CN113942568A - EPS controller and motor integrated power set structure, assembling method and system - Google Patents

EPS controller and motor integrated power set structure, assembling method and system Download PDF

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Publication number
CN113942568A
CN113942568A CN202111416304.2A CN202111416304A CN113942568A CN 113942568 A CN113942568 A CN 113942568A CN 202111416304 A CN202111416304 A CN 202111416304A CN 113942568 A CN113942568 A CN 113942568A
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CN
China
Prior art keywords
motor
power
connector
board
mounting seat
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Pending
Application number
CN202111416304.2A
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Chinese (zh)
Inventor
陈鑫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Jingwei Hirain Tech Co Ltd
Original Assignee
Beijing Jingwei Hirain Tech Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Beijing Jingwei Hirain Tech Co Ltd filed Critical Beijing Jingwei Hirain Tech Co Ltd
Priority to CN202111416304.2A priority Critical patent/CN113942568A/en
Publication of CN113942568A publication Critical patent/CN113942568A/en
Priority to PCT/CN2022/133191 priority patent/WO2023093666A1/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B62D5/0403—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by constructional features, e.g. common housing for motor and gear box
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B62D5/0403—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by constructional features, e.g. common housing for motor and gear box
    • B62D5/0406—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by constructional features, e.g. common housing for motor and gear box including housing for electronic control unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
    • B62D5/046—Controlling the motor
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/02—Arrangements of circuit components or wiring on supporting structure
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Steering Mechanism (AREA)

Abstract

The invention discloses an EPS controller and motor integrated power pack structure, which comprises a motor, an EPS controller and a shell, wherein the motor is connected with the EPS controller through a power line; the EPS controller comprises a PCB electrically connected with a PIN female terminal of the motor and electronic components arranged on the PCB, the PCB is assembled on the mounting seat, and connectors are welded on the PCB; the mounting seat is fixed on the motor; the shell is arranged on the mounting base and covers the PCB; the connector extends out of the shell from the through hole of the shell, wherein the shell, the PCB and the mounting seat are positioned in the axial direction of the motor. The EPS controller and motor integrated power unit structure integrates the motor and the EPS controller, reduces the assembly space required by the assembly of the motor and the EPS controller, and can adapt to narrower installation space. The invention also provides an assembling method of the EPS controller and motor integrated power pack structure and an EPS system.

Description

EPS controller and motor integrated power set structure, assembling method and system
Technical Field
The invention relates to the technical field of automobile steering, in particular to an EPS controller and motor integrated power set structure, an assembling method of the EPS controller and motor integrated power set structure and an EPS system.
Background
An EPS (Electric Power Steering) system is designed on the basis of a conventional mechanical Steering system, and mainly comprises a torque/rotation angle sensor, a vehicle speed sensor, an electronic control unit, a speed reduction mechanism and the like. The EPS system not only improves the portability and high-speed stability of automobile steering operation, but also improves the active safety of the automobile, so the EPS system becomes a hotspot of automobile electronic technology development.
In the prior art, the controller and the motor of the EPS system are mutually separated, so that more assembly space can be occupied, and the EPS system cannot adapt to narrower installation space.
Therefore, how to solve the problem that the controller and the motor in the EPS system occupy a large assembly space when being separated from each other is a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of this, the present invention provides an EPS controller and motor integrated power pack structure, which integrates a motor and an EPS controller into a whole, reduces an assembly space required by the assembly of the motor and the EPS controller, and can adapt to a narrower installation space. The invention also provides an assembling method of the EPS controller and motor integrated power pack structure and an EPS system.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a EPS controller and motor integral type power pack structure, includes:
a motor;
the EPS controller comprises a PCB electrically connected with a PIN female terminal of the motor and electronic components arranged on the PCB, the PCB is assembled on the mounting seat, and connectors are welded on the PCB correspondingly; the mounting seat is fixed on the motor;
the shell is arranged on the mounting seat and covers the PCB; the connector extends out of the shell from the through hole of the shell; wherein the housing, the PCB, and the mount are located in an axial direction of the motor.
Optionally, in the integrated EPS controller and motor power unit structure, the integrated EPS controller and motor power unit structure further includes a support frame, the PCB includes a control board and a power board, and the control board, the power board and the mounting base are sequentially stacked; the control board and the power board are electrically connected with the connector, the lower surface of the control board is fixedly connected with the first end face of the supporting frame, and the upper surface of the power board is fixedly connected with the second end face of the supporting frame and is electrically connected with a PIN female terminal of the motor; the supporting frame, the power plate and the mounting seat are fixedly connected;
the end part of the control board and the end part of the power board are mutually connected and form a U shape;
the control board and the power board are of an integrated structure; the bending part at the joint of the control board and the power board is manufactured by a Semi-flex process; or the control board and the power board are mutually separated and are mutually connected through pins.
Optionally, in the integrated EPS controller and motor power pack structure, the connector includes a power connector, a signal connector and a TAS connector; the signal connector and the TAS connector are welded on the control board; the power connector is welded to the power board.
Optionally, in the above EPS controller and motor integrated power pack structure, the mounting seat is a mounting seat formed by casting.
Optionally, in the above EPS controller and motor integrated power pack structure, a gap is provided between the mounting seat and the lower surface of the power board, and the gap is filled with a heat-conducting glue.
