Conductive assembly plate, connecting plate assembly, preparation method of conductive assembly plate and connecting plate assembly, and electric pump

Abstract

The embodiment of the invention discloses a conductive component board, which comprises a connecting part and a conductive main body, and the connecting part is fixedly connected with the conductive main body. Or the connecting part and the conductive main body are of an integrated structure, and the connecting part comprises an elastic part. The invention further discloses a connecting plate assembly and a preparation method thereof. The invention further discloses the electric pump comprising the connecting plate assembly. The connecting plate assembly has the characteristic that the production efficiency of the connecting plate assembly is improved.

Description

[Technical Field]

[0001] This application relates to the field of vehicles, and more particularly to components of vehicle lubrication and / or cooling systems. [Background Technology]

[0002] Electric pumps primarily provide power to a vehicle's lubrication and / or cooling systems. An electric pump includes a connecting plate assembly and a stator assembly. The connecting plate assembly comprises several conductive parts and a body. The conductive parts connect to the stator assembly. Before injection molding, the conductive parts are a single integrated structure. To ensure the stability of the connection between the conductive parts and the stator assembly, the assembly precision between the conductive parts and the injection mold is high, resulting in low production efficiency for the connecting plate assembly. Therefore, improving the production efficiency of the connecting plate assembly is a technical challenge. [Summary of the Invention]

[0003] The purpose of this application is to provide conductive component boards, connecting plate assemblies, their preparation methods, and electric pumps, which can improve the production efficiency of connecting plate assemblies.

[0004] To achieve the above objectives, one embodiment of this application adopts the following technical solution:

[0005] A conductive component board includes a connecting portion and a conductive body, wherein the connecting portion and the conductive body are fixedly connected; or the connecting portion and the conductive body are integrally formed, wherein the connecting portion includes an elastic portion.

[0006] In the above technical solution, the conductive component plate includes a connecting part and a conductive body, and the connecting part and the conductive body are fixedly connected; or the connecting part and the conductive body are integrally structured, and the connecting part includes an elastic part. When injection molding with the conductive component plate as an insert is a step in the preparation of the connecting plate assembly, the conductive component plate and the injection mold can be elastically aligned and assembled, which is beneficial to improving the production efficiency of the connecting plate assembly.

[0007] This application also discloses the following technical solution in one embodiment: a connecting plate assembly, the connecting plate assembly including a limiting member and a conductive member, the conductive member and the limiting member being injection molded, the conductive member including a plurality of conductive portions, each conductive portion including a conductive body and an auxiliary portion, the conductive body being connected to the auxiliary portion, at least one of the auxiliary portions including an elastic portion; and / or at least one of the auxiliary portions including an elastic portion; the auxiliary portion including a first auxiliary portion and a second auxiliary portion, the connecting plate assembly including a gap portion, the gap portion preventing the first auxiliary portion and the second auxiliary portion from contacting each other.

[0008] In the above technical solution, the conductive part includes a conductive body and an auxiliary part, the conductive body is connected to the auxiliary part, at least one auxiliary part includes an elastic portion; and / or at least one auxiliary part includes an elastic portion; the auxiliary part includes a first auxiliary part and a second auxiliary part, the connecting plate assembly includes a gap portion, the gap portion prevents the first auxiliary part and the second auxiliary part from contacting each other. Since the limiting part and the conductive part are integrally structured before injection molding, the conductive part can be elastically aligned with the injection mold during assembly, which is beneficial to improving the production efficiency of the connecting plate assembly.

[0009] This application also discloses the following technical solution in one embodiment: a method for preparing a connecting plate assembly, the method comprising:

[0010] Obtain the connecting part, including the elastic part;

[0011] Fabrication of conductive component board: welding and fixing the conductive body and the connecting part; or, the conductive body and the connecting part are integrally formed;

[0012] Preparation of the limiting component: injection molding is performed with the conductive component plate as an insert at least;

[0013] Divide the connecting portion.

