Off-grid power supply equipment

Abstract

The off-grid power supply equipment comprises a shell, a circuit board and an electric reactor, the shell is provided with a containing cavity, the circuit board and the electric reactor are both contained in the containing cavity and connected with the shell, the electric reactor is electrically connected with the circuit board, and the electric reactor and the circuit board are relatively independently arranged. The off-grid power supply equipment provided by the embodiment of the utility model has better load capacity or performance.

Description

Technical Field

[0001] This application relates to the field of power equipment technology, and in particular to an off-grid power supply device. Background Technology

[0002] Currently, off-grid generators are widely used in places where there is no connection to the public power grid or the public power grid is unstable, such as remote areas, field facilities, or mobile application scenarios. Off-grid generators can convert the DC power from batteries or solar panels into AC power to provide power to the load.

[0003] In related technologies, off-grid units include electronic control devices, which consist of circuit boards and various components integrated on the circuit boards. The electronic control devices are mainly used to convert direct current (DC) to alternating current (AC). Improving the load capacity or performance of off-grid units is a technical problem that needs to be solved. Utility Model Content

[0004] Based on this, this application provides an off-grid power supply device to improve the load capacity or performance of the off-grid power supply device.

[0005] The off-grid power supply equipment provided in this application embodiment includes:

[0006] The housing has a receiving cavity;

[0007] The circuit board is housed within the receiving cavity;

[0008] The reactor is housed in a receiving cavity and fixedly connected to the housing. The reactor is electrically connected to the circuit board, and the reactor and the circuit board are set up relatively independently.

[0009] In one possible implementation, the off-grid power supply equipment further includes a first terminal block, the first terminal block and the reactor are stacked along a first direction, and both the circuit board and the first terminal block are electrically connected to the reactor.

[0010] In one possible implementation, the off-grid power supply equipment also includes a mounting bracket connected to the housing, and a first terminal block fixedly connected to the mounting bracket.

[0011] In one possible implementation, the mounting bracket includes a first mounting portion and a second mounting portion that are fixedly connected to each other, wherein in a first direction, the second mounting portion is located between the first terminal and the reactor;

[0012] The first mounting part is fixedly connected to the housing, and the first terminal block is fixedly connected to the second mounting part.

[0013] In a possible implementation, the off-grid power supply device further comprises a second wiring terminal, the accommodation cavity comprises a wiring area and a mounting area, the electric reactor is located in the mounting area, and the second wiring terminal is located in the wiring area. The second wiring terminal is configured to be electrically connected with the direct-current power supply device.

[0014] The first mounting portion comprises a first mounting plate, the second mounting portion is fixedly connected with the first mounting plate, and the wiring area and the mounting area are located on opposite sides of the first mounting plate.

[0015] In a possible implementation, the off-grid power supply device further comprises a wiring harness assembly, the wiring harness assembly comprising a first wiring harness, a second wiring harness and a third wiring harness.

[0016] The circuit board has a first connection end and a second connection end, the electric reactor has a third connection end and a fourth connection end, the first wiring terminal has a fifth connection end and a sixth connection end, the first wiring harness is electrically connected with the first connection end and the third connection end, the second wiring harness is electrically connected with the fourth connection end and the fifth connection end, and the third wiring harness is electrically connected with the sixth connection end and the second connection end.

[0017] In a possible implementation, one of the first connection end and the second connection end is a live terminal, and the other of the first connection end and the second connection end is a neutral terminal.

[0018] In a possible implementation, the off-grid power supply device further comprises at least one fixing assembly, and the electric reactor is fixedly connected with the shell through the fixing assembly.

[0019] In a possible implementation, the electric reactor comprises a third mounting portion, the third mounting portion has at least one mounting hole, and the fixing assembly is arranged correspondingly to the mounting hole.

[0020] The fixing assembly comprises a first connecting piece and a second connecting piece, one end of the first connecting piece is connected with the shell, the other end of the first connecting piece penetrates through the mounting hole and is connected with the second connecting piece, and the second connecting piece is stopped on one side of the third mounting portion.

[0021] In a possible implementation, the first connecting piece has an external thread, and the second connecting piece has an internal thread matched with the external thread, so that the second connecting piece is threadedly connected with the first connecting piece.

[0022] In a possible implementation, the at least one mounting hole is a waist-shaped hole.

[0023] In a possible implementation, the shell comprises a bottom plate and a plurality of side walls fixedly connected with each other, and the plurality of side walls are sequentially connected in a head-to-tail manner along the side edges of the bottom plate.

