A box of an inverter and an inverter

Abstract

The utility model discloses an inverter's box and inverter, inverter's box includes, shell, and the shell has the accommodation cavity, baffle, baffle is fixed in the shell, makes the accommodation cavity is divided into wiring cavity and power cavity, wiring cavity can accommodate the electrical switch and cable of inverter, and power cavity can accommodate the power device of inverter, sealing assembly, sealing assembly includes at least one sealing piece, and sealing piece sealing connection is in baffle, and sealing piece has the inner chamber of through, and inner chamber links together wiring cavity and power cavity, can make cable pass through, and sealing piece and cable sealing connection. Through baffle, can separate wiring cavity and power cavity, be favorable to avoid the water vapor in wiring cavity and enter power cavity, through sealing assembly, can make cable and set up in wiring cavity and power cavity, and make the sealed connection between cable and baffle, further reduce the risk of water vapor in wiring cavity and enter power cavity, thereby improve the reliability and security of inverter.

Description

Technical Field

[0001] This utility model relates to the field of inverter technology, and in particular to an inverter housing and an inverter. Background Technology

[0002] In inverters, the wiring compartment and the power compartment are usually physically separated by a simple frame. While this structure facilitates the connection of internal cables, it does not effectively block the moisture migration path between the wiring compartment and the power compartment. Moisture can easily diffuse from the wiring compartment to the power compartment through gaps, and over time it will corrode the critical power components in the power compartment. This will not only affect the reliability of the inverter, but may also cause safety hazards. Utility Model Content

[0003] One object of this invention is to provide an inverter enclosure that solves or at least partially alleviates at least one of the defects in the aforementioned background art.

[0004] Another objective of this invention is to provide an inverter having the aforementioned housing.

[0005] To achieve at least one of the above objectives, the technical solution adopted by this utility model is as follows: an inverter housing, comprising: an outer shell having a receiving cavity; a partition fixed to the outer shell, such that the receiving cavity is divided into a wiring cavity and a power cavity, the wiring cavity accommodating the inverter's electrical switches and cables, and the power cavity accommodating the inverter's power devices; and a sealing assembly comprising at least one sealing element, the sealing element being sealed to the partition, the sealing element having a through-hole inner cavity communicating with the wiring cavity and the power cavity, allowing cables to pass through, and the sealing element being sealed to the cables.

[0006] As a preferred embodiment, the wiring cavity has a first opening facing the front side of the inverter housing, thereby connecting the wiring cavity to the outside; the inverter housing also includes a first cover, which is closably connected to the outer casing to cover the first opening; the sealing assembly includes a plurality of the sealing elements, each of the sealing elements being spaced apart and located on the side of the partition near the first opening.

[0007] As a preferred embodiment, the seal is a waterproof cable connector.

[0008] As a preferred embodiment, the inverter enclosure further includes a branch base, which has a plurality of cable passages through which cables can pass, and the branch base is sealed to the cables; the branch base is housed within the cavity of the waterproof cable connector for a sealed connection with the waterproof cable connector.

[0009] Preferably, the wiring cavity is located above the power cavity.

[0010] As a preferred embodiment, the partition plate has a groove, which collects the liquid in the wiring cavity.

[0011] As a preferred embodiment, the sealing assembly is located within the groove, and the sealing assembly is sealed to the bottom of the groove.

[0012] As a preferred embodiment, the inverter housing also includes a valve, which is installed on the housing and connects the recess to the outside, so that liquid in the recess can be discharged to the outside through the valve.

[0013] As a preferred embodiment, the valve is a one-way valve, through which the liquid in the groove can be discharged to the outside.

[0014] To achieve at least one of the above objectives, the technical solution adopted by this utility model is: an inverter, comprising: the inverter housing as described above.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: The partition separates the wiring chamber and the power chamber, which helps prevent moisture from entering the power chamber from the wiring chamber. The sealing component allows cables to pass through the wiring chamber and the power chamber, and the cables can then connect to power devices and electrical switches. Furthermore, the sealing component ensures a sealed connection between the cables and the partition, further reducing the risk of moisture from the wiring chamber entering the power chamber, thereby improving the reliability and safety of the inverter. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the enclosure of an inverter according to some embodiments of this application.