[0014] In the above technical solution, obtaining the connecting part including the elastic part and preparing the conductive component plate includes welding and fixing the conductive body and the connecting part; or, the conductive body and the connecting part are integrally formed; when the conductive component plate is used as an insert for injection molding, the conductive component plate and the injection mold can be elastically aligned and assembled, which is beneficial to improving the production efficiency of the connecting plate assembly.

[0015] This application also discloses the following technical solution in one embodiment: an electric pump, the electric pump including the stator winding and the connecting plate assembly, the stator assembly and the connecting plate assembly being electrically connected, the connecting plate assembly including a limiting member and a conductive member, the conductive member being injection molded with the limiting member, the conductive member including a plurality of conductive portions, each conductive portion including a conductive body and an auxiliary portion, the conductive body being connected to the auxiliary portion, at least one of the auxiliary portions including an elastic portion; and / or at least one of the auxiliary portions including an elastic portion; the auxiliary portion including a first auxiliary portion and a second auxiliary portion, the connecting plate assembly including a gap portion, the gap portion preventing the first auxiliary portion and the second auxiliary portion from contacting each other.

[0016] In the above technical solution, the conductive part includes a conductive body and an auxiliary part, the conductive body is connected to the auxiliary part, at least one auxiliary part includes an elastic portion; and / or at least one auxiliary part includes an elastic portion; the auxiliary part includes a first auxiliary part and a second auxiliary part, the connecting plate assembly includes a gap portion, the gap portion prevents the first auxiliary part and the second auxiliary part from contacting each other. Since the limiting part and the conductive part are integrally structured before injection molding, the conductive part can be elastically aligned with the injection mold during assembly, which is beneficial to improving the production efficiency of the connecting plate assembly. [Attached Image Description]

[0017] Figure 1 This is a schematic diagram of an electric pump according to an embodiment of this application;

[0018] Figure 2 yes Figure 1 A schematic diagram of a first embodiment of the connecting plate assembly;

[0019] Figure 3 yes Figure 2 A schematic diagram of the central conductive component from a first-person perspective;

[0020] Figure 4 yes Figure 2 A schematic diagram of the central conductive component from a first-person perspective;

[0021] Figure 5 This is a schematic diagram of the first embodiment of the conductive component board;

[0022] Figure 6 yes Figure 1 A schematic diagram of a second embodiment of the connecting plate assembly;

[0023] Figure 7 yes Figure 6 A schematic diagram of the central conductive component from a first-person perspective;

[0024] Figure 8 yes Figure 6 A schematic diagram of the conductive component from a second perspective;

[0025] Figure 9 This is a schematic diagram of a second embodiment of the conductive component board;

[0026] Figure 10 yes Figure 2 or Figure 6 A schematic diagram of the connecting plate assembly from another perspective;

[0027] Figure 11 yes Figure 2 The diagram shows a step-by-step flowchart of the manufacturing method for the connecting plate assembly.

[0028] Reference numerals: 11. Pump cover; 12. Rotating assembly; 121. Rotor assembly; 122. Impeller assembly; 13. Stator assembly; 131. Housing; 132. Stator winding; 14. Connecting plate assembly; 1411. Conductive component plate; 141. Conductive element; 142. Limiting element; 1411. Conductive component plate; 143. Conductive part; 143a. Conductive body; 1430b. Connecting part; 143b. Auxiliary part; 143b1. First auxiliary part; 143b 2. Second auxiliary part; 143b3. First end; 143b4. Second end; 1435. Elastic part; 1435c. First elastic portion; 1435d. Second elastic portion; 1435e. Third elastic portion; 1435f. Elastic portion; 143f. Limiting part; 143f1. Positioning hole; 1436. End; 145. Separator; 1451. Gap; 1452. Recess; 15. Shaft; 16. Rotor cavity; 17. Impeller cavity.

