Multi-source power supply power supply right arbitration and seamless switching method and related device

Abstract

This invention discloses a method and related apparatus for multi-source power supply right determination and seamless switching in eVTOL. The method includes: after the multi-source redundant power supply intelligent switching system is powered on, a dynamic threshold ideal diode module detects the output voltage of the main power supply unit and the backup power supply unit in the multi-source power supply unit in real time, and calculates the voltage difference between the output voltage of the main power supply unit and the highest output voltage of the N low-voltage battery packs in the backup power supply unit; based on the voltage difference, a power supply right determination is performed to obtain the power supply right of at least one power supply unit in the multi-source power supply unit; and a seamless switching process of the power supply to the dual distribution bus is performed according to the power supply right of at least one power supply unit in the multi-source power supply unit. In the embodiments of this invention, the power supply right of the multi-source power supply units can be accurately allocated, completely avoiding the problems of backflow from the low-potential power supply unit and uneven current distribution among the multi-source power supply units, and the accuracy of power supply right determination is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of power management technology for eVTOL, and in particular to a method and related apparatus for deciding and seamlessly switching power supply rights for eVTOL from multiple power sources. Background Technology

[0002] The low-voltage power distribution system of eVTOL (electric vertical takeoff and landing aircraft) adopts a multi-source redundant power architecture, integrating power supply units such as high-voltage DC-DC, ground power supply, and multiple low-voltage batteries. In order to ensure the continuous and stable power supply of airborne electronic equipment, it is necessary to establish a precise multi-source power supply right adjudication mechanism and a seamless fault switching method.

[0003] Aerospace-grade power supply systems require power supply authority determination to meet the requirements of "millivolt-level precision, multi-power supply coordination, and zero power consumption in main and backup systems," and power switching to meet the requirements of "microsecond-level response, seamless succession, and no power interruption." However, existing multi-source power supply authority determination relies mainly on diode forward voltage drop or simple voltage comparators, and the switching methods are mostly relay mechanical switches or ordinary semiconductor switches, which cannot meet the stringent requirements of eVTOL. Targeted methodological innovation is urgently needed.

[0004] Existing eVTOL multi-source power supply power supply rights determination adopts either a fixed voltage drop determination method or a simple voltage comparison method: the diode fixed voltage drop determination method relies on the forward conduction voltage drop of the diode of about 0.7V to give priority to the conduction of high voltage power supply and realize the allocation of power supply rights; the simple voltage comparison method identifies the power supply voltage difference through a voltage comparator and controls the semiconductor switch on and off; power switching adopts either a relay switching method or a general MOSFET switching method. The relay realizes power switching through the opening and closing of mechanical contacts, while the general MOSFET switching method controls the MOSFET on and off through a voltage comparator with a fixed threshold. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art. This invention provides a method and related device for multi-source power supply right determination and seamless switching in eVTOL. By using a dynamic threshold ideal diode module to perform power supply determination with a dynamic voltage determination threshold, the power supply right of multi-source power supply units can be accurately allocated, completely avoiding backflow from low-potential power supply units and uneven current distribution among multi-source power supply units, and greatly improving the accuracy of power supply right determination.

[0006] To address the aforementioned technical problems, this invention provides a method for multi-source power supply right determination and seamless switching in eVTOL, applied to a multi-source redundant power supply intelligent switching system for eVTOL low-voltage distribution boxes. The multi-source redundant power supply intelligent switching system includes a dynamic threshold ideal diode module, a multi-source power supply unit, and dual distribution buses. The method includes: After the multi-source redundant power supply intelligent switching system is powered on, the dynamic threshold ideal diode module detects the output voltage of the main power supply unit and the backup power supply unit in the multi-source power supply unit in real time, and calculates the voltage difference between the output voltage of the main power supply unit and the highest output voltage of the N low-voltage battery packs in the backup power supply unit to obtain the voltage difference between the main power supply unit and the backup power supply unit. The dynamic threshold ideal diode module performs power supply authority adjudication based on the voltage difference between the main power supply unit and the backup power supply unit, thereby obtaining the power supply authority of at least one power supply unit among the multi-source power supply units. The dynamic threshold ideal diode module performs seamless power supply switching to the dual distribution bus according to the power supply authority of at least one of the multi-source power supply units.

[0007] Optionally, the main power supply unit consists of a high-voltage DC-DC power supply unit and / or a ground power supply unit; the backup power supply unit is a low-voltage battery system, which consists of N low-voltage battery packs.

[0008] Optionally, the dynamic threshold ideal diode module performs power supply authority determination based on the voltage difference between the main power supply unit and the backup power supply unit, obtaining the power supply authority of at least one power supply unit among the multi-source power supply units, including: The dynamic threshold ideal diode module compares the voltage difference with the dynamic voltage decision threshold. When the voltage difference is greater than the dynamic voltage decision threshold, the dynamic threshold ideal diode module decides that the main power supply unit has the right to supply power, and the dynamic threshold ideal diode module controls the MOSFET on the backup power supply unit side to turn off so that the backup power supply unit completely stops supplying power. The dynamic voltage decision threshold is 25mV. When the voltage difference is less than or equal to the dynamic voltage decision threshold, the dynamic threshold ideal diode module decides that the main power supply unit and the backup power supply unit jointly obtain the power supply right. The dynamic threshold ideal diode module decides to control the MOSFET on the main power supply unit side to remain on and the MOSFET on the backup power supply unit side to remain on. The main power supply unit and the backup power supply unit distribute the power supply current to the dual distribution bus according to the voltage ratio.

[0009] Optionally, when the backup power supply unit obtains power supply rights, the dynamic threshold ideal diode module performs step-by-step collaborative power supply decision processing on the N low-voltage battery packs in the backup power supply unit to obtain a collaborative power supply decision for at least one low-voltage battery pack in the backup power supply unit.

