Main circuit breaker
By combining contactors and circuit breakers with the design of linkage handles and status feedback contacts, the problem of large space occupation of DC110V bus protection devices is solved, achieving compact circuit protection and control, and meeting the needs of high current power supply.
Patent Information
- Application Number
- CN202423163622.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Existing DC110V bus protection devices have problems such as large space occupation and a large number of components, especially the combination design of contactors and circuit breakers in high current power supply control is not compact enough.
By combining contactors and circuit breakers and equipping them with corresponding control components, including contactors for opening and closing functions, linkage handles, and status feedback contacts, the linkage control of the circuit breaker is achieved through the moving iron core and linkage handle, thus meeting the circuit protection requirements.
While saving space, it effectively protects the DC110V circuit, simplifies the number of components, and improves the reliability and control efficiency of the circuit.
Smart Images
Figure CN223797329U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of circuit breaker protection technology, specifically to a main circuit breaker. Background Technology
[0002] Currently, the protection of DC110V busbars generally uses circuit breakers or fuses, while the power supply control of high-current DC110V generally uses contactors. There is an urgent need for a main circuit breaker that can save space and reduce the number of components.
[0003] Therefore, to meet practical needs, a main circuit breaker is provided. Summary of the Invention
[0004] In view of the deficiencies in the existing technology, the purpose of this application is to provide a main circuit breaker that combines a contactor and a circuit breaker with corresponding control components, so as to meet the actual circuit protection requirements while saving space.
[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:
[0006] This application provides a main circuit breaker, the main circuit breaker comprising:
[0007] The main circuit breaker body includes two working modules, each of which includes a disconnecting contactor and a circuit breaker.
[0008] The disconnect function contactor includes a disconnect function contactor coil and disconnect function contactor contacts;
[0009] The main circuit breaker also includes two closing function contactors, one of which corresponds to one of the working modules; wherein...
[0010] The disconnect function contactor is used to control the disconnect function contactor contacts and the circuit breaker in the corresponding working module to disconnect.
[0011] The closing function contactor is used to control the closing of both the disconnect function contactor contacts and the circuit breaker within the corresponding working module.
[0012] Based on the above technical solution, the main circuit breaker further includes:
[0013] A main circuit breaker status feedback contact configured within one of the aforementioned working modules;
[0014] The disconnect function contactor of the corresponding working module is used to control the main circuit breaker status feedback contact to disconnect.
[0015] The corresponding closing function contactor is used to control the closing of the status feedback contact of the main circuit breaker.
[0016] Based on the above technical solution, the main circuit breaker also includes a linkage handle;
[0017] Each of the closing function contactors is equipped with a moving iron core;
[0018] The linkage handle is connected to the contacts of each disconnect function contactor, each circuit breaker, and the status feedback contact of the main circuit breaker.
[0019] Each of the moving iron cores is connected to the linkage handle via a transmission connection;
[0020] The closing function contactor is used to drive the moving iron core, drive the linkage handle, and control the closure of the circuit breaker, the disconnecting function contactor contacts, and the main circuit breaker status feedback contacts.
[0021] The disconnect function contactor is also used to control the disconnect function contactor contacts to open, thereby driving the linkage handle to control the circuit breaker and the main circuit breaker status feedback contacts to open.
[0022] Compared with the prior art, the advantages of this application are:
[0023] This application combines contactors and circuit breakers with corresponding control components to meet actual circuit protection requirements while saving space. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 This is a schematic diagram of the main circuit breaker according to an embodiment of this application;
[0026] Figure 2 This is a front view of the main circuit breaker according to an embodiment of this application;
[0027] Figure 3 This is a top view of the main circuit breaker according to an embodiment of this application;
[0028] Figure 4 This is a schematic diagram of the main circuit breaker according to an embodiment of this application;
[0029] In the picture:
[0030] 1. Main circuit breaker body; 10. Circuit breaker; 2. Disconnecting function contactor; 20. Disconnecting function contactor coil; 21. Disconnecting function contactor contact; 3. Closing function contactor; 4. Main circuit breaker status feedback contact; 5. Linkage handle; 6. Moving iron core; 7. DC110V wiring terminal; 8. Control line wiring terminal; 9. Fixing plate. Detailed Implementation
[0031] 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.
[0032] The embodiments of this application will be further described in detail below with reference to the accompanying drawings.
[0033] This application provides a main circuit breaker that combines a contactor and a circuit breaker with corresponding control components, thereby meeting actual circuit protection requirements while saving space.
[0034] To achieve the aforementioned technical effects, the overall concept of this application is as follows:
[0035] A main circuit breaker, the main circuit breaker comprising:
[0036] The main circuit breaker body 1 includes two working modules, each of which includes a disconnecting contactor 2 and a circuit breaker 10.