[0017] Figure 2 This is a schematic diagram of the wiring compartment and power compartment of an inverter housing according to some embodiments of this application.

[0018] Figure 3 This is a schematic diagram of the heat dissipation cavity of the inverter housing according to some embodiments of this application.

[0019] Figure 4 This is a schematic diagram of the internal structure of the inverter housing according to some embodiments of this application.

[0020] Figure 5 This is an exploded view of the enclosure of an inverter according to some embodiments of this application.

[0021] Figure 6 This is a schematic diagram of a seal for the housing of an inverter according to some embodiments of this application.

[0022] Figure 7 This is a cross-sectional view of a seal of an inverter housing according to some embodiments of this application.

[0023] Figure 8 This is a schematic diagram of another seal for the housing of an inverter according to some embodiments of this application.

[0024] Figure 9 This is a schematic diagram of another seal for the housing of an inverter according to some embodiments of this application.

[0025] In the diagram: 1. Housing; 10. Outer shell; 11. Receiving cavity; 12. First outer shell; 121. Wiring cavity; 122. First opening; 123. Clearance hole; 13. Second outer shell; 131. Power cavity; 132. Second opening; 133. Light hole; 14. Third outer shell; 141. Heat dissipation cavity; 20. Partition plate; 21. Groove; 30. First cover; 40. Second cover; 50. Sealing assembly; 51. Seal; 511. Inner cavity; 52. Branching base; 521. Wiring channel; 53. Plug; 61. Electrical switch; 62. Controller; 63. Control panel; 71. First heat sink; 72. Second heat sink; 73. Cooling fan; 80. Power device. Detailed Implementation

[0026] The present invention will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0027] In the description of this utility model, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0028] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0029] An inverter housing 1, such as Figures 1-9As shown, the device includes: a housing 10, a partition 20, and a sealing assembly 50. Specifically, the housing 10 has a receiving cavity 11; the partition 20 is fixed to the housing 10, such that the receiving cavity 11 is divided into a wiring cavity 121 and a power cavity 131. The wiring cavity 121 accommodates the inverter's electrical switch 61 and cables, and the power cavity 131 accommodates the inverter's power devices 80. The sealing assembly 50 includes at least one seal 51, which is sealingly connected to the partition 20. The seal 51 has a through-hole cavity 511 that connects the wiring cavity 121 and the power cavity 131, allowing cables to pass through, and the seal 51 is sealingly connected to the cables.

[0030] This should be understandable, such as Figure 2 and Figure 4 As shown, the partition 20 can separate the wiring cavity 121 and the power cavity 131, which helps to prevent moisture in the wiring cavity 121 from entering the power cavity 131. The sealing assembly 50 allows the cable to pass through the wiring cavity 121 and the power cavity 131, so that the cable can connect the power device 80 and the electrical switch 61. Furthermore, the sealing assembly 50 can seal the connection between the cable and the partition 20, further reducing the risk of moisture in the wiring cavity 121 entering the power cavity 131, thereby improving the reliability and safety of the inverter.

[0031] In at least one embodiment, the partition 20 is configured as a single plate. Specifically, the partition 20 is sealed to the housing 10 by welding or other means to divide the receiving cavity 11 into a wiring cavity 121 and a power cavity 131.

[0032] In at least one embodiment, such as Figure 4 and Figure 5 As shown, the partition 20 is configured as a two-layer plate. Specifically, the housing 10 includes a first housing 12 and a second housing 13. The first housing 12 forms a wiring cavity 121, and the second housing 13 forms a power cavity 131. The first housing 12 and the second housing 13 are arranged side by side, with two sidewalls of the first housing 12 and the second housing 13 that fit together defining the partition 20. It should be understood that this arrangement facilitates separate sealing of the second housing 13 to improve the sealing performance of the power cavity 131 and ensure the safe and reliable operation of the internal power devices 80; while the wiring cavity 121 has relatively lower requirements for sealing performance, the sealing performance of the first housing 12 can be appropriately simplified to reduce costs.

