Connection plate assembly, connection plate assembly preparation method, and electric pump

Abstract

A connection plate assembly, which comprises: a body part and a conductive assembly, the body part and the conductive assembly being injection molded, the conductive assembly comprising a plurality of conductive parts, the connection plate assembly having a partition part, an outer wall of the partition part being recessed relative to the body part, and the partition part causing at least two of the conductive parts to not come in contact, wherein at least part of one of the conductive parts is located on one side of the partition part, and wherein at least part of the other conductive part is located on the other side of the partition part. The present application further discloses a connection plate assembly preparation method and an electric pump. The present application is characterized in improving the yield of the connection plate assembly.

Description

[0001] The present application claims priorities to following Chinese Patent Applications, both of which are incorporated herein by reference in there entireties: Chinese Patent Application No. 202310636387.9, titled "CONNECTION PLATE ASSEMBLY, CONNECTION PLATE ASSEMBLY PREPARATION METHOD, AND ELECTRIC PUMP", filed with the China National Intellectual Property Administration on May 31, 2023; and Chinese Patent Application No. 202311087926.4, titled "CONNECTION PLATE ASSEMBLY, CONNECTION PLATE ASSEMBLY PREPARATION METHOD, AND ELECTRIC PUMP", filed with the China National Intellectual Property Administration on August 25, 2023.FIELD

[0002] The present application relates to the field of vehicles, and in particular to components of a vehicle lubrication system and / or a vehicle cooling system.BACKGROUND

[0003] An electric pump mainly serves as a power supply for a vehicle lubrication system and / or a vehicle cooling system. The electric pump includes a connection plate assembly. The connection plate assembly includes several conductive parts, which are separately arranged. During injection molding, these conductive parts need to be fixed separately. Any deviation in the relative positions of the conductive parts can lead to a decrease in the yield rate of qualified products. In order to prevent such positional deviations, high process requirements are put forward for the process.SUMMARY

[0004] An object of the present application is to provide a connection plate assembly, which facilitates improving the yield of the connection plate assembly.

[0005] In order to achieve the above object, the following technical solutions are adopted in an embodiment of the present application.

[0006] A connection plate assembly includes a body part and a conductive assembly. The body part is formed with the conductive assembly by injection molding. The conductive assembly includes multiple conductive parts. The connection plate assembly has a partition part, which is recessed relative to an outer wall of the body part. The partition part is configured to avoid contact between at least two of the multiple conductive parts, with at least a portion of one of the at least two of the multiple conductive parts being located on one side of the partition part, and at least a portion of another one of the at least two of the multiple conductive part being located on the other side of the partition part.

[0007] In the above technical solution, the partition part is configured to avoid contact between at least two of the multiple conductive parts, with at least a portion of one of the at least two of the multiple conductive parts being located on one side of the partition part, and at least a portion of the another one of the at least two of the multiple conductive part being located on the other side of the partition part. Before the body part is formed with the conductive assembly by injection molding, the multiple conductive parts are of an integrated structure, which can be divided into multiple independent conductive parts at a position corresponding to the partition part. During injection molding, the conductive parts are less prone to offset relative to each other, which facilitates improving the yield of the connection plate assembly.

[0008] The following technical solution is further disclosed in an embodiment of the present application. A method for preparing a connection plate assembly includes the following steps: obtaining a conductive assembly board, which includes multiple conductive bodies and a connection part; preparing a body part, where injection molding is performed with the conductive assembly board as an insert; and dividing the connection part.

[0009] In the above technical solution, when the conductive assembly board including the conductive body and the connection part is obtained, and the conductive assembly board is used as an insert for injection molding, the relative positions of the conductive bodies are less prone to offset, which facilitates improving the yield of the connection plate assembly.

[0010] The following technical solution is further disclosed in an embodiment of the present application. An electric pump includes a stator assembly and a connection plate assembly, which are electrically connected to each other. The connection plate assembly includes a body part and a conductive assembly. The body part is formed with the conductive assembly by injection molding. The conductive assembly includes multiple conductive parts. The connection plate assembly has a partition part, which is recessed relative to an outer wall of the body part. The partition part is configured to avoid contact between at least two of the multiple conductive parts, with at least a portion of one of the at least two of the multiple conductive parts being located on one side of the partition part, and at least a portion of another one of the at least two of the multiple conductive parts being located on the other side of the partition part.

