Distribution box and electric appliance

Abstract

The utility model belongs to the technical field of distribution box, disclose a kind of distribution box and electrical equipment.The distribution box includes distribution box body, N plug-in and M sealing assembly, the outer wall of above-mentioned distribution box body is equipped with multiple plug-in holes;N above-mentioned plug-in can be one-to-one corresponding installation in at least part of multiple above-mentioned plug-in holes;M above-mentioned sealing assembly can be at least sealed connection in remaining part of above-mentioned multiple above-mentioned plug-in holes, above-mentioned sealing assembly is used to block above-mentioned plug-in hole.The distribution box can be suitable for different branch quantity battery system and electrical equipment, to reduce the development cost of distribution box, can satisfy dustproof waterproof requirement simultaneously, and higher use reliability.

Description

Technical Field

[0001] This utility model relates to the field of distribution box technology, and in particular to a distribution box and electrical equipment. Background Technology

[0002] As a key component of the power battery system for new energy commercial vehicles, the high-voltage distribution box is a core component that connects high-voltage equipment and realizes power distribution and safety management. Its role is involved in the entire process of charging and discharging, operation monitoring, and safety protection of the system. The high-voltage distribution box houses important electrical components such as the BMS main control unit, current sensors, current contactors, and fuses, therefore, the protection level requirement is IP67 or higher.

[0003] With the development of new energy commercial vehicles, end customers have a greater demand for the capacity of power battery systems to ensure longer driving range. Therefore, battery packs within power battery systems are being upgraded from single-circuit to dual-circuit or even multi-circuit systems to achieve greater capacity. However, regardless of the number of circuits, only one high-voltage distribution box is needed. Therefore, it is necessary to develop and design distribution boxes of different specifications to suit battery systems with varying numbers of circuits. Existing technologies also include designs for high-voltage distribution boxes that are backward compatible for platformization and high compatibility. This means the distribution box has multiple sets of connectors for different circuits. When used in battery systems with fewer circuits, additional connectors are needed to seal unused connectors. However, these connectors lack corresponding plugs, failing to achieve the required IP protection level, and the connectors are also expensive.

[0004] Therefore, there is an urgent need to provide a new type of distribution box and electrical equipment to solve the above-mentioned technical problems in the existing technology. Utility Model Content

[0005] The purpose of this utility model is to provide a distribution box that can be applied to battery systems and electrical equipment with different numbers of branches, thereby reducing the development cost of the distribution box, while meeting the requirements for dustproof and waterproof protection, and having higher reliability in use.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] The distribution box includes a box body, N connectors, and M sealing components. The outer wall of the box body has multiple insertion holes. The N connectors can be installed one-to-one with at least a portion of the multiple insertion holes, where N is a positive integer. The M sealing components can at least seal the remaining portions connected to the multiple insertion holes, and the sealing components are used to block the insertion holes, where M is a positive integer.

[0008] Optionally, the sealing assembly includes a sealing cover and a sealing gasket, the sealing gasket being sandwiched between the sealing cover and the outer wall of the distribution box, the sealing cover being fixed to the outer wall of the distribution box, and the covering area of ​​the sealing cover being larger than the longitudinal cross-sectional area of ​​the plug hole.

[0009] Optionally, the sealing cover plate has an installation groove at one end near the outer wall of the distribution box, and the sealing gasket is accommodated in the installation groove.

[0010] Optionally, the thickness of the sealing gasket is not less than the depth of the mounting groove.

[0011] Optionally, the aforementioned sealing gasket is made of an elastic element.

[0012] Optionally, when the sealing cover is fixed to the outer wall of the distribution box, the compression of the sealing gasket thickness is not less than 30%.

[0013] Optionally, the sealing gasket has a weight-reducing hole coaxial with the insertion hole.

[0014] Optionally, the outer wall of the distribution box is provided with a plurality of connection holes on the periphery of each of the aforementioned plug-in holes. The connection holes are used to insert connectors. The connectors and the sealing components are fixed to the outer wall of the distribution box by the plurality of the aforementioned connectors.