[0033] In at least one embodiment, such as Figure 3As shown, the outer casing 10 also includes a third outer casing 14, which forms a heat dissipation cavity 141. The heat dissipation cavity 141 accommodates a heat dissipation assembly, which includes, but is not limited to, a first heat sink 71 with fins, a second heat sink 72 with a sealed cavity, and a cooling fan 73. It should be understood that the heat dissipation assembly can more efficiently reduce the temperature of the power device 80 and the power cavity 131, thereby helping to ensure the stable operation of the inverter.

[0034] In some embodiments, such as Figure 2 , Figure 4 and Figure 5 As shown, the wiring cavity 121 has a first opening 122 facing the front of the inverter housing 1, thus connecting the wiring cavity 121 to the outside, facilitating maintenance of the electrical switches 61, cable connections, controller 62, etc., inside the wiring cavity 121. Furthermore, the inverter housing 1 also includes a first cover 30, which is detachably connected to the outer casing 10 to cover the first opening 122. A control panel 63 can also be installed on the first cover 30, facilitating the setting and operation of the inverter.

[0035] Furthermore, such as Figure 4 and Figure 5 As shown, the sealing assembly 50 includes multiple sealing elements 51, which are spaced apart and located on the side of the partition 20 near the first opening 122. That is, several sealing elements 51 are arranged in a line along the edge of the partition 20 near the first opening 122, and are spaced apart. This helps to avoid interference from electrical switches 61, controllers 62, etc., on the operation of the cable routing, thereby improving the convenience of cable routing and increasing the assembly efficiency of the inverter.

[0036] It is worth mentioning that, depending on the specific number of cables and the arrangement of electrical switches 61, controllers 62, etc. in the wiring cavity 121, the number of seals 51 can also be set in two or more rows. This application does not impose any specific restrictions on this.

[0037] In some embodiments, such as Figure 2 , Figure 4 and Figure 5 As shown, the power cavity 131 has a second opening 132 facing the front of the inverter housing 1, thus connecting the power cavity 131 to the outside, facilitating the maintenance of power devices 80 and the like within the power cavity 131. Furthermore, the inverter housing 1 also includes a second cover 40, which is detachably connected to the outer casing 10 to cover the second opening 132.

[0038] It should be understood that the first cover 30 and the second cover 40 can be opened and closed independently of each other, so that when the electrical switches 61, controllers 62, cables, etc. in the wiring cavity 121 are inspected and maintained, the power cavity 131 can be kept sealed, thereby improving the reliability and safety of the inverter.

[0039] In some embodiments, such as Figures 4-9 As shown, the seal 51 is a waterproof cable connector, also known as a cable gland. It should be understood that various specifications of waterproof cable connectors are available on the market to meet different wiring requirements. Implementing the seal 51 as a waterproof cable connector helps reduce the design and manufacturing difficulty of the inverter enclosure 1. Furthermore, only the aperture 133 needs to be machined on the partition 20 to meet the installation requirements of the waterproof cable connector, further reducing the processing difficulty and cost of the partition 20, which is beneficial for mass production of the inverter enclosure 1. The waterproof cable connector also serves to clamp and secure the cables, helping to prevent them from being accidentally pulled out during maintenance.

[0040] It is worth mentioning that the sealing assembly 50 may include various types of waterproof cable connectors to meet the diverse wiring requirements of the inverter. This application does not impose specific restrictions on the specifications of the waterproof cable connectors.

[0041] In some embodiments, such as Figure 6 and Figure 7 As shown, the inverter housing 1 also includes a branch base 52, which has several cable passages 521 through which cables can pass, and the branch base 52 is sealed to the cables; the branch base 52 is housed in the inner cavity 511 of the cable waterproof connector for sealed connection with the cable waterproof connector.

