Electric vehicle runaway prevention and control system

Abstract

The present invention discloses a flying car prevention and control system for electric vehicles, which belongs to the field of flying car prevention and control. The flying car prevention and control system for electric vehicles includes an unlocking module. After the unlocking module is triggered, the electric vehicle enters a flying car monitoring state. The system monitors the output signal in real time to obtain a real-time signal. The system is preset with a linear safety range of the output signal under safe driving. When the real-time signal exceeds the linear safety range and is not affected by a sudden change in the brake signal, the controller controls the speed control signal to adjust. Otherwise, the speed control signal output of the controller is not affected. This scheme monitors the output signal in real time, and according to the preset linear safety range, it can quickly identify the state of linear disturbance caused by sudden changes in the output signal in a short time. When a nonlinear signal is generated and the sudden change is not caused by the brake signal, it can quickly brake, control and adjust the speed control signal, reduce the occurrence of the "flying car" phenomenon, and effectively ensure parking and driving safety.

Description

Technical Field

[0001] The present invention relates to the field of runaway vehicle prevention and control, and more specifically, to a runaway vehicle prevention and control system for electric vehicles. Background Art

[0002] Electric vehicle "speeding" means that the motor runs at high speed as soon as the electric door lock is turned on, that is, the speed of the electric bicycle is not controlled by the turning handle and the dynamic handle, and the electric bicycle runs at high speed. "Speeding" is a very serious electric bicycle fault and can easily cause personal accidents. When "speeding" occurs, brakes should be applied immediately.

[0003] The reasons why electric vehicles are "flying" are as follows:

[0004] 1. The circuit is connected to the power by water. The controller speed control handle wires are mostly connected by connectors. After water enters, it is easy to connect the handle signal wire to the positive pole of the handle.

[0005] 2. The speed control wire and the negative wire of the controller's throttle are broken. If the throttle is disconnected and it is normal, it means the controller is normal, and the speed control wire and speed control wire are faulty. Some lines are aging or bumpy, which can cause the connector to have loose contact. If the negative wire is broken, the controller will have a "flying" phenomenon.

[0006] 3. Controller failure. If the controller power tube is broken down, the overrun failure will also occur.

[0007] 4. Simple model with power assist function. Some chain flywheels are rusted and rotate continuously. As long as the "foot crank" turns, the power assist function will be activated. If the "foot crank" turns automatically, the car will "jump" forward.

[0008] Therefore, how to effectively prevent and control the "flying car" phenomenon is a major problem that needs to be solved during the use of electric vehicles. Summary of the invention

[0009] In view of the problems existing in the prior art, the purpose of the present invention is to provide an electric vehicle flying prevention and control system, which can monitor the "flying car" phenomenon when the vehicle is parked, and provide timely feedback when the output voltage or current suddenly increases in a short period of time, so as to effectively prevent the "flying car" phenomenon and ensure driving and parking safety.

[0010] To solve the above problems, the present invention adopts the following technical solutions.

[0011] An electric vehicle runaway prevention and control system comprises an unlocking module. After the unlocking module is triggered, the electric vehicle enters a runaway monitoring state, and the system performs real-time supervision on the output signal to obtain a real-time signal.

[0012] The system is preset with a linear safety range of the output signal under safe driving;

[0013] When the real-time signal exceeds the linear safety range and there is no sudden change in the brake signal, the controller controls the speed control signal to adjust; otherwise, the speed control signal output of the controller is not affected.

[0014] As a further improvement of the present invention, the unlocking module includes a parking unlocking module and a driving unlocking module. The parking unlocking module is used to detect the "flying car" prevention and control when the driver sits on the electric vehicle and shifts gears when parking; the driving unlocking module is used to detect the "flying car" prevention and control when the electric vehicle is driving.

[0015] As a further improvement of the present invention, the parking unlocking module comprises

[0016] The parking sensor switch is turned on when the electric vehicle side support is opened and the double support is not activated;

[0017] The gravity sensor switch is set under the seat cushion to detect whether a person is sitting on the electric vehicle;

[0018] Two human conscious action signals, namely the unlocking action signal and the P gear signal action, detect whether there is unlocking and P gear action;

[0019] When the parking sensor switch is turned on, the gravity sensor switch and the secondary human consciousness action signal detect that there is someone on the electric vehicle and the unlocking and P gear actions are performed, and the unlocking module is triggered.