Optionally, in the integrated EPS controller and motor power pack structure, a sealing ring is arranged between the mounting seat and the motor;
the motor is provided with a mounting groove, and the sealing ring is arranged in the mounting groove.
Optionally, the connector is provided with an annular connector U-shaped groove, and a first protruding portion is arranged at a position of the housing opposite to the annular connector U-shaped groove; and/or the mounting seat is provided with an annular mounting seat U-shaped groove, and a second bulge part is arranged at the position of the shell opposite to the annular mounting seat U-shaped groove.
The EPS controller and motor integrated power pack structure comprises a motor, an EPS controller and a shell, wherein the EPS controller comprises a PCB electrically connected with a PIN female terminal of the motor and an electronic component arranged on the PCB, the PCB is assembled on a mounting seat, and a connector is welded on the PCB correspondingly; the mounting seat is fixed on the motor; the shell is arranged on the mounting seat and covers the PCB; the connector extends out of the shell from the through hole of the shell; the assembling method comprises the following steps:
1) preparing the EPS controller, assembling the PCB provided with the electronic components on the mounting seat, and assembling the shell on the mounting seat;
2) mounting the mount to the motor such that the housing, the PCB, and the mount are located in an axial direction of the motor.
Optionally, the EPS controller and motor integrated power pack structure further includes a support frame, the PCB is mounted on the support frame, the support frame is fixed to the mounting seat, the PCB includes a control board and a power board, and the control board, the power board and the mounting seat are sequentially stacked; the control board and the power board are electrically connected with the connector, the lower surface of the control board is fixedly connected with the first end face of the supporting frame, and the upper surface of the power board is fixedly connected with the second end face of the supporting frame and is electrically connected with a PIN female terminal of the motor; the connectors comprise a power connector, a signal connector and a TAS connector; the signal connector and the TAS connector are welded on the control board; the power connector is welded on the power board; the connector is provided with a U-shaped groove for connecting the annular connector, and a first bulge part is arranged at the position of the shell opposite to the U-shaped groove for connecting the annular connector; the mounting seat is provided with an annular mounting seat U-shaped groove, a second protruding part is arranged at the position, opposite to the annular mounting seat U-shaped groove, of the shell, and in the assembling method, the step 1) comprises the following steps:
11) flattening the integrally connected U-shaped PCBs, welding part of electronic components of the control board on the upper surface of the control board through reflow soldering, welding part of electronic components of the power board on the lower surface of the power board, and then crimping the PIN female terminal of the motor to the upper surface of the power board; wherein, the bending part at the joint of the control board and the power board is manufactured by a Semi-flex process;
12) the flattened PCB is turned over for 180 degrees, the rest electronic components of the control panel are welded on the lower surface of the control panel through reflow soldering, the rest electronic components of the power panel are welded on the upper surface of the power panel, and the connector assembly is assembled on the control panel, so that the PIN needle of the signal connector assembly and the PIN needle of the TAS connector assembly penetrate through the control panel; then, welding the PIN needle of the signal connector and the PIN needle of the TAS connector on the lower surface of the control board through selective welding, and welding a PIN female terminal of the motor on the upper surface of the power board;
13) connecting the lower surface of the control board with the first end surface of the support frame through a fixing piece, then bending the PCB into a U shape, enabling a PIN needle of a power connector to penetrate through the power board, and connecting the upper surface of the power board with the second end surface of the support frame through the fixing piece; welding a PIN PIN of the power connector on the lower surface of the power board in a selective welding mode;
14) connecting the supporting frame, the power plate and the mounting seat by using a fixing piece, coating sealant in a U-shaped groove of the annular connector and a U-shaped groove of the annular mounting seat, and assembling the shell on the mounting seat;
alternatively, the step 1) comprises:
11) welding part of electronic components of the control board and the PIN PINs on the upper side of the PIN header on the upper surface of the control board in a reflow soldering mode, and welding the rest of electronic components of the control board on the lower surface of the control board in a reflow soldering mode; assembling a connector on a control board, enabling a PIN needle of a signal connector and a PIN needle of a TAS connector to penetrate through the control board, and welding the PIN needle of the signal connector and the PIN needle of the TAS connector on the lower surface of the control board in a selective welding mode; connecting the lower surface of the control plate with the first end face of the support frame through a fixing piece;
12) welding part of electronic components of the power board on the upper surface of the power board in a reflow soldering mode, and welding after crimping a PIN female terminal of the motor to the upper surface of the power board; welding the rest electronic components of the power board on the lower surface of the power board in a reflow soldering mode, then connecting the upper surface of the power board with the second end surface of the supporting frame through a fixing piece, enabling the lower PIN PINs of the PIN header to be located on the lower surface of the power board, enabling the PIN PINs of the power connector to penetrate through the power board, welding the lower PIN PINs of the PIN header on the lower surface of the power board, and welding the PIN PINs of the power connector on the lower surface of the power board in a selective soldering mode;
13) the supporting frame, the power board and the mounting seat are connected through the fixing piece, then sealant is coated in the U-shaped groove of the annular connector and the U-shaped groove of the annular mounting seat, and the shell is assembled on the mounting seat.
