Multifunctional combined electric appliance easy to maintain

Abstract

The invention discloses a multifunctional combined electric appliance easy to maintain, which comprises a switch unit and an electric appliance accessory integration unit, and the switch unit and the electric appliance accessory integration unit are combined into a whole side by side. The electric appliance accessory integration unit comprises a plurality of electric appliance function modules, the plurality of electric appliance function modules at least comprise pre-charging modules, the pre-charging modules are fixedly installed on an installation sliding plate and located in an inner cavity of the front face of the electric appliance cabinet, and the installation sliding plate is installed on a sliding way in the inner cavity of the front face of the electric appliance cabinet and can slide. The switch module and the electric appliance accessory module are respectively combined and integrated and then combined into a whole, the modules are mutually independent, the modules can be respectively maintained, especially the electric appliance cabinet module can be frontally maintained, and the cost is saved.

Description

Technical Field

[0001] The present invention belongs to the technical field of switches, and more specifically, it relates to a multi-functional combined electrical appliance that is easy to maintain. Background Art

[0002] With the development of DC power systems such as photovoltaic, energy storage, rail transit, and data centers, the application of switches in DC systems has become increasingly widespread. In order to increase the operating voltage and breaking capacity of switches in DC power systems, in the prior art, switches are usually connected to various electrical function accessories in a circuit. Chinese Patent 202211294684.1 discloses an electric switch with a pre-charging function. The electric switch includes an electric switch housing. Among them, the electric switch includes an electric switch drive mechanism, a pre-charge circuit switch, and a main circuit switch accommodated in the internal space defined by the electric switch housing; the pre-charge circuit switch is arranged in the pre-charge circuit and configured to be able to connect and disconnect the pre-charge circuit; the main circuit switch is arranged in the main circuit and configured to be able to connect and disconnect the main circuit; the pre-charge circuit is connected in parallel with the main circuit; the pre-charge circuit and the main circuit connected in parallel are connected in series with the energy storage unit to be charged; the electric switch drive mechanism is arranged to drive the main circuit switch and the pre-charge circuit switch. This electric switch connects the pre-charge circuit containing the battery pack to the main circuit of the switch through a mechanical structure to form an electric switch with a pre-charging function. This electric switch integrates the pre-charge circuit into the main circuit, with a complex structure. Once a fault occurs in the pre-charge circuit, the entire switch unit needs to be disassembled for repair, with a high repair difficulty, a large number of parts, a high product cost, and it is difficult to combine more functions with the switch, resulting in limited functional expandability of the switch. Summary of the Invention

[0003] Aiming at the defects of the existing combined electrical appliance with a pre-charging function, such as complex structure, difficult wiring, high repair difficulty, large number of parts, and high product cost, the purpose of the present invention is to provide a multi-functional combined electrical appliance that is easy to maintain. The switch module and the electrical accessory module are respectively combined and integrated and then merged into a whole, which are independent of each other and can be maintained separately, especially the electrical cabinet module can be maintained from the front, saving costs.

[0004] Technical Solution

[0005] To achieve the above technical purpose, the present invention provides a multi-functional combined electrical appliance that is easy to maintain, characterized in that: it includes a switch unit and an electrical accessory integration unit, and the switch unit and the electrical accessory integration unit are combined side by side into a whole;

[0006] The electrical accessory integration unit includes several electrical function modules, and the several electrical function modules are integrally installed at corresponding positions in the electrical cabinet and then installed on one side of the switch unit after being formed into a whole;

[0007] The several electrical function modules at least include a pre-charge module, and the pre-charge module is fixedly installed on an installation slide plate located in the inner cavity of the front of the electrical cabinet, and the installation slide plate is installed on a slideway in the inner cavity of the front of the electrical cabinet and can slide.

[0008] In one embodiment, the switch unit and the electrical accessory integration unit are integrated or split.

[0009] In one embodiment, the switch unit at least includes a frame circuit breaker or a frame disconnect switch and a fuse, and the frame circuit breaker or the frame disconnect switch and the fuse are assembled side by side.

[0010] In one embodiment, the several electrical function modules are integrally installed at corresponding positions in the electrical cabinet and then installed beside the frame circuit breaker or the frame disconnect switch in the switch unit after being formed into a whole.