[0020] As a further improvement of the present invention, the driving unlocking module comprises

[0021] Driving sensor switch, open when the electric vehicle side support and double support are not in use;

[0022] The gravity sensor switch is set under the seat cushion to detect whether a person is sitting on the electric vehicle;

[0023] The driving human consciousness action signals are unlocking action signals and speed regulation signal actions, respectively, to detect whether there are unlocking and speed regulation actions;

[0024] When the driving sensing switch is turned on, the gravity sensing switch and the driving human consciousness action signal detect that there is someone on the electric vehicle and the unlocking and speed adjustment actions are performed, and the unlocking module is triggered.

[0025] As a further improvement of the present invention, the output signal is an output voltage signal. When the real-time signal exceeds the linear safety range and is not affected by a sudden change in the brake signal, the controller goes into standby mode and suspends sending a speed control signal to the motor; otherwise, the speed control signal output of the controller is not affected.

[0026] As a further improvement of the present invention, the output signal is an output current signal. When the real-time signal exceeds the linear safety range and is not affected by a sudden change in the brake signal, the controller limits the current and controls the maximum speed value; otherwise, the speed control signal output of the controller is not affected.

[0027] As a further improvement of the present invention, a linkage mechanism is arranged between the side support and the double support; the linkage mechanism includes a linkage plate and trigger parts arranged on both sides of the upper end of the linkage plate, which respectively come into contact with the two trigger parts when the side support or the double support is folded up and not in use; response plates are provided at the positions corresponding to the two trigger parts in the bottom area of ​​the electric vehicle.

[0028] As a further improvement of the present invention, the trigger portion and the corresponding response piece are elastically connected so that they are not in contact when there is no external force. The elastic connection may be a compression spring.

[0029] As a further improvement of the present invention, a trigger middle positioning unit fixed to the bottom plate of the electric vehicle is rotatably provided at the upper end of the linkage plate and between the two trigger parts. When either the side support or the double support is propped up, the trigger part on that side loses its resistance force and the corresponding response piece is not triggered. On the contrary, when the side support or the double support is folded up, the trigger part triggers the response piece on that side.

[0030] As a further improvement of the present invention, the side support and the double support are respectively provided with a trigger protrusion 1 and a trigger protrusion 2 which can be folded up to trigger the two trigger parts.

[0031] As a further improvement of the present invention, the double support is installed on the bottom of the electric vehicle through a rotating frame, a through slot is provided on the rotating frame, one end of the linkage plate extends into the through slot to extend the second trigger part at its end from the through slot.

[0032] Compared with the prior art, the advantages of the present invention are:

[0033] 1. This solution monitors the output signal in real time, and according to the preset linear safety range, it can quickly identify the state of linear disturbance caused by sudden changes in the output signal in a short period of time, and can quickly brake when it is determined that the sudden change is not caused by the brake signal, control and adjust the speed signal, reduce the occurrence of "flying car" phenomenon, and effectively ensure parking and driving safety.

[0034] 2. The output signal supervised by this scheme can be output voltage or output current. When the real-time signal of output voltage exceeds the linear safety range and there is no sudden change of brake signal, the controller will be on standby and stop sending speed control signal to the motor; when the real-time signal of output current exceeds the linear safety range and there is no sudden change of brake signal, the controller will limit the current and control the maximum speed.

[0035] 3. The side support and the double support of the present invention are provided with a linkage mechanism. The parking sensor switch will be turned on only when the side support is propped up to control the "flying car" phenomenon in the side support state. Since the electric vehicle wheels are not affected even if they rotate when the double support is propped up, the misjudgment of the "flying car" phenomenon of the electric vehicle in the double support state can be effectively avoided.

[0036] 4. The linkage mechanism of the present scheme is installed at the bottom of the electric vehicle, and the trigger protrusion 1 on the side support and the trigger protrusion 2 on the double support contact the corresponding response piece, so that when and only when the response piece on the double support side is triggered, the parking sensor switch is given an open signal, and when both response pieces are triggered, the driving sensor switch is given an open signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is a flow chart of the present invention;

[0038] Figure 2 This is a diagram of the unlocking module in the parking state of the present invention;

[0039] Figure 3 This is a diagram of the unlocking module of the present invention in the driving state;

[0040] Figure 4 This is a diagram of the voltage variation range of the present invention;

[0041] Figure 5 This is a diagram of the current variation range of the present invention;

[0042] Figure 6 It is a schematic diagram of the three-dimensional structure from a first perspective when the side support and the double support of the electric vehicle of the present invention are opened;

[0043] Figure 7 for Figure 6 Schematic diagram of the structure at A in the middle;

[0044] Figure 8 It is a schematic diagram of the third perspective structure of the electric vehicle of the present invention when the side support and the double support are opened;

[0045] Fig. 9 for Figure 8 Schematic diagram of the structure at the middle linkage plate.

