Busbar structure and circuit breaker
By incorporating heat dissipation components and mounting brackets into the busbar structure, the problem of rapid aging of the busbar under high-temperature conditions is solved, achieving effective heat dissipation and extended lifespan, and improving the performance and safety of the busbar and its surrounding components.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DELIXI ELECTRIC
- Filing Date
- 2025-05-30
- Publication Date
- 2026-05-08
AI Technical Summary
Busbars operating at excessively high temperatures during prolonged operation and in harsh environments can age too quickly, affecting their service life and safety.
Heat dissipation components are installed in the busbar structure to exchange heat with it, and are connected to the circuit breaker base through mounting brackets to increase the heat dissipation path and area, and to effectively dissipate heat and cool down using heat dissipation components.
It effectively reduces the temperature of the busbar, extends its service life, improves heat dissipation efficiency, and ensures the performance and safety of the busbar and its surrounding components.
Smart Images
Figure CN224217913U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of electrical equipment technology, and in particular to a busbar structure and a circuit breaker. Background Technology
[0002] Low-voltage circuit breakers are important electrical components in low-voltage power distribution systems. For example, drawer-type circuit breakers not only frequently connect and disconnect circuits under load, but also automatically trip in the event of short circuits, overloads, and undervoltage (or loss of voltage), thus protecting lines and electrical equipment. The busbar of a low-voltage circuit breaker is a crucial component connecting the circuit breaker to external conductive parts. During circuit breaker operation, the busbar needs to carry and interrupt large currents.
[0003] In related technologies, under conditions such as long-term operation and prolonged exposure to harsh environments, the operating temperature of the busbar is relatively high, which causes the busbar and its surrounding components to age too quickly, resulting in performance damage, reduced service life, safety hazards, and affecting the performance and lifespan of the circuit breaker. Utility Model Content
[0004] This application provides a busbar structure and circuit breaker to solve the problem of high operating temperature of the busbar under long-term operation and harsh environment. It achieves cooling of the busbar, with good temperature rise effect, and ensures the performance and service life of the busbar and its surrounding components.
[0005] In a first aspect, this application provides a busbar structure for a circuit breaker. The busbar structure includes: a busbar for mounting to a circuit breaker housing and for connecting to an external conductive element; a heat dissipation assembly connected to at least one side of the busbar and in heat exchange contact with the busbar for heat dissipation; and a mounting bracket, one side of which is connected to the busbar, and the other side of which is connected to the circuit breaker housing. At least a portion of the heat dissipation assembly is located on the side of the mounting bracket facing the external conductive element.
[0006] The busbar structure provided in this application, by providing a heat dissipation component on at least one side of the busbar and making the heat dissipation component in heat exchange contact with the busbar, allows the heat from the busbar to be transferred to the heat dissipation component for heat exchange. The heat dissipation component can dissipate heat and cool the busbar. In this way, the heat generated by the busbar during operation can be transferred to the heat dissipation component in a timely manner for heat exchange, improving the heat dissipation efficiency and performance of the busbar, reducing the operating temperature of the busbar, and achieving a better temperature rise effect. This, to a certain extent, avoids the phenomenon of the busbar and its surrounding components aging too quickly and damaging their performance due to high operating temperatures under conditions such as long-term operation or prolonged exposure to harsh environments. It ensures the working performance and service life of the busbar and its surrounding components, improves the safety of use, and thus ensures the performance of the circuit breaker with the busbar structure of this application, extending the service life of the circuit breaker.
[0007] Meanwhile, the busbar is mounted on the circuit breaker base via a mounting bracket, facilitating its assembly on the circuit breaker. Since at least some of the heat dissipation components are arranged on the side of the mounting bracket facing the external conductive parts (i.e., the mounting bracket is located on the side of the heat dissipation components facing away from the external conductive parts), the mounting bracket will not interfere with the assembly and heat dissipation of the heat dissipation components, thus not interfering with the heat dissipation of the busbar.
[0008] In one possible design, the heat dissipation assembly includes a heat sink base and multiple heat sink fins. The heat sink base has a horizontal section and a vertical section. The horizontal section is in heat exchange contact with the busbar, and the vertical section is located on the side of the horizontal section opposite to the busbar. Multiple heat sink fins are spaced apart on the side of the horizontal section facing the external conductive parts.
[0009] The above solution enables the heat dissipation component to include a heat sink with horizontal and vertical sections. The horizontal section makes heat exchange contact with the busbar, providing a larger heat exchange path and facilitating faster heat transfer from the busbar to the heat dissipation component. In other words, it allows the heat dissipation component to better absorb the operating heat from the busbar. The vertical section is located on the side of the horizontal section away from the busbar, and multiple heat sinks are spaced apart on the side of the horizontal section facing the external conductive components. With the overall structure remaining the same, the horizontal section and the multiple heat sinks increase the heat dissipation path of the heat dissipation component, allowing it to dissipate the heat absorbed from the busbar more quickly and improving its heat dissipation efficiency. This further prevents the busbar from overheating and suffering performance degradation, ensuring better busbar performance and service life, and enhancing safety in use.
[0010] In one possible design, multiple heat sinks are spaced apart along the length of the vertical segment, and / or multiple heat sinks are spaced apart along the width of the vertical segment.
