CN220410540U - Hall type induction control motor mode electric power-assisted braking device - Google Patents

Abstract

The utility model relates to an electric power-assisted braking device in a Hall type induction control motor mode, which comprises a shell, a stator assembly, a rotor assembly and a pedal rod system, wherein the stator assembly, the rotor assembly and the pedal rod system are arranged in the shell, a driving assembly is further arranged in the shell, a detection assembly in signal connection with the driving assembly is arranged in the shell, the detection assembly comprises a rotor sensor assembly for detecting the rotation of the rotor assembly, the rotor assembly comprises a rotor magnetic ring, the rotor magnetic ring is set to be a sine magnetic field, the rotor sensor assembly comprises a Hall chip for inducing the magnetic field change of the rotor magnetic ring, and the Hall chip detects the rotation speed of the rotor assembly based on the sine magnetic field change in the rotation process of the rotor assembly. The Hall sensor component directly senses the rotor magnetic ring, the rotor magnetic ring is a sine magnetic field, a magnet module of the sensor is omitted, the cost is saved, and the sensing precision is improved.

Description

Hall type induction control motor mode electric power-assisted braking device

Technical Field

The utility model relates to an electric power-assisted braking device adopting a Hall type induction control motor mode.

Background

The applicant's prior patent CN20211621444.7 discloses an electronic brake booster comprising: the utility model provides a but with operating force transfer to brake master cylinder axial displacement's push rod, but motor and circumference pivot are to translation device, circumference pivot is to translation device and motor rotor cooperation connection, turn into motor rotor circumference rotation and be circumference pivot to translation device's axial displacement, still include shell and control panel assembly, the control panel assembly includes the control panel, the control panel sets up in the shell, the control panel is connected with the vehicle electrical system, still including being used for detecting the relative displacement of push rod and being used for detecting motor rotor's pivoted two sensors, the control panel obtains vehicle speed information from the vehicle electrical system, the rotation of rotor is controlled according to the information and the vehicle information of two sensors that obtain. The sensor for detecting the rotation of the motor rotor is generally realized by detecting the magnetic field change between the sensor and the rotor by adopting a sensor with a magnet module, and has higher cost and poorer induction precision.

Disclosure of Invention

The utility model aims to overcome the defects and the shortcomings of the prior art and provides an electric power-assisted braking device adopting a Hall type induction control motor mode.

The technical scheme adopted by the utility model is as follows: the electric booster brake device comprises a shell, a stator assembly, a rotor assembly and a pedal rod system, wherein the stator assembly, the rotor assembly and the pedal rod system are arranged in the shell, the driving assembly is further arranged, the stator assembly comprises a winding coil iron core electrically connected with the driving assembly, the rotor assembly is rotatably and fixedly arranged on the inner side of the stator assembly through a bearing, and the rotor assembly can rotate under the action of an electromagnetic field of the winding coil;

the rotor assembly comprises a rotor magnetic ring, the rotor magnetic ring is set to be a sine magnetic field, the rotor sensor assembly comprises a Hall chip used for inducing the magnetic field change of the rotor magnetic ring, and the Hall chip detects the rotating speed of the rotor assembly based on the sine magnetic field change in the rotating process of the rotor assembly.

The rotor magnetic ring is of an integrated magnetic ring structure of an N-pole sinusoidal magnetic field, at least two Hall chips are arranged and distributed at intervals in an arc shape matched with the rotor magnetic ring, the included angle of every two adjacent Hall chips is N/N DEG, and N is an integer more than or equal to 1.

The rotor magnetic ring is a 20-pole sinusoidal magnetic field, the rotor sensor assembly is provided with four Hall chips, wherein the included angles between the first Hall chip and the second Hall chip, between the third Hall chip and the fourth Hall chip are 18 degrees, and the included angle between the second Hall chip and the third Hall chip is 27 degrees.

The shell comprises a front shell and a rear shell which are connected, a supporting disc is arranged between the front shell and the rear shell, and the rotor sensor assembly is fixed at a position of the supporting disc corresponding to the rotor assembly.

