Battery management circuit and battery management method for unmanned aerial vehicle

Abstract

The invention relates to the technical field of charging steward equipment, in particular to an unmanned aerial vehicle battery management circuit and a battery management method, and the battery management circuit comprises an instruction receiving circuit, a coordination control circuit and an equalization circuit. A signal receiving end of the coordination control circuit is electrically connected with the instruction receiving circuit, and a signal acquisition end of the coordination control circuit is electrically connected with a plurality of battery units for acquiring electric quantity parameters of each battery unit; the coordination control circuit compares the received electric quantity management mode signal transmitted by the instruction receiving circuit to determine a corresponding charging management mode signal and outputs a control signal to the equalization circuit according to the charging management mode signal and the electric quantity parameter; and the equalization circuit manages the electric quantity of the battery unit according to the control signal, so that the electric quantity transfer of the battery unit meets the requirement of a user at the instruction receiving circuit end, and the requirement that the user needs to supplement electricity or store electricity can be effectively met.

Description

Technical Field

[0001] The present invention relates to the technical field of charging butler equipment, and in particular to a battery management circuit and a battery management method for an unmanned aerial vehicle (UAV). Background Art

[0002] Today's drones / sports cameras / portable imaging cameras generally use replaceable battery designs. Users can buy multiple batteries to relay the battery life of digital devices. The following problems are commonly encountered when using multiple batteries:

[0003] For example, during use, the current device has some battery remaining, but the remaining power is not enough to complete the next use cycle. At this time, the next battery needs to be replaced. The replaced battery often has 20-30% or even more remaining. If the battery is not recharged in time outdoors, there may be many batteries with small amounts of power left, which makes these batteries not fully utilized.

[0004] For another example, the best storage capacity of a battery is 60%. When the battery is not to be used for a long time, the excess power of the battery needs to be discharged or the battery with too little power needs to be replenished to 60% for longer storage.

[0005] If the battery to be stored has a high power level, a common method is to install the battery into the corresponding digital device and turn it on to consume power. This operation method is not only cumbersome but also consumes the service life of the device.

[0006] Therefore, the above technical problems need to be solved. Summary of the invention

[0007] In order to overcome the shortcomings of the prior art, the present invention proposes a drone battery management circuit, the purpose of which is to enable the power between different batteries to be transferred according to actual usage needs, so as to solve the problem that when timely centralized power replenishment and power storage are required, it is cumbersome and damaging to the digital devices to rely on external digital devices to consume excess power.

[0008] In order to solve the above technical problems, the basic technical solution proposed by the present invention is:

[0009] A battery management circuit for an unmanned aerial vehicle, used for managing the power of a plurality of battery cells, characterized in that the battery management circuit comprises:

[0010] An instruction receiving circuit, used for generating a power management mode signal according to a user operation;

[0011] A coordination control circuit, wherein a signal receiving end of the coordination control circuit is electrically connected to the command receiving circuit, and a signal collecting end is electrically connected to a plurality of battery cells for collecting power parameters of each battery cell; the coordination control circuit compares the power management mode signal received from the command receiving circuit to determine the corresponding charging management mode signal and outputs a control signal according to the charging management mode signal and the power parameter;

[0012] The balancing circuit has a signal end connected to the coordination control circuit and a charge and discharge end connected to the plurality of battery cells, and is used to select at least one of the plurality of battery cells according to the control signal to perform power management on the battery cells.

[0013] Furthermore, the instruction receiving circuit includes a key receiving circuit or a touch receiving circuit.

[0014] Furthermore, it also includes an external power input circuit, and the output end of the external power input circuit is connected to the coordination control circuit.

[0015] Furthermore, the power management mode signal includes a power collection signal and a power storage signal.