[0024] The electric reactor is fixedly connected with the bottom plate, the electric reactor is arranged close to the side edges of the bottom plate, and at least one side wall is provided with a ventilation hole.

[0025] The off-grid power supply device provided by the embodiment of the present application comprises a shell, a circuit board and a reactor, and the shell comprises a containing cavity. The containing cavity is arranged to accommodate the circuit board and the reactor, so as to mechanically protect the circuit board and the reactor. The circuit board is arranged to integrate control circuits and protection circuits, so that the circuit board realizes DC-to-AC inversion, over-temperature and overload protection, etc. The reactor is arranged to smooth output voltage and current, and adjust output voltage, so as to improve the power output quality and stability of the off-grid power supply device. The reactor and the circuit board are arranged independently in physical space, so as to reduce the size and cost of the circuit board.

[0026] In addition to the technical problems solved by the above-described embodiments of the present application, the technical features constituting the technical solutions and the beneficial effects brought by these technical features, other technical problems solved by the off-grid power supply device provided by the present application, other technical features included in the technical solutions and the beneficial effects brought by these technical features will be further described in detail in the specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0027] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present application and, together with the specification, serve to explain the principles of the present application.

[0028] Figure 1 A structural schematic diagram of the off-grid power supply device provided by the embodiment of the present application is shown in the figure.

[0029] Figure 2 A front view of the off-grid power supply device provided by the embodiment of the present application is shown in the figure. Figure 1

[0030] Figure 3 Another structural schematic diagram of the off-grid power supply device provided by the embodiment of the present application is shown in the figure.

[0031] Figure 4 A connection schematic diagram of the circuit board, the reactor and the first terminal in the off-grid power supply device provided by the embodiment of the present application is shown in the figure.

[0032] Figure 5 A connection schematic diagram of the circuit board and the first terminal in the off-grid power supply device provided by the embodiment of the present application is shown in the figure.

[0033] Figure 6 A partial enlarged view of A in the figure. Figure 1

[0034] Figure 7 A structural schematic diagram of the reactor in the off-grid power supply device provided by the embodiment of the present application is shown in the figure.

[0035] REFERENCE NUMERALS:

[0036] ​​100 - housing; 110 - bottom plate; 120 - side wall; 200 - circuit board; 300 - reactor; 310 - third mounting portion; 311 - mounting hole; 400 - first wiring terminal; 500 - mounting bracket; 510 - first mounting portion; 511 - first mounting plate; 512 - second mounting plate; 520 - second mounting portion; 600 - wire harness assembly; 610 - first wire harness; 620 - second wire harness; 630 - third wire harness; 640 - fourth wire harness; 700 - fixing assembly; 710 - first connecting member; 800 - second wiring terminal.

[0037] The specific embodiments of the present application have been shown and described in the above-described drawings, and will be described in more detail hereinafter. The drawings and the written description are not intended to restrict the scope of the present application in any way, but are merely to illustrate the concept of the present application to those skilled in the art by reference to a particular embodiment. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings of the preferred embodiments of the present application. In the drawings, the same or similar notations represent the same or similar parts or parts having the same or similar functions throughout. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of the present application. The embodiments of the present application will be described in detail below with reference to the drawings.

[0039] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "fixed", "mounted", "connected", "linked" should be understood broadly, for example, can be fixedly connected, can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0041] The terms "first", "second", "third" (if any) in the description and claims of this application and the above drawings are used to distinguish similar objects, and do not necessarily indicate a particular order or sequence. It should be understood that the data thus used can be interchanged, where appropriate, so that the embodiments of the application described herein can be carried out in other than the order shown or described herein.

[0042] In addition, the terms "comprising" and "having" and any variations thereof are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or display that includes a series of steps or units not necessarily limited to those clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products, or displays.

[0043] The off-grid machine includes an electric control device, the electric control device includes a circuit board and various components integrated on the circuit board, and the electric control device is mainly used to realize conversion of direct current to alternating current. How to improve the load capacity or performance of the off-grid machine is a technical problem to be solved.

[0044] Therefore, the off-grid power supply device provided by the embodiments of the present application has the advantages that the reactor can improve the load performance of the off-grid power supply device, and the size of the circuit board and the cost of the off-grid power supply device can be reduced.

[0045] The specific implementation of the off-grid power supply device provided by the embodiments of the present application is described in detail below in combination with the accompanying drawings.

