Inverter and power conversion apparatus

Abstract

The utility model provides an inverter and power conversion equipment, and the inverter comprises a box body which comprises an accommodation cavity; the partition plate is arranged in the containing cavity and used for dividing the containing cavity into a first cavity body and a second cavity body. The main control circuit board is arranged in the first cavity; the filter circuit board is arranged in the second cavity; and the magnetic ring is arranged in the second cavity and is used for preventing electromagnetic interference on the inverter. The inverter provided by the utility model can avoid the problems of mutual interference among components, EMC interference and the like. The main control circuit board and the filter circuit board are arranged in separate cavities, so that the structural space is effectively utilized, the volume of the box body is reduced, and the weight of the inverter is reduced. And meanwhile, the main control circuit board and the filter circuit board are arranged in different cavities, so that the wiring of the circuit is clearer and more concise, and the maintenance of the equipment is facilitated. In addition, a magnetic ring is also arranged in the second cavity, so that the interference of electromagnetism on the inverter can be further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage, and particularly to an inverter and a power conversion device. Background Art

[0002] At present, in the existing energy storage hybrid inverter, the internal layout of the housing is usually to stack various functional circuit boards in a cavity, and external connection terminals are arranged on the lower side or the left and right sides of the housing, including strong electrical terminals for current transmission and weak electrical terminals for control and communication. Based on the principle of the energy storage hybrid inverter, EMC (Electro Magnetic Compatibility) protection design is required. The core is the shielding of the conduction and radiation of high-frequency harmonics, which poses high requirements on the shielding capabilities of the housing and wires. The commonly adopted solutions are as follows: 1. Design a filter protection circuit board. 2. Install a filter magnetic ring at a position where the wire is close to the terminal. 3. Install a protection shielding board. To achieve a good shielding effect, usually all the above three technical solutions are used as much as possible. With a single-cavity layout, the installation of magnetic rings inside the product usually affects the wire routing layout of the product. Almost all wires connected to the terminals have protection requirements, so magnetic rings will be installed at different positions of the product. The magnetic rings have a certain weight, and special design of the fixing position and fixing method is required to prevent collision with the PCBA (Printed Circuit Board Assembly), which makes the internal layout of the product relatively chaotic and requires a large space, and is not conducive to the overall wire routing and layout of the product.

[0003] Therefore, how to design a power conversion device with a small volume, easy to maintain, capable of effectively reducing the mutual interference between various electrical components, and having a simple internal layout has become an urgent problem to be solved at present. Summary of the Utility Model

[0004] The utility model aims to at least solve the problem of chaotic internal cavity layout caused by EMC design of the power conversion device.

[0005] To this end, a first aspect of the utility model provides an inverter.

[0006] A second aspect of the utility model provides a power conversion device.

[0007] In view of this, a first aspect of the utility model provides an inverter, including: a box body, the box body including an accommodation cavity; a partition board, arranged in the accommodation cavity and used for dividing the accommodation cavity into a first cavity and a second cavity; a main control circuit board, arranged in the first cavity; a filter circuit board, arranged in the second cavity; and a magnetic ring, arranged in the second cavity and used for preventing electromagnetic interference to the inverter.

[0008] The inverter provided by the present utility model includes a box body, a partition board, a main control circuit board, a filter circuit board, and a magnetic ring. The box body includes a receiving cavity. The partition board is disposed in the receiving cavity and can divide the receiving cavity into a first cavity and a second cavity. Thus, the main control circuit board can be arranged in the first cavity, and the filter circuit board can be arranged in the second cavity, realizing the separate cavity arrangement of the main control circuit board and the filter circuit board. In this way, not only can the mutual interference between components be avoided, but also problems such as EMC interference can be avoided. The separate cavity arrangement of the main control circuit board and the filter circuit board effectively utilizes the structural space, reduces the volume of the box body, and thus reduces the weight of the inverter. At the same time, by arranging the main control circuit board and the filter circuit board in separate cavities, the wiring of the circuit can be made clearer and more concise, facilitating the maintenance of the device. In addition, since a magnetic ring is also arranged in the second cavity of the present application, the electromagnetic interference to the inverter can be further reduced.

