Circuit breaker
By optimizing the circuit breaker design through parallel connection and heat dissipation structure, the problem of temperature rise of the circuit breaker under high current is solved, achieving higher current carrying capacity and stability, and extending service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2026-03-24
AI Technical Summary
As the power of electrical equipment increases, the heat generated by circuit breakers when carrying large currents for extended periods leads to temperature rise, posing a safety hazard.
By adopting a parallel connection method, adjacent paths are connected through a connecting busbar, which reduces the total resistance and shunts the current, reducing the heat generated by the current. Combined with an integrated connector and heat dissipation structure, the heat exchange area and air circulation channels are increased, thereby improving heat dissipation efficiency.
It effectively reduces circuit breaker temperature rise, minimizes safety hazards, enhances current carrying capacity, extends service life, and expands the scope of application.
Smart Images
Figure CN224036313U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of switch technology, specifically to a circuit breaker. Background Technology
[0002] A circuit breaker is a switching device used to protect circuits. It can automatically cut off the current when the circuit is overloaded, short-circuited or other faults occur, preventing damage to electrical equipment or dangerous situations such as fires.
[0003] As the power of electrical equipment increases, the current carried by the equipment also increases, and correspondingly, the capacity requirements for circuit breakers also become higher.
[0004] Circuit breakers need to carry large operating currents for extended periods. The impedance of the circuit breaker itself generates heat, causing the internal temperature of the circuit breaker to rise, which may lead to failure and poses a safety risk. Utility Model Content
[0005] This application provides a circuit breaker for reducing the temperature rise of the circuit breaker and mitigating the possibility of safety hazards caused by excessive temperature.
[0006] To achieve the above objectives, this application provides a circuit breaker including a connection bar group and a plurality of parallel passages, each passage including an incoming terminal and an outgoing terminal. The connection bar group includes two first connection bars, wherein one first connection bar is electrically connected to the incoming terminals of two adjacent passages, and the other first connection bar is electrically connected to the outgoing terminals of the two adjacent passages, for connecting the two passages in parallel.
[0007] When the above technical solution is adopted, the first connecting block is used to electrically connect to the incoming or outgoing terminals of two adjacent passages. That is, one first connecting block is electrically connected to two adjacent incoming terminals at the same time, or one first connecting block is electrically connected to two adjacent outgoing terminals at the same time.
[0008] When two adjacent passages have two incoming terminals that are simultaneously connected to a first connection outlet, then the two adjacent passages have two outgoing terminals that are simultaneously connected to another first connection outlet.
[0009] In this way, the two adjacent paths are connected in parallel through a connecting group. The total resistance of the two paths after parallel connection is reduced, which can improve the current carrying capacity. Moreover, the two paths after parallel connection can shunt the current, reducing the current flowing through the paths. During operation, less heat is generated, which helps to reduce the temperature rise of the circuit breaker and reduce the possibility of safety hazards caused by excessive temperature.
[0010] In one possible implementation, the first connection bar includes two connectors that are electrically connected. The connectors are used to electrically connect to either an incoming terminal or an outgoing terminal of two adjacent pathways.
[0011] When the above technical solution is adopted, a first connection bar includes two connectors, which can increase the conductive area. On the one hand, this can reduce the resistance of the first connection bar and reduce energy loss. On the other hand, it increases the heat exchange area, which is beneficial for controlling the temperature rise of the circuit breaker.
[0012] In one possible implementation, a gap exists between the two connectors included in a first connecting row.
[0013] The above technical solution not only creates an airflow channel between the two connectors, facilitating air circulation and accelerating heat dissipation, thus reducing the possibility of excessive circuit breaker temperature rise due to heat accumulation, but also increases the contact area between the first connector and the wiring lugs of external equipment, reducing contact resistance and improving contact stability and reliability.
[0014] In one possible implementation, the connector includes a mounting plate, an extension plate, and a connecting plate connected in sequence. The mounting plate is used for electrical connection to an incoming or outgoing terminal, and the connecting plate is used for electrical connection to an external device. The extension plate is inclined towards the other connector from the mounting plate to the connecting plate.
[0015] When the above technical solution is adopted, the gap between the two connectors included in a first connecting strip can be ensured, so that the two connecting plates can simultaneously contact a wiring lug of an external device.
[0016] In one possible implementation, the connector is a one-piece structure.
