阅读说明：本技术 电机驱动控制结构 (Motor drive control structure ) 是由 孟永刚 孙玲 辛贤举 孙文 王军 陈浩 罗毅 张小乐 芦勇 于 2020-12-28 设计创作，主要内容包括：本发明公开了一种电机驱动控制结构,包括：沿电机驱动轴相反轴向布置的散热底座、第一～第三电子控制单元和盖部,散热底座被电机尾部端面和盖部夹持固定,第一～第三电子控制单元固定于散热底座和盖部形成的容置空间内；盖部端面上形成有电源连接器和信号连接器；第一电子控制单元用于对外部电源进行防反滤波处理,其形成第一冗余电源供给第二电子控制单元,其形成第二冗余电源供给第三电子控制单元；第二电子控制单元接收外部信号执行电机冗余控制、外部通讯和信号监测；第三电子控制单元用于执行电机驱动、保护和采集电机工作状态；散热底座用于对所述容置空间和第三电子单元散热。本发明组装时不需要考虑安装方向能避免电子控制单元安装混淆。(The invention discloses a motor drive control structure, comprising: the heat dissipation base is clamped and fixed by the end face of the tail part of the motor and the cover, and the first electronic control unit, the second electronic control unit, the third electronic control unit and the cover are fixed in an accommodating space formed by the heat dissipation base and the cover; a power connector and a signal connector are formed on the end surface of the cover part; the first electronic control unit is used for performing anti-reflection filtering processing on an external power supply, forming a first redundant power supply to be supplied to the second electronic control unit, and forming a second redundant power supply to be supplied to the third electronic control unit; the second electronic control unit receives an external signal to execute motor redundancy control, external communication and signal monitoring; the third electronic control unit is used for executing motor driving, protecting and collecting the working state of the motor; the heat dissipation base is used for dissipating heat of the accommodating space and the third electronic unit. The invention can avoid the mounting confusion of the electronic control unit without considering the mounting direction during assembly.)

1. A motor drive control structure characterized by comprising: the heat dissipation base is clamped and fixed by the end face of the tail part of the motor and the cover, and the first electronic control unit, the second electronic control unit, the third electronic control unit and the cover are fixed in an accommodating space formed by the heat dissipation base and the cover;

a cover part, wherein a power connector and a signal connector are formed on the end surface of the cover part;

the first electronic control unit is used for performing anti-reflection filtering processing on an external power supply, forms a first redundant power supply to the second electronic control unit, and forms a second redundant power supply to the third electronic control unit;

the second electronic control unit receives an external signal to execute motor redundancy control, external communication and signal monitoring;

the third electronic control unit is used for executing motor driving, protecting and collecting the working state of the motor;

and the heat dissipation base is used for dissipating heat of the accommodating space and the third electronic unit.

2. The motor drive control structure according to claim 1, characterized in that: both sides of the first electronic unit are formed into a completely symmetrical structure;

and/or both sides of the third electronic unit are formed in a completely symmetrical structure.

3. The motor drive control structure according to claim 1, characterized in that: the redundant power connector of the cover part is welded with the first electronic control unit, and the signal connector of the cover part penetrates through the first electronic control unit in a contactless mode and is welded to the second electronic control unit.

4. The motor drive control structure according to claim 1, characterized in that: signal connectors include, but are not limited to, sensor connectors, ignition signal connectors, and CAN communication connectors.

5. The motor drive control structure according to claim 1, characterized in that: the second electronic control unit is provided with a redundant MCU, a power supply processing circuit, a motor driving chip, a motor processing circuit, a sensor processing circuit, a CAN communication circuit and ECU cross monitoring signals.

6. The motor drive control structure according to claim 1, characterized in that: a fisheye terminal is welded on the second electronic control unit, and the other end of the fisheye terminal is connected with a third electronic control unit in an inserted mode;

or the third electronic control unit is welded with a fisheye terminal, and the other end of the fisheye terminal is connected with the second electronic control unit in an inserting mode.