[0011] In the above technical solution, the partition part is configured to avoid contact between at least two of the conductive parts, with at least a portion of one of the at least two of the multiple conductive parts being located on one side of the partition part, and at least a portion of another one of the at least two of the multiple conductive parts being located on the other side of the partition part. Before the body part is formed with the conductive assembly by injection molding, the multiple conductive parts are of an integrated structure, which can be divided into multiple independent conductive parts at a position corresponding to the partition part. During injection molding, the relative positions of the conductive parts are less prone to offset, which facilitates improving the yield of the connection plate assembly.BRIEF DESCRIPTION OF THE DRAWINGS

[0012] FIG. 1 is a schematic view of an electric pump according to an embodiment of the present application; FIG. 2 is a schematic cross-sectional view of the electric pump shown in FIG1; FIG. 3 is a schematic structural view showing a stator assembly and a connection plate assembly being connected to each other; FIG. 4 is a schematic view of the connection plate assembly shown in FIG. 1 from a first perspective; FIG. 5 is a schematic view of the connection plate assembly from a second perspective; FIG. 6 is a schematic view of a body part from a first perspective; FIG. 7 is a schematic view of the body part from a second perspective; FIG. 8 is a schematic view of a conductive part; FIG. 9 is a schematic enlarged view of part A in FIG8; FIG. 10 is a schematic view of the conductive part; FIG. 11 is a schematic flow chart showing steps of a method for manufacturing a connection plate assembly.

[0013] Reference numerals are listed as follows: 1pump housing;11first housing;12second housing;2rotor assembly;21permanent magnet;22impeller assembly;3stator assembly;31stator core;32insulation frame;33winding;4pump shaft;5isolation part;6connection plate assembly;61body part;611partition part;6111first opening;6112second opening;612upper surface;613lower surface;614plug-in part;614aaccommodation cavity;615support part;616protrusion;617recessed part;62conductive assembly;621gap;63conductive part;631conductive body;631amain body part;6311first conductive body;6311afirst main body part;6311bfirst contact pin;6311cfirst lead;6312second conductive body;6312asecond main body part;6312bsecond contact pin;6312csecond lead;6313third conductive body;6313athird main body part;6313bthird contact pin;6313cthird lead;6314fourth conductive body;6314afourth main body part;6314bfourth contact pin;6314cwiring lead;6315fifth conductive body;6315afifth main body part;6315bfifth contact pin;632auxiliary part;6321first portion;6322second portion;10first chamber;20second chamber;620conductive assembly board;6320connection part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] The present application is further described below in conjunction with the accompanying drawings and specific embodiments.

[0015] In order to enable those skilled in the art to better understand the technical solutions of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. Obviously, the accompanying drawings described below are only some embodiments of the present application. Based on these accompanying drawings, those skilled in the art can obtain other accompanying drawings without creative work. The orientation terms such as upper and lower involved herein are defined with reference to the relative positions of the components shown in the accompanying drawings, only for the purpose of clearly and conveniently expressing the technical solutions. It should be understood the orientation terms used herein shall not limit the protection scope claimed in the present application.

[0016] Referring to FIG. 1 to FIG. 10, an electric pump includes a pump housing 1, a rotor assembly 2, a stator assembly 3, a pump shaft 4 and an isolation part 5. The pump housing includes a first housing 11 and a second housing 12, which are fixed relative to each other. The pump housing may define a pump inner chamber, which includes a first chamber 10 and a second chamber 20. The isolation part 5 isolates the first chamber 10 from the second chamber 20, so that the first chamber 10 is not in communication with the second chamber 20. The first chamber 10 is located on an inner side of the isolation part 5, and the second chamber 20 is located on an outer side of the isolation part 5. The rotor assembly 2 and at least a portion of the pump shaft 4 are located in the first chamber 10, the stator assembly 3 is located in the second chamber 20, and the rotor assembly 2 is sleeved on an outer periphery of the pump shaft 4. When the electric pump is in operation, a working medium can flow through the first chamber 10, while no working medium flows through the second chamber 20. The stator assembly 3 includes a stator core 31, an insulation frame 32 and windings 33. The insulation frame 32 covers at least a portion of a surface of the stator core 31, and the windings 33 are wound around the insulation frame 32. The rotor assembly 2 includes a permanent magnet 21 and an impeller assembly 22. When a fluid drive device is in operation, an excitation magnetic field generated by the stator assembly 3 is controlled by controlling a current passing through the windings 33 of the stator assembly 3, and the rotor assembly 2 rotates around the pump shaft 4 or together with the pump shaft 4 under the action of the excitation magnetic field.