[0017] By adopting the above technical solution, stress concentration problems caused by bolts or welding can be avoided, ensuring higher dimensional accuracy and consistency, and improving the structural strength of the connectors. Furthermore, no machining is required for the connectors, reducing material usage and preventing waste. Moreover, the integrated structure reduces connection points, lowering the risk of failure due to loose connections, corrosion, or fatigue, and improving fatigue resistance. Additionally, it reduces the number of parts and assembly steps, simplifying the operation process.
[0018] In one possible implementation, the surface of the connecting plate is perpendicular to the arrangement direction of the multiple pathways.
[0019] When the above technical solution is adopted, in practical application, the air flow channel formed between two adjacent connecting plates is consistent with the airflow direction inside the circuit breaker, which reduces airflow resistance, improves airflow efficiency, and allows the airflow to pass smoothly through the channel between the two connecting plates, which can more effectively remove heat, help dissipate heat inside the circuit breaker, reduce the circuit breaker temperature, and improve the operational stability of the circuit breaker.
[0020] In one possible implementation, the circuit breaker further includes a second connection bar for electrical connection with the incoming or outgoing terminals of the remaining paths, which are paths other than those connected in parallel.
[0021] In one possible implementation, the circuit breaker also includes a heat dissipation structure disposed on the connector or the second connector.
[0022] When the above technical solution is adopted, the heat dissipation structure improves heat dissipation efficiency, effectively reduces the circuit breaker temperature, avoids overheating, and further enhances the circuit breaker's breaking capacity, effectively interrupting fault current and improving the overall safety of the device. Simultaneously, it can delay material aging and extend the circuit breaker's service life. Furthermore, it allows the circuit breaker to operate stably under high temperatures or high loads, reducing faults caused by overheating and expanding the circuit breaker's application range.
[0023] In one possible implementation, the first connecting bar has a bearing surface parallel to the arrangement direction of the multiple pathways; the circuit breaker also includes a heat dissipation structure disposed on the bearing surface.
[0024] When the above technical solution is adopted, the heat dissipation structure improves heat dissipation efficiency, effectively reduces the circuit breaker temperature, avoids overheating, and further enhances the circuit breaker's breaking capacity, effectively interrupting fault current and improving the overall safety of the device. Simultaneously, it can delay material aging and extend the circuit breaker's service life. Furthermore, it allows the circuit breaker to operate stably under high temperatures or high loads, reducing faults caused by overheating and expanding the circuit breaker's application range.
[0025] The heat dissipation structure is positioned on the load-bearing surface, which allows the first connecting bar to better support the structure and withstand mechanical and electrical loads, thus enhancing overall strength. Furthermore, the heat dissipation structure is directly integrated into the load-bearing surface, requiring no additional space and achieving a compact design suitable for space-constrained applications.
[0026] In one possible implementation, the circuit breaker further includes a second connection bar for electrical connection with the incoming or outgoing terminals of the remaining paths, which are paths other than those connected in parallel. Attached Figure Description
[0027] Figure 1 Schematic diagram of the circuit breaker provided in the embodiments of this application Figure 1 .
[0028] Figure 2 Schematic diagram of the circuit breaker provided in the embodiments of this application Figure 2 .
[0029] Figure 3 This is a schematic diagram of a first connecting row in an example provided by an embodiment of this application.
[0030] Figure 4 This is a schematic diagram showing the positional connection between the first connecting bar and the heat dissipation structure in another example provided in this application embodiment.
[0031] Explanation of reference numerals in the attached figures:
[0032] 11-First path, 12-Second path, 13-Third path, 14-Fourth path, 2-First connecting row,
[0033] 21-Connector, 211-Mounting plate, 212-Extension plate, 213-Connecting plate, 3-Second connecting row, 4-Heat dissipation structure.
[0034] 5-Fastening screws. Detailed Implementation
[0035] 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.
[0036] 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.
[0037] 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.
[0038] 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 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.
[0039] 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.
[0040] 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).
[0041] As the power of electrical equipment increases, the current carried by the equipment also increases, and correspondingly, the capacity requirements for circuit breakers also become higher.
[0042] Circuit breakers need to carry large operating currents for a long time, and the circuit breaker's own impedance will generate heat, especially the circuit located in the middle. Due to heat dissipation and other factors, the temperature rise will be higher than that of the circuits on both sides.
[0043] In view of the problems existing in the above-mentioned prior art, please refer to Figure 1 and Figure 2 As shown in the figure, this application provides a circuit breaker, including a connection group and multiple parallel passages, the passages including incoming line terminals and outgoing line terminals.
[0044] The number of pathways is not specifically limited here. For example, the number of pathways can be two, three, four, five, or six.
