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WO2018205713A1 - 一种电动车力矩感应测量式电机及电动自行车 - Google Patents

一种电动车力矩感应测量式电机及电动自行车 Download PDF

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Publication number
WO2018205713A1
WO2018205713A1 PCT/CN2018/077239 CN2018077239W WO2018205713A1 WO 2018205713 A1 WO2018205713 A1 WO 2018205713A1 CN 2018077239 W CN2018077239 W CN 2018077239W WO 2018205713 A1 WO2018205713 A1 WO 2018205713A1
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WO
WIPO (PCT)
Prior art keywords
motor
torque
sensing
speed
electric vehicle
Prior art date
Application number
PCT/CN2018/077239
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English (en)
French (fr)
Inventor
康献兵
Original Assignee
昆山攀登电子科技有限公司
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Publication of WO2018205713A1 publication Critical patent/WO2018205713A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21—Devices for sensing speed or position, or actuated thereby
    • H02K11/215—Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/24—Devices for sensing torque, or actuated thereby
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

Definitions

  • the invention relates to the field of electric machines, in particular to an electric vehicle torque induction measuring type electric motor and an electric bicycle.
  • Electric bicycles refer to the use of batteries as auxiliary energy on the basis of ordinary bicycles, and the installation of motor, controller, battery, steering handles and other control components and display instrumentation system of mechatronics personal transport.
  • Objects of the present invention include, for example, an electric vehicle torque sensing measuring type motor that improves the deficiencies of the prior art, is simple in construction and assembly, and can detect torque.
  • It is also an object of the present invention to provide an electric bicycle comprising the above-described electric vehicle torque sensing measuring motor having all of the functions of the electric vehicle torque sensing measuring type motor.
  • An embodiment of the present invention provides an electric vehicle torque induction measuring type motor, comprising a motor shaft rod, a motor stator portion and a motor rotor portion sleeved on the motor shaft rod, and the motor rotor portion is connected with the first a bearing, the outer circumference of the motor shaft sleeve is provided with a torque sensing device, and the torque sensing device includes a fixing portion, a moving portion, a transition portion, and at least one configured to be installed between the fixed portion and the moving portion.
  • the fixing portion Measuring a force sensor of the relative displacement of the fixed portion and the moving portion, the fixing portion being coupled to the motor shaft, the moving portion and the motor rotor portion being connected by the first bearing, the fixing The moving portion is connected to the moving portion, and the motor rotor portion is connected to a load connecting portion, and the load connecting portion is disposed to be connected to an external force device or a member.
  • the force sensor includes a torque sensing Hall mounted on a fixed portion or a moving portion, and a torque sensing magnet mounted on the moving portion or the fixed portion, the torque The sensing Hall and the torque sensing magnet are oppositely arranged.
  • the fixing portion is provided with a torque sensing Hall mounting groove
  • the moving portion is provided with a torque induction magnet mounting slot
  • an opening of the torque sensing Hall mounting slot is opposite to an opening of the torque sensing magnet mounting slot
  • the torque sensing Hall is mounted in the torque sensing Hall mounting slot
  • the torque sensing magnet is mounted in the torque sensing magnet mounting slot.
  • the force sensor is a deformation sensing sensor, and the deformation sensing sensor is disposed at a transition portion of the torque sensing device.
  • the load connecting portion includes a flywheel
  • a stepping speed sensor is disposed between the motor stator portion and the load connecting portion
  • the assisting step speed sensor includes a speed sensing portion and a speed rotating portion
  • the speed The sensing portion is fixedly coupled to the stator portion of the motor
  • the speed rotating portion is made of a ferromagnetic material
  • the speed rotating portion is connected to a relative rotating portion of the flywheel, or the speed rotating portion is a sprocket of a flywheel.
  • the speed rotating portion includes a speed sensing disk and a speed sensing magnet, the speed sensing disk is connected to an end surface of the fly wheel, and the speed sensing magnet is mounted on the speed sensing disk.
  • the speed sensing portion is a speed sensing Hall
  • the moving portion, the fixing portion or the transition portion is further provided with a speed sensing Hall mounting slot, and the speed sensing Hall is located at the speed sensing The Hall is installed in the slot.
  • the load connecting portion includes a load connecting portion fixing portion, a load connecting portion relative rotating portion and a ratchet structure
  • the load connecting portion fixing portion is configured to be connected to the motor end cover
  • the load connecting portion is opposite to the rotating portion And being connected to the external force mechanism
  • the ratchet structure is respectively connected to the load connecting portion fixing portion and the load connecting portion relative to the rotating portion and located at the load connecting portion fixing portion and the load connecting portion relative rotating portion between.
  • the electric vehicle torque sensing measuring motor further includes a control main board and a signal output line, wherein the force sensor and the speed sensing unit are electrically connected to the control board, and the signal output line is electrically connected to the control board.
  • the control board is configured to receive a torque signal of the force sensor and a speed signal of the speed sensing portion and perform data processing, and output the processed signal via the signal output line.
  • the motor shaft has an outlet hole, and the signal output line is configured to pass through the outlet hole and extend to an outer side of the electric vehicle torque induction measuring motor.
  • the rotor portion of the motor includes a rotor magnetic steel portion, a motor housing and a motor end cover, the rotor magnetic steel portion is connected to the motor housing, and the motor end cover is connected to the motor housing and the A rotor magnetic steel portion is located inside the motor casing, the first bearing is coupled to the motor end cover, and the load connection portion is coupled to the motor end cover.
