CN213341711U - Power management system of patrol unmanned aerial vehicle - Google Patents

Abstract

A power management system of a patrol unmanned aerial vehicle comprises a wireless communication module, a charging management module and a battery module; the wireless communication module is connected with the cloud server through an antenna; the charging management module is connected with the battery module; the charging completion indicating terminal and the charging state indicating terminal of the charging management module are both connected with the wireless communication module; the control output end of the wireless communication module is connected with the relay; the battery module supplies power to the wireless communication module and each electrical component of the unmanned aerial vehicle through the power converter; the battery module still supplies power for unmanned aerial vehicle's treater through power converter and relay. The utility model can reduce the man-made battery management link in the charging process of the unmanned aerial vehicle so as to achieve the purpose of saving manpower; on the other hand, the consumption that can greatly reduced battery module effectively prolongs patrol unmanned aerial vehicle battery life-span, increases patrol unmanned aerial vehicle standby time.

Description

Power management system of patrol unmanned aerial vehicle

Technical Field

The utility model relates to an unmanned air vehicle technique field, especially a patrol unmanned aerial vehicle power management system.

Background

A Battery Management System (BMS) refers to how power is efficiently distributed to the various components of the system. Power management is critical for mobile devices that rely on battery power. By reducing the energy consumption of the components when idle, an excellent power management system can extend battery life by a factor of two or three. The battery voltage is 3.7V per battery, but when it is buffered it rises to 4.2V and when it discharges it drops to 3.3V. However, if the voltage is higher or lower than the reference voltage for a long time, the battery may be swelled or become unusable, and maintaining 3.5V to 3.85V at all times helps to prolong the battery life. In a typical drone system, many different components (e.g., propulsion system, processors, and sensors) may all have different voltage and load requirements. Different parts of the system task: take-off, landing, hover, will also have different power curves. This means that the battery will be subjected to continuously varying loads and there are various requirements on the battery. Therefore, the power management system of the unmanned aerial vehicle needs to provide corresponding power management systems for different use scenes so as to solve the power supply problem of different components.

The patent with the application number of [201420288845.0] provides "a power supply system who is applied to unmanned aerial vehicle automatic charging", through rectifier inverter and wireless transmitter with the unmanned aerial vehicle of battery mesoelectricity wireless transmission for the executive task, the unmanned aerial vehicle that need not the executive task returns at the in-process of executive task and charges, has improved unmanned aerial vehicle's result of use. The patent application No. 201821569648.0 proposes a battery management system for a tethered drone, which can prevent the main power converter from frequently charging the backup battery, prolong the service life of the backup battery, and eliminate the need to add an additional circuit to absorb the energy of the back electromotive force.

The above patents give detailed designs to the charging system of the unmanned aerial vehicle according to different scenes, however, the charging system of the first type of unmanned aerial vehicle has simple application scenes, fewer components of the unmanned aerial vehicle, low complexity of power supply requirements, and is not suitable for patrolling unmanned aerial vehicle scenes with more components; the second type of unmanned aerial vehicle charging system is a tethered unmanned aerial vehicle, the power supply of the tethered unmanned aerial vehicle is provided to the airborne equipment by a ground power supply through a transmission cable, and the battery power supply is different from the requirement of the main battery power supply of the patrol unmanned aerial vehicle as a backup scheme. At present, efficient unmanned aerial vehicle battery management system design schemes for patrolling and with more components are lacked.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the above-mentioned not enough of prior art and providing a low power dissipation, it is simple to realize, long service life's patrol unmanned aerial vehicle power management system.

The technical scheme of the utility model is that: a power management system of a patrol unmanned aerial vehicle comprises a wireless communication module, a charging management module and a battery module; the wireless communication module is connected with the cloud server through an antenna; the charging management module is connected with the battery module; the charging completion indicating terminal and the charging state indicating terminal of the charging management module are both connected with the wireless communication module; the control output end of the wireless communication module is connected with the relay; the battery module supplies power to the wireless communication module and each electrical component of the unmanned aerial vehicle through the power converter; the battery module still supplies power for unmanned aerial vehicle's treater through power converter and relay.