Optionally, in the assembling method, the step 2) includes:
21) assembling a sealing ring in an installation groove at the top of the motor;
22) assembling 2 positioning pins on the motor in an interference manner;
23) assembling the mounting seat on the assembled motor through 2 positioning pins;
24) and the mounting seat and the motor are connected and fastened by utilizing the fixing piece.
The EPS system comprises an EPS controller and a motor integrated power set structure, wherein the EPS controller and the motor integrated power set structure is any one of the technical schemes.
The EPS controller and motor integrated power unit structure integrates the motor and the EPS controller, reduces the assembly space required by the assembly of the motor and the EPS controller, and can adapt to narrower installation space.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an EPS controller and motor integrated power pack structure provided in an embodiment of the present invention;
fig. 2 is an exploded view of an EPS controller and motor integrated power pack structure provided in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a first PCB according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a second PCB according to an embodiment of the present invention.
Wherein, in fig. 1-4:
a housing 1; a connector 2; a PCB 3; a control board 31; a power board 32; a pin header 33; a support frame 4; a mounting base 5; a motor 6; a seal ring 7; a fixing member 8, a fixing member 9; a fixture 10.
Detailed Description
The embodiment of the invention discloses an EPS controller and motor integrated power pack structure, which integrates a motor and an EPS controller into a whole, reduces the assembly space required by the assembly of the motor and the EPS controller and can adapt to a narrower installation space. The embodiment of the invention also discloses an assembling method of the EPS controller and motor integrated power pack structure and an EPS system.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 4, an embodiment of the invention provides an EPS controller and motor integrated power pack structure, including a motor 6, an EPS controller and a housing 1; the EPS controller comprises a PCB3 electrically connected with a PIN female terminal of the motor 6 and electronic components arranged on the PCB3, the PCB3 is assembled on the mounting seat 5, and the PCB3 is welded with the connector 2 correspondingly; the mounting seat 5 is fixed on the motor 6; the shell 1 is arranged on the mounting base 5 and covers the PCB 3; the connector 2 extends out of the shell 1 from the through hole of the shell 1; the housing 1, PCB3 and mount 5 are located in the axial direction of the motor 6.
It will be appreciated that the housing 1 is housed outside the PCB3 and correspondingly the housing 1 is housed outside the EPS controller, so that the motor 6 and EPS controller are integrated.
The EPS controller and the motor integral type power pack structure that this embodiment provided, with motor 6 and EPS controller integrated as an organic whole, reduce both required assembly space of assembly, can adapt to comparatively narrow installation space.
In some embodiments of the present invention, the EPS controller and motor integrated power pack structure further includes a support frame 4. The PCB3 includes a control board 31 and a power board 32, the control board 31, the power board 32 and the mounting base 5 are stacked in sequence, that is, the control board 31, the power board 32 and the mounting base 5 are all in the axial direction of the motor 6 (it should be noted here that, particularly in a normal use state, the control board 31 is located at the uppermost layer, the power board 32 is located in the middle, the mounting base 5 is located below, and the mounting base 5 is located above the motor 6, the upper surface of the control board 31 is close to the connector 2 compared to the lower surface of the control board 31, the lower surface of the control board 31 is opposite to the upper surface of the power board 32, and the lower surface of the power board 32 is close to the mounting base 5 compared to the upper surface of the power board 32). The control board 31 and the power board 32 are electrically connected with the corresponding connector 2, and the lower surface of the control board 31 is fixedly connected with the first end surface of the support frame 4; the upper surface of the power board 32 is fixedly connected with the second end face of the support frame 4 and is electrically connected with the PIN female terminal of the motor 6.
In some embodiments of the present invention, as shown in fig. 3, the end of the control board 31 and the end of the power board 32 are connected to each other and formed in a "U" shape, and the control board 31 and the power board 32 are of a unitary structure, and the bent portion where the control board 31 and the power board 32 are connected is made by a Semi-flex (Semi-flexible) process.
In other embodiments of the present invention, as shown in fig. 4, the end of the control board 31 and the end of the power board 32 are connected to each other and formed in a "U" shape, the control board 31 and the power board 32 are separated from each other, and the control board 31 and the power board 32 are connected to each other by the pin header 33. As shown in fig. 3 and 4, the end of the control board 31 and the end of the power board 32 refer to respective portions of the "U" -shaped bottom control board 31 and the power board 32.
In the technical scheme provided by this embodiment, the PCB3 not only can realize an integrated "U" type structure by the Semi-flex technology, but also can connect the upper and lower PCB boards (i.e. the control board 31 and the power board 32) by the pin header 33, and both of these two design schemes enable the PCB and other structural members (such as the support frame 4 and the housing 1) of the EPS controller to be perfectly combined, so that the overall height of the EPS controller is small.
In a specific implementation, the supporting frame 4 has a frame-like structure that accommodates electronic components on the PCB3, that is, the frame-like structure accommodates electronic components on the lower surface of the control board 31 and electronic components on the upper surface of the power board 32.
In other embodiments of the present invention, the control board 31 and the power board 32 may also be supported by supporting pillars, so that a columnar structure for accommodating electronic components is formed between the control board 31 and the power board 32. In practical applications, any structure that can realize support and connection may be used as the connection structure between the control board 31 and the power board 32.