Detailed Implementation Methods

[0029] The present application will be further described below with reference to the accompanying drawings and specific embodiments:

[0030] To enable those skilled in the art to better understand the technical solutions of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the drawings described below are merely some embodiments of this application. Those skilled in the art can obtain other drawings based on these drawings without creative effort. The directional terms such as "up" and "down" used herein are defined by the relative positions of the components shown in the drawings, and are only used for clarity and convenience in expressing the technical solutions. It should be understood that the directional terms used herein should not limit the scope of protection claimed in this application.

[0031] Please refer to Figures 1 to 10This application provides an electric pump including a pump cover 11, a rotating assembly 12, and a stator assembly 13. The stator assembly 13 includes a connecting plate assembly 14, a stator winding 132, a shaft 15, and a housing 131. The pump cover 11 and the stator assembly 13 are sealed and fixed. It should be noted that this sealing and fixing refers to preventing the working medium from leaking to the outside of the electric pump during operation. The shaft 15 is injection molded and fixed to the housing 131. It can be understood that a portion of the shaft 15 is embedded in the housing 131. The electric pump has an internal pump cavity, and the rotating assembly 12 is located within the pump cavity. The pump cavity includes a rotor cavity 16 and an impeller cavity 17, which are connected. The rotating assembly 12 includes a rotor assembly 121 and an impeller assembly 122. The rotor assembly 121 includes a permanent magnet and is located radially inside the stator winding 132. At least a portion of the rotor assembly 121 is located in the rotor cavity 16, and the impeller assembly 122 is located in the impeller cavity 17, allowing the working medium to flow through the pump's internal cavity. In one specific embodiment, at least a portion of the other end of the shaft 15 is located within the rotor cavity 16, and at least a portion of the rotating assembly 12 is fitted around the outer periphery of the shaft 15, with the rotating assembly 12 and the shaft 15 being drive-connected. Alternatively, in other embodiments, the rotating assembly 12 and the shaft 15 are fixedly connected, and the shaft 15 rotates together with the rotor assembly 121. The connecting plate assembly 14 includes a limiting member 142 and a conductive member 141. The limiting member 142 is limited or fixedly connected to the stator winding 132, and the conductive member 141 is limited or fixedly connected to the limiting member 142. Alternatively, the electric pump may not include the pump cover 11, which is integrated into an external structure. This arrangement facilitates the integrated design of the electric pump, making its structure more compact and promoting miniaturization and weight reduction. When the electric pump is working, the current of the stator winding 132 is controlled, thereby controlling the excitation magnetic field generated by the stator winding 132. The rotating component 12 rotates around the shaft 15 under the action of the excitation magnetic field.

[0032] Please refer to Figures 1 to 10The electric pump also includes a connecting plate assembly 14, which is electrically connected to the stator winding 132. The connecting plate assembly 14 includes a conductive element 141 and a limiting element 142. The conductive element 141 and the limiting element 142 are injection molded. The manufacturing process of the connecting plate assembly 14 is relatively simple, which is beneficial to improving the production efficiency of the connecting plate assembly 14. The conductive element 141 includes several conductive parts 143, which are connected to the stator winding 132. The conductive part 143 includes a conductive body 143a and an auxiliary part 143b. The conductive body 143a is connected to the auxiliary part 143b. In this embodiment, the conductive body 143a and the auxiliary part 143b are integrally structured. At least one auxiliary part 143b includes an elastic portion 1435f; and / or at least one auxiliary part 143b includes an elastic portion 1435. The auxiliary part 143b includes a first auxiliary part. The connecting plate assembly 14 includes a first auxiliary part 143b1 and a second auxiliary part 143b2, and a gap portion 1451. Further, the conductive element 141 includes a gap portion 1451, which prevents the first auxiliary part 143b1 and the second auxiliary part 143b2 from contacting. Since the limiting member 142 and the conductive element 141 are integrally formed before injection molding, the conductive parts 143 can be elastically aligned with the injection mold during assembly, which is beneficial for improving the production efficiency of the connecting plate assembly 14. In this embodiment, the first auxiliary part 143b1 and the second auxiliary part 143b2 are arranged adjacent to each other. Before injection molding, the conductive element 141 and the limiting member 142 are integrally formed, and the conductive parts 143 can be divided into several independent conductive parts 143 at the position corresponding to the gap portion 1451. During injection molding, the relative positions of each conductive part 143 are less likely to shift, which is beneficial for improving the yield of the connecting plate assembly 14.