Further, the alternating current of the transmitting coil output of the charging base that charges to unmanned aerial vehicle is connected with the charging management module through the charging rectification module, the voltage output end of the charging management module is connected with the battery module through the charging protection module.

Further, the wireless communication module is an Air724UG module, and is provided with a USIM card interface, a USB interface, a universal serial port interface, an antenna interface, a network indicator light for indicating a network state, and a key switch for starting a USB function.

Further, the wireless communication module is connected with an antenna through an antenna interface and is communicated with the cloud server; the wireless communication module is connected with the patch SIM card through the USIM card interface.

Furthermore, the wireless communication module is connected with a USB concentrator through a USB interface, and a plurality of USB interfaces are expanded through the USB concentrator.

Further, the wireless communication module carries out communication connection with unmanned aerial vehicle's treater through the USB interface.

Furthermore, a universal serial port interface of the wireless communication module is connected with a multi-channel RS-232 line driver/receiver through a voltage converter.

Further, the power converter comprises a 24V to 12V buck regulator, a 12V to 5V buck converter, a 24V to 5V buck converter and a 5V to 4V linear regulator.

Further, the battery module supplies power to a flight controller of the unmanned aerial vehicle through a 24V-to-12V step-down voltage stabilizer and a 12V-to-5V step-down converter in sequence; the battery module supplies power to a tripod head of the unmanned aerial vehicle through a 24V-to-12V step-down voltage stabilizer; the battery module changes 12V step-down stabiliser and relay through 24V in proper order and supplies power for unmanned aerial vehicle's treater. The battery module supplies power to the wireless communication module through a 24V-to-5V buck converter and a 5V-to-4V linear voltage stabilizer in sequence.

Further, the charging rectification module is a charging rectification plate; the charging protection module is a charging protection plate.

The utility model has the advantages that:

(1) in the charging process, the charging state is connected with the wireless communication module through the charging completion indicating end and the charging state indicating end of the charging management module, so that the charging state of the unmanned aerial vehicle battery module is accurately acquired, manual battery management links in the charging process of the unmanned aerial vehicle are reduced, and the purpose of saving manpower is achieved;

(2) the wireless communication module is continuously connected with the cloud server, so that the system is low in power consumption and simple to implement; when unmanned aerial vehicle was out of work promptly, only the wireless communication module keeps starting up and keeps being connected with cloud ware. When the cloud server issues the unmanned aerial vehicle task, the wireless communication module receives the task instruction to start a main power supply system of the unmanned aerial vehicle, namely, the wireless communication module controls the relay to act to start a processor of the unmanned aerial vehicle, so that electrical components such as a holder, a flight controller and the like are controlled, the power consumption of the battery module can be greatly reduced, the service life of a battery of the patrol unmanned aerial vehicle is effectively prolonged, and the standby time of the patrol unmanned aerial vehicle is prolonged;

(3) the wireless communication module passes through USB interface connection unmanned aerial vehicle's treater, can be so that pass data each other between unmanned aerial vehicle and cloud ware or the computer, and the USB interface can directly transmit data, need not to carry out level conversion, simple structure.

Drawings

Fig. 1 is a schematic block circuit diagram of an embodiment of the present invention;

fig. 2 is a power supply block diagram of the battery module according to the embodiment of the present invention.

Detailed Description

The invention will be described in further detail with reference to the drawings and specific examples.

