Electrical device and power system

Abstract

The utility model discloses an electrical device, which comprises a box body and a box cover, an installation space with one open end is defined by the box body, the box cover is arranged at the open end of the installation space, and the middle part of the box cover is connected with the box body; the explosion-proof assembly comprises a first magnetic part and a second magnetic part, the first magnetic part is arranged in the mounting space, and the second magnetic part is arranged on the surface, close to the mounting space, of the box cover and is close to the edge of the box cover; the first magnetic part and the second magnetic part are matched so that the box cover can open the open end of the installation space. Therefore, when the pressure in the mounting space reaches a preset pressure value, the box cover can open the open end of the mounting space through the cooperation of the first magnetic part and the second magnetic part, so that the pressure relief effect on the electrical device can be achieved, the electrical device is prevented from exploding, and the safety of the electrical device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power, in particular to an electric device and an electric power system having the electric device. Background Art

[0002] In the related art, the design of explosion-proof components of electrical devices has always been an important factor that cannot be ignored. The existing electrical device's box cover and box body are sealed by screw locking. The screw locking fixes the box cover and the box body. When the pressure in the box reaches a certain pressure value, the electrical device is prone to explosion, which greatly reduces the safety of the electrical device. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide an electrical device that can relieve pressure on the electrical device, avoid explosion of the electrical device, and improve the safety of the electrical device.

[0004] The utility model further proposes an electric power system having the above-mentioned electric device.

[0005] According to an embodiment of the utility model, the electrical device includes: a box body, which defines an installation space with one end open; a box cover, which is arranged at the open end of the installation space, and the middle part of the box cover is connected to the box body; an explosion-proof component, which includes a first magnetic component and a second magnetic component, the first magnetic component is arranged in the installation space, and the second magnetic component is arranged on the surface of the box cover close to the installation space and close to the edge of the box cover, when the pressure in the installation space reaches a preset pressure value, the first magnetic component and the second magnetic component cooperate to enable the box cover to open the open end of the installation space.

[0006] According to the electrical device of the embodiment of the utility model, the first magnetic component is arranged in the installation space, and the second magnetic component is arranged on the surface of the box cover close to the installation space and close to the edge of the box cover. When the pressure in the installation space reaches a preset pressure value, the first magnetic component and the second magnetic component cooperate to make the box cover open the open end of the installation space, thereby relieving pressure on the electrical device, avoiding explosion of the electrical device, and improving the safety of the electrical device.

[0007] According to some embodiments of the utility model, when the pressure in the installation space is less than the preset pressure value, the first magnetic member and the second magnetic member attract each other so that the box cover seals the open end of the installation space; and / or when the pressure in the installation space reaches the preset pressure value, the first magnetic member and the second magnetic member repel each other so that the box cover opens the open end of the installation space.

[0008] According to some embodiments of the present utility model, the electrical device further comprises: an elastic connecting member;

[0009] The elastic connecting member is connected between the box body and the box cover so that the box cover seals the open end of the installation space, and when the pressure in the installation space is greater than the preset pressure value, the first magnetic member and the second magnetic member repel each other so that the box cover opens the open end of the installation space; or

[0010] The elastic connecting member is compressed and connected between the box body and the box cover, the first magnetic member and the second magnetic member attract each other so that the box cover seals the open end of the installation space, and when the pressure in the installation space is greater than the preset pressure value, the current passing into the first magnetic member and / or the second magnetic member is reduced or closed so that the attraction force between the first magnetic member and the second magnetic member is smaller than the elastic force of the elastic connecting member.

[0011] According to some embodiments of the present invention, there are multiple first magnetic members and multiple second magnetic members, the multiple first magnetic members correspond to the multiple second magnetic members one by one, and the multiple second magnetic members are arranged along the edge of the box cover.

[0012] According to some embodiments of the present invention, the box cover has a plurality of corner areas, and a plurality of the second magnetic members are respectively disposed in the plurality of corner areas.