The support disc comprises an outer ring part, an inner ring part and connecting strips connected between the outer ring part and the inner ring part, wherein the outer ring part is connected between a front shell and a rear shell, and particularly, a plurality of through holes are formed in the outer ring part, and the outer ring part, the outer ring part and the rear shell are sequentially penetrated through the front shell, the outer ring part and the rear shell through a plurality of bolt pieces to enable the three parts to be connected and fastened, and the position of the inner ring part corresponds to the position of a rotor magnetic ring;

the rotor sensor assembly comprises a Hall plate mounting frame, a Hall control plate and a plurality of first fastening screws, wherein the Hall plate mounting frame is arc-shaped, the Hall plate mounting frame is fixedly connected to one side, close to a rotor magnetic ring, of the inner ring portion through the plurality of first fastening screws, the Hall control plate is fixed to one side, close to the rotor magnetic ring, of the Hall plate mounting frame, and the Hall chip is fixed to the lower end face, close to the rotor magnetic ring, of the Hall control plate.

The pedal rod system comprises a pedal rod, a push rod and a top shaft which are sequentially arranged along the axial direction, a screw rod is sleeved outside the push rod, a screw sleeve is sleeved outside the screw rod, the screw rod is in threaded connection with the screw sleeve to form a circumferential rotating shaft translation structure, the screw sleeve is positioned in the rotor assembly and is in circumferential linkage fit with the rotor assembly, one end of the screw rod, which is close to the top shaft, is provided with a positioning support frame, the positioning support frame is connected with the shell to enable the positioning support frame to displace along the axial direction of the screw rod relative to the shell and be non-rotatable along the circumferential direction, and the screw rod is fixedly connected with the positioning support frame to enable the screw rod to be non-rotatable along the circumferential direction; the positioning support frame is provided with a mounting seat in an abutting joint mode at one end, close to the brake master cylinder, of the positioning support frame, an action disc made of elastic materials is arranged between the mounting seat and the brake master cylinder in an abutting joint mode, the top shaft is matched with the action disc, a displacement detection stop block is arranged between the top shaft and the push rod in an abutting joint mode, and the displacement detection stop block can axially move for a certain distance relative to the mounting seat under the action of the push rod;

the detection assembly comprises a pedal lever sensor assembly for detecting axial displacement of the push rod relative to the mounting seat.

The pedal lever sensor assembly comprises a pedal lever sensor mounting frame, a pedal lever displacement circuit board with a displacement detection sensor and second fastening screws, wherein the pedal lever sensor mounting frame is connected and fastened on the side wall of the mounting seat through a plurality of second fastening screws, and the displacement detection sensor is matched with the displacement detection stop block to be used for detecting the displacement quantity of the displacement detection stop block relative to the mounting seat.

And an inductance or magnetic sensing mode is adopted between the displacement detection sensor and the displacement detection stop block.

The drive assembly comprises a base and an assembly shell formed by connecting an upper cover, a driver circuit board and a wiring terminal which is fixed on the driver circuit board and is exposed relative to the assembly shell are fixed between the base and the upper cover, a first through hole for a power line and a signal line on the driver circuit board to penetrate out and a wire harness protective sleeve are arranged on the base, the lower end of the first through hole corresponds to the through hole, a second through hole for the wire harness protective sleeve to extend in is formed in the rear shell, the base is fixedly connected with the rear shell, the wire harness protective sleeve extends into a shell cavity formed by connecting a front shell and a rear shell, and the power line and the signal line on the driver circuit board are respectively connected with a stator assembly and a detection assembly in the shell cavity after penetrating through the wire harness protective sleeve.

The pedal rod sensor assembly is connected with the Hall control board through a signal transmission wire harness, the signal wire is connected with the Hall control board, signals of the Hall chip are received through the Hall control board, and signals of the displacement detection sensor are received through the Hall control board, the signal transmission wire harness and the pedal rod sensor assembly.

The beneficial effects of the utility model are as follows: the Hall sensor component directly senses the rotor magnetic ring, the rotor magnetic ring is a sine magnetic field, a magnet module of the sensor is omitted, the cost is saved, and the sensing precision is improved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that it is within the scope of the utility model to one skilled in the art to obtain other drawings from these drawings without inventive faculty.