As shown in fig. 1: a power management system of a patrol unmanned aerial vehicle comprises a wireless communication module, a charging management module and a battery module; the charging system comprises a charging base, a charging management module, a charging protection module and a battery module, wherein alternating current output by a transmitting coil of the charging base for charging the unmanned aerial vehicle is connected with the charging management module through the charging rectification module; the charging completion indicating terminal and the charging state indicating terminal of the charging management module are both connected with the wireless communication module; the control output end of the wireless communication module is connected with the relay, and the wireless communication module is connected with the cloud server through an antenna; the battery module supplies power to the wireless communication module, the flight controller of the unmanned aerial vehicle and the holder through corresponding power converters; the battery module still supplies power for unmanned aerial vehicle's treater through corresponding power converter and relay.

In this embodiment, the wireless communication module is connected to the antenna through the antenna interface, and communicates with the cloud server. When unmanned aerial vehicle was out of work promptly, only the wireless communication module keeps starting up and keeps being connected with cloud ware. When the cloud server issues the unmanned aerial vehicle task, the wireless communication module receives the task instruction and starts a corresponding power supply system of the unmanned aerial vehicle.

In this embodiment, the wireless communication module is connected to the USB hub through the USB interface, and the USB hub can expand a plurality of USB interfaces to connect different devices. The wireless communication module can be through USB concentrator connection unmanned aerial vehicle's treater, can make and pass data each other between unmanned aerial vehicle and cloud ware or the computer.

In this embodiment, the wireless communication module is connected to the patch SIM card through the USIM card interface, so as to implement functions such as making a call.

In this embodiment, the universal serial port interface of the wireless communication module is connected to the multi-channel RS-232 line driver/receiver through the voltage converter, the level of the serial port side of the wireless communication module is converted into the RS232 level through the voltage converter, and the wireless communication module can be matched with the interface level of a computer and the like through the multi-channel RS-232 line driver/receiver.

Specifically, the wireless communication module of this embodiment is preferably an aegis Air724UG wireless communication module (hereinafter referred to as Air724UG module), and is a circuit board with a 4G universal network communication module, and further has a USIM card interface (supporting a USIM/SIM card), a USB interface, a universal serial interface, an antenna interface, a network indicator light for indicating a network state, and a key switch for starting a USB function. The Air724UG module is connected with an FPC patch antenna through an antenna interface, and is connected with a USB2.0 hub through a USB interface, and the USB2.0 hub can be expanded to have 4 USB2.0 interfaces. Preferably, the battery module is 6 series power batteries; the charging management module is preferably a charging management chip SLM6900, a charging completion indicating terminal pin and a charging state indicating terminal pin of the SLM6900 chip are both connected with the Air724UG module, a voltage input end of the SLM6900 chip is connected with a charging rectifying plate, and a voltage output end of the SLM6900 chip is connected with a charging protection plate. The voltage converter is a 2-bit bi-directional voltage level converter. The working power supply of the relay is 24V/120A, and the number of the relays can be one or more, and can be selected according to the number of components needing to be controlled.

In this embodiment, aforementioned power converter mainly includes that 24V changes 12V step-down voltage regulator, 12V changes 5V step-down converter, 24V changes 5V step-down converter and 5V changes 4V linear voltage regulator four kinds, and the battery module supplies power with each subassembly of wireless communication module and unmanned aerial vehicle through different power converter respectively, forms assorted power supply system. For example: the input end of the 24V-to-12V step-down voltage stabilizer is electrically connected with the positive electrode of 6 series power batteries by 24V voltage, and the output end voltage is 12V; the 12V-to-5V buck converter reduces the 12V voltage to 5V voltage; the input end of the 24V-to-5V step-down converter is electrically connected with 24V voltage of 6 serially connected power batteries, and the output end voltage is 5V; the 5V to 4V linear voltage regulator reduces the 5V voltage to 4V and provides voltage for an Air724UG module, a multi-channel RS-232 line driver/receiver and a 2-bit bidirectional voltage level converter; the opening control end of the 24V/120A relay is connected with a control pin of the Air724UG module, and the output voltage of 6 series power batteries is supplied with voltage through a 24V-to-12V step-down voltage regulator.

