Circuit board and power conversion equipment

Abstract

The utility model discloses a circuit board and power conversion equipment, and relates to the technical field of electrical equipment, and the circuit board comprises an explosive device and a separator. The isolation piece is provided with an isolation area used for containing the explosive device, and the isolation area is filled with a sealing material so as to isolate the explosive device from being in contact with air. According to the circuit board provided by the invention, the isolation region is arranged, so that the explosive device can be located in the isolation region, and meanwhile, the isolation region is filled with the sealing material, so that the explosive device is prevented from being in contact with air, and combustible gas released by the explosive device under extreme conditions cannot be in contact with the air; therefore, the combustible gas cannot be mixed with the air to form an explosive mixture, and the risk of explosion of the power conversion equipment is reduced.

Description

[0001] This application claims priority to the following Chinese patent application, the entire contents of which are incorporated herein by reference. Application No.: 202422683690.7, Application Date: November 4, 2024, Applicant: Sungrow Power Supply (Shanghai) Co., Ltd., Invention Title: A Circuit Board and Power Conversion Device. Technical Field

[0002] This application relates to the field of electrical equipment technology, and more specifically, to a circuit board and a power conversion device. Background Technology

[0003] In extreme cases, some components in power conversion equipment may release flammable gases, which can mix with the air inside the equipment cavity to form an explosive mixture, posing a safety hazard of explosion. Traditional explosion prevention methods generally employ explosion venting structures, but these structures cannot completely prevent the hazards caused by an explosion.

[0004] Therefore, how to reduce the risk of explosion in power conversion equipment has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this application is to provide a circuit board and a power conversion device.

[0006] In one aspect, this application provides a circuit board, comprising: a substrate; and an explosive device;

[0007] The isolator has an isolation area for accommodating the explosive device, the isolation area being filled with a sealing material to isolate the explosive device from contact with air, and the explosive device and the isolator are fixed to a substrate.

[0008] Optionally, the isolation element includes a partition wall, which encloses an isolation zone.

[0009] Optionally, the height of the enclosure shall not be less than the height of the explosive device.

[0010] Optionally, the spacer may also include a filling port.

[0011] Optionally, the filling opening is formed at the opening of the enclosure.

[0012] Optionally, in the circuit board described above, a cover plate is provided at the opening of the surrounding plate, and a filling port is formed in the cover plate.

[0013] Optionally, the isolation element may have one or more partitions to form multiple isolation zones.

[0014] Optionally, the isolation element includes multiple isolation zones, each zone being used to contain a group of explosive devices.

[0015] In another aspect, this application provides a power conversion device, including a circuit board as described in any of the above.

[0016] The circuit board embodiments provided in this application, by setting an isolation zone, allow explosive devices to be located within the isolation zone. At the same time, the isolation zone is filled with sealing material to prevent the explosive devices from contacting the air. This prevents the flammable gas released by the explosive devices in extreme cases from coming into contact with the air, and thus prevents the flammable gas from mixing with the air to form an explosive mixture, thereby reducing the risk of explosion of the power conversion equipment. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0018] Figure 1 A structural diagram of a circuit board provided in an embodiment of this application;

[0019] Figure 2 Another structural diagram of the circuit board provided in the embodiments of this application;

[0020] Figure 3 Another structural diagram of the circuit board provided in the embodiments of this application;

[0021] Figure 4 A structural diagram of an isolation component provided in an embodiment of this application;

[0022] Figure 5 Another structural diagram of the circuit board provided in the embodiments of this application;

[0023] Figure 6 Another structural diagram of the isolation component provided in the embodiments of this application;

[0024] Figure 7 A structural diagram of an isolation component provided in an embodiment of this application;

[0025] Figure 8 Another structural diagram of the circuit board provided in the embodiments of this application.

[0026] Among them, 100 is the isolation component, 101 is the isolation area, 102 is the sealing material, 103 is the enclosure, 104 is the filling port, 105 is the cover plate, and 106 is the partition.

[0027] 200 is the substrate, and 201 is the explosive device. Detailed Implementation

[0028] The core of this application is to provide a circuit board to reduce the risk of explosion in power conversion equipment.

[0029] Another core aspect of this application is to provide a power conversion device having the aforementioned circuit board.

