A stator connection structure

Abstract

This utility model relates to the technical field of motor assembly, and in particular to a stator wiring structure in which the copper busbars are connected by multiple hot riveting welds to ensure stability. It includes a third layer of copper busbars, a second layer of copper busbars, a first layer of copper busbars, a stator frame, stator windings, a stator core, a first fixing rivet, and a second fixing rivet. The stator frame is injection molded onto the stator core. The stator windings are wound onto the stator frame via a winding machine. The first layer of copper busbars is installed at the top of the stator frame, the second layer of copper busbars is installed at the top of the second layer of copper busbars, and the third layer of copper busbars is installed at the top of the second layer of copper busbars. Each of the third, second, and first layer of copper busbars has three hooks, each set of hooks connecting to the stator windings. The hooks are welded to the stator windings. Multiple sets of first fixing rivets fix the first layer of copper busbars while isolating the second layer of copper busbars, and multiple sets of second fixing rivets fix the second layer of copper busbars while isolating the third layer of copper busbars.

Description

Technical Field

[0001] This utility model relates to the technical field of motor assembly, and in particular to a stator wiring structure. Background Technology

[0002] With increasingly stringent requirements for energy conservation and environmental protection, pumps, as key power sources, must also meet the standards of high efficiency and low energy consumption.

[0003] A water pump is a machine that transports or pressurizes liquids. It transfers the mechanical energy of a prime mover or other external energy to the liquid, increasing the liquid's energy. It is mainly used to transport liquids including water, oil, acid and alkali solutions, emulsions, suspensions, and liquid metals.

[0004] The brushless motor is a three-phase motor with nine slots and six poles. The wiring method uses a delta parallel connection with three parallel branches. The motor operates at 12V and has a power of 200W, making it a low-voltage motor. Low-voltage motors are characterized by a larger current. By using parallel branches, the current in each branch can be reduced to one-third of the original current. Thus, with the same winding wire diameter, the electrical and thermal loads are smaller, and the power consumption is lower.

[0005] However, when using the triangular parallel winding method, nine or eighteen wire ends are required for connection. These nine or eighteen wire ends can be connected by copper busbars. The copper busbars are formed into the connecting components by injection molding or press-fitting into the plastic parts. However, injection molding is costly, and the copper busbars need to be inserted into the injection molding machine during injection molding, thus increasing costs. At the same time, two press-fitting processes are required, making the process complex. This invention is to solve the above problems. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a stator wiring structure.

[0007] This utility model discloses a stator wiring structure, including a third layer of copper busbars, a second layer of copper busbars, a first layer of copper busbars, a stator frame, a stator winding, a stator core, a first fixing rivet, and a second fixing rivet. The stator frame is injection molded onto the stator core. The stator winding is wound onto the stator frame using a winding machine. The first layer of copper busbars is installed at the top of the stator frame, the second layer of copper busbars is installed at the top of the second layer of copper busbars, and the third layer of copper busbars is installed at the top of the second layer of copper busbars. Three hooks are respectively provided on the third layer of copper busbars, the second layer of copper busbars, and the first layer of copper busbars. Each set of hooks is connected to the stator winding, and the hooks are welded to the stator winding. Multiple sets of first fixing rivets... The rivet points fix the first layer of copper busbars while isolating the second layer. Multiple sets of second-level fixing rivets fix the second layer of copper busbars while isolating the third layer. The second layer of copper busbars is welded to multiple sets of first-level fixing rivets, and the third layer of copper busbars is welded to multiple sets of second-level fixing rivets. This invention features a horizontal copper busbar structure, which is assembled on the stator frame in three layers, eliminating the intermediate injection molding component. The three layers of copper busbars are directly connected to the stator frame as a single assembly using hot riveting. At the same time, isolation columns are set directly between the copper busbar layers to prevent short circuits between phases. The copper busbars are connected by multiple hot riveting welds to ensure stability.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention sets up a horizontal copper busbar structure, which is assembled on the stator frame in three layers, eliminating the middle injection molding component and directly connecting the three layers of copper busbars to the stator frame in one piece. It is fixed by hot riveting. At the same time, isolation columns are set directly between the copper busbar layers to prevent short circuits between phases. The copper busbars are connected by multiple hot riveting welds to ensure stability. Attached Figure Description

[0009] Figure 1 This is an exploded structural diagram of the present invention;

[0010] Figure 2 This is an enlarged structural diagram of the stator frame and the first fixing rivet point, etc.