In addition, in some embodiments, the power board 32 and the control board 31 may be disposed opposite to each other in parallel with the axial direction of the motor 6, and at this time, the support frame 4 is directly connected to the mounting base 5, so that the support frame 4 and the PCB3 are fixed to the mounting base 5. In other embodiments, the electronic components on the power board 32 and the electronic components on the control board 31 may be integrated on a single PCB3, i.e., the power board 32 and the control board 31 are integrated on a single PCB.
Specifically, in the above EPS controller and motor integrated power pack structure, the connector 2 is used for being electrically connected to a corresponding portion of the PCB 3. In some embodiments of the present invention, the connector 2 includes a power connector, a signal connector, and a TAS connector (TAS: Torque Angle Sensor, TAS connector is a Torque Angle connector); the signal connector and the TAS connector are welded to the control board 31; the power supply connectors are soldered to the power board 32. In practical application, the number of the PIN PINs of the power connector, the signal connector and the TAS connector is determined according to practical requirements, for example, in a specific application, the number of the PIN PINs of the power connector is 2, the number of the PIN PINs of the signal connector is 3, and the number of the PIN PINs of the TAS connector is 12, which is not limited in this embodiment. The connector 2 can be prepared by insert injection molding, and the material can be PBT-GF30 (polybutylene terephthalate; PBT-GF30 is engineering plastic of PBT and 30% glass fiber).
The signal connector and the TAS connector may be connected to the control board 31 by other connection methods such as welding, riveting, etc., besides the soldering connection. The power connector and the power board 32 may be connected by other connection methods besides soldering, such as welding, riveting, etc., and the preferred connection method of the present invention is soldering.
The inside ventilated membrane structure that has in connector 2, if there is pressure differential in normal use, balance the inside and outside pressure differential of EPS controller and motor integral type power pack structure in the use through this ventilated membrane structure.
The shell 1 can also be prepared by injection molding, and the selected material is PBT-GF 30. The shell 1 is respectively sealed with the connector 2 and the mounting seat 5, so as to meet the requirement of a specific waterproof grade, such as IP6K 9K.
In the integrated power unit structure of the EPS controller and the motor, the mounting seat 5 is the mounting seat 5 formed by casting, so that the EPS controller and the motor 6 can be connected with each other, and the heat dissipation of a high-power device of the power board 32 in the PCB3 of the EPS controller is promoted. The material of the mounting seat 5 can be selected from ADC12 (ADC: Aluminum-Alloy Die Castings, Japan Aluminum Alloy brand, also known as No. 12 Aluminum material, Al-Si-Cu series Alloy, is a Die-casting Aluminum Alloy, is suitable for cylinder cover caps, sensor supports, covers, cylinder bodies and the like, and has the execution standard of JIS H5302 and 2000 Aluminum Alloy Die-casting), of course, the mounting seat 5 can also adopt the structure of other materials, and the embodiment is not limited. Further, in order to improve the heat dispersion of EPS controller and motor 6, be provided with the space between the lower surface of mount pad 5 and power board 32, this space department packing has the heat conduction glue, the heat that electronic components produced on the power board 32 passes through the heat conduction glue and transmits for mount pad 5, mount pad 5 turns to the structure through motor 6 and other and outwards transmits the heat, and meanwhile, motor 6's heat also turns to the structure through other and outwards transmits, in order to accelerate EPS controller and motor integral type power pack structure heat dissipation process.
The support frame 4 may be an injection moulded frame, alternatively the material PBT-GF 30. The support frame 4 serves as a skeletal structure for supporting and connecting the control board 31 and the power board 32 of the PCB3, and the structure of the support frame 4 is suitable for both PCB designs.
The motor 6 can be determined by comprehensively considering factors such as performance, cost and the like, for example, a permanent magnet synchronous three-phase motor can be adopted, the rated torque and the rated power of the motor can be determined according to the actual application requirements, and for example, in a specific implementation, a motor with the rated torque larger than 6Nm and the rated power larger than 800W can be adopted.
Optionally, in the integrated EPS controller and motor power unit structure, a sealing ring 7 is arranged between the mounting seat 5 and the motor 6; the motor 6 is provided with a mounting groove, and the sealing ring 7 is arranged in the mounting groove. The sealing ring 7 can be an O-shaped sealing ring.
The mounting base 5 can be fixed to the motor 6 through a fixing member 10, wherein the fixing member 10 between the mounting base 5 and the motor 6 can be selected according to actual requirements, for example, in some embodiments of the present invention, the fixing member 10 is an M5 bolt, the length of the bolt is 18mm, and the number of the bolts is determined according to actual requirements; the PCB3 is fixed to the supporting frame 4 by a fixing member 8, wherein the fixing member 8 between the PCB3 and the supporting frame 4 can be selected according to actual requirements, for example, in some embodiments of the present invention, the fixing member 8 is a M2.5 self-tapping screw, the length of the self-tapping screw is 8mm, and the number of the self-tapping screws is determined according to actual requirements; the supporting frame 4 is fixed to the mounting seat 5 by fasteners 9, wherein the fasteners 9 between the supporting frame 4 and the mounting seat 5 can be selected according to actual requirements, for example, in some embodiments of the present invention, the fasteners 9 are M3 self-tapping screws, and the length of the self-tapping screws is 10mm, and the number of the self-tapping screws is determined according to actual requirements.