[0016] Further, the coordination control circuit includes a first control circuit and a second auxiliary control circuit;

[0017] The output end of the instruction receiving circuit is connected to the first control circuit;

[0018] The output end of the first control circuit is connected to the second auxiliary control circuit;

[0019] The input end of the first control circuit is connected to a battery communication path;

[0020] The input end of the battery communication circuit is connected to the battery unit;

[0021] The input / output terminal of the second auxiliary control circuit is connected to the equalizing circuit.

[0022] In addition, a battery management method is proposed, which is applicable to the above-mentioned drone battery management circuit and is used to manage the power of multiple battery cells, and is characterized by:

[0023] Receive user operation to generate power management mode signal;

[0024] Collecting the power parameters of each battery cell and comparing the received power management mode signal to determine the corresponding charging management mode signal, and outputting a control signal to the balancing circuit according to the charging management mode signal and the power parameters;

[0025] The balancing circuit selects at least one of the plurality of battery cells according to the control signal to perform power management on the battery cell.

[0026] Furthermore, after collecting the power parameters of each battery cell, the following analysis and processing steps are included:

[0027] Obtaining the current real-time power value of each of the battery cells;

[0028] And each of the battery cells is arranged according to a preset arrangement order value.

[0029] Furthermore, after the power management mode signal is generated by accepting the user operation, the power management mode determination step is also included. The power management mode determination step is specifically as follows:

[0030] If the result of the power management mode determination step is the power collection mode, the control signal is output to the balancing circuit, so that the balancing circuit selects at least one battery with low power from the plurality of battery cells and transfers the power to the battery with high power;

[0031] Further, if the result of the power management mode determination step is the storage mode, a second determination step is output;

[0032] The second judgment step specifically includes obtaining a first difference value belonging to each battery cell based on a comparison analysis between the real-time power value and the preset power value;

[0033] If the first difference value of at least one of the battery cells is zero, the corresponding battery cell is removed from the balancing circuit;

[0034] If the first difference values ​​of all the battery cells are less than zero, a second control signal is output to prompt that an external charging power source is required;

[0035] If the first difference of at least one of the battery cells is greater than zero, a discharge signal is output to a battery discharge circuit connected to the coordination control circuit, so that the battery discharge circuit consumes the remaining power.

[0036] A charging butler is also proposed for charging a drone battery. The charging butler uses the drone battery management circuit described above when charging the drone battery.

[0037] The beneficial effects of the present invention are:

[0038] A drone battery management circuit of the technical solution of the present invention aims to use the drone battery management circuit inside a charging butler to achieve the ability to transfer power between different batteries according to actual use needs, so as to solve the problem that it is cumbersome and damaging to digital devices to consume excess power by external digital devices when timely power replenishment and power storage are needed; specifically, the battery management circuit includes: an instruction receiving circuit, a coordination control circuit and an equalization circuit; the signal receiving end of the coordination control circuit is electrically connected to the instruction receiving circuit, and the signal acquisition end is electrically connected to a plurality of battery cells for collecting power parameters of each battery cell; the coordination control circuit compares the power management mode signal received from the instruction receiving circuit to determine the corresponding charging management mode signal and outputs a control signal to the equalization circuit according to the charging management mode signal and the power parameter, so that the equalization circuit manages the power of the battery cell according to the control signal, so that the power transfer of the battery cell meets the needs of the user at the instruction receiving circuit end, thereby effectively solving the user's need for power replenishment or power storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a schematic diagram of a battery management circuit for a drone according to Embodiment 1 of the present invention;

[0040] Figure 2 This is a schematic diagram of a battery management circuit for a drone according to Embodiment 2 of the present invention;

[0041] Figure 3 It is a schematic diagram of steps 101, 102, and 103 of the battery management method of the present invention;

[0042] Figure 4 It is a schematic diagram of step 1021 of the battery management method of the present invention;

[0043] Figure 5 Schematic diagram of step 1022 of the battery management method of the present invention;

[0044] Description of reference numerals:

