicles are equipped with their own batteries and have a certain flight endurance time in the air. After that, they need to return to the ground for charging or battery replacement. Currently, battery replacement is mainly manual, that is, a person opens the battery compartment, takes out the old battery, and replaces it with another fully charged new battery. The characteristic of a cluster of unmanned aerial vehicles is that there are many flights, and hundreds or even thousands of them can fly together. If manual battery replacement is adopted, it is very time-consuming and laborious. In the existing charging, the circuit will be disconnected after the battery is fully charged. Since the charging circuit and the discharging circuit are connected in series, other electrical devices on the unmanned aerial vehicle cannot work properly, which is not suitable for charging an unmanned aerial vehicle during flight. If the battery management IC that manages the charging and discharging of the battery goes into sleep mode and the entire electrical device loses power, the prior art can only activate the unmanned aerial vehicle by manually pressing the button on the unmanned aerial vehicle. For a large number of unmanned aerial vehicle clusters, it is very time-consuming and laborious.

[0003] Therefore, in order to solve the above problems, the present invention provides a charging and discharging device with a fast wake-up charging and discharging function and a charging and discharging method for a cluster of unmanned aerial vehicles. Summary of the Invention

[0004] The present invention provides a charging and discharging device and a charging and discharging method for a cluster of unmanned aerial vehicles, aiming to solve the problem of time-consuming and laborious wake-up of the charging and discharging function of the existing cluster of unmanned aerial vehicles.

[0005] To solve the above technical problems, in the first aspect of the present invention, a charging and discharging device is provided, which includes: a power supply module; a charging and discharging module, which includes a charging module and a discharging module that are separated from each other. Both the charging module and the discharging module are connected to the power supply module to charge the power supply module and enable the power supply module to supply power to an electrical device connected to the charging device; a battery management module, which is connected to the charging module, the discharging module, and the power supply module. The battery management module is used to control the opening and closing of the charging module and the discharging module; an MCU module, which is connected to the battery management module and the power supply module. The MCU module is used to wake up the battery management module in the sleep mode or the off mode to charge or discharge the power supply module.

[0006] Further, the discharging module includes a first PMOS transistor and a fourth PMOS transistor connected in parallel, and the power supply module supplies power to the electrical device through the first PMOS transistor and the fourth PMOS transistor.

[0007] Further, the charging module includes a second NMOS transistor and a third NMOS transistor connected to the second NMOS transistor in a back-to-back structure, and the power supply module is charged through the charging contact via the second NMOS transistor and the third NMOS transistor.

[0008] Further, the battery management module includes an eleventh PMOS transistor, a twelfth NMOS transistor, and a second diode. The MCU module is connected to the wake-up pin in the battery management module through the wake-up IO port via the twelfth NMOS transistor, the eleventh PMOS transistor, and the second diode.

[0009] Further, the charging and discharging device further includes a buck module and a wireless receiving module. The buck module is connected to the power supply module, and the wireless receiving module and the MCU module are connected to reduce the voltage of the power supply module to obtain a supply voltage, and the wireless receiving module and the MCU module are powered by the supply voltage.

[0010] Further, the charging and discharging device further includes a storage discharging module. The storage discharging module includes a seventh NMOS transistor, a fourth resistor, and a fifth resistor. The gate of the seventh NMOS transistor is connected to the MCU module, and the drain of the seventh NMOS transistor is connected to the power supply module via the fifth resistor and the fourth resistor.

[0011] The second aspect of the present invention further provides a charging and discharging method for a drone cluster, which includes: if a shutdown command is received, controlling the battery management module to enter a sleep mode or a shutdown mode, and controlling the MCU module to enter the sleep mode; if the wake-up time of the MCU module is reached, turning on the power supply switch of the wireless receiver; if a startup command is received within a preset waiting reception time, controlling the MCU module to exit the sleep mode, and controlling the MCU module to wake up the battery management module in the sleep mode or the shutdown mode.