[0013] According to some embodiments of the present invention, one of the first magnetic member and the second magnetic member is a permanent magnet, and the other of the first magnetic member and the second magnetic member is an electromagnet, which is powered on or off to selectively attract or repel the permanent magnet.

[0014] According to some embodiments of the utility model, the electrical device also includes: an air pressure sensing switch and a power supply device, one of the first magnetic part and the second magnetic part is an electromagnet, the air pressure sensing switch is connected between the power supply device and the electromagnet, and when the air pressure sensing switch senses that the pressure in the installation space reaches a preset pressure value, the air pressure sensing switch closes to enable the power supply device to supply power to the electromagnet.

[0015] According to some embodiments of the present invention, when the air pressure sensing switch senses that the pressure in the installation space is less than the preset pressure value, the air pressure sensing switch is turned off.

[0016] According to some embodiments of the utility model, the power supply device includes a control board and a battery, the control board and the battery are arranged in parallel, and the control board and the battery are both connected to the air pressure sensing switch.

[0017] According to some embodiments of the present invention, the air pressure sensing switch and the power supply device are both arranged in the installation space.

[0018] According to some embodiments of the present invention, an installation wall surface arranged opposite to the open end of the installation space is formed in the installation space, and the first magnetic component is installed on the installation wall surface.

[0019] According to some embodiments of the present invention, the box body has a mounting beam installed in the installation space, and the middle part of the box cover is connected to the mounting beam.

[0020] According to some embodiments of the present invention, the electrical device further comprises: a fixing member, wherein the fixing member is passed through a middle position of the box cover and connected to the mounting beam, so that the box cover is connected to the mounting beam.

[0021] The electric power system according to the embodiment of the utility model includes the above-mentioned electric device.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 It is a schematic diagram of the structure of the electrical device of the embodiment of the utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the box cover of the utility model embodiment;

[0026] Figure 3 It is a schematic diagram of the internal structure of the box body of the utility model embodiment;

[0027] Figure 4 yes Figure 3 The main view;

[0028] Figure 5 is a side view of an electrical device according to an embodiment of the utility model;

[0029] Figure 6 yes Figure 5 AA section view in.

[0030] Reference numerals:

[0031] Electrical device 100;

[0032] Box body 10; installation space 11; installation wall surface 111; installation beam 12;

[0033] Box cover 20;

[0034] Explosion-proof component 30; first magnetic component 31; electromagnet 311; second magnetic component 32; permanent magnet 322;

[0035] Air pressure sensing switch 40; control panel 41;

[0036] Power supply device 50; fixing member 60. DETAILED DESCRIPTION

[0037] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0038] Reference below Figure 1-Figure 6 The electrical device 100 and the power system according to the embodiment of the utility model are described. The electrical device 100 can be installed in various electrical equipments that need to be explosion-proof. The electrical device 100 can be a photovoltaic inverter, a motor, etc. This application takes the electrical device 100 as a photovoltaic inverter as an example for description.

[0039] The electrical device 100 includes: a box body 10, the box body 10 defines an installation space 11 with one end open, a box cover 20, the box cover 20 is arranged at the open end of the installation space 11, and the middle part of the box cover 20 is connected to the box body 10; an explosion-proof component 30, the explosion-proof component 30 includes a first magnetic component 31 and a second magnetic component 32, the first magnetic component 31 is arranged in the installation space 11, and the second magnetic component 32 is arranged on the surface of the box cover 20 close to the installation space 11 and close to the edge of the box cover 20. When the pressure in the installation space 11 reaches a preset pressure value, the first magnetic component 31 and the second magnetic component 32 cooperate to enable the box cover 20 to open the open end of the installation space 11.

[0040] The box body 10 may define an installation space 11 with one end open, the box body 10 may have six faces, and the installation space 11 may be open toward any one of the six faces, which is not limited here. The middle part of the box cover 20 is connected to the box body 10, for example: the middle part of the box cover 20 and the box body 10 may be bolted, or the middle part of the box cover 20 and the box body 10 may be snap-connected, but the utility model is not limited thereto, the middle part of the box cover 20 and the box body 10 may also be connected in other ways, as long as the middle part of the box cover 20 and the box body 10 are connected.

