A double upgrade control circuit of a high-power plant protection unmanned aerial vehicle charging system

Abstract

The application discloses a double-upgrade control circuit of a high-power plant protection unmanned aerial vehicle charging system, which is used for realizing separate upgrade of a charging management controller and a charging power controller through an external TYPE-C interface, and comprises a first switch switching circuit, a second switch switching circuit, a first communication chip and a second communication chip, wherein the first communication chip is connected to the charging management controller, and the second communication chip is connected to the charging power controller. The first switch switching circuit and the second switch switching circuit have a circuit switching function, and by controlling the switching circuit, upgrade data of the charging management controller and the charging power controller transmitted through the input TYPE-C interface can be sent to corresponding devices through corresponding data links, so that separate upgrade of the charging management controller and the charging power controller is realized. The application has the advantages of simple structure, small number of used components and elements, few interfaces and convenient operation.

Description

Technical Field

[0001] This invention relates to the field of drone charging system technology, specifically to a dual-upgrade control circuit for a high-power agricultural drone charging system. Background Technology

[0002] Agricultural drones, also known as unmanned aerial vehicles for agricultural and forestry plant protection, are intelligent agricultural equipment consisting of a flight platform (multi-rotor, fixed-wing, or helicopter), a navigation and flight control system, and a spraying mechanism. They achieve precise operations such as pesticide spraying, seed sowing, and fertilizer application through ground remote control or autonomous navigation. This equipment utilizes BeiDou / GPS dual-mode positioning and RTK centimeter-level accuracy technology, and is equipped with a centrifugal nozzle atomization device. The rotor airflow enhances pesticide penetration, saving 50% on pesticides and 90% on water consumption.

[0003] High-powered agricultural drones have a payload capacity of ≥15 kg (pesticide or sprayed material), with mainstream models reaching 60–100 kg. They also have a spray width of ≥9 meters, a spray flow rate of ≥8 L / min, and some high-end models reaching 40 L / min. Their endurance allows for a single operation time of ≥20 minutes, and with a quick-change battery system, they can operate continuously. As a result, high-powered agricultural drones are being used in increasingly diverse ways, with a wider range of applications. New products are placing greater demands on new applications and industries, requiring more frequent updates and iterations.

[0004] In existing high-power agricultural drones, upgrading the product requires multiple interfaces corresponding to different control modules, or it requires disassembling the shell to upgrade to different control modules. The equipment structure is complex, the failure rate is high, and it is inconvenient to maintain. Summary of the Invention

[0005] In view of this, it is necessary to provide a dual-upgrade control circuit for a high-power agricultural drone charging system that can independently upgrade the charging power controller and the charging management controller through an external TYPE-C interface.

[0006] A dual-upgrade control circuit for a high-power agricultural drone charging system is disclosed. This circuit allows for separate upgrades of the charging management controller and the charging power controller via an external Type-C interface. The circuit includes an input Type-C interface, a first switching circuit, a second switching circuit, a first communication chip, and a second communication chip.

[0007] The data input terminals of the first switch switching circuit and the second switch switching circuit are respectively connected to the two data input pins of the input TYPE-C interface. The two data output terminals of the first switch switching circuit and the second switch switching circuit are respectively cross-connected to the data input terminals of the first communication chip and the second communication chip. The data output terminal of the first communication chip is connected to the charging management controller, and the data output terminal of the second communication chip is connected to the charging power controller.

[0008] The first switch switching circuit and the second switch switching circuit are used to switch the transmission path of the upgrade data signal, so that the upgrade data of the charging management controller and the charging power controller transmitted through the same input TYPE-C interface are respectively transmitted to the charging management controller and the charging power controller, thereby realizing the software upgrade of the charging management controller and the charging power controller.

[0009] Preferably, the data input terminal PC-485A of the first switch circuit is connected to the DP pin of the input TYPE-C interface, and the data input terminal PC-485B of the second switch circuit is connected to the DN pin of the input TYPE-C interface; the switching terminals of the first and second switch circuits are connected to the power supply terminal of the input TYPE-C interface; and the power input terminals of the first and second switch circuits are connected to the power module.

[0010] The first switching circuit includes a first data transmission branch, a second data transmission branch, and a first switching branch. The first data transmission branch has a first data output terminal TC-485A, and the second data transmission branch has a second data output terminal DC-485A. The first switching branch is used to switch input data between the first data transmission branch and the second data transmission branch.

[0011] The second switching circuit includes a third data transmission branch, a fourth data transmission branch, and a second switching branch. The third data transmission branch has a third data output terminal TC-485B, and the fourth data transmission branch has a fourth data output terminal DC-485B. The second switching branch is used to switch input data between the third data transmission branch and the fourth data transmission branch.

[0012] The first data output terminal TC-485A is connected to the first data input terminal TC-485A' of the first communication chip, and the third data output terminal TC-485B is connected to the second data input terminal TC-485B' of the first communication chip; the data output terminal of the first communication chip is connected to the charging management controller.

[0013] The second data output terminal DC-485A is connected to the first data input terminal DC-485A' of the second communication chip, and the fourth data output terminal DC-485B is connected to the second data input terminal DC-485B' of the second communication chip; the data output terminal of the second communication chip is connected to the charging power controller.