[0033] In one embodiment, please refer to Figures 2 to 5 , Figure 10 The connecting plate assembly includes a partition 145, which includes a gap 1451 and a recess 1452. The limiting member 142 includes the recess 1452, which communicates with the gap 1451. At least one first auxiliary part 143b1 includes an elastic portion 1435f, and at least one second auxiliary part 143b2 includes an elastic portion 1435f. At least a portion of the elastic portion 1435f is located within the recess 1452. Dividing one elastic portion 1435 forms at least two elastic portions 1435f. The conductive component plate 1411 is used as an insert for injection molding. When the conductive component plate 1411 is assembled with the injection mold, the length of the elastic portion 1435 can be relatively long, and the length that the elastic portion 1435 can extend after being stressed is relatively long. As a result, the conductive component plate 1411 and the injection mold can be elastically aligned and assembled, which is beneficial to improving the production efficiency of the connecting plate assembly 14.

[0034] In one embodiment, please refer to Figures 6 to 10The limiting member 142 includes a recess 1452, which communicates with the gap 1451. At least one first auxiliary part 143b1 includes an elastic part 1435, and a second auxiliary part 143b2 includes an end 1436, which is connected to the conductive body 143a. At least a portion of the elastic part 1435 and at least a portion of the end 1436 are located within the recess 1452. When the connecting part 1430b is divided, the force-bearing area of ​​the division includes the end 1436 and the elastic part 1435. The end 1436 has lower elasticity than the elastic part 1435, so the external force required for the division can be relatively small.

[0035] Please refer to Figures 6 to 10 At least one first auxiliary part 143b1 includes a second end 143b4, and at least one second auxiliary part 143b2 includes a first end 143b3. The first end 143b3 is connected to the conductive body 143a, and the second end 143b4 is connected to the elastic part 1435. At least a portion of the first end 143b3 and at least a portion of the second end 143b4 are located in the recess 1452. The connecting part 1430b is divided from the end 1436. The end 1436 is divided into the first end 143b3 and the second end 143b4. When divided, the end 1436 has lower elasticity than the elastic part 1430b, and the external force required for division can be relatively small.

[0036] Please refer to Figure 5 and Figure 9 This application discloses a conductive component plate 1411, which includes a connecting portion 1430b and a conductive body 143a, with the connecting portion 1430b and the conductive body 143a fixedly connected; or the connecting portion 1430b and the conductive body 143a are integrally structured, and the connecting portion 1430b includes an elastic portion 1435. When the conductive component plate 1411 is used as an insert for injection molding, the elastic portion 1435 can easily extend under force when the conductive component plate 1411 is assembled with the injection mold, thereby enabling the conductive component plate 1411 and the injection mold to be elastically aligned, which helps to improve the production efficiency of the connecting plate assembly.

[0037] The connecting portion 1430b includes an end portion 1436, which extends from the conductive body 143a toward the elastic portion 1435. The manufacturing process of the end portion 1436 is simpler than that of the elastic portion 1435, and the manufacturing process of the connecting portion 1430b is also simpler. In addition, the end portion 1436 has lower elasticity than the elastic portion 1435, so the external force required for the separation of the connecting portion 1430b from the end portion 1436 is relatively small.

