Redundant power supply system and unmanned aerial vehicle comprising same

Abstract

The utility model relates to the technical field of power supply systems, in particular to a redundant power supply system and an unmanned aerial vehicle comprising the same. The redundant power supply system comprises a power supply module, a power distribution module and electric equipment, the power supply module comprises a main power supply module and a standby power supply module, the main power supply module is provided with a channel A and a channel B, a bus bar A and a bus bar B are arranged in the power distribution module, and the electric equipment comprises complete machine important equipment and load equipment. A channel A of the main power supply module and the standby power supply module are communicated with the bus bar A, the bus bar A is connected with the complete machine important equipment, a channel B is communicated with the bus bar B, and the bus bar B is connected with the load equipment; and when the transmission of the main power supply module fails, the power distribution module receives the power supply of the standby power supply module through the A-path bus bar. The reliability of the power supply system is greatly improved through the redundant power supply system.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply systems, and in particular to a redundant power supply system and a drone containing the same. Background Art

[0002] With the development of my country's aviation industry in recent years, drone technology has also made rapid progress. Depending on the needs of different application fields, the flight time and take-off weight of drones vary greatly.

[0003] For large cargo drones, long flight time and high take-off weight are essential, which is a challenge to the power supply of the whole machine. Most of the current drones use a power battery or a fuel generator as the power source, or a fuel generator plus an emergency battery as the power supply of the whole machine. However, no matter which method is used, it is relatively simple. This single-channel power supply method is relatively simple in design and easy to control, but it has a low safety factor and poor stability. Once the power supply fails, it will cause uncontrollable consequences.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the utility model, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to ordinary technicians in this field. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a redundant power supply system and a UAV containing the same, so as to solve the problems of simple power supply design, low safety factor and poor stability existing in the related art.

[0006] In order to solve the above technical problems, the utility model is implemented by adopting the following technical solutions:

[0007] On the one hand, the utility model provides a redundant power supply system, including a power supply module, a power distribution module and power-consuming equipment, the power supply module including a main power supply module and a backup power supply module, the main power supply module having an A channel and a B channel, the power distribution module having an A bus bar and a B bus bar inside, the power-consuming equipment including important equipment of the whole machine and load equipment, the A channel of the main power supply module and the backup power supply module are connected to the A bus bar, the A bus bar is connected to the important equipment of the whole machine, the B channel of the main power supply module is connected to the B bus bar, and the B bus bar is connected to the load equipment;

[0008] Among them, the transmission priority of the main power supply module is greater than the transmission priority of the backup power supply module. When the main power supply module fails in transmission, the power distribution module receives power from the backup power supply module through the A-road bus.

[0009] Furthermore, a first unidirectional control switch is provided between the B channel of the main power supply module and the A channel of the main power supply module, and when the A channel fails in transmission, the B channel automatically switches to the A channel.

[0010] Furthermore, a first current acquisition module and a second current acquisition module are provided inside the main power supply module. The first current acquisition module is used to detect the current in the A channel, and the second current acquisition module is used to detect the current in the B channel.

[0011] Furthermore, a second unidirectional control switch is provided between the B busbar of the power distribution module and the A busbar, and when the A busbar has a transmission failure, the B busbar automatically switches to the A busbar.

[0012] Furthermore, the power distribution module has a first voltage acquisition module and a second voltage acquisition module inside, the first voltage acquisition module is used to detect the voltage in the A-way bus bar, and the second voltage acquisition module is used to detect the voltage in the B-way bus bar.

[0013] Furthermore, the main power supply module includes an AC generator and a rectifier unit, the AC generator has a channel A and a channel B, the channel A and the channel B of the AC generator are respectively connected to the rectifier unit, the rectifier unit has a channel A and a channel B, the channel A of the rectifier unit is connected to the A bus of the distribution module, and the channel B of the rectifier unit is connected to the B bus of the distribution module.

[0014] Furthermore, the backup power supply module includes a first lithium battery and a second lithium battery, and the first lithium battery and the second lithium battery are respectively connected to the A-line bus bar of the power distribution module.

