An operating mechanism for a plug-in double pole double throw switch

Abstract

The application belongs to the technical field of electrical switch, and particularly relates to an operating mechanism for a plug-in double-pole double-throw switch. The operating mechanism comprises an electric operating module, a rotating mechanism and a contact system; the rotating mechanism and the contact system are connected; the contact system comprises a movable contact system and a static contact system; the electric operating module drives the rotating mechanism to rotate, and switches the movable contact system to conduct with different static contact systems. The operating mechanism can be applied in a 400V charging scene, a double-pole double-throw switch switches a series 800V battery pack into a parallel 400V configuration, so that a vehicle is adapted to a low-voltage charger and obtains maximum current; in an 800V operation scene, a series state is restored to support high-performance requirements. The design not only simplifies the system architecture, but also optimizes charging efficiency and safety.

Description

Technical Field

[0001] This application belongs to the field of electrical switch technology, and in particular relates to an operating mechanism for a plug-in double-pole double-throw switch. Background Technology

[0002] The compatibility of electric vehicle charging speeds with charging infrastructure has become a key obstacle limiting their further adoption. An innovative battery voltage reconfiguration technology provides a solution for the efficient charging of 800V electric vehicles on 400V charging facilities. Compared to traditional 400V systems, the 800V system halves the current, reduces power loss to a quarter, and doubles the charging speed while maintaining the same performance.

[0003] However, the industry currently faces the following problems: 1. On-board DC / DC boost converters: boost 400V to 800V, but are expensive and charging speed is limited by the converter's power. 2. Inverter-based boost converters: utilize traction inverters for voltage boosting, are moderately priced but require additional hardware and have limited efficiency. Summary of the Invention

[0004] To solve the above-mentioned technical problems, this application provides the following technical solution:

[0005] An operating mechanism for a plug-in double-pole double-throw switch includes an electric operating module, a rotating mechanism, and a contact system; the rotating mechanism and the contact system are connected; the contact system includes a moving contact system and a stationary contact system; the electric operating module drives the rotating mechanism to rotate, switching the moving contact system to conduct with different stationary contact systems.

[0006] Preferably, the stationary contact system includes a first stationary contact, a second stationary contact, a third stationary contact, and a fourth stationary contact; the moving contact system connects the first and third stationary contacts, and simultaneously connects the second and fourth stationary contacts; or the moving contact system connects the first and second stationary contacts.

[0007] Preferably, the electric control module includes a servo motor, a reduction gear set, and an output spindle; the output spindle is connected to the rotating mechanism.

[0008] Preferably, the reduction gear set is a four-stage reduction gear set.

[0009] Preferably, the four-stage reduction gear set is integrally formed by powder metallurgy.

[0010] Preferably, the rotating mechanism includes a rotating disk, a connecting rod energy storage assembly, and a micro switch; the rotating mechanism is mounted on a mechanism mounting surface; the mechanism mounting surface is provided with symmetrically arranged rotating slots adapted to the rotating disk; the rotating disk is connected to the moving contact system; the rotating disk is movably connected to one end of the connecting rod energy storage assembly; when the rotating mechanism rotates to the dead point of the rotating slot, the connecting rod energy storage assembly triggers the micro switch.

[0011] Preferably, it also includes a middle cover assembly, on one side of which the electric control module is mounted and on the other side of which the rotating mechanism is mounted.

[0012] Preferably, the middle cover assembly is provided with a module docking positioning pin, one end of which is connected to the gearbox sealing cover, and the other end is connected to the mechanism mounting surface. Preferably, the electric control module includes a motor power plug.

[0013] Preferably, it further includes a control circuit board, which is connected to the electric control module.

[0014] Compared with existing technologies, the beneficial effects achieved by this application are: this application solves the charging efficiency and safety issues mentioned in the background technology. For example, in a 400V charging scenario, a double-pole double-throw switch switches the series-connected 800V battery pack to a parallel 400V configuration, enabling the vehicle to adapt to a low-voltage charger and obtain maximum current; in an 800V operating scenario, it restores the series connection to support high-performance requirements. This design not only simplifies the system architecture but also optimizes charging efficiency and safety.

