JP2015071404A - Bicycle equipped with electric motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bicycle equipped with an electric motor capable of reporting each state that occurs according to each of a plurality of functions equipped to one's own vehicle.SOLUTION: The bicycle equipped with an electric motor includes an operation/display part 180 having a state display part on a display surface which, when any one of a first state in which an abnormality is detected in one's own vehicle, a second state in which a battery 110 is charged, and a third state in which power consumption in each electrical component is restricted occurs, performs display corresponding to the state that has occurred, and which, when at least two states of the first state, the second state, and the third state occur simultaneously, performs display corresponding to the state with the highest priority of the at least two states that have occurred simultaneously.

Description

  The present invention relates to a bicycle with an electric motor including a motor that generates an auxiliary driving force.

  A motor-equipped bicycle that generates an auxiliary driving force having a magnitude corresponding to a pedaling force applied to a pedal and drives a wheel by the auxiliary driving force, and has a display means for displaying the state of the host vehicle. Are known.

  For example, in Patent Document 1, when a decrease in battery voltage is detected, the operation state of the motor is changed to vary the assist force, and the blinking mode of the display device is made different depending on the degree of decrease in the battery voltage. A motorized bicycle is described.

  Moreover, in patent document 2, in the bicycle with an electric motor provided with the battery side indicator and the vehicle side indicator, when switching to the failure diagnosis mode, each indicator is based on the display pattern set in advance by the abnormal item. It is described that the indicator lamp is turned on.

  Patent Document 3 discloses a voltage detection means for detecting a battery voltage, a failure diagnosis means for self-diagnosis for the presence or absence of a system abnormality, a voltage drop warning display or a fault warning display when a voltage drop signal or a fault signal is input. There is described a bicycle with an electric motor provided with a warning display control means for performing the above and an abnormality warning priority display means for preferentially displaying a failure warning display when the voltage drop signal and the failure signal are input in duplicate. .

Japanese Patent Application Laid-Open No. 08-058667 JP 2001-122180 A Japanese Patent Laid-Open No. 08-142967

  In recent years, bicycles with electric motors have been improved in functionality, and various states are exhibited by operating a plurality of equipped functions. Therefore, it is considered that convenience is enhanced by notifying the user of each state that occurs based on each of a plurality of functions equipped on the host vehicle.

  Then, an object of this invention is to provide the bicycle with an electric motor which can alert | report each state which arises based on each of the some function with which the own vehicle was equipped.

  According to the first aspect of the present invention, an auxiliary driving force having a magnitude corresponding to the pedaling force applied to the pedal is generated by the motor, and the wheel is driven by the auxiliary driving force, and electric power is supplied to the motor. , An abnormality detecting means for detecting an abnormality occurring in the host vehicle, a regenerative charging means for regeneratively charging the battery with electric power generated by the rotation of the motor, and the battery when a predetermined condition is satisfied Power consumption limiting means for limiting power consumption in each electrical component that receives power supply from the power supply, a first state in which an abnormality is detected by the abnormality detection means, and the battery is regeneratively charged by the regenerative charging means Any one state of the second state and the third state in which the power consumption in each electrical component is restricted by the power consumption restriction means When a situation occurs, a display corresponding to the produced state is performed, and when at least two of the first state, the second state, and the third state occur simultaneously, There is provided a bicycle with an electric motor including state display means for performing display corresponding to a state having the highest priority among the at least two states generated simultaneously.

  According to the second aspect of the present invention, it further includes auxiliary driving force limiting means for limiting the magnitude of the auxiliary driving force according to the temperature detected at at least one location in the host vehicle, and the state display means includes: When the fourth state in which the magnitude of the auxiliary driving force is limited by the auxiliary driving force limiting unit occurs independently, the display corresponding to the fourth state is performed, and the first state, When at least two of the second state, the third state, and the fourth state occur at the same time, it corresponds to the highest priority state among the at least two states that occurred at the same time An electric bicycle according to a first aspect for performing display is provided.

  According to a third aspect of the present invention, there is provided the electric bicycle according to the second aspect, wherein the state display means includes a light emitting portion that emits light in a different manner corresponding to each of the first to fourth states. Is done.

  According to a fourth aspect of the present invention, there is provided the electric bicycle according to the third aspect, wherein the light emitting unit identifies and displays the first to fourth states based on a light emission color or a combination of the light emission color and blinking. Is done.

  According to a fifth aspect of the present invention, the apparatus further includes a remaining amount display means for displaying the remaining amount of the battery, and the remaining amount display means is detected when an abnormality is detected by the abnormality detection means. A motor-equipped bicycle according to any one of the first to fourth aspects for displaying the type of abnormality is provided.

  According to a sixth aspect of the present invention, the remaining amount display means includes a plurality of light emitting units, and when displaying the remaining amount of the battery, the number of light emitting units corresponding to the remaining amount of the battery is turned on. And when displaying the kind of abnormality detected by the above-mentioned abnormality detection means, the bicycle with an electric motor by the 5th mode in which the light emission part of the position according to the kind of detected abnormality emits light is provided.

  According to a seventh aspect of the present invention, there is provided the electric motor according to the sixth aspect, further comprising a display unit having a light emitting unit constituting the state display unit and a plurality of light emitting units constituting the remaining amount display unit on a display surface. A bicycle is provided.

  According to an eighth aspect of the present invention, the apparatus further includes an operation unit that receives an operation input, and the remaining amount display unit performs a predetermined operation on the operation unit when an abnormality is detected by the abnormality detection unit. Sometimes, a bicycle with an electric motor according to any of the fifth to seventh aspects that displays the type of detected abnormality is provided.