[0012] Further, if the startup command is not received within the preset waiting reception time, obtaining the cumulative waiting duration and the voltage of the power supply module; controlling the MCU module and the storage discharging module according to the cumulative waiting duration and the voltage of the power supply module.

[0013] Further, if the accumulated waiting duration is greater than a preset accumulated waiting duration and the voltage of the power supply module is greater than a preset voltage, control the MCU module to exit the sleep mode, and control the fourth resistor and the fifth resistor in the storage discharge module to discharge; obtain the temperature around the fourth resistor and the fifth resistor to get the air temperature, and control the MCU and the storage discharge module according to the air temperature, the voltage of the power supply module, and the preset voltage.

[0014] Further, if the air temperature is greater than a preset air temperature, control the fourth resistor and the fifth resistor in the storage discharge module not to discharge, and control the MCU module to enter the sleep mode; if the air temperature is not greater than the preset air temperature and the voltage of the power supply module is less than the preset voltage, execute the step of controlling the fourth resistor and the fifth resistor in the storage discharge module not to discharge and controlling the MCU module to enter the sleep mode; if the air temperature is not greater than the preset air temperature and the voltage of the power supply module is not less than the preset voltage, execute the step of controlling the fourth resistor and the fifth resistor in the storage discharge module to discharge.

[0015] The charge-discharge device and the charge-discharge method for a drone cluster disclosed by the present invention, wherein the charge-discharge device can charge the power supply module and enable the power supply module to supply power to the electrical equipment by setting a charging module and a discharging module that are separated from each other, that is, the charging and discharging functions are realized; the battery management module in the sleep mode or the off mode is awakened by the MCU module to charge or discharge the power supply module, and it is very time-saving and labor-saving to awaken the charge-discharge function. The charge-discharge device disclosed by the present invention solves the problem that it is time-consuming and laborious to awaken the charge-discharge function in the existing drone cluster. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 is a block diagram of a charge-discharge device provided by an embodiment of the present invention;

[0018] Figure 2 is a circuit schematic diagram of a charge-discharge module and a battery management module provided by an embodiment of the present invention;

[0019] Figure 3 is a partial circuit schematic diagram of a battery management module provided by an embodiment of the present invention;

[0020] Figure 4 It is the circuit schematic diagram of the MCU module, step-down module and wireless receiving module provided by an embodiment of the present invention;

[0021] Figure 5 It is the circuit schematic diagram of the storage discharge module provided by an embodiment of the present invention;

[0022] Figure 6 It is the schematic flow chart of the charging and discharging method of the UAV cluster provided by an embodiment of the present invention;

[0023] Figure 7 It is the schematic diagram of the charging and discharging system of the UAV cluster provided by an embodiment of the present invention;

[0024] Figure 8 It is the schematic flow chart of the charging and discharging method of the UAV cluster provided by another embodiment of the present invention;

[0025] Reference numerals: 10, charging and discharging device; 11, power supply module; 12, charging and discharging module; 121, charging module; 122, discharging module; 13, battery management module; 14, MCU module; 15, step-down module; 16, wireless receiving module; 17, storage discharge module; Q1, first PMOS transistor; Q4, first PMOS transistor; Q2, second NMOS transistor; Q3, third NMOS transistor; Q11, eleventh PMOS transistor; Q12, twelfth PMOS transistor; D2, second diode; Q7, seventh NMOS transistor; R4, fourth resistor; R5, fifth resistor. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprise" indicate the presence of the described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or their combinations.

[0028] It should also be understood that the terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in this specification of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms.