  • a second bearing groove is disposed inside the rotor portion of the motor, and the second bearing is installed in the second bearing groove.
  • a inner side of the motor end cover is provided with a first bearing groove, and the first bearing is installed in the first bearing groove.
  • the motor shaft bar has a stator mounting portion, a torque sensing device mounting portion and a second bearing mounting portion, and the outer circumference of the stator mounting portion is sleeved with the motor stator portion, and the torque sensing device mounting portion
  • the torque sensing device is sleeved on the outer circumference
  • the second bearing is sleeved on the outer circumference of the second bearing mounting portion, and the second bearing is configured to be connected to the motor housing.
  • stator mounting portion and the torque sensing device mounting portion form a first stepped surface
  • stator mounting portion and the second bearing mounting portion form a second stepped surface
  • An embodiment of the present invention also provides an electric bicycle comprising the above-mentioned electric vehicle torque induction measuring type motor having all the functions of the electric vehicle torque sensing measuring type motor.
  • Advantages of the electric vehicle torque sensing measuring motor of the present invention include, for example:
  • the torque measuring device In addition to integrating the torque measuring device in the motor, it also integrates a speed measuring device, which can simultaneously sense the torque signal and speed signal of the pedal, solves the single torque safety hazard, and greatly improves the comfort and safety of riding.
  • the whole vehicle outlet is simple, and the maintenance and replacement is more convenient.
  • 1 is a schematic view showing the assembly of an electric vehicle torque sensing measuring motor
  • Figure 2 is a schematic view of another angle of Figure 1;
  • FIG. 3 is a schematic exploded view of an electric vehicle torque sensing measuring motor
  • Figure 4 is a schematic view of another angle of Figure 3;
  • Figure 5 is an enlarged schematic view showing a portion of the structure of Figure 3;
  • Figure 6 is a schematic view of the assembly of Figure 5;
  • Figure 7 is an enlarged schematic view showing a portion of the structure of Figure 5;
  • Figure 8 is a schematic exploded view of the load connecting portion and the speed rotating portion
  • Figure 9 is a schematic view of the assembly of Figure 8.
  • Fig. 10 is a working principle diagram of an electric vehicle torque induction measuring type motor.
  • Icon 1-motor shaft stick; 11-stator mounting part; 12-torque sensing device mounting part; 13-outlet hole; 14-second bearing mounting part; 2-motor stator part; 20-motor rotor part; 3-motor Housing; 31-second bearing groove; 32-rotor magnetic steel part; 4-motor end cover; 41-first bearing groove; 5-first bearing; 6-torque sensing device; 61-fixing portion; 62-moving portion ; 63-transition; 64-torque induction Hall mounting slot; 65-torque induction magnet mounting slot; 66-speed sensing Hall mounting slot; 67-torque sensing Hall; 68-torque induction magnet; 69-speed induction 7-second bearing; 8-load connection; 80-foot plate; 801-chain; 81-flywheel; 82-speed induction disk; 83-speed induction magnet; 9-control board; 10-signal output line .
  • connection should be understood broadly, and may be fixed connection, for example, or may be The connection is disassembled or connected integrally; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be internal communication between the two elements.
  • the specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.
  • the present embodiment provides an electric vehicle torque induction measuring motor, which comprises a motor shaft rod 1 , a motor stator portion 2 and a motor rotor portion 20 which are sleeved on the motor shaft rod 1 and a motor.
  • the rotor portion 20 includes a rotor magnet portion 32, a motor casing 3, and a motor end cover 4.
  • the motor rotor portion 20 can also be other structures, such as a gear structure, a ratchet.
  • the rotor magnet portion 32 is directly connected to the motor casing 3 or connected by other structures, such as a gear structure.
  • the motor shaft 1 has a stator mounting portion 11, a torque sensing device mounting portion 12, an outlet hole 13 and a second bearing mounting portion 14.
  • the stator mounting portion 11 and the torque sensing device mounting portion 12 form a first stepped surface
  • the stator mounting portion 11 and the second bearing mounting portion 14 form a second stepped surface
  • the outer periphery of the stator mounting portion 11 is sleeved with the motor stator portion 2, and the torque sensing
  • the outer circumference of the device mounting portion 12 is sleeved with a torque sensing device 6.
  • the outer circumference of the torque sensing device 6 is sleeved with a first bearing 5, the first bearing 5 is connected to the motor end cover 4, and the inner end of the motor end cover 4 is provided with a first bearing.
  • the groove 41, the first bearing 5 is mounted in the first bearing groove 41.
  • a second bearing 7 is sleeved on the outer circumference of the second bearing mounting portion 14, and a second bearing groove 31 is provided inside the motor housing 3, and the second bearing 7 is mounted in the second bearing groove 31.
  • the torque sensing device 6 includes a fixing portion 61, a moving portion 62, a transition portion 63, and at least one force disposed between the fixed portion 61 and the moving portion 62 to sense the relative displacement of the fixed portion 61 and the moving portion 62. sensor.
  • the fixing portion 61 is connected to the motor shaft 1 and the moving portion 62 is connected to the motor rotor portion 20 via the first bearing 5. Specifically, the moving portion 62 is connected to the inner circumference of the first bearing 5, and the fixing portion 61 and the moving portion 62 pass. The transition portion 63 is connected.