[0011] In one embodiment, the pre-charge module includes a pre-charge module one and a pre-charge module two, and the pre-charge module one and the pre-charge module two are fixedly installed on corresponding installation slide plate one and installation slide plate two in the installation slide plate.

[0012] Further, the pre-charge module one is fixedly installed on the installation slide plate one at the upper part of the inner cavity of the front of the electrical cabinet, and the pre-charge module two is fixedly installed on the installation slide plate two, beside the pre-charge module one at the upper part of the inner cavity of the front of the electrical cabinet.

[0013] In one embodiment, the several electrical function modules further include a surge module or / and a discharge module.

[0014] Further, the surge module is installed in the cavity at the back of the electrical cabinet.

[0015] In one embodiment, the discharge module includes at least one discharge relay, and the discharge relay is arranged in the inner cavity of the front of the electrical cabinet.

[0016] Further, the discharge relay is arranged in the inner cavity of the front of the electrical cabinet, on the installation slide plate three, below the pre-charge module.

[0017] Further, the pre-charge module includes several pre-charge relays, and the several pre-charge relays are arranged side by side.

[0018] In one embodiment, a backup fuse is installed in the inner cavity of the front of the electrical cabinet.

[0019] Further, the backup fuse is installed on the rear side of the inner cavity of the front of the electrical cabinet, below the pre-charge module 1 and to the right of the discharge relay.

[0020] In one of the embodiments, the pre-charge resistor and the discharge resistor are installed side by side below the discharge relay and extend from the inner cavity of the front of the electrical cabinet into the cavity of the back of the electrical cabinet and are below the surge module.

[0021] Advantageous Effects

[0022] A multi-functional combined electrical appliance that is easy to maintain provided by the present invention includes a switch unit and an electrical accessory integration unit. The switch unit and the electrical accessory integration unit are combined side by side into a whole; the electrical accessory integration unit includes several electrical function modules, and the several electrical function modules at least include a pre-charge module. The pre-charge module is fixedly installed on an installation slide plate in the inner cavity of the front of the electrical cabinet, and the installation slide plate is installed on a slideway in the inner cavity of the front of the electrical cabinet and can slide. The switch module and the electrical accessory module are respectively combined and integrated and then merged into a whole, and are independent of each other, and the modules can be maintained separately, especially the electrical cabinet module can be maintained from the front, saving costs. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0024] Attached Figure 1 is a front three-dimensional structural schematic diagram of the combined electrical appliance in the embodiment of the present invention;

[0025] Attached Figure 2 is a back three-dimensional structural schematic diagram of the combined electrical appliance in the embodiment of the present invention;

[0026] Attached Figure 3 is the front view of the combined electrical appliance in the embodiment of the present invention;

[0027] Attached Figure 4 is the rear view of the combined electrical appliance in the embodiment of the present invention;

[0028] Attached Figure 5 is the installation schematic diagram of the secondary terminal in the embodiment of the present invention. Detailed Embodiments

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, rather than all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of this application.

[0030] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or there can also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the description of this application are only for the purpose of illustration and do not represent the only implementation.

[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0032] In this application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can be that the first feature is in direct contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature has a lower horizontal height than the second feature.

[0033] Unless otherwise defined, all technical and scientific terms used in the description of this application have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the description of this application are only for the purpose of describing specific implementations and are not intended to limit this application. The term "and / or" used in the description of this application includes any and all combinations of one or more of the related listed items.

