Capacitor support for electric-motor controller

Abstract

The present application document belongs to the technical field of electric-motor controllers. Disclosed is a capacitor support for an electric-motor controller. The capacitor support for an electric-motor controller comprises: a support base, a first power-connection terminal, a second power-connection terminal and a sealing molding member, wherein one end of the first power-connection terminal passes through a surface of the support base, and one end of the second power-connection terminal passes through the surface of the support base. The sealing molding member is connected to the support base, a molding cavity is provided inside the sealing molding member, the end of the first power-connection terminal passing through the support base and the end of the second power-connection terminal passing through the support base can both be located inside the molding cavity, and the molding cavity can accommodate a sealant therein and enable the sealant to be cured and molded. The capacitor support for an electric-motor controller can prevent the position where the first power-connection terminal and a first power supply terminal are welded and the position where the second power-connection terminal and a second power supply terminal are welded from being exposed, thus avoiding corrosion and the formation of salt bridges at said positions; in this way, the occurrence of a short circuit is avoided, thereby ensuring the normal operation of an electric-motor controller.

Description

Capacitor bracket for motor controller Technical Field

[0001] This application document relates to the technical field of motor controllers, and in particular to a capacitor bracket for a motor controller. Background Art

[0002] A motor controller is an electronic controller that integrates multiple functional modules. It typically consists of a microprocessor, memory, input / output interfaces, and a clock circuit. It can perform various functions, such as data processing, signal acquisition, and communication control. The motor controller also includes a capacitor bracket with two power terminals connected to it. These terminals are used to connect to the two power supply terminals of an external power supply to power the motor controller.

[0003] In the prior art, a metal cover is provided above the capacitor support of the motor controller to cover the capacitor support, and two power terminals extend from the metal cover. A magnetic ring is provided at one end of the power supply, and two power terminals extend from the magnetic ring. For the connection between the motor controller and the power supply, the motor controller and the power supply are usually fixed first, and then the two power supply terminals on the power supply are laser welded to the power terminals on the motor controller to realize the power supply of the motor controller to the power supply. Due to the influence of the laser welding process, the surface of the power terminal and the surface of the power supply terminal cannot be coated before welding, nor can they be wrapped with plastic. In addition, combined with the influence of the assembly process, the power terminal and the power supply terminal must be exposed. Therefore, after the power terminal and the power supply terminal are laser welded, in a complex use environment, the power terminal and the power supply terminal are easily corroded at the laser welding point of the two due to the combined influence of temperature, humidity and dust impurities, resulting in a salt bridge. When a salt bridge forms at the laser weld point between the power supply terminal and the power supply terminal, it will extend in their respective directions, causing further corrosion of the power supply terminal and the power supply terminal. On the power supply terminal side, a short circuit may occur between the power supply terminal and the metal cover covering the capacitor bracket; on the power supply terminal side, a short circuit may occur between the power supply terminal and the power supply housing. Such short circuits will cause the motor controller to fail.

[0004] Therefore, it is urgent to study a capacitor bracket for a motor controller to solve the above problems.

[0005] Application document contents

[0006] The purpose of this application document is to provide a capacitor bracket for a motor controller, which can prevent the welding points between the first power terminal and the first power supply terminal and the welding points between the second power terminal and the second power supply terminal from being exposed to the outside and corroding and forming salt bridges, thereby avoiding short circuits and ensuring the normal operation of the motor controller.

[0007] To achieve this goal, this application document adopts the following technical solutions:

[0008] A capacitor bracket for a motor controller, wherein the capacitor bracket for the motor controller is connected to a power supply, wherein the power supply is provided with a first power supply terminal and a second power supply terminal, comprising:

[0009] A bracket base, wherein the bracket base is provided with a first through hole and a second through hole;

[0010] a first power terminal, the first power terminal being connected to the bracket base, one end of the first power terminal passing through the first through hole and extending out of the bracket base, and the first power terminal being capable of connecting to the first power supply terminal;

[0011] a second power terminal connected to the bracket base, one end of the second power terminal passing through the second through hole and extending out of the bracket base, and the second power terminal capable of being connected to the second power supply terminal;

[0012] A sealing molded part is connected to the bracket base, and is arranged on the peripheral side of one end of the first power terminal passing through the bracket base and one end of the second power terminal passing through the bracket base. The sealing molded part has a molding cavity inside, and the end of the first power terminal passing through the bracket base and the end of the second power terminal passing through the bracket base can both be located inside the molding cavity, and the molding cavity can accommodate sealant and shape the sealant.