  According to the ninth aspect of the present invention, the light emitting unit constituting the state display unit and the plurality of light emitting units constituting the remaining amount display unit are arranged in a line on the display surface. An electric bicycle according to an aspect is provided.

  According to a tenth aspect of the present invention, the light emitting section constituting the state display means has a shape or size different from each of the plurality of light emitting sections constituting the remaining amount display means. A bicycle with an electric motor according to any one of the aspects is provided.

  ADVANTAGE OF THE INVENTION According to this invention, the bicycle with an electric motor which can alert | report each state produced based on each of the some function with which the own vehicle was equipped is provided.

It is a side view showing the composition of the bicycle with an electric motor concerning the embodiment of the present invention. It is a block diagram which shows the structure of the electric system of the bicycle with an electric motor which concerns on embodiment of this invention. It is a figure which shows the connection relation of the battery which concerns on embodiment of this invention, a motor drive part, and a motor in detail. 4A is a plan view showing the configuration of the operation / display unit according to the embodiment of the present invention, and FIG. 4B is a block diagram showing the configuration of the electrical system of the operation / display unit according to the embodiment of the present invention. It is. It is a figure which shows an example of a response | compatibility with the battery remaining charge which concerns on embodiment of this invention, and the display mode in a battery remaining charge display part. It is a figure which shows a response | compatibility with the various functions which the main-control part which concerns on embodiment of this invention has, a battery residual amount display part, an assist mode display part, a light lighting display part, and a status display part. It is a figure which shows a response | compatibility with the state of the bicycle with an electric motor which concerns on embodiment of this invention, and the display mode in a state display part. It is the figure which illustrated correspondence with the kind of abnormality detected in the main control part concerning the embodiment of the present invention, and the display mode in a battery residual amount display part. It is a flowchart which shows the flow of a process in the display control program which concerns on embodiment of this invention. It is a flowchart which shows the flow of a process in the display control program which concerns on other embodiment of this invention.

  FIG. 1 is a side view showing a configuration of an electric bicycle 1 according to an embodiment of the present invention. The bicycle 1 with an electric motor has a frame including a front fork 11, a head pipe 12, a down tube 13, a seat tube 14, a seat stay 15, and a chain stay 16. The front wheel 21 is rotatably attached to the front fork 11, and the rear wheel 22 is rotatably attached to the intersection of the seat stay 15 and the chain stay 16.

  A handle stem 23 is rotatably inserted into the head pipe 12, and a handle 24 is attached to the upper end of the handle stem 23. On the other hand, a seat post 25 is fitted to the seat tube 14, and a saddle 26 is attached to the upper end of the seat post 25.

  The pedal 27 is connected to a sprocket (not shown) via a crank 28. When the user applies a pedaling force to the pedal 27, the sprocket rotates, and the driving force is transmitted to the rear wheel 22 via the chain 29 as the sprocket rotates.

  The motor 160 is mounted on the axle of the front wheel 21 and generates a driving force that rotates the front wheel 21. The rotation of the motor 160 is decelerated by a deceleration mechanism (not shown) and is transmitted to the front wheels 21. In this embodiment, a hub motor type bicycle with an electric motor in which a motor is incorporated in a wheel is illustrated, but the present invention can also be applied to a so-called center mount type electric bicycle.

  Electric power for driving the motor 160 is supplied from a battery 110 that is detachably provided along the seat tube 14. The battery 110 is composed of, for example, a lithium ion secondary battery, and can be repeatedly used by charging.

  A stay 31 for supporting the basket 30 is connected to the front end portion of the front fork 11. The light 170 is attached to a fastener (not shown) for attaching the upper portion of the stay 31 to the lower surface of the cage 30. The light 170 is a lamp that emits light toward the front of the host vehicle. The light 170 is configured to include a light source such as an LED or an incandescent bulb that emits light when supplied with power from the battery 110. The light 170 may be provided at an appropriate position on the handle 24 or the front fork 11 so that the light projecting direction faces the front of the host vehicle.

  The handle 24 is provided with an operation / display unit 180. The operation / display unit 180 turns a light 170 on and off, and a mode selection button 185 (see FIG. 4) that accepts an input operation for selecting a setting of an auxiliary driving force to pedaling force ratio (hereinafter also referred to as an assist ratio). A light button 186 (see FIG. 4) for receiving an input operation, and various display units 181 to 184 (see FIG. 4) for displaying the state of the electric bicycle 1.

  FIG. 2 is a block diagram showing a configuration of the electric system of the bicycle 1 with an electric motor. The main control unit 100 responds to the state of the host vehicle detected based on output signals from various sensors, which will be described later, and operation inputs to the mode selection button 185 (see FIG. 4) and the light button 186 (see FIG. 4) by the user. The driving of the motor 160 and the light 170 is comprehensively controlled, and the detected state of the own vehicle is notified to the operation / display unit 180. The main controller 100 includes, for example, an LSI (Large Scale Integration) in which a single semiconductor chip is integrated with a computer system including a CPU (arithmetic processing unit), a memory, an input / output circuit, a timer circuit, and the like.

The torque sensor 200 detects the magnitude of the input torque by human power applied to the pedal 27, to generate a torque detection signals S ₁ indicative of the magnitude of the detected input torque. A torque detection signal S ₁ generated by the torque sensor 200 is supplied to the main control unit 100. As the torque sensor 200, for example, a known torque sensor using a magnetostriction effect that does not have a mechanical contact portion with respect to the crankshaft can be used.