[0014] Preferably, the first data transmission branch includes a forty-third transistor Q43 and a first transistor Q1, the second data transmission branch includes a forty-second transistor Q42 and a second transistor Q2, and the first switching branch includes a forty-fourth transistor Q44 and a forty-eighth transistor Q48; wherein, the forty-third transistor Q43 and the first transistor Q1 are N-type transistors, the forty-second transistor Q42 and the second transistor Q2 are P-type transistors, the forty-fourth transistor Q44 is an N-type transistor, and the forty-eighth transistor Q48 is a P-type transistor.

[0015] Preferably, the emitter of the forty-third transistor Q43 and the emitter of the first transistor Q1 are connected to each other, the collector of the forty-third transistor Q43 is connected to the data input terminal PC-485A of the first switching circuit, the collector of the first transistor Q1 is connected to the first data output terminal TC-485A of the first switching circuit, and the base of the forty-third transistor Q43 and the base of the first transistor Q1 are connected to the power input terminal of the first switching circuit through the first 116 resistor R116 and the first 17 resistor R117.

[0016] The collector of the forty-second transistor Q42 and the collector of the second transistor Q2 are connected to each other. The emitter of the forty-second transistor Q42 is connected to the data input terminal PC-485A of the first switching circuit. The emitter of the second transistor Q2 is connected to the second data output terminal DC-485A of the first switching circuit. The base of the forty-second transistor Q42 and the base of the second transistor Q2 are connected to the midpoint between the first one-six resistor R116 and the first one-seven resistor R117 through the first two-four resistor R124.

[0017] The base of the forty-fourth transistor Q44 is connected to the switching terminal of the first switching circuit through a first two-zero resistor R120. The collector of the forty-fourth transistor Q44 is connected to the base of the forty-second transistor Q42 and the base of the second transistor Q2. The emitter of the forty-fourth transistor Q44 is grounded. A second Zener diode Z2 and a first two-two resistor R122 are connected in parallel between the base and emitter of the forty-fourth transistor Q44. The emitter of the forty-eighth transistor Q48 is connected to the base of the forty-third transistor Q43 and the base of the first transistor Q1. The base of the forty-eighth transistor Q48 is connected to the base of the forty-second transistor Q42 and the base of the second transistor Q2 through a first zero-five resistor R105. The collector of the forty-eighth transistor Q48 is grounded. A first two-three resistor R123 is connected between the base and collector of the forty-eighth transistor Q48.

[0018] Preferably, the third data transmission branch includes a forty-third transistor Q40 and a third transistor Q3, the fourth data transmission branch includes a thirty-second transistor Q32 and a fourth transistor Q4, and the second switching branch includes a forty-first transistor Q41 and a forty-sixth transistor Q46; wherein, the forty-third transistor Q40 and the third transistor Q3 are N-type transistors, the thirty-second transistor Q32 and the fourth transistor Q4 are P-type transistors, the forty-first transistor Q41 is an N-type transistor, and the forty-sixth transistor Q46 is a P-type transistor.

[0019] Preferably, the emitter of the forty-third transistor Q40 and the emitter of the third transistor Q3 are connected to each other, the collector of the forty-third transistor Q40 is connected to the data input terminal PC-485B of the second switching circuit, the collector of the third transistor Q3 is connected to the third data output terminal TC-485B of the second switching circuit, and the base of the forty-third transistor Q40 and the base of the third transistor Q3 are connected to the power input terminal of the second switching circuit through the fourteenth resistor R14 and the first zero-six resistor R106.

[0020] The collectors of the 32nd transistor Q32 and the 4th transistor Q4 are connected to each other. The emitter of the 32nd transistor Q32 is connected to the data input terminal PC-485B of the second switching circuit. The emitter of the 4th transistor Q4 is connected to the fourth data output terminal DC-485B of the second switching circuit. The bases of the 32nd transistor Q32 and the 4th transistor Q4 are connected to the midpoint between the 14th resistor R14 and the first 06th resistor R106 through the 96th resistor R96.

[0021] The base of the forty-first transistor Q41 is connected to the switching terminal of the second switching circuit through the first resistor R109. The collector of the forty-first transistor Q41 is connected to the base of the thirty-second transistor Q32 and the base of the fourth transistor Q4. The emitter of the forty-first transistor Q41 is grounded. A first Zener diode Z1 and a first resistor R115 are connected in parallel between the base and emitter of the forty-first transistor Q41. The emitter of the forty-sixth transistor Q46 is connected to the base of the forty-third transistor Q40 and the base of the third transistor Q3. The base of the forty-sixth transistor Q46 is connected to the base of the thirty-second transistor Q32 and the base of the fourth transistor Q4 through the eighth resistor R8. The collector of the forty-sixth transistor Q46 is grounded. An eighty-sixth resistor R86 is connected between the base and collector of the forty-sixth transistor Q46.

[0022] Preferably, the data input pin A of the first communication chip is connected to the first data output terminal TC-485A of the first switch switching circuit, the data input pin B of the first communication chip is connected to the third data output terminal TC-485B of the second switch switching circuit, and a second resistor R2 is provided between the data input pin A and the data input pin B of the first communication chip; the output terminal RO pin and DI pin of the first communication chip are connected to the input terminal of the charging management controller.

