engagement formation
By hooking and engaging the flat braided copper wire section with the protruding shape of the stator coil lead wire, the difficulty of joining caused by differences in motor space specifications is solved, achieving the effect of simplified joining and shared power line busbar.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TOYOTA JIDOSHA KK
- Filing Date
- 2025-05-28
- Publication Date
- 2026-06-09
AI Technical Summary
Existing technologies make it difficult to combine the power line busbars and stator coils with a simple structure that can accommodate the spatial differences of various motors, resulting in difficulties in position adjustment.
The flat braided copper wire section is hooked and connected to the stator coil lead wire through multiple protruding parts, which increases the contact area and allows for position adjustment.
It simplifies the connection process while absorbing differences in motor space specifications, avoids power supply limitations, expands the contact area, and supports shared power line busbars between motors.
Smart Images
Figure CN224343052U_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to joint structures. Background Technology
[0002] The power line busbar that connects the inverter and the stator coil of the motor is formed into a special shape according to the type of motor. In order to be universal between motors, it needs to be configured to absorb the differences in spatial specifications between motors.
[0003] For example, Patent Document 1 discloses a power line busbar having a body and a core material, wherein the body is flexible and the core material extends along the direction connecting the two ends of the body.
[0004] [Existing Technical Documents]
[0005] [Patent Documents]
[0006] [Patent Document 1] Japanese Patent Application Publication No. 2021-009781
[0007] However, in the aforementioned Patent Document 1, when the busbar and the stator coil leads of the motor are joined by welding, it is difficult to adjust the position to accommodate the degree of spatial specification differences between the various motors. Therefore, a technology is desired that can join the power line busbar and the stator coil while accommodating the spatial specification differences between the various motors through a simple structure. Utility Model Content
[0008] This disclosure is made in view of the above description, and its object is to provide a connection structure for the power line busbar and stator coil that can absorb the spatial specification differences of various motors through a simple structure.
[0009] In order to solve the above problems and achieve the above objectives, the connection structure disclosed herein is a connection structure of a power line busbar connected to an inverter at one end and a stator lead of a stator coil. The power line busbar has a flat braided copper wire portion formed by flat braided copper wire at the other end. The stator lead has a connection end, and the connection end is formed with a plurality of protruding shapes that can hook onto the flat braided copper wire portion.
[0010] [Effects of the utility model]
[0011] According to this disclosure, it is possible to combine the power line busbar and stator coil while absorbing the spatial specification differences of each motor, and it is possible to expand the contact area of the flat braided copper wire portion and the lead wire, thus avoiding the limitation of power carrying capacity. Attached Figure Description
[0012] Figure 1This is a schematic diagram illustrating the connection structure of the power line busbar and stator coil according to one embodiment of the present disclosure.
[0013] Figure 2 This is an enlarged view of a portion of a flat braided copper wire section according to one embodiment of the present disclosure.
[0014] Figure 3 This is a top view showing the specific connection structure of the flat braided copper wire portion and the stator coil lead wire of one embodiment of the present disclosure.
[0015] Figure 4 This is a side view showing a specific connection structure of the flat braided copper wire portion and the lead wire of the stator coil according to one embodiment of the present disclosure.
[0016] Figure 5 This is an enlarged side view of a portion of the joint surface of the lead wire of the stator coil, which is joined to a flat braided copper wire portion according to one embodiment of the present disclosure.
[0017] Explanation of reference numerals in the attached figures
[0018] 1. Resin section
[0019] 2 Power line busbar
[0020] 3 Flat braided copper wire section
[0021] 4. Lead wires
[0022] 41. Protruding shape
[0023] 42 Joint end Detailed Implementation
[0024] The connection structure of the stator lead wires and power line busbars according to embodiments of the present disclosure will now be described with reference to the accompanying drawings. It should be noted that the structural elements in the following embodiments include structures that can be easily replaced by those skilled in the art or structures that are substantially the same. Furthermore, the figures referred to in the following description are merely schematic representations of shapes, sizes, and positional relationships to the extent that the content of the present disclosure can be understood. That is, the present disclosure is not limited to the shapes, sizes, and positional relationships illustrated in the figures.
[0025] [Connection structure of power line busbar and stator coil]
[0026] Figure 1 This is a schematic diagram illustrating the connection structure of the power line busbar and stator coil according to one embodiment of the present disclosure.
[0027] Figure 1The shown joint structure 100 includes a resin part 1, a power line busbar 2, a flat braided copper wire part 3, and a stator lead wire 4 of the stator coil described later.
[0028] The resin portion 1 is formed in a ring shape, for example, and is disposed at the axial end of the stator of the motor. It should be noted that... Figure 1 Only half of the annular resin section 1 is shown in the illustration. Additionally, examples of motors include, for instance, a three-phase induction motor.