[0010] Optionally, the dynamic threshold ideal diode module performs step-by-step coordinated power supply decision processing on the N groups of low-voltage battery packs in the backup power supply unit to obtain a coordinated power supply decision for at least one group of low-voltage battery packs in the backup power supply unit, including: The dynamic threshold ideal diode module detects and processes the output voltage of the N low-voltage battery packs in the backup power supply unit to obtain the output voltage corresponding to the N low-voltage battery packs. Calculate the voltage difference between the low-voltage battery pack with the highest output voltage and other low-voltage battery packs with the same output voltage in the N low-voltage battery packs, obtain the voltage difference between the low-voltage battery pack with the highest output voltage and other low-voltage battery packs with the same output voltage, and determine whether the voltage difference between the low-voltage battery pack with the highest output voltage and other low-voltage battery packs with the same output voltage is greater than the dynamic voltage decision threshold. If the voltage difference between the low-voltage battery pack with the highest output voltage and the low-voltage battery pack with the other output voltages is greater than the dynamic voltage decision threshold, the dynamic threshold ideal diode module decides that the low-voltage battery pack with the highest output voltage among the N low-voltage battery packs shall be granted the right to supply power. If the voltage difference between the low-voltage battery pack with the highest output voltage and other low-voltage battery packs with different output voltages is less than or equal to the dynamic voltage decision threshold, the dynamic threshold ideal diode module decides that the low-voltage battery pack with a voltage difference less than or equal to the dynamic voltage decision threshold among the N low-voltage battery packs shall obtain the right to cooperate in power supply.

[0011] Optionally, after the dynamic threshold ideal diode module performs step-by-step coordinated power supply decision processing on the N groups of low-voltage battery packs in the backup power supply unit, it further includes: The dynamic threshold ideal diode module performs real-time voltage detection processing on the low-voltage battery pack that is powered by the cooperative power supply to obtain the real-time output voltage of the low-voltage battery pack that is powered by the cooperative power supply. Calculate the voltage difference between the real-time output voltage of the low-voltage battery pack that is co-powered and the output voltage of other low-voltage battery packs that are not co-powered, and determine whether the voltage difference between the real-time output voltage of the low-voltage battery pack that is co-powered and the output voltage of other low-voltage battery packs that are not co-powered is less than or equal to the dynamic voltage decision threshold. If the voltage difference is less than or equal to the dynamic voltage decision threshold, the decision will add the low-voltage battery pack with the voltage difference less than or equal to the dynamic voltage decision threshold to the collaborative power supply until the voltage difference between the N low-voltage battery packs is less than or equal to the dynamic voltage decision threshold, and then the decision will be made to enable the N low-voltage battery packs to perform collaborative power supply.

[0012] Optionally, the dynamic threshold ideal diode module performs seamless power supply switching to the dual distribution bus based on the power supply authority of at least one of the multi-source power supply units, including: The dynamic threshold ideal diode module performs seamless power supply switching to the dual distribution bus by using MOSFET turn-off and turn-on operations according to the power supply authority of at least one of the multi-source power supply units.

[0013] In addition, this invention also provides a multi-source power supply right decision and seamless switching device for eVTOL, applied to the multi-source redundant power supply intelligent switching system of eVTOL low-voltage distribution box. The multi-source redundant power supply intelligent switching system includes a dynamic threshold ideal diode module, a multi-source power supply unit, and dual distribution buses; the device includes: Voltage difference calculation module: After the multi-source redundant power supply intelligent switching system is powered on, the dynamic threshold ideal diode module detects the output voltage of the main power supply unit and the backup power supply unit in the multi-source power supply unit in real time, and calculates the voltage difference between the output voltage of the main power supply unit and the highest output voltage of the N low-voltage battery packs in the backup power supply unit, so as to obtain the voltage difference between the main power supply unit and the backup power supply unit. Decision module: Used by the dynamic threshold ideal diode module to make decision-making on power supply authority based on the voltage difference between the main power supply unit and the backup power supply unit, so as to obtain the power supply authority of at least one power supply unit among the multi-source power supply units; Seamless switching module: used by the dynamic threshold ideal diode module to perform seamless switching of power supply to the dual distribution bus according to the power supply authority of at least one of the multi-source power supply units.

[0014] In addition, embodiments of the present invention also provide an electronic device, including a processor and a memory, wherein the processor runs a computer program or code stored in the memory to implement the multi-source power supply right decision and seamless switching method as described in any of the above.

[0015] In addition, embodiments of the present invention also provide a computer-readable storage medium for storing a computer program or code, which, when executed by a processor, implements the multi-source power supply right decision and seamless switching method as described above.

[0016] In the specific implementation of this invention, the power supply decision is executed by the dynamic threshold ideal diode module with a dynamic voltage decision threshold, which can accurately allocate the power supply rights of multiple power supply units, completely avoid backflow from low potential power supply units and uneven current distribution among multiple power supply units, and greatly improve the accuracy of power supply decision. Within the low-voltage battery pack, a step-by-step collaborative decision is implemented to achieve voltage balance, solving the technical pain point of voltage imbalance within the low-voltage battery pack and extending the battery pack's cycle life. When the main power supply unit is supplying power, the decision is made that the backup power supply unit completely loses its power supply rights. The ideal diode module turns off the MOSFET on the backup power supply unit side, and the backup power supply unit consumes no power, ensuring the emergency backup capability of the backup power supply unit and meeting the backup requirements of eVTOL. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a flowchart illustrating the multi-source power supply right determination and seamless switching method of eVTOL in an embodiment of the present invention. Figure 2 This is a schematic diagram of the structure of the eVTOL multi-source power supply right decision and seamless switching device in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structural composition of the electronic device in an embodiment of the present invention. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1, please refer to Figure 1 , Figure 1 This is a flowchart illustrating the multi-source power supply decision-making and seamless switching method for eVTOL in an embodiment of the present invention.

[0021] like Figure 1As shown, a method for multi-source power supply right determination and seamless switching in eVTOL is applied to a multi-source redundant power supply intelligent switching system for eVTOL low-voltage distribution boxes. The multi-source redundant power supply intelligent switching system includes a dynamic threshold ideal diode module, a multi-source power supply unit, and dual distribution buses. The method includes: S101: After the multi-source redundant power supply intelligent switching system is powered on, the dynamic threshold ideal diode module detects the output voltage of the main power supply unit and the backup power supply unit in the multi-source power supply unit in real time, and calculates the voltage difference between the output voltage of the main power supply unit and the highest output voltage of the N low-voltage battery packs in the backup power supply unit to obtain the voltage difference between the main power supply unit and the backup power supply unit. In the specific implementation of this invention, the main power supply unit is composed of a high-voltage DC-DC power supply unit and / or a ground power supply unit; the backup power supply unit is a low-voltage battery system, which is composed of N low-voltage battery packs.

