WO2019127598A1

WO2019127598A1 - Vehicle power back door ecu controller and control method

Info

Publication number: WO2019127598A1
Application number: PCT/CN2017/120431
Authority: WO
Inventors: 何佩磊; 邹书洋
Original assignee: 苏州睿艾迪汽车科技有限公司
Priority date: 2017-12-25
Filing date: 2017-12-31
Publication date: 2019-07-04
Also published as: CN108045328B; DE212017000246U1; CN108045328A

Abstract

A vehicle power back door ECU controller and a control method. The controller comprises a housing (10) and an ECU (20) mounted in the housing (10). A control system of the ECU (20) comprises a central processing unit (1), a CAN signal transceiver unit (2), and a CAN bus (3) used for receiving vehicle information. The CAN signal transceiver unit (2) has one end electrically connected to the CAN bus (3) and the other end electrically connected to the central processing unit (1). The controller further comprises a strut control device, a door lock control device, an automatic-suction motor control device, a back door switch (6), a fault detection unit (7), a buzzer alarm (8), and a power supply unit (9). Current vehicle state information is determined by obtaining information from the vehicle CAN bus (3), and the back door is automatically controlled to open/close and lock according to the vehicle state; thus, opening/closing of the vehicle back door is safe and reliable, and more man-friendly and intelligent. In addition, the housing has a simple structure, and the ECU (20) can be mounted without tools and fixed without screws; thus, the mounting process is simple and easy to operate, the mounting efficiency is high, and the mounting costs are reduced.

Description

Vehicle electric back door ECU controller and control method

Technical field

The present invention relates to the field of vehicle ECU technology, and in particular, to a vehicle electric back door ECU controller and a control method.

Background technique

ECU (Electronic Control Unit) electronic control unit, also known as "driving computer", "on-board computer" and so on. It is widely used in the automotive field. The ECU consists of a housing and internal components, the internal components of which are mainly composed of a circuit board and a coil.

With the continuous popularization of family cars in China, consumers have put forward higher requirements for driving comfort, safety and ease of operation. The opening and closing of the back door of the car is traditionally operated by the driver and driver after unlocking. It is realized by pneumatic struts. In the existing domestic cars, pneumatic struts are generally used. Only the higher-standard cars use electric back doors, which are realized by electric struts, and because the car is in a position. As well as the load-bearing weight of the rear door of the car, the force required for the electric strut will be different.

Some vehicles are higher off the ground after the tailgate is opened. Female owners and some short-small male owners have some difficulties in switching the tailgates, and some vehicles have larger tailgate torques, which is quite difficult for less powerful owners. Due to the convenience of the electric tailgate, the atmosphere, and the wide range of the tailgate opening, it is very popular among car owners.

In the prior art, the general electric tailgate can only open and close the tailgate through the added tailgate switch, and can still open the tailgate when encountering the tailgate switch in non-stop or running, even some electric There is no anti-pinch function in the tailgate, which will bring some safety hazards. Even when some vehicles are in motion, the back door can still be opened, which may cause loss to consumers' personal property.

As the carrying case of the ECU controller, the ECU housing shoulders the functions of the engine controller circuit board protection, connection and fixing, and uniform heat dissipation.

The traditional ECU housing is divided into a cover and a lower cover. For example, the Chinese patent (authorization number: CN201621072900.8) name: the housing mentioned in the "ECU housing with sealing function", the PCBA board (the circuit of the welding component) is required for assembly. The board is installed in the lower cover. After closing the upper cover, it is fixed by the lock screw. When locking, ensure that the screw holes of the upper cover and the lower cover are tightly matched with the screw holes on the PCBA. Otherwise, the screws are easily misaligned and the PCBA board is damaged. . Moreover, the conventional ECU housing is complicated in assembly process, low in work efficiency, and requires screw fixing to increase product cost.

Summary of the invention

In view of the problems existing in the prior art, the present invention provides a vehicle electric back door ECU controller and a control method thereof, which can determine current vehicle state information by acquiring vehicle CAN bus information, and automatically control the back door switch and the lock according to the vehicle state. The vehicle tailgate switch is safe and reliable, more humanized and intelligent, convenient for users to use, improves user experience, and has good economic and social benefits; in addition, the shell structure of the carrying ECU is simplified, and the ECU assembly process does not require tools. It is simple, easy to operate, and has good sealing performance and low production cost, improving its practical performance and economic performance.

