Protective part for busbar and circuit breaker assembly

Abstract

The utility model provides a protection member used for a busbar and a circuit breaker assembly, the protection member used for the busbar comprises a housing which is provided with an accommodating cavity, a first opening and a second opening, the first opening and the second opening are respectively communicated with the accommodating cavity, and a connecting end of the busbar is arranged in the accommodating cavity through the first opening; the second opening is aligned with the connecting end to expose at least part of the connecting end, and the connecting end is electrically connected with the external assembly through the second opening. By applying the technical scheme of the utility model, the busbar can be insulated and protected.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and particularly relates to a protection part for a bus bar and a circuit breaker assembly. Background Art

[0002] In the related art, a BDU (Battery Disconnect Unit) battery pack disconnection unit is designed specifically for the inside of a battery pack and is used as a distribution box. When the battery pack system reports an error, the BDU can cut off the internal current of the battery pack to ensure system safety. Among them, the BDU unit generally includes a BDU box body and electrical components encapsulated inside the BDU box body. Some wiring terminals of the electrical components need to be exposed relative to the outside of the BDU box body so that the electrical components of the BDU unit can be electrically connected to the bus bar. However, the connection between the bus bar and the electrical components of the BDU unit is usually exposed, which is prone to safety risks such as electric shock. Summary of the Utility Model

[0003] An embodiment of the utility model provides a protection part for a bus bar and a circuit breaker assembly, which can insulate and protect the bus bar.

[0004] In a first aspect, an embodiment of the utility model provides a protection part for a bus bar. The protection part for the bus bar includes: a housing having a receiving cavity and a first opening and a second opening respectively communicating with the receiving cavity. The connecting end of the bus bar is disposed in the receiving cavity through the first opening, and the second opening is disposed opposite to the connecting end to expose at least a part of the connecting end of the bus bar. The connecting end is electrically connected to an external component through the second opening.

[0005] In an embodiment, the connecting end of the bus bar has a fixing hole. The housing further includes a third opening. The third opening, the second opening and the fixing hole are disposed opposite to each other in a first direction. A fixing member is sequentially passed through the third opening, the fixing hole and the second opening to electrically connect the bus bar to the external component.

[0006] In an embodiment, the protection part for the bus bar further includes a cover body. The housing further includes a third opening opposite to the connecting end. The protection part for the bus bar further includes a cover body which is covered at the third opening. Wherein, the cover body has an open state and a closed state.

[0007] In an embodiment, a connecting structure is disposed between the cover body and the housing. One end of the connecting structure is connected to the housing, and the other end of the connecting structure is connected to the cover body. The connecting structure can be bent to switch the cover body between the open state and the closed state.

[0008] In one embodiment, the protection member for the busbar further includes a clamping member and a clamping groove. The clamping member is disposed on one of the cover body and the housing, and the clamping groove is disposed on the other of the cover body and the housing. The clamping member and the clamping groove extend along a first direction. When the cover body is in the closed state, the clamping member is engaged with the clamping groove to limit the displacement of the cover body.

[0009] In one embodiment, the protection member for the busbar further includes a protruding portion and a stepped structure. The protruding portion protrudes circumferentially around the inner wall of one of the cover body and the housing, and the protruding portion extends along the first direction. The stepped structure is disposed on the other of the cover body and the housing, and the stepped structure is correspondingly disposed with the protruding portion. When the cover body is in the closed state, the protruding portion is located within the stepped structure.

[0010] In one embodiment, the connecting structure includes a first section and a second section connected in sequence. The first section is connected to the cover body, and the second section is connected to the housing. The first section is capable of bending relative to the second section to enable the cover body to switch between the open state and the closed state.

[0011] In one embodiment, the second opening and the third opening include circular openings, and the diameter of the second opening is greater than or equal to the diameter of the third opening.

[0012] In one embodiment, the housing, the connecting structure and the cover body are an integrally formed structure.

[0013] In a second aspect, an embodiment of the present invention provides a circuit breaker assembly, which includes: the above-mentioned protection member for the busbar; a circuit breaker having an external connection end, and the external connection end is electrically connected to the connection end of the busbar through a fixing member.