[0034] Embodiment

[0035] As shown in the attached Figure 1As shown in the figure, a multi-functional combined electrical appliance that is easy to maintain, which includes a switch unit 100 and an electrical accessory integration unit 200. The switch unit 100 and the electrical accessory integration unit 200 are an integrated type in which all functional components are installed together or a split type installed in different cabinets. In this embodiment, the switch unit 100 and the electrical accessory integration unit 200 are of the split type in which all functional components are installed in different cabinets. The switch unit 100 and the electrical accessory integration unit 200 are combined side by side into a whole and preferably installed on the same bottom plate 220; the switch unit 100 at least includes a frame circuit breaker or a frame disconnect switch 110 and a fuse 120, and the frame circuit breaker or the frame disconnect switch 110 and the fuse 120 are combined and installed together side by side. The electrical accessory integration unit 200 includes a number of electrical function modules, and the number of electrical function modules are integrally installed at corresponding positions in the electrical cabinet 201 and then installed on one side of the switch unit 100; specifically, the number of electrical function modules are integrally installed at corresponding positions in the electrical cabinet 201 and then installed beside the frame circuit breaker or the frame disconnect switch 110 in the switch unit 100. The number of electrical function modules at least includes a precharge module 210, and the precharge module 210 is fixedly installed on an installation slide plate 211 in the front inner cavity 202 of the electrical cabinet 201. The installation slide plate 211 is installed on a slideway 212 in the front inner cavity 202 of the electrical cabinet 201 and can slide, where the slideway 212 can be a chute or a guide rail, which is matched according to the actual installation position.

[0036] As shown in the attached Figure 1 and 3 the detailed structure shown: The precharge module 210 includes a precharge module one 210a and a precharge module two 210b. The precharge module one 210a and the precharge module two 210b are fixedly installed on corresponding installation slide plate one 211a and installation slide plate two 211b in the installation slide plate 211. The precharge module one 210a is fixedly installed on the installation slide plate one 211a at the upper part of the front inner cavity 202 of the electrical cabinet 201, and the precharge module two 210b is fixedly installed on the installation slide plate two 211b at the upper part of the front inner cavity 202 of the electrical cabinet 201 beside the precharge module one 210a. In this embodiment, the installation slide plate one 211a and the installation slide plate two 211b are integrated. It should be noted that the installation positions of the precharge module one 210a and the precharge module two 210b can be interchanged according to actual installation needs.

[0037] As shown in the attached Figure 1 and 3As shown, the several electrical function modules further include a surge module 230 and / or a discharge module 240. The surge module 230 is mounted in the back cavity 203 of the electrical cabinet 201. The discharge module 240 includes at least one discharge relay 241, and the discharge relay 241 is arranged in the front inner cavity 202 of the electrical cabinet 201. Preferably, in this embodiment, the discharge relay 241 is arranged on the mounting slide plate three 211c in the front inner cavity 202 of the electrical cabinet 201 and is below the pre-charge module (210). The pre-charge module 210 includes several pre-charge relays 213, and the several pre-charge relays 213 are arranged side by side. Among them, the installation positions of the several pre-charge relays 213 and the discharge relay 241 can be interchanged according to actual installation needs. The backup fuse 250 used in conjunction with the surge module 230 is mounted on the rear side 204 of the front inner cavity 202 of the electrical cabinet 201, below the pre-charge module one 210a and to the right of the discharge relay 241. Relays and backup fuses are all vulnerable parts. After adopting this structure, once they are severely damaged, they are easy to replace, especially the relays. As attached Figure 5 As shown, the primary circuit wiring is all connected to the primary wiring terminal 270. In case of a fault, first pull out the plug of the primary wiring terminal and the plug of the secondary terminal 280, and then pull out the relay mounting plate to achieve replacement. As attached Figure 2 and 4 As shown, the pre-charge resistor 260 and the discharge resistor 261 are arranged side by side below the discharge relay 241 and extend from the front inner cavity 202 of the electrical cabinet 201 into the back cavity 203 of the electrical cabinet 201 and are below the surge module 230. Further, the pre-charge module 210, the surge module 230, and the discharge module 240 can all be connected to the secondary terminal on the electrical cabinet 201 and then connected to the main circuit, or they can all be connected to the switch secondary terminal on the switch unit 100 and then connected to the main circuit.

[0038] A multifunctional combined electrical appliance that is easy to maintain provided by the present invention combines and integrates the switch module and the electrical accessory module respectively and then merges them into a whole, which are independent of each other, can maintain the modules separately, especially can perform front maintenance on the electrical cabinet module, saving costs.