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

FIG. 2 is an exploded view of one embodiment of the present utility model;

FIG. 3 is a cross-sectional view of one embodiment of the present utility model;

FIG. 4 is an exploded view of a pedal lever system in accordance with one embodiment of the present utility model;

FIG. 5 is an exploded view of a pedal lever system in accordance with one embodiment of the present utility model;

FIG. 6 is an enlarged schematic view of portion A of FIG. 3;

FIG. 7 is a schematic diagram of a rotor assembly according to an embodiment of the present utility model;

FIG. 8 is a schematic view of a rotor sensor assembly mounting structure in accordance with one embodiment of the present utility model;

FIG. 9 is an exploded view of a rotor sensor assembly mounting structure in accordance with one embodiment of the present utility model;

FIG. 10 is a schematic view of a Hall plate mounting bracket in accordance with one embodiment of the present utility model;

FIG. 11 is an enlarged schematic view of portion A of FIG. 5;

FIG. 12 is an exploded view of the mounting structure of the pedal lever sensor assembly in one embodiment of the present utility model;

FIG. 13 is a schematic view of a displacement detection block according to an embodiment of the present utility model;

FIG. 14 is a schematic view of a mounting base according to an embodiment of the present utility model;

FIG. 15 is a schematic view illustrating a positioning support frame according to an embodiment of the present utility model;

FIG. 16 is an exploded view of a drive assembly according to one embodiment of the present utility model;

FIG. 17 is an enlarged schematic view of portion B of FIG. 3;

in the figure, a front shell-1, a stator assembly-2, a rotor assembly-3, a rotor ring-31, a spline housing-32, a rotor magnetic ring-33, a pedal lever system-4, a pedal lever-41, a screw housing-43, a screw-44, a push rod-45, a top shaft-46, a positioning support frame-47, a limit hole-471, a displacement detection block-48, a detection part-481, a limit bump-482, a mounting seat-49, a cross mounting groove-491, a mounting side wall-492, an action disk-410, a support disk-5, an outer ring-51, an inner ring-52, a connecting strip-53, a bearing-6, a compression spring-7, a rear shell-8, a driving assembly-9, a base-91, a through hole-911, an upper cover-92, a driver circuit board-93, a wiring terminal-94, a wiring harness protective sleeve-95, a third fastening screw-96, a brake master cylinder-10, a rotor sensor assembly-11, a hall chip-111, a hall plate mounting bracket-112, a hall plate-1121, a first signal pin-113, a hall plate-115, a first wiring harness-fixing pin-122, a first wiring harness-125, a second wiring harness-signal pin-transmitting wire-122, a plurality of fastening screws-122, a plurality of wiring harness-122, a first wiring harness-signal pins-122, a first wiring harness-signal fastening device-signal pins-122, a signal fastening device and a wiring harness-signal conductors and a wiring device and a wiring harness.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent.

It should be noted that, in the embodiments of the present utility model, all the expressions "first" and "second" are used to distinguish two entities with the same name but different entities or different parameters, and it is noted that the "first" and "second" are only used for convenience of expression, and should not be construed as limiting the embodiments of the present utility model, and the following embodiments are not described one by one.

The terms of direction and position in the present utility model, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., refer only to the direction or position of the drawing. Accordingly, directional and positional terms are used to illustrate and understand the utility model and are not intended to limit the scope of the utility model.

An electric power-assisted braking device is shown in fig. 1-3, and comprises a shell, wherein the shell comprises a front shell 1 and a rear shell 8 which are connected, a stator assembly 2, a rotor assembly 3 and a pedal lever system 4 are arranged in the shell, a driving assembly 9 and a brake master cylinder 10 are connected to the rear shell 8, the brake master cylinder 10 stretches into the shell to be matched with the pedal lever system 4, and the driving assembly 9 is connected with the rear shell 8 and is electrically connected with the stator assembly 2.

The stator assembly 2 comprises a coil iron core, the rotor assembly 3 is rotatably and fixedly arranged on the inner side of the stator assembly 2 through a bearing 6, and the rotor assembly 3 can rotate under the action of an electromagnetic field of the coil iron core.

