Mechanical structure for controlling on-off and circuit conversion of direct-current high-voltage large current
The flip body is driven to rotate by an electric actuator, and combined with a spring sheet and a limit block, the switching of the moving contact and the static contact is realized, which solves the problems of large size and high cost of high-voltage and high-current relays and provides a compact and reliable circuit control solution.
Patent Information
- Application Number
- CN202422663542.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-01
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-11-01
AI Technical Summary
In the prior art, high-voltage, high-current relays are large in size and high in cost, resulting in a voltage mismatch between the electric vehicle battery system and the charging equipment.
An electric actuator is used to drive the flip body to rotate, and the switching between the moving contact and the static contact is achieved through a spring sheet. The limit block and tension spring are combined to improve stability. A micro motor is used as an actuator to reduce the overall structure and realize the switching and circuit conversion of DC high voltage and large current.
It has a simple structure, reliable operation, good practicality, and can stably control the on-off and circuit conversion of DC high voltage and large current, reducing equipment cost and volume.
Smart Images
Figure CN223308880U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of circuit control, in particular to a mechanical structure for controlling the on-off and circuit conversion of DC high voltage and large current. Background Art
[0002] In recent years, the new energy vehicle industry and the DC energy storage industry have entered the fast lane of development. The relevant technologies in the industry are changing with each passing day and have made significant technological progress.
[0003] The current electric vehicle charging market features both 400V and 800V battery pack platforms. This can lead to mismatches between the vehicle's battery system voltage and the charging equipment's voltage. For example, a vehicle with an 800V battery pack platform cannot directly use a 400V charger, and vice versa. To address this potential mismatch between the EV battery pack voltage and the charging equipment's voltage, high-voltage, high-current relays have traditionally been used to implement circuit switching. However, these relays are bulky and costly, necessitating improvements. Utility Model Content
[0004] The purpose of the utility model is to provide a mechanical structure which has a simple structure, stable operation and can control the on-off of DC high voltage and large current and circuit conversion.
[0005] To solve the above problems, the present invention provides a mechanical structure for controlling the on-off and circuit conversion of DC high-voltage and large current, including an electric actuator, a mounting seat, a flip body, a spring sheet, a first static contact and a second static contact. The electric actuator and the mounting seat are arranged at intervals from each other, the flip body is connected to the output end of the electric actuator, the head end of the spring sheet is connected to the flip body and the tail end is connected to the mounting seat, the first static contact and the second static contact are respectively arranged at intervals on both sides of the spring sheet, and the spring sheet is provided with a moving contact located between the first static contact and the second static contact. The electric actuator is used to drive the flip body to rotate toward either side of the spring sheet, so that the spring sheet rotates toward either side of itself, thereby causing the moving contact to abut against the first static contact or the second static contact.
[0006] Compared with the existing technology, the above scheme uses an electric actuator to drive the flip body to rotate toward both sides of the spring sheet. The rotation of the flip body drives the spring sheet to rotate around the mounting base toward both sides of itself, thereby realizing the abutment switching between the moving contact and the first static contact or the second static contact. It has a simple structure and reliable operation, and has good practicality.
[0007] In an improved solution, the flip body is provided with a tension spring, and the end of the flip body away from the electric actuator is fixedly connected to a pin shaft, the end of the tension spring away from the electric actuator is connected to the pin shaft and the end away from the electric actuator is connected to the head end of the spring leaf, so that when the flip body drives the spring leaf to rotate in the direction of the first static contact, the tension spring will apply a pulling force to the head end of the spring leaf toward one side of the first static contact; when the flip body drives the spring leaf to rotate in the direction of the second static contact, the tension spring will apply a pulling force to the head end of the spring leaf toward one side of the second static contact, that is, the abutment stability of the moving contact relative to the first static contact or the second static contact is improved by the tension spring.
[0008] In an improved solution, a mounting groove is provided at one end of the flip body away from the electric actuator, the pin shaft is fixedly inserted into the mounting groove, and one end of the tension spring is provided with a fixing ring that is sleeved onto the pin shaft, so that the tension spring can achieve a stable connection with the pin shaft through the fixing ring.
[0009] In an improved solution, it also includes a first limit block and a second limit block, which are respectively arranged at intervals on both sides of the spring sheet, and the first limit block and the second limit block are arranged adjacent to the head end of the spring sheet, and the first limit block and the second limit block are both located in the rotation path of the flip body. When the flip body abuts against the first limit block, the moving contact abuts against the first static contact, and when the flip body abuts against the second limit block, the moving contact abuts against the second static contact, thereby limiting the maximum rotation angle of the flip body by the first limit block and the second limit block, thereby avoiding the problem of excessive rotation of the flip body.
[0010] In an improved solution, the electric actuator is a micro motor with a small size, making the overall structure more compact.
