Three-phase copper bar and common mode inductor PCB lap joint structure in motor controller

Abstract

The utility model provides a lap joint structure of a three-phase copper bar and a common mode inductor PCB in a motor controller. The lap joint structure comprises a three-phase common mode inductor, a common mode inductor PCB and a three-phase laminated copper bar, the three-phase common-mode inductor is welded on the bottom surface of the common-mode inductor PCB, three three-phase common-mode inductor output copper columns and three three-phase common-mode inductor input copper columns are welded on the top surface of the common-mode inductor PCB, and the three three-phase common-mode inductor output copper columns and the three three-phase common-mode inductor input copper columns are arranged in parallel; the three-phase laminated copper bars comprise three independent copper bars which are arranged in an up-down laminated mode, every two adjacent independent copper bars are arranged in an insulated mode, and the three independent copper bars are in lap joint with the corresponding three-phase common mode inductor input copper columns respectively. The three independent copper bars are arranged in a laminated mode, the structure is simple and firmer than that of a single copper bar, and the lap joint mode can adapt to the situations that a vehicle-mounted power source is compact in structure and limited in installation space.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted inverters, in particular to a lap joint structure of three-phase copper bars and a common-mode inductor on a PCB in a motor controller. Background Art

[0002] In a vehicle-mounted inverter, such as an air compressor controller of a hydrogen fuel vehicle, three-phase alternating current is output. Before the three-phase alternating current is output from the power supply, it needs to pass through a common-mode inductor for filtering to suppress common-mode interference. At this time, a lap joint structure needs to be designed to connect the three-phase copper bars with the common-mode inductor.

[0003] In current vehicle-mounted power supplies, the structure is often compact, resulting in limited space for connecting the three-phase copper bars with the common-mode inductor. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a lap joint structure of three-phase copper bars and a common-mode inductor on a PCB in a motor controller, aiming to reduce the volume of the PCB lap joint structure and save the occupied space of the vehicle-mounted power supply.

[0005] To achieve the above purpose, the utility model proposes a lap joint structure of three-phase copper bars and a common-mode inductor on a PCB in a motor controller, including: a three-phase common-mode inductor, a common-mode inductor PCB, and a three-phase laminated copper bar.

[0006] The three-phase common-mode inductor is welded to the bottom surface of the common-mode inductor PCB. Three three-phase common-mode inductor output copper posts and three three-phase common-mode inductor input copper posts are welded to the top surface of the common-mode inductor PCB. The three three-phase common-mode inductor output copper posts and the three three-phase common-mode inductor input copper posts are arranged in parallel.

[0007] The three-phase laminated copper bar includes three independent copper bars arranged in an upper and lower laminated manner. Insulation is provided between adjacent two independent copper bars. The three independent copper bars are respectively lapped on the corresponding three-phase common-mode inductor input copper posts.

[0008] A further technical solution of the utility model is that the three three-phase common-mode inductor output copper posts are distributed in a stepped manner, and the height difference of the three three-phase common-mode inductor output copper posts is the same as the height difference of the three independent copper bars.

[0009] A further technical solution of the utility model is that each of the three independent copper bars is coated with an insulating layer.

[0010] A further technical solution of the utility model is that an insulating plate is provided between adjacent two independent copper bars.

[0011] A further technical solution of the present utility model is that threaded holes are provided on the output copper posts of each of the three-phase common-mode inductors, and each of the independent copper bars is fixedly connected to the corresponding output copper post of the three-phase common-mode inductor through a laminated copper bar.

[0012] The beneficial effects of the three-phase copper bar and common-mode inductor PCB overlapping structure in the motor controller of the present utility model are as follows:

[0013] The present utility model adopts three independent copper bars arranged in a laminated manner, which not only has a simple structure but also is more firm than a single copper bar. Adopting this overlapping method can adapt to the situation where the in-vehicle power supply structure is compact and the installation space is limited. Description of the Drawings

[0014] Figure 1 is the overall structural schematic diagram of the preferred embodiment of the three-phase copper bar and common-mode inductor PCB overlapping structure in the motor controller of the present utility model;

[0015] Figure 2 is the exploded structural schematic diagram of the preferred embodiment of the three-phase copper bar and common-mode inductor PCB overlapping structure in the motor controller of the present utility model;

[0016] Figure 3 is the top view of the preferred embodiment of the three-phase copper bar and common-mode inductor PCB overlapping structure in the motor controller of the present utility model;

[0017] Figure 4 is Figure 3 the cross-sectional view in the A-A direction in

[0018] Explanation of the Reference Numerals in the Drawings:

[0019] Three-phase laminated copper bar 1; Common-mode inductor PCB 2; Laminated copper bar fixing screw 3; Three-phase common-mode inductor output copper post 4; Three-phase common-mode inductor 5; Common-mode inductor input copper post 6; Insulating board 7.

[0020] In order to make the objectives, technical solutions, and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Specific Embodiments

[0021] It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0022] Please refer to Figures 1 to 4 , the present utility model provides a three-phase copper bar and common-mode inductor PCB 2 overlapping structure in a motor controller. The preferred embodiment of the present utility model includes: a three-phase common-mode inductor 5, a common-mode inductor PCB 2, and a three-phase laminated copper bar 1.