[0023] Preferably, the data input pin A of the second communication chip is connected to the second data output terminal DC-485A of the first switch circuit, the data input pin B of the second communication chip is connected to the fourth data output terminal DC-485B of the second switch circuit, and a third resistor R307 is provided between the data input pin A and the data input pin B of the second communication chip; the output pins RO and DI of the second communication chip are connected to the input terminal of the charging power controller.

[0024] Preferably, pins A6 / B6 of the input TYPE-C interface are DP data pins, connected to the data input terminal PC-485A of the first switch circuit; pins A7 / B7 of the input TYPE-C interface are DN data pins, connected to the data input terminal PC-485B of the second switch circuit; pins A4 / B4 / A9 / B9 of the input TYPE-C interface are power supply pins USB-VCC, connected to the switching terminals of the first and second switch circuits.

[0025] Preferably, the system upgrade communication methods between the input TYPE-C interface, the first switch switching circuit, the second switch switching circuit, the first communication chip, the second communication chip, the charging management controller, and the charging power controller include RS485, CAN, and IIC.

[0026] In the aforementioned dual-upgrade control circuit for a high-power agricultural drone charging system, the first communication chip is connected to the charging management controller, and the second communication chip is connected to the charging power controller. The first and second communication chips are respectively connected to the same input TYPE-C interface via the first and second switching circuits. The two outputs of the first and second switching circuits are respectively connected to the first and second communication chips. Furthermore, the first and second switching circuits have a circuit switching function. By controlling the switching circuit, the upgrade data of the charging management controller and the charging power controller transmitted through the input TYPE-C interface can be sent to the corresponding charging management controller and charging power controller via the first and second switching circuits, the first and second communication chips, respectively, for individual upgrades of the charging management controller and the charging power controller. By using the switching state of a transistor to switch the data path of the input upgrade signal, the corresponding charging power controller and charging management controller are upgraded. The dual-upgrade control circuit for the high-power agricultural drone charging system of this invention has a simple structure, uses fewer components and interfaces, and is easy to operate. The circuit structure of this invention is easy to implement, low in cost, and easy to promote. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the dual-upgrade control circuit of the high-power agricultural drone charging system according to an embodiment of the present invention.

[0028] Figure 2 This is a schematic diagram of the circuit structure of the first switch switching circuit of the dual-upgrade control circuit of the high-power agricultural drone charging system according to an embodiment of the present invention.

[0029] Figure 3 This is a schematic diagram of the circuit structure of the second switch switching circuit of the dual-upgrade control circuit of the high-power agricultural drone charging system according to an embodiment of the present invention.

[0030] Figure 4 This is a schematic diagram of the circuit structure of the first communication chip in the dual-upgrade control circuit of the high-power agricultural drone charging system according to an embodiment of the present invention.

[0031] Figure 5This is a schematic diagram of the circuit structure of the second communication chip in the dual-upgrade control circuit of the high-power agricultural drone charging system according to an embodiment of the present invention.

[0032] Figure 6 This is a schematic diagram of the pin structure of the input TYPE-C interface of the dual-upgrade control circuit of the high-power agricultural drone charging system according to an embodiment of the present invention. Detailed Implementation

[0033] This embodiment takes the dual-upgrade control circuit of a high-power agricultural drone charging system as an example. The invention will be described in detail below with reference to specific embodiments and accompanying drawings.

[0034] A dual-upgrade control circuit for a high-power agricultural drone charging system is disclosed. This circuit allows for separate upgrades of the charging management controller and the charging power controller via an external Type-C interface. The circuit includes an input Type-C interface, a first switching circuit, a second switching circuit, a first communication chip, and a second communication chip.

[0035] The data input terminals of the first switch switching circuit and the second switch switching circuit are respectively connected to the two data input pins of the input TYPE-C interface. The two data output terminals of the first switch switching circuit and the second switch switching circuit are respectively cross-connected to the data input terminals of the first communication chip and the second communication chip. The data output terminal of the first communication chip is connected to the charging management controller, and the data output terminal of the second communication chip is connected to the charging power controller.

[0036] The first switch switching circuit and the second switch switching circuit are used to switch the transmission path of the upgrade data signal, so that the upgrade data of the charging management controller and the charging power controller transmitted through the same input TYPE-C interface are respectively transmitted to the charging management controller and the charging power controller, thereby realizing the software upgrade of the charging management controller and the charging power controller.

[0037] Preferably, the data input terminal PC-485A of the first switch circuit is connected to the DP pin of the input TYPE-C interface, and the data input terminal PC-485B of the second switch circuit is connected to the DN pin of the input TYPE-C interface; the switching terminals of the first and second switch circuits are connected to the power supply terminal of the input TYPE-C interface; and the power input terminals of the first and second switch circuits are connected to the power module.

[0038] The first switching circuit includes a first data transmission branch, a second data transmission branch, and a first switching branch. The first data transmission branch has a first data output terminal TC-485A, and the second data transmission branch has a second data output terminal DC-485A. The first switching branch is used to switch input data between the first data transmission branch and the second data transmission branch.