[0011] In an improved solution, the first static contact and the second static contact are respectively connected to the first terminal and the second terminal of the external circuit through a hard copper busbar, and the moving contact is connected to the third terminal of the external circuit through a soft copper busbar, so that according to the abutment state of the moving contact relative to the first static contact and the second static contact, the connection state of the third terminal relative to the first terminal and the second terminal is switched, thereby realizing the switching of the external circuit. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 A schematic diagram of a mechanical structure for controlling the on / off and circuit conversion of DC high voltage and high current Figure 1 ;
[0013] Figure 2 A schematic diagram of a mechanical structure for controlling the on / off and circuit conversion of DC high voltage and high current Figure 2 .
[0014] Description of reference numerals:
[0015] 1. Electric actuator; 2. Mounting seat; 3. Flip body; 31. Mounting slot; 4. Spring leaf; 41. Moving contact; 5. Tension spring; 51. Pin; 6. First static contact; 7. Second static contact; 8. First limit block; 9. Second limit block; 10. First terminal; 11. Second terminal; 12. Third terminal; 13. Hard copper busbar; 14. Soft copper busbar. DETAILED DESCRIPTION
[0016] It should be understood by those skilled in the art that the following embodiments are merely intended to explain the technical principles of the embodiments of the present application and are not intended to limit the scope of protection of the embodiments of the present application. Those skilled in the art may adjust them as needed to suit specific applications.
[0017] In the following descriptions of the embodiments, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.
[0018] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0019] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0020] See also Figure 1 and Figure 2, an embodiment of the present utility model provides a mechanical structure for controlling the on-off and circuit conversion of DC high-voltage and large current, including an electric actuator 1, a mounting base 2, a flip body 3, a spring sheet 4, a first static contact 6, and a second static contact 7. The electric actuator 1 and the mounting base 2 are arranged at intervals from each other, the flip body 3 is connected to the output end of the electric actuator 1, the head end of the spring sheet 4 is connected to the flip body 3 and the tail end is connected to the mounting base 2, the first static contact 6 and the second static contact 7 are respectively arranged at intervals on both sides of the spring sheet 4, and the spring sheet 4 is provided with a moving contact 41 located between the first static contact 6 and the second static contact 7. The electric actuator 1 is used to drive the flip body 3 to rotate toward either side of the spring sheet 4, so that the spring sheet 4 rotates to either side of itself, thereby causing the moving contact 41 to abut against the first static contact 6 or the second static contact 7.
[0021] The above scheme adopts the electric actuator 1 to drive the flip body 3 to rotate toward the two sides of the spring sheet 4. The rotation of the flip body 3 drives the spring sheet 4 to rotate around the mounting base 2 toward the two sides of itself, thereby realizing the abutment switching between the moving contact 41 and the first static contact 6 or the second static contact 7. The structure is simple and the operation is reliable, with good practicality.
[0022] For better explanation, Figure 1 As a reference, the first static contact 6 and the second static contact 7 are respectively arranged at intervals on both sides of the spring sheet 4, which means that the first static contact 6 and the second static contact 7 are respectively arranged at intervals above and below the spring sheet 4; the electric actuator 1 is located on the left, the mounting base 2 is arranged on the right, and the spring sheet 4 is roughly arranged horizontally between the electric actuator 1 and the mounting base 2, with the leading end of the spring sheet 4 being the left end and the trailing end being the right end. Figure 1 The flip body 3 is in a state of rotating upwards. Figure 2 This is the state when the flip body 3 rotates downward.
[0023] As an improvement to this embodiment, the flip body 3 is provided with a tension spring 5, and the end of the flip body 3 away from the electric actuator 1 is fixedly connected to the pin shaft 51, the end of the tension spring 5 away from the electric actuator 1 is connected to the pin shaft 51 and the end away from the electric actuator 1 is connected to the head end of the spring sheet 4, so that when the flip body 3 drives the spring sheet 4 to rotate in the direction of the first static contact 6, the tension spring 5 will apply a pulling force to the head end of the spring sheet 4 toward the side of the first static contact 6; when the flip body 3 drives the spring sheet 4 to rotate in the direction of the second static contact 7, the tension spring 5 will apply a pulling force to the head end of the spring sheet 4 toward the side of the second static contact 7, that is, the tension spring 5 improves the abutment stability of the moving contact 41 relative to the first static contact 6 or the second static contact 7.
[0024] More specifically, an installation groove 31 is provided at the end of the flip body 3 away from the electric actuator 1, and a pin shaft 51 is fixedly inserted into the installation groove 31. One end of the tension spring 5 is provided with a fixing ring that is sleeved onto the pin shaft 51, so that the tension spring 5 can achieve a stable connection with the pin shaft 51 through the fixing ring.