[0011] The above scheme arranges multiple heat sinks at intervals along the length and / or width of the vertical section, offering a flexible and convenient layout. Each heat sink forms an independent heat dissipation path, extending the heat dissipation path of the vertical section. Simultaneously, the heat dissipation paths of each heat sink are connected through the vertical section, meaning each heat sink is interconnected and works in concert to synergistically dissipate heat from the busbar. This improves the overall heat dissipation performance of the heat dissipation component, resulting in higher heat dissipation efficiency and more effective cooling of the busbar, thus reducing its operating temperature.
[0012] In one possible design, the shape of the horizontal segment facing the busbar matches the shape of the corresponding area of the busbar.
[0013] The above scheme makes the shape of the horizontal section facing the busbar match the shape of the corresponding area of the busbar. This results in a better fit between the horizontal section and the busbar, allowing them to fit together more tightly, resulting in higher heat exchange efficiency. This also makes it easier for the heat dissipation components to dissipate the heat from the busbar in a timely manner, thus achieving higher heat dissipation efficiency.
[0014] In one possible design, there are two heat dissipation components, which are located on opposite sides of the busbar along the thickness direction.
[0015] With the above solution, heat dissipation components are installed on both sides of the busbar in the thickness direction. The two heat dissipation components sandwich the busbar in the middle, and both components can dissipate heat from the busbar. In other words, the heat on the busbar can be dissipated simultaneously through the two heat dissipation components, which improves the heat dissipation efficiency and effect of the busbar. This makes the difference between the working temperature of the busbar and the ambient temperature smaller, achieving a better temperature rise effect. It further avoids the phenomenon of the busbar aging too quickly and its performance being damaged due to high working temperature, thereby further ensuring the working performance and service life of the busbar and making it safer to use.
[0016] In one possible design, the busbar is provided with a first connection hole, and the heat dissipation assembly is provided with a second connection hole. The busbar and the heat dissipation assembly are connected by a first fastener passing through the first connection hole and the second connection hole.
[0017] By using the above method, a first connecting hole is opened on the busbar, and a second connecting hole matching the first connecting hole is opened on the heat dissipation component. The first fastener is then inserted into the first and second connecting holes, which allows the busbar and the heat dissipation component to be connected together. The structure is simple, easy to manufacture, and convenient and stable to assemble.
[0018] In one possible design, there are at least two first connecting holes, which are spaced apart on the busbar; there are at least two second connecting holes; there are at least two first fasteners; and the first connecting holes, second connecting holes, and first fasteners are connected in a one-to-one correspondence.
[0019] Through the above scheme, the busbar and the heat dissipation component are assembled together by multiple first fasteners, which improves the connection strength and structural stability between the busbar and the heat dissipation component, ensures the heat exchange efficiency and heat exchange effect between the busbar and the heat dissipation component, and facilitates the heat dissipation component to dissipate heat from the busbar.
[0020] In one possible design, the heat dissipation component and the mounting bracket are integrally molded.
[0021] The above solution integrates the heat dissipation component and the mounting bracket into a single, unified structure. This integrated structure allows the heat dissipation component to not only cool the busbar but also to mount it onto the circuit breaker. Compared to related technologies where the heat dissipation component and mounting bracket are separately connected to the busbar, this design improves space and material utilization, as well as assembly efficiency. Furthermore, with the same structural integrity, the heat dissipation component can be made larger, increasing the heat exchange contact area between it and the busbar. This results in better heat dissipation performance, further preventing performance degradation due to high busbar operating temperatures and thus ensuring the busbar's operational performance and service life.
[0022] In one possible design, the busbar is provided with a first connection hole, the heat dissipation component is provided with a second connection hole, and the mounting bracket is provided with a third connection hole. The busbar, the heat dissipation component, and the mounting bracket are connected together by a first fastener passing through the first connection hole, the second connection hole, and the third connection hole. The heat dissipation component has a clearance hole at the connection between the mounting bracket and the circuit breaker base.
[0023] The above solution involves creating a first connecting hole on the busbar, a second connecting hole on the heat dissipation assembly, and a third connecting hole on the mounting bracket. A second fastener is then inserted through these three connecting holes to connect the busbar, heat dissipation assembly, and mounting bracket together. This allows the mounting bracket and heat dissipation assembly to be installed simultaneously on the busbar. The connection between the mounting bracket and the busbar enables the heat dissipation assembly to be mounted on the busbar; conversely, the connection between the heat dissipation assembly and the busbar enables the mounting bracket to be mounted on the busbar. Compared to related technologies where the heat dissipation assembly and mounting bracket are connected to the busbar separately, this solution not only improves material utilization but also increases assembly efficiency. Furthermore, the heat dissipation assembly does not interfere with the connection between the mounting bracket and the circuit breaker, facilitating assembly.
[0024] In one possible design, the mounting bracket has a first mounting hole on one side for connecting to the circuit breaker base, and a second mounting hole is provided on the circuit breaker base. The mounting bracket is installed on the circuit breaker base by a second fastener passing through the first and second mounting holes.
