DC filtering module assembly and motor controller

Abstract

The utility model provides a DC filtering module assembly and a motor controller, which belong to the technical field of motor electric control and comprise a filtering module and a fuse module. The filtering module comprises a magnetic ring, a first positive copper bar and a first negative copper bar, an avoiding hole is formed in the middle of the magnetic ring, and the first positive copper bar and the first negative copper bar penetrate through the avoiding hole side by side and are mutually insulated. The fuse module is arranged on the upper end face of the magnetic ring and provided with a second positive pole copper bar and a second negative pole copper bar, and the second positive pole copper bar and the second negative pole copper bar are welded to the upper end face of the first positive pole copper bar and the upper end face of the first negative pole copper bar respectively. According to the DC filtering module assembly provided by the utility model, the filtering module is integrated with the fuse module, and the corresponding copper bars of the filtering module and the fuse module are connected in a welding manner to form a whole, so that the internal space of a motor controller can be fully utilized, the installation steps are simplified, and the assembly is simpler and more convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor and electric control, and more specifically, relates to a DC filter module component and a motor controller. Background Art

[0002] The motor controller is a key component of electric vehicles. The space of the motor controller itself is limited. When arranging the DC filter module and the fuse module, sufficient space must be considered. The existing DC filter module and the fuse module are connected by injection-molded copper busbars, which are overlapped and bolted. It is necessary to ensure sufficient electrical distance while leaving space for the fastening bolts. When the DC filter module and the fuse module are connected, the copper busbar overlap tolerance is difficult to control, and the limited space makes it difficult to tighten the bolts. Utility Model Content

[0003] The utility model aims to provide a DC filter module assembly, aiming to solve the problem that the overlap tolerance of copper bars is difficult to control and the bolt tightening is difficult due to space limitation.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: to provide a DC filter module component, including:

[0005] A filter module, the filter module comprising a magnetic ring, a first positive copper bar and a first negative copper bar, the middle of the magnetic ring is provided with an avoidance hole, the first positive copper bar and the first negative copper bar are arranged side by side through the avoidance hole and are insulated from each other, and the first positive copper bar and the first negative copper bar are respectively connected to the positive and negative input terminals of the same capacitor;

[0006] A fuse module is arranged on the upper end surface of the magnetic ring, and the fuse module has a second positive copper bar and a second negative copper bar, and the second positive copper bar and the second negative copper bar are respectively welded to the upper end surfaces of the first positive copper bar and the first negative copper bar.

[0007] In a possible implementation, the fuse module is fixed to the upper end surface of the magnetic ring along the length direction.

[0008] In a possible implementation, the fuse module has a positive terminal and a negative terminal at both ends in the length direction, the positive terminal is connected to the second positive copper busbar by bolts, the negative terminal is connected to an external copper busbar by bolts, and the external copper busbar is connected to the second negative copper busbar through an external electronic device.

[0009] In a possible implementation, a high-voltage power supply PIN is provided on the first positive copper busbar and the first negative copper busbar, respectively.

[0010] In a possible implementation, the two high-voltage power supply PINs are respectively located on the same side of the first positive copper busbar and the first negative copper busbar and are bent and extended upward.

[0011] In a possible implementation, a grounding copper busbar is provided at one end of the first positive copper busbar and the first negative copper busbar away from the connection capacitor.

[0012] In a possible implementation, the DC filter module component further includes:

[0013] A neutral point copper bar, wherein the neutral point copper bar passes through the avoidance hole, the neutral point copper bar is located on one side of the first positive copper bar and the first negative copper bar and is insulated from each other, and one end of the neutral point copper bar is connected to a contactor to form a partial boost circuit.

[0014] In a possible implementation, a voltage sampling PIN is provided on one side of the neutral point copper busbar connected to the contactor.

[0015] In a possible implementation, the two voltage sampling PIN needles are respectively arranged on both sides of the neutral point copper bar in the width direction and are bent and extended upward.