[0013] Preferably, the sealing molded part includes a molded cover, the interior of the molded cover is a cavity to form the molded cavity, and a first opening is provided on a side of the molded cover facing the bracket base, and the bracket base can close the first opening.

[0014] Preferably, the sealing molded part also includes a molding ring, which is connected to the bracket base. The molding ring is arranged around one end of the first power terminal passing through the bracket base and one end of the second power terminal passing through the bracket base. The side wall of the molding ring and the bracket base form a molding groove, and the molding cover can be located inside the molding groove.

[0015] Preferably, the cover area of ​​the forming cover is smaller than the bottom area of ​​the forming groove, and there is a gap between the side wall of the forming cover and the side wall of the forming ring.

[0016] Preferably, a first groove is provided on one side wall of the molding cover, and a second groove is provided on one side wall of the molding ring, and the first groove and the second groove correspond to each other to form a glue injection space.

[0017] Preferably, the power supply includes a magnetic ring, a third through hole and a fourth through hole are formed on the magnetic ring, one end of the first power supply terminal passes through the third through hole and out of the magnetic ring, and one end of the second power supply terminal passes through the fourth through hole and out of the magnetic ring;

[0018] A second opening is provided on a side of the molded cover facing the magnetic ring, and the magnetic ring can close the second opening.

[0019] Preferably, a positioning groove is provided on a side of the molded cover facing the magnetic ring, and a positioning ridge is provided on a side of the magnetic ring facing the molded cover, and the positioning ridge can be embedded in the positioning groove.

[0020] Preferably, the sealing molded part is configured as a molding wall, the molding wall is connected to the bracket base, the molding wall is arranged around the end of the first electrical terminal passing through the bracket base and the end of the second electrical terminal passing through the bracket base, the side wall of the molding wall and the bracket base form the molding cavity, and the height of the molding wall away from the end of the bracket base is higher than the height of the first electrical terminal passing through the end of the bracket base and the second electrical terminal passing through the end of the bracket base.

[0021] Preferably, the power supply includes a magnetic ring, a third through hole and a fourth through hole are formed on the magnetic ring, one end of the first power supply terminal passes through the third through hole and out of the magnetic ring, and one end of the second power supply terminal passes through the fourth through hole and out of the magnetic ring;

[0022] A first adhesive layer is provided between the molding wall and the magnetic ring, and the first adhesive layer is provided around the first power supply terminal and the second power supply terminal.

[0023] Preferably, a second adhesive layer is provided between the first adhesive layer and the magnetic ring. The second adhesive layer is provided around the first power supply terminal and the second power supply terminal. The second adhesive layer can block the third through hole and the fourth through hole.

[0024] Beneficial effects of this application document:

[0025] In the capacitor bracket for the motor controller provided in the present application document, the first power terminal and the second power terminal can be located inside the molding cavity in the sealing molded part. After the first power terminal and the first power supply terminal are laser welded, and after the second power terminal and the second power supply terminal are laser welded, the welding point between the first power terminal and the first power supply terminal and the welding point between the second power terminal and the second power supply terminal can also be located inside the molding cavity. A sealant is arranged inside the molding cavity. The combination of the sealant and the sealing molded part can wrap the welding point between the first power terminal and the first power supply terminal and the welding point between the second power terminal and the second power supply terminal. In actual use, the welding point between the first power terminal and the first power supply terminal and the welding point between the second power terminal and the second power supply terminal can be prevented from being exposed to the outside and corroding and forming a salt bridge, thereby avoiding a short circuit and ensuring the normal operation of the motor controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] FIG1 is a first overall isometric view of the connection between the capacitor bracket and the power supply for the motor controller provided in this application document;

[0027] FIG2 is a first partial isometric view of the connection between the capacitor bracket and the power supply for the motor controller provided in this application document;

[0028] FIG3 is a second partial isometric view of the connection between the capacitor bracket and the power supply for the motor controller provided in this application document;

[0029] FIG4 is a third partial isometric view of the connection between the capacitor bracket and the power supply for the motor controller provided in this application document;

[0030] FIG5 is a second overall isometric view of the connection between the capacitor bracket and the power supply for the motor controller provided in this application document;

[0031] FIG6 is a third overall isometric view of the connection between the capacitor bracket and the power supply for the motor controller provided in this application document;

[0032] FIG7 is a fourth partial isometric view of the connection between the capacitor bracket and the power supply for the motor controller provided in this application document.

