Circuit applied to charging housekeeper of unmanned aerial vehicle battery

Abstract

The utility model relates to the technical field of unmanned aerial vehicle battery charging, in particular to a circuit applied to a charging housekeeper of an unmanned aerial vehicle battery. Comprising a charging communication and control circuit, a control circuit, a battery communication circuit, a first charging and discharging circuit and a second charging and discharging circuit, and the second charging and discharging circuit comprises a second charging and discharging controller; through the synergistic effect of all the circuits, the microcontroller preferentially distributes the charging power to the charging and discharging circuit connected with the high-priority charging position, and it is ensured that the battery of the high-priority charging position can be fully charged rapidly. When the battery is fully charged, the microcontroller intelligently distributes the residual charging power to the other charging and discharging circuit connected with the conventional charging position, so that efficient charging of the battery at the conventional charging position is realized, and the problems of low charging efficiency, high cost and long charging time of a circuit structure in a charging housekeeper in the prior art are solved.

Description

Technical Field

[0001] This utility model relates to the field of drone battery charging technology, and in particular to a circuit for a charging manager for drone batteries. Background Technology

[0002] Modern charging systems for drones, action cameras, and portable video cameras are generally designed with multiple battery slots. The advantage of multiple slots is that they can accommodate more batteries simultaneously. By coordinating the switching of each battery slot through the charging system, users don't need to frequently replace fully charged batteries. The charging circuit topology of such charging systems generally falls into the following categories:

[0003] The first method uses a charging circuit with enough power to fully charge one battery at a time. The charging manager charges one battery at a time, and then switches to the next battery after it is fully charged. This process is repeated until all batteries are fully charged. However, this method takes the longest to charge and is very inefficient.

[0004] The second method also uses a charging circuit with sufficient power to support simultaneous charging of all battery slots. The charging manager charges a battery individually if the input power is insufficient to support parallel charging, and then switches to the next battery once it is fully charged. If the input power is sufficient for parallel charging, the battery voltage is sorted, and the battery with the lowest voltage is charged first. Once the voltage reaches the voltage of the next battery, it is then connected to the charging circuit for charging together, until all batteries are connected to the charging circuit and fully charged. However, this method takes too long to fully charge a single battery.

[0005] The third option is to equip each slot with a charging circuit. Each circuit can charge each battery at full power, and each charging circuit can charge independently. The charging manager determines whether to charge the batteries in turn or charge several batteries together based on the input power. However, this solution is too expensive.

[0006] In summary, the existing charging circuit structures of current charging devices for drones, action cameras, and portable imaging cameras suffer from low charging efficiency, high cost, and long charging time.

[0007] Therefore, the aforementioned technical problems need to be solved. Utility Model Content

[0008] In order to overcome the shortcomings of the existing technology, this utility model proposes a charging manager circuit for drone batteries. The purpose is to meet the user's multiple needs for charging efficiency, cost control and charging flexibility through a dual charging circuit design.

[0009] To solve the above-mentioned technical problems, the basic technical solution proposed by this utility model is as follows:

[0010] A circuit for a charging manager used in drone batteries includes: a charging communication and control circuit for interacting with an external power source;

[0011] A control circuit, comprising a microcontroller, a first terminal, a second terminal, and an output terminal;

[0012] The first terminal is electrically connected to the charging communication and control circuit and is used to receive a first voltage provided by an external power source;

[0013] The second end is connected to a battery communication circuit for receiving battery signals provided by the battery communication circuit.

[0014] A first charging and discharging circuit, the first charging and discharging circuit including a first charging and discharging controller;

[0015] A second charging and discharging circuit, the second charging and discharging circuit including a second charging and discharging controller;

[0016] The first charge / discharge controller and the second charge / discharge controller are both electrically connected to the output terminal of the control circuit, and the control circuit converts the battery signal received from the battery communication circuit into a current signal, which provides a control basis for the charge / discharge operation of the first charge / discharge circuit and the second charge / discharge circuit.