In order to solve the above technical problem, the present invention adopts a technical solution to provide a vehicle electric back door ECU controller, the controller including a housing and an ECU installed in the housing;

The housing includes a side wall and a rear cover that can open or close to the side wall, and the side wall and the rear cover constitute an accommodating space capable of accommodating an ECU, the side wall including a front side wall and an upper side a wall, a lower side wall, a left side wall and a right side wall, and the front side wall, the upper side wall, the lower side wall, the left side wall, the right side wall and the rear cover are integrally formed, the back cover and the back cover Hinged between the side walls, the interior of the housing and the left side wall and the right side wall each have a set extending from one end of the left side wall to the other end or from the right side wall a limiting strip extending from one end to the other end, and the position of the limiting strip of the left side wall and the right side wall is opposite, each set of limiting strips includes an upper limit strip and a lower limit strip, and the upper limit strip and Forming a limiting slot for accommodating the ECU between the lower limit strips, the rear end of the upper limit strip being shorter than the rear end of the lower strip, along the left side wall or the end The length direction of the rear side wall, the thickness of the upper limit strip gradually becomes larger, and the thickness of the upper limit strip near the end of the back cover is the smallest, and similarly, along the The length direction of the side wall or the rear side wall, the thickness of the lower limit strip gradually becomes larger, and the thickness of the lower limit strip near the end of the back cover is the smallest, and the ECU guides the upper and lower limit strips. Inserting along the limiting slot under the limit position to realize assembly of the ECU;

The upper surface of the upper side wall is provided with at least two posts, the rear cover is provided with a buckle corresponding to the post, and the inner side of the rear cover is provided with a ring of sealing strips, and the sealing strip is close to the bottom a section of the side wall extending toward the middle of the rear cover to form a limit stop, the end face shape of the limit stop matching the edge of the ECU, the seal strip and the limit stop The back cover is integrally formed, and the back cover is fastened by snapping the buckle of the back cover to the upper side wall, and the rear end of the side wall is clamped by the sealing strip. A sealing of the housing is achieved, and the fixing of the ECU is achieved by the limiting stopper against the ECU;

The ECU includes a control system including a central processing unit, a CAN signal transceiving unit having a signal transceiving function, and a CAN bus for receiving vehicle information, one end of the CAN signal unit being electrically connected to the CAN bus. And the other end is electrically connected to the central processing unit;

Also includes:

a strut control device, comprising: a strut motor control unit and a strut motor for controlling the back door lift, and a Hall sensor provided on the strut motor and having a data acquisition function, the support One end of the rod motor control unit is electrically connected to the central processing unit, and the other end is electrically connected to the strut motor; the Hall sensor is electrically connected to the central processing unit;

a door lock control device comprising a door lock electric control unit having an instruction issuing function and a door lock executing unit having an execution instruction function, one end of the door lock electric control unit being electrically connected to the central processing unit And the other end is electrically connected to the door lock execution unit;

a self-priming motor control device comprising a self-priming motor control unit and a self-priming motor for absorbing a door lock lock of the back door, one end of the self-priming motor control unit and the central processing The unit is electrically connected, and the other end is electrically connected to the self-priming motor;

a back door switch, the back door switch being electrically connected to the central processing unit;

a fault detecting unit having a function of detecting a line abnormality, wherein the fault detecting unit is electrically connected to the strut motor, the Hall sensor, the self-priming motor and the central processing unit at the same time;

a buzzer alarm, the buzzer alarm being electrically connected to the central processing unit;

A power supply unit is also included, the power supply unit being electrically coupled to the central processing unit.

Further, the power supply unit includes a solar panel on the back door, and further includes a power generation controller, a battery, and a rectifier, the solar panel being electrically connected to the power generation controller, the power generation controller and the The battery is electrically connected, the battery is electrically connected to the rectifier, and the rectifier is electrically connected to the central processing unit.

Further, the back door switch includes a first switch disposed in a cab of the automobile, a second switch disposed on a back door of the automobile or a car remote control key, and an inductive switch disposed at a bottom of the back door of the automobile, The first switch, the second switch, and the inductive switch are all electrically coupled to the central processing unit.