[0025] With the above solution, the mounting bracket is connected to the circuit breaker via a second fastener, which is convenient and secure to assemble, and improves the structural stability of the busbar and heat dissipation components.
[0026] Secondly, this application provides a circuit breaker, including a circuit breaker base and a busbar structure as described above, the busbar structure being mounted on the circuit breaker base.
[0027] In one possible design, the circuit breaker housing has a mounting cavity with an opening for facing external conductive parts, and a busbar structure is disposed within the mounting cavity.
[0028] The circuit breaker base has multiple mounting cavities spaced apart, and there are multiple busbar structures, with one busbar structure corresponding to one mounting cavity.
[0029] The above solution involves setting an installation cavity on the circuit breaker base and placing the busbar structure inside the installation cavity. This installation cavity protects and accommodates the busbar structure, extending its service life to a certain extent and ensuring the overall service life of the circuit breaker.
[0030] By setting multiple mounting cavities on the circuit breaker base, each busbar structure is arranged in a corresponding mounting cavity, so that there are sufficient creepage clearances and electrical clearances between the busbar structures, ensuring safe use.
[0031] The beneficial effects of the circuit breakers provided in the second aspect and the various possible designs of the second aspect can be found in the first aspect and the various possible implementations of the first aspect, and will not be repeated here. Attached Figure Description
[0032] Figure 1 This is an isometric view of the busbar structure described in one embodiment of this application.
[0033] Figure 2 This is an exploded view of the busbar structure according to an embodiment of this application.
[0034] Figure 3 This is an isometric view of the heat dissipation assembly of the busbar structure according to an embodiment of this application.
[0035] Figure 4 This is an isometric view of the busbar structure according to another embodiment of this application.
[0036] Figure 5 for Figure 4 A sectional view of a local structure.
[0037] Figure 6 This is an exploded view of the heat dissipation components and mounting brackets of the busbar structure described in another embodiment of this application.
[0038] Figure 7 This is an isometric view of a partial structure of a circuit breaker according to an embodiment of this application.
[0039] Figure 8 for Figure 7 A magnified view of part A in the middle.
[0040] Figure 9 This is an isometric view of a portion of the circuit breaker's structure.
[0041] Explanation of reference numerals in the attached drawings: 10. Busbar structure; 1. Busbar; 11. First connecting end; 12. Second connecting end; 2. Heat dissipation assembly; 21. Heat dissipation base; 211. Horizontal section; 212. Vertical section; 22. Heat dissipation fin; 31. First connecting hole; 32. Second connecting hole; 33. First fastener; 4. Mounting bracket; 41. Third connecting hole; 5. First mounting hole; 6. Clearance hole; 7. Second fastener; 100. Circuit breaker base; 20. Bracket; 30. Base; 301. Mounting cavity; 40. Clamp. Detailed Implementation
[0042] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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, 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.
[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.
[0044] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0045] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists, A and B exist simultaneously, or B exists. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.
[0046] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the busbar structure and circuit breaker of this application. For example, in the description of this application, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.
[0047] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.
[0048] In the description of this application, unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple groups" means two or more (including two groups).
[0049] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, "connection" or "linkage" in mechanical structures can refer to a physical connection, such as a fixed connection, for example, a connection secured by screws, bolts, or other spacers; a physical connection can also be a detachable connection, such as a snap-fit or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. In circuit structures, "connection" or "linkage" can refer not only to a physical connection but also to an electrical connection or a signal connection. For example, it can be a direct connection, i.e., a physical connection, or an indirect connection through at least one intermediate component, as long as the circuit is connected; it can also refer to the internal connection of two components. Signal connection can refer not only to signal connection through a circuit but also to signal connection through a medium, such as radio waves. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0050] refer to Figures 1 to 6 As shown, this embodiment provides a busbar structure 10, which is used in a circuit breaker to realize the electrical connection between the circuit breaker and external conductive components.
[0051] For details, please refer to [link / reference]. Figure 1 , Figure 4 and Figure 5 As shown, the busbar structure 10 includes a busbar 1, a heat dissipation assembly 2, and a mounting bracket 4. The busbar 1 is used for mounting to a circuit breaker and for connecting to external conductive components. The heat dissipation assembly 2 is connected to at least one side of the busbar 1 and makes heat exchange contact with the busbar 1 to dissipate heat from the busbar 1. One side of the mounting bracket 4 is connected to the busbar 1, and the other side of the mounting bracket 4 is used for connecting to the circuit breaker base 100. That is, the busbar 1 is connected to the circuit breaker base 100 through the mounting bracket 4, and at least a portion of the heat dissipation assembly 2 is located on the side of the mounting bracket 4 facing the external conductive components.
[0052] The heat dissipation component 2 is in heat exchange contact with the busbar 1. Specifically, it can be understood that the heat dissipation component 2 is in contact with the busbar 1, and the heat from the busbar 1 can be transferred to the heat dissipation component 2 for heat exchange.
[0053] In practice, busbar 1 and heat dissipation component 2 can directly contact each other for heat exchange. For example, one side of busbar 1 can directly contact one side of heat dissipation component 2, and the two can be tightly fitted together for heat exchange.