[0041] The box cover 20 is arranged at the open end of the installation space 11. The shape and size of the box cover 20 are adapted to the shape and size of the open surface of the box body 10, so that the box cover 20 can fit with the open end of the box body 10, which can prevent foreign objects from scratching the structure in the installation space 11, and can also prevent foreign objects from entering the installation space 11, thereby protecting the structure in the installation space 11.

[0042] The explosion-proof assembly 30 includes a first magnetic component 31 and a second magnetic component 32. For example, the first magnetic component 31 can be a magnetic component such as an electromagnet, and the second magnetic component 32 can be a magnetic component such as a permanent magnet, but the utility model is not limited thereto. The first magnetic component 31 and the second magnetic component 32 can also be other types of magnetic components, as long as the first magnetic component 31 and the second magnetic component 32 are both magnetic components. The first magnetic component 31 can be arranged in the installation space 11. For example, the first magnetic component 31 can be arranged at a corner position in the installation space 11, but the utility model is not limited thereto. The first magnetic component 31 can also be arranged at other positions in the installation space 11, as long as the first magnetic component 31 is arranged in the installation space 11.

[0043] The second magnetic member 32 is arranged on the surface of the box cover 20 close to the installation space 11, and the second magnetic member 32 is arranged close to the edge of the box cover 20, that is, when the box cover 20 covers the box body 10, the second magnetic member 32 is located in the installation space 11, and when the pressure in the box body 10 does not reach the preset pressure value, the box cover 20 fits with the box body 10, which can seal the electrical device 100 and meet the air tightness and waterproof requirements of the electrical device 100. When the pressure in the box body 10 reaches the preset pressure value, the first magnetic member 31 and the second magnetic member 32 can repel each other, and there is a gap between the box cover 20 and the box body 10, which can relieve pressure on the electrical device 100, avoid explosion of the electrical device 100, and improve the safety of the electrical device 100.

[0044] According to the electrical device 100 of the embodiment of the utility model, the first magnetic member 31 is arranged in the installation space 11, and the second magnetic member 32 is arranged on the surface of the box cover 20 close to the installation space 11 and close to the edge of the box cover 20. The box cover 20 is fitted with the box body 10, which can seal the electrical device 100 and meet the air tightness and waterproof requirements of the electrical device 100. When the first magnetic member 31 and the second magnetic member 32 repel each other, a gap is generated between the box cover 20 and the box body 10, which can relieve pressure on the electrical device 100, avoid explosion of the electrical device 100, and improve the safety of the electrical device 100.

[0045] Furthermore, the box body 10 of the electrical device 100 has a simple structure, which improves the mass production speed of the electrical device 100 and reduces the manufacturing cost of the electrical device 100 .

[0046] According to some embodiments of the present invention, Figure 2 and Figure 3 As shown, when the pressure in the installation space 11 is less than a preset pressure value, the first magnetic member 31 and the second magnetic member 32 attract each other so that the box cover 20 seals the open end of the installation space 11; and / or when the pressure in the installation space 11 reaches a preset pressure value, the first magnetic member 31 and the second magnetic member 32 repel each other so that the box cover 20 opens the open end of the installation space 11.

