Power supply and distribution management controller and power supply device

Abstract

The utility model provides a power supply and distribution management controller and a power supply device with the same. The power supply and distribution management controller comprises a rectifying circuit, a step-down circuit, a main control board, a main relay and a pre-charging circuit. The input end of the rectifying circuit is suitable for being electrically connected with the output end of a power generation device, the output end of the rectifying circuit is electrically connected with the input end of the step-down circuit, and the output end of the rectifying circuit is provided with a main relay; the output end of the rectifying circuit is suitable for being electrically connected with an electric load through main relays, the number of the pre-charging circuits is consistent with that of the main relays, the pre-charging circuits and the main relays are connected in a one-to-one correspondence mode, each pre-charging circuit comprises a pre-charging relay and a pre-charging resistor which are connected in series, and the input end and the output end of each pre-charging circuit are electrically connected with the input end and the output end of the corresponding main relay respectively; the main control board is electrically connected with the control end of the main relay and the control end of the pre-charging relay. The main relay and the electric load connected with the main relay can be protected through the pre-charging circuit, overcurrent damage is prevented, and normal use of electric equipment is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of power supply and distribution managers, and in particular to a power supply and distribution management controller and a power supply device. Background Art

[0002] Large electrical equipment such as drones and electric vehicles are often equipped with power generators. These devices typically require a power source to power the starter motor to start the engine, which then drives the generator to generate three-phase AC power. These large electrical devices have complex power requirements, placing even more complex demands on power conversion and distribution systems. Specifically, some loads require high-voltage DC power, such as 270V DC for some high-voltage loads on drones, while others require low-voltage DC power, such as 28V DC. The power requirements of these loads also vary at different times.

[0003] Therefore, these large-scale electrical equipment are not only equipped with power generation devices, but also with an additional power supply and distribution system, also known as a power supply and distribution manager or an integrated controller. The power supply and distribution system needs to rectify the three-phase AC output of the generator to stably output high-voltage DC power. It also needs to step down some of the high-voltage DC power to stably output low-voltage DC power. In addition, relays are configured between the power load and the DC output terminal to which it is electrically connected (whether it is a high-voltage DC output terminal or a low-voltage DC output terminal). The main control board is set to control the on and off of the relay to implement power distribution management, thereby ensuring the orderly and accurate supply of electrical energy.

[0004] However, at the moment the high voltage is turned on, the relay will stick due to overcurrent, causing the relay to burn out and unable to supply power to its corresponding electrical load in time, affecting the normal operation of the electrical equipment.

[0005] Therefore, how to prevent the relay from being damaged when the circuit is turned on has become an urgent problem to be solved by those skilled in the art. Utility Model Content

[0006] In order to prevent damage to the relay at the moment of circuit conduction, affecting the normal operation of the power supply equipment and the normal use of the electrical equipment, the present application provides a power supply and distribution management controller and a power supply device.

[0007] To achieve the purpose of this utility model, a power supply and distribution management controller is provided, comprising:

[0008] Rectifier circuit, step-down circuit, main control board, main relay and pre-charging circuit;

[0009] The input end of the rectifier circuit is suitable for being electrically connected to the output end of the power generation device, and is used to rectify the AC power output by the power generation device into DC power. The output end of the rectifier circuit is electrically connected to the input end of the step-down circuit, and the output end of the rectifier circuit is provided with a main relay;

[0010] The output end of the rectifier circuit is suitable for being electrically connected to an electrical load through a main relay, the number of the pre-charging circuits is consistent with the number of the main relays and they are connected one-to-one, the pre-charging circuit includes a pre-charging relay and a pre-charging resistor connected in series, and the input end and the output end of the pre-charging circuit are electrically connected to the input end and the output end of the main relay respectively;

[0011] The main control board is electrically connected to the control end of the main relay and the control end of the pre-filling relay respectively, and is used to control the on and off states of the main relay and the pre-filling relay.

[0012] According to another aspect of the present application, a power supply device is provided, comprising:

[0013] Power generation device and the aforementioned power supply and distribution management controller;

[0014] The power generation device is suitable for generating and outputting alternating current, and the output end of the power generation device is electrically connected to the input end of the rectifier circuit.