[0014] Applying the technical solution of the present invention, a first opening and a second opening are provided on the housing. The connection end of the busbar is disposed in the accommodation cavity through the first opening, and at least a part of the connection end is exposed through the second opening to be electrically connected to an external component. In this way, not only can the connection end of the busbar be insulated and protected by the housing to reduce safety risks such as electric shock, but also the safety of the busbar during use is improved. At the same time, through the second opening, the busbar can be electrically connected to the external component to meet the usage requirements of the busbar. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1It is a three-dimensional schematic diagram of a protective component for a busbar provided by an embodiment of the present utility model;

[0017] Figure 2 It is a three-dimensional schematic diagram of another perspective of a protective component for a busbar provided by an embodiment of the present utility model;

[0018] Figure 3 It is a three-dimensional schematic diagram of yet another perspective of a protective component for a busbar provided by an embodiment of the present utility model;

[0019] Figure 4 It is a top view schematic diagram of a protective component for a busbar provided by an embodiment of the present utility model;

[0020] Figure 5 is Figure 4 a sectional schematic diagram at A-A in

[0021] Figure 6 It is an installation schematic diagram of a protective component for a busbar, a busbar, and a fixing member provided by an embodiment of the present utility model;

[0022] Figure 7 It is a structural schematic diagram of a busbar provided by an embodiment of the present utility model;

[0023] Figure 8 It is a structural schematic diagram of a circuit breaker assembly provided by an embodiment of the present utility model.

[0024] Among them, the above-mentioned drawings include the following reference numerals:

[0025] 10. Housing; 11. Accommodating cavity; 111. First chamber; 112. Second chamber; 12. First opening; 13. Second opening; 14. Third opening;

[0026] 20. Busbar; 21. Fixing hole; 22. Insulating member;

[0027] 30. Cover body;

[0028] 40. Connection structure; 41. First section; 42. Second section;

[0029] 51. Clamping member; 52. Clamping groove;

[0030] 61. Protrusion; 62. Step structure;

[0031] 70. Circuit breaker; 80. Fixing member;

[0032] X. First direction. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

[0034] As Figures 1 to 7 shown, in a first aspect, an embodiment of the present invention provides a protective member for a bus bar 20. The protective member for the bus bar 20 includes: a housing 10 having a receiving cavity 11 and a first opening 12 and a second opening 13 respectively communicating with the receiving cavity 11. The connecting end of the bus bar 20 is disposed in the receiving cavity 11 through the first opening 12, and the second opening 13 is disposed opposite to the connecting end to expose at least a part of the connecting end of the bus bar 20. The connecting end is electrically connected to an external component through the second opening 13.

[0035] Applying the technical solution of the present invention, the first opening 12 and the second opening 13 are provided on the housing 10. The connecting end of the bus bar 20 is disposed in the receiving cavity 11 through the first opening 12, and at least a part of the connecting end is exposed through the second opening 13 to be electrically connected to an external component. In this way, not only can the connecting end of the bus bar 20 be insulated and protected by the housing 10 to reduce safety risks such as electric shock, but also the safety of the bus bar 20 during use is improved. At the same time, the bus bar 20 can be electrically connected to an external component through the second opening 13 to meet the use requirements of the bus bar 20.

[0036] In this application, X is specifically the first direction.

[0037] Specifically, the connecting end of the bus bar 20 has a fixing hole 21. The housing 10 further includes a third opening 14. The third opening 14, the second opening 13, and the fixing hole 21 are disposed opposite to each other in the first direction. A fixing member 80 is sequentially passed through the third opening 14, the fixing hole 21, and the second opening 13 to electrically connect the bus bar 20 to an external component. This setting facilitates providing sufficient space for the fixing member 80 to fix the above components, thereby improving the installation and disassembly efficiency between the components.

[0038] In the present application, the fixing member 80 is specifically a bolt. As a common connection method, bolt fixing has the characteristic of strong load-bearing capacity. By applying a certain torque, the bus bar 20 is firmly connected to the external component, and can bear a large load. At the same time, it is convenient to disassemble. When it is necessary to repair, replace or adjust parts, only tools such as wrenches can be used to easily disassemble it, greatly improving work efficiency. And the installation process of bolt connection is relatively simple. Just pass the bolt through the third opening 14, the fixing hole 21 and the second opening 13, and then tighten the nut to complete the installation of the above components, thereby improving the installation efficiency of the components. Moreover, the bolt has strong anti-loosening ability, so it can effectively prevent connection loosening caused by factors such as vibration or oscillation, thus ensuring the stability and reliability of bolt fixing in various complex environments.

[0039] Furthermore, the protective member for the bus bar 20 further includes a cover body 30, and the cover body 30 covers the third opening 14; wherein, the cover body 30 has an open state and a closed state. When the cover body 30 is in the open state, the fixing member 80 can be sequentially passed through and connected with the third opening 14, the fixing hole 21 and the second opening 13. When the cover body 30 is in the closed state, the cover body 30 covers the third opening 14. With such a setting, when it is necessary to install the bus bar 20 and the external component, the cover body 30 is set to the open state, and the above components can be fixedly connected. Then the cover body 30 is set to the closed state to prevent external substances from contacting the connection end of the bus bar 20 and affecting the normal operation of the bus bar 20, so as to improve the safety of the bus bar 20 during use.