Speed sensor 210 detects the rotational speed of the motor 160, it generates a rotational speed detection signal S _2, which represents the rotation speed detected. Rotational speed detection signal S ₂ produced by the speed sensor 210 is supplied to the main control unit 100. The rotation speed sensor 210 can be constituted by, for example, a Hall element that detects the angular position of the rotor that constitutes the motor 160.

The temperature sensor 220 is provided in a plurality of parts of the electric bicycle 1, detects the temperature of each part, and generates a temperature detection signal S ₃ indicating the detected temperature. Temperature detection signal S ₃ generated by the temperature sensor 220 is supplied to the main control unit 100. The temperature sensor 220 is attached to, for example, the main control unit 100, the battery 110, the motor 160, and the torque sensor 200, and detects the temperature of each of these parts. As the temperature sensor 220, for example, a known temperature sensor such as a thermistor or a thermocouple can be used. In addition, the site | part which provides a temperature sensor, and the number of installation of a temperature sensor can be changed suitably.

The brake sensor 230, respectively mounted brake lever on the right grip and the left grip of the handle 24 when it detects that the (not shown) is operated, the main controller 100 so generates a brake operation detection signal S ₄ To supply.

The main control unit 100 takes out electric power from the battery 110, supplies it to the motor 160 and drives the motor 160 to drive the motor 160, and converts the kinetic energy of the motor 160 into electric energy for regeneration. Controls switching to the regenerative mode for collecting current. The main control unit 100 is, for example, when the brake operation detection signal S ₄ is outputted from the brake sensor 230, i.e., shifts to the regeneration mode when at least one of the brake lever is operated. In the regeneration mode, the electric bicycle 1 recovers the regenerative current from the motor 160 to decelerate the motor 160 and generate a braking force. The regenerative current collected from the motor 160 is supplied to the battery 110, whereby the battery 110 is charged (regenerative charging).

The main control unit 100, torque sensor 200, speed sensor 210, based on various detection signals supplied from the temperature sensor 220 and a brake sensor 230, the power running mode to generate a motor drive command value C _1, the regeneration mode The operation of the motor 160 is controlled by generating a regenerative current command value C ₂ and supplying these to the motor drive unit 300.

Motor driver 300, in the power running mode, the driving power corresponding to the assist amount indicated by the motor drive command value C ₁ is supplied (torque target value) from the main control unit 100 to the motor 160 is taken out from the battery 110 Supply. On the other hand, the motor driver 300, in the regeneration mode, the battery 110 by the main control unit is supplied from the 100 to the regenerative current of a value indicated by the regenerative current command value C ₂ is recovered from the motor 160, the recovered regenerative current Charge.

  The light driving unit 400 turns on the light 170 by taking out driving power from the battery 110 based on a control signal supplied from the main control unit 100 and supplying the driving power to the light 170.

  The battery 110 is communicably connected to the main control unit 100, and the main control unit 100 constantly monitors the remaining battery level.

  The operation / display unit 180 is communicably connected to the main control unit 100, and that the input operation to the mode selection button 185 and the light button 186 (see FIG. 4) in the operation / display unit 180 has been performed. On the other hand, information indicating the state of the electric bicycle 1 is notified from the main control unit 100 to the operation / display unit 180.

  FIG. 3 is a diagram showing in detail the connection relationship between the battery 110, the motor drive unit 300, and the motor 160. The motor driving unit 300 includes an inverter circuit 301 including transistors T1 to T6, an inverter control circuit 302 that generates gate signals for individually turning on and off the transistors T1 to T6, a transistor T7 connected to the inverter circuit 301, Is included. The transistor T7 is also turned on / off according to the gate signal supplied from the inverter control circuit 302.

  Each of the transistors T1 to T6 includes an n-channel MOSFET having a diode having a cathode connected to the drain side and an anode connected to the source side. The transistors T1 to T6 can pass a current in the reverse direction via the diode even in the off state. On the other hand, the transistor T7 is configured by a p-channel MOSFET having a diode having an anode connected to the drain side and a cathode connected to the source side. The transistor T7 can pass a current in the reverse direction via the diode even in the off state.

  In the present embodiment, the motor 160 is an outer rotor type brushless motor, and includes a rotor including a permanent magnet, a stator having a motor winding L, and three Hall elements H for detecting the rotational position of the rotor. Is included. In the present embodiment, the Hall element H also serves as the rotation speed sensor 210 that detects the rotation speed of the motor 160.

  Connection points u, v, transistors T1, T3, T5 connected to the positive side (high side) of the battery 110 and transistors T2, T4, T6 connected to the negative side (low side) of the battery 110, w is connected to each of the three motor windings L constituting the motor 160.

The inverter control circuit 302 detects the angular position of the rotor by the detection signals output from the three Hall elements H in the power running mode, and turns on the transistors T1 to T6 in a predetermined order according to the detected angular position of the rotor. . As a result, the direction of the current flowing through the motor winding L is sequentially switched to rotate the rotor. Inverter control circuit 302, in the power running mode, adjusts the on-duty of the transistor T1~T6 as assist amount indicated by the motor drive command value C ₁ is supplied (torque target value) is obtained from the main control unit 100 To do. Further, the inverter control circuit 302 cuts off the current in the direction from the motor 160 toward the battery 110 by turning off the transistor T7 in the power running mode. Current in the direction from the battery 110 to the motor 160 flows through a diode associated with the transistor T7.