[0047] The first magnetic member 31 can selectively attract or repel the second magnetic member 32. Specifically, when the pressure in the box 10 is not less than a preset pressure value, the first magnetic member 31 and the second magnetic member 32 attract each other. When the first magnetic member 31 and the second magnetic member 32 attract each other, the box cover 20 can cover the open end of the installation space 11, thereby sealing the electrical device 100 and meeting the airtightness and waterproof requirements of the electrical device 100. Alternatively, when the pressure in the box 10 reaches a preset pressure value, the first magnetic member 31 and the second magnetic member 32 repel each other. When the first magnetic member 31 and the second magnetic member 32 repel each other, the box cover 20 can open the open end of the installation space 11, thereby relieving the pressure of the electrical device 100, preventing the electrical device 100 from exploding, and improving the safety of the electrical device 100. Alternatively, when the pressure in the box 10 is not less than a preset pressure value, the first magnetic component 31 and the second magnetic component 32 attract each other, and when the pressure in the box 10 reaches the preset pressure value, the first magnetic component 31 and the second magnetic component 32 repel each other, so that the electrical device 100 has both sealing and explosion-proof functions, thereby meeting the airtightness and waterproof requirements of the electrical device 100, and avoiding explosion of the electrical device 100, thereby improving the safety of the electrical device 100.

[0048] According to some embodiments of the present invention, Figure 2 and Figure 3 As shown, the electrical device 100 may further include an elastic connector. The elastic connector is elastically connected between the box body 10 and the box cover 20 so that the box cover 20 covers the open end of the installation space 11, and when the pressure in the installation space 11 is greater than a preset pressure value, the first magnetic member 31 and the second magnetic member 32 repel each other so that the box cover 20 opens the open end of the installation space 11.

[0049] Among them, the elastic connector can be an elastic connector such as a spring, and the elastic connector can be elastically connected between the box body 10 and the box cover 20 so that the box cover 20 covers the open end of the installation space 11. For example, the elastic connector and the box body 10 and the box cover 20 can be bonded, but the utility model is not limited thereto. The elastic connector and the box body 10 and the box cover 20 can also be connected in other ways, as long as the elastic connector is connected between the box body 10 and the box cover 20. And the elastic connector can make the box cover 20 cover the open end of the installation space 11. Specifically, when the elastic connector is elastically connected between the box body 10 and the box cover 20, the box cover 20 covers the open end of the installation space 11 by relying on the tension of the elastic connector. When the pressure in the installation space 11 is greater than the preset pressure value, the first magnetic member 31 and the second magnetic member 32 repel each other, so that the box cover 20 opens the open end of the installation space 11. Therefore, the electrical device 100 has both sealing and explosion-proof functions, thereby meeting the airtightness and waterproof requirements of the electrical device 100 , and preventing the electrical device 100 from exploding, thereby improving the safety of the electrical device 100 .

[0050] Alternatively, the elastic connecting member is compressed and connected between the box body 10 and the box cover 20, and the first magnetic member 31 and the second magnetic member 32 are attracted to each other so that the box cover 20 seals the open end of the installation space 11. When the pressure in the installation space 11 is greater than a preset pressure value, the current passing into the first magnetic member 31 and / or the second magnetic member 32 is reduced or closed so that the attraction force between the first magnetic member 31 and the second magnetic member 32 is smaller than the elastic force of the elastic connecting member.

[0051] Among them, the elastic connecting member can be an elastic connecting member such as a spring. When the elastic connecting member is compressed and connected between the box body 10 and the box cover 20, the box cover 20 can seal the open end of the installation space 11 by relying on the attraction between the first magnetic member 31 and the second magnetic member 32. When the pressure in the installation space 11 is greater than the preset pressure value, the current passing through the first magnetic member 31 or the second magnetic member 32 is reduced or closed, or the current passing through the first magnetic member 31 and the second magnetic member 32 is reduced or closed, so that the attraction between the first magnetic member 31 and the second magnetic member 32 is smaller than the elastic force of the elastic connecting member, and the box cover 20 relies on the elastic force of the elastic connecting member to seal the open end of the installation space 11, thereby improving the safety and reliability of the electrical device 100.

[0052] According to some embodiments of the present invention, Figure 2 and Figure 3 As shown, there can be multiple first magnetic members 31 and multiple second magnetic members 32 , the multiple first magnetic members 31 and the multiple second magnetic members 32 correspond to each other one by one, and the multiple second magnetic members 32 are arranged along the edge of the box cover 20 .