[0023] Among them, the three-phase common-mode inductor 5 is welded to the bottom surface of the common-mode inductor PCB 2. Three three-phase common-mode inductor output copper posts 4 and three three-phase common-mode inductor input copper posts 6 are welded to the top surface of the common-mode inductor PCB 2. The three three-phase common-mode inductor output copper posts 4 and the three three-phase common-mode inductor input copper posts 6 are arranged in parallel.

[0024] The three-phase laminated copper busbar 1 includes three independent copper busbars arranged in an upper and lower laminated manner. Insulation is provided between two adjacent independent copper busbars. The three independent copper busbars are respectively lapped on the corresponding three-phase common-mode inductor input copper posts 6.

[0025] In this embodiment, three independent copper busbars are arranged in a laminated manner, which is not only simple in structure, but also more firm in structure than a single copper busbar. Adopting this lapping method can adapt to the situation where the in-vehicle power supply has a compact structure and limited installation space.

[0026] The three three-phase common-mode inductor output copper posts 4 are distributed in a stepped manner, and the height difference of the three three-phase common-mode inductor output copper posts 4 is the same as the height difference of the three independent copper busbars.

[0027] In this embodiment, each of the three independent copper busbars is coated with an insulating layer.

[0028] In this embodiment, an insulating plate 7 is provided between two adjacent independent copper busbars.

[0029] In this embodiment, a threaded hole is provided on each of the three-phase common-mode inductor output copper posts 4, and each independent copper busbar is fixedly connected to the corresponding three-phase common-mode inductor output copper post 4 through the laminated copper busbar.

[0030] The structure and action principle of the lapping structure of the three-phase copper busbar and the common-mode inductor PCB 2 in the motor controller of the present utility model will be elaborated in detail below.

[0031] The three-phase alternating current obtained by the inverter through DC inversion is output through the three-phase laminated copper busbar 1. The three-phase laminated copper busbar 1 is formed by pressing three independent copper busbars. Each independent copper busbar is coated with an insulating layer on its own, and an insulating plate 7 is sandwiched between every two independent copper busbars. Through glue and then pressing, the three mutually independent copper busbars are bonded into a whole. One end of the three-phase laminated copper busbar 1 is lapped on the three-phase common-mode inductor input copper post 6. The three-phase common-mode inductor input copper post 6 is welded on the common-mode inductor PCB 2, and the three-phase common-mode inductor 5 is welded on the other side of the common-mode inductor PCB 2.

[0032] Three-phase alternating current enters the three-phase common-mode inductor 5 through the common-mode inductor PCB2, and after being filtered by the three-phase common-mode inductor 5, it returns to the common-mode inductor PCB2 for filtering, and then is introduced into the output copper column 4 of the three-phase common-mode inductor, and then is connected to the output copper column 4 of the three-phase common-mode inductor through a copper bar or a cable for output. The input copper column 6 of the three-phase common-mode inductor itself has threaded holes, and the three independent copper bars are fixed on the input copper column 6 of the three-phase common-mode inductor through the laminated copper bar fixing screws 3. The input copper columns 6 of the three-phase common-mode inductor are distributed in a stepped shape, and the height difference is the same as that of the three independent copper bars of the three-phase laminated copper bar 1, so as to ensure a flat lap joint.

[0033] The beneficial effect of the lap joint structure of the three-phase copper bar and the common-mode inductor PCB in the motor controller of the present invention is:

[0034] The present invention adopts three independent copper bars arranged in a laminated manner, which is not only simple in structure, but also more firm than a single copper bar. By adopting this lap joint method, it can adapt to the situation where the in-vehicle power supply structure is compact and the installation space is limited.

[0035] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structure or process transformation made by using the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A three-phase copper busbar and common mode inductor PCB overlap structure in a motor controller, characterized in that: include: Three-phase common mode inductor, common mode inductor PCB and three-phase laminated copper busbar; The three-phase common-mode inductor is welded on the bottom surface of the common-mode inductor PCB, and three three-phase common-mode inductor output copper pillars and three three-phase common-mode inductor input copper pillars are welded on the top surface of the common-mode inductor PCB, and the three three-phase common-mode inductor output copper pillars and the three three-phase common-mode inductor input copper pillars are arranged in parallel; The three-phase laminated copper bar comprises three independent copper bars which are laminated in an upper and lower layer, two adjacent independent copper bars are insulated from each other, and the three independent copper bars are respectively overlapped on the corresponding three-phase common mode inductor input copper columns.

2. The three-phase copper busbar and common mode inductor PCB overlap structure in the motor controller according to claim 1, characterized in that: The three three-phase common-mode inductor output copper columns are distributed in a stepped manner, and the height difference of the three three-phase common-mode inductor output copper columns is consistent with the height difference of the three independent copper bars.

3. The three-phase copper busbar and common mode inductor PCB overlap structure in the motor controller according to claim 1, characterized in that: Each of the three separate copper busbars is coated with an insulating layer.

4. The three-phase copper busbar and common mode inductor PCB overlap structure in the motor controller according to claim 1, characterized in that: An insulating plate is arranged between two adjacent independent copper bars.

5. The three-phase copper busbar and common mode inductor PCB overlap structure in the motor controller according to claim 1, characterized in that: A threaded hole is provided on each of the three-phase common-mode inductor output copper columns, and each of the independent copper bars is fixedly connected to the corresponding three-phase common-mode inductor output copper column via a laminated copper bar.

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