[0017] Referring to FIG. 4 to FIG. 11, the electric pump further includes a connection plate assembly 6, which is electrically connected to the stator assembly 3. The connection plate assembly 6 includes a body part 61 and a conductive assembly 62. The body part 61 is at least formed with the conductive assembly 62 as an insert by injection molding, the body part 61 is an injection-molded part, and a portion of the body part 61 in contact with the conductive assembly 62 is not conductive, so as to facilitate preventing the current passing through the conductive assembly 62 from leaking out of the body part 61 during the operation of the electric pump. The connection plate assembly has a partition part 611, which is recessed relative to an outer wall of the body part 61. The partition part 611 is configured to avoid contact between at least two of conductive parts 63, with at least a portion of one of the at least two of the conductive parts 63 being located on one side of the partition part 611, and at least a portion of another one of the at least two of the conductive parts 63 being located on the other side of the partition part 611. Before the body part 61 is formed with the conductive assembly 62 by injection molding, the multiple conductive parts 63 are of an integrated structure, which can be divided into multiple independent conductive parts 63 at a position corresponding to the partition part 611. During injection molding, the conductive parts 63 are less prone to offset relative to each other, which facilitates improving the yield of the connection plate assembly.

[0018] The partition part 611 includes a gap 621, and the conductive assembly 62 includes the gap 621. The gap 621 is configured to avoid contact between the at least two of the conductive parts 63, with at least a portion of the one of the at least two of the conductive parts 63 being located on one side of the gap 621, and at least a portion of the another one of the at least two of the conductive parts 63 being located on the other side of the gap 621. Before the body part 61 is formed with the conductive assembly 62 by injection molding, the multiple conductive parts 63 are of an integrated structure, which can be divided into multiple independent conductive parts 63 at a position corresponding to the gap 621. During injection molding, the conductive parts 63 are less prone to offset relative to each other, which facilitates improving the yield of the connection plate assembly.

[0019] In this embodiment, referring to FIG. 2 to FIG. 3, the stator assembly 3 and the connection plate assembly 6 are arranged in an axial direction of the electric pump. Specifically, the stator assembly 3, relative to the body part 61, is closer to the impeller assembly 22. That is, in the axial direction of the electric pump, the stator assembly 3 is located between the body part 61 and the impeller assembly 22. Alternatively, in other embodiments, the body part 61 may be located between the stator assembly 3 and the impeller assembly 22. In this case, the positions of the corresponding conductive parts 63 may change accordingly.

[0020] Referring to FIG. 3, the electric pump includes a plug-in part 614. In this embodiment, the plug-in part 614 and the body part 61 are of an integrated structure. Specifically, the plug-in part 614 protrudes from an upper surface 612 of the body part 61. The plug-in part 614 has an accommodation cavity 614a, and a portion of the conductive part 63 is located in the accommodation cavity 614a. Further, at least a portion of a first lead 6311c, at least a portion of a second lead 6312c, at least a portion of a third lead 6313c, and at least a portion of a wiring lead 6314c are located in the accommodation cavity 614a. The plug-in part 614 is provided in such a way that an external power supply interface may be inserted into the accommodation cavity 614a and electrically connected to the conductive part 63.

[0021] Referring to FIG. 4 to FIG. 11, each of the conductive parts 63 includes a conductive body 631 and an auxiliary part 632. The conductive body 631 is fixedly connected to the auxiliary part 632, or the conductive body 631 and the auxiliary part 632 are of an integrated structure. At least a portion of the auxiliary part 632 extends from the conductive body 631 towards the partition part 611, or at least a portion of the auxiliary part 632 extends from the conductive body 631 towards the gap 621. The auxiliary part 632 may assist in fixing the conductive body 631, which is beneficial for the fixation of the conductive parts 63, so that the conductive parts 63 are less prone to offset relative to each other during injection molding, thereby improving the yield of the connection plate assembly.

