Motor control driving device and automobile

Abstract

The motor control driving device comprises a driving plate, a control plate, a shielding cover and a shielding plate, a low-voltage connector is welded to the lower surface of the left end portion of the control plate, and the driving plate avoids the low-voltage connector, is stacked below the control plate and is connected with the control plate. The shielding cover covers all Pins of the low-voltage connector and is connected to the upper surface of the left end portion of the control board, and the shielding board is located between the control board and the driving board, avoids the low-voltage connector and is connected with the control board. According to the utility model, the EMC problem of the laminated motor controller can be effectively solved by adding the shielding plate and the shielding cover, and the cost is reduced at the same time.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the motor controller field of new energy automobile, concretely relates to a motor control drive device and automobile. BACKGROUND

[0002] The motor control drive device is a part of the motor controller. At present, the motor controller is developing in the direction of integration and miniaturization, and more functional integration is pursued while higher power density is pursued. The motor controller is more and more compact, and more and more problems are brought, among which the EMC (electromagnetic compatibility) problem is particularly key, which affects whether a system can work normally.

[0003] CN116489927A discloses a high-integration inverter brick which adopts a three-phase shielding cover to prevent the interference of the AC end on the control part, but it does not consider the interference of the external low-voltage connector interface of the control board, and it cannot be used for a laminated motor controller (i.e. a motor controller in which the control board and the drive board are stacked to realize miniaturization), cannot achieve extreme miniaturization, and has high cost. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a motor control drive device and automobile to solve the EMC problem of the laminated motor controller and reduce the cost.

[0005] In the first aspect, the motor control drive device comprises a drive board, a control board, a shielding cover and a shielding plate. A low-voltage connector is welded to the lower surface of the left end of the control board. The drive board is stacked below the control board and connected to the control board, avoiding the low-voltage connector. The shielding cover covers all the pins of the low-voltage connector and is connected to the upper surface of the left end of the control board. The shielding plate is located between the control board and the drive board, avoiding the low-voltage connector and being connected to the control board.

[0006] Preferably, the lower edge of the shielding cover is provided with m connecting columns, and the left end of the control board is provided with m through holes corresponding to the positions of the connecting columns. The connecting columns are inserted into the through holes and welded to the control board, so that the shielding cover is welded to the upper surface of the left end of the control board. In this way, the welding pins (i.e. pins) of the low-voltage connector can be protected, and the external emission interference can be effectively prevented.

[0007] Preferably, the shielding plate is integrally formed by stamping, and n bosses are arranged on the shielding plate at intervals, and an installation hole is formed in each boss, and a nut is embedded in each installation hole; n connecting holes corresponding to the n installation holes are formed in the control plate, and n bolts pass through the n connecting holes and are screwed with the n nuts to fasten the shielding plate and the control plate; when the control plate is connected with the shielding plate, the bosses on the shielding plate are in contact with the lower surface of the control plate, and a gap is formed between the main body of the shielding plate and the control plate, so that the heat dissipation effect of the control plate is ensured; the fastening of the shielding plate and the control plate is ensured by the screwing of the n bolts and the n nuts, and the control plate is more convenient to disassemble during maintenance.

[0008] Preferably, the front side edge of the shielding plate is provided with a first flange bent upward, the rear side edge of the shielding plate is provided with a second flange bent upward, and the right end edge of the shielding plate is provided with a third flange bent upward; the first flange, the second flange and the third flange can provide protection and mounting platform for the control plate, and electromagnetic interference is more effectively prevented.

[0009] Preferably, the left end edge of the shielding plate is provided with a fourth flange bent upward; the fourth flange can provide protection and mounting platform for the control plate, and electromagnetic interference is more effectively prevented.

[0010] Preferably, the left end of the shielding plate has a sunken platform provided with a plurality of heat dissipation pits; the left end of the driving plate is correspondingly provided with a heat-conducting pad in contact with the outer surface of the heat dissipation pit, which is beneficial to heat dissipation of the driving plate.

[0011] Preferably, the shielding plate is formed in a recessed downward or protruded upward manner to form an avoiding structure capable of avoiding components on the control plate and components on the driving plate, so as to achieve extreme miniaturization.

[0012] Preferably, a female connector is welded to the lower surface of the right end of the control plate, an avoiding hole is formed in the right end of the shielding plate, and a male connector is welded to the upper surface of the right end of the driving plate; the female connector is inserted into the avoiding hole and connected with the male connector, so as to fasten the control plate and the driving plate; the insertion of the female connector into the avoiding hole and the connection of the female connector with the male connector provide a stable and reliable physical connection between the control plate and the driving plate, realize fastening connection and electrical connection between the control plate and the driving plate; the insertion of the female connector into the avoiding hole and the connection of the female connector with the male connector improve the space utilization rate without damaging the overall shielding effect of the shielding plate, and make the assembly and maintenance process simpler and more efficient.