In order to improve the tightness of the connection between the housing 1 and the mounting base 5 and the connector 2. The connector 2 is provided with an annular connector U-shaped groove, and a first bulge part is arranged at the position of the shell 1 opposite to the annular connector U-shaped groove; and/or the mounting seat 5 is arranged in an annular mounting seat U-shaped groove, and a second bulge part is arranged at the position of the shell 1 opposite to the annular mounting seat U-shaped groove. Before the shell 1 is assembled to the mounting seat 5, sealant is coated on the U-shaped groove of the annular connector and the U-shaped groove of the annular mounting seat, when the shell 1 is assembled to the mounting seat 5, the first protruding portion is in butt joint with the U-shaped groove of the annular connector, and the second protruding portion is in butt joint with the U-shaped groove of the annular mounting seat. It will be appreciated that the first projection matches the shape and size of the annular connector U-shaped channel and the second projection matches the shape and size of the annular mounting seat U-shaped channel. The U-shaped groove of the annular connector is positioned at the periphery of the connector and matched with the peripheral shape of the connector 2 and the through hole shape of the shell 1, and the U-shaped groove of the annular mounting seat is positioned at the edge of the mounting seat 5 and matched with the corresponding mounting part shape of the shell 1.
Because the first bulge scribbles sealed glue between annular connector U type groove, consequently, improved the leakproofness between shell and the connector, because scribble sealed glue between second bulge and annular mount pad U type groove, consequently, improved the leakproofness between shell 1 and mount pad 5. Therefore, the EPS controller and motor integrated power unit structure ensures the sealing performance through the sealing ring and the sealing glue.
The EPS controller and motor integrated power pack structure provided by the embodiment mainly realizes the functions of signal conditioning of a sensor, MCU minimum system, driving of a motor and the like. In addition, in order to meet the requirements of normal operation of a hardware system and reliability of the system, the EPS controller and motor integrated power pack structure further needs to include a basic power supply processing module, a communication module, a Failsafe module and the like.
In the EPS controller and motor integrated power pack structure, the PCB3 includes a control board 31 and a power board 32. The control board 31 includes: the system comprises a power supply processing module, an MCU (micro controller Unit) minimum system, a torque sensor power supply module, a torque sensor conditioning circuit module, a temperature sensor module and a CAN communication module; the power board 32 includes: the device comprises a motor driving module and a motor current sampling module. The functions of the above modules are described as follows:
the power supply processing module mainly has the function of providing stable and reliable voltage for the system. The power supply processing module reduces the battery voltage to the voltage required by the logic chip, the sensor, other electric devices and chips, such as 5V, 3.3V and the like. The power supply processing module also requires that interference signals on a power line can be filtered, and the transmission interference of the system to the outside through the power line is reduced.
The torque sensor power supply module is responsible for providing electric energy for the external torque sensor, meets the power supply requirement of the external torque sensor, and can not be damaged when a short circuit to a power supply and a short circuit to the ground occur. The main function of the torque sensor conditioning circuit module is to filter and transmit a torque signal to the MCU, which refers to the existing mature technology.
The MCU minimum system comprises an MCU in charge of an EPS control algorithm, and simultaneously comprises a clock, a reset circuit and the like required by the operation of the MCU.
The CAN communication module is mainly used for acquiring engine speed and vehicle speed signals in a whole vehicle with a CAN network, simultaneously realizing the functions of data calibration and program downloading, and simultaneously has the function of awakening an ECU (Electronic control unit), wherein the function refers to the prior mature technology.
The motor driving module is used for driving the motor 6 to work, the motor 6 can control positive and negative rotation according to requirements, and the current value of the motor 6 can be controlled, so that the motor driving module is realized by adopting a 3-phase bridge driving mode. The switching frequency of the control signal is determined according to actual requirements, and 6 power tubes of the 3-phase bridge can be controlled respectively. The motor current sampling module is used for detecting the working current of the motor and realizing the closed-loop control of the motor current so as to meet the requirement of output torque calculated by an algorithm, and the control technology refers to the existing mature technology.
The temperature sensor module is used for collecting the temperatures of a power device and a PCB (printed Circuit Board) in an electronic component, when the temperature exceeds a certain range, the program can limit the torque output of the EPS system, and when the temperature reaches the highest value which can be borne by the power device, the program can directly close the output of the system, and the technology refers to the prior mature technology.
The integral EPS controller and motor integral type power pack structural component that this embodiment provided when realizing electronic power assisted steering control function, fine saving space size. In a specific implementation, the structure can be connected with a steering gear through a claw at the bottom of the motor 6, and the whole height is small. In the two PCBs 3 provided in this embodiment, the solution in which the control board 31 and the power board 32 are connected into a whole can reduce the number of connectors (such as pin headers 33) connected between boards, so that the manufacturing process is simpler, and at the same time, the reliability and EMC (Electro Magnetic Compatibility, which refers to the comprehensive evaluation of the electromagnetic interference (EMI) and the anti-interference capability (EMS) of electronic products in terms of electromagnetic field, are one of the most important indexes of product quality.