Further, the thickness of the sealing strip is 1.8-2.2 mm; the thickness of the thinnest portion of the upper limit strip is 1.8-2.2 mm, and the thickness at the thickest portion is 5-6.5 mm; The thinnest portion has a thickness of 3-4.5 mm and the thickest portion has a thickness of 5-6.5 mm.

Further, the power supply unit further includes an original vehicle power supply device that is electrically connected to the central processing unit.

The invention also provides a control method for the vehicle electric back door ECU controller, comprising a back door opening control method, comprising the following steps:

Step 1: When the back door is closed, the central processing unit receives the back door opening signal of the CAN bus from the vehicle and the vehicle state information through the CAN signal transceiver unit, and transmits the alarm signal to the buzzer alarm, and simultaneously transmits the command to the self-priming The motor control unit controls the self-priming motor to release the door lock, and then the door lock electric control unit accepts the command and controls the door lock executing unit to open the door lock;

Step 2: The central processing unit then transmits the command to the strut motor control unit, and the strut control unit controls the propeller motor to rotate and then drives the strut to open the back door.

Further, the method for controlling the back door closing includes the following steps:

S1. In the state where the back door is opened, the central processing unit receives the back door closing signal of the CAN bus from the vehicle and the vehicle state information through the CAN signal transceiver unit, and transmits the alarm signal to the buzzer alarm, and simultaneously transmits the command to the support. The rod motor control unit, the strut control unit controls the rotation of the strut motor to drive the strut to close the back door, and in the process of the back door descending, the door lock performs the unit action, and the back door realizes the semi-lock;

S2, then the central processing unit transmits the command to the self-priming motor control unit, and the self-priming motor control unit controls the self-priming motor to move and close the door lock to realize the full lock of the door lock.

Further, in steps 1 and S1, the accepted vehicle information includes a vehicle running state, and the vehicle running state includes a vehicle speed.

Further, S1 further includes: the Hall sensor collects the travel data of the strut that controls the lift of the back door, and transmits the data to the central processing unit.

Further, S1 further includes: a preset obstacle detection program in the central processing unit, the obstacle detection program includes an operating parameter of the strut motor, and in the process of closing the back door, if obstacles are encountered, the obstacle resistance The operating parameters of the strut motor will be changed and fed back to the central processing unit to control the stop or reverse of the strut motor.

Further, before the ECU control system performs the back door opening or closing operation, the fault detecting unit detects the state of the motor coil of the strut motor and the self-priming motor, and if any one of the motors has an abnormality, an alarm is issued and prohibited. The back door is opened or closed, and the state of the motor coil includes normal, open circuit, short circuit to power supply, and short circuit to ground;

Before the ECU control system performs the back door opening or closing action, the state of the Hall sensor is detected. If a short circuit to ground is abnormal, an alarm is issued and the back door is prohibited from being opened or closed.

The beneficial effects of the invention are:

1. The present invention includes a housing and an ECU mounted in the housing, wherein the control system of the ECU includes a central processing unit, a CAN signal transceiver unit and a CAN bus, a strut control device, a door lock control device, and a self-priming motor control device. The back door switch and the fault detecting unit receive the back door opening signal of the CAN bus from the vehicle and the vehicle state information through the CAN signal transceiving unit CAN signal transceiving unit, and automatically control the back door switch and the locking according to the vehicle state, thereby realizing the automobile The back door automatically opens, closes or stays in any middle position, making the tailgate switch safe and reliable, more user-friendly and intelligent, convenient for users to use, improving user experience and having good economic and social benefits;

2. In the housing of the present invention, the ECU is inserted into the limiting slot under the guiding and limiting action of the upper and lower limit strips to realize the assembly of the ECU, and the card is clamped on the upper side wall by the buckle of the back cover. The fastening of the cover is achieved by sealing the sealing strip to the rear end of the side wall, and the fixing of the ECU is achieved by the limiting stopper against the ECU; the structure of the housing of the invention is simplified, and the assembly process of the ECU is not It is necessary to use the tool, and only need to fasten the buckle of the back cover to the post of the upper side wall, and does not need to be fixed by screws, which is simple and easy to operate, has high assembly efficiency and saves assembly cost;