[0054] Of course, in other implementations, the busbar 1 and the heat dissipation component 2 can also be indirectly contacted through thermally conductive components such as thermally conductive adhesive. For example, the thermally conductive adhesive can be placed between the busbar 1 and the heat dissipation component 2, with one side of the thermally conductive adhesive attached to the busbar 1 and the other side attached to the heat dissipation component 2. The heat from the busbar 1 can be transferred to the heat dissipation component 2 for heat exchange through the thermally conductive adhesive.
[0055] In practice, the heat dissipation component 2 can be made of metal. The heat dissipation component 2 made of metal has a large thermal conductivity and excellent thermal conductivity, making it suitable for scenarios with large transient thermal shocks. It can quickly absorb heat and has a good heat dissipation effect on the busbar 1.
[0056] For example, the heat dissipation component 2 may be made of copper, aluminum, or the like.
[0057] The heat dissipation component 2 is connected to one side of the busbar 1, and the heat dissipation component 2 is in heat exchange contact with the busbar 1. In this way, the heat generated by the busbar 1 during operation can be transferred to the heat dissipation component 2 for heat exchange. In other words, the heat dissipation component 2 can absorb the heat of the busbar 1 and dissipate heat to cool the busbar 1, thereby releasing the heat of the busbar 1 quickly and reducing the temperature of the busbar 1. This avoids the phenomenon of the busbar 1 aging too quickly, reducing its performance or being damaged due to excessive temperature. It also avoids the phenomenon of surrounding components aging too quickly, reducing their performance or being damaged due to excessive temperature of the busbar 1, thus ensuring the working performance and service life of the busbar 1 and its surrounding components.
[0058] Busbar 1 is mounted on circuit breaker base 100 via mounting bracket 4, which facilitates the assembly of busbar 1 on the circuit breaker and helps improve assembly efficiency.
[0059] Since at least a portion of the heat dissipation component 2 is arranged on the side of the mounting bracket 4 facing the external conductive element, i.e., the mounting bracket 4 is located on the side of at least a portion of the heat dissipation component 2 facing away from the external conductive element, the mounting bracket 4 will not interfere with the assembly and heat dissipation of the heat dissipation component 2, and thus will not interfere with the heat dissipation of the busbar 1.
[0060] The circuit breaker includes a circuit breaker body (not shown) and a circuit breaker base 100. The circuit breaker body and the circuit breaker base 100 are detachably connected. For example, the circuit breaker body can be plugged into the circuit breaker base 100 or pulled out of the circuit breaker base 100 for easy inspection and maintenance of the circuit breaker.
[0061] In practice, busbar 1 is mounted to circuit breaker base 100 via mounting bracket 4. (Reference) Figure 1 , Figure 5 and Figure 8 As shown, busbar 1 has two opposite ends, namely a first connection end 11 and a second connection end 12. The first connection end 11 of busbar 1 is used for electrical connection with the circuit breaker body, and the second connection end 12 of busbar 1 is used for electrical connection with external conductive parts.
[0062] The busbar structure 10 provided in this embodiment provides a heat dissipation component 2 on at least one side of the busbar 1, and the heat dissipation component 2 is in heat exchange contact with the busbar 1. That is, the heat of the busbar 1 can be transferred to the heat dissipation component 2 for heat exchange. The heat dissipation component 2 can dissipate heat and cool down the busbar 1. In this way, the heat generated by the busbar 1 during operation can be transferred to the heat dissipation component 2 in a timely manner for heat exchange, which improves the heat dissipation efficiency and performance of the busbar 1, reduces the operating temperature of the busbar 1, and achieves a better temperature rise effect. This, to a certain extent, avoids the phenomenon that the busbar 1 and its surrounding components will age too quickly and suffer performance damage due to the high operating temperature of the busbar 1 under conditions such as long-term operation or long-term exposure to harsh environments. It ensures the working performance and service life of the busbar 1 and its surrounding components, improves the safety of use, and thus ensures the performance of the circuit breaker with the busbar structure 10 of this embodiment and extends the service life of the circuit breaker.
[0063] In some implementations, the heat dissipation component 2 is, for example, a conductor. Since the heat dissipation component 2 is connected to at least one side of the busbar 1 and the heat dissipation component 2 is in heat exchange contact with the busbar 1, the cross-sectional area of the busbar 1 at the heat dissipation component 2 is increased.
[0064] According to the formula R = ρL / A for the resistance R of a conductor and its cross-sectional area A, and the relationship between current I, voltage U, and resistance R I = U / R, we know that: I = UA / ρL.
[0065] Where ρ is the resistivity of the conductor and L is the length of the conductor.
[0066] Therefore, with voltage, resistivity, and length remaining constant, the larger the cross-sectional area of a conductor, the smaller the resistance and the larger the current; conversely, the smaller the cross-sectional area, the larger the resistance and the smaller the current. In other words, when other conditions remain constant, the larger the cross-sectional area of a conductor, the larger the current; and vice versa.
[0067] In summary, when the heat dissipation component 2 is a conductor, under the same voltage, the cross-sectional area of the busbar 1 at the heat dissipation component 2 is increased, resulting in lower resistance, which makes it easier for current to pass through. Therefore, by setting the heat dissipation component 2 on at least one side of the busbar 1 and making the heat dissipation component 2 in heat exchange contact with the busbar 1, the heat dissipation component 2 can not only dissipate heat from the busbar 1, ensuring the performance and service life of the busbar 1, but also enhance the conductivity of the busbar 1, improving the stability and reliability of the connection between the busbar 1 and external conductive components.
