Automatic charging circuit of unmanned aerial vehicle

Abstract

The utility model relates to the technical field of unmanned aerial vehicles, and discloses an automatic charging circuit for an unmanned aerial vehicle, which comprises a first charging module, a second charging module, a first battery, a second battery and a comparison circuit, the output end of the first charging module is electrically connected with the charging end of the first battery; the output end of the second charging module is electrically connected with the charging end of the second battery; the charging end of the first battery is connected to the first end of the comparison circuit, and the charging end of the second battery is connected to the second end of the comparison circuit; the output end of the comparison circuit is connected to the signal input end of the control IC; the control end of the control IC is connected to the control end of the first charging module and the control end of the second charging module. The unmanned aerial vehicle charging system can improve the flexibility of automatic charging of the unmanned aerial vehicle.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles (UAVs), and in particular to an automatic charging circuit for UAVs. Background Art

[0002] The drone hangar provides storage, data transmission, and basic charging for drones. Drones have two batteries. To ensure flight safety, they typically take off only when the batteries are at similar levels. If a drone is parked for too long or the batteries have different durability, the batteries will reach different levels, preventing the drone from taking off.

[0003] In view of this, a drone automatic charging circuit is needed that can ensure that the two batteries in the drone maintain the same power state. Utility Model Content

[0004] In view of this, the utility model provides an automatic charging circuit for a drone to improve the flexibility of drone charging.

[0005] In a first aspect, the utility model provides an automatic charging circuit for an unmanned aerial vehicle, the circuit comprising a first charging module, a second charging module, a first battery, a second battery, and a comparison circuit; the output end of the first charging module is electrically connected to the charging end of the first battery; the output end of the second charging module is electrically connected to the charging end of the second battery; the charging end of the first battery is connected to the first end of the comparison circuit, and the charging end of the second battery is connected to the second end of the comparison circuit; the output end of the comparison circuit is connected to the signal input end of the control IC; the control end of the control IC is respectively connected to the control end of the first charging module and the control end of the second charging module.

[0006] In this embodiment, separate first and second charging modules are provided to improve the charging efficiency of the drone. Connecting the charging terminals of the first and second batteries to a comparison circuit allows the comparison circuit to detect the voltage difference between the first and second batteries. Adjusting the operating states of the first and second charging modules based on the voltage difference improves the charging flexibility of the drone.

[0007] In an optional embodiment, the comparison circuit includes a target comparator; the charging terminal of the first battery is connected to the non-inverting input terminal of the target comparator; and the charging terminal of the second battery is connected to the inverting input terminal of the target comparator.

[0008] In this embodiment, a target comparator is provided in the comparison circuit to increase the speed of battery detection. The charging terminals of the first and second batteries are connected to the non-inverting and inverting input terminals of the target comparator, respectively. This can improve the accuracy of battery detection.

[0009] In an optional implementation, the positive power supply terminal of the target comparator is connected to the power supply voltage; and the negative power supply terminal of the target comparator is grounded.

[0010] In this embodiment, grounding the negative power supply of the target comparator can simplify circuit design and improve the electromagnetic compatibility of the circuit.

[0011] In an optional implementation, the positive power supply terminal of the target comparator is electrically connected to the control IC; and the negative power supply terminal of the target comparator is grounded.

[0012] In this embodiment, the positive power supply terminal of the target comparator is electrically connected to the control IC, and the operating state of the target comparator can be controlled by the control IC, thereby improving the flexibility of the automatic charging circuit of the drone.

[0013] In an optional embodiment, the first battery and the second battery have the same specifications.

[0014] In this embodiment, the first battery and the second battery have the same specifications, which can improve the charging efficiency of automatic charging.

[0015] In an optional embodiment, when the voltage of the first battery is greater than the voltage of the second battery, the control IC outputs a start signal for the second charging module; when the voltage of the second battery is greater than the voltage of the first battery, the control IC outputs a start signal for the first charging module.

[0016] In this embodiment, by comparing the voltages of the first battery and the second battery and controlling the start-up of the first charging module and the second charging module, the charging efficiency can be improved, and the first battery and the second battery are in the same voltage state, so that the drone flight mission can be executed at any time.

[0017] In an optional embodiment, the control IC also has a data output terminal; the data output terminal is connected to the drone library main system to transmit the charging status information of the drone battery; the charging status information is used to indicate the charging status of the first battery and the second battery.