[0045] like Figure 1 and Figure 2As shown, there are four pathways. The four pathways are arranged side by side in a certain direction.
[0046] In the embodiments provided in this application, the circuit may include a stationary contact and a moving contact. When the moving contact is in contact with the stationary contact, the current in the circuit where the circuit breaker is located is connected, the circuit breaker is in the closed state, and it operates normally. When the moving contact is disconnected from the stationary contact, the current in the circuit where the circuit breaker is located is disconnected, and the circuit breaker is in the open state.
[0047] The moving contact and the stationary contact can be used as either an incoming or outgoing terminal, respectively. In practice, when the moving contact is the incoming terminal, the stationary contact is the outgoing terminal, and vice versa. No specific limitations are imposed here; the actual situation shall prevail.
[0048] Of course, in practice, the circuit breaker provided in this application embodiment also includes a housing (not shown in the figure), and multiple circuits can be arranged inside the housing.
[0049] The housing can accommodate and contain passageways, providing them with a stable space to ensure their normal operation without external interference. Simultaneously, the housing provides positioning and support for the passageways, preventing displacement or damage to components installed within it during operation. The housing can also withstand a certain amount of external pressure, protecting the passageways from damage. Furthermore, the housing offers protection, preventing moisture, dust, dirt, and other impurities from entering the housing, thus avoiding corrosion or damage to the passageways installed inside.
[0050] The connection group includes two first connection groups 2, wherein one first connection group 2 is electrically connected to the incoming terminal of two adjacent passages, and the other first connection group 2 is electrically connected to the outgoing terminal of the two adjacent passages, for the purpose of connecting the two passages in parallel.
[0051] The first connecting strip 2 is used for electrical connection to the incoming or outgoing terminals of two adjacent passages. That is, one first connecting strip 2 can be electrically connected to two adjacent incoming terminals at the same time, or one first connecting strip 2 can be electrically connected to two adjacent outgoing terminals at the same time.
[0052] When two adjacent passages have two incoming terminals that are simultaneously electrically connected to a first connection bar 2, then the two adjacent passages have two outgoing terminals that are simultaneously electrically connected to another first connection bar 2.
[0053] In this way, the two adjacent paths are connected in parallel through the two first connecting blocks 2 included in a connecting block group. The total resistance of the two paths after parallel connection is reduced, which can improve the current carrying capacity. Moreover, the two paths after parallel connection can shunt the current, which reduces the current flowing through the path and reduces the heat generated during operation, which helps to reduce the temperature rise of the circuit breaker and reduce the possibility of safety hazards caused by excessive temperature of the circuit breaker.
[0054] It should be noted that in existing technology, the circuit breaker's path is generally electrically connected to external equipment via a second connection bar. The second connection bar is used for electrical connection to the incoming or outgoing terminals of the path. One second connection bar corresponds to one incoming terminal or one outgoing terminal.
[0055] In the embodiments provided in this application, the circuit breaker further includes a second connection bar 3, which is used for electrical connection of the incoming or outgoing terminals of the other paths, and the other paths are paths other than those connected in parallel.
[0056] In practice, there can be one, two, three, or more connection groups. One connection group corresponds to two paths.
[0057] The number of the first connecting rows 2 can be two, four, six, etc., depending on the number of pathways and the actual connection situation.
[0058] In this application, when there are two passages, there is one connection group, and correspondingly, there are two first connection groups 2. One first connection group 2 can be electrically connected to the two incoming terminals of the two passages, and the other first connection group 2 can be electrically connected to the two outgoing terminals of the two passages, thereby enabling the two passages to be connected in parallel.
[0059] When there are three pathways, there is one connection group: two first connection groups 2 and two second connection groups 3. One first connection group 2 can be electrically connected to the two incoming terminals of two adjacent pathways, and the other first connection group 2 can be electrically connected to the two outgoing terminals of the same two adjacent pathways, thus connecting the two adjacent pathways in parallel. When two adjacent pathways are connected in parallel using two first connection groups 2, one second connection group 3 can be electrically connected to the incoming terminal of the third pathway, and the other second connection group 3 can be electrically connected to the outgoing terminal of the third pathway.
[0060] When the number of pathways is four, such as Figure 1 and Figure 2As shown, for ease of description, the four channels are defined as the first channel 11, the second channel 12, the third channel 13, and the fourth channel 14, respectively. The first channel 11, the second channel 12, the third channel 13, and the fourth channel 14 are arranged side by side in sequence.