[0017] Furthermore, the output terminal of the first charging and discharging circuit is connected to the input terminal of the first switching circuit, and the output terminal of the first switching circuit is electrically connected to the first battery compartment circuit.

[0018] The signal terminal of the first battery compartment circuit is electrically connected to the input terminal of the battery communication circuit.

[0019] Furthermore, the output terminal of the second charging and discharging circuit is connected to the input terminal of the second switching circuit, and the output terminal of the second switching circuit is correspondingly electrically connected to the second battery compartment circuit.

[0020] The signal terminal of the second battery compartment circuit is electrically connected to the input terminal of the battery communication circuit.

[0021] Furthermore, the first charging / discharging circuit and the second charging / discharging circuit are connected in parallel with the microcontroller.

[0022] Furthermore, the first charging and discharging circuit also includes a first switching circuit, the output terminal of the first switching circuit is electrically connected to the input terminal of the first battery compartment circuit, and the signal terminal of the first battery compartment circuit is electrically connected to the input terminal of the battery communication circuit.

[0023] The second charging and discharging circuit also includes a second switching circuit, the output terminal of which is electrically connected to the input terminal of the second battery compartment circuit, and the signal terminal of the second battery compartment circuit is electrically connected to the input terminal of the battery communication circuit.

[0024] The first charging and discharging circuit and the second charging and discharging circuit are connected in parallel with the microcontroller.

[0025] Furthermore, the charging communication and control circuit includes a charging interface and a PD power negotiation controller;

[0026] The output terminal of the charging interface is electrically connected to the input terminal of the PD power negotiation controller, and the output terminal of the PD power negotiation controller is electrically connected to the first terminal.

[0027] Furthermore, it includes an AC-DC conversion circuit, the input terminal of which is electrically connected to an external power supply, and the output terminal of which is electrically connected to the first terminal.

[0028] Furthermore, the connection between the control circuit and the charging communication and control circuit, the first charging and discharging circuit, the second charging and discharging circuit, and the battery communication circuit is bidirectional.

[0029] The beneficial effects of this utility model are:

[0030] This utility model integrates two charging circuits, corresponding to a high-priority charging position and several regular charging positions, meeting users' multiple needs for charging efficiency, cost control, and charging flexibility. Specifically, it includes a charging communication and control circuit for interacting with an external power source; a control circuit including a microcontroller, a first terminal, a second terminal, and an output terminal; the first terminal is electrically connected to the charging communication and control circuit and receives a first voltage provided by the external power source; the second terminal is connected to a battery communication circuit and receives battery signals provided by the battery communication circuit; a first charging and discharging circuit including a first charging and discharging controller; and a second charging and discharging circuit including a second charging and discharging controller; both the first and second charging and discharging controllers are electrically connected to the output terminal of the control circuit and, under the command of the control circuit, precisely execute charging and discharging operations.

[0031] The microcontroller prioritizes allocating charging power to the charging / discharging circuit connected to the high-priority charging position, ensuring that the battery in the high-priority charging position can be quickly charged. Once the battery is fully charged, the microcontroller intelligently allocates the remaining charging power to another charging / discharging circuit connected to the regular charging position, achieving efficient charging of the battery in the regular charging position. This addresses the problems of low charging efficiency, high cost, and long charging time in the circuit structure of existing charging managers. Attached Figure Description

[0032] Figure 1 This is a circuit diagram of a charging system for drone batteries according to the present invention. Detailed Implementation

[0033] The following will be combined with the appendix Figure 1 The technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0034] In order to solve the problems of low charging efficiency, high cost and long charging time in the charging circuit of the existing charging manager technology.

[0035] The inventors have provided a circuit for a charging manager for drone batteries. This circuit prioritizes charging power to the charging / discharging circuits connected to high-priority charging positions, ensuring that batteries in high-priority charging positions can be quickly charged. Once the battery is fully charged, the microcontroller intelligently allocates the remaining charging power to another charging / discharging circuit connected to a regular charging position, achieving efficient charging of batteries in the regular charging position.