[0015] On the other hand, the utility model provides a drone, comprising the above-mentioned redundant power supply system,

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model adopts a dual-channel generator for power generation. When channel A fails, channel B can be automatically switched to channel A for backup through the rectifier unit. When both channel A and channel B fail, two emergency lithium batteries can be switched for power supply, which greatly improves the reliability of the power supply of the whole machine. At the same time, the power distribution module can realize automatic backup of bus B to bus A, without manual monitoring and automatic switching throughout the process. The utility model can achieve power supply redundancy backup design while reducing the weight of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a redundant power supply system provided by an embodiment of the utility model;

[0019] Figure 2 It is a structural schematic diagram of a redundant power supply system provided by an embodiment of the utility model;

[0020] Figure 3 It is a structural schematic diagram of a redundant power supply system provided by an embodiment of the utility model;

[0021] Figure 4 It is a structural schematic diagram of a redundant power supply system provided by an embodiment of the utility model;

[0022] In the figure: 1: power supply module; 2: power distribution module; 3: power-consuming equipment; 4: main power supply module; 5: backup power supply module; 6: A-line busbar; 7: B-line busbar; 8: important equipment of the whole machine; 9: load equipment; 10: first one-way control switch; 11: first current acquisition module; 12: second current acquisition module; 13: second one-way control switch; 14: first voltage acquisition module; 15: second voltage acquisition module; 16: AC generator; 17: rectifier unit; 18: first lithium battery; 19: second lithium battery. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

[0024] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0025] Embodiment 1:

[0026] like Figure 1-4As shown, this embodiment provides a redundant power supply system, including a power supply module 1, a power distribution module 2 and an electrical device 3, the power supply module 1 includes a main power supply module 4 and a backup power supply module 5, the main power supply module 4 includes an AC generator 16 and a rectifier unit 17, the AC generator 16 has an A channel and a B channel, and the A channel and the B channel of the AC generator 16 are respectively connected to the rectifier unit 17.

[0027] Specifically, the two channels of the AC generator 16 generate two AC power supplies, which are rectified, filtered and stepped down inside the rectifying unit 17 to output stable DC power supplies.

[0028] In this embodiment, the rectifier unit 17 has channel A and channel B, the backup power supply module 5 includes a first lithium battery 18 and a second lithium battery 19, the power distribution module 2 has an A bus 6 and a B bus 7 inside, and the electrical equipment 3 includes important equipment 8 of the whole machine and load equipment 9.

[0029] The A channel of the rectifier unit 17, the first lithium battery 18 and the second lithium battery 19 are respectively connected to the A bus 6 of the distribution module 2, and the A bus 6 is connected to the important equipment 8 of the whole machine; the B channel of the rectifier unit 17 is connected to the B bus 7 of the distribution module 2, the B channel is connected to the B bus 7, and the B bus 7 is connected to the load equipment 9.

[0030] In this embodiment, a first unidirectional control switch 10 is provided between the B channel of the main power supply module 4 and the A channel of the main power supply module 4. When the A channel fails in transmission, the B channel automatically switches to the A channel.

[0031] In this embodiment, a first current acquisition module 11 and a second current acquisition module 12 are provided inside the main power supply module 4. The first current acquisition module 11 is used to detect the current in the A channel, and the second current acquisition module 12 is used to detect the current in the B channel.

[0032] Specifically, when the first current acquisition module 11 detects that the current on channel A is abnormal, the rectifier unit 17 controls channel B to automatically switch to channel A through the first unidirectional control switch 10 to ensure that channel A works normally.

[0033] In this embodiment, the transmission priority of the main power supply module 4 is greater than the transmission priority of the backup power supply module 5. When the main power supply module 4 fails in transmission, the power distribution module 2 receives power from the backup power supply module 5 through the A bus 6.

[0034] Specifically, when both the A channel and the B channel of the rectifier unit 17 fail, the power distribution module 2 will automatically switch to the first lithium battery 18 or the second lithium battery 19 for power supply. At this time, the first lithium battery 18 and the second lithium battery 19 are used as emergency power supplies. It should also be noted that the backup power supply module 5 will only supply power to the important equipment 8 of the whole machine at this time to reduce power consumption and increase the emergency return time.

