Modular power converter, power conversion equipment and photovoltaic system

Abstract

The utility model discloses a modularized power converter, power conversion equipment and a photovoltaic system. The modular power converter comprises functional devices and a plurality of electrical box bodies, the plurality of electrical box bodies are connected in series, and the functional devices are arranged in the plurality of electrical box bodies in a scattered mode. The modularized power converter provided by the utility model comprises the plurality of electrical box bodies, the plurality of electrical box bodies are connected in series, and the functional devices are dispersedly arranged in the plurality of electrical box bodies, so that each electrical box body and the functional devices arranged in the electrical box body form an independent module; the split modular design solves the problems that in the prior art, due to the fact that a whole machine is large in weight and size, installation and maintenance are not easy, and the like, and installation convenience and maintenance convenience of the power converter are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power converters, in particular to a modular power converter, a power conversion device and a photovoltaic system. Background Art

[0002] In the prior art, power converters usually place components such as electronic devices, magnetic units and heat dissipation systems in an electrical box. As the power level of the inverter increases, the size and weight of the power converter increase, reducing the convenience of installation and maintenance of the power converter.

[0003] Therefore, how to improve the convenience of installation and maintenance of power converters is a technical problem that technical personnel in this field currently need to solve. Utility Model Content

[0004] In view of this, an object of the present invention is to provide a modular power converter to improve the convenience of installation and maintenance of the power converter.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A modular power converter comprises a functional device and a plurality of electrical boxes, wherein the plurality of electrical boxes are connected in series and the functional device is dispersedly arranged in the plurality of electrical boxes.

[0007] Optionally, in the above-mentioned modular power converter, the number of the functional devices is multiple, and the multiple functional devices are independently arranged in different electrical boxes, and the function of each functional device is different, so as to form a plurality of functional modules with different functions.

[0008] Optionally, in the above modular power converter, the functional device includes a plurality of power devices, and the plurality of power devices are dispersedly arranged in different electrical boxes.

[0009] Optionally, in the above modular power converter, the functional device further comprises a magnetic device connected to the power device and a heat dissipation component for dissipating heat from the modular power converter;

[0010] Wherein, the magnetic device and the heat dissipation assembly corresponding to the power device, and the power device are arranged in the same electrical box.

[0011] Optionally, in the above modular power converter, the installation space of the electrical box includes a closed chamber, and the power device, the magnetic device corresponding to the power device and the heat dissipation component are arranged in the same closed chamber;

[0012] Alternatively, the installation space of the electrical box includes a plurality of sealed chambers, and at least two of the power device, the magnetic device corresponding to the power device, and the heat dissipation component are respectively arranged in different sealed chambers.

[0013] Optionally, in the above modular power converter, an electrical interface is provided on the electrical box, and adjacent electrical boxes are electrically connected via the electrical interface.

[0014] Optionally, in the above modular power converter, the modular power converter further comprises a junction box, the junction box is connected in series with one of the plurality of electrical boxes, and the junction box is connected to an external power supply.

[0015] A power conversion device comprises the modular power converter as described above.

[0016] A photovoltaic system comprises the modular power converter as described above.

[0017] Since the modular power converter provided by the utility model includes a plurality of electrical boxes, the plurality of electrical boxes are connected in series, and the functional devices are dispersedly arranged in the plurality of electrical boxes, each electrical box and the functional devices arranged therein constitute a separate module. The split modular design solves the problems of difficulty in installation and maintenance caused by the heavy weight and large volume of the whole machine in the prior art, and is conducive to improving the installation convenience and maintenance convenience of the power converter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the structure of a modular power converter provided by an embodiment of the utility model;

[0020] Figure 2 A schematic structural diagram of another modular power converter provided in an embodiment of the utility model.

[0021] Among them, 100 is an electrical box, 200 is a functional device, 300 is an electrical interface, and 400 is a wiring box. DETAILED DESCRIPTION

[0022] In view of this, the core of the present invention is to provide a modular power converter to improve the convenience of installation and maintenance of the power converter.

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figure 1 to Figure 2 As shown, an embodiment of the utility model discloses a modular power converter, including a functional device 200 and a plurality of electrical boxes 100 , wherein the plurality of electrical boxes 100 are connected in series, and the functional device 200 is dispersedly arranged in the plurality of electrical boxes 100 .

[0025] Since the modular power converter provided by the utility model includes a plurality of electrical boxes 100, the plurality of electrical boxes 100 are connected in series, and the functional devices 200 are dispersedly arranged in the plurality of electrical boxes 100, each electrical box 100 and the functional devices 200 arranged therein constitute a separate module. The split modular design solves the problems of difficulty in installation and maintenance caused by the heavy weight and large volume of the whole machine in the prior art, and is conducive to improving the installation convenience and maintenance convenience of the power converter.

[0026] It should be understood that the above-mentioned functional device 200 can be a plurality of functional devices 200 of the same type dispersedly arranged in a plurality of electrical boxes 100, or can be a plurality of functional devices 200 of different types dispersedly arranged in a plurality of electrical boxes 100. In practical applications, it can be adjusted according to actual needs. As long as the setting method can meet the use requirements, it belongs to the protection scope of the present utility model.

[0027] Furthermore, the present invention does not specifically limit the number, shape, size, and other parameters of the electrical box 100. Any parameter setting that can meet the use requirements falls within the protection scope of the present invention.

[0028] Similarly, the electrical box 100 provided by the present invention is a box with a high protection level. The specific protection level is not limited. In practical applications, it can be selected according to the actual needs of the protection level, as long as it can meet the use requirements.