[0033] In the figure: 1. bracket base; 2. first power terminal; 3. second power terminal; 4. sealing molded part; 41. molded cover; 411. first groove; 412. positioning groove; 42. molded ring; 421. second groove; 43. molded groove; 44. molded wall; 45. first adhesive layer; 46. second adhesive layer; 5. magnetic ring; 51. positioning edge; 6. first power terminal; 7. second power terminal. DETAILED DESCRIPTION

[0034] The following describes in detail embodiments of the present invention. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention and are not to be construed as limiting the present invention.

[0035] In the description of this application document, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for the convenience of describing this application document and to simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application document. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0036] Unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed or removable connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application document based on specific circumstances.

[0037] Unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0038] The technical solution of this application document is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0039] As shown in Figures 1 to 7, the present application document provides a capacitor bracket for a motor controller, which can prevent the welding points between the first power terminal and the first power supply terminal and the welding points between the second power terminal and the second power supply terminal from being exposed to the outside and corroding and forming salt bridges, thereby avoiding short circuits and ensuring the normal operation of the motor controller.

[0040] The capacitor bracket for the motor controller provided in this application document is connected to the power supply, and the power supply is provided with a first power supply terminal 6 and a second power supply terminal 7. The capacitor bracket for the motor controller includes a bracket base 1, a first power terminal 2, a second power terminal 3 and a sealing molded part 4, wherein the bracket base 1 is provided with a first through hole and a second through hole. The first power terminal 2 is connected to the bracket base 1, and one end of the first power terminal 2 is passed through the surface of the bracket base 1 by the first through hole, and the first power terminal 2 can be connected to the first power supply terminal 6. The second power terminal 3 is connected to the bracket base 1, and one end of the second power terminal 3 is passed through the surface of the bracket base 1 by the second through hole, and the second power terminal 3 can be connected to the second power supply terminal 7. The sealing molded part 4 is connected to the bracket base 1 and is arranged on the peripheral side of one end of the first power terminal 2 passing through the bracket base 1 and one end of the second power terminal 3 passing through the bracket base 1. The sealing molded part 4 has a molding cavity inside. The end of the first power terminal 2 passing through the bracket base 1 and the end of the second power terminal 3 passing through the bracket base 1 can both be inside the molding cavity. The molding cavity can accommodate sealant and allow the sealant to be cured and formed.

[0041] In the capacitor bracket for the motor controller provided in the present application document, the first power terminal 2 and the second power terminal 3 can be located inside the molding cavity in the sealing molded part 4. After the first power terminal 2 and the first power supply terminal 6 are laser welded, and after the second power terminal 3 and the second power supply terminal 7 are laser welded, the welding point between the first power terminal 2 and the first power supply terminal 6 and the welding point between the second power terminal 3 and the second power supply terminal 7 can also be located inside the molding cavity. A sealant is provided inside the molding cavity. The combination of the sealant and the sealing molded part 4 can wrap the welding point between the first power terminal 2 and the first power supply terminal 6 and the welding point between the second power terminal 3 and the second power supply terminal 7. In actual use, the welding point between the first power terminal 2 and the first power supply terminal 6 and the welding point between the second power terminal 3 and the second power supply terminal 7 can be prevented from being exposed to the outside and corroded and salt bridges can be generated, thereby avoiding short circuits and ensuring the normal operation of the motor controller.

[0042] In one embodiment, the sealing molded part 4 includes a molded cover 41, the interior of the molded cover 41 is a cavity to form a molded cavity, and the molded cover 41 is provided with a first opening on the side facing the bracket base 1, and the bracket base 1 is capable of closing the first opening. Through the above arrangement, the molded cover 41 covers the welding point between the first power terminal 2 and the first power supply terminal 6, and the welding point between the second power terminal 3 and the second power supply terminal 7 from the first opening, thereby achieving full coverage of the welding point between the first power terminal 2 and the first power supply terminal 6, and the welding point between the second power terminal 3 and the second power supply terminal 7. Combined with sealing with a sealant, it can effectively protect the welding point between the first power terminal 2 and the first power supply terminal 6, and the welding point between the second power terminal 3 and the second power supply terminal 7, thereby ensuring the normal operation of the motor controller.

[0043] To facilitate the initial positioning of the molded cover 41 and to improve sealing, the molded seal 4 also includes a molded ring 42. The molded ring 42 is connected to the bracket base 1 and is disposed around the end where the first electrical terminal 2 and the second electrical terminal 3 extend from the bracket base 1. The sidewalls of the molded ring 42 form a molded groove 43 with the bracket base 1, and the molded cover 41 can be positioned within the molded groove 43. The provision of the molded ring 42 not only allows for the initial positioning of the molded cover 41 but also allows for the initial shaping of the liquid sealant, ensuring a certain thickness after molding, thereby improving the sealing between the molded cover 41 and the bottom wall of the molded groove 43.