[0061] In one example, the number of connecting rows can be two, meaning the first connecting row has four rows.
[0062] For ease of description, the four first connecting rows are now defined as connecting row 1, connecting row 2, connecting row 3, and connecting row 4, respectively.
[0063] At this point, connector 1 can be electrically connected to the two incoming terminals of the first and second channels 11 and 12, respectively. Connector 2 can be electrically connected to the two outgoing terminals of the first and second channels 11 and 12, respectively. Connector 3 can be electrically connected to the two incoming terminals of the third and fourth channels 13 and 14, respectively. Connector 4 can be electrically connected to the two outgoing terminals of the third and fourth channels 13 and 14, respectively. This results in the first and second channels 11 and 12 being connected in parallel, and the third and fourth channels 13 and 14 being connected in parallel.
[0064] In another example, the number of connecting rows can be one, that is, the number of first connecting rows is two and the number of second connecting rows can be four.
[0065] The two first connecting bars can be electrically connected to the two incoming terminals and two outgoing terminals of the first passage 11 and the second passage 12, respectively, so that the first passage 11 and the second passage 12 are connected in parallel. The four second connecting bars can be electrically connected to the two incoming terminals and two outgoing terminals of the third passage 13 and the fourth passage 14, respectively.
[0066] Of course, such as Figure 1 and Figure 2 As shown, the two first connecting blocks 2 can be electrically connected to the two incoming terminals and two outgoing terminals of the second passage 12 and the third passage 13, respectively, so that the second passage 12 and the third passage 13 are connected in parallel. The four second connecting blocks 3 can be electrically connected to the two incoming terminals and two outgoing terminals of the first passage 11 and the fourth passage 14, respectively.
[0067] In addition, the two first connecting blocks 2 can also be electrically connected to the two incoming terminals and two outgoing terminals of the third passage 13 and the fourth passage 14, respectively, so that the third passage 13 and the fourth passage 14 are connected in parallel. The four second connecting blocks 3 can be electrically connected to the two incoming terminals and two outgoing terminals of the first passage 11 and the second passage 12, respectively.
[0068] When there are five circuits, there are two connecting groups, that is, four connecting groups 2 and two connecting groups 3. In this case, the circuit breaker is a three-pole circuit breaker.
[0069] When there are six circuits, there are three connecting groups, that is, the number of the first connecting group 2 is six. At this time, the circuit breaker is a three-pole circuit breaker.
[0070] When the number of pathways is five or six, the specific connection situation of the first connection row 2 is not specifically limited here, and the actual situation shall prevail.
[0071] The first connecting bar 2 and the second connecting bar 3 are made of conductive metal. For example, the first connecting bar 2 and the second connecting bar 3 can both be copper.
[0072] In practice, the materials of the first connecting row 2 and the second connecting row 3 can be the same or different. No specific limitation is made here. The actual situation shall prevail.
[0073] In one possible implementation, such as Figure 1 As shown, the first connection bar 2 includes two connectors 21, which are electrically connected. The connectors 21 are used to electrically connect to an incoming terminal or an outgoing terminal of two adjacent passages.
[0074] In practice, one end of the first connector 2 is electrically connected to the circuit, and the other end of the first connector 2 can be electrically connected to the wiring lug of an external device.
[0075] The two connectors 21 can be arranged symmetrically, such as... Figure 2 and Figure 3 As shown. The two connectors 21 can contact each other, thus electrically connecting the two connectors 21. Alternatively, the two connectors 21 are electrically connected when they are electrically connected to the same lug. Furthermore, the two connectors 21 can also be electrically connected using a wire.
[0076] Because a first connection bar 2 is simultaneously electrically connected to two adjacent incoming terminals, or a first connection bar 2 is simultaneously electrically connected to two adjacent outgoing terminals.
[0077] In a first connection bar 2, one of the two connectors 21 is used for electrical connection to one of two adjacent incoming terminals, and the other connector 21 is used for electrical connection to the other incoming terminal. Alternatively, one connector 21 is used for electrical connection to one of two adjacent outgoing terminals, and the other connector 21 is used for electrical connection to the other outgoing terminal.
[0078] That is, in the two connectors 21 included in a first connection row 2, one connector 21 can be electrically connected to an incoming terminal, and the other connector 21 can be electrically connected to an incoming terminal adjacent to the one incoming terminal.
[0079] Alternatively, in one of the two connectors 21 included in a first connection row 2, one connector 21 may be electrically connected to an outgoing terminal, and the other connector 21 may be electrically connected to an outgoing terminal adjacent to that outgoing terminal.
