Photovoltaic inverter and battery parallel operation device

Abstract

The utility model discloses a photovoltaic inverter and battery parallel operation device, which comprises a plurality of photovoltaic inverters and a plurality of batteries, the parallel operation device comprises a parallel operation box body with a protective cover, the parallel operation box body is internally provided with two confluence copper bars which are arranged at intervals, and the confluence copper bars are insulated and separated from the parallel operation box body; two opposite box walls of the parallel operation box body are respectively provided with two connecting windows which are arranged at an interval and are in one-to-one correspondence with the two confluence copper bars, each confluence copper bar is provided with two conducting columns which are in one-to-one correspondence with the box walls, each conducting column comprises a plurality of conducting hole positions which are linearly distributed at intervals, and any conducting hole position is provided with a detachable conducting bolt. According to the utility model, the requirement of blending parallel operation of a plurality of photovoltaic inverters and a plurality of batteries is met. The parallel operation is convenient, efficient and fast, and the parallel conduction is reliable and stable. The device is simple and ingenious in structure, fast and flexible to use, high in safety coefficient, small in occupied space and suitable for popularization and application.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of photovoltaic inverter and battery's parallel machine device, belong to the technical field of parallel machine connection. BACKGROUND

[0002] Inverter is a kind of power regulating device composed of semiconductor devices, mainly used to convert DC power into AC power, generally consisting of boost loop and inverter bridge loop. Boost loop boosts the DC voltage of solar cell to the DC voltage required by inverter output control. The inverter bridge loop converts the boosted DC voltage into the commonly used frequency AC voltage.

[0003] With the continuous development of energy storage field, there are many application scenarios with parallel machine demand, that is, the demand for parallel connection of several photovoltaic inverters and several batteries, and the number of parallel machines will increase with the demand. The traditional parallel machine adopts the way of bus connection, and the bus connector is designed according to the number of parallel machines. It generally has high integration, high price, difficult expansion, poor operation stability and other problems. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the above-mentioned problems of the prior art. In view of the problems of high price, difficult expansion and poor operation stability of traditional bus connector, a parallel machine device of photovoltaic inverter and battery is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A kind of parallel machine device of photovoltaic inverter and battery, including several photovoltaic inverters and several batteries, the parallel machine device includes parallel machine box body with protective cover, two spaced apart copper bars are provided in the parallel machine box body, the copper bar is insulated and separated from the parallel machine box body;

[0007] Two opposite box walls of the parallel machine box body are respectively provided with two spaced apart connection windows corresponding to the two copper bars, the copper bar is provided with two rows of through columns corresponding to the box wall, the through column includes a plurality of through holes distributed linearly, and a through bolt is detachably arranged in any through hole.

[0008] Preferably, two insulation support mechanisms for insulating and separating the copper bars are provided in the parallel machine box body, the four corner ends of the copper bar are respectively provided with adapter holes, the insulation support mechanism includes four insulation support columns corresponding to the adapter holes for supporting the copper bar suspended, and the free end of any insulation support column is provided with a screw rod end penetrating the adapter hole, and the screw rod end is provided with a locking nut.

[0009] Preferably, the connecting window is a strip slot window, and the horizontal ends of the strip slot window are respectively provided with arc-shaped parts.

[0010] Preferably, a protective frame is arranged on the connecting window.

[0011] Preferably, the protective cover is pivotally connected to the parallel machine box body, and a locking mechanism is arranged between the protective cover and the parallel machine box body.

[0012] Preferably, a locking edge is arranged on the parallel machine box body, and the protective cover is detachably connected to the locking edge through a fastening bolt.

[0013] Preferably, the photovoltaic inverter and the battery are respectively provided with a conductive connecting line for connecting with the busbar, and an electric connection pile is arranged on the free end of the conductive connecting line, and a conductive hole is arranged on the electric connection pile.

[0014] The beneficial effects of the utility model mainly reflect in:

[0015] 1. Satisfy the blending parallel operation demand of multiple photovoltaic inverters and multiple batteries.

[0016] 2. Parallel operation is convenient, efficient and quick, and parallel operation is reliable and stable.