[0022] Specifically, this embodiment should be a multi-source redundant power supply intelligent switching system for eVTOL low-voltage distribution boxes. The multi-source redundant power supply intelligent switching system includes a dynamic threshold ideal diode module, a multi-source power supply unit, and dual power distribution buses. The multi-source power supply unit consists of a main power supply unit and a backup power supply unit. The main power supply unit consists of a high-voltage DC-DC power supply unit and / or a ground power supply unit. The backup power supply unit is a low-voltage battery system, consisting of N low-voltage battery packs. Under normal circumstances, the output voltage of the ground power supply unit in the main power supply unit is a stable 50V, the output voltage of the high-voltage DC-DC power supply unit is a stable 49V, and the output voltage of the N low-voltage battery packs in the backup power supply unit is between 48V and 50V. When the low-voltage battery packs are fully charged, the output voltage can reach 50V. After the low-voltage battery packs have been working continuously for a period of time, their output voltage decreases as the battery capacity decreases.

[0023] After the multi-source redundant power supply intelligent switching system is powered on, that is, after the eVTOL low-voltage distribution box is powered on, the detection circuit in the dynamic threshold ideal diode module detects and collects the output voltage of the multi-source power supply unit in real time. Then, the voltage values ​​are sorted from high to low, and the multi-source power supply units are marked as power supply 1 (highest voltage), power supply 2 (second highest voltage) ... power supply N+2 (lowest voltage) according to the voltage from high to low. The main power supply unit is a high-voltage DC-DC (49V) and a ground power supply (50V), and the backup power supply unit is N sets of 48V-50V low-voltage batteries.

[0024] Then, the voltage difference between the output voltage of the main power supply unit and the highest output voltage of the N low-voltage battery packs in the backup power supply unit is calculated by the built-in calculation unit of the dynamic threshold ideal diode module, thereby obtaining the voltage difference between the main power supply unit and the backup power supply unit; subsequently, the power supply right will be decided based on the voltage difference between the main power supply unit and the backup power supply unit.

[0025] S102: The dynamic threshold ideal diode module performs power supply authority adjudication based on the voltage difference between the main power supply unit and the backup power supply unit, and obtains the power supply authority of at least one power supply unit among the multi-source power supply units. In a specific implementation of this invention, the dynamic threshold ideal diode module performs power supply authority adjudication processing based on the voltage difference between the main power supply unit and the backup power supply unit to obtain the power supply authority of at least one power supply unit among the multi-source power supply units. This includes: the dynamic threshold ideal diode module comparing the voltage difference with a dynamic voltage adjudication threshold; when the voltage difference is greater than the dynamic voltage adjudication threshold, the dynamic threshold ideal diode module adjudicates that the main power supply unit obtains the power supply authority, and the dynamic threshold ideal diode module controls the MOSFET on the backup power supply unit side to turn off, so that the backup power supply unit completely stops supplying power, and the dynamic voltage adjudication threshold is 25mV; when the voltage difference is less than or equal to the dynamic voltage adjudication threshold, the dynamic threshold ideal diode module adjudicates that the main power supply unit and the backup power supply unit jointly obtain the power supply authority, and the dynamic threshold ideal diode module controls the MOSFET on the main power supply unit side to remain on and the MOSFET on the backup power supply unit side to remain on, and the main power supply unit and the backup power supply unit distribute the power supply current to the dual distribution bus according to the voltage ratio.

[0026] Furthermore, when the backup power supply unit obtains power supply rights, the dynamic threshold ideal diode module performs step-by-step collaborative power supply decision processing on the N low-voltage battery packs in the backup power supply unit to obtain a collaborative power supply decision for at least one low-voltage battery pack in the backup power supply unit.

[0027] Furthermore, the dynamic threshold ideal diode module performs a step-by-step coordinated power supply decision processing on the N low-voltage battery packs in the backup power supply unit to obtain a coordinated power supply decision for at least one low-voltage battery pack in the backup power supply unit. This includes: the dynamic threshold ideal diode module detects the output voltage of the N low-voltage battery packs in the backup power supply unit to obtain the output voltage corresponding to the N low-voltage battery packs; calculates the voltage difference between the low-voltage battery pack with the highest output voltage and other low-voltage battery packs with different output voltages among the N low-voltage battery packs, and determines the low-voltage battery pack with the highest output voltage. The module determines whether the voltage difference between the battery pack and other low-voltage battery packs with different output voltages is greater than the dynamic voltage decision threshold. If the voltage difference between the highest output voltage low-voltage battery pack and all other low-voltage battery packs with different output voltages is greater than the dynamic voltage decision threshold, the dynamic threshold ideal diode module determines that the low-voltage battery pack with the highest output voltage among the N low-voltage battery packs will be granted power supply rights. If there is a voltage difference between the highest output voltage low-voltage battery pack and other low-voltage battery packs with different output voltages that is less than or equal to the dynamic voltage decision threshold, the dynamic threshold ideal diode module determines that the low-voltage battery pack with a voltage difference less than or equal to the dynamic voltage decision threshold among the N low-voltage battery packs will be granted cooperative power supply rights.

[0028] Furthermore, after the dynamic threshold ideal diode module performs step-by-step collaborative power supply adjudication processing on the N low-voltage battery packs in the backup power supply unit, the process further includes: the dynamic threshold ideal diode module performs real-time voltage detection processing on the low-voltage battery packs in collaborative power supply to obtain the real-time output voltage of the low-voltage battery packs in collaborative power supply; calculates the voltage difference between the real-time output voltage of the low-voltage battery packs in collaborative power supply and the output voltage of other low-voltage battery packs not participating in collaborative power supply, and determines whether the voltage difference between the real-time output voltage of the low-voltage battery packs in collaborative power supply and the output voltage of other low-voltage battery packs not participating in collaborative power supply is less than or equal to the dynamic voltage adjudication threshold; if the voltage difference is less than or equal to the dynamic voltage adjudication threshold, then the low-voltage battery pack with a voltage difference less than or equal to the dynamic voltage adjudication threshold is added to the collaborative power supply, until the voltage difference between the N low-voltage battery packs is less than or equal to the dynamic voltage adjudication threshold, and then the N low-voltage battery packs are adjudicated to perform collaborative power supply.

[0029] Specifically, the state threshold ideal diode module has a built-in dynamic voltage threshold detection circuit of 25mV. Therefore, the dynamic voltage decision threshold in this embodiment is 25mV. This enables real-time detection of the voltage difference between multiple power supply units and allows control of MOSFET turn-off / turn-on within 0.5μs, providing hardware support for the integrated implementation of decision-making and switching.