[0039] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0040] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A multifunctional combination appliance that is easy to maintain, characterized in that: It comprises a switch unit (100) and an electrical appliance accessory integrated unit (200), wherein the switch unit (100) and the electrical appliance accessory integrated unit (200) are combined side by side into a whole; The electrical accessory integrated unit (200) comprises a plurality of electrical function modules, which are integrated and installed at corresponding positions in the electrical cabinet (201) to form a whole and then installed on one side of the switch unit (100); The plurality of electrical functional modules at least comprises a pre-charging module (210), wherein the pre-charging module (210) is fixedly mounted on a mounting slide plate (211) and is located in a front inner cavity (202) of the electrical cabinet (201), and the mounting slide plate (211) is mounted on a slideway (212) in the front inner cavity (202) of the electrical cabinet (201) and is capable of sliding.

2. The multifunctional combination electrical appliance that is easy to maintain as claimed in claim 1, characterized in that: The switch unit (100) and the electrical accessory integrated unit (200) are of an integrated type or a split type.

3. The multifunctional combined electrical appliance easy to maintain as claimed in claim 1, characterized in that: The switch unit (100) comprises at least a frame circuit breaker or a frame isolating switch (110) and a fuse (120), and the frame circuit breaker or the frame isolating switch (110) and the fuse (120) are assembled together in parallel.

4. The multifunctional combined electrical appliance easy to maintain as claimed in claim 1, characterized in that: The plurality of electrical function modules are integrated and installed at corresponding positions in the electrical cabinet (201) to form a whole, and then installed on one side of the frame circuit breaker or frame isolating switch (110) in the switch unit (100).

5. The multifunctional combined electrical appliance easy to maintain as claimed in claim 1, characterized in that: The pre-filling module (210) comprises a pre-filling module one (210a) and a pre-filling module two (210b), wherein the pre-filling module one (210a) and the pre-filling module two (210b) are fixedly mounted on corresponding mounting slide plate one (211a) and mounting slide plate two (211b) in the mounting slide plate (211).

6. The multifunctional combined electrical appliance easy to maintain as claimed in claim 5, characterized in that: The pre-charging module 1 (210a) is fixedly mounted on the mounting slide 1 (211a) and is located at the upper part of the front inner cavity (202) of the electrical cabinet (201); the pre-charging module 2 (210b) is fixedly mounted on the mounting slide 2 (211b) and is located at the upper part of the front inner cavity (202) of the electrical cabinet (201) and is next to the pre-charging module 1 (210a).

7. The multifunctional combined electrical appliance easy to maintain as claimed in claim 5, characterized in that: The plurality of electrical functional modules further include a surge module (230) and / or a discharge module (240).

8. The multifunctional combined electrical appliance easy to maintain as claimed in claim 7, characterized in that: The surge module (230) is installed in the back cavity (203) of the electrical cabinet (201).

9. The multifunctional combined electrical appliance easy to maintain as claimed in claim 7, characterized in that: The discharge module (240) comprises at least one discharge relay (241), and the discharge relay (241) is arranged in the front inner cavity (202) of the electrical cabinet (201).

10. The multifunctional combined electrical appliance easy to maintain as claimed in claim 9, characterized in that: The discharge relay (241) is arranged in the front inner cavity (202) of the electrical cabinet (201) on a third mounting slide plate (211c), and is located below the pre-charging module (210).

11. The multifunctional combined electrical appliance easy to maintain as claimed in claim 5, characterized in that: The pre-charging module (210) comprises a plurality of pre-charging relays (213), and the plurality of pre-charging relays (213) are arranged side by side.

12. The multifunctional combined electrical appliance easy to maintain as claimed in claim 1, characterized in that: The backup fuse (250) is installed in the front inner cavity (202) of the electrical cabinet (201).

13. The multifunctional combined electrical appliance easy to maintain as claimed in claim 12, characterized in that: The backup fuse (250) is mounted on the rear side (204) of the front inner cavity (202) of the electrical cabinet (201), and is located below the pre-charging module 1 (210a) and to the right of the discharge relay (241).

14. The multifunctional combined electrical appliance easy to maintain as claimed in claim 1, characterized in that: The pre-charging resistor (260) and the discharge resistor (261) are installed side by side below the discharge relay (241), extending from the front inner cavity (202) of the electrical cabinet (201) into the back cavity (203) of the electrical cabinet (201), and are located below the surge module (230).

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