As shown in fig. 4 and 5, the pedal lever system 4 includes a pedal lever 41, a push rod 45 and a top shaft 46 that are sequentially arranged along an axial direction, a screw rod 44 is sleeved outside the push rod 45, a threaded sleeve 43 is sleeved outside the screw rod 44, the screw rod 44 and the threaded sleeve 43 are in threaded connection and cooperation to form a circumferential rotation axial translation structure, the threaded sleeve 43 is positioned in the rotor assembly 3 and is in circumferential linkage and cooperation with the rotor assembly 3, one end of the screw rod 44, which is close to the top shaft 46, is provided with a positioning support frame 47, the positioning support frame 47 is connected with a housing so that the positioning support frame 47 is displaced along the axial direction of the screw rod 44 relative to the housing and is not rotatable along the circumferential direction, and the screw rod 44 is fixedly connected with the positioning support frame 47 so that the screw rod 44 is not rotatable along the circumferential direction, and when the rotor assembly 3 drives the threaded sleeve 43 to rotate along the circumferential direction, the screw rod 44 moves up and down along the axial direction. The positioning support frame 47 is close to one end of the brake master cylinder 10 and is in butt fit with a mounting seat 49, an action disc 410 made of elastic materials is in butt fit between the mounting seat 49 and the brake master cylinder 10, the top shaft 46 is matched with the action disc 410, a displacement detection stop block 48 is in butt fit between the top shaft 46 and the push rod 45, and the displacement detection stop block 48 can move a certain distance along the axial direction relative to the mounting seat 49 under the action of the push rod 45. A compression spring 7 is arranged between the mounting seat 49 and the rear housing 8.

The shell is internally provided with a detection assembly, the detection assembly comprises a rotor sensor assembly 11 for detecting the rotation of the rotor assembly 3 and a pedal lever sensor assembly 12 for detecting the axial displacement of the push rod 45 relative to the mounting seat 49, the detection assembly is in electrical signal connection with the drive assembly 9, and the drive assembly 9 receives data detected by the detection assembly and controls the rotation of the rotor assembly 3 according to the detected data.

As shown in fig. 2 and 3, a support plate 5 is disposed between the front housing 1 and the rear housing 8, and the rotor sensor assembly 11 is fixed at a position of the support plate 5 corresponding to the rotor assembly 3. Specifically, as shown in fig. 7, the rotor assembly 3 includes a rotor ring 31, a spline housing 32 fixed in the rotor ring 31, and a rotor magnetic ring 33 fixed on an outer wall of the rotor ring 31, wherein the outer wall of the screw housing 43 is of a spline structure in plug-in fit with the spline housing 32, so that the screw housing 43 and the rotor assembly 3 form circumferential linkage fit, the rotor magnetic ring is set to be a sinusoidal magnetic field, the rotor sensor assembly 11 includes a hall chip 111 for sensing magnetic field variation of the rotor magnetic ring, and the hall chip 111 detects the rotation speed of the rotor assembly 3 based on the sinusoidal magnetic field variation in the rotation process of the rotor assembly 3. Compared with the detection structure in the prior art, the magnet module of the sensor is omitted, and the cost is saved.

Further, the rotor magnetic ring 33 is set to be an integral magnetic ring structure of an N-pole sinusoidal magnetic field, the number of the hall chips 111 is at least two, the at least two hall chips 111 are distributed at intervals in an arc shape adapted to the rotor magnetic ring 33, the included angle between two adjacent hall chips 111 is N/2N x 360 °, and N is an integer greater than or equal to 1. In this embodiment, the rotor magnetic ring 33 is a 20-pole sinusoidal magnetic field, as shown in fig. 8, and the rotor sensor assembly 11 is provided with four hall chips 111, wherein the included angles between the first hall chip 111 and the second hall chip 111, and between the third hall chip 111 and the fourth hall chip 111 are all 18 °, and the included angle between the second hall chip 111 and the third hall chip 111 is 27 °, so as to improve the sensing accuracy.

Further, as shown in fig. 8, the supporting plate 5 includes an outer ring portion 51, an inner ring portion 52, and a connecting strip 53 connected between the outer ring portion 51 and the inner ring portion 52, where the outer ring portion 51 is connected between the front housing 1 and the rear housing 8, specifically, a plurality of through holes are formed in the outer ring portion 51, and the outer ring portion 51 and the rear housing 8 sequentially penetrate through the front housing 1, the outer ring portion 51 and the rear housing 8 through a plurality of bolt members to fasten the connection therebetween, the position of the inner ring portion 52 corresponds to the position of the rotor magnetic ring 33, and the rotor sensor assembly 11 is fixed on one side of the inner ring portion 52 close to the rotor magnetic ring 33.