[0015] The present application can protect the main relay and the electrical load connected to it through the pre-charging resistor and pre-charging relay of the pre-charging circuit, reduce the risk of overcurrent damage, and ensure the normal operation of the power supply equipment and the normal use of the electrical equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram showing the structure of a power supply and distribution management controller according to an embodiment of the present application is shown;

[0017] Figure 2 An exploded diagram of a power supply and distribution management controller according to an embodiment of the present application is shown;

[0018] Figure 3 A schematic structural diagram of a protective box according to an embodiment of the present application is shown;

[0019] Figure 4 A schematic structural diagram of a power supply device according to an embodiment of the present application is shown.

[0020] Rectifier circuit 100, dummy load resistor 120, first power supply 130, step-down circuit 200, second power supply 210, bus bar 310, main relay K1, pre-charge relay K2, pre-charge resistor R1, frequency modulator 400, main control board 500, current transformer 510, voltage acquisition board 520, protection box 600, heat sink 610, fan 620, aviation plug 630, box body 640, support leg 641, cover 650, power supply and distribution management controller 700, power generation device 800. DETAILED DESCRIPTION

[0021] Various exemplary embodiments, features, and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

[0022] It should be understood that the terms "length", "width", "height", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention or simplifying the description, and do not indicate or imply 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 invention.

[0023] In addition, numerous specific details are provided in the detailed description below to better illustrate the present application. Those skilled in the art will appreciate that the present application can be practiced without certain specific details. In some instances, methods, means, components, and circuits well known to those skilled in the art are not described in detail in order to highlight the main purpose of the present application.

[0024] The present application provides a power supply and distribution management controller 700, including a rectifier circuit 100, a step-down circuit 200, a main control board 500, a main relay K1 and a pre-charging circuit.

[0025] The input end of the rectifier circuit 100 is electrically connected to the output end of the power generation device 800, and is used to rectify the AC power output by the power generation device 800 into DC power. The output end of the rectifier circuit 100 is electrically connected to the input end of the step-down circuit 200. The output ends of the rectifier circuit 100 and the step-down circuit 200 are both provided with a main relay K1.

[0026] The output of the rectifier circuit 100 is adapted to be electrically connected to an electrical load via a main relay K1. The input and output of the main relay K1 (which manages and controls the output of the rectifier circuit 100 and is connected to the output of the rectifier circuit 100) are electrically connected to the output of the rectifier circuit 100 and the input of the high-voltage electrical load, respectively. The output of the rectifier circuit 100 is provided with multiple high-voltage output branches, each of which has an input electrically connected to the output of the rectifier circuit 100. The output of each high-voltage output branch is electrically connected to a corresponding group of high-voltage electrical loads. Each high-voltage output branch is provided with a main relay K1, and a pre-charge circuit is connected in parallel to both the input and output of each main relay K1.

[0027] The output of the step-down circuit 200 is adapted to be electrically connected to an electrical load via a main relay K1. The input and output of the main relay K1 (which manages and controls the output of the step-down circuit 200 and is connected to the output of the step-down circuit 200) are electrically connected to the output of the step-down circuit 200 and the input of the low-voltage electrical load, respectively. The output of the rectifier circuit 100 is provided with multiple low-voltage output branches. The input of each low-voltage output branch is electrically connected to the output of the step-down circuit 200, and the output of each low-voltage output branch is electrically connected to a corresponding group of low-voltage electrical loads. Each low-voltage output branch is provided with a main relay K1, and a pre-charge circuit is connected in parallel to both the input and output of each main relay K1.

[0028] The number of pre-charging circuits is the same as that of the main relays K1 and they are connected one-to-one. The pre-charging circuit includes a pre-charging relay K2 and a pre-charging resistor R1 connected in series. The input and output ends of the pre-charging circuit are electrically connected to the input and output ends of the main relay K1 respectively.

[0029] The main control board 500 is electrically connected to the control end of the main relay K1 and the control end of the pre-filling relay K2, respectively, and is used to control the on and off states of the main relay K1 and the pre-filling relay K2.

[0030] The present application provides a rectifier circuit 100 to rectify the AC power generated and output by the power generation device 800 into the DC power required by the power load, and outputs it to the power load using high-voltage DC power (e.g., 270V DC power) through the main relay K1. For some power loads that require low-voltage DC power, the present application adds a step-down circuit 200 at the output end of the rectifier circuit 100 to step down the high-voltage DC power into low-voltage DC power, and outputs it to the corresponding power load through the main relay K1. Therefore, the power supply and distribution management controller 700 provided by the present application can simultaneously output high-voltage DC power and low-voltage DC power, meeting the complex and changeable power requirements of large-scale electrical equipment.