7. The motor drive control structure according to claim 1, characterized in that: the second electronic control unit is formed with a guide hole at an edge position, and the assembly position and direction of the second electronic control unit are restricted by the guide hole.

8. The motor drive control structure according to claim 1, characterized in that: the third electronic control unit collects the motor operating conditions including but not limited to motor position sensor signals, motor temperature and motor current.

9. The motor drive control structure according to claim 1, characterized in that: the third electronic control unit is provided with two paths of motor position sensor chips which are arranged in the center of the third electronic control unit and are opposite to the motor magnetic head.

10. The motor drive control structure according to claim 1, characterized in that: and heat-conducting glue is formed between the heat dissipation base and the third electronic control unit.

11. The motor drive control structure according to claim 1, characterized in that: the heat dissipation base is formed into a disc structure, and at least one part of the side wall of the disc structure is exposed out of the cover part.

Technical Field

The invention relates to the field of automobiles, in particular to a motor drive control structure of an EPS (electric power steering) controller.

Background

With the rapid development of the automobile industry in the intelligent driving direction, the safety requirement on the EPS controller is higher and higher. The redundant design of an Electronic Control Unit (ECU) is one of the main technical solutions for improving the safety of an EPS controller, and the safety and the reliability of an EPS system are improved by adding a redundant electronic control unit. However, the redundant design scheme is equivalent to installing two sets of traditional non-redundant ECUs in the same structure, and a large number of structures and devices are added, so that the occupied area of the electronic control unit is greatly increased, the limitation of the installation space in the vehicle is limited, and the arrangement efficiency of the motor drive control structure needs to be improved and the size of the motor drive control structure needs to be reduced.

In the redundant design, two independent ECUs control the actuating mechanism at the same time and monitor each other, and the hardware structures of the two parts are almost completely the same. In addition, the redundancy design is to use two independent ECUs, and in order to effectively distinguish the ECUs and avoid confusion, special protection measures are usually required, for example, two ECUs are respectively given a unique identification code (ID) for production, assembly and tracking, and the existing redundancy design can increase the complexity of the production process and increase the production cost.

Disclosure of Invention

In this summary, a series of simplified form concepts are introduced that are simplifications of the prior art in this field, which will be described in further detail in the detailed description. This summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

The invention aims to solve the technical problem of providing a motor driving control structure which has a simple structure compared with the prior art, is convenient to produce, assemble and track, and can avoid the occurrence of ECU installation confusion.

To solve the above technical problem, the present invention provides a motor drive control structure, including: the heat dissipation base is clamped and fixed by the end face of the tail part of the motor and the cover, and the first electronic control unit, the second electronic control unit, the third electronic control unit and the cover are fixed in an accommodating space formed by the heat dissipation base and the cover;

a cover part, wherein a power connector and a signal connector are formed on the end surface of the cover part;

the first electronic control unit is used for performing anti-reflection filtering processing on an external power supply, a first redundant power supply is formed outside the first electronic control unit and is supplied to the second electronic control unit, and a second redundant power supply is formed outside the first electronic control unit and is supplied to the third electronic control unit;

the second electronic control unit receives an external signal to execute motor redundancy control, external communication and signal monitoring;

the third electronic control unit is used for executing motor driving, protecting and collecting the working state of the motor;

and the heat dissipation base is used for dissipating heat of the accommodating space and the third electronic unit.

Optionally, the motor driving control structure is further improved, and two sides of the first electronic unit are formed into a completely symmetrical structure;

and/or both sides of the third electronic unit are formed in a completely symmetrical structure.

Optionally, the motor driving control structure is further improved, that: the redundant power connector of the cover part is welded with the first electronic control unit, and the signal connector of the cover part penetrates through the first electronic control unit in a contactless mode and is welded to the second electronic control unit.

Optionally, the motor drive control structure is further modified, and the signal connector includes, but is not limited to, a sensor connector, an ignition signal connector and a CAN communication connector.

Optionally, the motor driving control structure is further improved to: the second electronic control unit is provided with a redundant MCU, a power supply processing circuit, a motor driving chip, a motor processing circuit, a sensor processing circuit, a CAN communication circuit and ECU cross monitoring signals.