[0046] Reference Figure 1 With Figure 2 As shown in the drawings, the off-grid power supply device provided by the embodiments of the present application includes a shell 100, a circuit board 200, and a reactor 300. The shell 100 has a receiving cavity, and the circuit board 200 and the reactor 300 are both accommodated in the receiving cavity. The reactor 300 is connected with the shell 100, the reactor 300 is electrically connected with the circuit board 200, and the reactor 300 and the circuit board 200 are relatively independently arranged.

[0047] In the embodiment, the shell 100 is used to mount the circuit board 200 and the reactor 300, etc., so as to accommodate the circuit board 200 and the reactor 300, etc. in the receiving cavity of the shell 100, and then mechanically protect the circuit board 200 and the reactor 300, etc.

[0048] The circuit board 200 can be integrated with a protection circuit, a control circuit, and electronic devices, etc. For example, the electronic devices can include power semiconductor devices such as IGBT (Insulated Gate Bipolar Transistor) and MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor), which can convert direct current into alternating current. The protection circuit can provide overload protection, short-circuit protection, over-temperature protection, etc. to ensure the safety of the off-grid power supply device and the load. The control circuit can adjust the output voltage and frequency to ensure that the output alternating current meets the requirements of the load.

[0049] The reactor 300 can smooth the output voltage and current to reduce high-frequency harmonics generated during inversion, thereby helping to improve the waveform quality of the output voltage and current. The reactor 300 can also adjust the output voltage of the off-grid power supply device to ensure that the off-grid power supply device can maintain stable output when the load changes, thereby improving the power output quality and stability of the off-grid power supply device.

[0050] In some embodiments, the reactor 300 is integrated on the circuit board 200 to improve the load capacity of the off-grid power supply device. However, integrating the reactor 300 on the circuit board 200 increases the size of the circuit board 200, thereby increasing the volume of the off-grid power supply device and increasing the cost of the off-grid power supply device. In addition, integrating the reactor 300 on the circuit board 200 makes the circuit board 200 heat more seriously, which is not conducive to the heat dissipation of the circuit board 200 and the reactor 300.

[0051] In other embodiments, the reactor 300 is arranged independently of the circuit board 200 in the accommodating cavity, i.e., the reactor 300 and the circuit board 200 are independent of each other in physical space. The reactor 300 and the circuit board 200 can be electrically connected through a wire harness, thereby connecting the reactor 300 to the circuit of the off-grid power supply device.

[0052] Since the reactor 300 does not need to be integrated on the circuit board 200, the size of the circuit board 200 can be smaller, and the design and process of the circuit board 200 are simpler, thereby reducing the cost of the circuit board 200. In addition, after the reactor 300 is separated from the circuit board 200, the reactor 300 can be away from the heat source of the circuit board 200, thereby facilitating the normal operation of the reactor 300. In addition, by arranging the reactor 300 and the circuit board 200 independently, the designer can choose whether to connect the reactor 300 according to user needs, thereby improving the flexibility of the design.

[0053] The off-grid power supply device provided by the embodiment of the present application comprises a shell 100, a circuit board 200 and a reactor 300. The shell 100 comprises a receiving cavity. The receiving cavity is arranged to accommodate the circuit board 200 and the reactor 300, so as to mechanically protect the circuit board 200 and the reactor 300. The circuit board 200 is arranged to integrate control circuits and protection circuits, so as to realize DC-to-AC inversion, over-temperature and overload protection of the circuit board 200. The reactor 300 is arranged to smooth output voltage and current and adjust output voltage, so as to improve the power output quality and stability of the off-grid power supply device. The reactor 300 and the circuit board 200 are arranged independently in physical space, so as to reduce the size and cost of the circuit board 200. Thus, the off-grid power supply device has a small size and low cost.

[0054] Referring to Figures 3 to 5 In a possible implementation, the off-grid power supply device further comprises a first wiring terminal 400. The first wiring terminal 400 and the reactor 300 are arranged in a first direction. The circuit board 200 and the first wiring terminal 400 are electrically connected to the first wiring terminal reactor 300.

[0055] It should be noted that the first wiring terminal 400 can be used to connect a load. The circuit board 200 is electrically connected to the reactor 300, and the reactor 300 is connected to the first wiring terminal 400. In this way, the circuit board 200, the reactor 300 and the first wiring terminal 400 can be connected in series, thereby forming a circuit of the off-grid power supply device, and transmitting current to the load through the first wiring terminal 400.