The charging process of the battery module of the unmanned aerial vehicle comprises the following steps:

a transmitting coil of the charging base sends a signal, the signal searches a receiving coil of the unmanned aerial vehicle, after the receiving coil is induced, electromagnetic induction is started, electrons (current) in the transmitting coil start to flow around the coil, and a magnetic field is generated; the electron of receiving coil can induce magnetic field, because magnetic field influence, the electron that sleeps in receiving coil begins to encircle the coil and flows, and the electron flow in receiving coil is the electric power for unmanned aerial vehicle battery powered. The method specifically comprises the following steps: alternating current output from the transmitting coil of the charging base needs to be rectified through a charging rectifying plate, namely Alternating Current (AC) is converted into Direct Current (DC) and is transmitted to a charging management module, constant current charging is carried out on the battery module through the charging management module, and the charging management module mainly controls charging voltage within a reasonable range while six batteries of the battery module are synchronously stored with electricity so as to achieve the purpose of prolonging the service life of the batteries. The voltage and current passing through the charge management module are processed by the battery protection board and then supplied to the battery module. The battery protection board is an integrated circuit board which plays a role in protecting the storage battery, and the lithium battery cannot be overcharged, overdischarged, overcurrent, short-circuit and ultra-high-temperature charging and discharging due to the fact that the lithium battery is made of materials, so that the battery can be prevented from being damaged to a certain extent by the battery protection board, the voltage balance of series batteries can be guaranteed, and the capacity of the batteries is improved. When the battery module finishes charging, the charging completion indication pin in the charging management module is pulled to a low level by the internal switch to indicate that charging is completed, otherwise, the battery module is in a high-resistance state. When the charging management module charges the battery, a charging state indication pin in the module is pulled to a low level by an internal switch to indicate that charging is in progress, otherwise, the pin is in a high impedance state, and two pins are connected with the Air724UG module to output charging state information to the Air724UG module.

The power supply process of the battery module of this embodiment is shown in fig. 2: the 6 series power batteries provide 24V power supply voltage for each component, and the power supply trend of the batteries is mainly divided into two parts: firstly, supplying power to each component through each power converter; and secondly, supplying power through a relay. Wherein, each subassembly mainly is flying accuse ware, cloud platform, treater, Air724UG module. The power supply process is respectively as follows:

(1) the battery module changes 12V step-down stabiliser and 12V through 24V in proper order and changes 5V step-down converter for patrol unmanned aerial vehicle's flying accuse ware power supply. Specifically, the 24V12A battery module is converted into 12V12A through the buck regulator LM2596S-12, and the 12V12A voltage current is converted into 5V2A through the synchronous buck converter RT7295A, so as to supply power to the flight controller.

(2) The battery module changes 12V step-down stabiliser through 24V and supplies power for patrol unmanned aerial vehicle's cloud platform. Specifically, the 24V12A battery module is converted into 12V12A through the step-down voltage regulator LM2596S-12 to supply power to the tripod head.

(3) The battery module supplies power to the processor through a 24V to 12V step-down voltage stabilizer and a relay in sequence. Specifically, the 24V12A battery module is converted into 12V12A through the step-down voltage regulator LM2596S-12, and then the power is supplied to the processor through the relay of 12V 10A.

(4) The battery module supplies power to the Air724UG module through a 24V to 5V buck converter and a 5V to 4V linear voltage regulator in sequence. Specifically, the 24V12A battery module is converted to 5V2A by a 24V to 5V buck converter SY8303AIC, and then to 4V2A by a linear regulator MIC29302WU, which in turn supplies power to an Air724UG module.

The present embodiment is necessary for controlling the charging and the power supply of the battery module and obtaining the charging or the power supply state of the battery module

In the charging process, the charging state is directly output to the Air724UG module through two output pins of the charging management module; during the battery power supply process, the Air724UG module controls the on-off of each relay, and in addition, the Air724UG module communicates with the processor of the unmanned aerial vehicle through a USB.