[0053] Among them, both the first magnetic member 31 and the second magnetic member 32 can be multiple, for example: the number of the first magnetic member 31 and the second magnetic member 32 can be two, three, four, etc., but the utility model is not limited to this, the number of the first magnetic member 31 and the second magnetic member 32 can also be other numbers, as long as the first magnetic member 31 and the second magnetic member 32 are multiple. And the multiple first magnetic members 31 and the second magnetic member 32 correspond one to one, that is, the number of the first magnetic member 31 and the second magnetic member 32 is the same. This application takes the example that the first magnetic member 31 and the second magnetic member 32 are both four, and the multiple second magnetic members 32 are arranged along the edge of the box cover 20, for example: the multiple second magnetic members 32 are located at the four corners of the box cover 20, but the utility model is not limited to this, as long as the multiple second magnetic members 32 are arranged along the edge of the box cover 20.

[0054] By arranging multiple first magnetic parts 31 and second magnetic parts 32 in a one-to-one correspondence, and the first magnetic parts 31 selectively attract or repel the second magnetic parts 32, when the multiple first magnetic parts 31 and the multiple second magnetic parts 32 attract each other, the box cover 20 and the box body 10 fit more closely, which can further seal the electrical device 100 and further meet the air tightness and waterproof requirements of the electrical device 100. When the multiple first magnetic parts 31 and the multiple second magnetic parts 32 repel each other, the gap between the box cover 20 and the box body 10 can be increased, and the pressure relief effect on the electrical device 100 can be achieved at a faster speed, thereby avoiding the explosion of the electrical device 100 and further improving the safety of the electrical device 100.

[0055] According to some embodiments of the present invention, Figure 2 As shown, the box cover 20 may have a plurality of corner areas, and a plurality of second magnetic members 32 are respectively disposed in the plurality of corner areas.

[0056] Among them, the box cover 20 can have multiple corner areas, and the multiple second magnetic parts 32 are respectively arranged in the multiple corner areas. Specifically, a second magnetic part 32 is provided in a corner area of ​​the box cover 20. With such a configuration, when the multiple first magnetic parts 31 and the multiple second magnetic parts 32 attract each other, the box cover 20 and the box body 10 fit more closely, which can further seal the electrical device 100 and further meet the air tightness and waterproof requirements of the electrical device 100. When the multiple first magnetic parts 31 and the multiple second magnetic parts 32 repel each other, the gap between the box cover 20 and the box body 10 can be increased, and the pressure relief effect on the electrical device 100 can be achieved at a faster speed, thereby avoiding the explosion of the electrical device 100 and further improving the safety of the electrical device 100.

[0057] According to some embodiments of the present invention, Figure 2 and Figure 3As shown, one of the first magnetic member 31 and the second magnetic member 32 can be a permanent magnet 322, and the other of the first magnetic member 31 and the second magnetic member 32 can be an electromagnet 311, which is powered on or off to selectively attract or repel the permanent magnet 322.

[0058] Among them, one of the first magnetic member 31 and the second magnetic member 32 can be a permanent magnet 322, and the other of the first magnetic member 31 and the second magnetic member 32 is an electromagnet 311. The present application takes the first magnetic member 31 as the electromagnet 311 and the second magnetic member 32 as the permanent magnet 322 as an example for explanation. The electromagnet 311 is powered on or off to make the electromagnet 311 selectively attract or repel the permanent magnet 322. Specifically, when the electromagnet 311 is not powered on, the electromagnet 311 and the permanent magnet 322 are attracted to each other. When the box cover 20 is in close contact with the box body 10, the electrical device 100 can be sealed to meet the air tightness and waterproof requirements of the electrical device 100. When the electromagnet 311 is energized, the electromagnet 311 and the permanent magnet 322 repel each other. At this time, the fitting force between the multiple corner areas of the box cover 20 and the box body 10 is reduced to generate a gap, thereby releasing the internal pressure of the electrical device 100, thereby relieving the pressure of the electrical device 100, avoiding the explosion of the electrical device 100, and improving the safety of the electrical device 100.