The EPS controller and motor integrated power set structure provided by the embodiment has few components and low complexity, and not only simplifies the assembly, but also obviously reduces the manufacturing cost. Meanwhile, the mounting base 5 can be used for carrying out large-area heat dissipation on the high-heat electronic components on the power board 32, and the heat dissipation effect is better. Furthermore, the control board 31 and the power board 32 of the PCB3 are separated by the support frame 4, which can prevent heat on the power board 32 from being transferred to the control board 31, and greatly improve the stability of the controller system operating at high temperature. The integral design scheme of the EPS controller and motor integrated power pack structure is more compact, larger power driving can be realized in a smaller space, and the integral arrangement of the EPS is better facilitated.
The embodiment of the invention also provides an assembling method of the EPS controller and motor integrated power pack structure, wherein the EPS controller and motor integrated power pack structure comprises a motor 6, an EPS controller and a shell 1; the EPS controller comprises a PCB3 electrically connected with a PIN female terminal of the motor 6 and electronic components arranged on the PCB3, the PCB3 is assembled on the mounting seat 5, and the PCB3 is welded with the connector 2 correspondingly; the mounting seat 5 is fixed on the motor 6; the shell 1 is arranged on the mounting base 5 and covers the PCB 3; the connector 2 extends out of the shell 1 from the through hole of the shell 1; the assembling method comprises the following steps:
1) preparing an EPS controller, assembling the PCB3 provided with the electronic components on the mounting seat 5, and assembling the shell 1 on the mounting seat 5;
2) the mount 5 is mounted to the motor 6 such that the housing 1, the PCB3, and the mount 5 are located in the axial direction of the motor 6.
Specifically, the step 1) includes:
11) flattening the integrally connected U-shaped PCB3, welding part of electronic components of the control board 31 on the upper surface of the control board 31 in a reflow soldering mode, welding part of electronic components of the power board 32 on the lower surface of the power board 32, and then crimping the motor PIN female terminal to the upper surface of the power board 32 according to the feasibility of structural design and process; wherein the bent portion at the connection of the control board and the power board 32 is made by a Semi-flex process.
12) Turning the flattened PCB3 180 degrees, soldering the remaining electronic components of the control board 31 to the lower surface of the control board 31 by reflow soldering, soldering the remaining electronic components of the power board 32 to the upper surface of the power board 32, and mounting the connector to the control board (for example, mounting the connector to the control board 31 by 4M 2.5 tapping screws) such that the PIN of the signal connector and the PIN of the TAS connector pass through the control board; then, the PIN of the signal connector and the PIN of the TAS connector are soldered to the lower surface of the control board 31 by selective soldering, and the PIN female terminal of the motor is soldered to the upper surface of the power board 32.
13) Connecting the lower surface of the control board 31 and the first end surface of the support frame 4 by a fixing member (such as an M2.5 tapping screw), bending the PCB3 into a U shape, allowing the PIN of the power connector 2 to penetrate through the power board 32, and connecting the upper surface of the power board 32 and the second end surface of the support frame 4 by a fixing member (such as an M2.5 tapping screw); and then the PIN of the power connector 2 is welded to the lower surface of the power board 32 by a selective welding mode. It can be understood that the control board 31 is provided with an avoiding structure corresponding to the position, so as to provide an avoiding space for the PIN of the power connector, and the PIN of the power connector does not need to pass through the control board. For better avoidance, or for avoiding the control panel under the condition that the avoiding structure is smaller, the PIN of the power connector can adopt a bending structure. Based on this, when the PCB buckled into the U type, power connector's PIN needle passed power board 32, and follow-up PIN needle with power connector welds the lower surface at power board 32 through the mode of selecting to weld, realizes that power connector's PIN needle and power board 32 are connected.
14) The support frame 4, the power board 32 and the mounting base 5 are connected by fixing members (for example, M3 self-tapping screws), then sealant is coated in the U-shaped groove of the annular connector and the U-shaped groove of the annular mounting base, and the housing 1 is assembled on the mounting base 5.
Alternatively, step 1) comprises:
11) part of electronic components of the control board 31 and PIN PINs on the upper side of the PIN header 33 are welded on the upper surface of the control board 31 in a reflow soldering mode, and the rest part of electronic components of the control board 31 are welded on the lower surface of the control board 31 in a reflow soldering mode; assembling the connector on the control board, enabling the PIN of the signal connector and the PIN of the TAS connector to penetrate through the control board, and welding the PIN of the signal connector 2 and the PIN of the TAS connector 2 on the lower surface of the control board 31 in a selective welding mode; the lower surface of the control board 31 and the first end surface of the support frame 4 are connected by a fixing member (e.g., M2.5 tapping screw);
12) welding part of electronic components of the power board 32 on the upper surface of the power board 32 in a reflow soldering mode, and welding after the PIN female terminal of the motor is pressed on the upper surface of the power board 32; the remaining electronic components of the power board 32 are soldered to the lower surface of the power board 32 in a reflow soldering manner, then the upper surface of the power board 32 is connected to the second end surface of the supporting frame 4 through a fixing member, so that the PIN PINs on the lower side of the PIN bank are located on the lower surface of the power board 32, the PIN PINs of the power connector penetrate through the power board 32, the PIN PINs on the lower side of the PIN bank are soldered to the lower surface of the power board 32, and the PIN PINs of the power connector are soldered to the lower surface of the power board 32 in a selective soldering manner;
13) the support frame 4, the power board 32 and the mounting base 5 are connected by fixing members (for example, M3 self-tapping screws), then sealant is coated in the U-shaped groove of the annular connector and the U-shaped groove of the annular mounting base, and then the housing 1 is assembled to the mounting base 5.