[0039] The second switching circuit includes a third data transmission branch, a fourth data transmission branch, and a second switching branch. The third data transmission branch has a third data output terminal TC-485B, and the fourth data transmission branch has a fourth data output terminal DC-485B. The second switching branch is used to switch input data between the third data transmission branch and the fourth data transmission branch.

[0040] The first data output terminal TC-485A is connected to the first data input terminal TC-485A' of the first communication chip, and the third data output terminal TC-485B is connected to the second data input terminal TC-485B' of the first communication chip; the data output terminal of the first communication chip is connected to the charging management controller.

[0041] The second data output terminal DC-485A is connected to the first data input terminal DC-485A' of the second communication chip, and the fourth data output terminal DC-485B is connected to the second data input terminal DC-485B' of the second communication chip; the data output terminal of the second communication chip is connected to the charging power controller.

[0042] Specifically, in this embodiment, the first data output terminal TC-485A of the first data transmission branch in the first switch switching circuit and the third data output terminal TC-485B of the third data transmission branch in the second switch switching circuit are connected to the first communication chip to realize the software upgrade of the charging management controller.

[0043] Specifically, in this embodiment, the second data output terminal DC-485A of the second data transmission branch in the second switch switching circuit and the fourth data output terminal DC-485B of the fourth data transmission branch in the second switch switching circuit are connected to the second communication chip to realize the software upgrade of the charging power controller.

[0044] Specifically, in this embodiment, the switching terminal USB-VCC of the first switching circuit and the switching terminal USB-VCC of the second switching circuit are both connected to the power supply terminal A4 / B4 / A9 / B9 of the input TYPE-C interface.

[0045] Specifically, when the power supply terminal USB-VCC of the input TYPE-C interface is low, the switching terminals of the first and second switching branches are also low. The data path connects to the first communication chip via the first and third data transmission branches to transmit upgrade data to the charging management controller. When the power supply terminal USB-VCC of the input TYPE-C interface is high, the switching terminals of the first and second switching branches are also high. The data path switches to connect to the second communication chip via the second and fourth data transmission branches to transmit upgrade data to the charging power controller.

[0046] Specifically, in this embodiment, the power input terminals of the first switch switching circuit, the second switch switching circuit, the first communication chip, and the second communication chip are all connected to the output terminal SMCU-3.3V of the power module.

[0047] Specifically, the dual-upgrade control circuit of the high-power agricultural drone charging system also includes a power module (not shown), which is used to supply power to the first switch switching circuit, the second switch switching circuit, the first communication chip, the second communication chip, the charging management controller, and the charging power controller.

[0048] Preferably, in the first switching circuit, the first data transmission branch includes a forty-third transistor Q43 and a first transistor Q1, the second data transmission branch includes a forty-second transistor Q42 and a second transistor Q2, and the first switching branch includes a forty-fourth transistor Q44 and a forty-eighth transistor Q48; wherein, the forty-third transistor Q43 and the first transistor Q1 are N-type transistors, the forty-second transistor Q42 and the second transistor Q2 are P-type transistors, the forty-fourth transistor Q44 is an N-type transistor, and the forty-eighth transistor Q48 is a P-type transistor.

[0049] Preferably, the emitter of the forty-third transistor Q43 and the emitter of the first transistor Q1 are connected to each other, the collector of the forty-third transistor Q43 is connected to the data input terminal PC-485A of the first switching circuit, the collector of the first transistor Q1 is connected to the first data output terminal TC-485A of the first switching circuit, and the base of the forty-third transistor Q43 and the base of the first transistor Q1 are connected to the power input terminal of the first switching circuit through the first 116 resistor R116 and the first 17 resistor R117.

[0050] The collector of the forty-second transistor Q42 and the collector of the second transistor Q2 are connected to each other. The emitter of the forty-second transistor Q42 is connected to the data input terminal PC-485A of the first switching circuit. The emitter of the second transistor Q2 is connected to the second data output terminal DC-485A of the first switching circuit. The base of the forty-second transistor Q42 and the base of the second transistor Q2 are connected to the midpoint between the first one-six resistor R116 and the first one-seven resistor R117 through the first two-four resistor R124.

[0051] The base of the forty-fourth transistor Q44 is connected to the switching terminal of the first switching circuit through a first two-zero resistor R120. The collector of the forty-fourth transistor Q44 is connected to the base of the forty-second transistor Q42 and the base of the second transistor Q2. The emitter of the forty-fourth transistor Q44 is grounded. A second Zener diode Z2 and a first two-two resistor R122 are connected in parallel between the base and emitter of the forty-fourth transistor Q44. The emitter of the forty-eighth transistor Q48 is connected to the base of the forty-third transistor Q43 and the base of the first transistor Q1. The base of the forty-eighth transistor Q48 is connected to the base of the forty-second transistor Q42 and the base of the second transistor Q2 through a first zero-five resistor R105. The collector of the forty-eighth transistor Q48 is grounded. A first two-three resistor R123 is connected between the base and collector of the forty-eighth transistor Q48.