[0029] It should also be further understood that the term "and / or" used in the specification and appended claims of the present invention refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0030] Figures 1 to 5 An embodiment of the charging and discharging device provided by the present invention is shown. The charging and discharging device 10 of this embodiment includes a power supply module 11, a charging and discharging module 12, a battery management module 13, and an MCU module 14. Among them, the charging and discharging module 12 includes a separated charging module 121 and a discharging module 122. Both the charging module 121 and the discharging module 122 are connected to the power supply module 11 to charge the power supply module 11 and enable the power supply module 11 to supply power to the electrical equipment connected to the charging device. The battery management module 13 is connected to the charging module 121, the discharging module 122, and the power supply module 11. The battery management module 13 is used to control the opening and closing of the charging module 121 and the discharging module 122. The MCU module 14 is connected to the battery management module 13 and the power supply module 11. The MCU module 14 is used to wake up the battery management module 13 in the sleep mode or the off mode to charge or discharge the power supply module 11. It should be noted that in this embodiment, the power supply module 11 is a battery pack; the battery management module 13 is a battery management IC; the MCU module 14 is a low-power MCU module 14. It should also be noted that in this embodiment, by setting the separated charging module 121 and the discharging module 122, the charging and discharging device 10 can charge the power supply module 11 and enable the power supply module 11 to supply power to the electrical equipment, that is, the charging and discharging functions are realized. By waking up the battery management module 13 in the sleep mode or the off mode through the MCU module 14 to charge or discharge the power supply module 11, it is very time-saving and labor-saving to wake up the charging and discharging function.

[0031] Please refer to Figure 2 , in an embodiment, such as this embodiment, the discharging module 122 includes a first PMOS transistor Q4Q1 and a fourth PMOS transistor connected in parallel. The power supply module 11 supplies power to the electrical equipment through the first PMOS transistor Q4Q1 and the fourth PMOS transistor. It should be noted that in this embodiment, as Figure 2As shown, the discharge module 122 further includes a tenth MOS transistor Q10, an eighth resistor R8, an eleventh resistor R11, a tenth MOS transistor Q10, a ninth PMOS transistor Q9, and a first diode D1. The tenth MOS transistor Q10, the eighth resistor R8, and the eleventh resistor R11 form an inverter. When the tenth MOS transistor Q10 is turned on, the first PMOS transistor Q4Q1 and the fourth PMOS transistor will be turned on. The characteristic of the discharge control DSG is that when it is turned off, it is not 0V, but the voltage on the PACK pin of the battery management module 13. Due to the separation of the charge and discharge paths, the PACK pin voltage and the 4P_POWER voltage are relatively close under normal conditions. Therefore, the turn-on and turn-off signals given by the discharge control DSG are both turn-on signals for the tenth MOS transistor Q10, resulting in abnormal turn-off. It should also be noted that in this embodiment, to solve the problem that the tenth MOS transistor Q10 cannot be normally turned off, a ninth PMOS transistor Q9 is added. It controls the source and gate of the ninth PMOS transistor Q9 by respectively performing resistor voltage division on the discharge control DSG voltage and the 4P_POWER voltage. The selection of the resistor voltage division ratio needs to consider the maximum voltage that the ninth PMOS transistor Q9 can withstand, and ensure that the turn-off voltage given by the discharge control DSG is not sufficient to turn on the ninth PMOS transistor Q9, so that the discharge control DSG signal becomes effective and then controls the tenth MOS transistor. The function of the first diode D1 is to consider the flight safety of the drone and prevent the drone from falling due to accidental shutdown. Therefore, M_DSG is connected to the MCU module 14. After the drone takes off, the MCU module 14 will pull up M_DSG to keep the tenth MOS transistor Q10 turned on and prevent the discharge control DSG signal from being accidentally turned off.