The step 2) includes:
21) assembling the sealing ring 7 in the mounting groove at the top of the motor 6;
22) 2 positioning pins are assembled on the motor 6 in an interference manner;
23) assembling the mounting base 5 to the assembled motor 6 through 2 positioning pins;
24) the mounting seat 5 and the motor 6 are connected and fastened by using fixing pieces (such as 3 bolts of M5); wherein, 3 bolt holes of the mounting base 5 are designed into through holes, 3 bolt holes of the motor 6 are tapped, and the bottom of the M5 bolt is coated with anti-loosening glue for loosening prevention; a clearance fit is typically employed between the motor 6 and the mounting 5.
The embodiment of the invention also provides an EPS system, which comprises an EPS controller and motor integrated power pack structure, wherein the EPS controller and motor integrated power pack structure is the EPS controller and motor integrated power pack structure provided by the embodiment. Because above-mentioned EPS controller and motor integral type power pack structure have above beneficial effect, the EPS system including this EPS controller and motor integral type power pack structure has corresponding effect, and it need not be repeated here.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides a EPS controller and motor integral type power pack structure which characterized in that includes:
a motor;
the EPS controller comprises a PCB electrically connected with a PIN female terminal of the motor and electronic components arranged on the PCB, the PCB is assembled on the mounting seat, and connectors are welded on the PCB correspondingly; the mounting seat is fixed on the motor;
the shell is arranged on the mounting seat and covers the PCB; the connector extends out of the shell from the through hole of the shell;
wherein the housing, the PCB, and the mount are located in an axial direction of the motor.
2. The EPS controller and motor integrated power pack structure of claim 1, further comprising a support frame, wherein the PCB comprises a control board and a power board, and the control board, the power board and the mounting seat are sequentially stacked; the control board and the power board are electrically connected with the connector, the lower surface of the control board is fixedly connected with the first end face of the supporting frame, and the upper surface of the power board is fixedly connected with the second end face of the supporting frame and is electrically connected with a PIN female terminal of the motor; the supporting frame, the power plate and the mounting seat are fixedly connected;
the end part of the control board and the end part of the power board are mutually connected and form a U shape;
the control panel and the power panel are of an integrated structure, and the bent part at the joint of the control panel and the power panel is manufactured by a Semi-flex process; or the control board and the power board are mutually separated and are mutually connected through pins.
3. The EPS controller and motor integrated power pack structure of claim 2, wherein the connectors comprise a power connector, a signal connector and a TAS connector; the signal connector and the TAS connector are welded on the control board; the power connector is welded to the power board.
4. The EPS controller and motor integrated power pack structure of claim 2, wherein a gap is provided between the mounting base and the lower surface of the power plate, and the gap is filled with a heat-conducting glue.
5. The EPS controller and motor integrated power pack structure of claim 1, wherein a sealing ring is arranged between the mounting seat and the motor;
the motor is provided with a mounting groove, and the sealing ring is arranged in the mounting groove.
6. The EPS controller and motor integrated power pack structure of claim 1, wherein the connector is provided with an annular connector U-shaped groove, and a first protruding part is arranged at a position of the housing opposite to the annular connector U-shaped groove; and/or the mounting seat is provided with an annular mounting seat U-shaped groove, and a second bulge part is arranged at the position of the shell opposite to the annular mounting seat U-shaped groove.
7. The assembling method of the EPS controller and motor integrated power pack structure is characterized in that the EPS controller and motor integrated power pack structure comprises a motor, an EPS controller and a shell, wherein the EPS controller comprises a PCB electrically connected with a PIN female terminal of the motor and an electronic component arranged on the PCB, the PCB is assembled on a mounting seat, and a connector is correspondingly welded on the PCB; the mounting seat is fixed on the motor; the shell is arranged on the mounting seat and covers the PCB; the connector extends out of the shell from the through hole of the shell; the assembling method comprises the following steps:
1) preparing the EPS controller, assembling the PCB provided with the electronic components on the mounting seat, and assembling the shell on the mounting seat;
2) mounting the mount to the motor such that the housing, the PCB, and the mount are located in an axial direction of the motor.