[0013] Preferably, the value of m is 4, and the value of n is 6.

[0014] In a second aspect, the utility model provides an automobile including the above motor control driving device.

[0015] Compared with the prior art, the utility model has following effect:

[0016] (1) the high voltage circuit of the drive board often interferes with the low voltage control part on the control board, in order to control board and drive board to be stacked together to achieve the miniaturization of module, therefore increase the shield board between control board and drive board, shield board is used for isolation control board and drive board between high low voltage crosstalk, reduce the cost while guaranteeing the shielding effect.

[0017] (2) the low voltage interface (namely low voltage connector) of control board is responsible for receiving and transmitting external signal, it often will be interfered by external emission, serious can lead to system cannot work normally, therefore increase the shield cover here, the shield cover covers all the pin of low voltage connector, shield the outside interference in all directions.

[0018] (3) by increasing shield board and shield cover, effectively solve the EMC problem of laminated motor controller, and achieve miniaturization, and when external device can use non-shielded layer connector and wire harness, and further can reduce the system cost. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is structure schematic view of motor control drive device in the utility model embodiment.

[0020] Figure 2 It is explosion view of motor control drive device in the utility model embodiment.

[0021] Figure 3 It is structure schematic view of shield cover in the utility model embodiment.

[0022] Figure 4 It is position relation schematic view of shield board and drive board in the utility model embodiment.

[0023] Figure 5 It is schematic view of control board and drive board fastening connection (shield board is not shown) in the utility model embodiment. DETAILED DESCRIPTION

[0024] In order to be more detailedly understand the characteristics and technical content of the utility model embodiment, the realization of the utility model embodiment is described in detail below, the attached drawing is only for reference, and is not used to limit the utility model embodiment.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terms used herein are only for the purpose of describing the utility model embodiments, and are not intended to limit the utility model.

[0026] In the following description, references are made to “some embodiments,” which describe a subset of all possible embodiments. However, it is understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0027] It should also be noted that the terms "first, second, third, and fourth" used in the embodiments of this utility model are only used to distinguish similar objects and do not represent a specific ordering of objects.

[0028] like Figures 1 to 5 As shown, the motor control drive device in this embodiment of the present invention includes a drive board 1, a control board 2, a shielding cover 3, and a shielding plate 4. A low-voltage connector 21 is welded to the lower surface of the left end of the control board 2. The drive board 1 avoids the low-voltage connector 21 and is stacked below the control board 2 and connected to the control board 2. The shielding cover 3 covers all the pins of the low-voltage connector 21 and is connected to the upper surface of the left end of the control board 2. The shielding plate 4 is located between the control board 2 and the drive board 1, avoids the low-voltage connector 21, and is connected to the control board 2.

[0029] In some embodiments, the lower edge of the shielding cover 3 is provided with four (i.e., m=4) connecting posts 31 at intervals, and the left end of the control board 2 is provided with four through holes 23 at corresponding positions. The four connecting posts 31 are respectively inserted into the four through holes 23 and welded to the control board 2, so that the shielding cover 3 is welded to the upper surface of the left end of the control board 2. This can effectively prevent external emission interference while protecting the solder pins (i.e., pins) of the low-voltage connector 21.

[0030] In some embodiments, the shielding plate 4 is integrally stamped and formed. Six (n=6) bosses are spaced apart on the shielding plate 4, each boss having a mounting hole. A nut 5 is pre-embedded in each mounting hole (the nut and mounting hole are interference-fitted). The control plate 2 has six connecting holes 22 corresponding to the six mounting holes. Six bolts pass through the six connecting holes 22 and are screwed into the six nuts 5, thus securing the shielding plate 4 to the control plate 2. When the control plate 2 is connected to the shielding plate 4, the bosses on the shielding plate 4 contact the lower surface of the control plate 2, and there is a gap between the main body of the shielding plate 4 and the control plate 2, ensuring the heat dissipation effect of the control plate 2. The six bolts and six nuts screwing method ensures the firmness of the connection between the shielding plate 4 and the control plate 2, and also makes disassembly of the control plate 2 easier during maintenance.

[0031] In some embodiments, the shielding plate 4 is formed by a concave or convex shape to create a clearance structure that avoids components on the control plate 2 and components on the drive plate 1, thereby achieving extreme miniaturization of the motor control drive device.