[0042] It should be understood that inverters typically contain multiple smaller diameter cables. The cable distribution base 52 allows these thinner cables to pass through a single waterproof cable connector, with each cable forming a sealed connection with the connector. This design reduces the total number of waterproof cable connectors, thereby lowering the manufacturing cost of the inverter housing 1. It also reduces the number and density of optical holes 133 on the partition 20, thus improving the structural strength of the partition 20 and reducing its processing difficulty.

[0043] In some embodiments, such as Figure 6 and Figure 7As shown, the inverter enclosure 1 also includes a plug 53, which is adapted to the cable passage 521 of the branch base 52, allowing it to be detachably fitted with the cable passage 521. Specifically, when there is redundancy in the cable passage 521, the plug 53 can seal the cable passage 521; when adding cables to the inverter, the plug 53 can be removed, allowing the new cables to pass through the cable passage 521. In other words, the redundant cable passage 521 in the enclosure 1 facilitates upgrades and modifications to the inverter; it also allows one enclosure 1 to be used with inverters of different configurations, thus expanding the applicability of the enclosure 1.

[0044] In some embodiments, such as Figure 4 and Figure 5 As shown, the wiring cavity 121 is located above the power cavity 131, which facilitates the use of heat dissipated by the power device 80 to dry the liquid on the partition 20, thus keeping the wiring cavity 121 dry. It should be understood that the hot air in the power cavity 131 rises due to its lower density, and the wiring cavity 121, located above the power cavity 131, can make more efficient use of the heat of the hot air.

[0045] It is worth mentioning that the wiring cavity 121 can also be located below the power cavity 131, or it can be located to the left or right of the power cavity 131. This application does not impose any specific restrictions on this.

[0046] In some embodiments, such as Figure 4 As shown, a groove 21 is provided on the partition 20. The groove 21 can collect the liquid in the wiring cavity 121, thereby reducing the risk of the liquid in the wiring cavity 121 flowing out from other gaps. For example, it helps to prevent the liquid from flowing out from the gap between the first cover 30 and the outer shell 10.

[0047] In some embodiments, such as Figure 4 As shown, the sealing component 50 is located within the groove 21, and the sealing component 50 is sealed to the bottom of the groove 21. It should be understood that by setting the groove 21, the thickness of the partition 20 can be appropriately reduced; that is, the thickness of the bottom of the groove 21 is less than the thickness of the rest of the partition 20. Therefore, the bottom of the groove 21 is more conducive to the installation of the sealing component 50, improving the sealing performance between the sealing component 50 and the partition 20. Especially when the seal 51 is implemented as a cable waterproof connector, to ensure the sealing performance between the cable waterproof connector and the partition 20, the thickness of the partition 20 cannot exceed the effective length of the cable waterproof connector's thread.

[0048] In at least one embodiment, as described above, the housing 10 includes a first housing 12 and a second housing 13, wherein two sidewalls of the first housing 12 and the second housing 13 that fit together define a partition 20. It should be understood that if the thickness of both the first housing 12 and the second housing 13 is 2mm, then the thickness of the partition 20 is 4mm, and some commonly used waterproof cable connectors are suitable for installation on plates with a thickness of 1.5mm-4.0mm. To ensure that waterproof cable connectors of various specifications in the sealing assembly 50 can be installed on the partition 20 and have good sealing performance, such as... Figure 5 As shown, a light hole 133 can be opened on the second housing 13 for installing a cable waterproof connector; a larger clearance hole 123 can be opened on the first housing 12 to avoid the cable waterproof connector; thus, cable waterproof connectors of various specifications can be installed on the second housing 13 with a plate thickness of 2mm, and when the first housing 12 and the second housing 13 are assembled, a groove 21 is formed between the clearance hole 123 on the first housing 12 and the second housing 13.

[0049] In other embodiments, when the bottom of the groove 21 is too thin to be suitable for installing the sealing component 50, the sealing component 50 may also be misaligned with the groove 21 and disposed on the partition 20.