[0038] Please refer to Figure 5The elastic portion 1435 includes at least one first elastic segment 1435c and at least one second elastic segment 1435d. The first elastic segment 1435c connects to the second elastic segment 1435d. The extension direction of the first elastic segment 1435c and the extension direction of the second elastic segment 1435d form an angle α. When the conductive component plate 1411 is used as an insert for injection molding, the elastic portion 1435 can easily be stretched under force when the conductive component plate 1411 is assembled with the injection mold. This allows for elastic alignment between the conductive component plate 1411 and the injection mold, thereby improving the production efficiency of the connecting plate assembly 14. Further, the elastic portion 1435 includes at least two first elastic segments 1435c and at least one second elastic segment 1435d. α is less than 90 degrees; further, α is greater than 15 degrees and less than 60 degrees; α can be the angle between the extension direction of the first elastic portion 1435c and the extension direction of the second elastic portion 1435d in the stressed or unstressed state of the elastic portion 1435. In one embodiment, the elastic portion 1435 is wavy; in other embodiments, the elastic portion 1435 may also be of other shapes.

[0039] In one embodiment, please refer to Figure 9 The elastic portion 1435 includes a first elastic portion 1435c, a second elastic portion 1435d, and a third elastic portion 1435e. The first elastic portion 1435c is connected to the second elastic portion 1435d, and the second elastic portion 1435d is connected to the third elastic portion 1435e. In the circumferential direction of the conductive component plate, there is a gap between the third elastic portion 1435e and the first elastic portion 1435c. When the conductive component plate 1411 is used as an insert for injection molding, the elastic portion 1435 can easily be stretched under force when the conductive component plate 1411 is assembled with the injection mold. As a result, the assembly of the conductive component plate 1411 and the injection mold can be elastically aligned, which helps to improve the production efficiency of the connecting plate assembly. Furthermore, there is an angle β between the extending direction of the first elastic portion 1435c and the extending direction of the second elastic portion 1435d. In one embodiment, β is greater than 30 degrees. β can be the angle between the extending direction of the first elastic portion 1435c and the extending direction of the second elastic portion 1435d in either the stressed or unstressed state of the elastic portion 1435. In one embodiment, the elastic portion 1435 is U-shaped; in other embodiments, the elastic portion 1435 may also have other shapes.

[0040] Please refer to Figure 5 and Figure 9The conductive body 143a includes a limiting part 143f. The plane on which the limiting part 143f is located is the same plane as the plane on which the elastic part 1435 is located. In the circumferential direction of the conductive component plate 1411, the elastic part 1435 is located between two adjacent limiting parts 143f. The limiting part 143f has a positioning hole 143f1. In the circumferential direction of the conductive component plate 1411, the elastic part 1435 is located between two adjacent positioning holes 143f1. The positioning post of the injection mold is clearance-fitted with the positioning hole 143f1, which is beneficial for fixing the position of the conductive component 141. The positional tolerance of the positioning hole 143f1 and the positional tolerance of the positioning post are both subject to tolerance. The elastic part 1435 being located between two adjacent limiting parts 143f helps to ensure the positional tolerance of the positioning hole 143f1.

[0041] Please refer to Figures 2 to 11 , Figure 11 This is a schematic flowchart of one step in the manufacturing method of the connecting plate assembly 14. The manufacturing method of the connecting plate assembly 14 includes:

[0042] Obtain the connecting portion 1430b, which includes the elastic portion 1435;

[0043] Fabricating conductive component plate 1411: welding and fixing conductive body 143a and connecting part 1430b; or, conductive body 143a and connecting part 1430b are integrally formed.

[0044] Preparation of limiting member 142: Injection molding is performed with at least conductive component plate 1411 as an insert. When injection molding with conductive component plate 1411 as an insert, the relative positions between each conductive body 143a are less likely to shift, which is beneficial to improving the yield of connecting plate assembly 14; in addition, the number of inserts is relatively small, and the injection molding process is relatively simple.