[0068] In some embodiments, reference Figure 1 and Figure 2As shown, the heat dissipation assembly 2 includes a heat sink 21 and a plurality of heat sinks 22. The heat sink 21 has a horizontal section 211 and a vertical section 212. The horizontal section 211 is in heat exchange contact with the busbar 1, and the vertical section 212 is disposed on the side of the horizontal section 211 away from the busbar 1. The plurality of heat sinks 22 are spaced apart on the side of the horizontal section 211 facing the external conductive parts.
[0069] By making the horizontal section 211 of the heat dissipation component 2 in heat exchange contact with the busbar 1, the contact area is large and the heat exchange path is wide, which facilitates the rapid transfer of heat from the busbar 1 to the heat dissipation component 2. In other words, it facilitates the heat dissipation component 2 to better absorb the working heat of the busbar 1. The vertical section 212 is set on the side of the horizontal section 211 away from the busbar 1, and multiple heat sinks 22 are spaced apart on the side of the horizontal section 211 facing the external conductive parts. Under the same overall structure, the arrangement of the horizontal section 211 and multiple heat sinks 22 increases the heat dissipation path of the heat dissipation component 2, which facilitates the timely dissipation of heat absorbed from the busbar 1, improves the heat dissipation efficiency of the heat dissipation component 2, and further avoids the phenomenon of high working temperature of the busbar 1 and performance damage, further ensuring the working performance and service life of the busbar 1, and improving the safety of use.
[0070] In practice, the horizontal segment 211 and the vertical segment 212 can be integrally molded, resulting in good overall integrity and high structural strength. Alternatively, in other implementations, the horizontal segment 211 and the vertical segment 212 can be connected by welding.
[0071] In some embodiments, reference Figures 1 to 6 As shown, multiple heat sinks 22 can be arranged, for example, along the length of the vertical segment 212 (see reference). Figures 1 to 3 (X-direction) interval settings.
[0072] Multiple heat sinks 22 are spaced apart along the length of the vertical segment 212, and each heat sink 22 extends along the width of the vertical segment 212. This flexible and convenient layout allows each heat sink 22 to form an independent heat dissipation path, extending the heat dissipation path of the vertical segment 212. Simultaneously, the heat dissipation paths of each heat sink 22 are connected through the vertical segment 212, meaning each heat sink 22 is interconnected and works in concert to synergistically dissipate heat from the busbar 1. This improves the overall heat dissipation performance of the heat dissipation assembly 2, resulting in higher heat dissipation efficiency and more effective cooling of the busbar 1, thus reducing its operating temperature.
[0073] In some embodiments, reference Figures 1 to 3 As shown, multiple heat sinks 22 can be arranged, for example, along the width direction of the vertical segment 212 (see reference). Figures 1 to 3 The Y-axis interval setting.
[0074] Multiple heat sinks 22 are spaced apart along the width of the vertical segment 212. Each heat sink 22 can be arranged parallel to the horizontal segment 211, forming a gradient heat dissipation. The layout is flexible and convenient. Each heat sink 22 forms an independent heat dissipation path, extending the heat dissipation path of the vertical segment 212. At the same time, the heat dissipation paths of each heat sink 22 are connected through the vertical segment 212, meaning that each heat sink 22 is interconnected and cooperates with each other to provide coordinated heat dissipation for the busbar 1. This improves the overall heat dissipation performance of the heat dissipation component 2, resulting in higher heat dissipation efficiency and more effective heat dissipation for the busbar 1, thus reducing the operating temperature of the busbar 1.
[0075] In other embodiments, reference is made to... Figures 1 to 3 As shown, some heat sinks 22 are spaced apart along the length of the vertical segment 212, and some heat sinks 22 are spaced apart along the width of the vertical segment 212.
[0076] In some embodiments, reference Figure 2 and Figure 5 As shown, the shape of the horizontal section 211 facing the busbar 1 matches the shape of the area of the busbar 1 corresponding to the horizontal section 211. This arrangement ensures good fit between the horizontal section 211 and the busbar 1, allowing them to fit together more tightly, resulting in higher heat exchange efficiency. This also facilitates the heat dissipation component 2 in dissipating the heat from the busbar 1 in a timely manner, thus achieving higher heat dissipation efficiency.
[0077] In some embodiments, reference Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, there are two heat dissipation components 2, which are arranged along the thickness direction of the busbar 1 (reference). Figure 1 and Figure 2 The Y-direction of the busbar is located on both sides of the busbar 1.
[0078] By providing heat dissipation components 2 on both sides of the busbar 1 in the thickness direction, the two heat dissipation components 2 sandwich the busbar 1 in the middle. Both heat dissipation components 2 can dissipate heat from the busbar 1. In other words, the heat on the busbar 1 can be dissipated simultaneously through the two heat dissipation components 2, which improves the heat dissipation efficiency and effect of the busbar 1. This makes the difference between the working temperature of the busbar 1 and the ambient temperature smaller, achieving a better temperature rise effect. It further avoids the phenomenon of performance damage to the busbar 1 due to high working temperature, thereby further ensuring the working performance and service life of the busbar 1 and making it safer to use.