[0017] 3. The structure is simple and ingenious, has the characteristics of quick and flexible use, high safety factor and small space occupation, and is suitable for popularization and application. DRAWINGS

[0018] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments made with reference to the accompanying drawings:

[0019] Figure 1 is a structural schematic view of a parallel operation device of a photovoltaic inverter and a battery.

[0020] Figure 2 is an exploded structural schematic view of a parallel operation device of a photovoltaic inverter and a battery.

[0021] Figure 3 is a closed state structural schematic view of a parallel operation device of a photovoltaic inverter and a battery.

[0022] Figure 4 is a use state structural schematic view of a parallel operation device of a photovoltaic inverter and a battery. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] The application will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related utility model, and not to limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the parts related to the utility model are shown in the drawings. It should be noted that, in the case of no conflict, the embodiments in the application and the features in the embodiments can be combined with each other.

[0025] The utility model provides a kind of photovoltaic inverter and battery's parallel machine device, as shown in Figures 1 to 4 It includes several photovoltaic inverters 100 and several batteries 200.

[0026] Parallel machine device includes the parallel machine box body 1 with protective cover 10, two spaced apart busbars 2 are provided in parallel machine box body 1, and busbar 2 is insulated and separated from parallel machine box body 1.

[0027] Two opposite box walls of parallel machine box body 1 are respectively provided with two spaced apart connection windows 3 corresponding to two busbars, and two busbars are provided with two rows of through holes 21 corresponding to box wall, and through hole 21 includes linearly spaced several through holes 22, and any through hole 22 is provided with detachably arranged through bolt 4.

[0028] Specific implementation process and principle explanation:

[0029] Photovoltaic inverter 100 and battery 200 are provided with positive and negative electrode through connection adapter, when carrying out photovoltaic inverter and battery parallel machine operation, as shown in Figure 4 Several photovoltaic inverters 100 are located at one side of parallel machine box body 1, and several batteries 200 are located at the other side of parallel machine box body 1.

[0030] After the positive polarity conduction adapter wire of several photovoltaic inverters 100 is passed through one connection opening window 3 and is locked on the conduction hole position 22 of the bus copper bar 2 through the conduction bolt 4, the negative polarity conduction adapter wire is passed through another connection opening window 3 and is locked on the conduction hole position 22 of the bus copper bar 2 through the conduction bolt 4. Through the design of several conduction hole positions 22, the parallel connection requirements of multiple photovoltaic inverters 100 are met. The connection mode of the battery is similar, so that one bus copper bar realizes the positive polarity conduction of the photovoltaic inverter 100 and the battery 200, and the other bus copper bar realizes the negative polarity conduction.

[0031] When the conduction adapter is completed, the protective cover 10 is covered and protected.

[0032] In one specific embodiment, two insulation support mechanisms 5 for insulating and separating the loaded bus copper bars are arranged in the parallel connection box body 1, the four corner ends of the bus copper bar are respectively provided with adapter holes 20, the insulation support mechanism 5 includes four insulation support columns 50 arranged one-to-one with the adapter holes for supporting the bus copper bar to be suspended, the free end of any insulation support column 50 is provided with a threaded end 51 penetrating the adapter hole, and the threaded end is provided with a locking nut 52.

[0033] Specifically, the threaded end 51 penetrates the adapter hole 20 to realize the penetration, the insulation support column 50 realizes the suspended support of the bus copper bar, and then the locking nut 52 is screwed with the threaded end 51 to lock the bus copper bar. The loaded and locked bus copper bar is stable and reliable, the insulation protection is reliable, and the assembly and disassembly are convenient, fast, efficient.

[0034] In one specific embodiment, the connection opening window 3 is a strip slot window, and the horizontal ends of the strip slot window are respectively provided with arc-shaped parts 30.

[0035] As shown in Figure 1 Through the design of the strip slot window, the whole column regularity after the conduction adapter wire is connected with the conduction hole position 22 on the conduction column 21 is met, and the arc-shaped part 30 can provide arc-shaped contact and will not damage the conduction adapter wire.

[0036] In one specific embodiment, the connection opening window 3 is provided with a protective frame edge 300.

[0037] The protective frame edge 300 generally adopts a flexible elastic body with flame retardation, so as to provide flexible contact protection, the safety of the conduction adapter wire is higher, and the situation of rubbing and damaging is avoided.