[0037] The disconnect function contactor 2 includes a disconnect function contactor coil 20 and a disconnect function contactor contact 21;
[0038] The main circuit breaker also includes two closing function contactors 3, each of which corresponds to one of the working modules; wherein...
[0039] The disconnect function contactor 2 is used to control the disconnect function contactor contact 21 and the circuit breaker 10 in the corresponding working module to disconnect.
[0040] The closing function contactor 3 is used to control the closing of both the disconnecting function contactor contact 21 and the circuit breaker 10 within the corresponding working module.
[0041] The embodiments of this application will be further described in detail below with reference to the accompanying drawings.
[0042] See Figures 1-4As shown, this application embodiment provides a main circuit breaker, which
[0043] The main circuit breaker includes:
[0044] The main circuit breaker body 1 includes two working modules, each of which includes a disconnecting contactor 2 and a circuit breaker 10.
[0045] The disconnect function contactor 2 includes a disconnect function contactor coil 20 and a disconnect function contactor contact 21;
[0046] The main circuit breaker also includes two closing function contactors 3, each of which corresponds to one of the working modules; wherein...
[0047] The disconnect function contactor 2 is used to control the disconnect function contactor contact 21 and the circuit breaker 10 in the corresponding working module to disconnect.
[0048] The closing function contactor 3 is used to control the closing of both the disconnecting function contactor contact 21 and the circuit breaker 10 within the corresponding working module.
[0049] In this embodiment, the contactor and circuit breaker are combined with corresponding control components to meet the actual circuit protection requirements while saving space.
[0050] Furthermore, the main circuit breaker also includes:
[0051] The main circuit breaker status feedback contact 4 is configured in one of the working modules;
[0052] The disconnection function contactor 2 of the corresponding working module is used to control the main circuit breaker status feedback contact 4 to disconnect.
[0053] The corresponding closing function contactor 3 is used to control the closing of the main circuit breaker status feedback contact 4.
[0054] Furthermore, the main circuit breaker also includes a linkage handle 5;
[0055] Each of the closing function contactors 3 is equipped with a moving iron core 6;
[0056] The linkage handle 5 is connected to the contact points 21 of each disconnection function contactor, each circuit breaker 10 and the status feedback contact point 4 of the main circuit breaker.
[0057] Each of the moving iron cores 6 is connected to the linkage handle 5 in a transmission manner;
[0058] The closing function contactor 3 is used to drive the moving iron core 6, drive the linkage handle 5, and control the circuit breaker 10, the disconnecting function contactor contact 21 and the main circuit breaker status feedback contact 4 to close.
[0059] The disconnect function contactor 2 is also used to control the disconnect function contactor contact 21 to disconnect, thereby driving the linkage handle 5 to control the circuit breaker 10 and the main circuit breaker status feedback contact 4 to disconnect.
[0060] Based on the embodiments of this application, the specific implementation is as follows:
[0061] The main circuit breaker can be divided into two parts. The first part is the closing function contactor 3, which consists of two contactors and is installed externally to realize the closing function of the main circuit breaker.
[0062] The second part is the main circuit breaker structure, which integrates two disconnecting contactors 2 and two circuit breakers 10. It is divided into two working modules. Each working module includes a disconnecting contactor 2 and a circuit breaker 10 to realize the disconnection and overcurrent protection functions of the main circuit breaker.
[0063] The third part is wiring and fixing, used for DC110V power supply, control wiring and fixing of the main circuit breaker.
[0064] The closing function contactor 3 is connected to the linkage handle 5 through the moving iron core 6;
[0065] The disconnecting contactor contacts 21 of the disconnecting contactor 2 in the main circuit breaker and the circuit breaker 10 are distributed in an independent space and are linked together by the linkage handle 5.
[0066] The opening and closing of the main circuit breaker is controlled by the vehicle's DC110V control power. When DC110V is supplied, the vehicle supplies power to the closing function contactor 3. After the coil of the closing function contactor 3 is energized, the moving iron core 6 drives the linkage handle 5 to operate, and the main circuit breaker contacts close.
[0067] When DC110V power is lost, the vehicle supplies power to the disconnecting function contactor 2 inside the main circuit breaker body. After the disconnecting function contactor coil 20 of the disconnecting function contactor 2 is energized, it controls the corresponding disconnecting function contactor contact 21 to pull the linkage handle 5 to another direction, so that the contacts of the circuit breaker 10 are disconnected.
[0068] When an overcurrent occurs in the DC 110V power supply, the contacts are opened by circuit breaker 10 inside the main circuit breaker. The principle block diagram is shown in the attached figure in the instruction manual. Figure 4 As shown.