3. The control system of the present invention comprises a door lock control device and a self-priming motor control device, and realizes a half-lock state of the back door through the door lock control device, and realizes the full door lock of the back door under the action of the self-priming motor control device. The lock ensures that the door lock of the back door is completely locked, avoiding too many items in the trunk, and automatically bounces off during the bumping process of the vehicle, and the item is lost or injured by passing vehicles or pedestrians, thereby improving safety;

4. The strut control device of the present invention comprises a Hall sensor provided on the strut motor and having a data acquisition function, and the obstacle detecting program is preset in the central processing unit, and if the back door is closed, if encountered Obstacle, obstacle resistance will change the operating parameters of the strut motor, and feedback to the central processing unit, thereby controlling the strut motor to stop or reverse, with anti-clamp function, in the process of opening or closing, if obstacles are encountered Or resistance, it will automatically stop, reverse action, with substantial characteristics and progress;

5. The invention detects the state of the motor coil of the strut motor and the self-priming motor before the ECU control system performs the back door opening or closing action, and if any of the motors has an abnormality, an alarm is issued and the back door is prohibited. When it is turned on or off, it will also detect the state of the Hall sensor. If there is a short circuit to the ground, it will alarm and prohibit the back door from opening or closing. It can reduce the error rate through multiple information judgments, making the electric back door safer and more reliable. Easy to operate;

The power supply unit of the present invention may include a solar panel, and further includes a power generation controller, a battery, and a rectifier, which use solar power to generate power for the ECU control system, provide power, save energy and protect the environment, and satisfy the green travel; and the generated unused The electrical energy can be stored in the battery for use in rainy days, which is very energy efficient. The invention is convenient for the user to use on the one hand, and reduces the error rate by judging a plurality of information on the other hand, so that the electric back door is safer and more reliable, and the operation is convenient;

7. In the housing of the present invention, at the end close to the back cover, the rear end of the upper limit strip is shorter than the rear end of the lower limit strip, so that when the ECU is inserted into the limit slot, it has a guiding effect, which is not easy to be inserted, and is convenient for the ECU to The position is accurate, the insertion is better, the insertion process is smoother, and the sealing performance is good, the manufacturing cost is low, and the practical performance and economic performance are improved.

8. The inner side of the rear cover of the casing of the present invention is provided with a ring of sealing strips, and the section of the sealing strip adjacent to the lower side wall extends to the middle of the rear cover to form a limit stop, the end face shape of the limit stop and the edge of the ECU Matching, the former can ensure the sealing of the casing, and the latter ensures that the ECU is better fixed and does not shake, so as not to affect its circuit performance;

9. The housing of the present invention is provided with a mounting seat for fixing the housing, the mounting seat has a mounting through hole in the middle thereof, and the bottom of the mounting seat has a plurality of blind holes at the periphery of the mounting through hole, that is, the bottom of the mounting seat is not solid. In the case of ensuring the strength of the mount, saving materials and reducing costs;

10. The mounting portion of the left side wall and the lower side wall of the casing of the present invention is provided with a mounting seat, and the connecting portions of the right side wall and the lower side wall are respectively provided with two mounting seats, and the left side wall and the lower side wall are connected The mounting seat is located between the two mounting seats at the junction of the right side wall and the lower side wall, and is fixed by three points, and has high stability.

The above description is only an overview of the technical solutions of the present invention, and the technical means of the present invention can be more clearly understood and can be implemented in accordance with the contents of the specification. Hereinafter, the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

DRAWINGS

Figure 1 is a schematic view of the structure of the present invention (the back cover is not shown);

Figure 2 is a schematic structural view of the housing of the present invention;

Figure 3 is a second schematic structural view of the casing of the present invention;

Figure 4 is a third structural schematic view of the casing of the present invention;

Figure 5 is a fourth structural schematic view of the casing of the present invention;

Figure 6 is a schematic structural view of the back cover of the casing of the present invention after being fastened;

Figure 7 is a control schematic diagram of an ECU of the present invention;

The parts in the drawing are marked as follows:

Central processing unit 1, CAN signal transceiving unit 2, CAN bus 3, door lock electric control unit 41, door lock executing unit 42, self-priming motor control unit 51, self-priming motor 52, back door switch 6, fault detecting unit 7, Buzzer alarm 8, power supply unit 9, solar panel 91, power generation controller 92, battery 93, rectifier 94, first strut motor control unit 201, first strut motor 202, first Hall sensor 203, Two strut motor control unit 111, second strut motor 112, second Hall sensor 113, original vehicle power supply device 95, housing 10, rear cover 101, front side wall 102, upper side wall 103, lower side wall 104 The left side wall 105, the right side wall 106, the upper limit strip 107, the lower limit strip 108, the limiting slot 109, the post 1010, the buckle 1011, the sealing strip 1012, the limit stop 1013, the opening 1014, the mounting seat 1015 The through hole 1016, the blind hole 1017, the groove 1018, and the ECU 20 are installed.

Detailed ways

Specific embodiments of the present invention are described below by way of specific embodiments, and those skilled in the art can readily understand the advantages and functions of the present invention. The invention may be embodied in other different forms, and various modifications and changes can be made without departing from the scope of the invention.

Embodiment: a vehicle electric back door ECU controller, as shown in Figures 1 to 7, the controller includes a housing 10 and an ECU 20 mounted in the housing;

The housing includes a side wall and a rear cover 101 that can open or close to the side wall, and the side wall and the rear cover constitute an accommodating space capable of accommodating the ECU, and the side wall includes a front side wall 102, The upper side wall 103, the lower side wall 104, the left side wall 105 and the right side wall 106, and the front side wall, the upper side wall, the lower side wall, the left side wall, the right side wall and the rear cover are integrally formed, The rear cover is hinged with the lower side wall, the inner portion of the housing and the left side wall and the right side wall each have a set extending from one end of the left side wall to the other end or from One end of the right side wall extends to the limiting strip at the other end, and the position of the limiting strip of the left side wall and the right side wall is opposite, and each set of limiting strips includes an upper limit strip 107 and a lower limit strip 108 And a limiting slot 109 for accommodating the ECU is formed between the upper limit strip and the lower limit strip, and the rear end of the upper limit strip is shorter than the rear end of the lower limit strip at an end near the back cover, The thickness of the upper limit strip gradually increases along the length direction of the left side wall or the rear side wall, and the thickness of the upper limit strip is the most near the end of the back cover Small, similarly, along the length direction of the left side wall or the rear side wall, the thickness of the lower limit strip gradually becomes larger, and the thickness of the lower limit strip near the end of the back cover is the smallest, the ECU Inserting the limiting slot along the guiding and limiting positions of the upper and lower limit strips to realize assembly of the ECU;

The upper surface of the upper side wall is provided with at least two posts 1010, the rear cover is provided with a buckle 1011 corresponding to the post, and the inner side of the rear cover is provided with a ring seal 1012, the seal a section of the strip adjacent to the lower sidewall extends toward the middle of the back cover to form a limit stop 1013, the end face shape of the limit stop matches the edge of the ECU, the seal strip and the limit The stopper is integrally formed with the back cover, and the buckle of the back cover is fastened to the rear cover by the buckle of the rear cover, and the sealing strip is stuck to the side by the sealing strip The rear end of the wall realizes sealing of the housing, and the fixing of the ECU is achieved by the limiting stopper against the ECU;

The ECU includes a control system including a central processing unit 1, a CAN signal transceiving unit 2 having a signal transceiving function, and a CAN bus 3 for receiving vehicle information, one end of the CAN signal unit and the CAN bus Electrically connected, and the other end is electrically connected to the central processing unit;

Also includes:

a door lock control device comprising a door lock electric control unit 41 having an instruction issuing function and a door lock executing unit 42 having an execution instruction function, one end of the door lock electric control unit and the central processing unit Electrically connected, and the other end is electrically connected to the door lock performing unit;

a self-priming motor control device comprising a self-priming motor control unit 51 and a self-priming motor 52 for absorbing a door lock latch of the back door, one end of the self-priming motor control unit and the The central processing unit is electrically connected, and the other end is electrically connected to the self-priming motor;

a back door switch 6, the back door switch being electrically connected to the central processing unit;

a fault detecting unit 7 having a function of detecting a line abnormality, the fault detecting unit being electrically connected to the strut motor, the Hall sensor, the self-priming motor and the central processing unit at the same time;

a buzzer alarm 8, the buzzer alarm being electrically connected to the central processing unit;

A power supply unit 9 is also included, which is electrically connected to the central processing unit.