[0009] The inverter provided by the present utility model may further have the following additional technical features:

[0010] In some embodiments, optionally, the inverter further includes: a junction box, which is disposed on the side wall of the box body and is located on the side of the second cavity away from the first cavity.

[0011] In these embodiments, the inverter further includes a junction box. The junction box is disposed on the side wall of the box body and is located on the side of the second cavity away from the first cavity. By arranging the junction box on the side of the second cavity away from the first cavity, the wire harnesses in the first cavity can all pass through the second cavity and then be connected to the junction box. In this way, the filter circuit board and the magnetic ring in the second cavity can be used for filtering to prevent electromagnetic interference. And since the junction box is disposed on the side of the second cavity away from the first cavity, that is, the second cavity is located between the junction box and the first cavity, the wire harnesses can have sufficient space to be arranged in the second cavity, making the wiring clearer and more concise.

[0012] In some embodiments, optionally, the main control circuit board includes a main control wire harness, and the inverter further includes: a wire passing port, which is disposed on the partition board and is used to communicate the first cavity and the second cavity. The main control wire harness passes through the wire passing port and the magnetic ring and is connected to the junction box.

[0013] In these embodiments, the main control circuit board includes a main control wire harness, and the inverter further includes a wire passing port. The wire passing port is disposed on the partition board and can communicate the first cavity and the second cavity, so that the main control wire harness can pass through the wire passing port and the magnetic ring in the second cavity and be connected to the junction box. By arranging the wire passing port, it is convenient for the wiring of the main control wire harness, enabling the main control wire harness to enter the second cavity concentratedly through the wire passing port and ensuring that the main control wire harness is not scattered.

[0014] In some embodiments, optionally, the wire passing port is disposed close to the side wall of the receiving cavity.

[0015] In these embodiments, the wire passing opening is arranged close to the side wall of the accommodation cavity. On the one hand, it is beneficial to the arrangement of the wire passing opening. On the other hand, it is convenient to fix the main control wire harness on the side wall of the accommodation cavity, thereby preventing the main control wire harness from being scattered.

[0016] In some embodiments, optionally, the wire passing opening is a through hole or a notch formed by a partition plate and the side wall of the accommodation cavity.

[0017] In these embodiments, setting the wire passing opening as a through hole or a notch formed by a partition plate and the side wall of the accommodation cavity is beneficial to the arrangement of the wire passing opening, simplifies the process, and also facilitates the routing of the wire harness.

[0018] In some embodiments, optionally, the filter circuit board is arranged on the side wall of the second cavity and close to the junction box.

[0019] In these embodiments, by arranging the filter circuit board on the side wall of the second cavity and close to the junction box, the filtering effect can be further improved.

[0020] In some embodiments, optionally, the filter circuit board is arranged on the partition plate.

[0021] In these embodiments, the filter circuit board can also be arranged on the partition plate. Arranging the filter circuit board on the partition plate is beneficial to the fixed installation of the filter circuit board.

[0022] In some embodiments, optionally, the partition plate includes a metal partition plate.

[0023] In these embodiments, the partition plate includes a metal partition plate. The metal partition plate can play the role of cavity structure isolation and magnetic field isolation, thereby further avoiding mutual interference between components.

[0024] In some embodiments, optionally, the box body includes a metal box body.

[0025] In some embodiments, optionally, the partition plate is arranged in the accommodation cavity along the width direction of the box body.

[0026] In these embodiments, by arranging the partition plate in the accommodation cavity along the width direction of the box body, that is, dividing the accommodation cavity into a first cavity and a second cavity along the length direction of the box body, this is beneficial to the arrangement of the main control circuit board and the filter circuit board.

[0027] In some embodiments, optionally, the edge of the partition plate is provided with a flanging structure, and the partition plate is installed in the accommodation cavity through the flanging structure.

[0028] In these embodiments, a hemming structure is provided at the edge of the partition board, and the partition board is installed in the accommodation cavity through the hemming structure. It can be understood that the thickness of the partition board is generally relatively thin, and it is not easy to be fixedly installed. Therefore, by providing the hemming structure, it is beneficial to the fixed installation of the partition board.