8. The assembling method according to claim 7, wherein the EPS controller and motor integrated power pack structure further comprises a support frame, the PCB is mounted on the support frame, the support frame is fixed on the mounting seat, the PCB comprises a control board and a power board, and the control board, the power board and the mounting seat are sequentially arranged in a stacked manner; the control board and the power board are electrically connected with the connector, the lower surface of the control board is fixedly connected with the first end face of the supporting frame, and the upper surface of the power board is fixedly connected with the second end face of the supporting frame and is electrically connected with a PIN female terminal of the motor; the connectors comprise a power connector, a signal connector and a TAS connector; the signal connector and the TAS connector are welded on the control board; the power connector is welded on the power board; the connector is provided with an annular connector U-shaped groove, and a first bulge is arranged at the position of the shell, which is opposite to the annular connector U-shaped groove; the mount pad is provided with annular mount pad U type groove, the shell with the relative position in annular mount pad U type groove is provided with the second bellying, step 1) includes:
11) flattening the integrally connected U-shaped PCBs, welding part of electronic components of the control board on the upper surface of the control board through reflow soldering, welding part of electronic components of the power board on the lower surface of the power board, and then crimping the PIN female terminal of the motor to the upper surface of the power board; wherein, the bending part at the joint of the control board and the power board is manufactured by a Semi-flex process;
12) the flattened PCB is turned over for 180 degrees, the rest electronic components of the control panel are welded on the lower surface of the control panel through reflow soldering, the rest electronic components of the power panel are welded on the upper surface of the power panel, and the connector assembly is assembled on the control panel, so that the PIN needle of the signal connector assembly and the PIN needle of the TAS connector assembly penetrate through the control panel; then, welding the PIN needle of the signal connector and the PIN needle of the TAS connector on the lower surface of the control board through selective welding, and welding a PIN female terminal of the motor on the upper surface of the power board;
13) connecting the lower surface of the control board with the first end surface of the support frame through a fixing piece, then bending the PCB into a U shape, enabling a PIN needle of a power connector to penetrate through the power board, and connecting the upper surface of the power board with the second end surface of the support frame through the fixing piece; welding a PIN PIN of the power connector on the lower surface of the power board in a selective welding mode;
14) connecting the supporting frame, the power plate and the mounting seat by using a fixing piece, coating sealant in a U-shaped groove of the annular connector and a U-shaped groove of the annular mounting seat, and assembling the shell on the mounting seat;
alternatively, the step 1) comprises:
11) welding part of electronic components of the control board and the PIN PINs on the upper side of the PIN header on the upper surface of the control board in a reflow soldering mode, and welding the rest of electronic components of the control board on the lower surface of the control board in a reflow soldering mode; assembling a connector on a control board, enabling a PIN needle of a signal connector and a PIN needle of a TAS connector to penetrate through the control board, and welding the PIN needle of the signal connector and the PIN needle of the TAS connector on the lower surface of the control board in a selective welding mode; connecting the lower surface of the control plate with the first end face of the support frame through a fixing piece;
12) welding part of electronic components of the power board on the upper surface of the power board in a reflow soldering mode, and welding after crimping a PIN female terminal of the motor to the upper surface of the power board; welding the rest electronic components of the power board on the lower surface of the power board in a reflow soldering mode, then connecting the upper surface of the power board with the second end surface of the supporting frame through a fixing piece, enabling the lower PIN PINs of the PIN header to be located on the lower surface of the power board, enabling the PIN PINs of the power connector to penetrate through the power board, welding the lower PIN PINs of the PIN header on the lower surface of the power board, and welding the PIN PINs of the power connector on the lower surface of the power board in a selective soldering mode;
13) the supporting frame, the power board and the mounting seat are connected through the fixing piece, then sealant is coated in the U-shaped groove of the annular connector and the U-shaped groove of the annular mounting seat, and the shell is assembled on the mounting seat.
9. The assembly method according to claim 7, wherein the step 2) includes:
21) assembling a sealing ring in an installation groove at the top of the motor;
22) assembling 2 positioning pins on the motor in an interference manner;
23) assembling the mounting seat on the assembled motor through 2 positioning pins;
24) and the mounting seat and the motor are connected and fastened by utilizing the fixing piece.
10. An EPS system, characterized by comprising an EPS controller and motor integrated power pack structure, wherein the EPS controller and motor integrated power pack structure is the EPS controller and motor integrated power pack structure as claimed in any one of claims 1 to 6.
CN202111416304.2A 2021-11-25 2021-11-25 EPS controller and motor integrated power set structure, assembling method and system Pending CN113942568A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202111416304.2A CN113942568A (en) 2021-11-25 2021-11-25 EPS controller and motor integrated power set structure, assembling method and system
PCT/CN2022/133191 WO2023093666A1 (en) 2021-11-25 2022-11-21 Eps controller and motor integrated power unit structure, and assembly method and system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111416304.2A CN113942568A (en) 2021-11-25 2021-11-25 EPS controller and motor integrated power set structure, assembling method and system

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114889690A (en) * 2022-05-27 2022-08-12 上海集度汽车有限公司 Steer-by-wire system and vehicle
WO2023093666A1 (en) * 2021-11-25 2023-06-01 北京经纬恒润科技股份有限公司 Eps controller and motor integrated power unit structure, and assembly method and system
WO2024082678A1 (en) * 2022-10-20 2024-04-25 博世华域转向系统有限公司 Small-size dual-redundancy electric power steering motor controller structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023093666A1 (en) * 2021-11-25 2023-06-01 北京经纬恒润科技股份有限公司 Eps controller and motor integrated power unit structure, and assembly method and system
CN114889690A (en) * 2022-05-27 2022-08-12 上海集度汽车有限公司 Steer-by-wire system and vehicle
WO2024082678A1 (en) * 2022-10-20 2024-04-25 博世华域转向系统有限公司 Small-size dual-redundancy electric power steering motor controller structure

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