[0022] The body part 61 includes an upper surface 612 and a lower surface 613. The conductive body 631 includes a main body part 631a, which is closer to the upper surface 612 than to the lower surface 613. The partition part 611 includes a recessed part 617, and the body part 61 includes the recessed part 617, which is in communication with the gap 621. As mentioned above, before the body part 61 is formed with the conductive assembly 62 by injection molding, the multiple conductive parts 63 are of an integrated structure. Specifically, the conductive bodies 631 are connected to one another through the connection parts 6320, to form the integral structure, and the recessed part 617 may serve as a marker for dividing the connection part 6320, which facilitates determining the position of the division, and thus facilitates improving the production efficiency of the connection plate assembly. The recessed part 617 runs through the upper surface 612 and the lower surface 613, or the recessed part 617 is recessed from the upper surface 612 towards the lower surface 613, in which case a force required for dividing is relatively small. In addition, the provision of the recessed part 617 may relatively reduce the weight of the connection plate assembly, thereby facilitating a reduction in the weight of the electric pump. At least a portion of the gap 621 is located in the recessed part 617. In this embodiment, the gap 621 is located in the recessed part 617.

[0023] In this embodiment, referring to FIG. 4 and FIG. 6 to FIG. 10 , the recessed part 617 has a first opening 6111 on the upper surface 612 and a second opening 6112 on the lower surface 613. The first opening 6111 has a perimeter less than that of the second opening 6112. The recessed part 617 has openings of different sizes on the upper surface 612 and the lower surface 613 respectively. Specifically, during the dividing of the connection part, the first opening 6111 is relatively small, and a force-bearing area of the connection part is small when the connection part is subjected to a force from the upper surface 612 towards the lower surface 613, making it easy to divide the connection part. In addition, the second opening 6112 is relatively large, and during the dividing of the connection part, a portion of a second portion 6322 of the auxiliary part 632 bends from the first opening 6111 in a direction away from the first opening 6111. The relatively large second opening 6112 ensures that two adjacent second portions 6322 do not come into contact with each other, thereby reducing a possibility of short circuit.

[0024] The auxiliary part 632 includes a first portion 6321 and a second portion 6322, which are connected to each other. The conductive body 631 includes a main body part 631a. The first portion 6321 extends from the main body part 631a towards the gap 621, or the first portion 6321 extends from the main body part 631a towards the partition part 611. The first portion 6321 is flush with the main body part 631a. Less material is used in injection molding the body part 61 and the conductive assembly 62. In addition, the conductive body 631 and the first portion 6321 are less prone to offset relative each other, which facilitates improving the yield of the connection plate assembly. A portion of the second portion 6322 extends from the first opening 6111 in a direction away from the first opening 6111. Specifically, the second portion 6322 is formed when the auxiliary part 632 is divided, and two adjacent second portions 6322 are not in contact with each other, thereby reducing a possibility of short circuit.

[0025] The connection plate assembly 6 further includes a support part 615. In this embodiment, the body part 61 and the support part 615 are of an integrated structure. In other embodiments, the body part 61 may be fixedly or limitedly connected to the support part 615. For example, when at least a portion of the connection plate assembly 6 and at least a portion of the stator assembly 3 are used as inserts for injection molding, the support part 615 may support the stator assembly 3.

[0026] Referring to FIGS. 4 to 5 and FIGS. 8 to 10, the conductive assembly 62 includes three conductive bodies 631. Each of the three conductive bodies 631 includes a lead. The leads of the three conductive bodies 631 serve as a U-phase lead end, a V-phase lead end and a W-phase lead end of an external interface respectively. In this embodiment, the lead ends of the three conductive bodies 631 are arranged side by side. Alternatively, the lead ends of the three conductive bodies 631 may be arranged in rows, and the specific arrangement positions may be adaptively designed based on the external power supply interface. Each of the conductive bodies 631 includes a contact pin (not shown), a main body part 631a and a lead (not shown). The main body part 631a is connected to the contact pin and the lead. Specifically, the conductive body 631 includes a first conductive body 6311, a second conductive body 6312 and a third conductive body 6313. The first conductive body 6311 includes a first main body part 6311a, a first contact pin 6311b and a first lead 6311c. The first main body part 6311a is connected to the first contact pin 6311b and the first lead 6311c. The second conductive body 6312 includes a second main body part 6312a, a second contact pin 6312b and a second lead 6312c. The second main body part 6312a is connected to the second contact pin 6312b and the second lead 6312c. The third conductive body 6313 includes a third main body part 6313a, a third contact pin 6313b and a third lead 6313c. The third main body part 6313a is connected to the third contact pin 6313b and the third lead 6313c.