[0030] Then, the power supply right of the primary and backup power supply units is determined. The dynamic threshold ideal diode module compares the voltage difference with the dynamic voltage determination threshold. If the voltage difference between the primary power supply unit (high-voltage DC-DC power supply unit and / or ground power supply unit) and the highest voltage difference between the backup power supply unit and the primary power supply unit is greater than the dynamic voltage determination threshold (25mV), the primary power supply unit is granted power supply right, the backup power supply unit is deprived of its power supply right, the dynamic threshold ideal diode module controls the low-voltage battery side MOSFET to turn off, and the low-voltage battery completely stops supplying power. When the voltage difference is less than or equal to the dynamic voltage determination threshold, the dynamic threshold ideal diode module determines that both the primary and backup power supply units jointly receive power supply right. The dynamic threshold ideal diode module determines whether the MOSFETs on the main power supply unit side and the backup power supply unit side remain on. The main power supply unit and the backup power supply unit distribute the power supply current to the dual power distribution bus according to the voltage ratio. It should be noted that the time during which the backup power supply unit and the main power supply unit jointly obtain the right to supply power is generally short. After the backup power supply unit has been outputting for a period of time, as the power of the N low-voltage battery packs in the backup power supply unit decreases, its output voltage will continue to drop. When the voltage difference between the main power supply unit and the backup power supply unit exceeds the dynamic voltage determination threshold, the backup power supply unit will be immediately deprived of the right to jointly supply power, and only the main power supply unit will obtain the right to supply power.

[0031] In another scenario, when the main power supply unit fails / is not in operation and only the backup power supply unit has the right to supply power, the N low-voltage battery groups within the backup power supply unit will participate in the power supply right determination: if the voltage difference between all N low-voltage battery groups in the backup power supply unit is greater than the dynamic voltage determination threshold (25mV), then the low-voltage battery group with the highest voltage among the N low-voltage battery groups is determined to have the sole right to supply power, and the power supply right of the other low-voltage battery groups is deprived; when the voltage of the highest voltage low-voltage battery group decreases with the supply of power, and the voltage difference with the second highest voltage low-voltage battery group is ≤25mV, then the two low-voltage battery groups are determined to jointly have the right to supply power, and they supply power simultaneously; and so on, when the voltage of the current k low-voltage battery groups decreases together, and the voltage difference with the (k+1)th low-voltage battery group is ≤25mV, then the (k+1)th low-voltage battery group is determined to join the power supply, until N The voltage difference between the low-voltage battery packs is ≤25mV, and all low-voltage battery packs are jointly granted power supply rights to achieve synchronous and coordinated power supply. Current distribution when multiple power supply units supply power simultaneously: When the voltage difference between any multiple power supply units is ≤25mV and they jointly grant power supply rights, the dynamic threshold ideal diode module controls the corresponding MOSFET to remain on, and the multiple power supply units distribute the power supply current to the bus according to the voltage ratio to achieve balanced current distribution.

[0032] S103: The dynamic threshold ideal diode module performs seamless power supply switching to the dual distribution bus according to the power supply authority of at least one power supply unit in the multi-source power supply unit.

[0033] In a specific implementation of the present invention, the dynamic threshold ideal diode module performs a seamless power supply switching process to the dual power distribution bus according to the power supply authority of at least one power supply unit in the multi-source power supply unit, including: the dynamic threshold ideal diode module performs a seamless power supply switching process to the dual power distribution bus by using MOSFET turn-off and turn-on operations according to the power supply authority of at least one power supply unit in the multi-source power supply unit.

[0034] Specifically, after obtaining the ruling, the 0.5μs-level MOSFET response speed of the dynamic threshold ideal diode module is used to achieve seamless switching from the main power supply to the backup power supply. The switching logic applies to each group of buses of the dual power distribution bus, and the two buses independently execute the same switching logic.

[0035] Normal power supply status monitoring: When the multi-source redundant power supply intelligent switching system is working normally, the dynamic threshold ideal diode module detects the output voltage of the main power supply unit (high voltage DC-DC / ground power supply) in real time, continuously executes the power supply right decision of the main / backup power supply unit, the main power supply unit maintains the power supply right, and the MOSFET on the backup power supply unit side is in the off state.

[0036] Main power supply unit fault identification: When the output voltage of the main power supply unit drops sharply due to open circuit, fault or other reasons, and the voltage difference between the main power supply unit and the backup power supply unit is greater than 25mV, the detection circuit identifies the fault within 0.5μs and triggers a re-determination of power supply rights.

[0037] Rapid transfer of power supply: After the power supply is re-determined, the low-voltage battery pack with the highest voltage of the backup power supply unit is given the power supply. The dynamic threshold ideal diode module controls the MOSFET on the main power supply unit side to turn off and the MOSFET on the backup power supply unit side to turn on within 0.5μs.

[0038] Seamless power supply switchover: After the MOSFET on the backup power supply unit is turned on, the backup power supply unit immediately supplies power to the dual power distribution buses. The response time of the entire switching process is ≤0.5μs, and the power supply to the airborne electronic equipment is uninterrupted, achieving seamless power switching.

[0039] By implementing integrated control of power supply decision-making and switching, the power supply decision-making and power switching are integrated through the hardware detection circuit of the dynamic threshold ideal diode module. The detection circuit collects the voltage difference in real time (decision input) and directly drives the MOSFET to turn off / on (switching output). There is no intermediate signal transmission link. The decision result and the switching action are realized synchronously, completely eliminating signal transmission delay and realizing integrated control of "decision-switching".

[0040] In the specific implementation of this invention, the power supply decision is executed by the dynamic threshold ideal diode module with a dynamic voltage decision threshold, which can accurately allocate the power supply rights of multiple power supply units, completely avoid backflow from low potential power supply units and uneven current distribution among multiple power supply units, and greatly improve the accuracy of power supply decision. Within the low-voltage battery pack, a step-by-step collaborative decision is implemented to achieve voltage balance, solving the technical pain point of voltage imbalance within the low-voltage battery pack and extending the battery pack's cycle life. When the main power supply unit is supplying power, the decision is made that the backup power supply unit completely loses its power supply rights. The ideal diode module turns off the MOSFET on the backup power supply unit side, and the backup power supply unit consumes no power, ensuring the emergency backup capability of the backup power supply unit and meeting the backup requirements of eVTOL.