[0016] The beneficial effect of a DC filter module assembly provided by the utility model is that: compared with the prior art, the first positive copper bar and the first negative copper bar of the filter module are arranged side by side through the avoidance hole of the magnetic ring. The fuse module is installed on the upper end face of the magnetic ring, the second positive copper bar of the fuse module is welded to the upper end face of the first positive copper bar, and the second negative copper bar of the fuse module is welded to the upper end face of the first negative copper bar. The filter module is integrated with the fuse module, and the corresponding copper bars of the filter module and the fuse module are connected by welding to form an integral DC filter module assembly, avoiding the problem that the overlap tolerance is difficult to control and the space is limited to make bolt tightening difficult when the filter module and the fuse module are overlapped and bolted. The DC filter module assembly provided by the utility model can make full use of the internal space of the motor controller, and simplifies the installation steps, making assembly easier.

[0017] The utility model also provides a motor controller, comprising the DC filter module assembly.

[0018] The beneficial effect of a motor controller provided by the utility model is that: compared with the prior art, the motor controller uses the above-mentioned DC filter module assembly, and thus has the same beneficial effect as the DC filter module assembly. The filter module inside the motor controller integrates the fuse module, and the corresponding copper bars of the filter module and the fuse module are connected by welding to form an integral DC filter module assembly, thereby avoiding the problem that the overlap tolerance is difficult to control when the filter module and the fuse module are overlapped and bolted, and the problem that the space is limited and the bolts are difficult to tighten. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic structural diagram of a DC filter module assembly provided in an embodiment of the utility model.

[0021] Description of reference numerals:

[0022] 1. Magnetic ring; 2. First positive copper busbar; 3. First negative copper busbar; 4. Fuse module; 5. Second positive copper busbar; 6. Second negative copper busbar; 7. Positive terminal; 8. Negative terminal; 9. High-voltage power supply PIN; 10. Grounding copper busbar; 11. Neutral point copper busbar; 12. Voltage sampling PIN; 13. External copper busbar. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. is to distinguish different objects rather than to describe a specific order.

[0025] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", "high", "low", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the utility model.

[0026] See also Figure 1 Now, a DC filter module assembly provided by the utility model is described. A DC filter module assembly includes a filter module and a fuse module 4.

[0027] The filter module includes a magnetic ring 1, a first positive copper bar 2 and a first negative copper bar 3. The middle of the magnetic ring 1 is provided with an avoidance hole. The first positive copper bar 2 and the first negative copper bar 3 are arranged side by side through the avoidance hole and are insulated from each other. The first positive copper bar 2 and the first negative copper bar 3 are respectively connected to the positive and negative input terminals of the same capacitor. The fuse module 4 is arranged on the upper end surface of the magnetic ring 1. The fuse module 4 includes a second positive copper bar 5 and a second negative copper bar 6. The second positive copper bar 5 and the second negative copper bar 6 are respectively welded to the upper end surfaces of the first positive copper bar 2 and the first negative copper bar 3.

[0028] The utility model provides a DC filter module assembly. Compared with the prior art, the first positive copper bar 2 and the first negative copper bar 3 of the filter module are arranged side by side through the avoidance hole of the magnetic ring 1. The fuse module 4 is installed on the upper end surface of the magnetic ring 1, the second positive copper bar 5 of the fuse module 4 is welded to the upper end surface of the first positive copper bar 2, and the second negative copper bar 6 of the fuse module 4 is welded to the upper end surface of the first negative copper bar 3. The filter module integrates the fuse module 4, and the corresponding copper bars of the filter module and the fuse module 4 are connected by welding to form an integral DC filter module assembly, so as to avoid the problem that the overlap tolerance is difficult to control and the space is limited to make bolt tightening difficult when the filter module and the fuse module 4 are overlapped and bolted. The DC filter module assembly provided by the utility model can make full use of the internal space of the motor controller, and simplifies the installation steps, making assembly easier.