[0050] In some embodiments, the inverter housing 1 further includes a valve (not shown), which is installed on the housing 10 and connects the recess 21 to the outside, so that liquid in the recess 21 can be discharged to the outside through the valve. It should be understood that the valve can quickly and efficiently discharge the liquid in the recess 21, which helps to avoid excessive humidity in the wiring cavity 121, thereby helping to prevent cables, electrical switches 61, controllers 62, etc. from being corroded and damaged by moisture.

[0051] It is worth mentioning that the valve can be implemented as a manual valve, which can be opened by maintenance personnel in a timely manner to allow the liquid in the groove 21 to be discharged; the valve can also be implemented as an electric valve, solenoid valve, etc., to facilitate automated control; this application does not impose specific restrictions on the valve opening method.

[0052] In some embodiments, the valve is a one-way valve, so that the liquid in the groove 21 can be discharged to the outside through the one-way valve; and the one-way valve can effectively prevent external water vapor from entering the wiring cavity 121, so that the wiring cavity 121 is kept dry, thereby improving the reliability and safety of the inverter.

[0053] An inverter includes a housing 1 as described above. Specifically, the housing 1 has a separately configured wiring cavity 121 and a power cavity 131. The wiring cavity 121 accommodates the inverter's electrical switch 61 and cables, while the power cavity 131 accommodates the inverter's power devices 80. It should be understood that the separation of the wiring cavity 121 and the power cavity 131 by the partition 20 helps prevent moisture from the wiring cavity 121 from entering the power cavity 131. Furthermore, the housing 1 is provided with a sealing assembly 50, allowing cables to pass through the wiring cavity 121 and the power cavity 131. The cables can then connect the power devices 80 and the electrical switch 61. The sealing assembly 50 also provides a sealed connection between the cables and the partition 20, further reducing the risk of moisture from the wiring cavity 121 entering the power cavity 131, thereby improving the reliability and safety of the inverter.

[0054] The basic principles, main features, and advantages of this utility model have been described above. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A casing for an inverter, characterized in that, include: The outer casing has a receiving cavity; A partition, fixed to the housing, divides the receiving cavity into a wiring cavity and a power cavity, wherein the wiring cavity accommodates the inverter's electrical switches and cables, and the power cavity accommodates the inverter's power devices; A sealing assembly comprising at least one sealing element sealed to the partition, the sealing element having a through-hole cavity communicating with the wiring cavity and the power cavity, allowing a cable to pass through, and the sealing element being sealed to the cable.

2. The inverter housing according to claim 1, characterized in that, The wiring cavity has a first opening facing the front of the inverter housing, thereby connecting the wiring cavity to the outside; the inverter housing also includes a first cover, which is detachably connected to the outer casing to cover the first opening. The sealing assembly includes a plurality of the sealing elements, each of which is spaced apart and located on the side of the partition near the first opening.

3. The inverter housing according to claim 1, characterized in that, The sealing element is a waterproof cable connector.

4. The inverter housing according to claim 3, characterized in that, The inverter enclosure also includes a branch base, which has several cable passages through which cables can pass, and the branch base is sealed to the cables; the branch base is housed in the inner cavity of the cable waterproof connector for a sealed connection with the cable waterproof connector.

5. The inverter housing according to any one of claims 1-4, characterized in that, The wiring cavity is located above the power cavity.

6. The inverter housing according to claim 5, characterized in that, The partition plate has a groove, which collects the liquid in the wiring cavity.

7. The inverter housing according to claim 6, characterized in that, The sealing assembly is located within the groove and is sealed to the bottom of the groove.

8. The inverter housing according to claim 6, characterized in that, The inverter enclosure also includes a valve, which is installed on the outer casing and connects the groove to the outside, so that liquid in the groove can be discharged to the outside through the valve.

9. The inverter housing according to claim 8, characterized in that, The valve is a one-way valve, through which the liquid in the groove can be discharged to the outside.

10. An inverter, characterized in that, include: The inverter housing as described in any one of claims 1-9.

Images