[0079] In some embodiments, reference Figure 2 and Figure 5As shown, the busbar 1 is provided with a first connection hole 31, and the heat dissipation component 2 is provided with a second connection hole 32. The busbar 1 and the heat dissipation component 2 are connected by a first fastener 33 passing through the first connection hole 31 and the second connection hole 32.
[0080] In other words, by opening a first connection hole 31 on the busbar 1 and opening a second connection hole 32 on the heat dissipation component 2 that matches the first connection hole 31, and by inserting the first fastener 33 through the first connection hole 31 and the second connection hole 32, the busbar 1 and the heat dissipation component 2 can be connected together. The structure is simple, easy to manufacture, and easy and stable to assemble.
[0081] In practice, the first fastener 33 can be, for example, a rivet or a bolt.
[0082] In some implementations, refer to Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, when heat dissipation components 2 are provided on both sides of the busbar 1 in the thickness direction, the first connection hole 31 on the busbar 1 can be, for example, a through hole. In this way, the two heat dissipation components 2 can be installed on the busbar 1 by a first fastener 33, which is convenient for assembly and helps to save costs.
[0083] The following embodiments are explained and illustrated using the example that the first connecting hole 31 is a through hole.
[0084] Of course, in other implementations, the first connection hole can also be a blind hole, and the two heat dissipation components 2 can be independently installed on the busbar 1 by different first fasteners, which allows for flexible assembly.
[0085] In some embodiments, reference Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, there are at least two first connecting holes 31, and at least two first connecting holes 31 are spaced apart on the busbar 1. There are at least two second connecting holes 32, and at least two first fasteners 33. The first connecting holes 31, the second connecting holes 32, and the first fasteners 33 are connected in a one-to-one correspondence.
[0086] Multiple first connection holes 31 are provided on the busbar 1, and multiple corresponding second connection holes 32 are provided on the heat dissipation component 2. The busbar 1 and the heat dissipation component 2 are assembled together by multiple first fasteners 33, which improves the connection strength and structural stability between the busbar 1 and the heat dissipation component 2, ensures the heat exchange efficiency and heat exchange effect between the busbar 1 and the heat dissipation component 2, and facilitates the heat dissipation component 2 to dissipate heat from the busbar 1.
[0087] For example, refer to Figure 2 , Figure 5 and Figure 6As shown, the busbar 1 is provided with two first connection holes 31, and the heat dissipation assembly 2 is provided with two second connection holes 32. The busbar 1 and the heat dissipation assembly 2 are assembled together by two first fasteners 33.
[0088] In other embodiments, the heat dissipation components can be bonded to the busbar, for example, using thermally conductive structural adhesive.
[0089] In some other embodiments, the heat dissipation components may be soldered onto the busbar, for example.
[0090] In some embodiments, reference Figures 1 to 3 As shown, the heat dissipation component 2 and the mounting bracket 4 are integrally formed.
[0091] By integrally molding the heat dissipation component 2 and the mounting bracket 4, they are integrated into a single structure. The heat dissipation component 2 not only dissipates heat from the busbar 1 but also allows the busbar 1 to be mounted on the circuit breaker. Compared with related technologies where the heat dissipation component 2 and the mounting bracket 4 are connected to the busbar 1 separately, this design not only improves space and material utilization but also increases assembly efficiency. Furthermore, with the same structure, the heat dissipation component 2 can be made larger, increasing the heat exchange contact area between it and the busbar 1. This results in better heat dissipation performance, further preventing performance degradation due to high operating temperatures of the busbar 1, and thus ensuring its performance and service life.
[0092] In some embodiments, reference Figures 4 to 6 As shown, the busbar 1 is provided with a first connection hole 31, the heat dissipation component 2 is provided with a second connection hole 32, and the mounting bracket 4 is provided with a third connection hole 41. The busbar 1, the heat dissipation component 2, and the mounting bracket 4 are connected together by a first fastener 33 passing through the first connection hole 31, the second connection hole 32, and the third connection hole 41. The heat dissipation component 2 has a clearance hole 6 at the connection between the mounting bracket 4 and the circuit breaker base 100.
[0093] In other words, by passing the second fastener 7 through the first connecting hole 31, the second connecting hole 32, and the third connecting hole 41, the busbar 1, the heat dissipation component 2, and the mounting bracket 4 can be connected together. This allows the mounting bracket 4 and the heat dissipation component 2 to be installed simultaneously on the busbar 1. The connection between the mounting bracket 4 and the busbar 1 allows the heat dissipation component 2 to be installed on the busbar 1; conversely, the connection between the heat dissipation component 2 and the busbar 1 allows the mounting bracket 4 to be installed on the busbar 1. Compared to related technologies where the heat dissipation component 2 and the mounting bracket 4 are connected to the busbar 1 separately, this method not only improves material utilization but also increases assembly efficiency. Furthermore, the heat dissipation component 2 does not interfere with the connection between the mounting bracket 4 and the circuit breaker, making assembly convenient.