[0029] In some embodiments, optionally, the inverter further includes: a first buckle structure provided in the accommodation cavity; a second buckle structure provided on the partition board, and the partition board is installed in the accommodation cavity through the cooperation of the first buckle structure and the second buckle structure.

[0030] In these embodiments, the inverter further includes a first buckle structure and a second buckle structure. The first buckle structure is provided in the accommodation cavity. The second buckle structure is provided on the partition board, and the partition board is installed in the accommodation cavity through the cooperation of the first buckle structure and the second buckle structure. Fixing and installing the partition board through the buckle structure is beneficial to the installation and disassembly of the partition board, and facilitates the assembly and maintenance of the device.

[0031] In some embodiments, optionally, the accommodation cavity includes a cavity opening, and the inverter further includes: a cover plate provided at the cavity opening for sealing the accommodation cavity; a radiator provided on the box body, opposite to the main control circuit board and the filter circuit board, for dissipating heat from the main control circuit board and the filter circuit board.

[0032] In these embodiments, the accommodation cavity includes a cavity opening, and the inverter further includes a cover plate and a radiator. The cover plate is provided at the cavity opening and can seal the accommodation cavity, thereby ensuring that no dust enters the device and ensuring the safety of the device and the user. The radiator is provided on the box body, opposite to the main control circuit board and the filter circuit board, and can dissipate heat from the main control circuit board and the filter circuit board. By providing the heat dissipation plate, the service life of the main control circuit board and the filter circuit board is effectively improved.

[0033] A second aspect of the present utility model provides a power conversion device, including: an energy storage battery pack; an inverter as in any one of the technical solutions of the first aspect, electrically connected to the energy storage battery pack.

[0034] The power conversion device provided by the present application includes an energy storage battery pack and an inverter as in any one of the technical solutions of the first aspect, and the inverter is electrically connected to the energy storage battery pack. Since the power conversion device provided by the present application includes the inverter as in any one of the technical solutions of the first aspect. Therefore, the power conversion device provided by the present application also has all the beneficial effects of the inverter as in any one of the technical solutions of the first aspect, which will not be elaborated here.

[0035] The additional aspects and advantages of the present utility model will become obvious in the following description part, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0037] Figure 1 FIG. 1 shows one of the schematic structural diagrams of an inverter according to an embodiment of the present utility model;

[0038] Figure 2 FIG. 2 shows another schematic structural diagram of an inverter according to an embodiment of the present utility model;

[0039] Figure 3 FIG. 3 shows an exploded view of an inverter according to an embodiment of the present utility model;

[0040] Figure 4 FIG. 4 shows a third schematic structural diagram of an inverter according to an embodiment of the present utility model.

[0041] Wherein, Figures 1 to 4 The corresponding relationship between the reference numerals and the component names in the drawings is as follows:

[0042] 1 housing, 12 accommodation cavity, 122 first cavity, 124 second cavity, 126 cavity opening, 2 partition board, 22 flanging structure, 24 notch, 3 main control circuit board, 32 main control wire harness, 4 filter circuit board, 5 magnetic ring, 6 junction box, 7 wire passing port, 8 cover plate, 9 radiator. Detailed implementation manners

[0043] In order to more clearly understand the above objects, features and advantages of the present utility model, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0044] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present utility model is not limited by the specific embodiments disclosed below.

[0045] The following refers to Figures 1 to 4 Describe an inverter and a power conversion device according to some embodiments of the present utility model.

[0046] According to an embodiment of the first aspect of the present utility model, as Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown in the figure, a first aspect of the present utility model provides an inverter, which includes a box body 1, a partition board 2, a main control circuit board 3, a filter circuit board 4, and a magnetic ring 5. The box body 1 includes a receiving cavity 12. The partition board 2 is disposed in the receiving cavity 12 and is used to divide the receiving cavity 12 into a first cavity 122 and a second cavity 124. The main control circuit board 3 is disposed in the first cavity 122. The filter circuit board 4 is disposed in the second cavity 124. The magnetic ring 5 is disposed in the second cavity 124 and is used to prevent electromagnetic interference to the inverter.