[0080] When the above technical solution is adopted, a first connection bar 2 includes two connectors 21, which can increase the conductive area. On the one hand, this can reduce the resistance of the first connection bar 2 and reduce energy loss. On the other hand, it increases the heat exchange area, which is beneficial to controlling the temperature rise of the circuit breaker.
[0081] As one possible approach, please refer to Figure 1 and Figure 3 As shown, there is a gap between the two connectors 21 included in a first connecting row 2.
[0082] In practical implementation, the wiring lugs of the external device can be located within the gap between the two connections. This not only creates an airflow channel between the two connectors 21, facilitating air circulation and accelerating heat dissipation, thus reducing the possibility of excessive circuit breaker temperature rise due to heat accumulation, but also increases the contact area between the first connection bar 2 and the wiring lugs of the external device, reducing contact resistance and improving contact stability and reliability.
[0083] In some embodiments, such as Figure 3 As shown, the connector 21 includes a mounting plate 211, an extension plate 212, and a connecting plate 213 connected in sequence. The mounting plate 211 is used for electrical connection to the incoming or outgoing wiring terminal, and the connecting plate 213 is used for electrical connection to external equipment. Specifically, the connecting plate 213 can be electrically connected to the wiring lug of an external device.
[0084] The extension plate 212 is inclined towards the other connector 21 in the direction from the mounting plate 211 to the connecting plate 213, thereby ensuring the gap between the two connectors 21 included in a first connecting row 2 and ensuring that the two connecting plates 213 can simultaneously contact a wiring lug of an external device.
[0085] In specific implementation, such as Figure 1 and Figure 3 As shown, the surface of the mounting plate 211 can be perpendicular to the surface of the connecting plate 213, but in practice it is not limited to this.
[0086] In practice, the mounting plate 211, extension plate 212 and connecting plate 213 can be connected by welding, snap-fitting or other methods. Of course, this is just an example and is not intended as a specific limitation.
[0087] In the embodiments provided in this application, the connector 21 is an integral structure. Specifically, the connector 21 can be formed by bending a plate-like structure in one step.
[0088] This not only avoids stress concentration issues caused by bolts or welding connections, ensuring higher dimensional accuracy and consistency, and improving the structural strength of connector 21, but also eliminates the need for machining connector 21, reducing material usage and preventing waste. Furthermore, the integrated structure reduces connection points, lowering the risk of failure due to loose connections, corrosion, or fatigue, and improving fatigue resistance. Additionally, it reduces the number of parts and assembly steps for connector 21, simplifying the operation process.
[0089] As a feasible approach, combining Figure 1 and Figure 3 The surface of the connecting plate 213 is perpendicular to the arrangement direction of the multiple channels.
[0090] Thus, in practical applications, the airflow channel formed between two adjacent connecting plates 213 is consistent with the airflow direction inside the circuit breaker, reducing airflow resistance and improving airflow efficiency. The airflow can pass smoothly through the channel between the two connecting plates 213, which can more effectively remove heat, help dissipate heat inside the circuit breaker, reduce the circuit breaker temperature, and improve the operational stability of the circuit breaker.
[0091] In some embodiments, the structure of the connector 21 is the same as that of the second connection bar 3 of the circuit breaker.
[0092] The connector 21 has the same structure as the second connecting strip 3, reducing the number of parts, lowering design and manufacturing complexity, facilitating mass production, and reducing costs. Furthermore, the connector 21 and the second connecting strip 3 are interchangeable, reducing inventory types and management costs. Additionally, it makes maintenance and replacement more convenient, reducing maintenance costs and time.
[0093] Furthermore, in the case where the first connecting bar 2 provided in the embodiments of this application includes two connecting members 21, the circuit breaker provided in the embodiments of this application may also include a heat dissipation structure, which is disposed on the connecting member 21 or the second connecting bar 3.
[0094] The heat dissipation structure improves heat dissipation efficiency, effectively reducing the circuit breaker's temperature and preventing overheating. This further enhances the circuit breaker's breaking capacity, enabling it to effectively interrupt fault currents and improve overall operational safety. Simultaneously, it slows down material aging, extending the circuit breaker's lifespan. Furthermore, it allows the circuit breaker to operate stably under high temperatures or high loads, reducing faults caused by overheating and expanding its application range.
[0095] The number of heat dissipation structures can be one, two, three, or more. The heat dissipation structures can be mounted on connector 21 or the second connecting row 3. However, in practice, the number of heat dissipation structures 4 will be less than the total number of connectors 21 and the second connecting row 3.