[0041] Example 2, please refer to Figure 2 , Figure 2 This is a schematic diagram of the structure of the eVTOL multi-source power supply right adjudication and seamless switching device in an embodiment of the present invention.

[0042] like Figure 2 As shown, an eVTOL multi-source power supply right decision and seamless switching device is applied to the multi-source redundant power supply intelligent switching system of the eVTOL low-voltage distribution box. The multi-source redundant power supply intelligent switching system includes a dynamic threshold ideal diode module, a multi-source power supply unit, and dual distribution buses; the device includes: Voltage difference calculation module: After the multi-source redundant power supply intelligent switching system is powered on, the dynamic threshold ideal diode module detects the output voltage of the main power supply unit and the backup power supply unit in the multi-source power supply unit in real time, and calculates the voltage difference between the output voltage of the main power supply unit and the highest output voltage of the N low-voltage battery packs in the backup power supply unit, so as to obtain the voltage difference between the main power supply unit and the backup power supply unit. In the specific implementation of this invention, the main power supply unit is composed of a high-voltage DC-DC power supply unit and / or a ground power supply unit; the backup power supply unit is a low-voltage battery system, which is composed of N low-voltage battery packs.

[0043] Specifically, this embodiment should be a multi-source redundant power supply intelligent switching system for eVTOL low-voltage distribution boxes. The multi-source redundant power supply intelligent switching system includes a dynamic threshold ideal diode module, a multi-source power supply unit, and dual power distribution buses. The multi-source power supply unit consists of a main power supply unit and a backup power supply unit. The main power supply unit consists of a high-voltage DC-DC power supply unit and / or a ground power supply unit. The backup power supply unit is a low-voltage battery system, consisting of N low-voltage battery packs. Under normal circumstances, the output voltage of the ground power supply unit in the main power supply unit is a stable 50V, the output voltage of the high-voltage DC-DC power supply unit is a stable 49V, and the output voltage of the N low-voltage battery packs in the backup power supply unit is between 48V and 50V. When the low-voltage battery packs are fully charged, the output voltage can reach 50V. After the low-voltage battery packs have been working continuously for a period of time, their output voltage decreases as the battery capacity decreases.

[0044] After the multi-source redundant power supply intelligent switching system is powered on, that is, after the eVTOL low-voltage distribution box is powered on, the detection circuit in the dynamic threshold ideal diode module detects and collects the output voltage of the multi-source power supply unit in real time. Then, the voltage values ​​are sorted from high to low, and the multi-source power supply units are marked as power supply 1 (highest voltage), power supply 2 (second highest voltage) ... power supply N+2 (lowest voltage) according to the voltage from high to low. The main power supply unit is a high-voltage DC-DC (49V) and a ground power supply (50V), and the backup power supply unit is N sets of 48V-50V low-voltage batteries.

[0045] Then, the voltage difference between the output voltage of the main power supply unit and the highest output voltage of the N low-voltage battery packs in the backup power supply unit is calculated by the built-in calculation unit of the dynamic threshold ideal diode module, thereby obtaining the voltage difference between the main power supply unit and the backup power supply unit; subsequently, the power supply right will be decided based on the voltage difference between the main power supply unit and the backup power supply unit.

[0046] Decision module 202: Used by the dynamic threshold ideal diode module to make decision-making processing on the power supply authority based on the voltage difference between the main power supply unit and the backup power supply unit, so as to obtain the power supply authority of at least one power supply unit among the multi-source power supply units; In a specific implementation of this invention, the dynamic threshold ideal diode module performs power supply authority adjudication processing based on the voltage difference between the main power supply unit and the backup power supply unit to obtain the power supply authority of at least one power supply unit among the multi-source power supply units. This includes: the dynamic threshold ideal diode module comparing the voltage difference with a dynamic voltage adjudication threshold; when the voltage difference is greater than the dynamic voltage adjudication threshold, the dynamic threshold ideal diode module adjudicates that the main power supply unit obtains the power supply authority, and the dynamic threshold ideal diode module controls the MOSFET on the backup power supply unit side to turn off, so that the backup power supply unit completely stops supplying power, and the dynamic voltage adjudication threshold is 25mV; when the voltage difference is less than or equal to the dynamic voltage adjudication threshold, the dynamic threshold ideal diode module adjudicates that the main power supply unit and the backup power supply unit jointly obtain the power supply authority, and the dynamic threshold ideal diode module controls the MOSFET on the main power supply unit side to remain on and the MOSFET on the backup power supply unit side to remain on, and the main power supply unit and the backup power supply unit distribute the power supply current to the dual distribution bus according to the voltage ratio.

[0047] Furthermore, when the backup power supply unit obtains power supply rights, the dynamic threshold ideal diode module performs step-by-step collaborative power supply decision processing on the N low-voltage battery packs in the backup power supply unit to obtain a collaborative power supply decision for at least one low-voltage battery pack in the backup power supply unit.

[0048] Furthermore, the dynamic threshold ideal diode module performs a step-by-step coordinated power supply decision processing on the N low-voltage battery packs in the backup power supply unit to obtain a coordinated power supply decision for at least one low-voltage battery pack in the backup power supply unit. This includes: the dynamic threshold ideal diode module detects the output voltage of the N low-voltage battery packs in the backup power supply unit to obtain the output voltage corresponding to the N low-voltage battery packs; calculates the voltage difference between the low-voltage battery pack with the highest output voltage and other low-voltage battery packs with different output voltages among the N low-voltage battery packs, and determines the low-voltage battery pack with the highest output voltage. The module determines whether the voltage difference between the battery pack and other low-voltage battery packs with different output voltages is greater than the dynamic voltage decision threshold. If the voltage difference between the highest output voltage low-voltage battery pack and all other low-voltage battery packs with different output voltages is greater than the dynamic voltage decision threshold, the dynamic threshold ideal diode module determines that the low-voltage battery pack with the highest output voltage among the N low-voltage battery packs will be granted power supply rights. If there is a voltage difference between the highest output voltage low-voltage battery pack and other low-voltage battery packs with different output voltages that is less than or equal to the dynamic voltage decision threshold, the dynamic threshold ideal diode module determines that the low-voltage battery pack with a voltage difference less than or equal to the dynamic voltage decision threshold among the N low-voltage battery packs will be granted cooperative power supply rights.