  • the force sensor includes a torque sensing Hall 67 and a torque sensing magnet 68.
  • the fixing portion 61 is provided with a torque sensing Hall mounting groove 64
  • a torque sensing Hall mounting groove 64 is provided with a torque sensing Hall 67
  • the moving portion 62 is provided with a torque sensing.
  • the magnet mounting groove 65 is provided with a torque induction magnet 68 in the torque induction magnet mounting groove 65
  • the torque sensing Hall 67 is disposed opposite to the torque sensing magnet 68.
  • the torque sensing Hall 67 may be disposed on the moving portion 62, and the torque sensing magnet 68 may be disposed on the fixed portion 61 as long as the torque sensing Hall 67 and the torque sensing magnet 68 are relatively moved.
  • the force sensor may also be a deformation sensing sensor that is mounted on the transition portion 63. The generated moment is detected by detecting the deformation of the transition portion 63.
  • a control current I is applied across the semiconductor wafer, and a uniform magnetic field having a magnetic induction intensity B is applied in the vertical direction of the sheet, and a potential difference is generated in a direction perpendicular to the current and the magnetic field.
  • Hall voltage of uH is applied across the semiconductor wafer, and a uniform magnetic field having a magnetic induction intensity B is applied in the vertical direction of the sheet, and a potential difference is generated in a direction perpendicular to the current and the magnetic field.
  • the Hall voltage changes with the change of the magnetic field strength.
  • the magnetic field detected by the force sensor changes, thereby converting the strength of the magnetic field into the level of the voltage, thereby outputting an electric signal, and by signal processing, the corresponding generated torque can be generated. Detected.
  • the motor end cover 4 is connected to the load connecting portion 8
  • the load connecting portion 8 is connected to an external force device or component
  • the load connecting portion 8 drives the motor rotor portion 20 to rotate
  • the load connecting portion 8 is a flywheel.
  • the assisting step speed sensor is divided into a speed sensing portion and a speed rotating portion
  • the speed sensing portion is fixed to the motor stator portion 2
  • the speed rotating portion Made of ferromagnetic material
  • the speed rotating portion is connected to the relative rotating portion of the flywheel directly or through other structures, or the speed rotating portion is a sprocket of the flywheel.
  • the speed rotating portion includes a speed sensing disk 82 and a speed sensing magnet 83.
  • the speed sensing disk 82 is connected to the end surface of the flywheel 81, and the speed sensing magnet 83 is mounted on the speed sensing disk 82.
  • the speed sensing portion is a speed sensing Hall 69
  • the moving portion 62 is further provided with a speed sensing Hall mounting groove 66
  • the speed sensing Hall mounting groove 66 is provided with a speed sensing Hall 69.
  • the speed sensing portion may be other electromagnetic or capacitive sensing elements.
  • the speed sensing Hall mounting groove 66 may also be disposed on the fixed portion 61 or the transition portion 63.
  • the electric vehicle torque induction measuring motor further includes a control main board 9 and a signal output line 10, the force sensor and the speed sensing unit are electrically connected to the control main board 9, and the signal output line 10 is electrically connected with the control main board 9, and the signal output is
  • the wire 10 extends through the outlet opening 13 to the outside of the electric vehicle torque sensing measuring motor.
  • the torque signal and the speed signal sensed by the torque sensing Hall 67 and the speed sensing Hall 69 are received by the control board and processed for data, and then output through the signal output line 10.
  • the load connecting portion 8 includes a load connecting portion fixing portion, a load connecting portion relative rotating portion, and a ratchet structure, the load connecting portion fixing portion is disposed to be coupled to the motor end cover 4, and the load connecting portion is disposed to be coupled to the external force mechanism with respect to the rotating portion, the ratchet
  • the structural body is connected to the load connecting portion fixing portion and the load connecting portion to the rotating portion, respectively, and between the load connecting portion fixing portion and the load connecting portion and the rotating portion.
  • the working principle of the invention is that when the bicycle is riding, the user drives the pedal 80 to rotate by the pedal, and the pedal 80 drives the load connection portion 8 to rotate through the chain 801. At this time, the load connection portion is caused by the external force of the chain 801. 8 generates a circumferential pulling force, because the load connecting portion 8 is mounted on the motor end cover 4, so that the motor end cover 4 is displaced, thereby driving the first bearing 5 fixed thereto to generate displacement, thereby driving the torque connected with the first bearing 5
  • the moving portion 62 of the sensing device is displaced relative to the fixed portion 61.
  • the torque sensing Hall 67 senses the displacement of the torque sensing magnet 68 to calculate the moment the user is pedaling.
  • the speed sensing Hall 69 located on the torque sensing device 6 calculates the rotation of the rotating body of the load connecting portion 8 having the ferromagnetic material, and counts the number of teeth of the pedal toothed disc and the flywheel to calculate the human body to the electric motor.
  • the pedal of the car helps to step on the speed.
  • the embodiment provides an electric bicycle including the above-described electric vehicle torque induction measuring type motor.
  • Embodiment 1 For the structure of the electric vehicle torque induction measuring type motor, reference may be made to Embodiment 1, which has all the functions of the electric vehicle torque sensing measuring type motor.
  • FIG. 1 and 2 there are shown structural schematics of two different viewing angles of an electric vehicle torque sensing measuring motor.