[0045] The connecting portion 1430b is divided to form two auxiliary portions 143b, that is, one connecting portion 1430b is divided into two auxiliary portions 143b. After dividing the connecting portion 1430b, a gap portion 1451 is formed. The gap portion 1451 prevents two adjacent auxiliary portions 143b from contacting each other. At least a portion of one auxiliary portion 143b is located on one side of the gap portion 1451, and at least a portion of the other auxiliary portion 143b is located on the other side of the gap portion 1451. The preparation of the limiting member 142 can be carried out simultaneously with the division of the connecting part 1430b; or the limiting member 142 can be prepared first, and then the connecting part 1430b can be divided. Before injection molding, the conductive component plate 1411 serves as an insert, at which point the conductive parts 143 are an integral structure. After injection molding, the conductive parts 1430b can be divided into several independent conductive parts 143 at the position corresponding to the dividing part 145; or the connecting part 1430b can be divided first, and then the limiting member 142 can be prepared. Before injection molding, the conductive component plate 1411 is positioned. After positioning, the conductive parts 143 are an integral structure, and the conductive parts 143 are divided into several independent conductive parts 143 at the position corresponding to the dividing part 145 before injection molding.

[0046] When the conductive component plate 1411 is injection molded as an insert, a recess 1452 is formed. The recess 1452 is connected to the gap 1451. Of course, in other embodiments, the recess 1452 can also be prepared in other ways. The recess 1452 can serve as a mark for the dividing connection portion 1430b, which is helpful in determining the dividing position and thus helps to improve the production efficiency of the connecting plate assembly 14.

[0047] The method for preparing the connecting plate assembly 14 includes:

[0048] To prepare the connecting part 1430b: weld the fixed end 1436 and the elastic part 1435; or, the end 1436 and the elastic part 1435 are integrally formed.

[0049] The end portion 1436 is divided; and / or the elastic portion 1435 is divided. If one of the connecting portions 1430b is divided from the end portion 1436, the end portion 1436 is divided to form a first end portion 143b3 and a second end portion 143b4; if one of the connecting portions 1430b is divided from the elastic portion 1435, the elastic portion 1435 is divided to form at least two elastic portions 1435f; if it is divided from the connection between the end portion 1436 and the elastic portion 1435, a connecting portion 1430b is divided, and at least a portion of the end portion 1436 and at least a portion of the elastic portion 1435 are located within the recess 1452.

[0050] It should be noted that the above embodiments are only used to illustrate this application and are not intended to limit the technical solutions described in this application. Although this specification has described this application in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to this application. All technical solutions and improvements that do not depart from the spirit and scope of this application should be covered within the scope of the claims of this application.

Claims

1. A conductive component board, characterized in that, The conductive component board includes a connecting part (1430b) and a conductive body (143a), the connecting part (1430b) and the conductive body (143a) being fixedly connected; or the connecting part (1430b) and the conductive body (143a) being an integral structure, the connecting part (1430b) including an elastic part (1435).

2. The conductive component board according to claim 1, characterized in that, The connecting portion (1430b) includes an end portion (1436) that extends from the conductive body (143a) toward the elastic portion (1435).

3. The conductive component board according to claim 1 or 2, characterized in that, The elastic portion (1435) includes at least one first elastic portion (1435c) and at least one second elastic portion (1435d), the first elastic portion (1435c) is connected to the second elastic portion (1435d), and there is an angle between the extending direction of the first elastic portion (1435c) and the extending direction of the second elastic portion (1435d).

4. The conductive component board according to claim 3, characterized in that, The elastic portion (1435) includes a third elastic portion (1435e), and the second elastic portion (1435d) is connected to the third elastic portion (1435e). In the circumferential direction of the conductive component plate, there is a gap between the third elastic portion (1435e) and the first elastic portion (1435c).