[0031] In addition, the power supply and distribution management controller 700 provided by this application integrates rectification, voltage conversion, and power distribution management, and is suitable for power management and power distribution on large power consumption platforms. A main control board 500 is provided to generate and issue power distribution instructions to control the on / off switching of the main relay K1. Multiple main relays K1 are provided, each of which is connected to a plurality of power loads in a one-to-one correspondence. The main relays K1 are used to control the on / off switching of the corresponding output power supply circuits, thereby controlling whether the power generated by the power generation device 800 can supply power to the corresponding power loads, thereby achieving the purpose of power distribution.

[0032] When the electric load is the larger capacitive load common in the electric facility, if main relay K1 is not provided with pre-charge circuit, it is directly connected to the capacitor, now the voltage of rectifier circuit 100 / step-down circuit 200 output is higher, especially the direct current directly output by rectifier circuit 100, and the voltage on capacitor is close to 0, now equivalent to instantaneous short circuit, load resistance is wire and relay contact resistance, and resistance value is very small, according to Ohm's law, voltage is large, resistance is small, and it is obvious that instantaneous current can reach tens of thousands of amperes, and main relay K1 is very easy to damage. The application is provided with pre-charge circuit in parallel on both sides of the input and output of main relay K1, and pre-charge process is added in output process. Main relay K1 is disconnected first, and main control board 500 controls pre-charge relay K2 closure, and the pre-charge circuit that pre-charge relay K2 and pre-charge resistance R1 are connected in series to form is first connected, and pre-charge resistance R1 is used to limit current, and slowly capacitive electric load is pre-charged, now because pre-charge resistance R1, the resistance in power supply circuit increases, and instantaneous current reduces, and safety is high. During the pre-charging process, the voltage value of the capacitor gradually increases and the pre-charging current gradually decreases. After the capacitor voltage approaches the output voltage of the rectifier circuit 100 / step-down circuit 200, the pre-charging relay is cut off and the main relay K1 is turned on. At this time, the main relay K1 will not be stuck due to overcurrent, causing damage to the main relay K1 and affecting the normal power supply and distribution of the power load. Compared with the traditional power supply and distribution controller, this application effectively prevents the damage to the main relay K1 at the moment of circuit conduction, and at the same time avoids the impact of the large current generated at the moment of circuit conduction on the back-end electrical equipment.

[0033] In one possible implementation, the rectifier circuit 100 uses an IGBT rectifier, and the step-down circuit 200 uses a buck circuit. The control end of the rectifier circuit 100 and the control end of the step-down circuit 200 are both electrically connected to the main control board 500, and the main control board 500 is used to control the rectification and step-down operations, for example, how many volts the step-down circuit 200 steps down to.

[0034] In one possible implementation, an information acquisition module is also included; the information acquisition module includes a voltage acquisition board 520, which is electrically connected to the output end of the main relay K1 to measure the output voltage value, and the signal output end of the voltage acquisition board 520 is electrically connected to the main control board 500 for communication.

[0035] In one possible implementation, the information acquisition module includes a current measurement circuit electrically connected to the output terminal of the main relay K1 to measure the output current value. The signal output terminal of the current measurement circuit is electrically connected to the main control board 500 for communication. The current measurement circuit uses a current transformer 510, which is electrically connected to the output terminal of the main relay K1. The current transformer 510 measures the circuit current between the main relay K1 and the load and provides real-time feedback to the main control board 500.

[0036] In one possible implementation, a protective box 600 is further included; except for the speed sensor located in the protective box 600, the remaining components, such as the frequency modulator 400, the rectifier circuit 100, the step-down circuit 200, the main control board 500, the main relay K1, and the pre-charging circuit are all installed in the protective box 600. Furthermore, the protective box 600 includes a box body 640 and a cover 650. The box body 640 has an internal cavity with an open end. The rectifier circuit 100, the step-down circuit 200, the main control board 500, the main relay K1, and the pre-charging circuit are all installed in the box body 640. The cover 650 matches the opening of the box body 640. The cover 650 is detachably connected to the open end of the box body 640. By removing the cover 650, the components in the box can be loaded and unloaded and repaired and maintained, which is convenient and quick.