  • the electric vehicle torque sensing measuring motor includes a motor shaft rod 1, a motor stator portion 2 and a motor rotor portion 20, and the motor stator portion 2 is sleeved and fixed on the motor shaft rod 1.
  • the motor rotor portion 20 includes a rotor magnet portion 32, a motor casing 3, and a motor end cover 4, and the rotor magnet portion 32 is connected to the motor casing 3, and after the motor end cover 4 is mounted on the motor casing 3, the rotor magnet portion 32 is located The inside of the motor housing 3.
  • a second bearing groove 31 is disposed inside the motor housing 3, and a second bearing 7 is mounted in the second bearing groove 31, and the second bearing 7 is mounted on the motor shaft 1.
  • a control main board 9 and a torque sensing device 6 are also mounted on the motor shaft stick 1, and the torque sensing device 6 is mounted on the motor end cover 4 via the first bearing 5.
  • the motor end cover 4 is provided with a first bearing groove 41, and the first bearing 5 is installed in the first bearing groove 41.
  • the load connection portion 8 is mounted on the motor end cover 4.
  • the motor shaft 1 is provided with a stator mounting portion 11, a torque sensing device mounting portion 12, an outlet hole 13 and a second bearing mounting portion 14.
  • the stator mounting portion 11 is configured to mount the motor stator portion 2; the torque sensing device mounting portion 12 is configured to mount the torque sensing device 6; the outlet hole 13 is configured to pass the signal output line 10, one end of the signal output line 10 and the above-described torque sensing
  • the device 6 is electrically connected to the control board 9, the other end of the signal output line 10 extends to the outside of the motor casing 3, and the second bearing mounting portion 14 is configured to mount the second bearing 7.
  • the torque sensing device 6 includes a fixed portion 61, a transition portion 63, a moving portion 62, a torque sensing Hall 67, a torque sensing magnet 68, and a speed sensing Hall 69.
  • the fixing portion 61 is attached to the torque sensing device mounting portion 12, and the fixing portion 61 is fixed to the motor shaft stick 1.
  • the fixing portion 61 and the moving portion 62 are connected by a transition portion 63.
  • the fixing portion 61 is located at a center position of the moving portion 62.
  • the moving portion 62 is mounted on the motor end cover 4 via the first bearing 5, and the moving portion 62 is rotatably connected to the motor end cover 4. .
  • the fixed portion 61 is provided with a torque sensing Hall mounting groove 64 configured to mount the torque sensing Hall 67