[0094] It should be noted that heat sinks 22 can be installed on the heat dissipation assembly 2 in areas other than the second connection hole 32 and the clearance hole 6, and the arrangement of heat sinks 22 is quite flexible.
[0095] In some embodiments, reference Figures 1 to 6 , Figure 7 As shown, the mounting bracket 4 has a first mounting hole 5 on one side for connecting with the circuit breaker base 100, and a second mounting hole (not shown) is provided on the circuit breaker base 100. The mounting bracket 4 is mounted on the circuit breaker base 100 by a second fastener 7 passing through the first mounting hole 5 and the second mounting hole.
[0096] In other words, the mounting bracket 4 is connected to the circuit breaker base 100 by the second fastener 7, which is convenient and secure to assemble, and improves the structural stability of the busbar 1 and the heat dissipation component 2.
[0097] Understandably, the clearance hole 6 on the heat dissipation component 2 is used to avoid the second fastener 7, so that the heat dissipation component 2 will not interfere with the connection between the mounting bracket 4 and the circuit breaker base 100, which facilitates the assembly of the mounting bracket 4 and the circuit breaker base 100.
[0098] In practice, the second fastener 7 can be a bolt, which allows the mounting bracket 4 and the circuit breaker to be detachably connected, making assembly convenient and easy to replace.
[0099] In other implementations, the second fastener can be, for example, a rivet.
[0100] In other embodiments, the side of the mounting bracket used for connecting to the circuit breaker base 100 can also be connected to the circuit breaker by welding, for example, with high connection strength.
[0101] It should be noted that when the heat dissipation component 2 and the mounting bracket 4 are integrally formed, the heat dissipation component 2 has the aforementioned first mounting hole 5 at the position corresponding to the second mounting hole of the circuit breaker. The heat dissipation component 2 is mounted on the circuit breaker by the second fastener 7 passing through the first mounting hole 5 and the second mounting hole. Furthermore, heat sinks 22 can be installed on the heat dissipation component 2 in areas other than the second connection hole 32 and the first mounting hole 5, allowing for flexible arrangement of the heat sinks 22.
[0102] In some embodiments, reference Figures 1 to 6 As shown, there are at least two first mounting holes 5, and at least two first mounting holes 5 are spaced apart on the mounting bracket 4. There are at least two second mounting holes and at least two second fasteners 7. The first mounting holes 5, the second mounting holes, and the second fasteners 7 are connected in a one-to-one correspondence, which improves the connection strength and connection stability between the mounting bracket 4 and the circuit breaker, making the structure of the heat dissipation component 2 more stable and facilitating heat dissipation for the busbar 1.
[0103] For example, refer to Figure 2 and Figure 3 As shown, when the heat dissipation component 2 and the mounting bracket 4 are integrally formed, the heat dissipation component 2 has two first mounting holes 5 for connecting to the circuit breaker.
[0104] refer to Figure 6 As shown, when the heat dissipation assembly 2 is installed on the circuit breaker via the mounting bracket 4, the mounting bracket 4 has two first mounting holes 5 for connecting to the circuit breaker.
[0105] refer to Figures 7 to 9 As shown, this embodiment also provides a circuit breaker, which includes a circuit breaker base 100 and a busbar structure 10, with the busbar structure 10 mounted on the circuit breaker base 100.
[0106] The circuit breaker base 100 can be fixed in a distribution cabinet, for example. The circuit breaker base 100 is connected to external conductive components, such as electrical equipment or power supply, through its internal busbar structure 10 to protect and control the circuit.
[0107] In practice, the circuit breaker can be, for example, a drawer-type circuit breaker.
[0108] The drawer-type circuit breaker also includes a circuit breaker body (not shown), which is detachably connected to the circuit breaker base 100. For example, the circuit breaker body can be plugged into or pulled out of the circuit breaker base 100 for easy inspection and maintenance of the circuit breaker.
[0109] When the circuit breaker body is plugged into the circuit breaker base 100, the circuit breaker body is electrically connected to the busbar 1 inside the circuit breaker base 100, realizing the electrical connection between the circuit breaker body and the external conductive parts, and the circuit is connected. When the circuit breaker body is pulled out of the circuit breaker base 100, the circuit breaker body is separated from the busbar 1 inside the circuit breaker base 100, realizing the disconnection between the circuit breaker body and the external conductive parts, and the circuit is cut off. This method is easy to maintain, has high safety, and high reliability.
[0110] refer to Figure 7 As shown, in some embodiments, the circuit breaker base 100 includes a bracket 20 and a base 30, the bracket 20 and the base 30 being connected together, and the busbar structure 10 being connected to the base 30.
[0111] In practice, the bracket 20 is also connected to the installation location of the circuit breaker base 100, such as the distribution cabinet. In this way, the base 30 with the busbar structure 10 is installed in the distribution cabinet through the bracket 20, which makes assembly convenient.
[0112] refer to Figure 8As shown, busbar 1 has two opposite ends, namely a first connection end 11 and a second connection end 12. The first connection end 11 of busbar 1 is used for electrical connection with the circuit breaker body, and the second connection end 12 of busbar 1 is used for electrical connection with external conductive parts.