[0059] According to some embodiments of the present invention, Figure 3 As shown, the electrical device 100 may also include: an air pressure sensing switch 40 and a power supply device 50, one of the first magnetic member 31 and the second magnetic member 32 is an electromagnet 311, the air pressure sensing switch 40 is connected between the power supply device 50 and the electromagnet 311, and when the air pressure sensing switch 40 senses that the pressure in the installation space 11 reaches a preset pressure value, the air pressure sensing switch 40 closes to enable the power supply device 50 to supply power to the electromagnet 311.

[0060] Among them, the air pressure sensing switch 40 is connected between the power supply device 50 and the electromagnet 311. The air pressure sensing switch 40, the power supply device 50 and the electromagnet 311 can be connected through a wiring harness to achieve electrical connection. When the air pressure sensing switch 40 senses that the pressure in the installation space 11 reaches a preset pressure value, the air pressure sensing switch 40 is closed, and the air pressure sensing switch 40, the power supply device 50 and the electromagnet 311 are electrically connected, so that the power supply device 50 supplies power to the electromagnet 311, thereby causing the electromagnet 311 and the permanent magnet 322 to repel each other. At this time, the fitting force between the multiple corner areas of the box cover 20 and the box body 10 is reduced to produce a gap, thereby releasing the internal pressure of the electrical device 100, thereby being able to relieve pressure on the electrical device 100, avoiding explosion of the electrical device 100, and improving the safety of the electrical device 100.

[0061] According to some embodiments of the present invention, when the air pressure sensing switch 40 senses that the pressure in the installation space 11 is less than a preset pressure value, the air pressure sensing switch is turned off.

[0062] Among them, when the air pressure sensing switch 40 senses that the pressure in the installation space 11 is lower than the preset pressure value, the air pressure sensing switch is disconnected, that is, the air pressure sensing switch 40 is disconnected from the electromagnet 311, so that the power supply device 50 cannot supply power to the electromagnet 311, and then the electromagnet 311 and the permanent magnet 322 are attracted to each other. At this time, the box cover 20 fits with the box body 10, which can seal the electrical device 100 and meet the air tightness and waterproof requirements of the electrical device 100.

[0063] According to some embodiments of the present invention, Figure 3 As shown, the power supply device 50 may include a control board 41 and a battery. The control board 41 and the battery are arranged in parallel, and both the control board 41 and the battery are connected to the air pressure sensing switch 40 .

[0064] Among them, the power supply device 50 may include a control board 41 and a battery, the control board 41 can be connected to the power system, the battery can be an independent power supply system, the control board 41 and the battery are arranged in parallel, and the control board 41 and the battery are both connected to the air pressure sensing switch 40, the control board 41, the battery and the air pressure sensing switch 40 can be connected by a wiring harness, so as to realize the electrical connection between the control board 41, the battery and the air pressure sensing switch 40, and the control board 41 and the battery can both provide power for the air pressure sensing switch 40.

[0065] Specifically, when the power system operates normally, the air pressure sensing switch 40 can be powered by the control board 41 . It can be explained that the control board 41 can be controlled and adjusted by software, thereby improving the working flexibility of the electrical device 100 .

[0066] When the power system is turned off, the control board 41 cannot supply power to the air pressure sensing switch 40. At this time, the battery can supply power to the air pressure sensing switch 40, which can prevent the air pressure sensing switch 40 from failing when the box 10 fails and loses power, thereby ensuring that the air pressure sensing switch 40 can work normally, thereby improving the working stability of the electrical device 100.

[0067] According to some embodiments of the present invention, Figure 3 As shown, the air pressure sensing switch 40 and the power supply device 50 can both be disposed in the installation space 11 .