[0027] The conductive body 631 includes a fourth conductive body 6314. The fourth conductive body 6314 includes a fourth main body part 6314a, a fourth contact pin 6314b and a ground lead 6314c. The fourth main body part 6314a is connected to the fourth contact pin 6314b and the ground lead 6314c. The fourth contact pin 6314b is perpendicular to a plane where the fourth main body part 6314a is located, and the ground lead 6314c is perpendicular to the plane where the fourth main body part 6314a is located. The fourth contact pin 6314b is in conductive contact with the stator core 31 of the stator assembly 3, and the ground lead 6314c serves as the ground lead 6314c of the external power supply interface, which facilitates leading out static electricity on the surface of the stator core 31, and further facilitates preventing the static electricity from affecting the performance of the electric pump. The fourth main body part 6314a is connected to the fourth contact pin 6314b.

[0028] The conductive body 631 includes a fifth conductive body 6315. The fifth conductive body 6315 includes a fifth main body part 6315a and a fifth contact pin 6315b. The fifth contact pin 6315b is perpendicular to a plane where the fifth main body part 6315a is located. The fifth contact pin 6315b is in contact with the U-phase end, the V-phase end and the W-phase end, respectively, which is helpful to assist in achieving the electrical connection between the stator assembly 3 and the connection plate assembly 6. The fifth main body part 6315a is connected to the fifth contact pin 6315b. Referring to FIGS. 4 to 10, the first lead 6311c, the second lead 6312c, the third lead 6313c and the ground lead 6314c extend in the same direction. At least a portion of the first lead 6311c, at least a portion of the second lead 6312c, at least a portion of the third lead 6313c and at least a portion of the ground lead 6314c are located in the accommodation cavity 614a. The first contact pin 6311b, the second contact pin 6312b, the third contact pin 6313b and the fourth contact pin 6314b extend in the same direction, and the first contact pin 6311b and the first lead 6311c extend in opposite directions. The first contact pin 6311b extends perpendicular to a plane where the first portion 6321 is located, which facilitates the electrical connection between the first contact pin 6311b and the stator assembly 3. The first lead 6311c extends perpendicular to the plane where the first portion 6321 is located, which facilitates the plugging of the first lead 6311c into the external power supply.

[0029] Referring to FIG. 4, the body part 61 has a protrusion 616, which protrudes from the upper surface 612 in a direction away from the conductive assembly 62. The protrusion 616 covers at least a portion of the conductive body 631, which facilitates relatively reducing the degree of influence that the conductive body 631 is subjected to from the external environment, thereby enhancing the electrical connection stability of the conductive part 63.

[0030] Referring to FIG. 11, FIG. 11 is a schematic flow chart showing steps of a method for manufacturing a connection plate assembly. The method for manufacturing the connection plate assembly 6 includes the following steps.

[0031] Obtaining a conductive assembly board 620 including multiple conductive bodies 631 and a connection part 6320.

[0032] Preparing a body part 61: performing injection molding with at least the conductive assembly board 620 as an insert. When the conductive assembly board 620 is used as an insert for injection molding, the conductive bodies 631 are less prone to offset relative to each other, which facilitates improving the yield of the connection plate assembly. In addition, the number of inserts is relatively small, and the injection molding process is relatively simple.

[0033] Dividing the connection part 6320. In this step, dividing one connection part 6320 results in a formation of two auxiliary parts 632, that is, one connection part 6320 is divided into two auxiliary parts 632. A gap 621 is formed after the connection part 6320 is divided. The gap 621 is configured to avoid contact between two adjacent auxiliary parts 632, with at least a portion of one of the auxiliary parts 632 being located on one side of the gap 621, and at least a portion of another one of the auxiliary parts 632 being located on the other side of the gap 621. Preparing the body part 61 may be carried out simultaneously with dividing the connection part 6320. Alternatively, the body part 61 is prepared firstly, and then the connection part 6320 is divided. Before injection molding, the conductive assembly board 6320 is used as an insert. At this time, the multiple conductive parts are of an integrated structure, which can be divided into multiple independent conductive parts at the position corresponding to a partition part 611 after the injection molding is completed. Alternatively, the connection part 6320 is divided firstly, and then the body part 61 is prepared. Before injection molding, the conductive assembly board 620 is positioned. After the positioning is completed, the multiple conductive parts are of an integrated structure at this time, which can be divided into multiple independent conductive parts at the position corresponding to the partition part 611, and then injection molding is performed.