[0032] Please refer to Figure 2 , in an embodiment, such as this embodiment, the charging module 121 includes a second NMOS transistor and a third NMOS transistor Q3 connected to the back-to-back structure of the second NMOS transistor Q2. The power supply module 11 is charged through the charging contact via the second NMOS transistor and the third NMOS transistor Q3. Specifically, as Figure 2As shown, the third NMOS transistor Q3 near the power supply module 11 is controlled by the charge control CHARGE+ signal, and the second NMOS transistor Q2 near the charging contact is controlled by the discharge control DSG signal. It should be noted that in this embodiment, the charging module 121 further includes an eighth NMOS transistor Q8, and the eighth NMOS transistor Q8 protects the second NMOS transistor Q2 when the drone is reversely charged. Specifically, the eighth NMOS transistor Q8 is connected between the discharge control DSG and the positive charging terminal. When the positive charging terminal is grounded, the gate-source voltage of the eighth NMOS transistor Q8 conducts, thereby pulling down the discharge control DSG to prevent the second NMOS transistor Q2 from being burned out. It should also be noted that in this embodiment, the reason why the second NMOS transistor Q2 needs to be controlled by the discharge control DSG signal is that the body diode of the second NMOS transistor Q2 will cause the battery voltage to backflow to the charging port. If the second NMOS transistor Q2 is controlled by the charge control CHARGE+ signal, the voltage in the open state of the charge control CHARGE+ signal is the voltage of the power supply module + 10V. That is, if the voltage of the power supply module is 16V, then the voltage in the open state of the charge control CHARGE+ signal is 26V, and the closed state is the battery voltage. Due to the body diode in the second NMOS, this closed voltage characteristic cannot turn off the second NMOS. Instead, the discharge control DSG is used to control the second NMOS. The voltage in the open state of the discharge control DSG is the voltage of the power supply module + 10V. That is, if the voltage of the power supply module is 16V, then the voltage in the open state of the discharge control DSG is 26V, and the closed state is the voltage of the PACK pin, and the PACK pin is exactly the source of the second NMOS. This characteristic can ensure that the second NMOS is turned off.

[0033] Please refer to Figure 2 and Figure 3, in an embodiment, such as this embodiment, the battery management module 13 includes an eleventh PMOS transistor Q11, a twelfth NMOS transistor, and a second diode D2. The MCU module 14 is connected to the wake-up pin in the battery management module 13 through a wake-up IO port via the twelfth NMOS transistor, the eleventh PMOS transistor Q11, and the second diode D2. Specifically, the battery management module 13 further includes a twenty-sixth resistor R26. The MCU module 14 is connected to the wake-up pin PACK in the battery management module 13 through the wake-up IO port PRES_EN in sequence via the twelfth NMOS transistor, the eleventh PMOS transistor Q11, the second diode D2, and the twenty-sixth resistor R26. More specifically, when it is necessary to wake up the battery management module 13, the voltage 4P_POWER of the power supply module 11 passes through the eleventh PMOS transistor Q11, and the voltage 4P_POWER of the power supply module 11 reaches VRST. VRST is then connected to the PACK pin through an anti-backflow second diode D2 and the twenty-sixth resistor R26. When the voltage on the PACK pin is greater than 3V, the battery management module 13 can be woken up.

[0034] Please refer to Figure 4 , in an embodiment, such as this embodiment, the charging and discharging device 10 further includes a buck module 15 and a wireless receiving module 16. The buck module 15 is connected to the power supply module 11, the wireless receiving module, and the MCU module 14 to reduce the voltage of the power supply module 11 to obtain a supply voltage, and supply power to the wireless receiving module 16 and the MCU module 14 through the supply voltage. It should be noted that the buck module 15 is

[0035] an LDO (Low Dropout Regulator) module. Its main function is to stably convert a higher input voltage into a lower output voltage while maintaining the stability of the output voltage, even when the input voltage or load conditions change. It can be understood that in this embodiment, the reason for selecting the LDO module as the buck module 15 is that the LDO linear voltage regulator has a lower quiescent current than the DCDC switching voltage regulator. In this embodiment, the voltage of the power supply module 11 is stepped down to 3.3V by the buck module 15 for the MCU module 14 and the wireless receiving module 16 to work. It should also be noted that in this embodiment, as Figure 4As shown, the wireless receiving module 16 is an infrared sensor; the charging and discharging device 10 further includes a temperature sensor and a power supply switch. The infrared sensor, the temperature sensor, and the power supply switch are U4, R62, and Q13 respectively. The power supply circuit where U4 and R62 are located is controlled by Q13, and Q13 is only turned on after the MCU module 14 is awakened, reducing the sleep power consumption. More specifically, in practical applications, when 3V3_EN is at a low level, Q13 is turned on.