[0015] Optionally, the sealing gasket has a through hole coaxial with the connecting hole, and the connecting member is correspondingly inserted into the through hole.

[0016] Another objective of this utility model is to provide an electrical device that includes a distribution box as described in any of the above embodiments.

[0017] Beneficial effects:

[0018] The distribution box of this invention comprises a box body, N connectors, and M sealing components. The box body has multiple insertion holes corresponding to multi-branch circuit systems. At least some of these holes are used with connectors, the number of which corresponds to the number of circuit systems required. The remaining holes are sealed by the sealing components, ensuring that the dustproof and waterproof rating of unused holes meets usage requirements. Furthermore, it eliminates the need for additional connectors to seal unused holes, reducing component costs and providing better dustproof and waterproof performance. This distribution box is suitable for battery systems and electrical equipment with varying numbers of branch circuits, thus reducing development costs while meeting dustproof and waterproof requirements and offering higher reliability. Attached Figure Description

[0019] Figure 1This is an isometric view of the distribution box in Embodiment 1 of the present utility model;

[0020] Figure 2 This is an isometric view of the distribution box with the sealing component hidden in Embodiment 1 of the present utility model.

[0021] Figure 3 This is an isometric view of the distribution box in Embodiment 2 provided by the specific implementation of this utility model;

[0022] Figure 4 This is an isometric view of the sealing assembly provided in a specific embodiment of this utility model;

[0023] Figure 5 This is an exploded view of the sealing assembly provided in a specific embodiment of this utility model;

[0024] Figure 6 This is a longitudinal cross-sectional view of the sealing component provided in a specific embodiment of this utility model.

[0025] In the picture:

[0026] 100. Distribution box enclosure; 110. Plug-in hole; 120. Connection hole; 130. Connector;

[0027] 200. Connectors;

[0028] 300, Sealing assembly; 310, Sealing cover; 311, Mounting groove; 320, Sealing gasket; 321, Weight reduction hole; 322, Through hole. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0033] Example 1

[0034] Please refer to Figure 1 and Figure 2 In this embodiment, the distribution box includes a distribution box body 100, N connectors 200, and M sealing components 300. The outer wall of the distribution box body 100 is provided with a plurality of plug-in holes 110. The N connectors 200 can be installed one-to-one with at least a portion of the plurality of plug-in holes 110. The M sealing components 300 can at least seal the remaining portions of the plurality of plug-in holes 110. The sealing components 300 are used to block the plug-in holes 110, where M is a positive integer.

[0035] The distribution box in this embodiment consists of a box body 100, N connectors 200, and M sealing components 300. The box body 100 has multiple insertion holes 110, corresponding to multi-branch circuit systems. At least some of the insertion holes 110 are connected to connectors 200, with the number of connectors 200 corresponding to the number of circuit systems required. The remaining insertion holes 110 are sealed by the sealing components 300, ensuring that the dustproof and waterproof rating of the unused insertion holes 110 meets the usage requirements. Furthermore, it eliminates the need for additional connectors 200 to seal the unused insertion holes 110, reducing component costs and providing better dustproof and waterproof performance. This distribution box is suitable for battery systems and electrical equipment with different numbers of branch circuits, thereby reducing the development cost of the distribution box while meeting dustproof and waterproof requirements and offering higher reliability.

[0036] In this embodiment, the distribution box 100 has 6 plug-in holes 110, which can be used for a circuit system with up to three branches. Four of the plug-in holes 110 are connected to connectors 200, that is, the distribution box is used in a circuit system with two branches in this embodiment. The remaining two unused plug-in holes 110 are fitted with the aforementioned sealing components 300 to achieve the required waterproof and dustproof level.

[0037] It should be noted that the distribution box 100 can also be equipped with other numbers of plug holes 110, such as 8, 9, or 10, which will not be elaborated here. It is also understood that the sum of the number of plug-in components 200 and sealing components 300 does not necessarily equal the number of plug holes 110; it can be greater than the number of plug holes 100. For example, if there are N plug-in components 200, M sealing components 300, and P plug holes 110, that is, N of the P plug holes 110 are connected to plug-in components 200, where N ≤ P. Only PN sealing components 300 are used, with the remaining M-P+N sealing components 300 reserved as spares. When the distribution box is replaced for a circuit system with fewer branches, the excess sealing components 300 can seal the empty plug holes 110, achieving seamless connection and reducing replacement costs.