[0029] It is worth noting that the DC filter module, as one of the important components in the design of the SIC motor controller EMC, plays a noise reduction and filtering function, which directly affects the functional stability of the intelligent vehicle. The function of the fuse module 4 is to protect the current. The fuse module 4 is composed of a fuse and a fuse tube, and is connected in series in the circuit as a metal conductor. When the current exceeds a certain value, the fuse module 4 will generate heat to melt the fuse, thereby disconnecting the current and achieving a protective effect. In addition, the magnetic ring 1 in this application is a nanocrystalline magnetic ring 1.

[0030] See also Figure 1 The magnetic ring 1 is an oblong structure. When the magnetic ring 1 is fixed inside the controller, the axis direction of the avoidance hole is horizontal. The fuse module 4 is fixed to the upper end face of the magnetic ring 1 along the length direction. The length of the fuse module 4 is less than the distance in the length direction of the upper end face of the magnetic ring 1. The fuse module 4 is located in the middle area of ​​the upper end face of the magnetic ring 1, and both ends do not protrude from the two sides of the length direction of the magnetic ring 1, so that the assembly space can be reasonably used.

[0031] The two ends of the fuse module 4 in the longitudinal direction are defined as the positive terminal 7 and the negative terminal 8, respectively. The positive terminal 7 is connected to the second positive copper bar 5 by bolts. The second positive copper bar 5 extends to one side of the magnetic ring 1 and bends downward. The bent end of the second positive copper bar 5 has a welding plane, which is correspondingly welded to the upper end face of the first positive copper bar 2. The negative terminal 8 is connected to the external copper bar 13 by bolts. The external copper bar 13 extends outward and bends downward to be connected to an external electronic device (such as a resistor, not shown in the figure). One end of the second negative copper bar 6 is connected to the external electronic device, and the other end of the second negative copper bar 6 extends inward and passes under the second positive copper bar 5. The end of the second negative copper bar 6 is bent downward and provided with a welding plane, which is correspondingly welded to the upper end face of the first negative copper bar 3.

[0032] Specifically, the first positive copper bar 2 and the first negative copper bar 3 are respectively provided with high-voltage power supply PIN needles 9, and the high-voltage power supply PIN needles 9 are respectively located at one side of the first positive copper bar 2 and the first negative copper bar 3 connected to the capacitor.

[0033] In addition, the two high-voltage power supply PIN needles 9 are respectively located on the same side of the first positive copper bar 2 and the first negative copper bar 3 and are bent and extended upward. The width of the bending area between the high-voltage power supply PIN needle 9 and the first positive copper bar 2 or the first negative copper bar 3 is between the width of the above-mentioned copper bar and the width of the high-voltage power supply PIN needle 9, which can achieve a good transition effect.

[0034] A grounding copper bar 10 is provided at one end of the first positive copper bar 2 and the first negative copper bar 3 away from the connection capacitor. The grounding copper bar 10 includes a main body and at least one extension part, the extension part is integrally formed with the main body, and the extension part has a welding point at one end away from the main body.

[0035] See also Figure 1 The DC filter module assembly also includes a neutral point copper bus 11.

[0036] The neutral point copper bar 11 passes through the avoidance hole, and the neutral point copper bar 11 is located on one side of the first positive copper bar 2 and the first negative copper bar 3 and is insulated from each other, that is, relative to the first positive copper bar 2 and the first negative copper bar 3, the neutral point copper bar 11 is located on one side of the above two copper bars. For example, the first positive copper bar 2, the first negative copper bar 3 and the neutral point copper bar 11 are arranged in sequence. One end of the neutral point copper bar 11 is bent and extended outward, and is connected to the contactor to form a part of the boost circuit.

[0037] In addition, a voltage sampling PIN needle 12 is provided on the neutral point copper bar 11, and the voltage sampling PIN needle 12 is located on the side of the neutral point copper bar 11 connected to the contactor. There are two voltage sampling PIN needles 12, and the two voltage sampling PIN needles 12 are respectively located on both sides of the width direction of the neutral point copper bar 11. The voltage sampling PIN needle 12 bends and extends upward, and the width of the bending area between the voltage sampling PIN needle 12 and the neutral point copper bar 11 is between the width of the neutral point copper bar 11 and the width of the voltage sampling PIN needle 12, which can achieve a good transition effect.