[0018] In this embodiment, the drone library obtains the charging status information of the drone battery, which can improve the efficiency of drone battery management. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 1 This is a circuit design diagram of a drone charging circuit according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0021] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; they may refer to internal connections between two components; they may refer to wireless connections or wired connections. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0024] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0025] With the increasing application of drone technology in patrol and security operations, the limitations of drone endurance have become a focus of industry attention. Drones are typically equipped with two backup batteries to support long-duration or high-intensity missions. A significant voltage difference between the two batteries can lead to performance degradation during flight due to uneven power distribution, potentially causing safety incidents. Therefore, to ensure flight safety, drones undergo rigorous battery status checks before takeoff to ensure that both batteries maintain similar charge levels.

[0026] In view of this, the utility model provides an automatic charging circuit for a drone. Figure 1This is a circuit diagram of the automatic charging circuit for drones according to an embodiment of the present utility model. By providing two charging modules, two batteries can be charged independently, improving the drone's charging efficiency. A comparison circuit can be used to detect the voltage difference between the two batteries. Based on this voltage difference, charging instructions can be adjusted to remind personnel to check battery status and connection status. By controlling the operating status of the first and second charging modules through a control IC, charging efficiency can be improved and performance can be optimized.

[0027] In this embodiment, an automatic charging circuit for a drone is provided, which includes a first charging module, a second charging module, a first battery, a second battery, and a comparison circuit; the output end of the first charging module is electrically connected to the charging end of the first battery; the output end of the second charging module is electrically connected to the charging end of the second battery; the charging end of the first battery is connected to the first end of the comparison circuit, and the charging end of the second battery is connected to the second end of the comparison circuit; the output end of the comparison circuit is connected to the signal input end of the control IC; and the control end of the control IC is respectively connected to the control end of the first charging module and the control end of the second charging module.

[0028] After the drone returns to the drone hangar, the drone's first and second batteries are connected to the drone's automatic charging circuit. Once connected, the comparison circuit collects battery information from the first and second batteries, including battery voltage and battery charge. After collecting this information, the comparison circuit sends it to the control IC. The control IC analyzes the battery information and, based on the analysis, generates charging instructions. These instructions are then sent to the first and second charging modules, which then control the charging modules to execute the instructions.

[0029] In a practical application, the battery information includes the battery power. The control IC can determine the charge capacity of the battery according to the battery power and the nominal power of the battery, and generate charging instructions for the first charging module and the second charging module according to the charge capacity.

[0030] Separately providing a first and second charging module can improve the charging efficiency of the drone. Connecting the charging terminals of the first and second batteries to a comparison circuit allows the comparison circuit to detect the voltage difference between the first and second batteries. Adjusting the operating states of the first and second charging modules based on the voltage difference improves the charging flexibility of the drone.

[0031] In a specific embodiment, the comparison circuit includes a target comparator; the charging terminal of the first battery of the target comparator is connected to the non-inverting input terminal of the target comparator; and the charging terminal of the second battery is connected to the inverting input terminal of the target comparator.

[0032] The comparison circuit is not limited to any specific circuits and may include, in addition to the target comparator, capacitors, resistors, and other components. The placement of the capacitors and resistors is not restricted; a capacitor may be added to the power supply terminal of the target comparator to filter out noise and fluctuations on the power line. An amplifier circuit may also be added to the comparison circuit to detect the slight voltage difference between the first and second batteries, thereby improving the accuracy of subsequent instruction generation.

[0033] The charging terminals of the first and second batteries are connected to the non-inverting and inverting inputs of the target comparator, respectively. The target comparator detects whether there is a voltage difference between the two batteries based on the magnitude of the two input voltages. When the target comparator outputs a high or low level, it indicates a voltage difference between the first and second batteries. Upon receiving the target comparator's output, the control IC generates a charging command based on the result, increasing the charge level of the battery with the lower voltage.

[0034] In an actual application, the target comparator outputs a high voltage, indicating that the voltage of the first battery is higher than the voltage of the second battery. The control IC controls the first charging module to stop charging and the second charging module to continue charging until the voltages of the first battery and the second battery are the same.

[0035] In an actual application, there is a voltage difference between the first battery and the second battery. After receiving the output of the target comparator, the control IC issues an alarm message to remind the staff to check the installation and usage of the first battery and the second battery.