5. The conductive component board according to any one of claims 1-4, characterized in that, The conductive body (143a) includes a limiting part (143f), the plane where the limiting part (143f) is located is the same plane as the plane where the elastic part (1435) is located. In the circumferential direction of the conductive component plate, the elastic part (1435) is located between two adjacent limiting parts (143f).

6. A connecting plate assembly, characterized in that, The connecting plate assembly includes a conductive element (141) and a limiting element (142), wherein the conductive element (141) and the limiting element (142) are injection molded together. The conductive element (141) includes a plurality of conductive portions (143), wherein each conductive portion (143) includes a conductive body (143a) and an auxiliary portion (143b), wherein the conductive body (143a) is connected to the auxiliary portion (143b), wherein at least one of the auxiliary portions (143b) includes an elastic portion (1435f); and / or at least one of the auxiliary portions (143b) includes an elastic portion (1435); wherein the auxiliary portion includes a first auxiliary portion (143b1) and a second auxiliary portion (143b2), and the connecting plate assembly includes a gap portion (1451) such that the first auxiliary portion (143b1) and the second auxiliary portion (143b2) do not contact each other.

7. The connecting plate assembly according to claim 6, characterized in that, The limiting member (142) includes a recess (1452) that communicates with the gap (1451), at least one first auxiliary part (143b1) includes the elastic portion (1435f), at least one second auxiliary part (143b2) includes the elastic portion (1435f), and at least a portion of the elastic portion (1435f) is located within the recess (1452).

8. The connecting plate assembly according to claim 6 or 7, characterized in that, The limiting member (142) includes a recess (1452) that communicates with the gap (1451), at least one first auxiliary part (143b1) includes an elastic part (1435), and the second auxiliary part (143b2) includes an end (1436) that is connected to the conductive body (143a). At least a portion of the elastic part (1435) and at least a portion of the end (1436) are located within the recess (1452).

9. The connecting plate assembly according to any one of claims 6-8, characterized in that, At least one of the first auxiliary portions (143b1) includes a second end portion (143b4), and at least one of the second auxiliary portions (143b2) includes a first end portion (143b3). The first end portion (143b3) is connected to the conductive body (143a), and the second end portion (143b4) is connected to the elastic portion (1435). At least a portion of the first end portion (143b3) and at least a portion of the second end portion (143b4) are located within the recess (1452).

10. A method for preparing a connecting plate assembly, characterized in that, The preparation method includes: Obtain the connecting part (1430b) including the elastic part (1435); Fabrication of conductive component board (1411): Welding and fixing the conductive body (143a) and the connecting part (1430b); or, the conductive body (143a) and the connecting part (1430b) are integrally formed; Preparation of limiting member (142): injection molding with at least the conductive component plate (1411) as an insert; The connecting portion (1430b) is divided.

11. The preparation method according to claim 10, characterized in that, The preparation method includes: To prepare the connecting part (1430b): weld the fixed end (1436) and the elastic part (1435); or, the end (1436) and the elastic part (1435) are integrally formed. Divide the end portion (1436); and / or divide the elastic portion (1435).

12. An electric pump, characterized in that, The electric pump includes a stator winding (132) and a connecting plate assembly (14), which are electrically connected. The connecting plate assembly (14) includes a conductive element (141) and a limiting element (142). The conductive element (141) and the limiting element (142) are injection molded together. The conductive element (141) includes a plurality of conductive portions (143), each of which includes a conductive body (143a) and an auxiliary portion (143b). (143a) Connecting the auxiliary part (143b), at least one of the auxiliary parts (143b) includes an elastic portion (1435f); or at least one of the auxiliary parts (143b) includes an elastic portion (1435); the auxiliary part includes a first auxiliary part (143b1) and a second auxiliary part (143b2), the connecting plate assembly includes a gap portion (1451) that prevents the first auxiliary part (143b1) and the second auxiliary part (143b2) from contacting each other.

Images