[0040] Specifically, a connection structure 40 is provided between the cover body 30 and the housing 10. One end of the connection structure 40 is connected to the housing 10, and the other end of the connection structure 40 is connected to the cover body 30. The connection structure 40 can be bent to switch the cover body 30 between the open state and the closed state. In the present application, the connection structure 40 has elasticity. With such a setting, the opening requirement of the cover body 30 can be met.

[0041] Of course, in other embodiments of the present application, the connection structure 40 between the cover body 30 and the housing 10 can also be set as other types such as a rotating shaft structure, as long as it can meet the opening and closing requirements of the cover body 30.

[0042] Furthermore, the protective member for the busbar 20 further includes a clamping member 51 and a clamping groove 52, wherein the clamping member 51 is disposed on one of the cover body 30 and the housing 10, and the clamping groove 52 is disposed on the other of the cover body 30 and the housing 10, and the clamping member 51 and the clamping groove 52 extend along a first direction, and when the cover body 30 is in a closed state, the clamping member 51 and the clamping groove 52 are clamped and matched to limit the displacement of the cover body 30. By providing the above structure, when the cover body 30 is in a closed state, the elastic force of the connecting structure 40 can prevent the cover body 30 from being moved from a closed state to an open state, thereby ensuring the stability of the cover body 30 when it is closed. At the same time, the clamping member 51 and the clamping groove 52 are formed together, so they have high precision and reliability when connected, and can also reduce costs and improve production efficiency.

[0043] Specifically, the protective member for the busbar 20 further includes a protrusion 61 and a step structure 62, wherein the protrusion 61 is arranged on the inner wall of one of the cover body 30 and the housing 10 and protrudes along the circumferential direction of the cover body 30, the protrusion 61 extends along the first direction, and the step structure 62 is arranged on the other of the cover body 30 and the housing 10, and the step structure 62 is arranged corresponding to the protrusion 61, and when the cover body 30 is in the closed state, the protrusion 61 is located in the step structure 62. In this arrangement, the step structure 62 and the protrusion 61 can be used to cooperate with each other to realize the positioning of the cover body 30 when switching from the open state to the closed state, thereby improving the closing efficiency of the cover body 30.

[0044] Furthermore, the accommodating chamber 11 includes a first chamber 111 and a second chamber 112 which are interconnected, the first opening 12 is arranged corresponding to the first chamber 111, the second opening 13 and the third opening 14 are arranged corresponding to the second chamber 112, and the cross-sectional area of ​​the first chamber 111 in the first direction is larger than the cross-sectional area of ​​the second chamber 112 in the first direction. In this way, a larger escape space can be provided for the bus 20, and when the outside of the bus 20 is wrapped with other structures, the bus 20 can still be arranged in the accommodating chamber 11. In the present application, at least part of the bus 20 is also wrapped with an insulating member 22. By setting the above structure, the part of the bus 20 exposed outside the protective member can be prevented from contacting with foreign substances and reducing stability during use. The second chamber 112 can accommodate part of the insulating member 22, so it is convenient to install the protective member and the bus 20.

[0045] In the present application, the connection structure 40 includes a first section 41 and a second section 42 connected in sequence, the first section 41 is connected to the cover 30, the second section 42 is connected to the housing 10, and the first section 41 can be bent relative to the second section 42 to switch the cover 30 between the open state and the closed state. This arrangement can not only ensure that the connection between the connection structure 40 and the housing 10 is firmly connected, but also meet the requirements of opening and closing the cover 30.

[0046] Specifically, the second opening 13 and the third opening 14 include circular openings, and the diameter of the second opening 13 is greater than or equal to the diameter of the third opening 14. The above structure is simple and easy to process, which can not only meet the installation requirements between components, but also reduce the production cost of the protective part.

[0047] Furthermore, the housing 10, the connecting structure 40 and the cover 30 are integrally formed structures. Since there are no welding or assembly steps in the manufacturing process of the integrally formed structure, its overall strength and stability are higher, thus improving the reliability and durability of the protective part. At the same time, the integral forming technology can significantly improve production efficiency and reduce production costs, thereby shortening the production cycle, reducing the scrap rate, and further reducing the production cost of the protective part, which is convenient for realizing the mass production of the protective part.