[0011] Figure 3 This is an enlarged structural diagram of the stator winding and the second fixing rivet, among other structures.

[0012] The following labels are used in the attached diagram: 1. Third layer copper busbar; 2. Second layer copper busbar; 3. First layer copper busbar; 4. Stator frame; 5. Stator winding; 6. Stator core; 7. First fixing rivet point; 8. Second fixing rivet point. Detailed Implementation

[0013] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0014] Example

[0015] like Figures 1 to 3 As shown, a stator wiring structure of this utility model includes a third layer copper busbar 1, a second layer copper busbar 2, a first layer copper busbar 3, a stator frame 4, a stator winding 5, a stator core 6, a first fixing rivet point 7, and a second fixing rivet point 8. The stator frame 4 is injection molded onto the stator core 6. The stator winding 5 is wound onto the stator frame 4 via a winding machine. The first layer copper busbar 3 is installed at the top of the stator frame 4, the second layer copper busbar 2 is installed at the top of the second layer copper busbar 2, and the third layer copper busbar 1 is installed at the top of the second layer copper busbar 2. The third layer copper busbar 1, the second layer copper busbar 2, and the first layer copper busbar 3 are respectively provided with... Three hooks, each set of hooks is connected to the stator winding 5 respectively. The hooks are welded to the stator winding 5. Multiple sets of first fixing rivets 7 fix the first layer copper busbar 3 and isolate the second layer copper busbar 2 at the same time. Multiple sets of second fixing rivets 8 fix the second layer copper busbar 2 and isolate the third layer copper busbar 1 at the same time. The second layer copper busbar 2 is welded to multiple sets of first fixing rivets 7. The third layer copper busbar 1 is welded to multiple sets of second fixing rivets 8. When the third layer copper busbar 1, the second layer copper busbar 2 and the first layer copper busbar 3 are stacked, a resistance welding position is left. At the same time, the upper layer is fixedly connected by four fixing rivets.

[0016] In this embodiment, the present invention sets up a horizontal copper busbar structure, which is assembled on the stator frame in three layers, eliminating the middle injection molding component and directly connecting the three layers of copper busbars to the stator frame in one assembly. The assembly is fixed by hot riveting. At the same time, isolation columns are set directly between the copper busbar layers to prevent short circuits between phases. The copper busbars are connected by multiple hot riveting welds to ensure stability.

[0017] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A stator wiring structure, comprising a third layer of copper busbars (1), a second layer of copper busbars (2), a first layer of copper busbars (3), a stator frame (4), a stator winding (5), a stator core (6), a first fixing rivet (7), and a second fixing rivet (8), characterized in that, The stator frame (4) is injection molded onto the stator core (6). The stator winding (5) is wound onto the stator frame (4) via a winding camera. The first layer of copper busbar (3) is installed on the top of the stator frame (4). The second layer of copper busbar (2) is installed on the top of the second layer of copper busbar (2). The third layer of copper busbar (1) is installed on the top of the second layer of copper busbar (2). Three hooks are respectively provided on the third layer of copper busbar (1), the second layer of copper busbar (2) and the first layer of copper busbar (3). Each set of hooks is connected to the stator winding (5). The hooks are welded to the stator winding (5). Multiple sets of first-level fixing rivets (7) fix the first layer of copper busbar (3) while isolating the second layer of copper busbar (2). Multiple sets of second-level fixing rivets (8) fix the second layer of copper busbar (2) while isolating the third layer of copper busbar (1). The second layer of copper busbar (2) is welded to multiple sets of first-level fixing rivets (7). The third layer of copper busbar (1) is welded to multiple sets of second-level fixing rivets (8).

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