[0045] 1-instruction receiving circuit, 2-coordination control circuit, 21-first control circuit, 22-second auxiliary control circuit, 3-balancing circuit, 31, 32, 33-balancing sub-circuit, 311, 321, 331-charging and discharging circuit, 312, 322, 332-switching circuit, 4-battery unit, 5-battery communication circuit, 6-external power input circuit, 61-normal input circuit, 62-PD fast charging protocol circuit, 7-battery discharge circuit. DETAILED DESCRIPTION

[0046] The following will be combined with the attached Figure 1 To Attachment Figure 5The technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] Today's drones / sports cameras / portable imaging cameras generally use replaceable battery designs. Users can buy multiple batteries to relay the battery life of digital devices. The following problems are commonly encountered during the use of multiple batteries: During use, the current device has remaining battery, but the remaining power is not enough to complete the next use cycle. At this time, the next battery needs to be replaced. The replaced battery often has 20-30% or even more remaining. If the power is not replenished in time outdoors, there may be many batteries with small amounts of power left, which makes it impossible to fully utilize the low-power batteries.

[0048] In another case, the best storage capacity of the battery is 60%. When the battery is not used for a long time, it is necessary to discharge the excess power of the battery or replenish the battery with too little power to 60% for longer storage. If the battery to be stored has a higher power, the common method is to install the battery in the corresponding digital device and turn it on to consume power. This method is not only cumbersome but also shortens the service life of the digital device.

[0049] Therefore, the inventor of the present technical solution proposes a charging butler for charging a drone battery. The charging butler uses the drone battery management circuit described below when charging the drone battery.

[0050] The purpose of this technical solution is to solve the problem of how to "concentrate" or "spread out" the power of several low-power batteries and some fully-charged batteries when there is no external power supply. This is of great significance to the device user. If there is a charging butler that can transfer the power of two 30% batteries to another 40% battery, the user can have an extra battery available without external power supply. When storage is needed, the "charging butler" can transfer the power of batteries with a power level above 60% to batteries with a power level below 60%. If there is still excess power after the power is spread out, the excess power can be consumed through the discharge circuit inside the charging butler. If the power does not reach the storage state after the power is spread out, the charging butler can also recharge the battery through an external power supply. This process is completed automatically, which can save the user a lot of operations and time.

[0051] In detail, a charging butler of the present technical solution includes a shell, and a fleshy battery assembly cavity is recessed inward on the surface of the shell. The battery assembly cavity is used to assemble the drone battery so that the charging butler can charge the drone battery. One side of the surface of the shell is also provided with a plurality of charging interfaces, such as a TYPE-C interface, which is used to connect to an external power supply so that the charging butler can obtain power from the external power supply. A display screen is also provided on the surface of the charging butler to display the charging status of the charging butler.

[0052] The charging butler has a control circuit board inside, on which are arranged several circuits and electronic components (such as control ICs or switch MOS tubes, etc.) to form a drone battery management circuit so that the charging butler can manage the power of the drone battery while charging the drone battery.

[0053] Specifically, Figure 1 As shown, a battery management circuit for an unmanned aerial vehicle of the present technical solution is used to manage power of multiple battery cells, and is characterized in that the battery management circuit includes a command receiving circuit 1, a coordination control circuit 2, a balancing circuit 3, a plurality of battery cells 4 and an external power input circuit 6.

[0054] The instruction receiving circuit 1 is used to generate a power management mode signal according to user operation; the power management mode signal includes a power collection signal and a power storage signal.

[0055] It should be noted that the instruction receiving circuit 1 includes a key receiving circuit 11 or a touch receiving circuit 12. It should be understood that when the charging butler is provided with a key receiving circuit 11, there are some keys on the surface of the shell of the charging butler for the user to press and operate. When the charging butler is provided with a touch receiving circuit 12, there are some touch modules on the surface of the shell of the charging butler for the user to touch and operate. Whether it is a pressing operation or a touch operation, the user wants the charging butler to manage the collection or storage of electricity for the drone battery. Of course, it is not limited to the two modes of pressing operation and touch operation. For other operations such as voice control, it can also be set according to actual needs to enable the charging butler to manage the collection or storage of electricity for the drone battery.