[0036] Setting up a target comparator in the comparison circuit can increase the speed of battery detection. Connecting the charging terminals of the first and second batteries to the non-inverting and inverting inputs of the target comparator, respectively, can improve the accuracy of battery detection.

[0037] In a specific embodiment, the positive power supply terminal of the target comparator is connected to the power supply voltage; and the negative power supply terminal of the target comparator is grounded.

[0038] Connecting the negative power supply of the target comparator to ground can simplify circuit design and improve the electromagnetic compatibility of the circuit.

[0039] In a specific embodiment, the positive power supply terminal of the target comparator is electrically connected to the control IC; and the negative power supply terminal of the target comparator is grounded.

[0040] The control IC is connected to the positive power supply terminal of the target comparator. The control IC can directly control the target comparator's startup and shutdown. When the circuit is not connected to the drone, the target comparator can be turned off to save energy. When the circuit is connected to the drone, the target comparator is turned on to achieve real-time monitoring of the drone's battery.

[0041] By electrically connecting the positive power supply terminal of the target comparator to the control IC, the operating state of the target comparator can be controlled by the control IC, thereby improving the flexibility of the drone's automatic charging circuit.

[0042] In one embodiment, the first battery and the second battery have the same specifications.

[0043] The specifications of the first battery and the second battery are not restricted, and suitable batteries can be selected according to the application requirements of the drone.

[0044] The first battery and the second battery have the same specifications, which can improve the charging efficiency of automatic charging.

[0045] In a specific embodiment, when the voltage of the first battery is greater than the voltage of the second battery, the control IC outputs a start signal for the second charging module; when the voltage of the second battery is greater than the voltage of the first battery, the control IC outputs a start signal for the first charging module.

[0046] By comparing the voltages of the first battery and the second battery and controlling the start-up of the first charging module and the second charging module, the charging efficiency can be improved, and the first battery and the second battery are in the same voltage state, so that the UAV flight mission can be executed at any time.

[0047] In a specific embodiment, the control IC further has a data output terminal; the data output terminal is connected to the drone library main system to transmit the charging status information of the drone battery; the charging status information is used to indicate the charging status of the first battery and the second battery.

[0048] The data output terminal can be connected to the drone hangar main system in any manner, and can be wireless or wired. After receiving the drone battery charging status information, the drone hangar main system can record the information for subsequent tracing.

[0049] The drone library obtains the charging status information of the drone battery, which can improve the efficiency of drone battery management.

[0050] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. An automatic charging circuit for a drone, characterized in that: The circuit includes a first charging module, a second charging module, a first battery, a second battery and a comparison circuit; The output end of the first charging module is electrically connected to the charging end of the first battery; The output end of the second charging module is electrically connected to the charging end of the second battery; The charging end of the first battery is connected to the first end of the comparison circuit, and the charging end of the second battery is connected to the second end of the comparison circuit; the output end of the comparison circuit is connected to the signal input end of the control IC; the control end of the control IC is respectively connected to the control end of the first charging module and the control end of the second charging module.

2. The charging circuit according to claim 1, wherein: The comparison circuit includes a target comparator; The charging terminal of the first battery is connected to the non-inverting input terminal of the target comparator; A charging terminal of the second battery is connected to an inverting input terminal of the target comparator.

3. The charging circuit according to claim 2, wherein: The positive power supply terminal of the target comparator is connected to the power supply voltage; the negative power supply terminal of the target comparator is grounded.

4. The charging circuit according to claim 2, wherein: The positive power supply terminal of the target comparator is electrically connected to the control IC; the negative power supply terminal of the target comparator is grounded.

5. The charging circuit according to any one of claims 1 to 4, characterized in that: The first battery and the second battery have the same specifications.

6. The charging circuit according to claim 5, characterized in that: When the voltage of the first battery is greater than the voltage of the second battery, the control IC outputs a start signal for the second charging module; When the voltage of the second battery is greater than the voltage of the first battery, the control IC outputs a start signal for the first charging module.

7. The charging circuit according to claim 5, characterized in that: The control IC also has a data output terminal; the data output terminal is connected to the drone library main system to transmit the charging status information of the drone battery; the charging status information is used to indicate the charging status of the first battery and the second battery.

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