[0015] The working principle of this application is as follows: 1. Relying on the motor and gear as the electric control module, combined with the linkage mechanism, the moving contact system is driven to switch to different voltage platforms;

[0016] 2. The electric control module outputs the initial torque of the motor with gear reduction, and an external auxiliary power supply drives the motor to rotate;

[0017] 3. The rotating mechanism provides instantaneous rotational force to the connecting rod and the energy storage spring as they pass through the dead center, driving the moving contact system to rotate;

[0018] 4. Place a micro switch on one side of the mechanism module to abut against the connecting rod;

[0019] 5. The electric control module and the mechanism module are placed in the cavities on both sides of the middle cover and fixed by bolts to form a modular assembly. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present application and form part of the specification. They are used together with the embodiments of the present application to explain the application and do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0022] Figure 2 This is a schematic diagram of the structure of this application without the outer shell;

[0023] Figure 3 This is a schematic diagram of the embodiment of this application without the outer shell structure. Figure 2 ;

[0024] Figure 4 This is a schematic diagram of the structure of the embodiment of this application without the gearbox sealing cover;

[0025] Figure 5 This is a schematic diagram of the cover structure shown in the embodiment of this application;

[0026] Figure 6 This is a schematic diagram of the structure of this application without the middle cover;

[0027] Figure 7 This is a schematic diagram of the embodiment of the present application without the middle cover structure. Figure 2 ;

[0028] Figure 8 This is a schematic diagram of the embodiment of the present application without the middle cover structure. Figure 3 ;

[0029] Figure 9 This is a schematic diagram illustrating the rotating groove and dead point structure in an embodiment of this application;

[0030] Figure 10 This is a schematic diagram of the stationary contact system and the moving contact system according to an embodiment of this application;

[0031] Figure 11 This is a circuit schematic diagram of an embodiment of this application.

[0032] In the diagram: 1. Gearbox sealing cover; 2. Electric control module; 21. Servo motor; 211. Motor power plug; 212. Control circuit board; 213. Four-stage reduction gear set; 221. Output spindle; 321. Middle cover assembly; 3. Motor positioning stop; 32. Module docking positioning pin; 4. Rotating mechanism; 41. Rotary disk; 42. Linkage energy storage assembly; 421. Linkage; 43. Micro switch; 5. Mechanism mounting surface; 51. Rotating groove; 511. Dead point; 6. Stationary contact system; 61. First stationary contact; 62. Second stationary contact; 63. Third stationary contact; 64. Fourth stationary contact; 7. Moving contact system. Detailed Implementation

[0033] 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, and 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.

[0034] In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the position 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.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] Example

[0037] like Figures 1 to 11 As shown,

[0038] An operating mechanism for a plug-in double-pole double-throw switch includes an integrated middle cover assembly 3, one side of which has a mechanism mounting cavity formed with a mechanism mounting surface 5, and the other side has a gearbox mounting cavity formed with a gearbox sealing cover 1; an electric operating module 2 integrated in the gearbox includes: a servo motor 21, a four-stage reduction gear set 22, and an output main shaft 221 passing through the middle cover; a rotating mechanism 4 mounted on the mechanism mounting surface 5 includes: a rotating disk 41 fixedly connected to the output main shaft 221, symmetrically arranged linkage energy storage components 42, and a micro switch 43 for over-dead-point detection 511. The micro switch 43 abuts against the linkage of the linkage energy storage component 42. The rotating disk 41 is rotatably connected to the linkage energy storage component 42, and the rotating disk 41 is fixedly connected to the moving contact system. The rotating disk 41 rotates back and forth in the rotating groove 51 of the mechanism mounting surface 5, driving the moving contact system 7 to rotate back and forth.

[0039] The stationary contact system 6 includes a first stationary contact 61, a second stationary contact 62, a third stationary contact 63, and a fourth stationary contact 64, which respectively correspond to Figure 11 Contacts 1 / 2 / 3 / 4 in the circuit diagram. Figures 1 to 10The moving contact system 7 corresponds to the first stationary contact 61 and the third stationary contact 63 being connected, and the second stationary contact 62 and the fourth stationary contact 64 being connected. This corresponds to two parallel 400V operating states. When the rotating disk 41 rotates to the other end of the rotating slot 51, the first stationary contact 61 and the second stationary contact 62 are connected, corresponding to a series 800V operating state.