[0056] It should also be noted that, no matter it is a pressing operation or a touching operation, each operation has at least two different power management modes. In the present embodiment, the power management mode includes a power collection mode and a power storage mode.

[0057] When in use, the user sends a power collection signal or a power storage signal through a pressing operation or a touching operation.

[0058] The coordination control circuit 2 includes a control IC as the center and a plurality of circuits extending from the control IC. The coordination control circuit 2 is used to collect the power information of the battery cell 4, and can also sort the power of each battery cell 4 according to the acquired power information. The power sorting can be sorted from high to low or from low to high. In addition, the coordination control circuit 2 can regulate the normal operation of each circuit.

[0059] Specifically, the coordination control circuit 2 includes a signal receiving end and a signal acquisition end. The signal receiving end is used to electrically connect to the instruction receiving circuit 1, and the signal acquisition end is electrically connected to a plurality of battery cells 4 to collect the power parameters of each battery cell 4. It should be noted that the coordination control circuit 2 can be directly electrically connected to each of the battery cells 4 through its signal acquisition end to collect the power information of each of the battery cells 4, but is not limited to this.

[0060] In some other embodiments, a battery communication circuit 5 is included, wherein the input end of the battery communication circuit 5 is connected to each of the battery cells 4, and the output end of the battery communication circuit 5 is connected to the coordination control circuit 2, so as to transmit the power information of each of the battery cells 4 to the coordination control circuit 2.

[0061] The coordination control circuit 2 compares the received power management mode signal transmitted by the instruction receiving circuit 1 to determine the corresponding charging management mode signal and outputs a control signal according to the charging management mode signal and the power parameter.

[0062] The coordination control circuit 2 is also electrically connected to a balancing circuit 3, the signal end of the balancing circuit 3 is connected to the coordination control circuit 2, and the charging and discharging end is connected to the plurality of battery cells 4, for selecting at least one of the plurality of battery cells 4 according to the control signal to perform power management on the battery cells 4.

[0063] In detail, the balancing circuit 3 has a balancing subcircuit, such as a balancing subcircuit 31, a balancing subcircuit 32, a balancing subcircuit 33, and a balancing subcircuit 34. In actual use, there may be multiple balancing subcircuits, which are not listed one by one here. Each balancing subcircuit includes a charge and discharge circuit and a switch circuit. For example, the balancing subcircuit 31 includes a charge and discharge circuit 311 and a switch circuit 312, and the balancing subcircuit 32 includes a charge and discharge circuit 321 and a switch circuit 322, and so on. The switch circuit is composed of some MOS tube switches. Each balancing subcircuit is connected in parallel to the coordination control circuit 2 and is controlled by the coordination control circuit 2.

[0064] When in use, the signal receiving end of the coordination control circuit 2 receives the power management mode signal from the instruction receiving circuit 1, such as the power collection mode. At the same time, the signal acquisition end of the coordination control circuit 2 collects the power information at the battery cell 4, and arranges the power of the multiple battery cells 4 in a preset order, such as arranging from high to low according to the power, such as 4A>4B>4C, etc. The battery cell 4A is connected to the balancing sub-circuit 31, the battery cell 4B is connected to the balancing sub-circuit 32, and the battery cell 4C is connected to the balancing sub-circuit 33.