[0047] The inverter provided by the present utility model includes a box body 1, a partition board 2, a main control circuit board 3, a filter circuit board 4, and a magnetic ring 5. The box body 1 includes a receiving cavity 12. The partition board 2 is disposed in the receiving cavity 12 and can divide the receiving cavity 12 into a first cavity 122 and a second cavity 124. Thus, the main control circuit board 3 can be disposed in the first cavity 122, and the filter circuit board 4 can be disposed in the second cavity 124, realizing the separate cavity arrangement of the main control circuit board 3 and the filter circuit board 4. This can not only avoid mutual interference between components but also avoid problems such as EMC interference. The separate cavity arrangement of the main control circuit board 3 and the filter circuit board 4 effectively utilizes the structural space, reduces the volume of the box body 1, and thus reduces the weight of the inverter. At the same time, separating the main control circuit board 3 and the filter circuit board 4 into different cavities can make the wiring of the circuit more clear and concise, facilitating the maintenance of the device. In addition, since a magnetic ring 5 is also disposed in the second cavity 124 in this application, electromagnetic interference to the inverter can be further reduced.

[0048] In some embodiments, optionally, the inverter further includes: a junction box 6, which is disposed on the side wall of the box body 1 and is located on the side of the second cavity 124 away from the first cavity 122.

[0049] In these embodiments, the inverter further includes a junction box 6. The junction box 6 is disposed on the side wall of the box body 1 and is located on the side of the second cavity 124 away from the first cavity 122. By disposing the junction box 6 on the side of the second cavity 124 away from the first cavity 122, the wire harnesses in the first cavity 122 can all pass through the second cavity 124 and then be connected to the junction box 6. In this way, the filter circuit board 4 and the magnetic ring 5 in the second cavity 124 can be used for filtering to prevent electromagnetic interference. And since the junction box 6 is disposed on the side of the second cavity 124 away from the first cavity 122, that is, the second cavity 124 is located between the junction box 6 and the first cavity 122, there is sufficient space for the wire harnesses to be arranged in the second cavity 124, making the wiring more clear and concise.

[0050] In some embodiments, optionally, the junction box 6 is disposed on the inner wall of the second cavity 124.

[0051] In some embodiments, optionally, the junction box 6 is embedded in the side wall of the box body 1.

[0052] In some embodiments, optionally, the junction box 6 is arranged on the outer side wall of the box body 1.

[0053] In some embodiments, optionally, the main control circuit board 3 includes a main control wire harness 32, and the inverter further includes: a wire passing port 7 arranged on the partition plate 2 for communicating the first cavity 122 and the second cavity 124, and the main control wire harness 32 passes through the wire passing port 7 and the magnetic ring 5 to be connected with the junction box 6.

[0054] In these embodiments, the main control circuit board 3 includes a main control wire harness 32, and the inverter further includes a wire passing port 7. The wire passing port 7 is arranged on the partition plate 2 and can communicate the first cavity 122 and the second cavity 124, so that the main control wire harness 32 can pass through the wire passing port 7 and the magnetic ring 5 in the second cavity 124 to be connected with the junction box 6. By arranging the wire passing port 7, it is convenient for the routing of the main control wire harness 32, so that the main control wire harness 32 enters the second cavity 124 from the wire passing port 7 centrally, ensuring that the main control wire harness 32 is not scattered.

[0055] In some embodiments, optionally, the magnetic ring 5 is arranged close to the end of the main control wire harness 32.

[0056] In these embodiments, arranging the magnetic ring 5 close to the end of the main control wire harness 32 is beneficial for filtering.

[0057] In some embodiments, optionally, the number of magnetic rings 5 is multiple.

[0058] In some embodiments, optionally, a fixing structure is arranged in the second cavity 124, and multiple magnetic rings 5 are installed on the fixing structure.

[0059] In these embodiments, by arranging the fixing structure to fix multiple magnetic rings 5, the magnetic rings 5 can be prevented from colliding with components such as the filtering circuit board 4, thereby ensuring that components such as the filtering circuit board 4 are not damaged.