  • the moving portion 62 is provided with a torque sensing magnet configured to mount the torque sensing magnet 68.
  • the groove 65 is mounted, and the openings of the two grooves correspond, so that the torque sensing Hall 67 corresponds to the torque sensing magnet 68.
  • the moving portion 62 is also provided with a speed sensing Hall mounting groove 66 configured to mount the speed sensing Hall 69. Similarly, one end of the signal output line 10 described above is electrically connected to the speed sensing Hall 69.
  • the load connecting portion 8 includes a flywheel 81, a speed sensing disk 82, and a speed sensing magnet 83.
  • the speed sensing magnet 83 is mounted on the speed sensing disk 82, and the speed sensing disk 82 is connected to the end surface of the flywheel 81.
  • the pedal 80 and the load connecting portion 8 are connected by a chain 801, and when the pedal 80 is rotated, the load connecting portion 8 is rotated.
  • the present invention provides an electric vehicle torque induction measuring type motor, which has a simple structure, a simple assembly process, high detection precision, and low cost.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

本发明提供了一种电动车力矩感应测量式电机及电动自行车，电动车力矩感应测量式电机包括电机轴棍、套设在电机轴棍上的电机定子部和电机转子部，电机转子部连接有第一轴承，电机轴棍的外周套设有力矩感应装置，力矩感应装置包括固定部、移动部、过渡部以及安装在固定部和移动部之间的至少一个配置成感测固定部和移动部相对位移的力传感器，固定部连接在电机轴棍上，移动部与电机转子部通过第一轴承连接，固定部和移动部通过过渡部连接，电机转子部连接有负载连接部，负载连接部配置成与外力装置或部件连接。电机内集成力矩测量装置，可以感应脚踏的力矩信号，提高了骑行的舒适度，出线简单、维修更换方便。

Description

一种电动车力矩感应测量式电机及电动自行车
相关申请的交叉引用
本申请要求于2017年05月10日提交中国专利局的申请号为201710325824.X、名称为“一种电动车力矩感应测量式电机”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及电机领域，尤其是涉及一种电动车力矩感应测量式电机及电动自行车。
背景技术
电动自行车，是指以蓄电池作为辅助能源在普通自行车的基础上，安装了电机、控制器、蓄电池、转把闸把等操纵部件和显示仪表系统的机电一体化的个人交通工具。
发明人在研究中发现：现有技术中，电动自行车绝大多传感器都是独立部件，如中轴式力矩、钩爪式力矩、磁盘式力矩，这些分体式传感器对整车来说，结构和装配都很复杂，各个部件安装于整车的不同部位，这种方案影响整车整洁、安装繁琐、线路外漏走线长，售后麻烦，存在安全隐患。
发明内容
本发明的目的包括，例如，提供了一种电动车力矩感应测量式电机，改善现有技术的不足，其结构和装配简单，还可检测力矩。
本发明的目的还包括，提供了一种电动自行车，其包括上述的电动车力矩感应测量式电机，其具有该电动车力矩感应测量式电机的全部功能。
本发明的实施例是这样实现的：
本发明的实施例提供了一种电动车力矩感应测量式电机，其包括电机轴棍、套设在所述电机轴棍上的电机定子部和电机转子部，所述电机转子部连接有第一轴承，所述电机轴棍的外周套设有力矩感应装置，所述力矩感应装置包括固定部、移动部、过渡部以及安装在所述固定部和所述移动部之间的至少一个配置成感测所述固定部和所述移动部相对位移的力传感器，所述固定部连接在所述电机轴棍上，所述移动部与所述电机转子部通过所述第一轴承连接，所述固定部和所述移动部通过所述过渡部连接，所述电机转子部连接有负载连接部，所述负载连接部配置成与外力装置或部件连接。
可选的，所述力传感器包括力矩感应霍尔和力矩感应磁石，所述力矩感应霍尔安装在固定部或移动部上，所述力矩感应磁石安装在移动部或固定部上，所述力矩感应霍尔和力矩感应磁石相对设置。
可选的，所述固定部设置有力矩感应霍尔安装槽，所述移动部设置有力矩感应磁石安装槽，所述力矩感应霍尔安装槽的开口与所述力矩感应磁石安装槽的开口相对设置，所述力矩感应霍尔安装于所述力矩感应霍尔安装槽内，所述力矩感应磁石安装于所述力矩感应磁石安装槽内。
可选的，所述力传感器为形变感应传感器，所述形变感应传感器设置于所述力矩感应装置的过渡部。