[0065] At this time, the coordination control circuit 2 outputs a control signal to the balancing circuit 3 according to the power collection mode instruction received by its signal receiving end and the power sorting signal of the battery cell 4 collected by the signal collection end, so that the balancing circuit 3 transfers the battery with low power in the battery cell 4 to the battery with high power. In detail, for example, when the balancing circuit 3 is working, the balancing circuit 3 controls the opening of the switch circuit 322 in the balancing subcircuit 32 according to the control signal including the power collection mode and power information received by it, and makes the charge and discharge circuit 321 become a discharge circuit, the charge and discharge circuit 311 become a charging circuit, and opens the switch circuit 312, thereby realizing the transfer of power in the battery cell 4B to the battery cell 4A. After the power in the battery cell 4B is transferred to the battery cell 4A, the balancing subcircuit 32 turns off the switch circuit 321, so that the battery cell 4B is stripped from the balancing circuit 3 and disconnected. Then the balancing circuit 3 opens the switch circuit 332 corresponding to the battery cell 4C and changes the charge-discharge circuit 331 into a discharge circuit, thereby transferring the power in the battery cell 4C to the battery cell 4A. The entire process of transferring the remaining power in the battery cell 4 with low power to the battery cell 4 with high power is the power collection mode.

[0066] It should be noted that in order to ensure the service life of the drone battery, the drone battery needs to maintain a safe power level of 5% to 7%. Therefore, when the coordination control circuit 2 collects that the power in the current drone battery is within the safe power range, the coordination control circuit 2 controls the balancing circuit 3 so that the balancing circuit 3 turns off the switch circuit of the drone battery that is not within the safe power range to avoid the power in the drone battery being completely transferred.

[0067] In another usage scenario, the charging butler can also perform a power-sharing mode, in which the power of a drone battery with high power is transferred to a drone battery with low power.

[0068] In the power balancing mode, there is a working scenario which is the power storage mode. Specifically, for example, the power management mode sent by the instruction receiving circuit 1 is the power storage mode. The power storage mode transfers the power in the battery cell 4 with high power to the battery cell 4 with low power.

[0069] For example, in this usage scenario, the power in the battery cell 4 is arranged from high to low, such as 4A>4B>4C, then the power storage mode is to first transfer the power in the battery cell 4A with the highest power to the battery cell 4B with the second lowest power, and the coordination control circuit 2 controls the balancing circuit 3 to open the corresponding switch circuit 312 in the battery cell 4A, and change its corresponding charge and discharge circuit into a discharge circuit, so that the power in the battery cell 4A can move to the battery cell 4B. When the power in the battery cell 4B is filled to 60%, the balancing circuit 3 closes the corresponding switch circuit 322 in the battery cell 4B under the control of the control signal, and at the same time opens the switch circuit 332 in the balancing subcircuit 33 and changes the charge and discharge circuit 331 into a charging circuit, so that the power in the battery cell 4A is transferred to the battery cell 4C. In this way, the whole process realizes the power storage mode.

[0070] In another usage scenario, when the battery with the highest charge in the battery cells 4 transfers power to other battery cells 4, the battery cell 4 with the highest charge still has more than 60% of the remaining charge, and this remaining charge can be released through the battery discharge circuit 7.

[0071] In another usage scenario, when the battery with the highest power in the battery unit 4 transfers power to other battery units 4, the power in each battery unit 4 does not reach 60% of the power, or when the power of the last remaining individual battery unit 4 does not reach 60% of the power, the coordination control circuit 2 outputs a prompt signal to the display screen of the charging hub to prompt the user to use an external power supply to connect the charging hub to provide power for the charging hub.

[0072] To this end, the charging butler also has an external power input circuit 6, and the output end of the external power input circuit 6 is connected to the coordination control circuit 2. The external power output circuit 6 is used to connect an external power source (such as a mobile power source, etc.) so that the external power source can provide power to the charging butler.

[0073] In one embodiment of the present invention, the external power input circuit 6 is a common input circuit 61, which is embodied as a TYPE-C interface on the surface of the charging hub. The TYPE-C interface is electrically connected to the coordination control circuit 2. When the plug of the external power source is inserted into the TYPE-C interface, power can be transmitted to the charging hub.

[0074] In one embodiment of the present invention, the external power input circuit 6 is a PD fast charging protocol circuit 62, which is reflected on the surface of the charging hub as another TYPE-C interface. The TYPE-C interface is electrically connected to the coordination control circuit 2. When the external power plug is inserted into the TYPE-C interface, power can be transmitted to the charging hub at the speed of PD fast charging.