[0056] The shell 100 can be approximately cuboid-shaped. For example, referring to the off-grid power supply device shown in Figure 3 The first direction (X direction) can be the up-down direction of the off-grid power supply device. The first wiring terminal 400 and the reactor 300 can be arranged in the up-down direction. The reactor 300 is arranged at the lower side, and the first wiring terminal 400 is arranged at the upper side. In this way, the existing space of the receiving cavity can be fully utilized, thereby preventing the volume of the shell 100 from being increased due to the arrangement of the reactor 300, and facilitating the reduction of the volume of the off-grid power supply device. Moreover, the installation of the reactor 300 can be completed without making too many changes to the off-grid power supply device.

[0057] Continuing to refer to Figure 3 In some embodiments, the off-grid power supply device further comprises a mounting bracket 500. The mounting bracket 500 is connected to the shell 100, and the first wiring terminal 400 is connected to the mounting bracket 500.

[0058] In this way, by arranging the mounting bracket 500 in the accommodating cavity, the first wiring terminal 400 can be mounted on the mounting bracket 500, and then the first wiring terminal 400 is fixed in the accommodating cavity by the mounting bracket 500, and the first wiring terminal 400 and the reactor 300 can be arranged in the first direction by the mounting bracket 500, and then the space of the accommodating cavity can be fully utilized to mount the reactor 300.

[0059] With reference to Figures 3 to 5 In a possible implementation, as shown in the drawings, the mounting bracket 500 includes a first mounting portion 510 and a second mounting portion 520 connected with each other, and the first mounting portion 510 and the second mounting portion 520 are arranged at an angle, and in the first direction, the second mounting portion 520 is located between the first wiring terminal 400 and the reactor 300. The first mounting portion 510 is connected with the shell 100, and the first wiring terminal 400 is connected with the second mounting portion 520.

[0060] In this way, since the first mounting portion 510 is connected with the shell 100, the mounting bracket 500 can be fixed in the accommodating cavity as a whole, and since the first wiring terminal 400, the second mounting portion 520 and the reactor 300 are arranged in the first direction in sequence, and the first wiring terminal 400 is connected with the second mounting portion 520, the first wiring terminal 400 and the reactor 300 can be arranged in the first direction in stack, and then the space utilization of the accommodating cavity can be improved.

[0061] It should be noted that the off-grid power supply device can further include a fan, and the fan can be connected with the first mounting portion 510, and then the fan is fixed in the accommodating cavity, and is used to bring air into the area where the reactor 300 is located, and then the reactor 300 is cooled.

[0062] In a possible implementation, the off-grid power supply device further includes a second wiring terminal 800, the accommodating cavity includes a wiring area and a mounting area, the reactor 300 is located in the mounting area, and the second wiring terminal 800 is located in the wiring area, and the second wiring terminal 800 is configured to be electrically connected with the direct-current power supply device. The first mounting portion 510 includes a first mounting plate 511, and the second mounting portion 520 is fixedly connected with the first mounting plate 511, and the wiring area and the mounting area are located on opposite sides of the first mounting plate 511.

[0063] In this way, the first mounting plate 511 can separate the accommodating cavity into the wiring area and the mounting area which are independent of each other, the mounting area can be used to mount the reactor 300 and the first wiring terminal 400, and the wiring area can be used to arrange the second wiring terminal 800, and then the direct-current power supply device is electrically connected with the off-grid power supply device through the second wiring terminal 800. The direct-current power supply device can include but is not limited to a battery, a photovoltaic assembly and the like. Of course, the wiring area can also be arranged with other wiring terminals according to actual needs, such as communication lines and the like.

[0064] For example, the second wiring terminal 800 can be fixedly connected to the first mounting plate 511.

[0065] It can be understood that the first mounting portion 510 further comprises a second mounting plate 512, the first mounting plate 511 and the second mounting plate 512 are arranged at an angle, the first mounting plate 511 and the second mounting plate 512 are arranged on both sides of the wiring area, the second wiring terminal 800 can also be fixedly connected to the second mounting plate 512, and the second wiring terminal 800 can also be arranged on the bottom plate of the shell. The fan can be fixedly connected to the second mounting plate 512.

[0066] Referring to Figure 4 In a possible implementation, the off-grid power supply device further comprises a wiring harness assembly 600, and the wiring harness assembly 600 comprises a first wiring harness 610, a second wiring harness 620, and a third wiring harness 630.