[0037] In a possible implementation, heat dissipation fins 610 are provided on the outer wall of the protection box 600 .

[0038] Furthermore, the protective box 600 is a square box, usually placed on a table or the ground. In order to ensure the heat dissipation effect of the internal components at the grounded end of the protective box 600, the present application sets a number of legs 641 on the outer wall of the protective box 600. The legs 641 are connected to the protective box 600, and it is stipulated that one side of the protective box 600 is facing the ground. One end of the legs 641 protrudes from the side wall of the protective box 600 facing the ground, and the protruding lengths of two or more legs 641 are consistent. This supports the protective box 600 off the ground / desktop and maintains a distance from the ground / desktop to facilitate air circulation and heat dissipation. Heat dissipation fins 610 are also provided on the outer wall of the protective box 600 facing the ground to enhance the heat dissipation effect. Furthermore, the side wall of the protective box 600 is provided with heat dissipation holes, and the heat dissipation holes are equipped with fans 620 to promote the exchange and circulation of air inside and outside the box.

[0039] In a possible implementation, a temperature sensor is further included. The temperature sensor is installed in the protection box 600, and its detection end is set close to high-voltage and heat-generating components such as the rectifier circuit 100. The output end of the temperature sensor is electrically connected to the main control board 500.

[0040] In one possible implementation, the protective box 600 includes a cover 650 and a box body 640. The box body 640 has an internal cavity with an open end. The cover 650 is detachably connected to the open end of the box body 640 to open / seal the internal cavity of the box body 640. The connection is a sealed connection. For example, the cover 650 is snap-fitted to the open end of the box body 640, and a sealing ring is provided between the cover 650 and the side wall of the open end of the box body 640. The cover 650 is plate-shaped, and the outer edges of the cover 650 protrude from the side wall of the box body 640. At least the outer edges of the inclined ends of the cover 650 protrude from the side wall of the box body 640, and all outer edges can protrude from the side wall of the box body 640. The side of the box 640 facing away from its opening faces the ground, and the cover 650 is arranged at an angle to the outer wall facing the ground. If legs 641 are provided, the protruding lengths of the multiple legs 641 are the same, and the ends of the multiple legs 641 facing away from the box 640 are parallel to the flat plate surface of the box 640 facing the ground. The inclination angle of the cover 650 (relative to the ground) is 10 to 30 degrees, preferably 18 degrees. The box 640 is provided with heat dissipation fins 610 on the ground, and the cover 650 is also provided with heat dissipation fins 610 on the side facing away from the box 640. The heat dissipation fins 610 refer to a plurality of linear heat dissipation grooves arranged on the outer wall in the same direction (in the direction of the body length), which can increase the heat dissipation area and thus ensure the heat dissipation effect. Furthermore, the length direction of the heat dissipation slot of the cover 650 is parallel to the tilt direction of the cover 650, and the two ends of the heat dissipation slot in the length direction pass through the tilted ends of the cover 650, that is, the heat dissipation slot is a through slot with the width ends closed and the length ends connected and passing through. The tilted ends refer to the length end of the heat dissipation slot pointing to the lower tilted end of the cover 650 (close to the ground), using gravity to backflow the water on the cover 650 and flow out from the lower side, which has the effect of a waterproof diversion slot. Moreover, because the outer edge of this end of the cover 650 (the tilted lower end) protrudes from the side wall of the box 640, the diverted water flow falls away from the box 640. Figure 3 As shown, Figure 3 The area connected by the middle dotted line and its two ends and the upper solid line is the location of the heat dissipation slot of the heat dissipation fin 610 in the perspective view. The dotted line is the bottom surface of the slot structure. The length direction of the heat dissipation slot and the tilt direction of the cover 650 are the same as Figure 3 The dotted lines in the same direction.

[0041] Furthermore, the box 640 is a rectangular parallelepiped structure with one end of the box's length obliquely cut by a cover 650. Fans 620 are located on opposite sides of the box 640, near the inclined ends of the cover 650. The outer edges of the inclined ends of the cover 650, which extend beyond the side walls of the box 640, shield the fan 620 from rain, directing water away from the fan 620. This provides both heat dissipation and a degree of waterproofing. The ground-facing heat dissipation slots of the box 640 also extend along their length, extending away from the ground, and provide a degree of waterproofing.