[0038] In one specific embodiment, the protective cover 10 is pivotally connected to the parallel connection box body 1, and a locking mechanism 6 is arranged between the protective cover and the parallel connection box body. The parallel connection box body 1 is provided with a locking edge 61, and the protective cover and the locking edge are detachably connected through a fastening bolt 62.

[0039] That is, the locking and dismounting between the locking along 61 and the protective cover 10 can be realized by the fastening bolt 62, the opening operation is facilitated, and the locking protection requirement is met.

[0040] In one specific embodiment, the photovoltaic inverter and the battery are respectively provided with a conductive adapter wire 7 for conductive connection with the bus copper bar, and the free end of the conductive adapter wire 7 is provided with an electric connection stake 8, and the electric connection stake is provided with a conductive hole slot 9 for cooperation with the conductive hole position.

[0041] After the conductive hole slot 9 on the electric connection stake is positioned with the conductive hole position on the bus copper bar, the conductive bolt 4 is penetrated and locked, and the conductive stability requirement is met, and the installation and dismounting is convenient and fast.

[0042] It can be found from the above description that the parallel machine device of the photovoltaic inverter and the battery meets the blending parallel machine requirement of multiple photovoltaic inverters and multiple batteries. The parallel machine operation is convenient, efficient and fast, the parallel machine conductive is reliable and stable, the structure is simple and ingenious, has the characteristics of quick and flexible use, high safety factor, small space occupation, and is suitable for popularization and application.

[0043] The term "comprising" or any other similar word is intended to encompass non-exclusive inclusion, so that the process, method, article or equipment / device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes the elements inherent to the process, method, article or equipment / device.

[0044] So far, the technical scheme of the utility model has been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the utility model is obviously not limited to these specific embodiments. Without deviating from the principles of the utility model, those skilled in the art can make equivalent changes or replacements to related technical features, and the technical scheme after the changes or replacements will fall within the protection scope of the utility model.

Claims

1. A parallel operation device of photovoltaic inverter and battery, comprising a plurality of photovoltaic inverters and a plurality of batteries, characterized in that: the parallel operation device comprises a parallel operation box body provided with a protective cover, two copper busbars are arranged in the parallel operation box body, and the copper busbars are insulated and separated from the parallel operation box body; two connecting windows corresponding to the two copper busbars are arranged on the two opposite walls of the parallel operation box body, two rows of conductive columns corresponding to the walls are arranged on the copper busbars, the conductive columns comprise a plurality of conductive hole positions arranged linearly and spaced apart, and a conductive bolt is detachably arranged on any conductive hole position.

2. The parallel operation device of photovoltaic inverter and battery according to claim 1, characterized in that: two insulation support mechanisms for insulating and separating the copper busbars are arranged in the parallel operation box body, four corners of the copper busbars are respectively provided with matching holes, the insulation support mechanism comprises four insulation support columns corresponding to the matching holes and arranged for supporting the copper busbars to be suspended, a screw rod end penetrating through the matching hole is arranged at a free end of any insulation support column, and a locking nut is arranged on the screw rod end.

3. The parallel operation device of photovoltaic inverter and battery according to claim 1, characterized in that: the connecting window is a slot window, and an arc-shaped part is arranged at the horizontal end of the slot window.

4. The parallel operation device of photovoltaic inverter and battery according to claim 3, characterized in that: a protective frame is arranged on the connecting window.

5. The parallel operation device of photovoltaic inverter and battery according to any one of claims 1-4, characterized in that: the protective cover is pivotally connected to the parallel operation box body, and a locking mechanism is arranged between the protective cover and the parallel operation box body.

6. The parallel operation device of photovoltaic inverter and battery according to claim 5, characterized in that: a locking edge is arranged on the parallel operation box body, and the protective cover and the locking edge are detachably connected by a fastening bolt.

7. The parallel operation device of photovoltaic inverter and battery according to claim 1, characterized in that: the photovoltaic inverter and the battery are respectively provided with a conductive connecting line for conductive connection with the copper busbar, an electric pile is arranged at a free end of the conductive connecting line, and a conductive hole groove for cooperating with the conductive hole position is arranged on the electric pile.

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