[0052] Specifically, the input terminals of both the first data transmission branch and the second data transmission branch are connected to the data input terminal PC-485A of the first switching circuit. The first switching branch is used to connect the data link of the data input terminal PC-485A to the first data output terminal TC-485A of the first data transmission branch, or to the second data output terminal DC-485A of the second data transmission branch.

[0053] Preferably, in the second switching circuit, the third data transmission branch includes a forty-third transistor Q40 and a third transistor Q3, the fourth data transmission branch includes a thirty-second transistor Q32 and a fourth transistor Q4, and the second switching branch includes a forty-first transistor Q41 and a forty-sixth transistor Q46; wherein, the forty-third transistor Q40 and the third transistor Q3 are N-type transistors, the thirty-second transistor Q32 and the fourth transistor Q4 are P-type transistors, the forty-first transistor Q41 is an N-type transistor, and the forty-sixth transistor Q46 is a P-type transistor.

[0054] Preferably, the emitter of the forty-third transistor Q40 and the emitter of the third transistor Q3 are connected to each other, the collector of the forty-third transistor Q40 is connected to the data input terminal PC-485B of the second switching circuit, the collector of the third transistor Q3 is connected to the third data output terminal TC-485B of the second switching circuit, and the base of the forty-third transistor Q40 and the base of the third transistor Q3 are connected to the power input terminal of the second switching circuit through the fourteenth resistor R14 and the first zero-six resistor R106.

[0055] The collectors of the 32nd transistor Q32 and the 4th transistor Q4 are connected to each other. The emitter of the 32nd transistor Q32 is connected to the data input terminal PC-485B of the second switching circuit. The emitter of the 4th transistor Q4 is connected to the fourth data output terminal DC-485B of the second switching circuit. The bases of the 32nd transistor Q32 and the 4th transistor Q4 are connected to the midpoint between the 14th resistor R14 and the first 06th resistor R106 through the 96th resistor R96.

[0056] The base of the forty-first transistor Q41 is connected to the switching terminal of the second switching circuit through the first resistor R109. The collector of the forty-first transistor Q41 is connected to the base of the thirty-second transistor Q32 and the base of the fourth transistor Q4. The emitter of the forty-first transistor Q41 is grounded. A first Zener diode Z1 and a first resistor R115 are connected in parallel between the base and emitter of the forty-first transistor Q41. The emitter of the forty-sixth transistor Q46 is connected to the base of the forty-third transistor Q40 and the base of the third transistor Q3. The base of the forty-sixth transistor Q46 is connected to the base of the thirty-second transistor Q32 and the base of the fourth transistor Q4 through the eighth resistor R8. The collector of the forty-sixth transistor Q46 is grounded. An eighty-sixth resistor R86 is connected between the base and collector of the forty-sixth transistor Q46.

[0057] Specifically, the input terminals of both the third and fourth data transmission branches are connected to the data input terminal PC-485B of the second switching circuit. The second switching branch is used to connect the data link of the data input terminal PC-485B to the third data output terminal TC-485B of the third data transmission branch, or to the fourth data output terminal DC-485B of the fourth data transmission branch.

[0058] Preferably, the data input pin A of the first communication chip is connected to the first data output terminal TC-485A of the first switch switching circuit, the data input pin B of the first communication chip is connected to the third data output terminal TC-485B of the second switch switching circuit, and a second resistor R2 is provided between the data input pin A and the data input pin B of the first communication chip; the output terminal RO pin and DI pin of the first communication chip are connected to the input terminal of the charging management controller.

[0059] Preferably, the data input pin A of the second communication chip is connected to the second data output terminal DC-485A of the first switch circuit, the data input pin B of the second communication chip is connected to the fourth data output terminal DC-485B of the second switch circuit, and a third resistor R307 is provided between the data input pin A and the data input pin B of the second communication chip; the output pins RO and DI of the second communication chip are connected to the input terminal of the charging power controller.

[0060] Preferably, pins A6 / B6 of the input TYPE-C interface are DP data pins, connected to the data input terminal PC-485A of the first switch circuit; pins A7 / B7 of the input TYPE-C interface are DN data pins, connected to the data input terminal PC-485B of the second switch circuit; pins A4 / B4 / A9 / B9 of the input TYPE-C interface are power supply pins USB-VCC, connected to the switching terminals of the first and second switch circuits.

[0061] Preferably, the system upgrade communication methods between the input TYPE-C interface, the first switch switching circuit, the second switch switching circuit, the first communication chip, the second communication chip, the charging management controller, and the charging power controller include RS485, CAN, and IIC.

[0062] Specifically, in this embodiment, a dual-upgrade control circuit for a high-power agricultural drone charging system automatically switches two transistors to upgrade the two control circuits of the charging system separately based on the signal source signal.

[0063] The high-power agricultural drone charging system with dual-upgrade control circuit includes a first switch switching circuit, a second switch switching circuit, a first communication chip, a second communication chip, and an input TYPE-C interface.

[0064] The communication input ports of the first and second switch switching circuits of the high-power agricultural drone charging system are connected to the TYPE-C port signal terminals, respectively. The communication output ports of the first and second switch switching circuits are connected to the first and second communication chips, respectively. The communication switching signal is connected to the TYPE-C port power supply terminal.