[0042] In one possible implementation, the leg 641 is in an elongated shape, with one end of the leg 641 connected to the protective box 600 and the other end of the leg 641 extending out of the ground-facing side wall of the protective box 600. The other end of the leg 641, i.e., the extended end, is retractable along its length.

[0043] In a possible implementation, an aviation plug 630 is installed on the side wall of the protection box 600 , and the frequency modulator 400 , the rectifier circuit 100 , the main relay K1 and the main control board 500 are all electrically connected to external devices through the aviation plug 630 .

[0044] In one possible implementation, a first power supply 130 and a second power supply 210 are further included. The output end of the rectifier circuit 100 is electrically connected to the input end of the first power supply 130 through a main relay K1, and the output end of the step-down circuit 200 is electrically connected to the output end of the second power supply 210 through a main relay K1. The output ends of the first power supply 130 and the second power supply 210 are suitable for being electrically connected to electrical loads, serving as emergency temporary backup power supplies for the electrical loads.

[0045] In one possible implementation, the system further includes a frequency regulator 400. The input of the frequency regulator 400 is adapted to be electrically connected to the output of the power generation device 800, performing secondary frequency modulation on the AC power outputted by the power generation device 800. The output of the frequency regulator 400 is adapted to be electrically connected to the power grid circuit, and the frequency regulator 400 functions as a grid-connected device. The main control board 500 is electrically connected to the control terminal of the frequency regulator 400. Furthermore, the system further includes a speed sensor adapted to be connected to the generator of the power generation device 800 to measure the generator speed. The output of the speed sensor is electrically connected to the main control board 500 for communication.

[0046] In one possible implementation, the output of the power generation device 800 is electrically connected to the input of the frequency modulator 400, and the output of the frequency modulator 400 is electrically connected to the input of the rectifier circuit 100. In other words, the output of the power generation device 800 is electrically connected to the input of the rectifier circuit 100 through the frequency modulator 400.

[0047] In one possible implementation, a dummy load resistor 120 is provided at the output end of the rectifier circuit 100 to ensure the stability and reliability of the power supply circuit and stabilize the voltage output. This application does not impose specific restrictions on the position of the dummy load resistor 120 relative to the main relay K1 on the high-voltage output branch. It is sufficient that the high-voltage direct current output by the rectifier circuit 100 is controlled by the main relay K1 and regulated by the dummy load circuit before being output to the high-voltage load.

[0048] In one possible implementation, a memory device is also included, with its input electrically connected to the main control board 500 for future reference. The main control board 500 is electrically connected to the controller / detection element output of the external power generation device 800 / the drone's communication device via a communication aerial plug to obtain real-time feedback on external power generation, distribution, and consumption, allowing for timely and flexible adjustment of its control instructions.

[0049] In one possible implementation, multiple main relays K1 are arranged adjacent to each other, and the aviation plugs 630 connected to the output ends of the multiple main relays K1 are arranged adjacent to each other on the same side of the protective box 600. The input end of the main relay K1 is electrically connected to the output end of the rectifier circuit 100 via the busbar 310. Furthermore, the output end of the main relay K1 is connected to the aviation plug 630 via the busbar 310 to supply power to the electrical load connected to the aviation plug 630. The busbar 310 is equipped with an insulation detector. The insulation detector is suitable for detecting whether there is leakage in high-voltage areas such as the connection point between the output end of the rectifier circuit 100 and the main relay K1, and the connection point between the output end of the main relay K1 and the aviation plug 630. The signal output end of the insulation detector is electrically connected to the main control board 500.

[0050] In one possible implementation, the main control board 500 is provided with an alarm, which can be an audible and visual alarm, such as a speaker, an indicator light, etc. When the alarm uses an indicator light, an observation window needs to be set at the corresponding position of the protective box 600, or the indicator light needs to be passed through the protective box 600 and installed on the outer wall of the protective box 600 to ensure the normal delivery of the alarm signal.

[0051] According to another aspect of the present application, a power supply device is provided, comprising a power generation device 800 and the aforementioned power supply and distribution management controller 700. The power generation device 800 is adapted to generate and output AC power, and the output terminal of the power generation device 800 is electrically connected to the input terminal of the rectifier circuit 100.