[0036] Detailed, such as Figure 1 As shown, the circuit includes the charging communication and control circuit 1, used for interacting with an external power source; obtaining power from the external power source to supply power to the charging assistant or transmitting power from the charging assistant to the external receiving device. The external power source includes power supply devices such as wall sockets and power banks. The external power source also includes receiving devices such as mobile phones.

[0037] The charging communication and control circuit 1 includes a charging interface 11, a PD power negotiation controller 12, and an AC-DC conversion circuit 13. The output terminal of the charging interface 11 is electrically connected to the input terminal of the PD power negotiation controller 12.

[0038] In this embodiment, the charging interface 11 is a USB-C interface, which is a multi-functional power input interface. It has bidirectional functionality; on one hand, it can receive external power input to charge the battery; on the other hand, under certain specific circumstances, such as when the battery is fully charged and the device requires it, it can also output power. For charging, it can connect to various power adapters that support USB-C interfaces to obtain power from external sources.

[0039] In this embodiment, the output of the USB-C interface is connected to the PD power negotiation controller 12 to transmit the charging power signal obtained from the power bank to the PD power negotiation controller 12. The PD power negotiation controller 12 transmits the received charging power signal to the control circuit 2, so that the control circuit 2 outputs a charging power that conforms to the current charging environment.

[0040] In this embodiment, the PD power negotiation controller 12 is a CH32X035 chip. After power input, the CH32X035 chip starts working and negotiates power with the external power supply. It can identify the power specifications of the external power supply and determine a safe and efficient charging power based on the needs of this charging assistant and the actual situation of the internal circuitry. For example, when power adapters of different power are connected, the PD power negotiation controller 12, i.e., CH32X035, will automatically negotiate a suitable power signal to ensure that the charging assistant can obtain sufficient power for charging operations without affecting charging efficiency or causing safety hazards due to excessively high or low power.

[0041] In another specific application scenario, the circuit obtains external power through an AC-DC conversion circuit 13, the main function of which is to convert alternating current (AC) to direct current (DC). Specifically, in this embodiment, the input terminal of the AC-DC conversion circuit is electrically connected to an external power supply.

[0042] In practical applications, when the external power source is AC, the AC-DC conversion circuit 13 converts it into DC power suitable for subsequent circuits, providing a stable power foundation for the entire charging system. For example, if there is a stable AC power outlet indoors, the charging system can be connected to the outlet to continuously power the charging system by converting AC to DC power through the AC-DC conversion circuit 13.

[0043] Furthermore, the circuit includes a control circuit 2, which in this embodiment includes a microcontroller 21, a first terminal 22, a second terminal 23, and an output terminal 24. The first terminal 22 is electrically connected to the charging communication and control circuit 1 and is used to receive a first voltage provided by an external power source. The second terminal 23 is connected to a battery communication circuit 5 and is used to receive battery signals supplied by the battery communication circuit 5. The output terminal 24 is connected to a first charging and discharging circuit 3 and a second charging and discharging circuit 4.

[0044] In this embodiment, the microcontroller 21 is a CH582M chip. The first terminal, second terminal, and output terminal of the microcontroller 21 are the first terminal 22, second terminal 23, and output terminal 24 of the control circuit 2. The first terminal 22 of the CH582M chip is electrically connected to the output terminal of the PD power negotiation controller to receive power negotiation information from the PD power negotiation controller 12CH32X035, and performs logic control on the battery path based on this information. During charging, the CH582M microcontroller monitors the battery's charging status in real time, including parameters such as battery voltage and current. For example, when the battery voltage is low, the microcontroller 21 will allocate power to the battery to allow it to receive more charging power.

[0045] In another application scenario, the first terminal 22 of the CH582M chip is connected to the output terminal of the AC-DC conversion circuit 13 to transmit the power provided by the external power source to the charging device.

[0046] Furthermore, the output terminal of the CH582M chip is connected to the first charging / discharging circuit 3 and the second charging / discharging circuit 4. The first charging / discharging circuit 3 includes a first charging / discharging controller 31; the second charging / discharging circuit 4 includes a second charging / discharging controller 41. In this embodiment, the first charging / discharging controller 31 and the second charging / discharging controller 41 are chip SC8813. Under the control of the CH582M microcontroller, the SC8813 chip can convert the input power into a voltage and current suitable for battery charging according to the charging requirements of different batteries.