[0068] Among them, the air pressure sensing switch 40 and the power supply device 50 can be arranged in the installation space 11. Such a setting can prevent the air pressure sensing switch 40 and the power supply device 50 from being scratched by external components of the box 10, thereby improving the safety and service life of the electrical device 100. In addition, the air pressure sensing switch 40 and the power supply device 50 are both arranged in the installation space 11, which can also reduce the space occupied by the electrical device 100 in the machine, reduce the impact of the electrical device 100 on the shape and appearance of the machine, and improve the applicability of the electrical device 100. For example, the electrical device 100 can cover all household appliances, and the inverter is similar to an explosion-proof setting.

[0069] According to some embodiments of the present invention, Figure 3 As shown, an installation wall surface 111 arranged opposite to the open end of the installation space 11 may be formed in the installation space 11 , and the first magnetic member 31 is installed on the installation wall surface 111 .

[0070] Among them, a mounting wall 111 arranged opposite to the open end of the mounting space 11 may be formed in the mounting space 11, and the mounting wall 111 may be arranged along the inner circumferential wall of the box body 10. The first magnetic component 31 is mounted on the mounting wall 111, and the first magnetic component 31 and the mounting wall 111 may be bonded, or the first magnetic component 31 and the mounting wall 111 may be bolted, or the first magnetic component 31 and the mounting wall 111 may be connected in other ways, but the utility model is not limited thereto, as long as the first magnetic component 31 is mounted on the mounting wall 111. Therefore, the first magnetic component 31 is mounted on the mounting wall 111 in the mounting space 11, which can prevent the external components of the box body 10 from scratching the first magnetic component 31, thereby improving the safety and service life of the electrical device 100.

[0071] According to some embodiments of the present invention, Figure 6 As shown, the box body 10 has a mounting beam 12 installed in the mounting space 11 , and the middle portion of the box cover 20 is connected to the mounting beam 12 .

[0072] The middle part of the box cover 20 is connected to the mounting beam 12, for example, the box cover 20 and the mounting beam 12 can be fixedly connected by bolts, or the box cover 20 and the mounting beam 12 can be connected by clamping, but the utility model is not limited thereto, and the box cover 20 and the mounting beam 12 can also be connected by other means, as long as the box cover 20 is connected to the mounting beam 12. The middle part of the box cover 20 is connected to the mounting beam 12, which can position the box cover 20 and prevent the box cover 20 from falling from the box body 10, and the mounting beam 12 can also support the box cover 20, thereby improving the safety of the electrical device 100.

[0073] According to some embodiments of the present invention, Figure 6As shown, the electrical device 100 may further include: a fixing member 60 , which is disposed through the middle of the box cover 20 and connected to the mounting beam 12 , so that the box cover 20 is connected to the mounting beam 12 .

[0074] The electrical device 100 may further include a fixing member 60, for example, the fixing member 60 may be a fixing structure such as a screw, a bolt, a pin, etc., but the present invention is not limited thereto, and the fixing member 60 may also be other fixing structures, as long as the fixing member 60 can play a fixing role. The fixing member 60 may be arranged in the middle position of the box cover 20 and connected to the mounting beam 12, for example, a threaded hole may be formed on the mounting beam 12, or a pin hole may be formed on the mounting beam 12, but the present invention is not limited thereto, as long as a structure that can be assembled with the fixing member 60 may be formed on the mounting beam 12. Thus, the fixing member 60 may be arranged in the middle position of the box cover 20 and connected to the mounting beam 12, so that the box cover 20 is connected to the mounting beam 12, and the box cover 20 can be fixed on the mounting beam 12, and the mounting beam 12 is located in the box body 10, so that the box cover 20 fits with the box body 10, plays a sealing role on the electrical device 100, and meets the airtightness and waterproof requirements of the electrical device 100.

[0075] According to the electric power system of the embodiment of the utility model, the electric device 100 of the above embodiment can be sealed to meet the air tightness and waterproof requirements of the electric device 100, and can also relieve pressure on the electric device 100 to avoid explosion of the electric device 100, thereby improving the safety of the electric device 100.