[0065] When the charging management controller is upgraded, input communication data A switches to the first communication chip via the first switch switching circuit, and input communication data B switches to the first communication chip via the second switch switching circuit. When the charging power controller is upgraded, input communication data A switches to the second communication chip via the first switch switching circuit, and input communication data B switches to the second communication chip via the second switch switching circuit.

[0066] The charging management controller is in the default upgrade working mode, while the charging power controller is in the control switching upgrade working mode.

[0067] The charging management controller operates in the default upgrade mode, using only TYPE_ for data communication and not using the TYPE-C data cable to power the USB_VCC. The charging power controller controls the switching to the upgrade mode, using the TYPE-C data cable to power the USB_VCC.

[0068] The communication methods for dual-system upgrades include, but are not limited to, RS485, CAN, or IIC.

[0069] The first switch circuit input port PC_485A is connected to the TYPE-C interface DP, and the second switch circuit input port PC_485B is connected to the TYPE-C interface DN. SMCU_3.3V supplies power to the switch circuit, communication chip, charging management controller, and charging power controller circuits. In the default charging management controller upgrade operating state, SMCU_3.3V is high, turning on the N-transistors Q43 and Q1 of the first switch circuit through R116 and R117, allowing the communication upgrade data DP to reach the first communication chip through Q43 and Q1. When SMCU_3.3V is high, it turns on the N-transistors Q40 and Q3 of the second switch circuit through R14 and R106, allowing the communication upgrade data DN to reach the first communication chip through Q40 and Q3, thus performing the charging management controller upgrade program.

[0070] In the first switching circuit, transistors Q2 and Q42 are P-type transistors. In the default state, SMCU_3.3V is high, flowing through resistors R116 and R124 to the base (B) of transistors Q2 and Q42, thus turning them off. In the second switching circuit, transistors Q4 and Q32 are also P-type transistors. In the default state, SMCU_3.3V is high, flowing through resistors R14 and R96 to the base (B) of transistors Q4 and Q32, thus turning them off.

[0071] The first switching circuit uses transistor Q48, a P-type transistor, which interlocks the two DP and DN communication data switches to ensure that the two communication data channels (DP and DN) do not crosstalk or interfere with each other. In the default upgrade state, the SMCU_3.3V high level of transistor Q48 passes through resistors R116, R124, and R105, making its base (B) high and thus transistor Q48 off. This does not affect the turn-on of transistors Q43 and Q1. The second switching circuit uses transistor Q46, also a P-type transistor, which interlocks the two DP and DN communication data switches to ensure that the two communication data channels (DP and DN) do not crosstalk or interfere with each other. In the default upgrade state, the SMCU_3.3V high level of transistor Q46 passes through resistors R14, R96, and R8, making its base (B) high and thus transistor Q46 off. This does not affect the turn-on of transistors Q40 and Q3.

[0072] The first switch circuit input port PC_485A is connected to the TYPE-C interface DP, and the second switch circuit input port PC_485B is connected to the TYPE-C interface DN. SMCU_3.3V supplies power to the switch circuit, communication chip, charging management controller, and charging power controller circuit. When switching to the charging power controller upgrade mode, USB_VCC is high, turning on transistor Q44 through R120. Transistor Q44 then turns on the P-transistors Q42 and Q2 of the first switch circuit, allowing the communication upgrade data DP to pass through Q42 and Q2 to the second communication chip. When USB_VCC is high, transistor Q41 is turned on through R109. Transistor Q41 then turns on the P-transistors Q4 and Q32 of the second switch circuit, allowing the communication upgrade data DN to pass through Q4 and Q32 to the second communication chip, thus performing the charging power controller upgrade program.

[0073] In the first switching circuit, transistors Q1 and Q43 are neutral (N) transistors. During the upgrade of the charging power controller, SMCU_3.3V is high, flowing through R116 and R117 to the base (B) of transistors Q1 and Q43. However, the high level at the base of transistors Q1 and Q43 is pulled low by transistor Q48, turning them off. This is because USB_VCC is high, turning on transistor Q44, which in turn turns on the base of transistors Q2 and Q42, making them P-channel transistors (P-channel transistors) low. Therefore, the base of transistor Q48 is low, turning on the P-channel transistor. This interlocking mechanism ensures that the two DP and DN communication data switches do not crosstalk or interfere with each other.

[0074] In the second switching circuit, transistors Q3 and Q40 are neutral (N) transistors. During the upgrade of the charging power controller, SMCU_3.3V is high, flowing through R14 and R106 to the base (B) of transistors Q3 and Q40. However, the high level at the base of transistors Q3 and Q40 is pulled low by transistor Q46, turning them off. This is because USB_VCC is high, turning on transistor Q41, which in turn turns on the base of transistors Q4 and Q32, making the P-channel transistors (P-channel transistors) low. Therefore, the base of transistor Q46 is low, turning on the P-channel transistor. This interlocking mechanism ensures that the two DP and DN communication data switches do not crosstalk or interfere with each other.