[0044] Furthermore, the cover area of ​​the molding cover 41 is smaller than the bottom area of ​​the molding groove 43, and there is a gap between the side wall of the molding cover 41 and the side wall of the molding ring 42. This arrangement allows the sealant to be retained and formed in the gap, making it easier for workers to directly observe the molding thickness of the sealant.

[0045] In addition, since there is a gap between the side wall of the molding cover 41 and the side wall of the molding ring 42, in order to ensure that the relative position between the molding cover 41 and the molding ring 42 is fixed, a positioning block is provided on the side wall of the molding cover 41. The end of the positioning block away from the molding cover 41 can abut against the side wall of the molding ring 42 to realize the positioning of the molding cover 41 inside the molding groove 43.

[0046] To facilitate the pouring of sealant by the operator, a first groove 411 is provided on one side wall of the mold cover 41, and a second groove 421 is provided on one side wall of the mold ring 42. The first groove 411 and the second groove 421 correspond to each other to form a space for injecting sealant. This arrangement allows the operator to pour sealant through the space, facilitating the operator's operation.

[0047] The power supply includes a magnetic ring 5, which is provided with a third through-hole and a fourth through-hole. One end of a first power supply terminal 6 extends through the third through-hole, and one end of a second power supply terminal 7 extends through the fourth through-hole. A second opening is provided on the side of the molded cover 41 facing the magnetic ring 5, and the magnetic ring 5 can seal the second opening. The provision of the second opening allows the sealant to seal the first and second power supply terminals 6, 7 at the second opening, thereby protecting the first and second power supply terminals 6, 7.

[0048] To further improve the positioning stability of the molded cover 41, a positioning groove 412 is provided on the side of the molded cover 41 facing the magnetic ring 5, and a positioning rib 51 is provided on the side of the magnetic ring 5 facing the molded cover 41. The positioning rib 51 can be embedded in the positioning groove 412. The provision of the positioning rib 51 and the positioning groove 412 can limit the relative displacement between the molded cover 41 and the magnetic ring 5, thereby improving the positioning stability of the molded cover 41.

[0049] In another embodiment, the sealing molded part 4 is configured as a molding wall 44, which is connected to the bracket base 1. The molding wall 44 is arranged around the end of the first electrical terminal 2 passing through the surface of the bracket base 1 and the end of the second electrical terminal 3 passing through the surface of the bracket base 1. The side wall of the molding wall 44 forms a molding cavity with the bracket base 1, and the height of the molding wall 44 away from the end of the bracket base 1 is higher than the height of the end of the first electrical terminal 2 passing through the bracket base 1 and the end of the second electrical terminal 3 passing through the bracket base 1. By providing the forming wall 44 to form a forming cavity, a worker can directly pour sealant into the forming cavity. Since the height of the forming wall 44 away from the end of the bracket base 1 is higher than the height of the end of the first power terminal 2 extending through the bracket base 1 and the end of the second power terminal 3 extending through the bracket base 1, after the sealant is formed inside the forming cavity, the sealant can fully surround the welding point between the first power terminal 2 and the first power supply terminal 6 and the welding point between the second power terminal 3 and the second power supply terminal 7, thereby effectively protecting the welding point between the first power terminal 2 and the first power supply terminal 6 and the welding point between the second power terminal 3 and the second power supply terminal 7, thereby ensuring the normal operation of the motor controller.

[0050] Furthermore, to protect the first and second power supply terminals 6, 7, a first adhesive layer 45 is disposed between the molded wall 44 and the magnetic ring 5. The first adhesive layer 45 surrounds the first and second power supply terminals 6, 7. A second adhesive layer 46 is also disposed between the first adhesive layer 45 and the magnetic ring 5. The second adhesive layer 46 surrounds the first and second power supply terminals 6, 7, and seals the third and fourth through holes. Both the first and second adhesive layers 45, 46 are solid adhesive layers.

[0051] Obviously, the above embodiments of this application document are merely examples for the purpose of clearly illustrating this application document, and are not intended to limit the implementation methods of this application document. Those skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application document shall be included within the scope of protection of the claims of this application document.