[0075] In one embodiment of the present invention, Figure 2 As shown, the coordination control circuit 2 includes a first control circuit 21 and a second auxiliary control circuit 22; the output end of the instruction receiving circuit 1 is connected to the first control circuit 21; the output end of the first control circuit 21 is connected to the second auxiliary control circuit 22; the input end of the first control circuit 21 is connected to the battery communication path 5; the input end of the battery communication circuit 5 is connected to the battery unit 4; the input / output end of the second auxiliary control circuit 22 is connected to the balancing circuit 3.

[0076] In this embodiment, the second auxiliary control circuit 22 is used to control the normal operation of the balancing circuit 3 and the external power supply access circuit 6. Dividing the original coordination control circuit 2 into the first control circuit 21 and the second auxiliary control circuit 22 can effectively prevent the original coordination control circuit 2 from having a single point failure that affects the normal use of the entire charging hub, and can also facilitate fault troubleshooting and repair. More importantly, it can prevent the original coordination control circuit 2 from being overloaded, thereby avoiding charging failures in the charging hub.

[0077] In the actual use of this embodiment, the first control circuit 21 is composed of a microcontroller, and the signal receiving end of the microcontroller can receive the power management mode signal transmitted by the instruction receiving circuit 1 about the power collection signal or the power storage signal, and then the signal acquisition end of the microcontroller is connected to the battery communication circuit 5 to collect the power information about the battery cell 4 transmitted by the battery communication circuit 5. The microcontroller integrates the power information to sort the power and outputs a control signal from the power management mode signal to the second auxiliary control circuit 22. The second auxiliary control circuit 22 controls the balancing circuit 3 to perform adaptive power management.

[0078] In addition, a battery management method is proposed, such as Figures 3 to 5As shown, the above-mentioned drone battery management circuit adopts this battery management method in actual operation. This battery management method is used to manage the power of multiple battery cells, and specifically includes the following steps S101: receiving user operation to generate a power management mode signal;

[0079] In this step, the user generates a power management mode signal by operating a button or a pressing module provided on the charging hub. The button or pressing module has several buttons, which may respectively have buttons representing the power collection mode or the power storage mode. It should be understood that the user can send a power management mode signal to the charging hub by operating the button representing the power collection mode or the power storage mode.

[0080] After step 101, step 102 is executed: the power parameters of each battery cell 4 are collected and the received power management mode signal is compared to determine the corresponding charging management mode signal and a control signal is output to the balancing circuit 3 according to the charging management mode signal and the power parameters; in this step, after collecting the power parameters of each battery cell 4, an analysis and processing step 1021 and a power management mode judgment step 1022 are also included.

[0081] The analysis and processing step 1021 is specifically as follows: obtaining the current real-time power value of each of the battery cells 4; and arranging each of the battery cells 4 according to a preset arrangement order value.

[0082] In the analysis and processing step 1021, the coordination control circuit 2 collects the power parameters of each of the battery cells 4 through the battery communication circuit 5, and then sorts each of the battery cells 4 from high to low according to a preset power sorting order, such as arranging from high to low power.

[0083] The power management mode judgment step 1022 specifically includes the judgment of the power collection mode and the storage mode; it should be noted that the method of defining the transfer of power from a battery with low power to a battery with high power is the power collection mode; the method of defining the transfer of power from a battery with high power to a battery with low power is the storage mode.

[0084] If the result of the power management mode determination step is the power collection mode, the control signal is output to the balancing circuit and then step 103 is executed: the balancing circuit selects at least one of the multiple battery cells 4 according to the control signal to perform power management on the battery cells.

[0085] Thus, the balancing circuit 3 selects at least one battery with low power from the multiple battery cells 4 and transfers the power to the battery with high power.