[0113] In a specific implementation, the circuit breaker base 100 also includes a clamp 40, which is electrically connected to the first connection terminal 11 of the busbar 1 inside the circuit breaker base 100. The clamp 40 is used to connect the circuit breaker body, making the assembly of the circuit breaker body and the circuit breaker base 100 more convenient. Specifically, when the circuit breaker body is inserted into the circuit breaker base 100, the circuit breaker body is connected to the clamp 40, thereby realizing the electrical connection between the circuit breaker body and the busbar 1. When the circuit breaker body is pulled out and removed from the circuit breaker base 100, the circuit breaker body separates from the clamp 40, realizing the separation of the circuit breaker body from the busbar 1.
[0114] In some embodiments, reference Figure 7 and Figure 9 As shown, the circuit breaker base 100 is provided with a mounting cavity 301, which has an opening for facing the external conductive parts, and the busbar structure 10 is disposed in the mounting cavity 301.
[0115] By setting an installation cavity 301 on the circuit breaker base 100, the busbar structure 10 is placed inside the installation cavity 301. In this way, the installation cavity 301 has a protective and storage function for the busbar structure 10, which extends the service life of the busbar structure 10 to a certain extent and ensures the overall service life of the circuit breaker.
[0116] In practice, the mounting cavity 301 is set on the base 30.
[0117] In some embodiments, reference Figure 9 As shown, the circuit breaker base 100 is provided with multiple mounting cavities 301 at intervals, and there are multiple busbar structures 10, with one busbar structure 10 installed in one mounting cavity 301.
[0118] By setting multiple mounting cavities 301 on the circuit breaker base 100, each busbar structure 10 is arranged in a corresponding mounting cavity 301, so that there are sufficient creepage clearance and electrical clearance between the busbar structures 10, ensuring safety in use.
[0119] The busbar structure in this embodiment has the same structure and implementation principle as the busbar structure provided in the above embodiments, and can bring the same or similar technical effects. It will not be described in detail here. For details, please refer to the description of the above embodiments.
Claims
1. A busbar structure for a circuit breaker, characterized in that, The busbar structure includes: Busbar, used for mounting to the circuit breaker base of the circuit breaker and for connecting to external conductive components; A heat dissipation assembly is connected to at least one side of the busbar and makes heat exchange contact with the busbar to dissipate heat from the busbar; and The mounting bracket has one side connected to the busbar and the other side connected to the circuit breaker base. At least a portion of the heat dissipation assembly is located on the side of the mounting bracket facing the external conductive element.
2. The busbar structure according to claim 1, characterized in that, The heat dissipation assembly includes a heat sink and multiple heat sinks; The heat sink has a horizontal section and a vertical section. The horizontal section is in heat exchange contact with the busbar, and the vertical section is located on the side of the horizontal section away from the busbar. A plurality of heat sinks are spaced apart on the side of the horizontal section facing the external conductive element.
3. The busbar structure according to claim 2, characterized in that, The plurality of heat sinks are spaced apart along the length of the vertical segment; And / or, a plurality of said heat sinks are spaced apart along the width direction of said vertical segment; And / or, the shape of the horizontal segment facing the busbar side matches the shape of the area of the busbar corresponding to the horizontal segment.
4. The busbar structure according to claim 1, characterized in that, There are two heat dissipation components, which are respectively arranged on both sides of the busbar along the thickness direction of the busbar.
5. The busbar structure according to claim 1, characterized in that, The busbar is provided with a first connection hole, and the heat dissipation component is provided with a second connection hole. The busbar and the heat dissipation component are connected by a first fastener passing through the first connection hole and the second connection hole.
6. The busbar structure according to claim 5, characterized in that, There are at least two first connecting holes, which are spaced apart on the busbar. There are at least two second connecting holes and at least two first fasteners. The first connecting holes, the second connecting holes, and the first fasteners are connected in a one-to-one correspondence.
7. The busbar structure according to claim 1, characterized in that, The heat dissipation component is integrally formed with the mounting bracket; Alternatively, the busbar is provided with a first connection hole, the heat dissipation component is provided with a second connection hole, and the mounting bracket is provided with a third connection hole. The busbar, the heat dissipation component, and the mounting bracket are connected together by a first fastener passing through the first connection hole, the second connection hole, and the third connection hole, and the heat dissipation component has a clearance hole at the connection between the mounting bracket and the circuit breaker base.
8. The busbar structure according to claim 1, characterized in that, The mounting bracket has a first mounting hole on one side for connecting to the circuit breaker base, and the circuit breaker base has a second mounting hole. The mounting bracket is installed on the circuit breaker base by a second fastener passing through the first mounting hole and the second mounting hole.
9. A circuit breaker, characterized in that, Includes a circuit breaker base and a busbar structure as described in any one of claims 1 to 8; The busbar structure is installed on the circuit breaker base.
10. The circuit breaker according to claim 9, characterized in that, The circuit breaker base is provided with a mounting cavity, the mounting cavity having an opening for facing external conductive parts, and the busbar structure is disposed within the mounting cavity; The circuit breaker base is provided with multiple mounting cavities at intervals, and there are multiple busbar structures, with one busbar structure installed in one mounting cavity.