可选的，所述负载连接部包括飞轮，所述电机定子部和所述负载连接部之间设有助踩速度传感器，所述助踩速度传感器包括速度感应部和速度旋转部，所述速度感应部固定连接于所述电机定子部，所述速度旋转部采用铁磁性材料制成，所述速度旋转部连接于所述飞轮的相对旋转部，或者所述速度旋转部为飞轮的链齿。
可选的，所述速度旋转部包括速度感应盘和速度感应磁石，所述速度感应盘与所述飞轮的端面连接，所述速度感应磁石安装在所述速度感应盘上。
可选的，所述速度感应部为速度感应霍尔，所述移动部、所述固定部或所述过渡部还设有速度感应霍尔安装槽，所述速度感应霍尔位于所述速度感应霍尔安装槽内。
可选的，所述负载连接部包括负载连接部固定部、负载连接部相对旋转部和棘轮结构体，所述负载连接部固定部配置成与电机端盖连接，所述负载连接部相对旋转部配置成与外力机构连接，所述棘轮结构体分别与所述负载连接部固定部和所述负载连接部相对旋转部连接且位于所述负载连接部固定部和所述负载连接部相对旋转部之间。
可选的，所述电动车力矩感应测量式电机还包括控制主板和信号输出线，所述力传感器和所述速度感应部电气连接控制主板，所述信号输出线与所述控制主板电气连接，所述控制主板配置成接收所述力传感器的力矩信号和所述速 度感应部的速度信号并进行数据处理，且将处理后的信号经由所述信号输出线进行输出。
可选的，所述电机轴棍具有出线孔，所述信号输出线配置成穿过所述出线孔且延伸至所述电动车力矩感应测量式电机的外侧。
可选的，所述电机转子部包括转子磁钢部、电机外壳及电机端盖，所述转子磁钢部与所述电机外壳连接，所述电机端盖与所述电机外壳连接且使所述转子磁钢部位于所述电机外壳的内部，所述第一轴承与所述电机端盖连接，所述负载连接部与所述电机端盖连接。
可选的，所述电机转子部的内部设有第二轴承槽，所述第二轴承安装在所述第二轴承槽内。
可选的，所述电机端盖的内侧设有第一轴承槽，所述第一轴承安装在所述第一轴承槽内。
可选的，所述电机轴棍具有定子安装部、力矩感应装置安装部和第二轴承安装部，所述定子安装部的外周套设有所述电机定子部，所述力矩感应装置安装部的外周套设有所述力矩感应装置，所述第二轴承安装部的外周套设有第二轴承，所述第二轴承配置成与电机外壳连接。
可选的，所述定子安装部和所述力矩感应装置安装部形成第一台阶面，所述定子安装部和所述第二轴承安装部形成第二台阶面。
本发明的实施例还提供了一种电动自行车，其包括上述提到的电动车力矩 感应测量式电机，其具有该电动车力矩感应测量式电机的全部功能。
与现有技术相比，本发明电动车力矩感应测量式电机的有益效果包括，例如：
除了在电机内集成力矩测量装置外，其还集成了速度测量装置，可以同时感应脚踏的力矩信号和速度信号，解决了单一力矩安全隐患，大大提高了骑行的舒适度和安全性，同时整车出线简单，维修更换更方便。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本发明的某些实施例，因此不应被看作是对范围的限定，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他相关的附图。
图1是电动车力矩感应测量式电机的装配示意图；
图2是图1另一角度的示意图；
图3是电动车力矩感应测量式电机的爆炸示意图；
图4是图3另一角度的示意图；
图5是图3部分结构的放大示意图；
图6是图5的装配示意图；
图7是图5部分结构的放大示意图；
图8是负载连接部与速度旋转部的爆炸示意图；
图9是图8的装配示意图；
图10是电动车力矩感应测量式电机的工作原理图。
图标：1-电机轴棍；11-定子安装部；12-力矩感应装置安装部；13-出线孔；14-第二轴承安装部；2-电机定子部；20-电机转子部；3-电机外壳；31-第二轴承槽；32-转子磁钢部；4-电机端盖；41-第一轴承槽；5-第一轴承；6-力矩感应装置；61-固定部；62-移动部；63-过渡部；64-力矩感应霍尔安装槽；65-力矩感应磁石安装槽；66-速度感应霍尔安装槽；67-力矩感应霍尔；68-力矩感应磁石；69-速度感应霍尔；7-第二轴承；8-负载连接部；80-脚踏盘；801-链条；81-飞轮；82-速度感应盘；83-速度感应磁石；9-控制主板；10-信号输出线。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。通常在此处附图中描述和示出的本发明实施例的组件可以以各种不同的配置来布置和设计。
因此，以下对在附图中提供的本发明的实施例的详细描述并非旨在限制要求保护的本发明的范围，而是仅仅表示本发明的选定实施例。基于本发明中的 实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步定义和解释。
在本发明的描述中，需要说明的是，术语“中心”、“上”、“下”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，或者是该发明产品使用时惯常摆放的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
此外，术语“第一”、“第二”等仅用于区分描述，而不能理解为指示或暗示相对重要性。
在本发明的描述中，还需要说明的是，除非另有明确的规定和限定，术语“设置”、“安装”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
实施例1
请参阅图1至图10，本实施例提供了一种电动车力矩感应测量式电机， 其包括电机轴棍1、套设在电机轴棍1上的电机定子部2和电机转子部20，电机转子部20包括转子磁钢部32、电机外壳3及电机端盖4。
其他实施例中，电机转子部20也可为其他结构体，如齿轮结构、棘轮。转子磁钢部32与电机外壳3直接连接或通过其他结构连接，如齿轮结构。
结合图3-图6，电机轴棍1具有定子安装部11、力矩感应装置安装部12、出线孔13和第二轴承安装部14。
定子安装部11和力矩感应装置安装部12形成第一台阶面，定子安装部11和第二轴承安装部14形成第二台阶面，定子安装部11的外周套设有电机定子部2，力矩感应装置安装部12的外周套设有力矩感应装置6，力矩感应装置6的外周套设有第一轴承5，第一轴承5与电机端盖4连接，电机端盖4的内侧设有第一轴承槽41，第一轴承5安装在第一轴承槽41内。