In this embodiment, the power supply unit includes a solar panel 91 on the back door, and further includes a power generation controller 92, a battery 93, and a rectifier 94. The solar panel is electrically connected to the power generation controller, and the power generation A controller is electrically coupled to the battery, the battery is electrically coupled to the rectifier, and the rectifier is electrically coupled to the central processing unit.

Preferably, the power supply unit further includes an original vehicle power supply device 95, and the original vehicle power supply device is electrically connected to the central processing unit.

The back door switch includes a first switch disposed in a cab of the automobile, a second switch disposed on a back door of the automobile or a car remote control key, and an inductive switch disposed at a bottom of the back door of the automobile, the first switch, The second switch and the inductive switch are both electrically connected to the central processing unit.

The thickness of the sealing strip is 1.8-2.2 mm; the thickness of the thinnest portion of the upper limit strip is 1.8-2.2 mm, and the thickness at the thickest portion is 5-6.5 mm; the thinnest portion of the lower limit strip The thickness is 3-4.5 mm, and the thickness at the thickest portion is 5-6.5 mm.

In this embodiment, a mounting seat is disposed at a joint between the left side wall and the lower side wall, and two mounting seats are disposed at a distance between the right side wall and the lower side wall, and the left side is A mounting seat at the junction of the side wall and the lower side wall is located between the two mounting seats at the junction of the right side wall and the lower side wall.

The limit stop is provided with two, and the end of each of the limit stops is recessed inward to form a groove 1018, and the width of the bottom of the groove matches the thickness of the ECU.

The intermediate position of the limit stop is hollow.

The ECU is a PCBA board with electronic components.

The front side wall has two openings 1014 for the front end of the ECU to extend.

a joint of the left side wall and the lower side wall and a joint of the right side wall and the lower side wall are respectively provided with a mounting seat 1015, and the mounting seat has a mounting through hole 1016 in the middle thereof, A through hole insert nut is mounted, and the bottom of the mount has a plurality of blind holes 1017 at the periphery of the mounting through hole.

The ECU is a PCBA board with electronic components.

The control method of the vehicle electric back door ECU controller includes a back door opening control method, including the following steps:

It also includes a control method for the back door closing, including the following steps:

S1 also includes: the Hall sensor collects the travel data of the strut that controls the back door lift and transmits it to the central processing unit.

S1 further includes: a preset obstacle detection program in the central processing unit, the obstacle detection program includes an operating parameter of the strut motor, and in the process of closing the back door, if an obstacle is encountered, the resistance of the obstacle changes the strut The operating parameters of the motor are fed back to the central processing unit to control the stop or reverse of the strut motor.

In addition, before the ECU control system performs the back door opening or closing action, the fault detecting unit detects the state of the motor coil of the strut motor and the self-priming motor, and if any one of the motors has an abnormality, an alarm is issued, and the back door is prohibited. Turning on or off, the state of the motor coil includes normal, open circuit, short circuit to power supply, and short circuit to ground;

The central processing unit is an MCU.

In this embodiment, the strut control device is provided with two and respectively a first strut control device and a second strut control device;

The first strut control device includes a first strut motor control unit 201 and a first strut motor 202 for controlling the back door lift, and a first Hall sensor 203 disposed on the first strut motor. One end of the first strut motor control unit is electrically connected to the central processing unit, and the other end is electrically connected to the first strut motor; the first Hall sensor is electrically connected to the central processing unit;

The second strut control device includes a second strut motor control unit 111 and a second strut motor 112 for controlling the back door lift, and a second Hall sensor 113 disposed on the second strut motor. One end of the second strut motor control unit is electrically connected to the central processing unit, and the other end is electrically connected to the second strut motor; the second Hall sensor is electrically connected to the central processing unit.