[0060] In some embodiments, optionally, the wire passing port 7 is arranged close to the side wall of the accommodating cavity 12.

[0061] In these embodiments, arranging the wire passing port 7 close to the side wall of the accommodating cavity 12 is beneficial for the arrangement of the wire passing port 7 on the one hand, and convenient for fixing the main control wire harness 32 on the side wall of the accommodating cavity 12 on the other hand, thereby preventing the main control wire harness 32 from being scattered.

[0062] In some embodiments, optionally, the wire passing port 7 is a through hole or a notch 24 formed by the partition plate 2 and the side wall of the accommodating cavity 12.

[0063] In these embodiments, the wire passing opening 7 is arranged as a through hole or notch 24 formed by the partition plate 2 and the side wall of the accommodating cavity 12, which is beneficial to the arrangement of the wire passing opening 7, simplifies the process, and also facilitates the routing of the wire harness.

[0064] In some embodiments, optionally, the filtering circuit board 4 is arranged on the side wall of the second cavity 124 and is close to the junction box 6.

[0065] In these embodiments, by arranging the filtering circuit board 4 on the side wall of the second cavity 124 and close to the junction box 6, the filtering effect can be further improved.

[0066] In some embodiments, optionally, the filtering circuit board 4 is arranged on the partition plate 2.

[0067] In these embodiments, the filtering circuit board 4 can also be arranged on the partition plate 2. Arranging the filtering circuit board 4 on the partition plate 2 is beneficial to the fixed installation of the filtering circuit board 4.

[0068] In some embodiments, optionally, the partition plate 2 includes a metal partition plate.

[0069] In these embodiments, the partition plate 2 includes a metal partition plate. The metal partition plate can play the role of cavity structure isolation and magnetic field isolation, thereby further avoiding mutual interference between components.

[0070] In some embodiments, optionally, the box body 1 includes a metal box body.

[0071] In some embodiments, optionally, the partition plate 2 is arranged in the accommodating cavity 12 along the width direction of the box body 1.

[0072] In these embodiments, by arranging the partition plate 2 in the accommodating cavity 12 along the width direction of the box body 1, that is, dividing the accommodating cavity 12 into a first cavity 122 and a second cavity 124 along the length direction of the box body 1, this is beneficial to the arrangement of the main control circuit board 3 and the filtering circuit board 4. Among them, Figure 4 A represents the width direction of the box body 1.

[0073] In some embodiments, optionally, the edge of the partition plate 2 is provided with a flanging structure 22, and the partition plate 2 is installed in the accommodating cavity 12 through the flanging structure 22.

[0074] In these embodiments, the edge of the partition plate 2 is provided with a flanging structure 22, and the partition plate 2 is installed in the accommodating cavity 12 through the flanging structure 22. It can be understood that the thickness of the partition plate 2 is generally relatively thin, and it is not easy to be fixedly installed. Therefore, by providing the flanging structure 22, it is beneficial to the fixed installation of the partition plate 2.

[0075] In some embodiments, optionally, the inverter further includes: a first snap structure disposed within the receiving cavity 12; a second snap structure disposed on the partition 2, and the partition 2 is mounted within the receiving cavity 12 through the cooperation of the first snap structure and the second snap structure.

[0076] In these embodiments, the inverter further includes a first snap structure and a second snap structure. The first snap structure is disposed within the receiving cavity 12. The second snap structure is disposed on the partition 2, and the partition 2 is mounted within the receiving cavity 12 through the cooperation of the first snap structure and the second snap structure. Fixing and installing the partition 2 through the snap structure is beneficial to the installation and disassembly of the partition 2, and facilitates the assembly and maintenance of the device.

[0077] In some embodiments, optionally, the partition 2 is welded within the receiving cavity 12. The welding method is stable and can ensure the overall stability of the device.

[0078] In some embodiments, optionally, the receiving cavity 12 includes a cavity opening 126, and the inverter further includes: a cover plate 8 disposed at the cavity opening 126 for sealing the receiving cavity 12; a radiator 9 disposed on the housing 1, opposite to the main control circuit board 3 and the filter circuit board 4, for dissipating heat from the main control circuit board 3 and the filter circuit board 4.