Further, as shown in fig. 9, the rotor sensor assembly 11 includes a hall plate mounting frame 112, a plurality of first signal pins 113, a hall control board 114, a first harness fixing buckle 115, and a plurality of first fastening screws 116, where the hall plate mounting frame 112 is arc-shaped, the hall plate mounting frame 112 is fastened on a side of the inner ring portion 52, which is close to the rotor magnetic ring 33, through the connection of the plurality of first fastening screws 116, a plurality of pin slots for mounting and fixing the first signal pins 113 are provided on an inner side of the hall plate mounting frame 112, the first signal pins 113 are fixed in the pin slots one by one, the hall control board 114 is fixed on a side of the hall plate mounting frame 112, which is close to the rotor magnetic ring 33, and is spliced with the first signal pins 113 to form a signal connection, and the hall chip 111 is fixed on a lower end surface of the hall control board 114, which is close to the rotor magnetic ring 33. Specifically, as shown in fig. 10, the hall plate mounting rack 112 is provided with a plurality of fastening portions 1121 for limiting the hall control board 114, when the hall control board 114 is installed, the hall control board 114 is directly pressed between the plurality of fastening portions 1121, and the fastening portions 1121 are provided with guide inclined planes for facilitating installation of the hall control board 114.

As shown in fig. 11, the pedal lever sensor assembly 12 includes a pedal lever sensor mounting frame 121, a plurality of second signal pins 122, a pedal lever displacement circuit board 123 with a displacement detection sensor, a signal transmission harness 124, a second harness fixing buckle 125, and a second fastening screw 126, where the pedal lever sensor mounting frame 121 is fastened on the side wall of the mounting seat 49 through the plurality of second fastening screws 126, and specifically, the displacement detection sensor and the displacement detection stop 48 are matched to detect the displacement of the displacement detection stop 48 relative to the mounting seat 49, and an inductance or magnetic sensing manner is adopted between the displacement detection sensor and the displacement detection stop 48, so as to improve the pedal lever sensing precision. The pedal lever sensor mounting frame 121 is provided with a plurality of pin slots for mounting and fixing the second signal pins 122, the second signal pins 122 are fixed in the pin slots one by one, the pedal lever displacement circuit board 123 is fixed on the pedal lever sensor mounting frame 121 and is spliced with the second signal pins 122 to form signal connection, and the displacement detection sensor thereon is arranged corresponding to the displacement detection stop block 48 and is arranged relative to the moving path of the mounting seat 49.

The first harness fixing buckle 115 is in buckle connection with the hall plate mounting frame 112, and one end of the signal transmission harness 124 is fixed between the first harness fixing buckle 115 and the hall plate mounting frame 112, so that the first harness fixing buckle and the hall plate mounting frame 112 are kept attached to a plurality of first signal pins 113 to form signal connection; the second wire harness fixing buckle 125 is in buckle connection with the pedal lever sensor mounting frame 121, and the other end of the signal transmission wire harness 124 is fixed between the second wire harness fixing buckle 125 and the pedal lever sensor mounting frame 121, so that the signal transmission wire harness and the plurality of second signal pins 122 are kept in fit to form signal connection.

As shown in fig. 13, the displacement detecting block 48 is in a cross shape, one side of the displacement detecting block is protruded to form a detecting portion 481 matched with the displacement detecting sensor, as shown in fig. 14, a cross-shaped mounting groove 491 for placing the displacement detecting block 48 is formed at the bottom of the mounting seat 49, the positioning support 47 is fixedly connected with the bottom of the mounting seat 49, the displacement amount of the displacement detecting block 48 positioned in the cross-shaped mounting groove 491 is limited, the mounting seat 49 is opened at one side of the cross-shaped mounting groove 491 corresponding to the detecting portion 481, and a mounting side wall 492 for connecting the pedal lever sensor mounting frame 121 through the second fastening screw 126 is formed at the outer wall of the side.

The lower end surface of the displacement detection block 48 is provided with a limit bump 482, as shown in fig. 15, the positioning support frame 47 is provided with a limit hole 471 corresponding to the limit bump 482 and adapted to the shape of the limit bump.