[0036] Please refer to Figure 5 , in an embodiment, such as this embodiment, the charging and discharging device 10 further includes a storage discharge module 17. The storage discharge module 17 includes a seventh NMOS transistor Q7, a fourth resistor R4, and a fifth resistor R5. The gate of the seventh NMOS transistor Q7 is connected to the MCU module 14, and the drain of the seventh NMOS transistor Q7 is connected to the power supply module 11 through the fifth resistor R5 and the fourth resistor R4. It should be noted that in this embodiment, if the power supply module 11 needs to be stored for a long time, that is, if the battery needs to be stored for a long time, the battery power needs to be discharged to 50-80% of its capacity. Therefore, in this embodiment, a DSG_EN network is added to the charging and discharging device 10 to control two discharge resistors, namely the fourth resistor R4 and the fifth resistor R52, for the situation where the drone is fully charged and then stored in the warehouse without being used for a long time. At the same time, a temperature sensor R62 is added to detect the temperature of the air around the two discharge resistors. When the surrounding air temperature is too high, the discharge is turned off and waits until the temperature drops before turning on again until the battery voltage is lower than the preset voltage. It should also be noted that in this embodiment, the temperature sensor is preferably an NTC thermistor, and other low-power resistors can also be used as temperature sensors.

[0037] Refer to Figure 6 , Figure 6 is a flowchart showing a charging and discharging method for a drone cluster provided by an embodiment of the present invention. The charging and discharging method for the drone cluster is applied to a charging and discharging system. The charging and discharging system includes the above-mentioned charging and discharging device. It should be noted that in this embodiment, as Figure 7 shown, the charging and discharging system further includes an electrical device, a battery pack connector, and a charging contact. The electrical device is connected to the battery pack connector, the battery pack connector is connected to the discharge module, and the charging contact is connected to the charging module. The following further details the specific implementation steps of the charging and discharging method for the drone cluster of the present invention with this method. As Figure 6 shown, the method includes steps S110-S130:

[0038] S110. If a shutdown command is received, control the battery management module to enter the sleep mode or the off mode, and control the MCU module to enter the sleep mode;

[0039] S120. If the wake-up time of the MCU module is reached, turn on the power supply switch of the wireless receiver;

[0040] S130. If a power-on command is received within the preset waiting reception time, control the MCU module to exit the sleep mode, and control the MCU module to wake up the battery management module in the sleep mode or the off mode.

[0041] In the embodiment of the present invention, when the charge and discharge system receives a shutdown command, that is, when it detects that the electrical device has been shut down, it controls the battery management module to enter the sleep mode or the off mode, and controls the MCU module to enter the sleep mode; because the MCU module is provided with a timing wake-up function, when the wake-up time of the MCU module is reached, the power supply switch of the wireless receiver is turned on to receive the power-on command; if a power-on command is received within the preset waiting reception time, control the MCU module to exit the sleep mode, and control the MCU module to wake up the battery management module in the sleep mode or the off mode. It should be noted that in this embodiment, both the MCU module and the wireless receiver are low-power, and the wireless receiver is an infrared sensor.