In summary, a low-power-consumption power management method which is consistent with the requirement of keeping continuous connection with a cloud server is provided for the charging management problem of the unmanned patrol unmanned aerial vehicle, namely when the unmanned aerial vehicle does not work, only the wireless communication module keeps starting and keeps being connected with the cloud server. When the cloud server issued the unmanned aerial vehicle task, the wireless communication module received the task instruction and opened the main power supply system of unmanned aerial vehicle, controlled the relay action promptly and opened unmanned aerial vehicle's treater to control devices such as cloud platform, flight control ware. The utility model discloses with strong points to the system planning is clear, realizes comparatively simply, has the characteristics of high-efficient reliable management power simultaneously, and fine protection the battery has prolonged battery life, effectively provides reliable operating voltage and electric current for each subassembly simultaneously, reduces unmanned aerial vehicle because of the possibility that the battery power problem leads to the trouble.

Claims (10)

1. A power management system of a patrol unmanned aerial vehicle is characterized by comprising a wireless communication module, a charging management module and a battery module; the wireless communication module is connected with the cloud server through an antenna; the charging management module is connected with the battery module; the charging completion indicating terminal and the charging state indicating terminal of the charging management module are both connected with the wireless communication module; the control output end of the wireless communication module is connected with the relay; the battery module supplies power to the wireless communication module and each electrical component of the unmanned aerial vehicle through the power converter; the battery module still supplies power for unmanned aerial vehicle's treater through power converter and relay.

2. The patrol unmanned aerial vehicle power management system of claim 1, wherein alternating current output by a transmitting coil of a charging base for charging the unmanned aerial vehicle is connected with a charging management module through a charging rectification module, and a voltage output end of the charging management module is connected with a battery module through a charging protection module.

3. A patrol unmanned aerial vehicle power management system according to claim 1 or 2, wherein the wireless communication module is an Air724UG module with a USIM card interface, a USB interface, a universal serial port interface, an antenna interface, a network indicator light for indicating a network state, and a key switch for starting a USB function.

4. A patrol unmanned aerial vehicle power management system according to claim 1 or 2, wherein the wireless communication module is connected with an antenna through an antenna interface, and is in communication with a cloud server; the wireless communication module is connected with the patch SIM card through the USIM card interface.

5. A patrol unmanned aerial vehicle power management system according to claim 1 or 2, wherein the wireless communication module is connected to a USB hub via a USB interface, and a plurality of USB interfaces are extended through the USB hub.

6. A patrol unmanned aerial vehicle power management system according to claim 1 or 2, wherein the wireless communication module is in communication connection with the processor of the unmanned aerial vehicle through a USB interface.

7. A patrol unmanned aerial vehicle power management system according to claim 1 or 2, wherein the universal serial port interface of the wireless communication module is connected to a multi-channel RS-232 line driver/receiver via a voltage converter.

8. A patrol drone power management system according to claim 1 or 2, wherein the power converters include a 24V to 12V buck regulator, a 12V to 5V buck converter, a 24V to 5V buck converter and a 5V to 4V linear regulator.

9. The patrol unmanned aerial vehicle power management system of claim 8, wherein the battery module supplies power to a flight controller of the unmanned aerial vehicle through a 24V to 12V buck regulator and a 12V to 5V buck converter in sequence; the battery module supplies power to a tripod head of the unmanned aerial vehicle through a 24V-to-12V step-down voltage stabilizer; the battery module supplies power to a processor of the unmanned aerial vehicle through a 24V-to-12V step-down voltage stabilizer and a relay in sequence; the battery module supplies power to the wireless communication module through a 24V-to-5V buck converter and a 5V-to-4V linear voltage stabilizer in sequence.

10. The patrol unmanned aerial vehicle power management system of claim 2, wherein the charging rectification module is a charging rectification plate; the charging protection module is a charging protection plate.

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