[0038] like Figure 4 As shown, the sealing assembly 300 includes a sealing cover plate 310 and a sealing gasket 320. The sealing gasket 320 is sandwiched between the sealing cover plate 310 and the outer wall of the distribution box 100. The sealing cover plate 310 is fixed to the outer wall of the distribution box 100, and the coverage area of ​​the sealing cover plate 310 is larger than the longitudinal cross-sectional area of ​​the insertion hole 110. In this embodiment, the sealing cover plate 310 is installed on the outer wall of the distribution box 100, and the sealing gasket 320 is sandwiched between the sealing cover plate 310 and the outer wall of the distribution box 100. The sealing gasket 320 is used to seal the insertion hole 110 by the sealing cover plate 310, resulting in a higher dustproof and waterproof rating.

[0039] like Figure 5 As shown, the sealing cover plate 310 has an installation groove 311 at one end near the outer wall of the distribution box 100, and the sealing gasket 320 is accommodated in the installation groove 311. The installation groove 311 can limit and fix the sealing gasket 320, preventing the sealing gasket 320 from falling off the sealing cover plate 310, thus improving the stability of the installation. In addition, the installation groove 311 can increase the contact area between the sealing gasket 320 and the sealing cover plate 310, thereby improving the sealing performance.

[0040] Optionally, the sealing gasket 320 is provided with a weight-reducing hole 321 coaxial with the insertion hole 110. The weight-reducing hole 321 can reduce the weight of the sealing gasket 320 and allow the sealing gasket 320 to extend towards the center after being compressed, providing a larger space to accommodate the radially extended portion of the sealing gasket 320 after compression, thereby improving the convenience of installation.

[0041] In this embodiment, the outer wall of the distribution box 100, and around each of the aforementioned plug-in holes 110, is provided with a plurality of connection holes 120. These connection holes 120 are used to pass through connectors 130. Both the connector 200 and the sealing assembly 300 are fixed to the outer wall of the distribution box 100 via these connectors 130. It should be noted that four connection holes 120 are provided around each plug-in hole 110 for installing the connector 200 and the sealing cover plate 310. The sealing cover plate 310 and the connector 200 are square in shape, with connectors 130, specifically connecting bolts, at each of their four corners. This securely fixes the sealing cover plate 310 and the connector 200 to the outer wall of the distribution box 100, resulting in better fixation and easier installation.

[0042] Optionally, the sealing gasket 320 has a through hole 322 coaxial with the connecting hole 120, and the connector 130 passes through the through hole 322. Thus, the sealing gasket 320 can seal not only the area around the insertion hole 110, but also the area around the connecting hole 120, further improving the sealing effect, which will not be elaborated here.

[0043] like Figure 6 As shown, the thickness of the sealing gasket 320 is not less than the depth of the mounting groove 311. This design allows the sealing gasket 320 to completely conform to the outer wall of the distribution box 100, resulting in a better sealing effect and achieving a higher level of dust and water resistance.

[0044] Furthermore, the aforementioned sealing gasket 320 is made of an elastic element. In use, after the sealing cover 310 is installed on the outer wall of the distribution box 100, the sealing gasket 320 can be compressed, thereby fitting more tightly to the outer wall of the distribution box 100, playing the role of interference connection, and thus further improving the sealing performance.

[0045] Optionally, when the sealing cover 310 is fixed to the outer wall of the distribution box 100, the compression of the thickness of the sealing gasket 320 is not less than 30%. Figure 6As shown, the total thickness of the sealing assembly 300 is L1, the total thickness of the sealing cover plate 310 is L2, the wall thickness of the sealing cover plate 310 after removing the mounting groove 311 is L3, that is, the depth of the mounting groove 311 is L2-L3, and the thickness of the sealing gasket 320 is L1-L3. After installation, the sealing gasket 320 is compressed to the same depth as the mounting groove 311, that is, the compression of the sealing gasket 320 is (L1-L3-L2) / (L1-L3), and (L1-L3-L2) / (L1-L3)≥30%, so as to achieve a better sealing effect.