As shown in fig. 16, the driving assembly 9 includes an assembly housing formed by connecting a base 91 and an upper cover 92, a driver circuit board 93 and a connection terminal 94 fixed on the driver circuit board 93 and exposed relative to the assembly housing are fixed between the base 91 and the upper cover 92, a first through hole 911 for passing through a power line and a signal line on the driver circuit board 93 and a wire harness protecting cover 95 is fixed on the base 91 and a lower end of the first through hole 911 corresponding to the through hole 911, a second through hole for extending into the wire harness protecting cover 95 is arranged on the rear housing 8, the base 91 is fixedly connected with the rear housing 8, the wire harness protecting cover 95 extends into a housing cavity formed by connecting the front housing 1 and the rear housing 8, the power line and the signal line on the driver circuit board 93 are respectively connected with a stator assembly 2 and a detection assembly in the housing cavity after passing through the wire harness protecting cover 95, and specifically, the signal line is connected with a hall control board 114, and signals of the chip 111 are received by the hall control board 114, the signal transmission wire harness 124 and the pedal lever displacement circuit board 123.

Specifically, the upper cover 92, the base 91, and the rear housing 8 are sequentially fastened by a third fastening screw 96. And a sealing ring is arranged between the wire harness protective sleeve 95 and the rear shell 8, so that the tightness is improved.

In this embodiment, the driving assembly 9 is directly mounted on the housing, and the power line and the signal line enter the driving assembly through the harness protecting sleeve, so that the harness protecting sleeve prevents the wires from being mixed as the wires belong to the flexible wires. The drive assembly is integrated on the shell, and the motor UVW is directly connected to the driver PCB board internally, so that the cost of connectors and wiring harnesses is saved, and the size is optimized.

Those of ordinary skill in the art will appreciate that all or a portion of the steps in implementing the methods of the above embodiments may be implemented by a program to instruct related hardware, where the program may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc.

The foregoing disclosure is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, which is defined by the appended claims.

Claims (10)

1. The electric power-assisted braking device comprises a shell, a stator assembly (2), a rotor assembly (3) and a pedal rod system (4) which are arranged in the shell, and further comprises a driving assembly (9), wherein the stator assembly (2) comprises a coil iron core electrically connected with the driving assembly (9), the rotor assembly (3) is rotatably and fixedly arranged at the inner side of the stator assembly (2) through a bearing (6), and the rotor assembly (3) can rotate under the action of a coil electromagnetic field;

be provided with in the shell with drive assembly (9) signal connection's detection subassembly, detection subassembly is including being used for detecting rotor sensor subassembly (11) that rotor subassembly (3) rotated, its characterized in that:

the rotor assembly (3) comprises a rotor magnetic ring (33), the rotor magnetic ring is set to be a sine magnetic field, the rotor sensor assembly (11) comprises a Hall chip (111) for inducing the magnetic field change of the rotor magnetic ring, and the Hall chip (111) detects the rotating speed of the rotor assembly (3) based on the sine magnetic field change in the rotating process of the rotor assembly (3).

2. The hall-effect induction control motor mode electric power brake device according to claim 1, wherein: the rotor magnetic ring (33) is of an integrated magnetic ring structure of an N-pole sinusoidal magnetic field, the number of the Hall chips (111) is at least two, the at least two Hall chips (111) are distributed at intervals in an arc shape which is matched with the rotor magnetic ring (33), the included angle of every two adjacent Hall chips (111) is N/2N x 360 degrees, and N is an integer which is more than or equal to 1.

3. The hall-effect induction control motor mode electric power brake device according to claim 2, wherein: the rotor magnetic ring (33) is a 20-pole sinusoidal magnetic field, the rotor sensor assembly (11) is provided with four Hall chips (111), wherein the included angles between the first Hall chip (111) and the second Hall chip (111), between the third Hall chip (111) and the fourth Hall chip (111) are 18 degrees, and the included angle between the second Hall chip (111) and the third Hall chip (111) is 27 degrees.

4. The hall-effect induction control motor mode electric power brake device according to claim 1, wherein: the shell comprises a front shell (1) and a rear shell (8) which are connected, a supporting disc (5) is arranged between the front shell (1) and the rear shell (8), and the rotor sensor assembly (11) is fixed at the position of the supporting disc (5) corresponding to the rotor assembly (3).