Optionally, the motor drive control structure is further improved, a fisheye terminal is welded on the second electronic control unit, and the other end of the fisheye terminal is inserted into the third electronic control unit;

or the third electronic control unit is welded with a fisheye terminal, and the other end of the fisheye terminal is connected with the second electronic control unit in an inserting mode.

Optionally, the motor drive control structure is further improved, and a guide hole is formed at an edge position of the second electronic control unit, and the assembly position and direction of the second electronic control unit are limited by the guide hole.

Optionally, the motor driving control structure is further improved, and the third electronic control unit collects the motor working state including, but not limited to, a motor position sensor signal, a motor temperature and a motor current.

Optionally, the motor drive control structure is further improved, and the third electronic control unit has two motor position sensor chips, which are arranged in the center of the third electronic control unit and directly face the motor magnetic head.

Optionally, the motor driving control structure is further improved, and heat conducting glue is formed between the heat dissipation base and the third electronic control unit.

Optionally, the motor driving control structure is further improved, the heat dissipation base is formed into a disc structure, and at least a part of the side wall of the disc structure is exposed out of the cover portion.

The invention adopts the scheme that the heat dissipation base, the first to third electronic control units and the cover part are arranged along the opposite axial directions of the motor driving shaft, and different functions are respectively endowed to the first to third electronic control units, wherein the first and third electronic control units have completely symmetrical structures, the installation direction does not need to be considered, and the confusion is avoided. During assembly, the cover portion, the first electronic control unit and the second electronic control unit are welded to form a single body A, the motor, the heat dissipation base and the third electronic control unit are welded to form a single body B, and the single body A and the single body B are fastened together. The invention can avoid redundant ECU confusion through the structures of the first electronic unit, the second electronic unit, the third electronic unit and the fourth electronic unit, can meet the heat dissipation requirement when working at high current, and has simple structure and convenient production, assembly and tracking.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification. The drawings are not necessarily to scale, however, and may not be intended to accurately reflect the precise structural or performance characteristics of any given embodiment, and should not be construed as limiting or restricting the scope of values or properties encompassed by exemplary embodiments in accordance with the invention. The invention will be described in further detail with reference to the following detailed description and accompanying drawings:

fig. 1 is a schematic view of a first embodiment of the present invention.

Fig. 2 is an exploded view of the first embodiment of the present invention.

FIG. 3 is a schematic diagram of a first electronic control unit according to the present invention.

Fig. 4 is a schematic structural diagram of a second electronic control unit according to the present invention.

Fig. 5 is a schematic structural diagram of a third electronic control unit according to the present invention.

Fig. 6 is a schematic view of the fisheye terminal structure.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and technical effects of the present invention will be fully apparent to those skilled in the art from the disclosure in the specification. The invention is capable of other embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the general spirit of the invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. The following exemplary embodiments of the present invention may be embodied in many different forms and should not be construed as limited to the specific embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the technical solutions of these exemplary embodiments to those skilled in the art.

It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may be present. In contrast, when an element is referred to as being "directly connected" or "directly coupled" to another element, there are no intervening elements present. Like reference numerals refer to like elements throughout the drawings. Further, it will be understood that, although the terms first, second, etc. may be used herein to describe various elements, parameters, components, regions, layers and/or sections, these elements, parameters, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, parameter, component, region, layer or section from another element, parameter, component, region, layer or section. Thus, a first element, parameter, component, region, layer or section discussed below could be termed a second element, parameter, component, region, layer or section without departing from the teachings of exemplary embodiments according to the present invention.

A first embodiment;

as shown in fig. 1 and fig. 2, the present invention provides a motor driving control structure, including: the heat dissipation base is fixed on the end face of the tail part of the motor, and the first electronic control unit, the second electronic control unit, the third electronic control unit and the cover are fixed in an accommodating space formed by the heat dissipation base and the cover;

a cover part, wherein a power connector and a signal connector are formed on the end surface of the cover part;

the first electronic control unit is used for performing anti-reflection filtering processing on an external power supply, forming a first redundant power supply to be supplied to the second electronic control unit after the precaution processing, and forming a second redundant power supply to be supplied to the third electronic control unit;

the second electronic control unit receives an external signal to execute motor redundancy control, external communication and signal monitoring;

the third electronic control unit is used for executing motor driving, protecting and collecting the working state of the motor;

and the heat dissipation base is used for dissipating heat of the accommodating space and the third electronic unit.