[0046] In this embodiment, the compression of the sealing gasket 320 is 50% to achieve the best sealing effect, which will not be elaborated here.

[0047] Specifically, the sealing gasket 320 is made of elastic materials such as silicone gasket, rubber gasket, felt gasket, and foam gasket, which will not be described in detail here.

[0048] Example 2

[0049] like Figure 3 As shown, the only difference between the distribution box in this embodiment and the distribution box in the first embodiment is that this distribution box is applied to a three-branch circuit system, and all six plug holes 110 are equipped with the aforementioned connectors 200, without the application of the sealing component 300, which can still meet the required waterproof and dustproof level.

[0050] It should be noted that although the sealing component 300 is not used in this embodiment, the sealing component 300 still exists as a spare part. When the distribution box is replaced for a circuit system with fewer branches, the excess sealing component 300 can be used to seal the empty plug hole 110, so as to achieve seamless connection of the distribution box and reduce the replacement cost of the distribution box.

[0051] This embodiment also provides an electrical device, which includes a distribution box as described in any of the above solutions. Specifically, this electrical device can be a vehicle, a power generation system, an energy storage container, or a home appliance; in this embodiment, it is specifically a pure electric vehicle or a hybrid electric vehicle, which will not be elaborated further here. This electrical device possesses all the beneficial effects of the distribution box described in any of the above solutions. Specifically, the distribution box used can be applied to battery systems and electrical devices with different numbers of branches, thereby reducing the development cost of the distribution box, while meeting dustproof and waterproof requirements and achieving higher reliability.

[0052] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A distribution box, characterized in that include: The distribution box body (100) has multiple plug-in holes (110) on its outer wall; N connectors (200), wherein the N connectors (200) can be installed one-to-one with at least a portion of the plurality of plug holes (110), where N is a positive integer; M sealing components (300), each of the M sealing components (300) being capable of sealing at least the remaining portion connected to the plurality of the plug holes (110), the sealing components (300) being used to block the plug holes (110), where M is a positive integer.

2. The electrical distribution box of claim 1, wherein, The sealing assembly (300) includes a sealing cover plate (310) and a sealing gasket (320). The sealing gasket (320) is sandwiched between the sealing cover plate (310) and the outer wall of the distribution box body (100). The sealing cover plate (310) is fixed to the outer wall of the distribution box body (100), and the coverage area of ​​the sealing cover plate (310) is greater than the longitudinal cross-sectional area of ​​the plug hole (110).

3. The electrical distribution box of claim 2, wherein, The sealing cover (310) has an installation groove (311) at one end near the outer wall of the distribution box (100), and the sealing gasket (320) is housed in the installation groove (311).

4. The electrical distribution box of claim 3, wherein, The thickness of the sealing gasket (320) is not less than the depth of the mounting groove (311).

5. The electrical distribution box of claim 4, wherein, The sealing gasket (320) is made of an elastic element.

6. The electrical distribution box of claim 5, wherein, When the sealing cover (310) is fixed to the outer wall of the distribution box (100), the compression of the thickness of the sealing gasket (320) is not less than 30%.

7. The electrical distribution box of claim 2, wherein, The sealing gasket (320) has a weight-reducing hole (321) that is coaxial with the insertion hole (110).

8. The electrical distribution box of claim 7, wherein, The outer wall of the distribution box (100) is provided with a plurality of connection holes (120) on the outer periphery of each of the plug holes (110). The connection holes (120) are used to pass through the connectors (130). The connectors (200) and the sealing components (300) are fixed to the outer wall of the distribution box (100) by the plurality of connectors (130).

9. The electrical distribution box of claim 8, wherein, The sealing gasket (320) has a through hole (322) coaxial with the connecting hole (120), and the connector (130) is correspondingly inserted into the through hole (322).

10. An electrical device, characterized by Includes the distribution box as described in any one of claims 1-9.

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