[0067] The circuit board 200 has a first connection end and a second connection end, the reactor 300 has a third connection end and a fourth connection end, the first wiring terminal 400 has a fifth connection end and a sixth connection end, the first wiring harness 610 connects the first connection end and the third connection end, the second wiring harness 620 connects the fourth connection end and the fifth connection end, and the third wiring harness 630 connects the sixth connection end and the second connection end.

[0068] In this way, after the first wiring harness 610 connects the circuit board 200 and the reactor 300, the second wiring harness 620 connects the reactor 300 and the first wiring terminal 400, and the third wiring harness 630 connects the first wiring terminal 400 and the circuit board 200, the circuit board 200, the reactor 300, and the first wiring terminal 400 are connected in series, and then the reactor 300 can be connected in series in the circuit of the off-grid power supply device, and the load capacity of the output end of the off-grid power supply device can be increased.

[0069] Taking an off-grid power supply device with a single-phase output as an example, the circuit board 200 has an L line (fire wire) and an N line (zero wire) for electrical connection with a load, so that the alternating current converted by the off-grid power supply device is output to the load, and the reactor 300 can be connected in series on the L line or the N line.

[0070] Therefore, in some embodiments, one of the first connection end and the second connection end is a fire wire terminal, and the other of the first connection end and the second connection end is a zero wire terminal.

[0071] That is, the first connection end can be a fire wire terminal, and the second connection end can be a zero wire terminal, or the first connection end can be a zero wire terminal, and the second connection end can be a fire wire terminal.

[0072] Referring to Figure 5It is to be noted that, if the user needs to cancel the reactor 300 of the off-grid power supply device, the first wire harness 610 and the second wire harness 620 can be removed, and the first connecting end and the fifth connecting end are connected through the fourth wire harness 640, so as to electrically connect the circuit board 200 and the first connecting terminal 400. In this way, the off-grid power supply device can be flexibly adjusted according to the needs of the user, and thus adapt to different use scenarios.

[0073] Referring to Figure 6 As shown in a possible implementation, the off-grid power supply device further comprises at least one fixing assembly 700, and the reactor 300 is fixedly connected with the shell 100 through the fixing assembly 700. In this way, the reactor 300 can be fixed into the accommodating cavity through the fixing assembly 700. For example, the reactor 300 can be threadedly connected with the shell 100, riveted, or the like.

[0074] Referring to Figure 6 , Figure 7 As shown in some embodiments, the reactor 300 comprises a third mounting portion 310, and the third mounting portion 310 has at least one mounting hole 311, and the fixing assembly 700 is correspondingly arranged at the mounting hole 311. The fixing assembly 700 comprises a first connecting piece 710 and a second connecting piece, one end of the first connecting piece 710 is connected with the shell 100, the other end of the first connecting piece 710 penetrates through the mounting hole 311 and is connected with the second connecting piece, and the second connecting piece is stopped at one side of the third mounting portion 310.

[0075] In this way, through cooperation of the first connecting piece 710 and the second connecting piece, the third mounting portion 310 can be reliably connected to the shell 100, and thus the reactor 300 can be reliably fixed into the accommodating cavity.

[0076] The number of the fixing assembly 700 can be correspondingly arranged according to the number of the mounting hole 311. For example, as shown in Figure 7 The reactor 300 is provided with four mounting holes 311, and thus four fixing assemblies 700 can be correspondingly arranged.

[0077] In some embodiments, the first connecting piece 710 has an external thread, and the second connecting piece has an internal thread matched with the external thread, so that the second connecting piece is threadedly connected with the first connecting piece 710.

[0078] In this way, after the first connecting piece 710 penetrates through the mounting hole 311, the second connecting piece can be threadedly connected with the first connecting piece 710, so that the first connecting piece 710 is stopped at one side of the third mounting portion 310, and thus the first connecting piece 710 and the second connecting piece jointly fix the reactor 300 to the shell 100.

[0079] In a possible implementation, the at least one mounting hole 311 is a waist-shaped hole. In this way, the mounting position of the reactor 300 can be adjusted flexibly to ensure that each first connecting piece 710 can be inserted into the corresponding mounting hole 311, and the machining precision of the mounting hole 311 is reduced.