[0047] It should be noted that, in this embodiment, the first charge-discharge controller 31 and the second charge-discharge controller 41 are both electrically connected to the output terminal of the control circuit 2, and the control circuit 2 converts the battery signal received from the battery communication circuit 5 into a current signal, which provides a control basis for the charge-discharge operation of the first charge-discharge circuit 3 and the second charge-discharge circuit 4.

[0048] In practical use, for example, when the current voltage of the battery connected to the first charging / discharging circuit 3 is low, the SC8813 chip, under the control of the microcontroller CH582M, prioritizes converting the input power into a voltage and current value suitable for charging the battery in the first charging / discharging circuit 3. Once the battery connected to the first charging / discharging circuit 3 is fully charged, the microcontroller CH582M allocates the remaining charging power to the corresponding battery in the second charging / discharging circuit 4. This ensures that when the user needs emergency charging, at least one battery can be fully charged first.

[0049] It should also be noted that the second charging and discharging circuit 4 is connected to multiple batteries. When multiple batteries are being charged, the microcontroller CH582M controls the second charging and discharging controller 41 corresponding to the second charging and discharging circuit 4 to charge the multiple batteries in order of voltage from low to high according to the preset charging logic. In this circuit, when a battery is fully charged, the microcontroller CH582M controls the fully charged battery of the second charging and discharging circuit 4 to disconnect it from its circuit to avoid continuing to charge the fully charged battery.

[0050] To better control the charging and discharging of each battery, a switching circuit is provided between each battery and the SC8813 chip. This switching circuit is a MOSFET and is used to turn on or off the charging and discharging loop in the charging and discharging circuit.

[0051] In a specific application scenario, the output terminal of the first charging / discharging circuit 3 is connected to the input terminal of the first switching circuit 32, and the output terminal of the first switching circuit 32 is electrically connected to the first battery compartment circuit 33; the signal terminal of the first battery compartment circuit 33 is electrically connected to the input terminal of the battery communication circuit 5. This connection method allows for precise control of the battery charging / discharging process in the first battery compartment circuit 33. The control circuit 2 can precisely command the first charging / discharging circuit 3 to perform charging / discharging operations based on the real-time battery status feedback from the battery communication circuit 5, ensuring that the battery is charged and discharged safely and efficiently. It should be noted that in this embodiment, the battery communication circuit 5 is an I2C integrated circuit bus used to transmit battery information connected to it to the controller CH582M.

[0052] Furthermore, the output terminal of the second charging and discharging circuit 4 is connected to the input terminal of the second switching circuit 42, and the output terminal of the second switching circuit 42 is electrically connected to the second battery compartment circuit 43; the signal terminal of the second battery compartment circuit 43 is electrically connected to the input terminal of the battery communication circuit 5.

[0053] When multiple second battery compartment circuits 43 are connected in parallel in the second charging and discharging circuit 4, each battery compartment circuit 43 is connected to a second switch circuit 42 between the second charging and discharging controller 41, so that when the battery in the circuit is fully charged, the microcontroller CH582M controls the second switch circuit 42 corresponding to the battery to turn off, so as to disconnect the fully charged battery from the current charging and discharging circuit and stop charging the battery.

[0054] It should also be noted that in this embodiment, the first charging / discharging circuit 3 and the second charging / discharging circuit 4 are connected in parallel with the microcontroller 21. It should be understood that the microcontroller 21 can control these two charging / discharging circuits simultaneously, thereby enabling simultaneous charging of batteries in different battery compartments, avoiding the time wasted by sequential charging and greatly improving charging efficiency.

[0055] In another application scenario, the connection between the control circuit 2 and the charging communication and control circuit 1, the first charging and discharging circuit 3, the second charging and discharging circuit 4, and the battery communication circuit 5 is bidirectional.