On the other hand, the inverter control circuit 302 performs PWM control so that the low-side transistors T2, T4, and T6 are turned on and off at the same timing while maintaining all the high-side transistors T1, T3, and T5 in the off state in the regeneration mode. And the transistor T7 is turned on. In the PWM control, a short-circuit current flows through the motor winding L and energy is stored in the motor winding L during a period in which the low-side transistors T2, T4, and T6 are in an on state, thereby decelerating the motor 160. Thus, a braking force is generated by regenerative braking. Thereafter, when the low-side transistors T2, T4, and T6 are turned off, a voltage is induced in the motor winding L. When the induced voltage exceeds the battery voltage, a regenerative current flows toward the battery 110 via the diodes associated with the transistors and the transistor T7, and the energy stored in the motor winding L is released and the battery 110 is charged. Is done. Inverter control circuit 302, in the regeneration mode, the low-side transistors T2, T4 and T6 on the so regenerative current is obtained in the current value indicated by the regenerative current command value C ₂ is supplied from the main control unit 100 Adjust the duty.

  4A is a plan view showing the configuration of the operation / display unit 180, and FIG. 4B is a block diagram showing the configuration of the electrical system of the operation / display unit 180. As shown in FIG.

  The operation / display surface of the operation / display unit 180 is provided with a plurality of display units 181 to 184 for displaying the state of the host vehicle. Further, on the operation / display surface of the operation / display unit 180, a mode selection button 185 for receiving an input operation for selecting setting of the assist ratio and a light button 186 for receiving an input operation for turning on / off the light 170 are displayed. And are provided. When the mode selection button 185 and the light button 186 are pressed, the main control unit 100 is notified via the display control unit 187 that these buttons have been pressed.

When the mode selection button 185 is pressed, the main control unit 100 switches the assist ratio by the motor 160. In the present embodiment, any one of three assist modes (eco, standard, and power) having different assist ratios can be selected by pressing the mode selection button 185. Each time the button 185 is pressed, one of the above three assist modes is selected sequentially. The main control unit 100 supplies a drive command value C ₁ in the assist ratio corresponding to the selected assist mode to the motor driver 300 to drive the motor 160.

  On the other hand, when the light button 186 is pressed, the main control unit 100 switches on / off of the light 170. That is, the main control unit 100 controls the light driving unit 400 to switch on / off the light every time the light button 186 is pressed.

  The battery remaining amount display unit 181 is a display unit that displays the remaining amount of electric charge accumulated in the battery 110 (hereinafter referred to as battery remaining amount). The battery remaining amount display unit 181 includes five light emitting units arranged in a line. When the display control unit 187 receives information indicating the remaining battery level from the main control unit 100, the display control unit 187 turns on or blinks the light emitting units by the number corresponding to the remaining battery level indicated by the information.

  FIG. 5 is a diagram illustrating an example of the correspondence between the remaining battery level and the display mode in the remaining battery level display unit 181. When the remaining battery level is in the range of 80 to 100%, all of the five light emitting units constituting the remaining battery level display unit 181 are lit. When the battery remaining amount is in the range of 60 to 79%, each of the four light emitting units from the left among the five light emitting units constituting the battery remaining amount display unit 181 is lit. When the battery remaining amount is in the range of 40 to 59%, each of the three light emitting units from the left among the five light emitting units constituting the battery remaining amount display unit 181 is lit. When the battery remaining amount is in the range of 20 to 39%, each of the two light emitting units from the left among the five light emitting units constituting the battery remaining amount display unit 181 is turned on. When the remaining battery level is in the range of 10 to 19%, only the leftmost light emitting unit among the five light emitting units constituting the remaining battery level display unit 181 is lit. When the remaining battery level is less than 10%, the leftmost light emitting unit blinks. When the remaining battery level is approximately 0%, the leftmost light emitting unit blinks in a shorter cycle. In this embodiment, the light emission color of each light emission part which comprises the battery residual amount display part 181 is blue. Note that the relationship between the remaining battery level and the display mode of the remaining battery level display unit 181 and the emission color of each light emitting unit are not limited to those described above, and can be changed as appropriate.

  The assist mode display unit 182 is a display unit that displays the assist mode selected by operating the mode selection button 185. The assist mode display unit 182 has three light emitting units corresponding to the three assist modes (eco, standard, and power). When the display control unit 187 receives information indicating the currently selected assist mode from the main control unit 100, the display control unit 187 turns on the light emitting unit corresponding to the selected assist mode.

  The light lighting display unit 183 includes a light emitting unit that displays the driving state of the light 170. When the display control unit 187 receives information indicating that the light 170 is turned on from the main control unit 100, the display control unit 187 turns on the light emitting unit in the light turn-on display unit 183, and displays information indicating that the light 170 is turned on. When not receiving, the light emission part in the light lighting display part 183 is turned off.

  The state display unit 184 includes a single light emitting unit that displays the state of the electric bicycle 1. When the display control unit 187 receives information indicating the state of the electric bicycle 1 from the main control unit 100, the display control unit 187 turns on the light emitting unit in the state display unit 184 in a manner corresponding to the state indicated by the information. In the present embodiment, the light-emitting unit that constitutes the status display unit 184 is configured by so-called three-color LEDs in which three LED chips of red, green, and blue are accommodated in one package. Four states to be described later are identified and displayed by a combination of the emission color and the presence or absence of blinking. The state of the electric bicycle 1 displayed on the state display unit 184 will be described later.

  The light emitting units constituting the state display unit 184 are provided adjacent to these so as to follow the arrangement of the five light emitting units constituting the battery remaining amount display unit 181. In addition, the light emitting unit constituting the status display unit 184 has a shape and size different from each of the five light emitting units constituting the battery remaining amount display unit 181. Thereby, confusion with the display in the status display part 184 and the display in the battery residual amount display part 181 can be prevented. In addition, the light emission part which comprises the status display part 184 may differ in any one of a shape and a magnitude | size with respect to each of the five light emission parts which comprise the battery residual amount display part 181.