[0048] In this application, the protective part for the busbar 20 is made of nylon material. Since the nylon material has high mechanical strength, good toughness, high tensile and compressive strength, at the same time, the nylon material has outstanding fatigue resistance and can still maintain its original mechanical strength after repeated folding many times, and the nylon material has a high softening point and can maintain stable performance at a relatively high temperature. Therefore, the protective performance of the protective part can be ensured.

[0049] As Figure 8 shown, in the second aspect, an embodiment of the present invention provides a circuit breaker 70 assembly, and the circuit breaker 70 assembly includes: the above-mentioned protective part for the busbar 20; a circuit breaker 70 having an external connection end, and the external connection end is electrically connected to the connection end of the busbar 20 through a fixing member 80.

[0050] Applying the technical solution of the present invention, a first opening 12 and a second opening 13 are provided on the housing 10, the connection end of the busbar 20 is arranged in the accommodation cavity 11 through the first opening 12, and at least part of the connection end is exposed through the second opening 13 to be electrically connected to an external component. In this way, not only can the connection end of the busbar 20 be insulated and protected by the housing 10 to reduce the risk of electric shock, but also the safety of the busbar 20 during use is improved. At the same time, through the second opening 13, the busbar 20 can be electrically connected to an external component to meet the use requirements of the busbar 20.

[0051] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof. Unless otherwise specifically stated, the relative arrangements of components and steps set forth in these embodiments, numerical expressions, and numerical values do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0052] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present invention; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0053] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above", etc. can be used herein to describe the spatial positional relationship between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the figure of the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used herein.

[0054] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Without additional declaration, the above terms have no special meaning, and thus should not be construed as a limitation on the protection scope of the present utility model.

[0055] The above 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, the present utility model can have various modifications and changes. 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. A protective member for a busbar, characterized in that: The protective element for the busbar comprises: The shell has a accommodating cavity and a first opening and a second opening respectively connected to the accommodating cavity, the bus is arranged in the accommodating cavity through the first opening, the second opening is arranged in alignment with the connecting end of the bus to expose at least a portion of the connecting end of the bus, and the connecting end is electrically connected to an external component through the second opening.

2. The protective member for busbar according to claim 1, characterized in that: The connecting end of the bus has a fixing hole, and the shell also includes a third opening. The third opening, the second opening and the fixing hole are arranged in alignment in the first direction, and the fixing member is sequentially connected to the third opening, the fixing hole and the second opening to electrically connect the bus to the external component.

3. The protection member for busbar according to claim 2, characterized in that: The housing further includes a third opening, the third opening is opposite to the connection end, and the protection member for the busbar further includes a cover body, the cover body is arranged to cover the third opening; Wherein, the cover body has an open state and a closed state.

4. The protection member for busbar according to claim 3, characterized in that: A connecting structure is provided between the cover body and the shell, one end of the connecting structure is connected to the shell, and the other end of the connecting structure is connected to the cover body, and the connecting structure can be bent to enable the cover body to switch between the open state and the closed state.

5. The protection member for busbar according to claim 3 or 4, characterized in that: The protective member for the bus also includes a snap-in member and a snap-in groove, wherein the snap-in member is arranged on one of the cover body and the shell, and the snap-in groove is arranged on the other of the cover body and the shell, and when the cover body is in the closed state, the snap-in member is snap-fitted with the snap-in groove to limit the displacement of the cover body.

6. The protection member for busbar according to claim 3, characterized in that: The protective member for the bus also includes a protrusion and a step structure, wherein the protrusion protrudes along the circumference of the cover body and is arranged around the inner wall of one of the cover body and the shell, and the protrusion extends along the first direction, and the step structure is arranged on the other of the cover body and the shell, and the step structure is arranged corresponding to the protrusion, and when the cover body is in the closed state, the protrusion is located in the step structure.

7. The protection member for a busbar according to claim 4, characterized in that: The connection structure includes a first section and a second section connected in sequence, wherein the first section is connected to the cover body, and the second section is connected to the shell, and the first section can be bent relative to the second section so that the cover body can be switched between the open state and the closed state.

8. The protective member for a busbar according to any one of claims 3-4 or 6-7, characterized in that: The second opening and the third opening include circular openings, and a diameter of the second opening is greater than or equal to a diameter of the third opening.

9. The protection member for a busbar according to claim 4, characterized in that: The shell, the connecting structure and the cover are an integrally formed structure.

10. A circuit breaker assembly, characterized in that: The circuit breaker assembly comprises: A protective member for a busbar as claimed in any one of claims 1 to 9; The circuit breaker has an external connection terminal, and the external connection terminal is electrically connected to the connection terminal of the busbar through a fixing member.

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