[0046] Description of the numbers in the figure:

[0047] 101 triggers the first protrusion, 102 triggers the second protrusion, 103 links the plate, and 104 responds to the plate. DETAILED DESCRIPTION

[0048] See also Figure 1-9A system for preventing and controlling electric vehicle from running away includes an unlocking module. After the unlocking module is triggered, the electric vehicle enters a running away monitoring state. The system monitors the output signal in real time to obtain a real-time signal. The system presets a linear safety range of the output signal under safe driving. When the real-time signal exceeds the linear safety range and there is no sudden change in the brake signal, the controller controls the speed control signal to adjust. Otherwise, the speed control signal output of the controller is not affected.

[0049] The unlocking module includes a parking unlocking module and a driving unlocking module. The parking unlocking module is used to detect the "flying car" prevention and control when the driver sits on the electric vehicle and shifts gears while parking; the driving unlocking module is used to detect the "flying car" prevention and control when the electric vehicle is driving.

[0050] The parking and unlocking module includes a parking sensor switch, which is turned on when the side support of the electric vehicle is opened and the double support is not in use; a gravity sensor switch, which is arranged under the seat cushion, to detect whether a human body is sitting on the electric vehicle; two human consciousness action signals, namely the unlocking action signal and the P gear signal action, to detect whether there is an unlocking and P gear action; when the parking sensor switch is turned on, the gravity sensor switch and the secondary human consciousness action signal detect that there is someone on the electric vehicle and the unlocking and P gear actions have been performed, and the unlocking module is triggered.

[0051] The driving unlocking module includes a driving sensing switch, which is turned on when the side supports and double supports of the electric vehicle are not in use; a gravity sensing switch, which is arranged under the seat cushion to detect whether a human body is sitting on the electric vehicle; driving human conscious action signals, which are unlocking action signals and speed regulation signal actions, respectively, to detect whether there are unlocking and speed regulation actions; when the driving sensing switch is turned on, the gravity sensing switch and the driving human conscious action signal detect that there is someone on the electric vehicle and has performed unlocking and speed regulation actions, and the unlocking module is triggered.

[0052] The output signal is an output voltage signal. When the real-time signal exceeds the linear safety range and there is no sudden change in the brake signal, the controller will be on standby and stop sending speed control signals to the motor; otherwise, the speed control signal output of the controller will not be affected.

[0053] The output signal is the output current signal. When the real-time signal exceeds the linear safety range and there is no sudden change in the brake signal, the controller limits the current and controls the maximum speed. Otherwise, the speed control signal output of the controller is not affected.

[0054] Specific embodiment 1: Please refer to Figure 1-9, an electric vehicle runaway prevention and control system, including a parking sensor switch, which is turned on when the side support of the electric vehicle is opened and the double support is not in use; in order to ensure the linkage effect between the side support and the double support, a linkage machine is arranged between the side support and the double support, including a linkage plate 103 and trigger parts arranged on both sides of the upper end of the linkage plate 103, which just contact the two trigger parts respectively when the side support or the double support is folded and not in use; a response piece 104 is arranged at the position corresponding to the two trigger parts in the bottom area of ​​the electric vehicle, and there is an elastic connection generated by a compression spring between the trigger part and the corresponding response piece 104, and there is no contact when there is no external force, and a trigger middle positioning unit fixed to the bottom plate of the electric vehicle is rotatably arranged at the upper end of the linkage plate 103 and between the two trigger parts, such as Figure 7 As shown, the trigger middle positioning unit is a columnar structure. When either the side support or the double support is propped up, the trigger part on that side loses its resistance force, and the corresponding response piece 104 is not triggered. Conversely, when the side support or the double support is folded up, the trigger part triggers the response piece 104 on that side. When the response piece 104 on one side of the double support is triggered and the other side is not triggered, that is, the side support is opened and the double support is not activated, the trigger signal will be wirelessly transmitted to the controller, and the controller will turn on the parking sensor switch, otherwise, the parking sensor switch will be turned off.