  FIG. 6 shows the correspondence between various functions of the main control unit 100 and the remaining battery level display unit 181, assist mode display unit 182, light lighting display unit 183, and status display unit 184 provided in the operation / display unit 180. FIG. FIG. 7 is a diagram illustrating the correspondence between the state of the electric bicycle 1 and the display mode in the state display unit 184.

  The abnormality detection function 101 in the main control unit 100 is a function for detecting an abnormality that has occurred in the electric bicycle 1. When the main control unit 100 detects that an abnormality has occurred in the host vehicle, the display control unit that configures the operation / display unit 180 includes information indicating that the abnormality has occurred and the type of abnormality (content of the abnormality). 187 is notified. When the display control unit 187 receives such information, the display unit 187 turns on the light emitting unit that constitutes the status display unit 184 in red, for example, and the abnormality that is notified from the main control unit 100 of the light emitting unit that constitutes the battery remaining amount display unit 181. Turn on the lamp according to the type (contents of abnormality). In the present embodiment, when an abnormality is detected, the battery remaining amount display unit 181 automatically switches from the battery remaining amount display mode for displaying the battery remaining amount to the abnormality content display mode for displaying the abnormality content.

FIG. 8 is a diagram illustrating the correspondence between the type of abnormality (content of abnormality) detected by the main control unit 100 and the display mode in the battery remaining amount display unit 181. When the information indicating the abnormality of the motor driving unit 300 is notified from the main control unit 100, the display control unit 187 selects the leftmost light emitting unit among the five light emitting units constituting the battery remaining amount display unit 181. Light up. The main controller 100 is, for example, the driving current supplied from the motor driver 300 to the motor 160, abnormality occurs in the motor drive unit 300 or the like when not in size corresponding to the drive command value C ₁ It may be determined that

Further, when information indicating that there is an abnormality in the Hall element H constituting the rotation speed sensor 210 is notified from the main control unit 100, the display control unit 187 displays the five remaining battery level display units 181. The second light emitting unit from the left among the light emitting units is turned on. The main control unit 100, for example, it is determined that there is abnormality in the speed sensor 210 when such incapable of suitably receiving the rotational speed detection signal S _2, which represents the rotation speed zero from the rotational speed sensor 210 when the stopping of the motor 160 Also good.

Further, when information indicating that there is an abnormality in the torque sensor 200 is notified from the main control unit 100, the display control unit 187 displays 3 from the left among the five light emitting units constituting the battery remaining amount display unit 181. Turn on the second light emitter. The main control unit 100, for example, it may be determined that there is abnormality in the torque sensor 200 from the torque sensor 200 at the time of calibration of the torque sensor 200 or the like when it is not possible to properly receive the torque detection signal S _1.

  Further, the display control unit 187 configures the battery remaining amount display unit 181 when information indicating that there is an abnormality in communication between the main control unit 100 and the battery 110 is notified from the main control unit 100. Among the five light emitting units, the fourth light emitting unit from the left is turned on. The main control unit 100 may determine that there is an abnormality in communication with the battery 110 when information indicating the remaining battery level cannot be acquired from the battery 110, for example.

  In addition, when the display control unit 187 is notified from the main control unit 100 of information indicating that there is an abnormality in communication between the main control unit 100 and the operation / display unit 180, the battery remaining amount display unit 181. The rightmost light-emitting part among the five light-emitting parts constituting the light is turned on. The main control unit 100 determines that there is an abnormality in communication with the operation / display unit 180 when various information cannot be properly transmitted / received to / from the operation / display unit 180, for example. Also good.

  As described above, when any abnormality occurs in the electric bicycle 1, the light-emitting unit constituting the state display unit 184 is lit in red and the type of abnormality (content of abnormality) is displayed in the battery remaining amount display unit 181. Since the light emitting part of the corresponding location is turned on, the user can not only recognize that an abnormality has occurred in the electric bicycle 1 but can also specify the location where the abnormality has occurred.

  Note that the type of abnormality displayed on the battery remaining amount display unit 181 and the display mode on the battery remaining amount display unit 181 can be changed as appropriate. In the present embodiment, five types of abnormalities are identified and displayed using the five light emitting units in the battery remaining amount display unit 181, but five or more types are displayed by simultaneously lighting or blinking two or more light emitting units. It is also possible to identify and display the above abnormalities.

  In the present embodiment, when an abnormality occurs in the electric bicycle 1, the battery remaining amount display unit 181 automatically switches from the battery remaining amount display mode to the abnormality content display mode. When a specific input operation is performed on the attached bicycle 1, the abnormality content display mode may be switched. That is, in this case, until the specific input operation is performed, the battery remaining amount display unit 181 maintains the display of the remaining battery amount. As the specific input operation, for example, an operation of continuously pressing both the mode selection button 185 and the light button 186 for a predetermined period (for example, 3 seconds), or the mode selection button 185 and the light button while operating the brake lever. For example, an operation of pressing both buttons 186 may be used.

Auxiliary driving force limiting function 102 in the main control unit 100, when the temperature of the sites shown by the temperature detection signal S ₃ supplied from the temperature sensor 220 is not within the predetermined range, the auxiliary driving force by the motor 160 (assist force ) Is a function (power saving function) that restricts the size of the) so as not to exceed a certain level. In the present embodiment, the temperature sensor 220 is attached to the main controller 100, the battery 110, the motor 160, and the torque sensor 200, and when the temperature of each of these parts is not within a predetermined range, the auxiliary driving force of the motor 160 is increased. Size is limited. Thereby, excessive heat generation in motor 160 and battery 110 which are heat sources can be prevented. In addition, when the main controller 100 and the torque sensor 200 are used in a temperature environment that is outside the guaranteed operating temperature range, the motor 160 may not be properly controlled. Driving safety can be ensured by controlling the auxiliary driving force when the temperature of the sensor 200 deviates from the predetermined range.