[0034] When the conductive assembly board 620 is used as an insert for injection molding, a recessed part 617 is formed, that is, the recessed part 617 is in communication with the gap 621. Alternatively, in other embodiments, the recessed part 617 may be prepared in other ways. The recessed part 617 may be used as a marker for dividing the connection part, which facilitates determining the position where the division is to be performed, and further facilitates improving the production efficiency of the connection plate assembly.

[0035] The method for preparing the connection plate assembly 6 includes: bending the conductive body 631, where a portion of the conductive body 631 is bent in a first direction to form a contact pin, and a portion of the conductive body 631 is bent in a second direction to form a lead, with the first direction being opposite to the second direction.

[0036] The method for preparing the connection plate assembly 6 includes: preparing the conductive assembly board 620, where the conductive body 631 is fixed to the connection part 6320 by welding; or the conductive body 631 is integrally formed with the connection part 6320.

[0037] The method for preparing the connection plate assembly 6 further includes electroplating the conductive assembly board 620. The step of electroplating the conductive assembly board 620 includes plating an anti-oxidation layer, which facilitates improving the anti-oxidant ability of the conductive assembly board 620, thereby improving the service life of the connection plate assembly 6. The main component of the anti-oxidation layer is nickel. After plating the anti-oxidation layer, for example, when a current-resistant layer is further plated, the bonding force between the anti-oxidation layer and the current-resistant layer may be increased. The anti-oxidation layer has a thickness not greater than 3 microns. Specifically, the thickness of the anti-oxidation layer ranges from 1 micron to 3 microns. If the thickness of the anti-oxidation layer is too small, the anti-oxidation properties of the anti-oxidation layer may degrade. If the thickness of the anti-oxidation layer is too large, it easily leads to a material waste. The step of electroplating the conductive assembly board 620 further includes plating a current-resistant layer. The main component of the current-resistant layer is at least one of tin, silver and gold. These materials exhibit good electrical conductivity, which facilitates increasing the current-resistant ability of the conductive assembly 62. The current-resistant layer has a thickness ranging from 1 micron to 3 microns. If the thickness of the current-resistant layer is too small, the current-resistant properties of the current-resistant layer may degrade. If the thickness of the current-resistant layer is too large, it easily leads to a material waste.

[0038] It should be noted that the above embodiments are only used to illustrate the present application and are not intended to limit the technical solutions described in the present application. Although the present application has been described in detail in this specification with reference to the above embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may still be made by those skilled in the art to the technical solutions of the present application, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present application should be included in the scope of the claims of the present application.

Claims

1. A connection plate assembly, comprising a body part (61) and a conductive assembly (62), wherein the body part (61) is formed with the conductive assembly (62) by injection molding, the conductive assembly (62) comprises a plurality of conductive parts (63), and the connection plate assembly has a partition part (611), wherein the partition part (611) is recessed relative to an outer wall of the body part (61); and the partition part (611) is configured to avoid contact between at least two of the plurality of conductive parts (63), with at least a portion of one of the at least two of the plurality of conductive parts (63) being located on one side of the partition part (611), and at least a portion of another one of the at least two of the plurality of conductive parts (63) being located on the other side of the partition part (611).

2. The connection plate assembly according to claim 1, wherein the partition part (611) comprises a gap (621), and the conductive assembly (62) comprises the gap (621), and wherein the gap (621) is configured to avoid contact between the at least two of the plurality of conductive parts (63), with the at least a portion of the one of the at least two of the plurality of conductive parts (63) being located on one side of the gap (621), and the at least a portion of the another one of the at least two of the plurality of conductive parts (63) being located on the other side of the gap (621).

3. The connection plate assembly according to claim 2, wherein each of the plurality of conductive parts (63) comprises a conductive body (631) and an auxiliary part (632), the conductive body (631) is fixedly connected to or integrated with the auxiliary part (632), and at least a portion of the auxiliary part (632) extends from the conductive body (631) towards the partition part (611).