[0040] The specific working process is as follows: The servo motor 21 is powered by an external motor power plug 211. The control circuit board 212 is connected to the micro switch 43 and the servo motor 21. When the control circuit board 212 receives an external switching signal, it starts to rotate. The output spindle 221 is driven to rotate through a four-stage reduction gear set. The output spindle 221 drives the rotating disk 41 to rotate in the rotating groove 51 of the mechanism mounting surface 5. During the rotation to the dead point, the connecting rod energy storage component 42 has an outward compression. When it rotates to the dead point 511 and just passes the dead point 511, the micro switch 43 is triggered by the connecting rod 421 of the connecting rod energy storage component 42 and sends a signal to the control circuit board 212. The control circuit board disconnects the circuit of the servo motor 21. At this time, the connecting rod energy storage component 42 has an inward rebound force that rotates the rotating disk 41 to the other end of the rotating groove 51. This back-and-forth rotation is repeated to complete the switching.

[0041] The four-stage reduction gear set 22 can be integrally formed using powder metallurgy.

[0042] The middle cover assembly 3 is equipped with a motor positioning stop 31 for servo motor installation and positioning, and is connected to the gearbox sealing cover 1 and the mechanism mounting surface 5 through the module docking positioning pin 32.

[0043] The connecting rod energy storage assembly 42 is specifically connected to the rotating disk 41 by a sleeve-type energy storage spring with a pre-compression amount of 15%-20% and a joint connecting rod 421 with a wear-resistant bushing.

[0044] It should be noted that, in this document, 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. Finally, it should be noted that the above are merely preferred embodiments of this application and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An operating mechanism for a plug-in double-pole double-throw switch, characterized in that, It includes an electric control module (2), a rotating mechanism (4), and a contact system; The rotating mechanism (4) is connected to the contact system; The contact system includes a moving contact system (7) and a stationary contact system (6); The electric control module (2) drives the rotating mechanism (4) to rotate, switching the moving contact system (7) to conduct with different stationary contact systems (6).

2. The operating mechanism for a plug-in double-pole double-throw switch as described in claim 1, characterized in that, The stationary contact system (6) includes a first stationary contact (61), a second stationary contact (62), a third stationary contact (63), and a fourth stationary contact (64); The moving contact system (7) connects the first stationary contact (61) and the third stationary contact (63), and simultaneously connects the second stationary contact (62) and the fourth stationary contact (64); Alternatively, the moving contact system (7) can connect the first stationary contact (61) and the second stationary contact (62).

3. The operating mechanism for a plug-in double-pole double-throw switch as described in claim 1, characterized in that, The electric control module (2) includes a servo motor (21), a reduction gear set and an output spindle (221); the output spindle (221) is connected to the rotating mechanism (4).

4. The operating mechanism for a plug-in double-pole double-throw switch as described in claim 3, characterized in that, The reduction gear set is a four-stage reduction gear set (22).

5. The operating mechanism for a plug-in double-pole double-throw switch as described in claim 4, characterized in that, The four-stage reduction gear set (22) is integrally formed by powder metallurgy process.

6. The operating mechanism for a plug-in double-pole double-throw switch as described in claim 1, characterized in that, The rotating mechanism (4) includes a rotating disk (41), a connecting rod energy storage assembly (42), and a micro switch (43); the rotating mechanism (4) is mounted on the mechanism mounting surface (5); The mounting surface (5) of the mechanism is provided with symmetrically arranged rotating grooves (51) adapted to the rotating disk (41); The rotating disk (41) is connected to the moving contact system (7); The rotating disk (41) is movably connected to one end of the connecting rod energy storage assembly (42); When the rotating mechanism (4) rotates to the dead point (511) of the rotating groove (51), the link energy storage assembly (42) triggers the micro switch (43).

7. The operating mechanism for a plug-in double-pole double-throw switch as described in claim 1, characterized in that, It also includes a middle cover assembly (3), on one side of which the electric control module (2) is installed, and on the other side of which the rotating mechanism (4) is installed.

8. The operating mechanism for a plug-in double-pole double-throw switch as described in claim 7, characterized in that, The middle cover assembly (3) is provided with a module docking positioning pin (32), one end of which is connected to the gearbox sealing cover (1), and the other end is connected to the mechanism mounting surface (5).

9. The operating mechanism for a plug-in double-pole double-throw switch as described in claim 3, characterized in that, The electric control module (2) includes a motor power plug (211).

10. The operating mechanism for a plug-in double-pole double-throw switch as described in claim 1, characterized in that, It also includes a control circuit board (212) which is connected to the electric control module (2).

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