  While restricting the auxiliary driving force, the main control unit 100 notifies the display control unit 187 of information indicating that the auxiliary driving force is in a restricted state. When the display control unit 187 receives such information, the display control unit 187 blinks the light emitting unit constituting the state display unit 184, for example, in green. Thereby, the user can recognize that the auxiliary driving force is in a limited state. When the auxiliary driving force is limited, it is assumed that the pedal suddenly becomes heavy, and the user may have a suspicion that an abnormality has occurred in the motor 160 or the like. Therefore, by displaying on the status display unit 184 that the auxiliary driving force is limited based on the auxiliary driving force limiting function, the user can recognize that there is no abnormality in the motor or the like.

  The regenerative charging control function 103 in the main control unit 100 is a function for starting regenerative charging by shifting from the power running mode to the regenerative mode based on a brake operation during traveling. The main control unit 100 notifies the display control unit 187 of information indicating that regenerative charging is being performed while regenerative charging is being performed. When the display control unit 187 receives such information, the display control unit 187 turns on the light emitting unit constituting the state display unit 184, for example, in green. Thereby, the user can recognize that regenerative charging is performed. By displaying that regenerative charging is being performed in the status display unit 184, for example, an effect that regenerative charging can be efficiently performed when regenerative charging is intentionally performed can be expected.

  In the present embodiment, the regenerative charging is performed by shifting to the regenerative mode according to the brake operation, but the present invention is not limited to this. For example, regenerative charging may be performed when the vehicle speed is equal to or higher than a certain level and no input torque is applied (that is, when traveling downhill or during inertial traveling). Such a state can be detected based on output signals from the torque sensor 200 and the rotation speed sensor 210.

Power limiting function 104 in the main control unit 100, based on the torque detection signals S ₁ from the torque sensor 200, it determines that the application of pedal force against the pedal 27 is predetermined time period (e.g. 3 minutes) not continuously performed In this case, power is supplied from the battery 110 by forcibly turning off the light 170 and forcibly turning off the light emitting units constituting the battery remaining amount display unit 181, the assist mode display unit 182 and the light lighting display unit 183. This is a function (power saving function) for limiting power consumption in the electrical components such as the light 170 and the operation / display unit 180 that operate in response to the light. The main control unit 100 supplies information indicating that power consumption is limited to the display control unit 187 while the power consumption in the light 170 and the operation / display unit 180 is limited. When the display control unit 187 receives such information, the display control unit 187 turns on the light emitting unit constituting the state display unit 184, for example, in blue. Thereby, the user can recognize that the power consumption in the light 170 and the operation / display unit 180 is limited. When the power consumption restriction function 104 is activated, the light 170, the remaining battery level display unit 181, the assist mode display unit 182, and the light lighting display unit 183 are turned off, so that the user can use the battery 110, the light 170, and the operation / display unit 180. There is a risk of suspicion that an abnormality has occurred in either of these. Therefore, by displaying on the status display unit 184 that the power consumption is limited based on the power consumption limiting function 104, the user has no abnormality in the battery 110, the light 170, and the operation / display unit 180. It can be recognized as a thing.

  As described above, the state display unit 184 performs the state of the host vehicle (the state in which an abnormality is detected, the state in which the auxiliary driving force is limited, the regenerative charging) brought about based on various functions of the main control unit 100. And a state in which power consumption in the light 170 and the operation / display unit 180 is limited) is identified and displayed by a combination of the emission color and the presence or absence of blinking. In the present embodiment, the light emitting unit constituting the status display unit 184 is configured by a three-color LED, and can express four or more colors. The four states are identified and displayed by four colors. May be.

  The battery monitoring function 105 in the main control unit 100 is a function for acquiring information (battery voltage or the like) indicating the remaining battery level from the battery 110 when the main control unit 100 communicates with the battery 110. The main control unit 100 notifies the display control unit 187 of information indicating the remaining battery level acquired from the battery 110. When the display control unit 187 receives such information, the display control unit 187 turns on and blinks the light emitting units constituting the remaining battery level display unit 181 by the number corresponding to the remaining battery level. Thereby, the user can recognize the current remaining battery level.

The assist mode selection function 106 in the main control unit 100 is a function that selects an assist mode in accordance with an operation input to the assist mode selection button 185. The main control unit 100, generates the motor driving command value C ₁ in order to drive the motor 160 in the assist ratio corresponding to the selected assist mode, the display control unit 187 information indicating the assist mode currently selected Notify When receiving such information, the display control unit 187 turns on the corresponding light emitting unit among the three light emitting units constituting the assist mode display unit 182. Thus, the user can recognize the currently selected assist mode.

  The light drive control function 107 in the main control unit 100 is a function for turning on and off the light 170 in accordance with an operation input to the light button 186. When the display control unit 187 receives information indicating that the light 170 is turned on from the main control unit 100, the display control unit 187 turns on the light turn-on display unit 183. Thereby, the user can recognize whether or not the light 170 is currently lit.