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] In extreme cases, some components in power conversion equipment may release flammable gases. These gases can mix with air inside the equipment cavity to form an explosive mixture, posing a potential explosion hazard. Specifically, during the production or use of power conversion equipment, potentially explosive components such as film capacitors on circuit boards may release flammable gases like hydrogen under extreme conditions, such as malfunctions or failures. This flammable gas mixes with air inside the equipment cavity to form an explosive mixture, which can explode upon contact with an electrical spark or open flame, posing a significant safety hazard.

[0032] Traditional methods of preventing explosions generally employ explosion venting structures. However, these structures typically release the explosion pressure after an explosion occurs, thereby reducing damage to other components and providing some protection to the user. But since the explosion venting structure can only be activated when an explosion occurs, it cannot completely prevent the hazards caused by the explosion.

[0033] Therefore, the following will combine Figures 1 to 8 The circuit board disclosed in the embodiments of this application will be explained and described in detail.

[0034] like Figures 1 to 8 As shown in the illustration, this application discloses a circuit board including a substrate 200, an explosive device 201, and an isolator 100. The explosive device 201 is located on the substrate 200, and the isolator 100 includes an isolation region 101. By setting the isolation region 101, the explosive device 201 can be located within the isolation region 101. Simultaneously, a sealing material 102 is filled within the isolation region 101 to prevent the explosive device 201 from contacting air. This prevents the flammable gas released by the explosive device 201 in extreme cases from coming into contact with air, thus preventing the flammable gas from mixing with air to form an explosive mixture, reducing the risk of electrical equipment explosion. For example, the explosive device is a film capacitor. It should be understood that this is merely an example and not a limitation; any device that may release flammable gas is acceptable.

[0035] The isolation component 100 has an isolation zone 101, within which the explosive device 201 is located. By filling the isolation zone 101 with a sealing material 102, the explosive device 201 is prevented from contacting air. This prevents the flammable gas released by the explosive device 201 in extreme circumstances from coming into contact with air, thus preventing the flammable gas from mixing with air to form an explosive mixture and reducing the risk of explosion of the power conversion equipment. In this embodiment, the isolation zone 101 isolates the explosive device 201 from other devices and forms a filling space for the sealing material 102, allowing the sealing material 102 to completely enclose each explosive device 201 and prevent it from contacting air. The sealing material 102 can be made of rubber or cured adhesive, etc., and this application does not impose any limitations, as long as the sealing material effectively isolates the explosive device from air. Preferably, the sealing material 102 is a curing adhesive, which is filled into the isolation area 101 by a filling method, so that the curing adhesive covers and encapsulates all explosive devices 201. This prevents the explosive devices 201 from contacting air and improves the thermal conductivity of the explosive devices 201. For ease of understanding, the end of the explosive device 201 connected to the substrate 200 is defined as the connection end, and the end of the explosive device 201 opposite to the connection end is defined as the free end. The top of the isolation area 101 is higher than the free end to ensure that the curing adhesive can completely cover the explosive devices 201 after curing, thereby preventing the explosive devices 201 from contacting air. For example, the curing adhesive can completely cover and encapsulate all explosive devices 201. Completely covering all explosive devices 201 means that each explosive device 201 is wrapped with curing adhesive, and the gaps between two adjacent explosive devices 201 are filled with curing adhesive.

[0036] In some embodiments, such as Figure 1 and Figure 2 As shown, the isolation member 100 includes a surrounding plate 103 to enclose and form an isolation area 101. The surrounding plate 103 and the substrate 200 together form a space for filling with sealing material. The height of the surrounding plate 103 is not less than the height of the explosive device 201 to ensure that the sealing material 102 can completely cover the free end of the explosive device 201. There can be one or more surrounding plates 103. Specifically, the isolation member 100 can adopt a cylindrical structure, in which case a single surrounding plate can be used to enclose an isolation area with a circular cross-section. Alternatively, the isolation member 100 can also adopt a cuboid structure, such as... Figure 1 As shown, the isolation component 100 can be enclosed by four surrounding plates 103 to form an isolation area 101 with a rectangular cross-section. The specific shape of the isolation component 100 can be determined according to the distribution position of the actual explosive device 201, which is not limited here.

[0037] To facilitate the filling of sealing material 102 into the isolation zone 101, the isolation element 100 also includes a filling port 104, which allows the filling equipment to fill the isolation zone 101 with sealing material 102 through the filling port 104.