[0049] Furthermore, after the dynamic threshold ideal diode module performs step-by-step collaborative power supply adjudication processing on the N low-voltage battery packs in the backup power supply unit, the process further includes: the dynamic threshold ideal diode module performs real-time voltage detection processing on the low-voltage battery packs in collaborative power supply to obtain the real-time output voltage of the low-voltage battery packs in collaborative power supply; calculates the voltage difference between the real-time output voltage of the low-voltage battery packs in collaborative power supply and the output voltage of other low-voltage battery packs not participating in collaborative power supply, and determines whether the voltage difference between the real-time output voltage of the low-voltage battery packs in collaborative power supply and the output voltage of other low-voltage battery packs not participating in collaborative power supply is less than or equal to the dynamic voltage adjudication threshold; if the voltage difference is less than or equal to the dynamic voltage adjudication threshold, then the low-voltage battery pack with a voltage difference less than or equal to the dynamic voltage adjudication threshold is added to the collaborative power supply, until the voltage difference between the N low-voltage battery packs is less than or equal to the dynamic voltage adjudication threshold, and then the N low-voltage battery packs are adjudicated to perform collaborative power supply.

[0050] Specifically, the state threshold ideal diode module has a built-in dynamic voltage threshold detection circuit of 25mV. Therefore, the dynamic voltage decision threshold in this embodiment is 25mV. This enables real-time detection of the voltage difference between multiple power supply units and allows control of MOSFET turn-off / turn-on within 0.5μs, providing hardware support for the integrated implementation of decision-making and switching.

[0051] Then, the power supply right of the primary and backup power supply units is determined. The dynamic threshold ideal diode module compares the voltage difference with the dynamic voltage determination threshold. If the voltage difference between the primary power supply unit (high-voltage DC-DC power supply unit and / or ground power supply unit) and the highest voltage difference between the backup power supply unit and the primary power supply unit is greater than the dynamic voltage determination threshold (25mV), the primary power supply unit is granted power supply right, the backup power supply unit is deprived of its power supply right, the dynamic threshold ideal diode module controls the low-voltage battery side MOSFET to turn off, and the low-voltage battery completely stops supplying power. When the voltage difference is less than or equal to the dynamic voltage determination threshold, the dynamic threshold ideal diode module determines that both the primary and backup power supply units jointly receive power supply right. The dynamic threshold ideal diode module determines whether the MOSFETs on the main power supply unit side and the backup power supply unit side remain on. The main power supply unit and the backup power supply unit distribute the power supply current to the dual power distribution bus according to the voltage ratio. It should be noted that the time during which the backup power supply unit and the main power supply unit jointly obtain the right to supply power is generally short. After the backup power supply unit has been outputting for a period of time, as the power of the N low-voltage battery packs in the backup power supply unit decreases, its output voltage will continue to drop. When the voltage difference between the main power supply unit and the backup power supply unit exceeds the dynamic voltage determination threshold, the backup power supply unit will be immediately deprived of the right to jointly supply power, and only the main power supply unit will obtain the right to supply power.

[0052] In another scenario, when the main power supply unit fails / is not in operation and only the backup power supply unit has the right to supply power, the N low-voltage battery groups within the backup power supply unit will participate in the power supply right determination: if the voltage difference between all N low-voltage battery groups in the backup power supply unit is greater than the dynamic voltage determination threshold (25mV), then the low-voltage battery group with the highest voltage among the N low-voltage battery groups is determined to have the sole right to supply power, and the power supply right of the other low-voltage battery groups is deprived; when the voltage of the highest voltage low-voltage battery group decreases with the supply of power, and the voltage difference with the second highest voltage low-voltage battery group is ≤25mV, then the two low-voltage battery groups are determined to jointly have the right to supply power, and they supply power simultaneously; and so on, when the voltage of the current k low-voltage battery groups decreases together, and the voltage difference with the (k+1)th low-voltage battery group is ≤25mV, then the (k+1)th low-voltage battery group is determined to join the power supply, until N The voltage difference between the low-voltage battery packs is ≤25mV, and all low-voltage battery packs are jointly granted power supply rights to achieve synchronous and coordinated power supply. Current distribution when multiple power supply units supply power simultaneously: When the voltage difference between any multiple power supply units is ≤25mV and they jointly grant power supply rights, the dynamic threshold ideal diode module controls the corresponding MOSFET to remain on, and the multiple power supply units distribute the power supply current to the bus according to the voltage ratio to achieve balanced current distribution.

[0053] Seamless switching module 203: Used by the dynamic threshold ideal diode module to perform seamless switching of power supply to the dual distribution bus according to the power supply authority of at least one power supply unit in the multi-source power supply unit.

[0054] In a specific implementation of the present invention, the dynamic threshold ideal diode module performs a seamless power supply switching process to the dual power distribution bus according to the power supply authority of at least one power supply unit in the multi-source power supply unit, including: the dynamic threshold ideal diode module performs a seamless power supply switching process to the dual power distribution bus by using MOSFET turn-off and turn-on operations according to the power supply authority of at least one power supply unit in the multi-source power supply unit.

[0055] Specifically, after obtaining the ruling, the 0.5μs-level MOSFET response speed of the dynamic threshold ideal diode module is used to achieve seamless switching from the main power supply to the backup power supply. The switching logic applies to each group of buses of the dual power distribution bus, and the two buses independently execute the same switching logic.

[0056] Normal power supply status monitoring: When the multi-source redundant power supply intelligent switching system is working normally, the dynamic threshold ideal diode module detects the output voltage of the main power supply unit (high voltage DC-DC / ground power supply) in real time, continuously executes the power supply right decision of the main / backup power supply unit, the main power supply unit maintains the power supply right, and the MOSFET on the backup power supply unit side is in the off state.

[0057] Main power supply unit fault identification: When the output voltage of the main power supply unit drops sharply due to open circuit, fault or other reasons, and the voltage difference between the main power supply unit and the backup power supply unit is greater than 25mV, the detection circuit identifies the fault within 0.5μs and triggers a re-determination of power supply rights.

[0058] Rapid transfer of power supply: After the power supply is re-determined, the low-voltage battery pack with the highest voltage of the backup power supply unit is given the power supply. The dynamic threshold ideal diode module controls the MOSFET on the main power supply unit side to turn off and the MOSFET on the backup power supply unit side to turn on within 0.5μs.

[0059] Seamless power supply switchover: After the MOSFET on the backup power supply unit is turned on, the backup power supply unit immediately supplies power to the dual power distribution buses. The response time of the entire switching process is ≤0.5μs, and the power supply to the airborne electronic equipment is uninterrupted, achieving seamless power switching.