  By the way, the state of the host vehicle displayed in the state display unit 184 (the state in which an abnormality has been detected, the state in which the auxiliary driving force is limited, the state in which regenerative charging is being performed, the light 170 and the operation / display unit 180 It is conceivable that two or more states occur simultaneously in a state where power consumption is limited. In such a case, a state having the highest predetermined priority order among the simultaneously generated states is displayed on the state display unit 184. In the present embodiment, the highest priority state is a state where an abnormality is detected, the second is a state where the auxiliary driving force is limited, and the third is a state where regenerative charging is performed, The fourth is a state where power consumption in the light 170 and the operation / display unit 180 is limited. For example, when a state in which an abnormality is detected by the abnormality detection function 101 and a state in which the auxiliary driving force is limited by the auxiliary driving force limiting function 102 occur simultaneously, the state display unit 184 detects the abnormality. Is preferentially displayed. Therefore, in this case, the light emitting unit constituting the state display unit 184 is lit in red indicating that an abnormality has been detected. Note that the priority order is not limited to the above, and can be changed as appropriate.

  FIG. 9 is a flowchart showing the flow of processing in the display control program for performing display control in the status display unit 184. The main control unit 100 performs display control in the status display unit 184 by repeatedly executing this display control program every predetermined period.

  In step S11, the main control unit 100 determines whether or not an abnormality is detected in the host vehicle. If it is determined that the abnormality is detected, the process proceeds to step S12. If it is determined that no abnormality is detected, the process proceeds to step S13.

  In step S <b> 12, the main control unit 100 supplies the operation / display unit 180 with information indicating that an abnormality has been detected in the host vehicle, thereby causing the light emitting unit constituting the state display unit 184 to light up in red. After that, this routine is terminated.

  In step S13, the main control unit 100 determines whether or not the auxiliary driving force is in a restricted state. If it is determined that the auxiliary driving force is in a restricted state, the process proceeds to step S14. If it is determined that the auxiliary driving force is not limited, the process proceeds to step S15.

  In step S <b> 14, the main control unit 100 supplies the operation / display unit 180 with information indicating that the auxiliary driving force is limited, so that the light emitting unit constituting the state display unit 184 blinks in green. Then, this routine is terminated.

  In step S15, the main control unit 100 determines whether or not regenerative charging is being performed. If it is determined that regenerative charging is being performed, the main control unit 100 proceeds to step S16. If it is determined that regenerative charging is not being performed, the process proceeds to step S17.

  In step S <b> 16, the main control unit 100 supplies the operation / display unit 180 with information indicating that regenerative charging is being performed, so that the light emitting unit constituting the state display unit 184 is lit in green. Then, this routine is terminated.

  In step S17, the main control unit 100 determines whether or not the power consumption in the light 170 and the operation / display unit 180 is limited, and determines that the power consumption is in a limited state. In step S18, the routine is terminated when it is determined that the power consumption is not limited.

  In step S <b> 18, the main control unit 100 supplies the operation / display unit 180 with information indicating that the power consumption is in a restricted state so that the status display unit 184 is lit in blue, and then this routine is executed. Terminate.

  In another embodiment, the state with the highest priority is a state where power consumption in the light 170 and the operation / display unit 180 is limited, the second is a state where an abnormality is detected, and the third is a regeneration. The charging is being performed, and the fourth is the state where the auxiliary driving force is limited. For example, when the state where the auxiliary driving force is limited by the auxiliary driving force limiting function 102 and the state where the regenerative charging is performed by the regenerative charging control function 103 occur simultaneously, the state display unit 184 performs regenerative charging. It is preferentially displayed that the state is being performed. Therefore, in this case, the light emitting unit constituting the state display unit 184 is lit in green indicating that regenerative charging is being performed.

  FIG. 9 is a flowchart showing the flow of processing in the display control program corresponding to the other embodiment. The main control unit 100 performs display control in the status display unit 184 by repeatedly executing this display control program every predetermined period.

  In step S21, the main control unit 100 determines whether or not the power consumption in the light 170 and the operation / display unit 180 is limited, and determines that the power consumption is in a limited state. In step S22, the process proceeds to step S22. If it is determined that the power consumption is not limited, the process proceeds to step S23.

  In step S22, the main control unit 100 supplies the information indicating that the power consumption is limited to the operation / display unit 180 to light the status display unit 184 in blue, and then executes this routine. Terminate.

  In step S23, the main control unit 100 determines whether or not an abnormality is detected in the host vehicle. If it is determined that an abnormality is detected, the process proceeds to step S24. If it is determined that no abnormality is detected, the process proceeds to step S25.

  In step S24, the main control unit 100 supplies information indicating that an abnormality is detected in the host vehicle to the operation / display unit 180, thereby causing the light emitting unit constituting the state display unit 184 to light up in red. After that, this routine is terminated.

  In step S25, the main control unit 100 determines whether or not regenerative charging is being performed. If it is determined that regenerative charging is being performed, the main control unit 100 proceeds to step S26. If it is determined that regenerative charging is not being performed, the process proceeds to step S27.

  In step S <b> 26, the main control unit 100 supplies the operation / display unit 180 with information indicating that regenerative charging is being performed, thereby lighting the light-emitting unit constituting the state display unit 184 in green. Then, this routine is terminated.

  In step S27, the main control unit 100 determines whether or not the auxiliary driving force is in a restricted state. If it is determined that the auxiliary driving force is in a restricted state, the process proceeds to step S28. If it is determined that the auxiliary driving force is not limited, this routine is terminated.

  In step S <b> 28, the main control unit 100 supplies information indicating that the auxiliary driving force is limited to the operation / display unit 180, so that the light emitting units constituting the state display unit 184 are lit in yellow. Then, this routine is terminated.