4. The connection plate assembly according to claim 2, wherein the body part (61) comprises an upper surface (612) and a lower surface (613), and the conductive body (631) comprises a main body part (631a), which is closer to the upper surface (612) than to the lower surface (613); the partition part (611) comprises a recessed part (617), the body part (61) comprises the recessed part (617), and the recessed part (617) is in communication with the gap (621); and wherein the recessed part (617) runs through the upper surface (612) and the lower surface (613); alternatively, the recessed part (617) is recessed from the upper surface (612) towards the lower surface (613).

5. The connection plate assembly according to claim 3, wherein the body part (61) comprises an upper surface (612) and a lower surface (613), and the conductive body (631) comprises a main body part (631a), which is closer to the upper surface (612) than to the lower surface (613); the partition part (611) comprises a recessed part (617), the body part (61) comprises the recessed part (617), and the recessed part (617) is in communication with the gap (621); and wherein the recessed part (617) runs through the upper surface (612) and the lower surface (613); alternatively, the recessed part (617) is recessed from the upper surface (612) towards the lower surface (613).

6. The connection plate assembly according to claim 4, wherein the recessed part (617) has a first opening (6111) on the upper surface (612) and a second opening (6112) on the lower surface (613), and the first opening (6111) has a perimeter less than that of the second opening (6112).

7. The connection plate assembly according to claim 5, wherein the recessed part (617) has a first opening (6111) on the upper surface (612) and a second opening (6112) on the lower surface (613), and the first opening (6111) has a perimeter less than that of the second opening (6112).

8. The connection plate assembly according to claim 4, wherein the body part (61) has a protrusion (616), which protrudes from the upper surface (612) in a direction away from the conductive assembly (62), and covers at least a portion of the conductive body (631).

9. The connection plate assembly according to claim 5, wherein the body part (61) has a protrusion (616), which protrudes from the upper surface (612) in a direction away from the conductive assembly (62), and the protrusion (616) covers at least a portion of the conductive body (631).

10. The connection plate assembly according to claim 3, wherein the auxiliary part (632) comprises a first portion (6321) and a second portion (6322), and the conductive body (631) comprises a main body part (631a); and wherein the first portion (6321) extends from the main body part (631a) towards the partition part (611), the first portion (6321) is flush with the main body part (631a), the first portion (6321) is connected to the second portion (6322), and the second portion (6322) is not in contact with another second portion (6322) which is adjacent to the second portion (6322).

11. A method for preparing a connection plate assembly, comprising: obtaining a conductive assembly board (620), which comprises conductive bodies (631) and a connection part (6320); preparing a body part (61), wherein injection molding is carried out with at least the conductive assembly board (620) as an insert; and dividing the connection part (6320).

12. The method for preparing the connection plate assembly according to claim 11, comprising: preparing the conductive assembly board (620), wherein the conductive body (631) is fixed to the connection part (6320) by welding; alternatively, the conductive body (631) is integrally formed with the connection part (6320).

13. The method for preparing the connection plate assembly according to claim 11, comprising: bending the conductive body (631), wherein a portion of the conductive body (631) is bent in a first direction to form a contact pin, and a portion of the conductive body (631) is bent in a second direction to form a lead, with the first direction being opposite to the second direction.

14. The method for preparing the connection plate assembly according to claim 12, comprising: bending the conductive body (631), wherein a portion of the conductive body (631) is bent in a first direction to form a contact pin, and a portion of the conductive body (631) is bent in a second direction to form a lead, with the first direction being opposite to the second direction.

15. An electric pump, comprising a stator assembly (3) and a connection plate assembly (6), wherein the stator assembly (3) is electrically connected to the connection plate assembly (6); the connection plate assembly comprises a body part (61) and a conductive assembly (62), and the body part (61) is formed with the conductive assembly (62) by injection molding; the conductive assembly (62) comprises a plurality of conductive parts (63), and the connection plate assembly has a partition part (611), wherein the partition part (611) is recessed relative to an outer wall of the body part (61); and the partition part (611) is configured to avoid contact between at least two of the plurality of conductive parts (63), with at least a portion of one of the at least two of the plurality of conductive parts (63) being located on one side of the partition part (611), and at least a portion of another of the at least two of the plurality of conductive part (63) being located on the other side of the partition part (611).

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