[0042] Further, as Figure 8As shown, after step S120, steps S130 - S140 are further included: S130. If the power - on command is not received within the preset waiting and receiving time, obtain the cumulative waiting duration and the voltage of the power supply module; S140. Control the MCU module and the storage discharge module according to the cumulative waiting duration and the voltage of the power supply module. It should be noted that in this embodiment, step S140 is specifically: determine whether the cumulative waiting duration is greater than the preset cumulative waiting duration. If the cumulative waiting duration is greater than the preset cumulative waiting duration, then continue to determine whether the voltage of the power supply module is greater than the preset voltage; if the voltage of the power supply module is greater than the preset voltage, control the MCU module to exit the sleep mode, and control the fourth resistor and the fifth resistor in the storage discharge module to discharge; that is, if the cumulative waiting duration is greater than the preset cumulative waiting duration and the voltage of the power supply module is greater than the preset voltage, control the MCU module to exit the sleep mode, and control the fourth resistor and the fifth resistor in the storage discharge module to discharge; obtain the air temperature by using a temperature sensor to measure the temperature around the fourth resistor and the fifth resistor, and control the MCU and the storage discharge module according to the air temperature, the voltage of the power supply module, and the preset voltage. It should be noted that in this embodiment, if the cumulative waiting duration is not greater than the preset cumulative waiting duration or the voltage of the power supply module is not greater than the preset voltage, return to execute the step of controlling the MCU module to enter the sleep mode.

[0043] Further, the step of controlling the MCU and the storage discharge module according to the air temperature, the voltage of the power supply module, and the preset voltage includes: if the air temperature is greater than the preset air temperature, indicating that the temperature around the fourth resistor and the fifth resistor is too high, then control the fourth resistor and the fifth resistor in the storage discharge module not to discharge, and execute the step of controlling the MCU module to enter the sleep mode; if the air temperature is not greater than the preset air temperature and the voltage of the power supply module is less than the preset voltage, indicating that the temperature around the fourth resistor and the fifth resistor is not high and the battery voltage reaches the preset voltage for storage, then execute the step of controlling the fourth resistor and the fifth resistor in the storage discharge module not to discharge; if the air temperature is not greater than the preset air temperature and the voltage of the power supply module is not less than the preset voltage, indicating that the temperature around the fourth resistor and the fifth resistor is not high and the battery voltage has not reached the preset voltage for storage, then execute the step of controlling the fourth resistor and the fifth resistor in the storage discharge module to discharge, and thus continue to discharge.

[0044] In summary, the charging and discharging device and the charging and discharging method for a drone cluster provided by the present invention. Among them, the charging and discharging device can charge the power supply module and enable the power supply module to supply power to the electrical equipment by setting a mutually separated charging module and discharging module, that is, the charging and discharging functions are realized; the MCU module wakes up the battery management module in the sleep mode or off mode to charge or discharge the power supply module, and waking up the charging and discharging function is very time-saving and labor-saving. Specifically, the PMOS transistor of the charging module and the NMOS transistor in the discharging module are changed from series connection in the prior art to parallel connection, realizing the mutual separation of the charging module and the discharging module, realizing the independent management of charging and discharging, and enabling the battery to be used without being removable; introducing a low-power MCU module to control the battery management module, realizing low power consumption and wireless wake-up, canceling the heavy work of manually pressing the buttons one by one for a large number of drones in the cluster to wake up, and waking up the charging and discharging function is very time-saving and labor-saving; by storing the automatic power consumption function of the discharging module when supporting long-term storage at full charge, discharging to a voltage value suitable for storage for storage can extend the battery life. The charging and discharging device disclosed by the present invention solves the problem of time-consuming and laborious when waking up the charging and discharging function of the existing drone cluster.

[0045] As described above, the above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A charge and discharge device, characterized in that, Comprising: A power supply module; A charge-discharge module, which includes a separated charge module and a discharge module. Both the charge module and the discharge module are connected to the power supply module to charge the power supply module and enable the power supply module to supply power to an electrical device connected to a charging device; A battery management module, which is connected to the charge module, the discharge module, and the power supply module. The battery management module is used to control the opening and closing of the charge module and the discharge module; An MCU module, which is connected to the battery management module and the power supply module. The MCU module is used to wake up the battery management module in a sleep mode or a shutdown mode to charge or discharge the power supply module.