  As is apparent from the above description, according to the electric bicycle 1 according to the embodiment of the present invention, the vehicle has various functions (abnormality detection function, auxiliary driving force limiting function, regenerative charging control function, power consumption limiting function). ) Based on any state (abnormality is detected, auxiliary driving force is limited, regenerative charging is being performed, power consumption in light 170 and operation / display unit 180 is limited) The state display unit 184 identifies and displays that the state is in the state of Therefore, the user can recognize that the state of the host vehicle and the corresponding function are operating.

  In addition, when two or more states occur simultaneously, the state display unit 184 performs display in a manner corresponding to the state having the highest priority order, so that more important information is given priority to the user. Can be notified.

  In this embodiment, power consumption in the four states (the state in which an abnormality is detected, the state in which the auxiliary driving force is limited, the state in which regenerative charging is performed, and the light 170 and the operation / display unit 180 is performed). All of the (restricted state) can be displayed on the state display unit 184, but is not limited to this. For example, any two or three of the four states may be displayed on the state display unit 184. Moreover, in this embodiment, although the bicycle 1 with an electric motor illustrated the case where it has an abnormality detection function, an auxiliary drive force restriction function, a regenerative charge control function, and a power consumption restriction function, two of these functions or Three states may be provided, and each state generated based on the two or three functions may be displayed on the state display unit 184.

  In addition, according to the electric bicycle 1 according to the present embodiment, when it is detected that an abnormality has occurred in the host vehicle based on the abnormality detection function, the state display unit 184 displays that fact. Since the content of the abnormality is displayed on the battery remaining amount display unit 181, the location where the abnormality has occurred (the cause of the abnormality) can be quickly identified. In addition, each of the plurality of light emitting units constituting the battery remaining amount display unit 181 and the light emitting unit constituting the state display unit 184 are arranged in a line and adjacent to each other. When it occurs, it becomes easy to visually recognize both the battery remaining amount display unit 181 and the state display unit 184 at the same time. In addition, the light emitting unit constituting the state display unit 184 has a shape and size different from each of the light emitting units constituting the battery remaining amount display unit 181, and further, the light emitting unit and the battery constituting the state display unit 184. In the situation where the light emitting units constituting the remaining amount display unit 181 are turned on at the same time, they are turned on with different emission colors, so that the display on the status display unit 184 and the display on the battery remaining amount display unit 181 are prevented from being confused. Can do.

DESCRIPTION OF SYMBOLS 1 Bicycle 100 with an electric motor Main controller 110 Battery 160 Motor 180 Operation / display unit 181 Battery remaining amount display unit 184 Status display unit 185 Mode selection button 186 Light button 200 Torque sensor 210 Rotational speed sensor 220 Temperature sensor 230 Brake sensor

Claims (10)

An auxiliary driving system that generates an auxiliary driving force having a magnitude corresponding to a pedaling force applied to the pedal by a motor and drives a wheel by the auxiliary driving force; and
A battery for supplying power to the motor;
An anomaly detecting means for detecting an anomaly occurring in the host vehicle;
Regenerative charging means for regeneratively charging the battery with electric power generated by rotation of the motor;
Power consumption limiting means for limiting power consumption in each electrical component that receives power supply from the battery when a predetermined condition is satisfied;
The first state in which an abnormality is detected by the abnormality detection means, the second state in which the battery is regeneratively charged by the regenerative charging means, and the power consumption of each electrical component is restricted by the power consumption restriction means. When any one of the third states is generated, the display corresponding to the generated state is performed, and the first state, the second state, and the third state If at least two of the two states occur simultaneously, state display means for performing display corresponding to the highest priority state among the at least two states occurring simultaneously;
Including motorized bicycles. An auxiliary driving force limiting means for limiting the size of the auxiliary driving force according to the temperature detected at at least one location in the host vehicle;
The state display means performs display corresponding to the fourth state when the fourth state in which the magnitude of the auxiliary driving force is limited by the auxiliary driving force limiting unit is generated, and If at least two of the first state, the second state, the third state, and the fourth state occur at the same time, the priority order of the at least two states that occurred at the same time The bicycle with an electric motor according to claim 1, wherein display corresponding to the highest state is performed.   The bicycle with an electric motor according to claim 2, wherein the state display means includes a light emitting unit that emits light in different modes corresponding to each of the first to fourth states.   The bicycle with electric motor according to claim 3, wherein the light emitting unit identifies and displays the first to fourth states by a light emitting color or a combination of a light emitting color and blinking.   5. A remaining amount display means for displaying the remaining amount of the battery, wherein the remaining amount display means displays the type of detected abnormality when an abnormality is detected by the abnormality detecting means. The electric bicycle according to any one of the above.   The remaining amount display unit includes a plurality of light emitting units, and when displaying the remaining amount of the battery, the number of the light emitting units corresponding to the remaining amount of the battery is turned on, and the abnormality detected by the abnormality detecting unit The bicycle with electric motor according to claim 5, wherein when the type is displayed, the light emitting unit at a position corresponding to the detected abnormality type emits light.   The motor-equipped bicycle according to claim 6, further comprising a display unit having a light emitting unit constituting the state display unit and a plurality of light emitting units constituting the remaining amount display unit on a display surface. It further includes an operation unit that accepts an operation input,
The remaining amount display means displays the type of detected abnormality when a predetermined operation is performed on the operation unit when an abnormality is detected by the abnormality detection means. Bicycle with electric motor described in 1.   The bicycle with electric motor according to claim 7, wherein the light emitting unit constituting the state display unit and the plurality of light emitting units constituting the remaining amount display unit are arranged in a line on the display surface.   10. The electric bicycle according to claim 6, wherein the light emitting unit constituting the status display unit has a shape or a size different from each of the plurality of light emitting units constituting the remaining amount display unit. .