[0052] In one possible implementation, the power generation device 800 includes a starter, an engine, and a generator. The starter is connected to the engine to drive the engine, and the engine is connected to the generator to provide torque for the generator. The generator converts the mechanical energy of the rotation into AC electrical energy and outputs it to the rectifier circuit 100. Furthermore, the starter is a starter motor, and the power generation device 800 also includes a power supply for the starter motor.

[0053] The embodiments of the present application have been described above. The above description is illustrative and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or improvements to the technology in the market, or to enable other persons skilled in the art to understand the embodiments disclosed herein.

Claims

1. A power supply and distribution management controller, characterized in that: include: Rectifier circuit, step-down circuit, main control board, main relay and pre-charging circuit; The input end of the rectifier circuit is suitable for being electrically connected to the output end of the power generation device, and is used to rectify the AC power output by the power generation device into DC power. The output end of the rectifier circuit is electrically connected to the input end of the step-down circuit, and the output end of the rectifier circuit is provided with a main relay; The output end of the rectifier circuit is suitable for being electrically connected to the power load through the main relay, the number of the pre-charging circuit is consistent with the number of the main relays and is connected one-to-one, and multiple main relays are connected one-to-one with multiple power loads, and the main relay is used to control the conduction or disconnection of the corresponding output power supply circuit; the pre-charging circuit includes a pre-charging relay and a pre-charging resistor connected in series, and the input end and output end of the pre-charging circuit are electrically connected to the input end and output end of the main relay respectively; The main control board is electrically connected to the control end of the main relay and the control end of the pre-filling relay, respectively, for controlling the on and off states of the main relay and the pre-filling relay; Among them, when the main control board controls the on and off states of the main relay and the pre-charging relay, a pre-charging process is added to the output process, the main relay is first disconnected, the main control board controls the pre-charging relay to close, and the pre-charging circuit composed of the pre-charging relay and the pre-charging resistor connected in series is first connected, and the pre-charging resistor is used for current limiting; after the capacitor voltage approaches the output voltage of the rectifier circuit / the step-down circuit, the pre-charging relay is cut off and the main relay is connected.

2. The power supply and distribution management controller according to claim 1, characterized in that: It also includes an information collection module; The information acquisition module includes a voltage collector, which is electrically connected to the output end of the main relay to measure the output voltage value, and the signal output end of the voltage collector is electrically connected to the main control board for communication.

3. The power supply and distribution management controller according to claim 2, characterized in that: The information acquisition module includes a current measurement circuit, which is electrically connected to the output end of the main relay to measure the output current value, and a signal output end of the current measurement circuit is electrically connected to the main control board for communication.

4. The power supply and distribution management controller according to claim 1, characterized in that: Also includes a protective case; The rectifier circuit, the step-down circuit, the main control board, the main relay and the pre-charging circuit are all installed in the protection box.

5. The power supply and distribution management controller according to claim 4, characterized in that: The protective box includes a box body and a cover. The box body is provided with an internal cavity with one end open. The rectifier circuit, the step-down circuit, the main control board, the main relay and the pre-charging circuit are all installed in the box body. The cover matches the opening of the box body and is detachably connected to the open end of the box body.

6. The power supply and distribution management controller according to claim 4, characterized in that: The outer wall of the protection box is provided with heat dissipation fins.

7. The power supply and distribution management controller according to claim 6, characterized in that: One side of the protection box faces the ground, and the outer wall of the protection box facing the ground is provided with heat dissipation fins. The protection box is further provided with a support leg, which is connected to the protection box, and one end of the support leg protrudes from the side wall of the protection box facing the ground.

8. The power supply and distribution management controller according to claim 1, characterized in that: It also includes a first power supply and a second power supply. The output end of the rectifier circuit is electrically connected to the input end of the first power supply through a main relay, and the output end of the step-down circuit is electrically connected to the output end of the second power supply through a main relay. The output ends of the first power supply and the second power supply are suitable for being electrically connected to electrical loads as emergency temporary backup power supplies for the electrical loads.

9. A power supply device, characterized in that: include: A power generation device and a power supply and distribution management controller according to any one of claims 1 to 8; The power generation device is suitable for generating and outputting alternating current, and the output end of the power generation device is electrically connected to the input end of the rectifier circuit.

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