[0029] Power line busbar 2 is used for electrically connecting the inverter and the stator coil of the motor. One end of power line busbar 2 is connected to the inverter, and the other end is connected to the stator coil. In addition, power line busbar 2 consists of three lines corresponding to the U phase, V phase, and W phase.
[0030] The power line busbar 2 has a flat braided copper wire portion 3 on the opposite end to the side (one end side) that is connected to the inverter. There are three of these flat braided copper wire portions 3 corresponding to the U phase, V phase and W phase, and they are embedded in the resin portion 1 respectively.
[0031] Figure 2 This is an enlarged view of a portion of the flat braided copper wire section 3. (See image below.) Figure 2 As shown, the flat braided copper wire section 3 is formed by braiding copper wire in a flat manner.
[0032] In addition, such as Figure 3 , Figure 4 as well as Figure 5 As shown, the stator coil lead 4 is joined to the flat braided copper wire section 3.
[0033] The lead wire 4 has a connecting end 42, which is formed with a plurality of protruding portions 41 capable of hooking onto the flat braided copper wire portion 3. The plurality of protruding portions 41 are formed in a return shape to hook onto the flat braided copper wire portion 3, and when in contact with the flat braided copper wire portion 3, they engage with the flat braided copper wire portion 3 by entering the mesh of the flat braided copper wire portion 3. That is, the lead wire 4 electrically connects the power line busbar 2 and the stator coil by hooking each of the plurality of protruding portions 41 onto the mesh of the flat braided copper wire portion 3 in a Velcro manner.
[0034] As mentioned above, conventional power line busbars are formed into specific shapes according to the type of motor. For example, even though conventional flexible busbars are flexible, it is difficult to adjust their position to accommodate the differences in the spatial specifications of each motor. In addition, even if conventional power line busbars are joined to the stator coil leads by welding or bolting, position adjustment is still limited.
[0035] On the other hand, according to the connection structure 100 between the power line busbar 2 and the stator coil, the power line busbar 2 is provided with a flat braided copper wire portion 3, and the lead wire 4 is fixed by hooking the multiple protruding parts 41 of the lead wire 4 onto the flat braided copper wire portion 3. Furthermore, according to the connection structure 100 between the power line busbar 2 and the stator coil, since the multiple protruding parts 41 of the lead wire 4 are hooked onto the joint surface of the flat braided copper wire portion 3 for fixing, the contact area between the flat braided copper wire portion 3 and the lead wire 4 can be increased. Thus, the power line busbar 2 and the stator coil can be connected with a simple structure while accommodating differences in the spatial specifications of various motors.
[0036] According to one embodiment described above, by hooking multiple protruding parts 41 in the stator coil lead wire 4 onto the flat braided copper wire part 3, position adjustment and fixation can be performed simultaneously.
[0037] In addition, according to one embodiment, since the connection is completed simply by hooking the plurality of protruding shaped portions 41 in the lead wire 4 onto the flat braided copper wire portion 3, the connection between the power line busbar 2 and the stator coil can be simplified.
[0038] In addition, according to one embodiment, since the multiple protruding parts 41 of the lead wire 4 are fixed by hooking them onto the joint surface of the flat braided copper wire part 3, the contact area between the flat braided copper wire part 3 and the lead wire 4 can be increased, thus avoiding the limitation of the current carrying capacity.
[0039] In addition, according to one embodiment, since the engagement position with the stator coil lead wire 4 can be adjusted at the engagement surface of the flat braided copper wire portion 3, even motors with different spatial specifications can share the same power line busbar 2.
[0040] Furthermore, according to one embodiment, even motors with different spatial specifications can share the power line busbar 2. Additionally, by sharing the power line busbar 2, the required spatial specifications can be determined in advance, thereby ensuring the mounting space can be secured ahead of time.
[0041] Those skilled in the art can readily derive further effects and variations. The invention is not limited to the specific details and representative embodiments shown and described above. Thus, various modifications can be made without departing from the spirit or scope of the overall inventive concept as defined by the appended claims and their equivalents.
[0042] The above description of several embodiments of this application is based on the accompanying drawings. However, these embodiments are exemplary. The present invention can be implemented in other ways with various modifications and improvements based on the knowledge of those skilled in the art, with the embodiments described in the disclosure section of this utility model as the main example.
Claims
1. A connection structure comprising a power line busbar connected at one end to an inverter and a stator lead of a stator coil, wherein, The power line busbar has a flat braided copper wire portion formed by flat braided copper wire at its other end. The stator lead has a joint end, which is formed with a plurality of protruding shapes that can hook onto the flat braided copper wire portion.