第二轴承安装部14的外周套设有第二轴承7，电机外壳3的内侧设有第二轴承槽31，第二轴承7安装在第二轴承槽31内。
结合图7，力矩感应装置6包括固定部61、移动部62、过渡部63以及安装在固定部61和移动部62之间的至少一个配置成感测固定部61和移动部62相对位移的力传感器。
固定部61连接在电机轴棍1上，移动部62与电机转子部20通过第一轴承5连接，具体的，移动部62与第一轴承5的内周连接，固定部61和移动部62通过过渡部63连接。
力传感器包括力矩感应霍尔67和力矩感应磁石68，固定部61设有力矩感应霍尔安装槽64，力矩感应霍尔安装槽64内设有力矩感应霍尔67，移动部62设有力矩感应磁石安装槽65，力矩感应磁石安装槽65内设有力矩感应磁石68，力矩感应霍尔67与力矩感应磁石68相对设置。
在其他实施例中，力矩感应霍尔67可以设在移动部62上，而力矩感应磁石68可以设在固定部61上，只要力矩感应霍尔67与力矩感应磁石68有相对移动即可。
同理，其他实施例中，力传感器还可以为形变感应传感器，其安装在过渡部63上。通过检测过渡部63的形变，从而检测产生的力矩。
由霍尔效应的原理可知，在半导体薄片两端通以控制电流I，并在薄片的垂直方向施加磁感应强度为B的匀强磁场，则在垂直于电流和磁场的方向上，将产生电势差为uH的霍尔电压。
磁场中有一个霍尔半导体片，恒定电流I从A到B通过该片。在洛仑兹力的作用下，I的电子流在通过霍尔半导体时向一侧偏移，使该片在CD方向上产生电位差，这就是所谓的霍尔电压。
霍尔电压随磁场强度的变化而变化，磁场越强，电压越高，磁场越弱，电压越低，霍尔电压值很小，通常只有几个毫伏，但经集成电路中的放大器放大，就能使该电压放大到足以输出较强的信号。
因此，当固定部61和移动部62产生位移后，力传感器检测到的磁场发生改变，从而将磁场的强弱转化为电压的高低，从而输出电信号，通过信号处理， 可以将对应产生的力矩检测出来。
结合图3，图8和图9，电机端盖4连接有负载连接部8，负载连接部8与外力装置或部件进行连接，负载连接部8带动电机转子部20旋转，负载连接部8为飞轮或其他传动体，电机定子部2和负载连接部8之间设有助踩速度传感器，助踩速度传感器分为速度感应部和速度旋转部，速度感应部固定在电机定子部2，速度旋转部采用铁磁性材料制成，速度旋转部直接或者通过其他结构体连接在飞轮的相对旋转部上，或者速度旋转部为飞轮的链齿。
本实施例中，速度旋转部包括速度感应盘82和速度感应磁石83，速度感应盘82与飞轮81的端面连接，速度感应磁石83安装在速度感应盘82上。
本实施例中，速度感应部为速度感应霍尔69，移动部62还设有速度感应霍尔安装槽66，速度感应霍尔安装槽66内设有速度感应霍尔69。其他实施例中，速度感应部也可以是其他的电磁或电容感应元件。
其他实施例中，速度感应霍尔安装槽66也可以设置在固定部61或过渡部63上。
结合图3-图5，电动车力矩感应测量式电机还包括控制主板9和信号输出线10，力传感器和速度感应部电气连接控制主板9，信号输出线10与控制主板9电气连接，信号输出线10穿过出线孔13延伸至电动车力矩感应测量式电机外侧。力矩感应霍尔67、速度感应霍尔69感应到的力矩信号、速度信号被控制主板接收并进行数据处理，然后通过信号输出线10进行输出。
负载连接部8包括负载连接部固定部、负载连接部相对旋转部和棘轮结构 体，负载连接部固定部配置成与电机端盖4连接，负载连接部相对旋转部配置成与外力机构连接，棘轮结构体分别与负载连接部固定部和负载连接部相对旋转部连接且位于负载连接部固定部和负载连接部相对旋转部之间。
本发明的工作原理为：骑行时，用户通过登脚踏带动脚踏盘80转动，脚踏盘80通过链条801带动负载连接部8转动，此时由于链条801的外力牵引，使得负载连接部8产生周向拉力，由于负载连接部8安装在电机端盖4上，所以带动电机端盖4产生位移，进而带动与其固定的第一轴承5产生位移，进而带动与第一轴承5连接的力矩感应装置的移动部62相对于固定部61产生位移。
力矩感应霍尔67感应到力矩感应磁石68的位移，从而计算得出用户登脚踏的力矩。同时，位于力矩感应装置6上的速度感应霍尔69通过感应具有铁磁性材料的负载连接部8的旋转体的旋转，通过脚踏齿盘和飞轮的齿数比计数，从而计算得出人体对电动车的脚踏助踩速度。
实施例2
本实施例提供了一种电动自行车，其包括上述的电动车力矩感应测量式电机。
电动车力矩感应测量式电机的结构可以参考实施例1，该电动自行车具有电动车力矩感应测量式电机的所有功能。
附图实施例：
结合图1和图2，其展示了电动车力矩感应测量式电机的两种不同视角下 的结构示意图。
结合图3和图4，电动车力矩感应测量式电机包括电机轴棍1、电机定子部2和电机转子部20，电机定子部2套设固定在电机轴棍1上。
电机转子部20包括转子磁钢部32、电机外壳3和电机端盖4，转子磁钢部32与电机外壳3连接，电机端盖4安装在电机外壳3上后，使转子磁钢部32位于电机外壳3的内部。
电机外壳3的内侧设置有第二轴承槽31，第二轴承槽31内安装有第二轴承7，第二轴承7安装在电机轴棍1上。
电机轴棍1上还安装有控制主板9和力矩感应装置6，力矩感应装置6通过第一轴承5安装在电机端盖4上。具体的，电机端盖4上设置有第一轴承槽41，第一轴承5安装在第一轴承槽41内。
负载连接部8安装在电机端盖4上。
结合图5和图6，具体的，电机轴棍1上设置有定子安装部11、力矩感应装置安装部12、出线孔13和第二轴承安装部14。
定子安装部11配置成安装电机定子部2；力矩感应装置安装部12配置成安装力矩感应装置6；出线孔13配置成使信号输出线10穿过，信号输出线10的一端与上述的力矩感应装置6和控制主板9电连接，信号输出线10的另一端延伸至电机外壳3的外部；第二轴承安装部14配置成安装第二轴承7。
结合图7，具体的，力矩感应装置6包括固定部61、过渡部63、移动部62、力矩感应霍尔67、力矩感应磁石68和速度感应霍尔69。
固定部61装配在力矩感应装置安装部12上，固定部61与电机轴棍1相 对固定。
固定部61与移动部62通过过渡部63连接，固定部61位于移动部62的中心位置，移动部62通过第一轴承5装配在电机端盖4上，移动部62与电机端盖4转动连接。