[0096] As one possible implementation, such as Figure 2 As shown, the first connecting bar 2 has a bearing surface parallel to the arrangement direction of the multiple passages. The circuit breaker provided in this embodiment further includes a heat dissipation structure 4, which is disposed on the bearing surface.
[0097] The heat dissipation structure 4 improves heat dissipation efficiency, effectively reduces the circuit breaker temperature, prevents overheating, and further enhances the circuit breaker's breaking capacity, effectively interrupting fault current and improving overall safety. Simultaneously, it slows down material aging, extending the circuit breaker's service life. Furthermore, it allows the circuit breaker to operate stably under high temperatures or high loads, reducing faults caused by overheating and expanding its application range.
[0098] The heat dissipation structure 4 is mounted on the support surface. This support surface allows the first connecting bar 2 to better support the heat dissipation structure 4, while also bearing mechanical and electrical loads, thus improving overall strength. Furthermore, the heat dissipation structure 4 is directly integrated into the support surface, requiring no additional space and achieving a compact design suitable for space-constrained applications.
[0099] In practice, the heat dissipation structure 4 can be installed on the first connecting row 2 by welding or riveting.
[0100] In the embodiments provided in this application, such as Figure 4 As shown, the heat dissipation structure 4 can be installed on the first connection by fastening screws 5.
[0101] Specifically, a through hole can be made on the first connecting row 2, and a threaded hole can be made on the heat dissipation structure 4. The fastening screw 5 can pass through the through hole from the side of the first connecting row 2 away from the heat dissipation structure 4 and be tightened in the threaded hole.
[0102] like Figure 2As shown, the number of heat dissipation structures 4 can be one, two, three, or more. The heat dissipation structure 4 can be installed on the first connecting bar 2 or the second connecting bar 3. Of course, in practice, the number of heat dissipation structures 4 is less than the total number of the first connecting bar 2 and the second connecting bar 3.
[0103] Please continue to refer to this. Figure 2 The second connecting row 3 is used to support the heat dissipation structure 4. The supporting surface can be parallel to the bearing surface, but in practice it is not limited to this.
[0104] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, "connection" or "joining" in mechanical structures can refer to a physical connection, such as a fixed connection, for example, a connection fixed by a partition, such as a connection fixed by screws, bolts, or other partitions; 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 according to the specific circumstances.
Claims
1. A circuit breaker, characterized in that, include: Multiple parallel pathways, each pathway including an inlet terminal block and an outlet terminal block; A connection group includes two first connection groups; wherein one first connection group is electrically connected to the incoming terminal of two adjacent passages, and the other first connection group is electrically connected to the outgoing terminal of the two adjacent passages, for connecting the two passages in parallel.
2. The circuit breaker according to claim 1, characterized in that, The first connection bar includes two connectors, which are electrically connected; the connectors are used to electrically connect to an inlet terminal or an outlet terminal of two adjacent passages.
3. The circuit breaker according to claim 2, characterized in that, A gap exists between the two connectors included in one of the first connecting rows.
4. The circuit breaker according to claim 2, characterized in that, The connector includes a mounting plate, an extension plate, and a connecting plate connected in sequence. The mounting plate is used for electrical connection with the incoming terminal or the outgoing terminal, and the connecting plate is used for electrical connection with external equipment. The extension plate is inclined from the mounting plate to the connecting plate toward the other connector.
5. The circuit breaker according to claim 4, characterized in that, The connector is an integral structure.
6. The circuit breaker according to claim 4, characterized in that, The surface of the connecting plate is perpendicular to the arrangement direction of the plurality of channels.
7. The circuit breaker according to claim 2, characterized in that, The circuit breaker also includes a second connection bar, which is used to electrically connect to the incoming or outgoing terminals of the other paths, the other paths being paths other than those connected in parallel.
8. The circuit breaker according to claim 7, characterized in that, The circuit breaker also includes a heat dissipation structure, which is disposed on the connector or the second connector.
9. The circuit breaker according to claim 1, characterized in that, The first connecting bar has a bearing surface parallel to the arrangement direction of the plurality of passages; the circuit breaker further includes a heat dissipation structure disposed on the bearing surface.
10. The circuit breaker according to claim 9, characterized in that, The circuit breaker further includes a second connection bar, which is used to electrically connect to the line terminals or outgoing terminals of the remaining paths, the remaining paths being paths other than those connected in parallel.