[0060] By implementing integrated control of power supply decision-making and switching, the power supply decision-making and power switching are integrated through the hardware detection circuit of the dynamic threshold ideal diode module. The detection circuit collects the voltage difference in real time (decision input) and directly drives the MOSFET to turn off / on (switching output). There is no intermediate signal transmission link. The decision result and the switching action are realized synchronously, completely eliminating signal transmission delay and realizing integrated control of "decision-switching".

[0061] In the specific implementation of this invention, the power supply decision is executed by the dynamic threshold ideal diode module with a dynamic voltage decision threshold, which can accurately allocate the power supply rights of multiple power supply units, completely avoid backflow from low potential power supply units and uneven current distribution among multiple power supply units, and greatly improve the accuracy of power supply decision. Within the low-voltage battery pack, a step-by-step collaborative decision is implemented to achieve voltage balance, solving the technical pain point of voltage imbalance within the low-voltage battery pack and extending the battery pack's cycle life. When the main power supply unit is supplying power, the decision is made that the backup power supply unit completely loses its power supply rights. The ideal diode module turns off the MOSFET on the backup power supply unit side, and the backup power supply unit consumes no power, ensuring the emergency backup capability of the backup power supply unit and meeting the backup requirements of eVTOL.

[0062] This invention provides a computer-readable storage medium storing a computer program. When executed by a processor, this program implements the multi-source power supply decision-making and seamless switching method of any of the above embodiments. The computer-readable storage medium includes, but is not limited to, any type of disk (including floppy disk, hard disk, optical disk, CD-ROM, and magneto-optical disk), ROM (Read-Only Memory), RAM (Random Access Memory), EPROM (Erasable Programmable Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash memory, magnetic cards, or optical cards. In other words, the storage device includes any medium that stores or transmits information in a readable form by a device (e.g., a computer, a mobile phone), and can be a read-only memory, a disk, or an optical disk, etc.

[0063] This invention also provides a computer application running on a computer, which is used to execute the multi-source power supply right decision and seamless switching method of any of the above embodiments.

[0064] also, Figure 3 This is a schematic diagram of the structural composition of the electronic device in an embodiment of the present invention.

[0065] This invention also provides an electronic device, such as... Figure 3 As shown. The electronic device includes a processor 302, a memory 303, an input unit 304, and a display unit 305, among other devices. Those skilled in the art will understand that... Figure 3 The structural components of the illustrated electronic device do not constitute a limitation on all devices and may include more or fewer components than illustrated, or combine certain components. Memory 303 can be used to store application program 301 and various functional modules. Processor 302 runs application program 301 stored in memory 303, thereby performing various functional applications and data processing of the device. Memory can be internal memory or external memory, or both. Internal memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), flash memory, or random access memory. External memory may include hard disks, floppy disks, ZIP disks, USB flash drives, magnetic tapes, etc. The memory disclosed in this invention includes, but is not limited to, these types of memory. The memory disclosed in this invention is only an example and not a limitation.

[0066] Input unit 304 is used to receive signal input and user-input keywords. Input unit 304 may include a touch panel and other input devices. The touch panel can collect user touch operations on or near it (such as operations performed by the user using a finger, stylus, or any suitable object or accessory on or near the touch panel) and drive the corresponding connection device according to a pre-set program; other input devices may include, but are not limited to, one or more of physical keyboards, function keys (such as play control buttons, power buttons, etc.), trackballs, mice, joysticks, etc. Display unit 305 can be used to display user-input information or information provided to the user, as well as various menus of the terminal device. Display unit 305 may be in the form of a liquid crystal display, organic light-emitting diode, etc. Processor 302 is the control center of the terminal device, connecting various parts of the entire device through various interfaces and lines, and performing various functions and processing data by running or executing software programs and / or modules stored in memory 303, and calling data stored in memory.

[0067] As one embodiment, the electronic device includes: one or more processors 302, a memory 303, and one or more application programs 301, wherein the one or more application programs 301 are stored in the memory 303 and configured to be executed by the one or more processors 302, and the one or more application programs 301 are configured to execute the multi-source power supply right decision and seamless switching method corresponding to any of the above embodiments.

[0068] In the specific implementation of this invention, the power supply decision is executed by the dynamic threshold ideal diode module with a dynamic voltage decision threshold, which can accurately allocate the power supply rights of multiple power supply units, completely avoid backflow from low potential power supply units and uneven current distribution among multiple power supply units, and greatly improve the accuracy of power supply decision. Within the low-voltage battery pack, a step-by-step collaborative decision is implemented to achieve voltage balance, solving the technical pain point of voltage imbalance within the low-voltage battery pack and extending the battery pack's cycle life. When the main power supply unit is supplying power, the decision is made that the backup power supply unit completely loses its power supply rights. The ideal diode module turns off the MOSFET on the backup power supply unit side, and the backup power supply unit consumes no power, ensuring the emergency backup capability of the backup power supply unit and meeting the backup requirements of eVTOL.

[0069] Furthermore, the above provides a detailed description of the eVTOL multi-source power supply right adjudication and seamless switching method and related apparatus provided by the embodiments of the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A method for multi-source power supply decision-making and seamless switching in eVTOL, characterized in that, A multi-source redundant power supply intelligent switching system applied to eVTOL low-voltage distribution boxes, the multi-source redundant power supply intelligent switching system including a dynamic threshold ideal diode module, a multi-source power supply unit, and dual distribution buses; the method includes: After the multi-source redundant power supply intelligent switching system is powered on, the dynamic threshold ideal diode module detects the output voltage of the main power supply unit and the backup power supply unit in the multi-source power supply unit in real time, and calculates the voltage difference between the output voltage of the main power supply unit and the highest output voltage of the N low-voltage battery packs in the backup power supply unit to obtain the voltage difference between the main power supply unit and the backup power supply unit. The dynamic threshold ideal diode module performs power supply authority adjudication based on the voltage difference between the main power supply unit and the backup power supply unit, thereby obtaining the power supply authority of at least one power supply unit among the multi-source power supply units. The dynamic threshold ideal diode module performs seamless power supply switching to the dual distribution bus according to the power supply authority of at least one of the multi-source power supply units.