The working process and working principle of the invention are as follows:

In the invention, the ECU is inserted into the limiting slot under the guiding and limiting action of the upper and lower limit strips to realize the assembly of the ECU, and the buckle of the back cover is clamped on the upper side wall to realize the fastening of the back cover. At the same time, the sealing of the casing is achieved by the sealing strip being stuck on the rear end of the side wall, and the fixing of the ECU is achieved by the limiting stopper against the ECU; the structure is simplified, the assembly process of the ECU does not require tools, and only the card of the back cover is needed. The buckle can be fastened to the upper side of the column, and does not need to be fixed by screws, which is simple and easy to operate, has high assembly efficiency and saves assembly cost;

The control system of the invention comprises a central processing unit, a CAN signal transceiving unit and a CAN bus, a strut control device, a door lock control device, a self-priming motor control device, a back door switch and a fault detecting unit, and transmits and receives CAN signals through the CAN signal transceiving unit. The unit accepts the back door opening signal from the CAN bus of the vehicle and the vehicle state information, and automatically controls the back door switch and the lock according to the state of the vehicle, thereby realizing the automatic opening, closing or staying of the rear door of the car in any intermediate position, so that the vehicle The tailgate switch is safe and reliable, more user-friendly and intelligent, which is convenient for users to use, improves user experience, and has good economic and social benefits.

The above is only the embodiment of the present invention, and thus the above is only the embodiment of the present invention, and thus does not limit the scope of the patent of the present invention, and the equivalent structure made by the specification and the drawings of the present invention, or directly Or indirectly, in other related technical fields, it is equally included in the scope of patent protection of the present invention.

Claims

A vehicle electric back door ECU controller, characterized in that the controller comprises a housing (10) and an ECU (20) installed in the housing;

The housing includes a side wall and a rear cover (101) capable of opening or closing the side wall, the side wall and the rear cover forming an accommodation space capable of accommodating an ECU, the side wall including a front side wall (102), an upper side wall (103), a lower side wall (104), a left side wall (105), and a right side wall (106), and the front side wall, the upper side wall, the lower side wall, and the left side wall The right side wall and the rear cover are integrally formed, and the rear cover is hinged with the lower side wall, and the inside of the casing and the left side wall and the right side wall each have a set of One end of the left side wall extends to the other end or a limiting strip extending from one end of the right side wall to the other end, and the position of the limiting strip of the left side wall and the right side wall is opposite, each group of limiting positions The strips include an upper limit strip (107) and a lower limit strip (108), and a limit groove (109) for accommodating the ECU is formed between the upper limit strip and the lower limit strip, at an end near the back cover. The rear end of the upper limit strip is shorter than the rear end of the lower limit strip, and along the length direction of the left side wall or the rear side wall, the thickness of the upper limit strip gradually becomes larger, and is close to the back cover. The upper limit The thickness of the strip is the smallest, and similarly, along the length direction of the left side wall or the rear side wall, the thickness of the lower limit strip gradually becomes larger, and the thickness of the lower limit strip near the end of the back cover is the smallest. The ECU inserts along the limiting slot under the guidance and the limit of the upper and lower limit strips to realize assembly of the ECU;

The upper surface of the upper side wall is provided with at least two posts (1010), the back cover is provided with a buckle (1011) corresponding to the post, and a sealing strip is arranged on the inner side of the rear cover ( 1012), the section of the sealing strip near the lower sidewall extends toward the middle of the back cover to form a limit stop (1013), and the end face shape of the limit stop matches the edge of the ECU. The sealing strip and the limiting stopper are integrally formed with the back cover, and the buckle of the back cover is fastened to the pillar of the upper side wall to realize the fastening of the back cover, and at the same time The sealing strip is stuck to the rear end of the side wall to achieve sealing of the housing, and the fixing of the ECU is achieved by the limiting stopper against the ECU;

The ECU includes a control system including a central processing unit (1), a CAN signal transceiving unit (2) having a signal transceiving function, and a CAN bus (3) for receiving vehicle information, the CAN signal unit One end is electrically connected to the CAN bus, and the other end is electrically connected to the central processing unit;