[0025] As another improvement to this embodiment, it also includes a first limit block 8 and a second limit block 9, which are respectively arranged at intervals on both sides of the spring sheet 4, and the first limit block 8 and the second limit block 9 are arranged adjacent to the head end of the spring sheet 4, and the first limit block 8 and the second limit block 9 are both located in the rotation path of the flip body 3. When the flip body 3 abuts against the first limit block 8, the moving contact 41 abuts against the first static contact 6, and when the flip body 3 abuts against the second limit block 9, the moving contact 41 abuts against the second static contact 7, thereby limiting the maximum rotation angle of the flip body 3 by the first limit block 8 and the second limit block 9, thereby avoiding the problem of excessive rotation of the flip body 3.
[0026] In this embodiment, the first static contact 6 and the second static contact 7 are respectively connected to the first terminal 10 and the second terminal 11 of the external circuit via the hard copper busbar 13, and the movable contact 41 is connected to the third terminal 12 of the external circuit via the soft copper busbar 14. Thus, according to the abutment state of the movable contact 41 relative to the first static contact 6 and the second static contact 7, the connection state of the third terminal 12 relative to the first terminal 10 and the second terminal 11 is switched, thereby realizing the switching of the external circuit.
[0027] When the electric actuator 1 drives the flip body 3 to rotate upward, the flip body 3 drives the head end of the spring piece 4 upward. At this time, the spring piece 4 rotates upward around the mounting base 2 until the moving contact 41 abuts against the first static contact 6, and the third terminal 12 is connected to the first terminal 10; when the electric actuator 1 drives the flip body 3 to rotate downward, the flip body 3 drives the head end of the spring piece 4 downward. At this time, the spring piece 4 rotates downward around the mounting base 2 until the moving contact 41 abuts against the second static contact 7, and the third terminal 12 is connected to the second terminal 11.
[0028] In this embodiment, the electric actuator 1 is preferably a micro motor, which is small in size and makes the overall structure more compact. The output shaft of the micro motor is fixedly connected to one end of the flip body 3, so that the flip body 3 can rotate around the output shaft of the micro motor.
[0029] It should be noted that, in the description of this application, the terms "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is merely for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on this application. All directional indications (such as up, down, left, right, front, back, inside and outside) are only used to explain the relative positional relationship, movement, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.
[0030] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.
[0031] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.
Claims
1. A mechanical structure for controlling the on-off and circuit conversion of DC high voltage and high current, characterized in that: The invention comprises an electric actuator (1), a mounting seat (2), a flip body (3), a spring sheet (4), a first static contact (6) and a second static contact (7), wherein the electric actuator (1) and the mounting seat (2) are spaced apart from each other, the flip body (3) is connected to the output end of the electric actuator (1), the head end of the spring sheet (4) is connected to the flip body (3) and the tail end is connected to the mounting seat (2), the first static contact (6) and the second static contact (7) are spaced apart on both sides of the spring sheet (4), the spring sheet (4) is provided with a moving contact (41) located between the first static contact (6) and the second static contact (7), and the electric actuator (1) is used to drive the flip body (3) to rotate toward either side of the spring sheet (4), so that the spring sheet (4) rotates toward either side of itself, thereby causing the moving contact (41) to abut against the first static contact (6) or the second static contact (7).
2. The mechanical structure for controlling the on-off and circuit conversion of DC high voltage and large current according to claim 1, characterized in that: The flip body (3) is provided with a tension spring (5), and one end of the flip body (3) away from the electric actuator (1) is fixedly connected to a pin shaft (51), and the end of the tension spring (5) away from the electric actuator (1) is connected to the pin shaft (51), and the end close to the electric actuator (1) is connected to the head end of the spring sheet (4).
3. The mechanical structure for controlling the on-off and circuit conversion of DC high voltage and large current according to claim 2, characterized in that: An end of the flip body (3) away from the electric actuator (1) is provided with a mounting groove (31), the pin shaft (51) is fixedly inserted into the mounting groove (31), and one end of the tension spring (5) is provided with a fixing ring sleeved on the pin shaft (51).
4. The mechanical structure for controlling the on-off and circuit conversion of DC high voltage and large current according to claim 1, characterized in that: The invention also includes a first limit block (8) and a second limit block (9), wherein the first limit block (8) and the second limit block (9) are respectively arranged at intervals on both sides of the spring sheet (4), the first limit block (8) and the second limit block (9) are arranged adjacent to the head end of the spring sheet (4), and the first limit block (8) and the second limit block (9) are both located in the rotation path of the flip body (3), when the flip body (3) abuts against the first limit block (8), the moving contact (41) abuts against the first static contact (6), and when the flip body (3) abuts against the second limit block (9), the moving contact (41) abuts against the second static contact (7).
5. The mechanical structure for controlling the on-off and circuit conversion of DC high voltage and large current according to claim 1, characterized in that: The electric actuator (1) is a micro motor.
6. The mechanical structure for controlling the on-off and circuit conversion of a DC high voltage and large current according to any one of claims 1 to 5, characterized in that: The first static contact (6) and the second static contact (7) are respectively connected to a first terminal (10) and a second terminal (11) of an external circuit via a hard copper busbar (13), and the movable contact (41) is connected to a third terminal (12) of the external circuit via a soft copper busbar (14).