[0029] Alternatively, if Figure 1 As shown, in a specific embodiment of the present invention, there are multiple functional devices 200, and the multiple functional devices 200 are independently arranged in different electrical boxes 100, and the functions of each functional device 200 are different, so as to form multiple functional modules with different functions, which is convenient for later inspection and maintenance.

[0030] It should be noted that the above-mentioned functional devices 200 include but are not limited to power devices, magnetic devices, heat dissipation components and other types of functional devices 200. In practical applications, the type of functional device 200 can be adaptively adjusted according to actual needs. As long as the setting type can meet the use requirements, it belongs to the protection scope of the present utility model.

[0031] Alternatively, if Figure 2 As shown, in another specific embodiment of the utility model, the functional device 200 includes a plurality of power devices, and the plurality of power devices are dispersedly arranged in different electrical boxes 100 to form a plurality of modular power devices, so that the modular power converter can change the power level of the power converter by increasing or decreasing the number of electrical boxes 100. In practical applications, modular splicing can be performed according to the power size, which is beneficial to the design of the power conversion system and the differentiated design of the power level ladder of the later product.

[0032] Furthermore, in the above-mentioned new embodiment, the functional device 200 also includes a magnetic device and a heat dissipation component, the magnetic device and the heat dissipation component corresponding to the power device, and the power device is arranged in the same electrical box 100, the magnetic device is connected to the power device to realize the filtering function, and the heat dissipation component is used to dissipate the heat of the modular power converter, so that the modular power converter operates within a suitable temperature range, thereby improving the stability of the modular power converter.

[0033] It should be understood that in the above-mentioned utility model embodiment, the installation space of the electrical box 100 may include only one enclosed chamber, and the power device, the magnetic device corresponding to the power device, and the heat dissipation component are arranged in the same enclosed chamber; or the installation space of the electrical box 100 includes multiple enclosed chambers, and at least two of the power device, the magnetic device corresponding to the power device, and the heat dissipation component are respectively arranged in different enclosed chambers. As long as the setting method can meet the use requirements, it belongs to the protection scope of the present utility model.

[0034] Optionally, in a specific embodiment of the present invention, the installation space of the electrical box 100 includes two enclosed chambers, namely a first enclosed chamber and a second enclosed chamber. The first enclosed chamber is used to install electrical appliances and power devices, and the second enclosed chamber is used to install magnetic devices and heat dissipation components.

[0035] Furthermore, an electrical interface 300 is provided on the electrical box 100 , and adjacent electrical boxes 100 are electrically connected via the electrical interface 300 , so as to realize series connection between the plurality of electrical boxes 100 .

[0036] In addition, the modular power converter further comprises a connection box 400, which is connected in series with one of the plurality of electrical boxes 100, and the connection box 400 is connected to an external power source to achieve connection between the power converter and the power source.

[0037] In addition, the utility model also discloses a power conversion device and a photovoltaic system, including the modular power converter as described above. Therefore, the power conversion device and the photovoltaic system have all the technical effects of the above-mentioned modular power converter, which will not be described one by one in this article.

[0038] The terms "first" and "second" in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may include steps or units that are not listed.

[0039] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A modular power converter, characterized in that: It comprises a functional device and a plurality of electrical boxes, wherein the plurality of electrical boxes are connected in series, and the functional device is dispersedly arranged in the plurality of electrical boxes; There are multiple functional devices, which are independently arranged in different electrical boxes, and each of the functional devices has different functions, so as to form multiple functional modules with different functions.

2. The modular power converter according to claim 1, characterized in that: An electrical interface is provided on the electrical box, and adjacent electrical boxes are electrically connected via the electrical interface.

3. The modular power converter according to claim 1, characterized in that: The modular power converter further comprises a connection box, which is connected in series with one of the plurality of electrical boxes and is connected to an external power source.

4. A modular power converter, characterized in that: It comprises a functional device and a plurality of electrical boxes, wherein the plurality of electrical boxes are connected in series, and the functional device is dispersedly arranged in the plurality of electrical boxes; Among them, the functional devices include multiple power devices, magnetic devices connected to the power devices and heat dissipation components for dissipating heat from the modular power converter. The multiple power devices are dispersedly arranged in different electrical boxes, and the power devices and the magnetic devices and heat dissipation components corresponding to the power devices are arranged in the same electrical box.

5. The modular power converter according to claim 4, characterized in that: The installation space of the electrical box body includes a closed chamber, and the power device, the magnetic device corresponding to the power device and the heat dissipation component are arranged in the same closed chamber; Alternatively, the installation space of the electrical box includes a plurality of sealed chambers, and at least two of the power device, the magnetic device corresponding to the power device, and the heat dissipation component are respectively arranged in different sealed chambers.

6. The modular power converter according to claim 4 or 5, characterized in that: An electrical interface is provided on the electrical box, and adjacent electrical boxes are electrically connected via the electrical interface.

7. The modular power converter according to claim 4 or 5, characterized in that: The modular power converter further comprises a connection box, which is connected in series with one of the plurality of electrical boxes and is connected to an external power source.

8. A power conversion device, characterized in that: It comprises a modular power converter as claimed in any one of claims 1 to 3; or a modular power converter as claimed in any one of claims 4 to 7.

9. A photovoltaic system, characterized in that: It comprises a modular power converter as claimed in any one of claims 1 to 3; or a modular power converter as claimed in any one of claims 4 to 7.

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