[0079] In these embodiments, the receiving cavity 12 includes a cavity opening 126, and the inverter further includes a cover plate 8 and a radiator 9. The cover plate 8 is disposed at the cavity opening 126 and can seal the receiving cavity 12, thereby ensuring that no dust enters the interior of the device and ensuring the safety of the device and the user. The radiator 9 is disposed on the housing 1, opposite to the main control circuit board 3 and the filter circuit board 4, and can dissipate heat from the main control circuit board 3 and the filter circuit board 4. By providing the heat sink, the service life of the main control circuit board 3 and the filter circuit board 4 is effectively improved.

[0080] In some embodiments, optionally, the radiator 9 is embedded in the housing 1, and one side of the radiator 9 is located within the receiving cavity 12, and the main control circuit board 3 and the filter circuit board 4 are disposed on the radiator 9.

[0081] In these embodiments, by directly disposing the main control circuit board 3 and the filter circuit board 4 on the radiator 9, it is beneficial to dissipate heat from the main control circuit board 3 and the filter circuit board 4.

[0082] In the first aspect of the present utility model, an inverter is proposed. Taking this inverter as a household energy storage inverter as an example, it includes: a box body, a face cover, a cavity partition board, a junction box, a main control circuit board, and a filtering circuit board. The box body is used to install and fix the main control circuit of the energy storage inverter and the junction box. The face cover is arranged on the upper side of the box body for sealing the box body. The cavity partition board is arranged inside the box body, dividing the internal space of the box body into a first cavity and a second cavity. The junction box is arranged on the side wall of the second cavity inside the box body for installing the external connectors of the household energy storage inverter. The main control circuit board is arranged inside the first cavity of the box body. The filtering circuit board is arranged inside the second cavity of the box body. The first cavity is used for the PCBA hardware layout, and the second cavity is used for the outgoing line and magnetic ring arrangement.

[0083] In some embodiments, optionally, the side wall of the box body is used to set the junction box and the external outgoing line, and the second cavity is located between the first cavity and the junction box.

[0084] In some embodiments, optionally, a filtering circuit board is also arranged in the second cavity of the box body. The filtering circuit board can be arranged on one side of the connector or can be arranged separately and connected by wires.

[0085] In some embodiments, optionally, for the overall structural layout of the household energy storage inverter, a box body, a face cover, and a junction box are arranged on the outside of the entire inverter. A cavity partition board is arranged inside the box body, dividing the box body into a first cavity and a second cavity. The cavity partition board inside the box body is a metal partition board, which plays the role of cavity structure isolation and magnetic field isolation. The main control circuit board is mainly arranged inside the first cavity. The junction box and the external outgoing line are arranged on the side wall of the second cavity. The second cavity is located between the first cavity and the junction box, and all outgoing line connectors are arranged on the junction box. The filtering circuit board serial number and multiple magnetic rings are arranged inside the second cavity. The outgoing line wires are led out from the main control circuit board, pass through the holes of the magnetic rings, and enter the connector.

[0086] In this application, first, the cavity partition board is a magnetic conductive metal plate, which plays the role of electromagnetic shielding and isolation, and the radiation interference in the two cavities is isolated by the partition board. Secondly, the junction box centralizes all the strong and weak electrical connectors entering and leaving the hybrid inverter, so that the outlet of the inverter connection wires is concentrated in the second cavity. Finally, since the conducted interference mainly exists in the wires of the connectors connected to the junction box, the high-frequency interference is effectively filtered out through the magnetic rings arranged on the second cavity and the filtering capacitors on the filtering board.

[0087] The design of the double-cavity layout not only solves the EMC design bottleneck of the energy storage hybrid inverter, but also differentiates the functional layout in the spatial structure, which is beneficial to the assembly and maintenance of the product, and eliminates the mutual interference between the filtering magnetic rings and the control circuit in terms of structure and electricity.