[0038] In some embodiments, such as Figure 1 and Figure 2 As shown, the filling port 104 is formed at the opening of the enclosure 103. Specifically, the enclosure 103 encloses and forms an isolation zone 101. At the same time, the enclosure 103 and the substrate 200 together form a space for filling sealing material. The side opposite to the substrate 200 is the opening side, and the filling port 104 is formed at the opening of the enclosure 103. That is, the entire opening side is the filling port 104 for filling the isolation zone 101 with sealing material 102. This makes it easier to observe the filling position of the sealing material, ensuring that the sealing material completely covers the explosive device 201, and improving the convenience of filling the sealing material.

[0039] To further ensure the airtightness of the isolation zone 101 and prevent the explosive device 201 from coming into contact with air, in some embodiments, such as Figure 3 and Figure 4 As shown, a cover plate 105 is provided at the opening of the enclosure 103, and a filling port 104 is formed on the cover plate 105, so that the filling equipment can fill the isolation zone 101 with sealing material 102 through the filling port 104 on the cover plate 105, thereby ensuring that the sealing material completely covers and wraps the explosive device 201, improving the sealing performance of the isolation zone 101. For example, it can be filled until the sealing material 102 overflows from the filling port 104.

[0040] In some embodiments, such as Figure 5 As shown, the isolation member 100 may include multiple isolation zones 101 to isolate multiple explosive devices 201, thereby ensuring the tightness of the sealing material 102 filling in each isolation zone 101, and thus giving each explosive device 201 in each isolation zone 101 better sealing performance, preventing the explosive device 201 in each isolation zone 101 from contacting air. Specifically, one or more partitions 106 can be provided in the isolation member 100 to form multiple isolation zones 101, and each isolation zone 101 may be provided with a filling port 104, so that the sealing material 102 can be filled into each isolation zone 101 through the filling port 104 to cover and wrap the explosive device, thereby isolating the explosive device 201 from contacting air.

[0041] The circuit board also includes a substrate 200, an explosive device 201 and an isolation component 100 fixedly disposed on the substrate 200.

[0042] In some embodiments, such as Figures 6 to 8As shown, the isolation element 100 may include multiple elements, that is, there may be two, three, four or more isolation elements 100, and the isolation area 101 of each isolation element 100 may accommodate a group of explosive devices 201. The number of explosive devices 201 in each group may be one, two, three, four or more, etc., which is not limited here. At the same time, each group of explosive devices 201 may be located in different mounting areas of the substrate 200, and may be arranged coaxially, in a matrix, or according to actual needs.

[0043] In some embodiments, the explosive device 201 may include film capacitors. These film capacitors can be arranged in a matrix to facilitate circuit routing and save space. This also facilitates the arrangement of the isolators 100, making their arrangement more concentrated, saving space, reducing the number of isolators 100, and lowering costs. Of course, the film capacitors can also be arranged according to requirements, and the isolators 100 can be positioned according to the arrangement of the film capacitors, making the arrangement of the isolators 100 more flexible.

[0044] This application also discloses a power conversion device, such as a photovoltaic inverter. The power conversion device includes a circuit board, which is the circuit board disclosed in the above embodiments, and therefore possesses all the technical effects of the circuit board described above, which will not be repeated here. The power conversion device can be an inverter, converter, etc., and is not limited thereto.

[0045] The terms "first" and "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units may include steps or units not listed, but rather not listed.

[0046] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily 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 this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A circuit board, characterized in that, include: substrate(200); An explosive device (201) is located on the substrate (200); An isolation member (100) has an isolation area (101) for accommodating the explosive device (201), the isolation area (101) being filled with a sealing material (102) to isolate the explosive device (201) from contact with air, the explosive device and the isolation member being fixed to the substrate (200).

2. The circuit board according to claim 1, characterized in that, The isolation element (100) includes a partition (103) that encloses to form the isolation area (101).

3. The circuit board according to claim 2, characterized in that, The height of the enclosure (103) is not less than the height of the explosive device (201).

4. The circuit board according to claim 2, characterized in that, The isolation element (100) also includes a filling port (104).

5. The circuit board according to claim 4, characterized in that, The filling port (104) is formed at the opening of the enclosure (103).

6. The circuit board according to claim 4, characterized in that, A cover plate (105) is provided at the opening of the enclosure (103), and the filling port (104) is formed in the cover plate (105).

7. The circuit board according to claim 1, characterized in that, The isolation element (100) is provided with one or more partitions (106) to form multiple isolation zones (101).

8. The circuit board according to claim 1, characterized in that, The isolation element (100) includes multiple isolation zones, each of the isolation zones (101) for accommodating a group of the explosive devices (201).

9. A power conversion device, comprising the circuit board as described in any one of claims 1 to 8.

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