2. The charge and discharge device according to claim 1, wherein The discharge module includes a first PMOS transistor and a fourth PMOS transistor connected in parallel. The power supply module supplies power to the electrical device through the first PMOS transistor and the fourth PMOS transistor.

3. The charge and discharge device according to claim 1, wherein The charge module includes a second NMOS transistor and a third NMOS transistor connected to the second NMOS transistor in a back-to-back structure. The power supply module is charged through the second NMOS transistor and the third NMOS transistor via a charging contact.

4. The charge and discharge device according to claim 1, characterized in that, The battery management module includes an eleventh PMOS transistor, a twelfth NMOS transistor, and a second diode. The MCU module is connected to a wake-up pin in the battery management module through a wake-up IO port via the twelfth NMOS transistor, the eleventh PMOS transistor, and the second diode.

5. The charge and discharge device according to claim 1, wherein The charge-discharge device further includes a buck module and a wireless receiving module. The buck module is connected to the power supply module, the wireless receiving module, and the MCU module to reduce the voltage of the power supply module to obtain a supply voltage, and supply power to the wireless receiving module and the MCU module through the supply voltage.

6. The charge and discharge device according to claim 1, characterized in that, The charge-discharge device further includes a storage discharge module. The storage discharge module includes a seventh NMOS transistor, a fourth resistor, and a fifth resistor. The gate of the seventh NMOS transistor is connected to the MCU module, and the drain of the seventh NMOS transistor is connected to the power supply module through the fifth resistor and the fourth resistor.

7. A charging and discharging method for a drone swarm, applied to a charging and discharging system, the charging and discharging system comprising the charging and discharging device according to any one of claims 1-6, characterized in that, Comprising: If a shutdown command is received, control the battery management module to enter a sleep mode or a shutdown mode, and control the MCU module to enter the sleep mode; If the wake-up time of the MCU module is reached, turn on the power supply switch of the wireless receiver; If a startup command is received within a preset waiting reception time, control the MCU module to exit the sleep mode, and control the MCU module to wake up the battery management module in the sleep mode or the shutdown mode.

8. The charging and discharging method of the UAV cluster according to claim 7, wherein After the step of if the wake-up time of the MCU module is reached, turn on the power supply switch of the wireless receiver, further including: If the startup command is not received within the preset waiting reception time, obtain the cumulative waiting duration and the voltage of the power supply module; Control the MCU module and the storage discharge module according to the cumulative waiting duration and the voltage of the power supply module.

9. The charging and discharging method of the UAV cluster according to claim 8, wherein, The step of controlling the MCU module and the storage discharge module according to the cumulative waiting duration and the voltage of the power supply module includes: If the cumulative waiting duration is greater than a preset cumulative waiting duration and the voltage of the power supply module is greater than a preset voltage, control the MCU module to exit the sleep mode and control the fourth resistor and the fifth resistor in the storage discharge module to discharge; Obtain the air temperature by getting the temperature around the fourth resistor and the fifth resistor, and control the MCU and the storage discharge module according to the air temperature, the voltage of the power supply module, and the preset voltage.

10. The charging and discharging method of the drone swarm according to claim 9, wherein The step of controlling the MCU and the storage discharge module according to the air temperature, the voltage of the power supply module, and the preset voltage includes: If the air temperature is greater than a preset air temperature, control the fourth resistor and the fifth resistor in the storage discharge module not to discharge, and execute the step of controlling the MCU module to enter the sleep mode; If the air temperature is not greater than the preset air temperature and the voltage of the power supply module is less than the preset voltage, execute the step of controlling the fourth resistor and the fifth resistor in the storage discharge module not to discharge; If the air temperature is not greater than the preset air temperature and the voltage of the power supply module is not less than the preset voltage, execute the step of controlling the fourth resistor and the fifth resistor in the storage discharge module to discharge.

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