Claims

1. A capacitor support for a motor controller, the capacitor support for the motor controller is connected to a power supply, the power supply is provided with a first power supply terminal (6) and a second power supply terminal (7), characterized in that: include: A support base (1), wherein the support base (1) is provided with a first through hole and a second through hole; A first power terminal (2), the first power terminal (2) being connected to the bracket base (1), one end of the first power terminal (2) passing through the first through hole and out of the bracket base (1), and the first power terminal (2) being capable of connecting to the first power supply terminal (6); A second power terminal (3), the second power terminal (3) being connected to the bracket base (1), one end of the second power terminal (3) passing through the bracket base (1) through the second through hole, and the second power terminal (3) being capable of being connected to the second power supply terminal (7); A sealing molded part (4), the sealing molded part (4) is connected to the bracket base (1), the sealing molded part (4) is arranged on the peripheral side of one end of the first power terminal (2) passing through the bracket base (1) and one end of the second power terminal (3) passing through the bracket base (1), the sealing molded part (4) has a molding cavity inside, the end of the first power terminal (2) passing through the bracket base (1) and the end of the second power terminal (3) passing through the bracket base (1) can both be located inside the molding cavity, and the molding cavity can contain a sealant and solidify the sealant.

2. The capacitor bracket for a motor controller according to claim 1, characterized in that: The sealing molded part (4) comprises a molded cover (41), the interior of the molded cover (41) is a cavity to form the molded cavity, and the molded cover (41) is provided with a first opening on a side facing the support base (1), and the support base (1) is capable of closing the first opening.

3. The capacitor support for a motor controller according to claim 2, characterized in that: The sealing molded part (4) further comprises a molding ring (42), the molding ring (42) being connected to the bracket base (1), the molding ring (42) being arranged around one end of the first power terminal (2) passing through the bracket base (1) and one end of the second power terminal (3) passing through the bracket base (1), the side wall of the molding ring (42) and the bracket base (1) forming a molding groove (43), and the molding cover (41) being able to be located inside the molding groove (43).

4. The capacitor support for a motor controller according to claim 3, characterized in that: The cover area of ​​the molding cover (41) is smaller than the bottom area of ​​the molding groove (43), and there is a gap between the side wall of the molding cover (41) and the side wall of the molding ring (42).

5. The capacitor support for a motor controller according to claim 4, characterized in that: A first groove (411) is provided on one side wall of the molding cover (41), and a second groove (421) is provided on one side wall of the molding ring (42); the first groove (411) and the second groove (421) correspond to each other to form a glue injection space.

6. The capacitor support for a motor controller according to claim 2, characterized in that: The power supply comprises a magnetic ring (5), a third through hole and a fourth through hole are provided on the magnetic ring (5), one end of the first power supply terminal (6) passes through the third through hole and out of the magnetic ring (5), and one end of the second power supply terminal (7) passes through the fourth through hole and out of the magnetic ring (5); The molded cover (41) is provided with a second opening on a side facing the magnetic ring (5), and the magnetic ring (5) is capable of closing the second opening.

7. The capacitor support for a motor controller according to claim 6, characterized in that: A positioning groove (412) is provided on the side of the molded cover (41) facing the magnetic ring (5), and a positioning ridge (51) is provided on the side of the magnetic ring (5) facing the molded cover (41), and the positioning ridge (51) can be embedded in the positioning groove (412).

8. The capacitor support for a motor controller according to claim 1, characterized in that: The sealing molding (4) is configured as a molding wall (44), the molding wall (44) being connected to the bracket base (1), the molding wall (44) being arranged around the end of the first electrical terminal (2) passing through the bracket base (1) and the end of the second electrical terminal (3) passing through the bracket base (1), the side wall of the molding wall (44) and the bracket base (1) forming the molding cavity, and the height of the molding wall (44) away from the end of the bracket base (1) is higher than the height of the end of the first electrical terminal (2) passing through the bracket base (1) and the end of the second electrical terminal (3) passing through the bracket base (1).

9. The capacitor support for a motor controller according to claim 8, characterized in that: The power supply comprises a magnetic ring (5), a third through hole and a fourth through hole are provided on the magnetic ring (5), one end of the first power supply terminal (6) passes through the third through hole and out of the magnetic ring (5), and one end of the second power supply terminal (7) passes through the fourth through hole and out of the magnetic ring (5); A first adhesive layer (45) is provided between the molding wall (44) and the magnetic ring (5), and the first adhesive layer (45) is arranged around the first power supply terminal (6) and the second power supply terminal (7).

10. The capacitor support for a motor controller according to claim 9, characterized in that: A second glue layer (46) is also provided between the first glue layer (45) and the magnetic ring (5); the second glue layer (46) is arranged around the first power supply terminal (6) and the second power supply terminal (7); the second glue layer (46) is capable of sealing the third through hole and the fourth through hole.

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