[0075] In the aforementioned dual-upgrade control circuit for a high-power agricultural drone charging system, the first communication chip is connected to the charging management controller, and the second communication chip is connected to the charging power controller. The first and second communication chips are respectively connected to the same input TYPE-C interface via the first and second switching circuits. The two outputs of the first and second switching circuits are respectively connected to the first and second communication chips. Furthermore, the first and second switching circuits have a circuit switching function. By controlling the switching circuit, the upgrade data of the charging management controller and the charging power controller transmitted through the input TYPE-C interface can be sent to the corresponding charging management controller and charging power controller via the first and second switching circuits, the first and second communication chips, respectively, for individual upgrades of the charging management controller and the charging power controller. By using the switching state of a transistor to switch the data path of the input upgrade signal, the corresponding charging power controller and charging management controller are upgraded. The dual-upgrade control circuit for the high-power agricultural drone charging system of this invention has a simple structure, uses fewer components and interfaces, and is easy to operate. The circuit structure of this invention is easy to implement, low in cost, and easy to promote.

[0076] It should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can be modified and varied in various ways. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of the present invention should be included within the scope of protection of the present invention.

Claims

1. A dual-upgrade control circuit for a high-power agricultural drone charging system, used to upgrade the charging management controller and the charging power controller separately through an external TYPE-C interface, characterized in that, It includes a Type-C input interface, a first switch circuit, a second switch circuit, a first communication chip, and a second communication chip, wherein... The data input terminals of the first switch switching circuit and the second switch switching circuit are respectively connected to the two data input pins of the input TYPE-C interface. The two data output terminals of the first switch switching circuit and the second switch switching circuit are respectively cross-connected to the data input terminals of the first communication chip and the second communication chip. The data output terminal of the first communication chip is connected to the charging management controller, and the data output terminal of the second communication chip is connected to the charging power controller. The first switch switching circuit and the second switch switching circuit are used to switch the transmission path of the upgrade data signal, so that the upgrade data of the charging management controller and the charging power controller transmitted through the same input TYPE-C interface are respectively transmitted to the charging management controller and the charging power controller, thereby realizing the software upgrade of the charging management controller and the charging power controller; The data input terminal PC-485A of the first switch circuit is connected to the DP pin of the input TYPE-C interface, and the data input terminal PC-485B of the second switch circuit is connected to the DN pin of the input TYPE-C interface; the switching terminals of the first and second switch circuits are connected to the power supply terminals of the input TYPE-C interface; the power input terminals of the first and second switch circuits are connected to the power module. The first switching circuit includes a first data transmission branch, a second data transmission branch, and a first switching branch. The first data transmission branch has a first data output terminal TC-485A, and the second data transmission branch has a second data output terminal DC-485A. The first switching branch is used to switch input data between the first data transmission branch and the second data transmission branch. The second switching circuit includes a third data transmission branch, a fourth data transmission branch, and a second switching branch. The third data transmission branch has a third data output terminal TC-485B, and the fourth data transmission branch has a fourth data output terminal DC-485B. The second switching branch is used to switch input data between the third data transmission branch and the fourth data transmission branch. The first data output terminal TC-485A is connected to the first data input terminal TC-485A' of the first communication chip, and the third data output terminal TC-485B is connected to the second data input terminal TC-485B' of the first communication chip; the data output terminal of the first communication chip is connected to the charging management controller. The second data output terminal DC-485A is connected to the first data input terminal DC-485A' of the second communication chip, and the fourth data output terminal DC-485B is connected to the second data input terminal DC-485B' of the second communication chip; the data output terminal of the second communication chip is connected to the charging power controller.

2. The dual-upgrade control circuit for the high-power agricultural drone charging system as described in claim 1, characterized in that, The first data transmission branch includes a 43rd transistor Q43 and a 1st transistor Q1; the second data transmission branch includes a 42nd transistor Q42 and a 2nd transistor Q2; and the first switching branch includes a 44th transistor Q44 and a 48th transistor Q48. Specifically, the 43rd transistor Q43 and the 1st transistor Q1 are N-type transistors, the 42nd transistor Q42 and the 2nd transistor Q2 are P-type transistors, the 44th transistor Q44 is an N-type transistor, and the 48th transistor Q48 is a P-type transistor.

3. The dual-upgrade control circuit for the high-power agricultural drone charging system as described in claim 2, characterized in that, The emitter of the forty-third transistor Q43 and the emitter of the first transistor Q1 are connected to each other. The collector of the forty-third transistor Q43 is connected to the data input terminal PC-485A of the first switching circuit. The collector of the first transistor Q1 is connected to the first data output terminal TC-485A of the first switching circuit. The base of the forty-third transistor Q43 and the base of the first transistor Q1 are connected to the power input terminal of the first switching circuit through the first 116 resistor R116 and the first 17 resistor R117. The collector of the forty-second transistor Q42 and the collector of the second transistor Q2 are connected to each other. The emitter of the forty-second transistor Q42 is connected to the data input terminal PC-485A of the first switching circuit. The emitter of the second transistor Q2 is connected to the second data output terminal DC-485A of the first switching circuit. The base of the forty-second transistor Q42 and the base of the second transistor Q2 are connected to the midpoint between the first one-six resistor R116 and the first one-seven resistor R117 through the first two-four resistor R124. The base of the forty-fourth transistor Q44 is connected to the switching terminal of the first switching circuit through a first two-zero resistor R120. The collector of the forty-fourth transistor Q44 is connected to the base of the forty-second transistor Q42 and the base of the second transistor Q2. The emitter of the forty-fourth transistor Q44 is grounded. A second Zener diode Z2 and a first two-two resistor R122 are connected in parallel between the base and emitter of the forty-fourth transistor Q44. The emitter of the forty-eighth transistor Q48 is connected to the base of the forty-third transistor Q43 and the base of the first transistor Q1. The base of the forty-eighth transistor Q48 is connected to the base of the forty-second transistor Q42 and the base of the second transistor Q2 through a first zero-five resistor R105. The collector of the forty-eighth transistor Q48 is grounded. A first two-three resistor R123 is connected between the base and collector of the forty-eighth transistor Q48.