[0035] In this embodiment, a second unidirectional control switch 13 is provided between the B bus 7 of the power distribution module 2 and the A bus 6 , and when the A bus 6 has a transmission failure, the B bus 7 automatically switches to the A bus 6 .

[0036] In this embodiment, the power distribution module 2 has a first voltage acquisition module 14 and a second voltage acquisition module 15 inside. The first voltage acquisition module 14 is used to detect the voltage in the A-way bus 6, and the second voltage acquisition module 15 is used to detect the voltage in the B-way bus 7.

[0037] Specifically, when the first voltage acquisition module 14 detects that the voltage on the A bus 6 is abnormal, the distribution module 2 will control the B bus 7 to automatically switch to the A bus 6 through the second unidirectional control switch 13 to ensure uninterrupted power supply to the important equipment 8 of the whole machine, thereby achieving double protection of the channel power supply of the important equipment 8 of the whole machine.

[0038] This embodiment greatly improves the reliability of the power supply system through the design of an electrical system with redundant power supply, thereby adding an additional guarantee for the flight safety of the drone.

[0039] Embodiment 2:

[0040] This embodiment provides a drone, including the redundant power supply system described in Embodiment 1.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

Claims

1. A redundant power supply system, characterized in that: The invention comprises a power supply module (1), a power distribution module (2) and an electric device (3), wherein the power supply module (1) comprises a main power supply module (4) and a backup power supply module (5), wherein the main power supply module (4) has an A channel and a B channel, wherein the power distribution module (2) has an A bus bar (6) and a B bus bar (7) inside, wherein the electric device (3) comprises an important device of the whole machine (8) and a load device (9), wherein the A channel of the main power supply module (4) and the backup power supply module (5) are connected to the A bus bar (6), wherein the A bus bar (6) is connected to the important device of the whole machine (8), wherein the B channel of the main power supply module (4) is connected to the B bus bar (7), wherein the B bus bar (7) is connected to the load device (9); The transmission priority of the main power supply module (4) is greater than the transmission priority of the backup power supply module (5), and when the main power supply module (4) fails in transmission, the power distribution module (2) receives power from the backup power supply module (5) via the A-line bus bar (6).

2. The redundant power supply system according to claim 1, characterized in that: A first unidirectional control switch (10) is provided between the B channel of the main power supply module (4) and the A channel of the main power supply module (4); when a transmission failure occurs in the A channel, the B channel automatically switches to the A channel.

3. The redundant power supply system according to claim 2, characterized in that: A first current acquisition module (11) and a second current acquisition module (12) are provided inside the main power supply module (4); the first current acquisition module (11) is used to detect the current in channel A, and the second current acquisition module (12) is used to detect the current in channel B.

4. The redundant power supply system according to claim 1, characterized in that: A second unidirectional control switch (13) is provided between the B-way busbar (7) of the power distribution module (2) and the A-way busbar (6); when the A-way busbar (6) has a transmission failure, the B-way busbar (7) automatically switches to the A-way busbar (6).

5. The redundant power supply system according to claim 4, characterized in that: The power distribution module (2) has a first voltage acquisition module (14) and a second voltage acquisition module (15) inside, the first voltage acquisition module (14) being used to detect the voltage inside the A-way bus bar (6), and the second voltage acquisition module (15) being used to detect the voltage inside the B-way bus bar (7).

6. The redundant power supply system according to claim 1, characterized in that: The main power supply module (4) comprises an AC generator (16) and a rectifier unit (17); the AC generator (16) has an A channel and a B channel; the A channel and the B channel of the AC generator (16) are respectively connected to the rectifier unit (17); the rectifier unit (17) has an A channel and a B channel; the A channel of the rectifier unit (17) is connected to the A-channel bus bar (6) of the power distribution module (2); and the B channel of the rectifier unit (17) is connected to the B-channel bus bar (7) of the power distribution module (2).

7. The redundant power supply system according to claim 1, characterized in that: The backup power supply module (5) comprises a first lithium battery (18) and a second lithium battery (19), wherein the first lithium battery (18) and the second lithium battery (19) are respectively connected to the A-line bus bar (6) of the power distribution module (2).

8. A drone, characterized in that: A redundant power supply system comprising any one of claims 1-7.

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