2. The method for multi-source power supply right determination and seamless switching according to claim 1, characterized in that, The main power supply unit consists of a high-voltage DC-DC power supply unit and / or a ground power supply unit; the backup power supply unit is a low-voltage battery system, which consists of N low-voltage battery packs.

3. The method for multi-source power supply right determination and seamless switching according to claim 1, characterized in that, The dynamic threshold ideal diode module performs power supply authority determination based on the voltage difference between the main power supply unit and the backup power supply unit, obtaining the power supply authority of at least one power supply unit among the multi-source power supply units, including: The dynamic threshold ideal diode module compares the voltage difference with the dynamic voltage decision threshold. When the voltage difference is greater than the dynamic voltage decision threshold, the dynamic threshold ideal diode module decides that the main power supply unit has the right to supply power, and the dynamic threshold ideal diode module controls the MOSFET on the backup power supply unit side to turn off so that the backup power supply unit completely stops supplying power. The dynamic voltage decision threshold is 25mV. When the voltage difference is less than or equal to the dynamic voltage decision threshold, the dynamic threshold ideal diode module decides that the main power supply unit and the backup power supply unit jointly obtain the power supply right. The dynamic threshold ideal diode module decides to control the MOSFET on the main power supply unit side to remain on and the MOSFET on the backup power supply unit side to remain on. The main power supply unit and the backup power supply unit distribute the power supply current to the dual distribution bus according to the voltage ratio.

4. The method for multi-source power supply right determination and seamless switching according to claim 1, characterized in that, When the backup power supply unit obtains power supply rights, the dynamic threshold ideal diode module performs step-by-step collaborative power supply decision processing on the N low-voltage battery packs in the backup power supply unit to obtain a collaborative power supply decision for at least one low-voltage battery pack in the backup power supply unit.

5. The method for multi-source power supply right determination and seamless switching according to claim 4, characterized in that, The dynamic threshold ideal diode module performs step-by-step coordinated power supply decision processing on the N groups of low-voltage battery packs in the backup power supply unit, and obtains the coordinated power supply decision for at least one group of low-voltage battery packs in the backup power supply unit, including: The dynamic threshold ideal diode module detects and processes the output voltage of the N low-voltage battery packs in the backup power supply unit to obtain the output voltage corresponding to the N low-voltage battery packs. Calculate the voltage difference between the low-voltage battery pack with the highest output voltage and other low-voltage battery packs with the same output voltage in the N low-voltage battery packs, obtain the voltage difference between the low-voltage battery pack with the highest output voltage and other low-voltage battery packs with the same output voltage, and determine whether the voltage difference between the low-voltage battery pack with the highest output voltage and other low-voltage battery packs with the same output voltage is greater than the dynamic voltage decision threshold. If the voltage difference between the low-voltage battery pack with the highest output voltage and the low-voltage battery pack with the other output voltages is greater than the dynamic voltage decision threshold, the dynamic threshold ideal diode module decides that the low-voltage battery pack with the highest output voltage among the N low-voltage battery packs shall be granted the right to supply power. If the voltage difference between the low-voltage battery pack with the highest output voltage and other low-voltage battery packs with different output voltages is less than or equal to the dynamic voltage decision threshold, the dynamic threshold ideal diode module decides that the low-voltage battery pack with a voltage difference less than or equal to the dynamic voltage decision threshold among the N low-voltage battery packs shall obtain the right to cooperate in power supply.

6. The method for multi-source power supply right adjudication and seamless switching according to claim 4, characterized in that, After the dynamic threshold ideal diode module performs step-by-step coordinated power supply adjudication processing on the N low-voltage battery packs in the backup power supply unit, it also includes: The dynamic threshold ideal diode module performs real-time voltage detection processing on the low-voltage battery pack that is powered by the cooperative power supply to obtain the real-time output voltage of the low-voltage battery pack that is powered by the cooperative power supply. Calculate the voltage difference between the real-time output voltage of the low-voltage battery pack that is co-powered and the output voltage of other low-voltage battery packs that are not co-powered, and determine whether the voltage difference between the real-time output voltage of the low-voltage battery pack that is co-powered and the output voltage of other low-voltage battery packs that are not co-powered is less than or equal to the dynamic voltage decision threshold. If the voltage difference is less than or equal to the dynamic voltage decision threshold, the decision will add the low-voltage battery pack with the voltage difference less than or equal to the dynamic voltage decision threshold to the collaborative power supply until the voltage difference between the N low-voltage battery packs is less than or equal to the dynamic voltage decision threshold, and then the decision will be made to enable the N low-voltage battery packs to perform collaborative power supply.

7. The method for multi-source power supply right adjudication and seamless switching according to claim 1, characterized in that, The dynamic threshold ideal diode module performs seamless power supply switching to the dual distribution bus based on the power supply authority of at least one of the multi-source power supply units, including: The dynamic threshold ideal diode module performs seamless power supply switching to the dual distribution bus by using MOSFET turn-off and turn-on operations according to the power supply authority of at least one of the multi-source power supply units.

8. A multi-source power supply decision-making and seamless switching device for eVTOL, characterized in that, A multi-source redundant power supply intelligent switching system for eVTOL, comprising a dynamic threshold ideal diode module, a multi-source power supply unit, and dual power distribution buses; the device includes: Voltage difference calculation module: After the multi-source redundant power supply intelligent switching system is powered on, the dynamic threshold ideal diode module detects the output voltage of the main power supply unit and the backup power supply unit in the multi-source power supply unit in real time, and calculates the voltage difference between the output voltage of the main power supply unit and the highest output voltage of the N low-voltage battery packs in the backup power supply unit, so as to obtain the voltage difference between the main power supply unit and the backup power supply unit. Decision module: Used by the dynamic threshold ideal diode module to make decision-making on power supply authority based on the voltage difference between the main power supply unit and the backup power supply unit, so as to obtain the power supply authority of at least one power supply unit among the multi-source power supply units; Seamless switching module: used by the dynamic threshold ideal diode module to perform seamless switching of power supply to the dual distribution bus according to the power supply authority of at least one of the multi-source power supply units.

9. An electronic device comprising a processor and a memory, characterized in that, The processor runs a computer program or code stored in the memory to implement the multi-source power supply right decision and seamless switching method as described in any one of claims 1 to 7.

10. A computer-readable storage medium for storing computer programs or code, characterized in that, When the computer program or code is executed by a processor, the method for deciding and seamlessly switching power supply rights from multiple sources as described in any one of claims 1 to 7 is implemented.

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