[0038] The above two groups of high-voltage power supply PIN needles 9 and voltage sampling PIN needles 12 are directly connected to the PCB board through wave soldering for reading corresponding data parameters.

[0039] The DC filter module assembly provided by the utility model has components connected by welding and injection molding, and the DC filter module assembly is fixed to the box by bolts. The injection-molded copper bar part has a simple structure, which is more convenient for fastening the bolts.

[0040] Based on the same inventive concept, the utility model also provides a motor controller, which uses the above-mentioned DC filter module assembly, and thus has the same beneficial effects as the DC filter module assembly. The filter module inside the motor controller integrates the fuse module 4, and the corresponding copper bars of the filter module and the fuse module 4 are connected by welding to form an integral DC filter module assembly, thereby avoiding the problem that the overlap tolerance is difficult to control and the space is limited, resulting in difficulty in bolt tightening when the filter module and the fuse module 4 are overlapped and bolted.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A DC filter module assembly, characterized in that: include: A filter module, the filter module comprising a magnetic ring (1), a first positive copper bar (2) and a first negative copper bar (3), the middle of the magnetic ring (1) is provided with an escape hole, the first positive copper bar (2) and the first negative copper bar (3) are arranged side by side and penetrate the escape hole and are insulated from each other, the first positive copper bar (2) and the first negative copper bar (3) are respectively connected to the positive and negative input terminals of the same capacitor; A fuse module (4), the fuse module (4) being arranged on the upper end surface of the magnetic ring (1), the fuse module (4) comprising a second positive copper bar (5) and a second negative copper bar (6), the second positive copper bar (5) and the second negative copper bar (6) being respectively welded to the upper end surfaces of the first positive copper bar (2) and the first negative copper bar (3).

2. A DC filter module assembly as claimed in claim 1, characterized in that: The fuse module (4) is fixed to the upper end surface of the magnetic ring (1) along the length direction.

3. A DC filter module assembly as claimed in claim 2, characterized in that: The fuse module (4) has a positive terminal (7) and a negative terminal (8) at both ends in the length direction, respectively; the positive terminal (7) is connected to the second positive copper busbar (5) via bolts; the negative terminal (8) is connected to an external copper busbar (13) via bolts; and the external copper busbar (13) is connected to the second negative copper busbar (6) via an external electronic device.

4. A DC filter module assembly as claimed in claim 1, characterized in that: The first positive copper busbar (2) and the first negative copper busbar (3) are respectively provided with high-voltage power supply PIN needles (9).

5. A DC filter module assembly as claimed in claim 4, characterized in that: The two high-voltage power supply PIN needles (9) are respectively located on the same side of the first positive copper bar (2) and the first negative copper bar (3) and are bent and extended upward.

6. A DC filter module assembly as claimed in claim 1, characterized in that: A grounding copper busbar (10) is provided at one end of the first positive copper busbar (2) and the first negative copper busbar (3) away from the connection capacitor.

7. A DC filter module assembly according to any one of claims 1 to 6, characterized in that: The DC filter module components also include: A neutral point copper bar (11), the neutral point copper bar (11) passes through the avoidance hole, the neutral point copper bar (11) is located on one side of the first positive copper bar (2) and the first negative copper bar (3) and is insulated from each other, and one end of the neutral point copper bar (11) is connected to a contactor to form a partial boost circuit.

8. A DC filter module assembly as claimed in claim 7, characterized in that: A voltage sampling PIN needle (12) is provided on one side of the neutral point copper bar (11) connected to the contactor.

9. A DC filter module assembly as claimed in claim 8, characterized in that: The two voltage sampling PIN needles (12) are respectively arranged on both sides of the neutral point copper bar (11) in the width direction and are bent and extended upwards.

10. A motor controller, characterized in that: Comprising a DC filter module assembly as described in any one of claims 1-9.

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