[0088] The key points of this application are as follows:

[0089] 1. An isolation board is provided inside the PCS (Power Conversion System, energy storage inverter), dividing the box into a first cavity and a second cavity. The first cavity is used for the PCBA hardware layout, and the second cavity is used for the arrangement of magnetic rings.

[0090] 2. The side wall is used to set the junction box and the external outgoing line, and the second cavity is located between the first cavity and the junction box.

[0091] 3. A filter circuit board is also provided in the second cavity. The filter circuit board can be set on one side of the connector or arranged separately and connected by wires.

[0092] This application solves the problem of chaotic internal cavity layout caused by the EMC design of the energy storage hybrid inverter. The internal layout of the first cavity is simple and convenient for installation and maintenance. The second cavity is dedicated to the layout of the filter circuit and magnetic rings, improving the EMC protection ability of the product, and the partition between the cavities effectively shields the mutual interference between circuits.

[0093] In the second aspect of the present utility model, a power conversion device is proposed, including: an energy storage battery pack; an inverter as described in any one of the embodiments of the first aspect, electrically connected to the energy storage battery pack.

[0094] The power conversion device provided by this application includes an energy storage battery pack and an inverter as described in any one of the embodiments of the first aspect, and the inverter is electrically connected to the energy storage battery pack. Since the power conversion device provided by this application includes the inverter as described in any one of the embodiments of the first aspect. Therefore, the power conversion device provided by this application also has all the beneficial effects of the inverter as described in any one of the embodiments of the first aspect, which will not be elaborated here.

[0095] In some embodiments, optionally, the power conversion device can be an integrated energy storage machine and a split energy storage machine.

[0096] In the present utility model, the term "plurality" refers to two or more, unless otherwise clearly defined. Terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0097] In the description of this specification, the descriptions of the terms "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0098] The foregoing are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An inverter, characterized in that, Comprising: A box body, the box body including a containing cavity; A partition board, arranged in the containing cavity and used for separating the containing cavity into a first cavity and a second cavity; A main control circuit board, arranged in the first cavity; A filter circuit board, arranged in the second cavity; A magnetic ring, arranged in the second cavity and used for preventing electromagnetic interference to the inverter.

2. The inverter according to claim 1, wherein Further comprising: A junction box, arranged on the side wall of the box body and located on the side of the second cavity away from the first cavity.

3. The inverter according to claim 2, characterized in that, The main control circuit board includes a main control wire harness, and the inverter further includes: A wire passing port, arranged on the partition board and used for communicating the first cavity and the second cavity, and the main control wire harness passes through the wire passing port and the magnetic ring and is connected to the junction box.

4. The inverter according to claim 3, wherein The wire passing port is arranged close to the side wall of the containing cavity; and / or The wire passing port is a through hole or a notch formed by the partition board and the side wall of the containing cavity.

5. The inverter according to claim 2, wherein The filter circuit board is arranged on the side wall of the second cavity and close to the junction box; or The filter circuit board is arranged on the partition board.

6. The inverter according to any one of claims 1 to 5, wherein The partition board includes a metal partition board; and / or The box body includes a metal box body; and / or The partition board is arranged in the containing cavity along the width direction of the box body.

7. The inverter according to any one of claims 1 to 5, wherein The edge of the partition board is provided with a flanging structure, and the partition board is installed in the containing cavity through the flanging structure.

8. The inverter according to any one of claims 1 to 5, characterized in that, Further comprising: A first buckle structure, arranged in the containing cavity; A second buckle structure, arranged on the partition board, and the partition board is installed in the containing cavity through the cooperation of the first buckle structure and the second buckle structure.

9. The inverter according to any one of claims 1 to 5, characterized in that, The containing cavity includes a cavity opening, and the inverter further includes: A cover plate, arranged at the cavity opening and used for sealing the containing cavity; A radiator, arranged on the box body and opposite to the main control circuit board and the filter circuit board, and used for dissipating heat from the main control circuit board and the filter circuit board.

10. A power conversion device, characterized in that, Comprising: An energy storage battery pack; The inverter according to any one of claims 1 to 9, electrically connected to the energy storage battery pack.

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