4. The dual-upgrade control circuit for the high-power agricultural drone charging system as described in claim 1, characterized in that, The third data transmission branch includes a forty-third transistor Q40 and a third transistor Q3; the fourth data transmission branch includes a thirty-second transistor Q32 and a fourth transistor Q4; and the second switching branch includes a forty-first transistor Q41 and a forty-sixth transistor Q46. Specifically, the forty-third transistor Q40 and the third transistor Q3 are N-type transistors, the thirty-second transistor Q32 and the fourth transistor Q4 are P-type transistors, the forty-first transistor Q41 is an N-type transistor, and the forty-sixth transistor Q46 is a P-type transistor.

5. The dual-upgrade control circuit for the high-power agricultural drone charging system as described in claim 4, characterized in that, The emitter of the forty-third transistor Q40 and the emitter of the third transistor Q3 are connected to each other. The collector of the forty-third transistor Q40 is connected to the data input terminal PC-485B of the second switching circuit. The collector of the third transistor Q3 is connected to the third data output terminal TC-485B of the second switching circuit. The base of the forty-third transistor Q40 and the base of the third transistor Q3 are connected to the power input terminal of the second switching circuit through the fourteenth resistor R14 and the first zero-six resistor R106. The collectors of the 32nd transistor Q32 and the 4th transistor Q4 are connected to each other. The emitter of the 32nd transistor Q32 is connected to the data input terminal PC-485B of the second switching circuit. The emitter of the 4th transistor Q4 is connected to the fourth data output terminal DC-485B of the second switching circuit. The bases of the 32nd transistor Q32 and the 4th transistor Q4 are connected to the midpoint between the 14th resistor R14 and the first 06th resistor R106 through the 96th resistor R96. The base of the forty-first transistor Q41 is connected to the switching terminal of the second switching circuit through the first resistor R109. The collector of the forty-first transistor Q41 is connected to the base of the thirty-second transistor Q32 and the base of the fourth transistor Q4. The emitter of the forty-first transistor Q41 is grounded. A first Zener diode Z1 and a first resistor R115 are connected in parallel between the base and emitter of the forty-first transistor Q41. The emitter of the forty-sixth transistor Q46 is connected to the base of the forty-third transistor Q40 and the base of the third transistor Q3. The base of the forty-sixth transistor Q46 is connected to the base of the thirty-second transistor Q32 and the base of the fourth transistor Q4 through the eighth resistor R8. The collector of the forty-sixth transistor Q46 is grounded. An eighty-sixth resistor R86 is connected between the base and collector of the forty-sixth transistor Q46.

6. The dual-upgrade control circuit for the high-power agricultural drone charging system as described in claim 1, characterized in that, The data input pin A of the first communication chip is connected to the first data output terminal TC-485A of the first switch switching circuit, and the data input pin B of the first communication chip is connected to the third data output terminal TC-485B of the second switch switching circuit. A second resistor R2 is provided between the data input pin A and the data input pin B of the first communication chip. The output terminals RO and DI of the first communication chip are connected to the input terminal of the charging management controller.

7. The dual-upgrade control circuit for the high-power agricultural drone charging system as described in claim 1, characterized in that, The data input pin A of the second communication chip is connected to the second data output terminal DC-485A of the first switch circuit, and the data input pin B of the second communication chip is connected to the fourth data output terminal DC-485B of the second switch circuit. A third zero-seven resistor R307 is provided between the data input pin A and the data input pin B of the second communication chip. The output terminals RO and DI of the second communication chip are connected to the input terminal of the charging power controller.

8. The dual-upgrade control circuit for the high-power agricultural drone charging system as described in claim 1, characterized in that, The A6 / B6 pins of the TYPE-C input interface are DP data pins, connected to the data input terminal PC-485A of the first switch circuit; the A7 / B7 pins of the TYPE-C input interface are DN data pins, connected to the data input terminal PC-485B of the second switch circuit; the A4 / B4 / A9 / B9 pins of the TYPE-C input interface are USB-VCC power supply pins, connected to the switching terminals of the first and second switch circuits.

9. The dual-upgrade control circuit for the high-power agricultural drone charging system as described in claim 1, characterized in that, The system upgrade communication methods between the input TYPE-C interface, the first switch switching circuit, the second switch switching circuit, the first communication chip, the second communication chip, the charging management controller, and the charging power controller include RS485, CAN, and IIC.

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