Also includes:

a strut control device, comprising: a strut motor control unit and a strut motor for controlling the back door lift, and a Hall sensor provided on the strut motor and having a data acquisition function, the support One end of the rod motor control unit is electrically connected to the central processing unit, and the other end is electrically connected to the strut motor; the Hall sensor is electrically connected to the central processing unit;

a door lock control device comprising a door lock electric control unit (41) having an instruction issuing function and a door lock executing unit (42) having a function of executing an instruction, one end of the door lock electric control unit The central processing unit is electrically connected, and the other end is electrically connected to the door lock performing unit;

a self-priming motor control device comprising a self-priming motor control unit (51) and a self-priming motor (52) for sucking the door lock of the back door, the self-priming motor control unit One end is electrically connected to the central processing unit, and the other end is electrically connected to the self-priming motor;

a back door switch (6), the back door switch being electrically connected to the central processing unit;

a fault detecting unit (7) having a function of detecting a line abnormality, wherein the fault detecting unit is electrically connected to the strut motor, the Hall sensor, the self-priming motor and the central processing unit at the same time;

a buzzer alarm (8), the buzzer alarm being electrically connected to the central processing unit;

A power supply unit (9) is also included, which is electrically connected to the central processing unit.
A vehicle electric back door ECU controller according to claim 1, wherein said power supply unit comprises a solar panel (91) on the back door, further comprising a power generation controller (92), a battery (93), and a rectifier (94), the solar panel is electrically connected to the power generation controller, the power generation controller is electrically connected to the battery, the battery and the rectifier are electrically connected, the rectifier and the central processing unit Electrical connection.
The vehicle electric back door ECU controller according to claim 1, wherein the back door switch comprises a first switch disposed in a cab of the automobile, a second door disposed on a back door of the automobile or a car remote control key And a switch and an inductive switch disposed at a bottom of the back door of the automobile, wherein the first switch, the second switch, and the inductive switch are electrically connected to the central processing unit.
The vehicle electric back door ECU controller according to claim 1, wherein the sealing strip has a thickness of 1.8-2.2 mm; the thinnest portion of the upper limit strip has a thickness of 1.8-2.2 mm, and the most The thickness of the thick portion is 5-6.5 mm; the thickness of the thinnest portion of the lower limit strip is 3-4.5 mm, and the thickness at the thickest portion is 5-6.5 mm.
The vehicle electric back door ECU controller according to claim 1, wherein said power supply unit further comprises an original vehicle power supply unit (95), said original vehicle power supply unit being electrically connected to said central processing unit.
A control method for a vehicle electric back door ECU controller according to claim 1, comprising: a control method of back door opening, the control method comprising the following steps:

Step 1: When the back door is closed, the central processing unit receives the back door opening signal of the CAN bus from the vehicle and the vehicle state information through the CAN signal transceiver unit, and transmits the alarm signal to the buzzer alarm, and simultaneously transmits the command to the self-priming The motor control unit controls the self-priming motor to release the door lock, and then the door lock electric control unit accepts the command and controls the door lock executing unit to open the door lock;

Step 2, then the central processing unit transmits the command to the strut motor control unit, and the strut control unit controls the propeller motor to rotate and then drives the strut to open the back door;
The control method of the vehicle electric back door ECU controller according to claim 6, further comprising: a control method of the back door closing, the control method comprising the following steps:

S1. In the state where the back door is opened, the central processing unit receives the back door closing signal of the CAN bus from the vehicle and the vehicle state information through the CAN signal transceiver unit, and transmits the alarm signal to the buzzer alarm, and simultaneously transmits the command to the support. The rod motor control unit, the strut control unit controls the rotation of the strut motor to drive the strut to close the back door, and in the process of the back door descending, the door lock performs the unit action, and the back door realizes the semi-lock;

S2, then the central processing unit transmits the command to the self-priming motor control unit, and the self-priming motor control unit controls the self-priming motor to move and close the door lock to realize the full lock of the door lock.
The control method of the vehicle electric back door ECU control system according to claim 6 or 7, wherein in steps 1 and S1, the received vehicle information includes a vehicle running state, and the vehicle running state includes a vehicle speed.
The control method of the vehicle electric back door ECU controller according to claim 7, wherein the S1 further comprises: the Hall sensor collecting and controlling the travel data of the strut lifted by the back door and transmitting the data to the central processing unit.
The control method of the vehicle electric back door ECU controller according to claim 7, wherein: S1 further comprises: presetting an obstacle detection program in the central processing unit, wherein the obstacle detection program includes an operating parameter of the strut motor, In the process of closing the back door, if an obstacle is encountered, the resistance of the obstacle changes the operating parameters of the strut motor and feeds back to the central processing unit, thereby controlling the strut motor to stop or reverse.