A second embodiment;

as shown in fig. 2 in conjunction with fig. 3 to 5, the present invention provides a motor drive control structure, including: the heat dissipation base is fixed on the end face of the tail part of the motor, and the first electronic control unit, the second electronic control unit, the third electronic control unit and the cover are fixed in an accommodating space formed by the heat dissipation base and the cover;

a cover part, wherein a power connector and a signal connector are formed on the end surface of the cover part; the redundant power connector of the cover part is welded with the first electronic control unit, and the signal connector of the cover part penetrates through the first electronic control unit in a non-contact manner and is welded on the second electronic control unit;

the signal connectors of the cover include, but are not limited to, a sensor connector, an ignition signal connector, and a CAN communication connector. Wherein the redundant power connector pins of the cover portion are connected to the first electronic control unit pads, VBAT and GND pads in fig. 3. The ignition signal connector and the CAN communication connector penetrate through the first electronic control unit and are welded to corresponding welding pads of the second electronic control unit;

the first electronic control unit is used for performing anti-reflection filtering processing on an external power supply, forms a first redundant power supply to the second electronic control unit, and forms a second redundant power supply to the third electronic control unit;

the first electronic control unit is provided with power supply functional components such as two paths of power inductors, two paths of electrolytic capacitors and two paths of anti-reverse circuits which are controlled redundantly;

the second electronic control unit receives an external signal to execute motor redundancy control, external communication and signal monitoring; the system is formed with redundant MCU, power processing circuit, motor driving chip, motor processing circuit, sensor processing circuit, CAN communication circuit and ECU cross monitoring signal;

a guide hole is formed at the edge position of the second electronic control unit, and the assembling position and the assembling direction of the second electronic control unit are limited through the guide hole;

the third electronic control unit is used for executing motor driving, protecting and collecting the working state of the motor, and is provided with two paths of H-bridge circuits for driving the motor, two paths of motor phase line protection circuits, two paths of motor position collecting and processing circuits, two paths of temperature collecting and processing circuits and two paths of current collecting and processing circuits; the two motor position sensor chips are arranged in the center of the third electronic control unit and are opposite to the motor magnetic head;

and the heat dissipation base is used for dissipating heat of the accommodating space and the third electronic unit.

Wherein, both sides of the first electronic unit are formed into a completely symmetrical structure; and/or both sides of the third electronic unit are formed in a completely symmetrical structure.

Accordingly, whether the first electronic control unit, the second electronic control unit and the third electronic control unit in the first embodiment or the second embodiment are preferably configured to form a disc-like PCB adapted to the inner diameter of the cover portion, a through hole may be formed in each non-functional area of the PCB to reduce weight and increase heat dissipation.

A third embodiment;

the third embodiment is an improvement on the basis of the second embodiment, and the same parts as the second embodiment are not described again; as shown in fig. 6, a fisheye terminal is welded on the second electronic control unit, and a third electronic control unit is inserted at the other end of the fisheye terminal;

or the third electronic control unit is welded with a fisheye terminal, and the other end of the fisheye terminal is connected with the second electronic control unit in an inserting mode.

A fourth embodiment;

the third embodiment is an improvement on the basis of the second embodiment, and the same parts as the second embodiment are not described again; a heat conducting glue is formed between the heat dissipation base and the third electronic control unit; the heat dissipation base is formed into a disc structure, and at least one part of the side wall of the disc structure is exposed out of the cover part.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The present invention has been described in detail with reference to the specific embodiments and examples, but these are not intended to limit the present invention. Many variations and modifications may be made by one of ordinary skill in the art without departing from the principles of the present invention, which should also be considered as within the scope of the present invention.