[0086] Such a design makes it possible to concentrate the remaining power of multiple drone batteries into the same one in an emergency situation when the remaining power of multiple drone batteries is not enough to support the flight of the equipment, so that the collected drone batteries can support the flight of the drone equipment.

[0087] In another usage scenario, for example, if the user selects the power storage mode, then after the coordinated control circuit 2 determines that it is the power storage mode according to the power management mode judgment step 1022, it outputs the second judgment step 104: specifically including obtaining the first difference value belonging to each battery cell based on the comparison and analysis of the real-time power value and the preset power value; if the first difference value of at least one of the battery cells is zero, the current corresponding battery cell is removed from the balancing circuit; if the first difference values ​​of all the battery cells 4 are less than zero, a second control signal is output to prompt that an external charging power source is required.

[0088] It should be noted that the preset power value is that each battery cell 4 has a power storage capacity of 60% when it reaches the power storage standard, that is, the preset power value is 60%. The real-time power collected from each battery cell 4 is compared with the preset current value of 60% to obtain the first difference value of each battery cell 4. For example, in this embodiment, the power of the battery cell 4A is 80%, and the first difference value is 20%; the power of the battery cell 4B is 50%, and the first difference value is negative 10%; the power of the battery cell 4C is 40%, and the first difference value is negative 20%.

[0089] Then the coordination control circuit 2 controls the switch circuit 312 in the equalization circuit 2 to open and turns the charge-discharge circuit 311 into a discharge circuit, and at the same time turns the charge-discharge circuit 321 into a charge circuit and turns on the switch circuit 322, so that the power in the battery cell 4A is transferred from the battery cell 4B. When the power in the battery cell 4B is charged from the original 50% to 60%, the coordination control circuit 2 collects the power of each battery cell 4 in real time. Therefore, when the battery cell 4B reaches 60%, the first difference is zero, which means that the battery cell 4B meets the requirements of being separated from the equalization circuit 3. The detailed operation is that the coordination control circuit 2 controls the equalization circuit 3 to close the switch circuit 321, so that the battery cell 4B can no longer obtain power, thereby completing the power storage work of the battery cell 4B.

[0090] Next, the battery cell 4B is operated to store electricity. The above method is used to transfer the electricity in the battery cell 4A to the battery cell 4C, which will not be described in detail here.

[0091] It should be noted that, since the battery cell 4A has transferred 10% of the power to the battery cell 4B, the remaining power in the battery cell 4A is 70% at this time. Then the battery cell 4C needs to reach the power storage standard of 60%, and it needs another 20% of the power. However, at this time, the battery cell 4A can only distribute 10% to the battery cell 4C, otherwise the battery cell 4A itself cannot reach the power storage standard of 60%. When its own power remains at 60%, the switch circuit 312 in the battery cell 4A will be closed, and the balancing circuit 3 will separate the battery cell 4A from the current circuit to prevent the power in the battery cell 4A from continuing to be transferred.

[0092] Therefore, in this embodiment, the battery cell 4C finally transfers only 50% of the power, which is far from meeting the power storage standard. At this time, the coordination control circuit 2 outputs a second control signal to the display screen of the charging hub to remind the user that an external power supply is needed to replenish the power of the charging hub.

[0093] In another usage scenario, if the first difference of at least one of the battery cells 4 is greater than zero, a discharge signal is output to the battery discharge circuit 7 connected to the coordination control circuit 2, so that the battery discharge circuit 7 consumes the remaining power. It should be understood that in this part, it is applicable to the case where the drone battery with the highest power transfers power to other drone batteries, and its own remaining power is still more than 60%. In order to realize the power storage mode, the remaining power can be released through the battery discharge circuit 7 to increase the power storage stability of the drone battery.

[0094] In summary, the drone battery management circuit of the technical solution enables the charging butler to automatically switch between the power collection mode and the power storage mode according to the user's usage requirements. The purpose is to enable the power between different batteries to be transferred according to actual usage needs, so as to solve the problem that when timely centralized power replenishment and power storage are needed, it is cumbersome and damaging to digital devices to consume excess power by external digital devices.