[0056] It should be understood that, in this design, when the charging device acts as the power recipient, the control circuit 2 obtains the status information of the battery and external power source from the battery communication circuit 5 and the charging communication and control circuit 1. Based on this information, it processes the data and transmits charging signals to the first charging / discharging circuit 3 and the second charging / discharging circuit 4. Alternatively, when the charging device acts as the power supplier, the control circuit 2 controls the first charging / discharging circuit 3 and the second charging / discharging circuit 4 to discharge. This bidirectional connection solves problems related to charging safety, efficiency, and device compatibility, resulting in precise charging control, an intelligent charging experience, and improved system stability and reliability. It effectively ensures battery safety, improves charging efficiency, and enhances adaptability to various batteries and power sources.

[0057] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A circuit for a charging manager used in drone batteries, characterized in that, include: Charging communication and control circuitry, used for exchanging information with an external power source; A control circuit, comprising a microcontroller, a first terminal, a second terminal, and an output terminal; The first terminal is electrically connected to the charging communication and control circuit and is used to receive a first voltage provided by an external power source; The second end is connected to a battery communication circuit for receiving battery signals provided by the battery communication circuit. A first charging and discharging circuit, the first charging and discharging circuit including a first charging and discharging controller; A second charging and discharging circuit, the second charging and discharging circuit including a second charging and discharging controller; The first charge / discharge controller and the second charge / discharge controller are both electrically connected to the output terminal of the control circuit, and the control circuit converts the battery signal received from the battery communication circuit into a current signal, which provides a control basis for the charge / discharge operation of the first charge / discharge circuit and the second charge / discharge circuit.

2. The circuit for a charging manager applied to a drone battery as described in claim 1, characterized in that: The output terminal of the first charging and discharging circuit is connected to the input terminal of the first switching circuit, and the output terminal of the first switching circuit is electrically connected to the first battery compartment circuit. The signal terminal of the first battery compartment circuit is electrically connected to the input terminal of the battery communication circuit.

3. The circuit for a charging manager applied to a drone battery as described in claim 1, characterized in that: The output terminal of the second charging and discharging circuit is connected to the input terminal of the second switching circuit, and the output terminal of the second switching circuit is electrically connected to the second battery compartment circuit. The signal terminal of the second battery compartment circuit is electrically connected to the input terminal of the battery communication circuit.

4. The circuit for a charging manager applied to a drone battery as described in claim 1, characterized in that: The first charging and discharging circuit and the second charging and discharging circuit are connected in parallel with the microcontroller.

5. The circuit for a charging manager applied to a drone battery as described in claim 3, characterized in that: The first charging and discharging circuit further includes a first switching circuit, the output terminal of the first switching circuit is electrically connected to the input terminal of the first battery compartment circuit, and the signal terminal of the first battery compartment circuit is electrically connected to the input terminal of the battery communication circuit. The second charging and discharging circuit also includes a second switching circuit, the output terminal of which is electrically connected to the input terminal of the second battery compartment circuit, and the signal terminal of the second battery compartment circuit is electrically connected to the input terminal of the battery communication circuit. The first charging and discharging circuit and the second charging and discharging circuit are connected in parallel with the microcontroller.

6. The circuit for a charging manager applied to a drone battery as described in claim 1, characterized in that: The charging communication and control circuit includes a charging interface and a PD power negotiation controller; The output terminal of the charging interface is electrically connected to the input terminal of the PD power negotiation controller, and the output terminal of the PD power negotiation controller is electrically connected to the first terminal.

7. The circuit for a charging manager applied to a drone battery as described in claim 1, characterized in that: The charging communication and control circuit includes an AC-DC conversion circuit. The input terminal of the AC-DC conversion circuit is electrically connected to an external power supply, and the output terminal of the AC-DC conversion circuit is electrically connected to the first terminal.

8. A circuit for a charging manager for a drone battery as described in any one of claims 1-7, characterized in that: The connection between the control circuit and the charging communication and control circuit, the first charging and discharging circuit, the second charging and discharging circuit, and the battery communication circuit is bidirectional.

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