固定部61和移动部62之间具有空间，固定部61设置有配置成安装力矩感应霍尔67的力矩感应霍尔安装槽64，移动部62设置有配置成安装力矩感应磁石68的力矩感应磁石安装槽65，两个槽的开口对应，这样力矩感应霍尔67与力矩感应磁石68相对应。
移动部62还设置有速度感应霍尔安装槽66，速度感应霍尔安装槽66配置成安装速度感应霍尔69。同理，上述的信号输出线10的一端与该速度感应霍尔69电连接。
结合图8和图9，负载连接部8包括飞轮81、速度感应盘82和速度感应磁石83，速度感应磁石83安装在速度感应盘82上，速度感应盘82与飞轮81的端面连接。
结合图10，脚踏盘80和负载连接部8通过链条801实现传动连接，脚踏盘80转动时，带动负载连接部8转动。
需要说明的是，在不冲突的情况下，本发明的实施例中的特征可以相互结合。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
工业实用性：
综上所述，本发明提供了一种电动车力矩感应测量式电机，其结构简单，装配过程简单，检测精度高，造价低。

Claims (16)

  1. 一种电动车力矩感应测量式电机，包括电机轴棍、套设在所述电机轴棍上的电机定子部和电机转子部，其特征在于：所述电机转子部连接有第一轴承，所述电机轴棍的外周套设有力矩感应装置，所述力矩感应装置包括固定部、移动部、过渡部以及安装在所述固定部和所述移动部之间的至少一个配置成感测所述固定部和所述移动部相对位移的力传感器，所述固定部连接在所述电机轴棍上，所述移动部与所述电机转子部通过所述第一轴承连接，所述固定部和所述移动部通过所述过渡部连接，所述电机转子部连接有负载连接部，所述负载连接部配置成与外力装置或部件连接。
  2. 根据权利要求1所述的电动车力矩感应测量式电机，其特征在于：所述力传感器包括力矩感应霍尔和力矩感应磁石，所述力矩感应霍尔安装在固定部或移动部上，所述力矩感应磁石安装在移动部或固定部上，所述力矩感应霍尔和力矩感应磁石相对设置。
  3. 根据权利要求2所述的电动车力矩感应测量式电机，其特征在于：所述固定部设置有力矩感应霍尔安装槽，所述移动部设置有力矩感应磁石安装槽，所述力矩感应霍尔安装槽的开口与所述力矩感应磁石安装槽的开口相对设置，所述力矩感应霍尔安装于所述力矩感应霍尔安装槽内，所述力矩感应磁石安装于所述力矩感应磁石安装槽内。
  4. 根据权利要求1所述的电动车力矩感应测量式电机，其特征在于：所述力传感器为形变感应传感器，所述形变感应传感器设置于所述力矩感应装置 的过渡部。
  5. 根据权利要求1-4任一项所述的电动车力矩感应测量式电机，其特征在于：所述负载连接部包括飞轮，所述电机定子部和所述负载连接部之间设有助踩速度传感器，所述助踩速度传感器包括速度感应部和速度旋转部，所述速度感应部固定连接于所述电机定子部，所述速度旋转部采用铁磁性材料制成，所述速度旋转部连接于所述飞轮的相对旋转部，或者所述速度旋转部为飞轮的链齿。
  6. 根据权利要求5所述的电动车力矩感应测量式电机，其特征在于：所述速度旋转部包括速度感应盘和速度感应磁石，所述速度感应盘与所述飞轮的端面连接，所述速度感应磁石安装在所述速度感应盘上。
  7. 根据权利要求5或6所述的电动车力矩感应测量式电机，其特征在于：所述速度感应部为速度感应霍尔，所述移动部、所述固定部或所述过渡部还设有速度感应霍尔安装槽，所述速度感应霍尔位于所述速度感应霍尔安装槽内。
  8. 根据权利要求5-7任一项所述的电动车力矩感应测量式电机，其特征在于：所述负载连接部包括负载连接部固定部、负载连接部相对旋转部和棘轮结构体，所述负载连接部固定部配置成与电机端盖连接，所述负载连接部相对旋转部配置成与外力机构连接，所述棘轮结构体分别与所述负载连接部固定部和所述负载连接部相对旋转部连接且位于所述负载连接部固定部和所述负载连接部相对旋转部之间。
  9. 根据权利要求5-8任一项所述的电动车力矩感应测量式电机，其特征 在于：所述电动车力矩感应测量式电机还包括控制主板和信号输出线，所述力传感器和所述速度感应部电气连接控制主板，所述信号输出线与所述控制主板电气连接，所述控制主板配置成接收所述力传感器的力矩信号和所述速度感应部的速度信号并进行数据处理，且将处理后的信号经由所述信号输出线进行输出。
  10. 根据权利要求9所述的电动车力矩感应测量式电机，其特征在于：所述电机轴棍具有出线孔，所述信号输出线配置成穿过所述出线孔且延伸至所述电动车力矩感应测量式电机的外侧。
  11. 根据权利要求1-10任一项所述的电动车力矩感应测量式电机，其特征在于：所述电机转子部包括转子磁钢部、电机外壳及电机端盖，所述转子磁钢部与所述电机外壳连接，所述电机端盖与所述电机外壳连接且使所述转子磁钢部位于所述电机外壳的内部，所述第一轴承与所述电机端盖连接，所述负载连接部与所述电机端盖连接。
  12. 根据权利要求11所述的电动车力矩感应测量式电机，其特征在于：所述电机转子部的内部设有第二轴承槽，所述第二轴承安装在所述第二轴承槽内。
  13. 根据权利要求11所述的电动车力矩感应测量式电机，其特征在于：所述电机端盖的内侧设有第一轴承槽，所述第一轴承安装在所述第一轴承槽内。
  14. 根据权利要求1-13任一项所述的电动车力矩感应测量式电机，其特 征在于：所述电机轴棍具有定子安装部、力矩感应装置安装部和第二轴承安装部，所述定子安装部的外周套设有所述电机定子部，所述力矩感应装置安装部的外周套设有所述力矩感应装置，所述第二轴承安装部的外周套设有第二轴承，所述第二轴承配置成与电机外壳连接。
  15. 根据权利要求14所述的电动车力矩感应测量式电机，其特征在于：所述定子安装部和所述力矩感应装置安装部形成第一台阶面，所述定子安装部和所述第二轴承安装部形成第二台阶面。
  16. 一种电动自行车，其特征在于，包括权利要求1-15任一项所述的电动车力矩感应测量式电机。
PCT/CN2018/077239 2017-05-10 2018-02-26 一种电动车力矩感应测量式电机及电动自行车 WO2018205713A1 (zh)

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