[0080] With reference to Figure 2 , Figure 3 and Figure 6 As shown in the drawings, in some embodiments, the shell 100 includes a bottom plate 110 and a plurality of side walls 120 fixedly connected to each other, and the plurality of side walls 120 are sequentially connected in a head-to-tail manner along the side edges of the bottom plate 110. The reactor 300 is fixedly connected to the bottom plate 110, and the reactor 300 is arranged close to the side edge of the bottom plate 110. At least one side wall 120 is provided with a ventilation hole.

[0081] In this embodiment, since the reactor 300 and the circuit board 200 are arranged independently, the reactor 300 can dissipate heat through convection with external air, that is, the reactor 300 can be arranged close to the edge of the shell 100, and air can enter and exit the accommodating cavity through the ventilation hole provided in the side wall 120, thereby removing the heat of the reactor 300 through the air to ensure the normal operation of the reactor 300.

[0082] The off-grid power supply device of this embodiment can improve the air flow speed and improve the heat dissipation effect of the reactor 300 by arranging the fan. As described above, the fan can be arranged between the reactor 300 mounting area and the DC wiring mounting area, and air can be introduced into the mounting area to dissipate heat for the reactor 300. Specifically, the fan can be connected to the first mounting portion 510, and then the fan is fixed in the accommodating cavity to dissipate heat for the reactor 300 through the fan.

[0083] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An off-grid power supply device, characterized in that, include: A housing having a receiving cavity; A circuit board, which is housed in the receiving cavity; A reactor is housed in the receiving cavity and fixedly connected to the housing. The reactor is electrically connected to the circuit board, and the reactor and the circuit board are arranged relatively independently.

2. The off-grid power supply equipment according to claim 1, characterized in that, It also includes a first terminal block, the first terminal block and the reactor are stacked along a first direction, and the circuit board and the first terminal block are both electrically connected to the reactor.

3. The off-grid power supply equipment according to claim 2, characterized in that, It also includes a mounting bracket, which is fixedly connected to the housing, and the first terminal block is fixedly connected to the mounting bracket.

4. The off-grid power supply equipment according to claim 3, characterized in that, The mounting bracket includes a first mounting part and a second mounting part that are fixedly connected to each other. In the first direction, the second mounting part is located between the first terminal and the reactor. The first mounting part is fixedly connected to the housing, and the first terminal block is fixedly connected to the second mounting part.

5. The off-grid power supply equipment according to claim 4, characterized in that, It also includes a second terminal block, the receiving cavity includes a wiring area and a mounting area, the reactor is located in the mounting area, the second terminal block is located in the wiring area, and the second terminal block is at least configured to be electrically connected to a DC power supply device; The first mounting part includes a first mounting plate, and the second mounting part is fixedly connected to the first mounting plate. The wiring area and the mounting area are located on opposite sides of the first mounting plate.

6. The off-grid power supply equipment according to any one of claims 2-5, characterized in that, It also includes a wire harness assembly, which includes a first wire harness, a second wire harness, and a third wire harness; The circuit board has a first connection terminal and a second connection terminal, the reactor has a third connection terminal and a fourth connection terminal, the first terminal has a fifth connection terminal and a sixth connection terminal, the first wire harness is electrically connected to the first connection terminal and the third connection terminal, the second wire harness is electrically connected to the fourth connection terminal and the fifth connection terminal, and the third wire harness is electrically connected to the sixth connection terminal and the second connection terminal.

7. The off-grid power supply equipment according to claim 6, characterized in that, One of the first connection terminal and the second connection terminal is a live wire terminal, and the other of the first connection terminal and the second connection terminal is a neutral wire terminal.

8. The off-grid power supply equipment according to any one of claims 1-5, characterized in that, It also includes at least one fixing component, through which the reactor is fixedly connected to the housing.

9. The off-grid power supply equipment according to claim 8, characterized in that, The reactor includes a third mounting portion, the third mounting portion having at least one mounting hole, the at least one mounting hole being an oblong hole, and the fixing component being disposed corresponding to the mounting hole; The fixing component includes a first connector and a second connector. The first connector has an external thread, and the second connector has an internal thread that matches the external thread. One end of the first connector is fixedly connected to the housing, and the other end of the first connector passes through the mounting hole and is threadedly connected to the second connector. The second connector is stopped on one side of the third mounting portion.

10. The off-grid power supply equipment according to any one of claims 1-5, characterized in that, The housing includes a base plate and multiple side walls that are fixedly connected to each other, and the multiple side walls are connected end to end along the side edge of the base plate. The reactor is fixedly connected to the base plate, and the reactor is located on the side of the base plate. At least one of the side walls is provided with a ventilation hole.

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