[0032] In some embodiments, the front side edge of the shielding plate 4 is provided with a first flange 41 bent upward, the rear side edge of the shielding plate 4 is provided with a second flange 42 bent upward, the right end edge of the shielding plate 4 is provided with a third flange 43 bent upward, and the left end edge of the shielding plate 4 is provided with a fourth flange 44 bent upward. The first flange 41, the second flange 42, the third flange 43 and the fourth flange 44 can effectively prevent electromagnetic interference while providing protection and mounting platform for the control board.

[0033] In some embodiments, the left end of the shielding plate 4 has a sunken platform provided with a plurality of heat dissipation pits 45, and the left end of the driving plate 1 is correspondingly provided with a heat-conducting pad 11 in contact with the outer surface of the heat dissipation pit 45, which is beneficial to heat dissipation of the driving plate 1.

[0034] In some embodiments, the right end of the control board 2 is welded with a female connector 24, the right end of the shielding plate 4 is provided with an avoiding hole 46, the upper surface of the right end of the driving plate 1 is welded with a male connector 12, and the female connector 24 is inserted into the avoiding hole 46 and connected with the male connector 12, so that the control board 2 and the driving plate 1 are tightly connected. The design of the female connector 24 and the male connector 12 provides a stable and reliable physical connection between the control board 2 and the driving plate 1, realizes the tight connection and electrical connection between the control board 2 and the driving plate 1. The female connector 24 is inserted into the avoiding hole 46 and connected with the male connector 12, which improves the space utilization without damaging the overall shielding effect of the shielding plate 4, and makes the assembly and maintenance process simpler and more efficient.

[0035] In addition, the utility model also provides a kind of automobile, and the automobile includes above-mentioned motor control driving device.

[0036] The above is only a specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A motor control driving device, comprising a driving plate (1) and a control plate (2), a low-voltage connector (21) is welded on the lower surface of the left end of the control plate (2), the driving plate (1) is connected with the control plate (2) by being stacked below the control plate (2) and avoiding the low-voltage connector (21); characterized in that: The shielding cover (3) covers all the pins of the low-voltage connector (21) and is connected to the upper surface of the left end of the control board (2), and the shielding plate (4) is located between the control board (2) and the driving board (1), avoids the low-voltage connector (21) and is connected to the control board (2).

2. The motor control drive apparatus according to claim 1, characterized by: The lower edge of the shielding cover (3) is provided with m connecting columns (31), and the left end of the control board (2) is provided with m through holes (23) at the corresponding positions, the m connecting columns (31) are inserted into the m through holes (23) and welded to the control board (2), so that the shielding cover (3) is welded to the upper surface of the left end of the control board (2).

3. The motor control drive of claim 2, wherein: The shielding plate (4) is integrally punched and formed, the shielding plate (4) is provided with n bosses at intervals, one mounting hole is formed in each boss, and a nut (5) is pre-buried in each mounting hole; the control board (2) is provided with n connecting holes (22) corresponding to the n mounting holes at the corresponding positions, n bolts are respectively inserted through the n connecting holes (22) and are screwed with the n nuts (5), so that the shielding plate (4) is tightly connected with the control board (2).

4. The motor control drive of claim 3, wherein: The front side edge of the shielding plate (4) is provided with a first flange (41) bent upward, the rear side edge of the shielding plate (4) is provided with a second flange (42) bent upward, and the right end edge of the shielding plate (4) is provided with a third flange (43) bent upward.

5. The motor control drive of claim 4, wherein: The left end edge of the shielding plate (4) is provided with a fourth flange (44) bent upward.

6. The motor control drive of claim 3, wherein: The left end of the shielding plate (4) has a sunken platform, and a plurality of heat dissipation pits (45) are arranged on the sunken platform; the left end of the driving board (1) is correspondingly provided with a heat-conducting pad (11) in contact with the outer surface of the heat dissipation pit (45).

7. The motor control drive of claim 3, wherein: The shielding plate (4) is formed in a recessed or protruding manner to form an avoiding structure capable of avoiding the components on the control board (2) and the components on the driving board (1).

8. The motor control drive of any one of claims 1 to 7, wherein: The right end of the control board (2) is welded with a female connector (24), the right end of the shielding plate (4) is provided with an avoiding hole (46), the right end of the driving board (1) is welded with a male connector (12), the female connector (24) is inserted into the avoiding hole (46) and is connected with the male connector (12), so that the control board (2) is tightly connected with the driving board (1).

9. The motor control drive of any one of claims 3 to 7, wherein: The value of m is 4, and the value of n is 6.

10. An automobile characterized by comprising: The motor control driving device comprises the motor control driving device according to any one of claims 1 to 9. The motor control driving device comprises the motor control driving device according to any one of claims 1 to 9.

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