[0076] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0077] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An electrical device, characterized in that: include: A box body, wherein the box body defines an installation space with one end open; A box cover, which is arranged at the open end of the installation space, and the middle part of the box cover is connected to the box body; An explosion-proof component, the explosion-proof component includes a first magnetic component and a second magnetic component, the first magnetic component is arranged in the installation space, and the second magnetic component is arranged on the surface of the box cover close to the installation space and close to the edge of the box cover. When the pressure in the installation space reaches a preset pressure value, the first magnetic component and the second magnetic component cooperate to enable the box cover to open the open end of the installation space.

2. The electrical device according to claim 1, characterized in that When the pressure in the installation space is less than the preset pressure value, the first magnetic member and the second magnetic member attract each other so that the box cover seals the open end of the installation space; and / or When the pressure in the installation space reaches the preset pressure value, the first magnetic member and the second magnetic member repel each other so that the box cover opens the open end of the installation space.

3. The electrical device according to claim 1, characterized in that Also includes: Elastic connector; The elastic connecting member is elastically connected between the box body and the box cover so that the box cover seals the open end of the installation space, and when the pressure in the installation space is greater than the preset pressure value, the first magnetic member and the second magnetic member repel each other so that the box cover opens the open end of the installation space; or The elastic connecting member is compressed and connected between the box body and the box cover, the first magnetic member and the second magnetic member attract each other so that the box cover seals the open end of the installation space, and when the pressure in the installation space is greater than the preset pressure value, the current passing into the first magnetic member and / or the second magnetic member is reduced or closed so that the attraction force between the first magnetic member and the second magnetic member is smaller than the elastic force of the elastic connecting member.

4. The electrical device according to any one of claims 1 to 3, characterized in that: There are multiple first magnetic members and multiple second magnetic members, and the multiple first magnetic members correspond to the multiple second magnetic members one by one. The multiple second magnetic members are arranged along the edge of the box cover.

5. The electrical device according to claim 4, characterized in that The box cover has a plurality of corner areas, and a plurality of the second magnetic members are respectively arranged in the plurality of corner areas.

6. The electrical device according to any one of claims 1 to 3, characterized in that: One of the first magnetic member and the second magnetic member is a permanent magnet, and the other of the first magnetic member and the second magnetic member is an electromagnet, which is powered on or off to selectively attract or repel the permanent magnet.

7. The electrical device according to any one of claims 1 to 3, characterized in that: Also includes: An air pressure sensing switch and a power supply device, wherein one of the first magnetic part and the second magnetic part is an electromagnet, and the air pressure sensing switch is connected between the power supply device and the electromagnet. When the air pressure sensing switch senses that the pressure in the installation space reaches a preset pressure value, the air pressure sensing switch closes so that the power supply device supplies power to the electromagnet.

8. The electrical device according to claim 7, characterized in that When the air pressure sensing switch senses that the pressure in the installation space is less than the preset pressure value, the air pressure sensing switch is turned off.

9. The electrical device according to claim 7, characterized in that: The power supply device comprises a control board and a battery, the control board and the battery are arranged in parallel, and both the control board and the battery are connected to the air pressure sensing switch.

10. The electrical device according to claim 7, characterized in that The air pressure sensing switch and the power supply device are both arranged in the installation space.

11. The electrical device according to any one of claims 1 to 3, characterized in that: An installation wall surface is formed in the installation space and is arranged opposite to the open end of the installation space. The first magnetic component is installed on the installation wall surface.

12. The electrical device according to any one of claims 1 to 3, characterized in that: The box body has a mounting beam installed in the installation space, and the middle part of the box cover is connected to the mounting beam.

13. The electrical device according to claim 12, characterized in that Also includes: A fixing piece is arranged through the middle position of the box cover and is connected to the mounting beam, so that the box cover is connected to the mounting beam.

14. A power system, characterized in that: Comprising an electrical device according to any one of claims 1-13.

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