[0069] The attached diagram of the instruction manual Figures 1-3 Schematic diagram of the main circuit breaker;
[0070] The main circuit breaker includes a main circuit breaker body 1, and the main circuit breaker body 1 includes two working modules, each of which includes a disconnecting contactor 2 and a circuit breaker 10.
[0071] The disconnect function contactor 2 includes a disconnect function contactor coil 20 and a disconnect function contactor contact 21;
[0072] The main circuit breaker also includes two closing function contactors 3, one of which corresponds to one of the working modules;
[0073] Each set of disconnect function contactor contacts 21 and circuit breaker 10 is respectively installed in two cavities. Each set of disconnect function contactor 2 and circuit breaker 10 is a whole. The two sets of disconnect function contactor contacts 21 and circuit breaker 10 are connected to the fixing plates on the left and right sides by through bolts. The handles of the two sets of disconnect function contactor contacts 21 and circuit breaker 10 are connected as a whole by bolts to form a linkage handle 5.
[0074] The closing function contactor 3 is equipped with a moving iron core 6 and a mounting plate, and is bolted to the main circuit breaker via the mounting plate. The opening function contactor 2 and the closing function contactor 3 are connected to the linkage handle 5 via the moving iron core 6.
[0075] The main circuit breaker is installed in a tabletop position.
[0076] The attached diagram of the instruction manual Figure 4 Schematic diagram of the main circuit breaker;
[0077] The opening and closing of the main circuit breaker is controlled by the vehicle's DC110V control power. The two sets of main contacts are connected in series using a large wire between connection points B and C.
[0078] Main circuit breaker closing logic: When the vehicle gives the main circuit breaker closing signal, FC1 and FC2 are energized, the moving iron core drives the linkage handle to move, and a1, a2, b1, b2, and c are all closed;
[0079] Main circuit breaker disconnection logic: The vehicle sends a pulse signal to the contactor inside the main circuit breaker body, energizing FO1 and FO2, and pulling the linkage handle to the other direction, disconnecting a1, a2, b1, b2, and c.
[0080] Main circuit breaker thermal protection: When the current through the main circuit breaker exceeds a certain threshold, the circuit breaker inside the main circuit breaker will perform thermal protection, b1 and b2 will be disconnected and the linkage handle will be pushed to another direction, thereby disconnecting the main circuit breaker.
[0081] Figure 4In the diagram, FC1 and FC2 are the coils of the closing function contactor 3;
[0082] FO1 and FO2 are the disconnect function contactor coils 20 of the disconnect function contactor 2;
[0083] a1 and a2 are the disconnection function contactor contacts 21 of the disconnection function contactor 2;
[0084] b1 and b2 are the contacts of circuit breaker 10;
[0085] c represents the status feedback contact 4 of the main circuit breaker, i.e., the status feedback contact of the main circuit breaker.
[0086] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0087] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0088] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.
Claims
1. A main circuit breaker characterized by, The main circuit breaker comprises: a main circuit breaker body (1) comprising two working modules, each of which comprises a breaking function contactor (2) and a circuit breaker (10); the breaking function contactor (2) comprises a breaking function contactor coil (20) and a breaking function contactor contact (21); the main circuit breaker further comprises two closing function contactors (3), one of which corresponds to one of the working modules; wherein, the breaking function contactor (2) is used to control the breaking function contactor contact (21) and the circuit breaker (10) in the corresponding working module to be both broken; the closing function contactor (3) is used to control the breaking function contactor contact (21) and the circuit breaker (10) in the corresponding working module to be both closed.
2. The main circuit breaker of claim 1, wherein, The main circuit breaker further comprises: a main circuit breaker state feedback contact (4) arranged in one of the working modules; the breaking function contactor (2) of the corresponding working module is used to control the main circuit breaker state feedback contact (4) to be broken; the corresponding closing function contactor (3) is used to control the main circuit breaker state feedback contact (4) to be closed.
3. The main circuit breaker of claim 2, wherein, The main circuit breaker further comprises a linkage handle (5); the closing function contactor (3) is respectively provided with a moving iron core (6); the linkage handle (5) is in transmission connection with each of the breaking function contactor contacts (21), each of the circuit breakers (10) and the main circuit breaker state feedback contact (4); each of the moving iron cores (6) is in transmission connection with the linkage handle (5); the closing function contactor (3) is used to drive the moving iron core (6) to drive the linkage handle (5) to control the circuit breaker (10), the breaking function contactor contact (21) and the main circuit breaker state feedback contact (4) to be closed; the breaking function contactor (2) is further used to control the breaking function contactor contact (21) to be broken, thereby driving the linkage handle (5) to control the circuit breaker (10) and the main circuit breaker state feedback contact (4) to be broken.