[0095] According to the disclosure and teaching of the above description, those skilled in the art to which the present invention belongs may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the present invention.

Claims

1. A drone battery management circuit, used for power management of multiple battery cells, characterized in that: The battery management circuit comprises: An instruction receiving circuit, used for generating a power management mode signal according to a user operation; A coordination control circuit, wherein a signal receiving end of the coordination control circuit is electrically connected to the command receiving circuit, and a signal collecting end is electrically connected to a plurality of battery cells for collecting power parameters of each battery cell; the coordination control circuit compares the power management mode signal received from the command receiving circuit to determine the corresponding charging management mode signal and outputs a control signal according to the charging management mode signal and the power parameter; The equalization circuit has a signal end connected to the coordination control circuit and a charge and discharge end connected to the plurality of battery cells, and is used to select at least one of the plurality of battery cells according to the control signal to perform power management on the battery cells.

2. The unmanned aerial vehicle battery management circuit according to claim 1, characterized in that: The instruction receiving circuit includes a key receiving circuit or a touch receiving circuit.

3. The drone battery management circuit as claimed in claim 1, characterized in that: It also includes an external power input circuit, and the output end of the external power input circuit is connected to the coordination control circuit.

4. The unmanned aerial vehicle battery management circuit according to claim 1, characterized in that: The power management mode signal includes a power collection signal and a power storage signal.

5. The unmanned aerial vehicle battery management circuit according to claim 1, characterized in that: The coordinated control circuit includes a first control circuit and a second auxiliary control circuit; The output end of the instruction receiving circuit is connected to the first control circuit; The output end of the first control circuit is connected to the second auxiliary control circuit; The input end of the first control circuit is connected to a battery communication path; The input end of the battery communication circuit is connected to the battery unit; The input / output terminal of the second auxiliary control circuit is connected to the equalizing circuit.

6. A battery management method, applicable to a drone battery management circuit as claimed in any one of claims 1 to 5, for managing the power of multiple battery cells, characterized in that: The method comprises the following steps: Receive user operation to generate power management mode signal; Collecting the power parameters of each battery cell and comparing the received power management mode signal to determine the corresponding charging management mode signal, and outputting a control signal to the balancing circuit according to the charging management mode signal and the power parameters; The balancing circuit is controlled to select at least one of the plurality of battery cells according to the control signal to perform power management on the battery cell.

7. A battery management method as claimed in claim 6, comprising the following analysis and processing steps after collecting the power parameters of each battery cell: Obtaining the current real-time power value of each of the battery cells; And each of the battery cells is arranged according to a preset arrangement order value.

8. A battery management method according to claim 6, further comprising a step of determining a power management mode after receiving a user operation to generate a power management mode signal, wherein the step of determining a power management mode is specifically as follows: If the result of the power management mode determination step is the power collection mode, the control signal is output to the balancing circuit, so that the balancing circuit selects at least one battery with low power from a plurality of battery cells and transfers the power to a battery with high power.

9. A battery management method according to claim 6, further comprising a step of determining a power management mode after receiving a user operation to generate a power management mode signal, wherein the step of determining a power management mode is specifically as follows: If the result of the power management mode determination step is storage mode, a second determination step is output; The second judgment step specifically includes obtaining a first difference value belonging to each battery cell based on a comparison analysis between the real-time power value and the preset power value; If the first difference value of at least one of the battery cells is zero, the corresponding battery cell is removed from the balancing circuit; If the first difference values ​​of all the battery cells are less than zero, a second control signal is output to prompt that an external charging power source is required; If the first difference of at least one of the battery cells is greater than zero, a discharge signal is output to a battery discharge circuit connected to the coordination control circuit, so that the battery discharge circuit consumes the remaining power.

10. A charging butler for charging drone batteries, characterized by: The charging butler uses the drone battery management circuit described in any one of claims 1 to 5 when charging the drone battery.

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