5. The hall-effect motor-driven power-assisted brake device according to claim 4, wherein: the support disc (5) comprises an outer ring part (51), an inner ring part (52) and a connecting strip (53) connected between the outer ring part (51) and the inner ring part (52), the outer ring part (51) is connected between the front shell (1) and the rear shell (8), the outer ring part (51) is provided with a plurality of through holes, and the outer ring part (51) and the rear shell (8) are sequentially connected and fastened through a plurality of bolt pieces, and the position of the inner ring part (52) corresponds to the position of the rotor magnetic ring (33);

rotor sensor subassembly (11) include hall plate mounting bracket (112), hall control board (114), a plurality of first fastening screw (116), hall plate mounting bracket (112) are the pitch arc form, hall plate mounting bracket (112) are connected the fastening in one side that inner ring portion (52) is close to rotor magnetic ring (33) through a plurality of first fastening screw (116), hall control board (114) are fixed in one side that hall plate mounting bracket (112) is close to rotor magnetic ring (33), hall chip (111) are fixed in hall control board (114) and are close to the lower terminal surface of rotor magnetic ring (33).

6. The hall-effect induction control motor mode electric power brake device according to claim 1, wherein: the pedal rod system (4) comprises a pedal rod (41), a push rod (45) and a top shaft (46) which are sequentially arranged along the axial direction, a screw rod (44) is sleeved outside the push rod (45), a threaded sleeve (43) is sleeved outside the screw rod (44), the screw rod (44) and the threaded sleeve (43) are in threaded connection and form a circumferential rotation axial translation structure, the threaded sleeve (43) is positioned in the rotor assembly (3) and is in circumferential linkage and fit with the rotor assembly (3), one end, close to the top shaft (46), of the screw rod (44) is provided with a positioning support frame (47), the positioning support frame (47) is connected with a shell to enable the positioning support frame (47) to be displaced along the axial direction of the screw rod (44) relative to the shell and be rotationally non-rotatable along the circumferential direction of the screw rod (44), and the screw rod (44) is fixedly connected with the positioning support frame (47) to enable the screw rod (44) to be rotationally non-rotatable along the circumferential direction; an installation seat (49) is in butt joint with one end, close to the brake master cylinder (10), of the positioning support frame (47), an action disc (410) made of elastic materials is in butt joint between the installation seat (49) and the brake master cylinder (10), the top shaft (46) is in butt joint with the action disc (410), a displacement detection stop block (48) is in butt joint between the top shaft (46) and the push rod (45), and the displacement detection stop block (48) can axially move for a certain distance relative to the installation seat (49) under the action of the push rod (45);

the detection assembly includes a pedal lever sensor assembly (12) for detecting axial displacement of the push rod (45) relative to the mounting seat (49).

7. The hall-effect induction control motor mode electric power brake device according to claim 6, wherein: the pedal lever sensor assembly (12) comprises a pedal lever sensor mounting frame (121), a pedal lever displacement circuit board (123) with a displacement detection sensor and second fastening screws (126), wherein the pedal lever sensor mounting frame (121) is fixedly connected to the side wall of the mounting seat (49) through a plurality of second fastening screws (126), and the displacement detection sensor is matched with the displacement detection stop block (48) to detect the displacement of the displacement detection stop block (48) relative to the mounting seat (49).

8. The hall-effect induction control motor mode electric power brake device according to claim 7, wherein: an inductance or magnetic sensing mode is adopted between the displacement detection sensor and the displacement detection stop block (48).

9. The hall-effect induction control motor mode electric power brake device according to claim 6, wherein: the shell includes the preceding casing (1) that is connected, back casing (8), drive assembly (9) are including base (91), upper cover (92) are connected the assembly casing that forms, are fixed with driver circuit board (93) between base (91), upper cover (92) and fix on driver circuit board (93) terminal (94) that relative assembly casing exposes, be equipped with on base (91) first through-hole (911) and its lower extreme that supply power cord and signal line on driver circuit board (93) to wear out and correspond through-hole (911) and be fixed with pencil protective sheath (95), be equipped with the second through-hole that supplies pencil protective sheath (95) to stretch into on back casing (8), pencil protective sheath (95) stretch into the shell inner chamber that front casing (1), back casing (8) link to each other and form, power cord and signal line on driver circuit board (93) pass behind pencil (95) and are connected with stator module (2) and detection subassembly in the shell inner chamber respectively.

10. The hall-effect induction control motor mode electric power brake device according to claim 9, wherein: the pedal lever sensor assembly (12) is connected with the Hall control board (114) through a signal transmission wire harness (124), the signal wire is connected with the Hall control board (114), signals of the Hall chip (111) are received through the Hall control board (114), and signals of the displacement detection sensor are received through the Hall control board (114), the signal transmission wire harness (124) and the pedal lever sensor assembly (12).