[0055] It also includes a gravity sensing switch, which is arranged under the seat cushion to detect whether a human body is sitting on the electric vehicle; and two human consciousness action signals, namely an unlocking action signal and a P gear signal action, to detect whether there are unlocking and P gear actions; when the parking sensor switch is turned on, the gravity sensing switch and the secondary human consciousness action signal detect that there is someone on the electric vehicle and the unlocking and P gear actions are performed, the unlocking module is triggered, and the electric vehicle enters the flying car monitoring state, and the system monitors the output voltage signal in real time.

[0056] The system has preset linear safety intervals for output voltage signals under safe driving conditions. A safety range is set for each voltage, which is displayed as follows: Figure 4An interval range diagram is shown. It is set to be between 0 and t seconds, and the preset change voltage range of voltage V0 is between V0+v1 and V0-v1, that is, within 0 to t seconds, V0 can only change by 2v1, 2v1 is the variable linear safety range under voltage V0, once it exceeds this range, it exceeds the linear safety range, and so on. Every time t, update voltage V0 to Vt, continue to set Vt's preset change voltage range between Vt+v1 and Vt-v1, and continue to obtain the interval range diagram of voltage V-V' change. The specific value of t can be set. When t is extremely small, the real-time voltage monitored in a short time exceeds the linear safety range and will have a sudden change phenomenon. In the process of continuous speed regulation and pressure increase, it will be manifested as a linear disturbance on the vt circuit diagram, resulting in nonlinearity. If it is judged as "flying car" under the condition that the influence of the brake signal is excluded, the controller will standby and suspend sending speed regulation signals to the motor; otherwise, the speed regulation signal output of the controller will not be affected.

[0057] The side support and the double support are respectively provided with a trigger protrusion 101 and a trigger protrusion 102 that can be folded to trigger the two trigger parts, which are used to compensate for the distance between the trigger part and the side support or the double support, so that when the side support or the double support is folded, it can trigger the response plate 104 more accurately through the trigger part.

[0058] Specific embodiment 2: A safe linear range is preset in the system as in embodiment 1, but this embodiment is based on the safe linear range obtained by measuring the current under safe driving.

[0059] The system includes a driving sensing switch, which is turned on when the side supports and double supports of the electric vehicle are not activated; that is, when the response pieces 104 on both sides of the side supports and double supports are triggered, a trigger signal is transmitted to the controller, so that the controller controls the driving sensing switch to be turned on. The triggering middle positioning unit in the linkage mechanism has elastic expansion and contraction capability in the vertical direction, and the elastic expansion and contraction force is greater than the elastic expansion and contraction capability between the triggering part and the response piece 104, so that the triggering part and the response piece 104 are compressed first, and the force when the side supports and double supports are retracted is large, and then the elastic capacity of the triggering middle positioning unit will continue to be overcome, so that the response pieces on both sides can be triggered in the end.

[0060] The same as the first embodiment also includes a gravity sensing switch, which is arranged under the seat cushion to detect whether a person is sitting on the electric vehicle. It also includes driving artificial consciousness action signals, which are unlocking action signals and speed regulation signal actions, respectively, to detect whether there are unlocking and speed regulation actions.

[0061] When the driving sensing switch is turned on, the gravity sensing switch and the driving human consciousness action signal detect that there is someone on the electric vehicle and the unlocking and speed adjustment actions are performed. The unlocking module is triggered, and the electric vehicle enters the flying monitoring state. The system monitors the output current signal in real time to obtain the real-time current; as shown in Example 1, the following is obtained in the same way. Figure 5 A diagram showing the variable range of the current I-I'.

[0062] When the real-time current signal exceeds the linear safety range and there is no sudden change in the brake signal, the controller limits the current and controls the maximum speed to effectively ensure driving safety. When the monitoring line spectrum enters the safe linear range, the limit on the maximum value is automatically released to avoid sudden changes in current speed regulation. The vehicle travels at a constant speed within the controllable range, that is, the speed regulation signal output of the controller is not affected. Specific embodiment three:

[0064] Based on the specific embodiments one and two, since the double support is installed on the bottom of the electric vehicle through a rotating frame, a through slot is opened on the rotating frame, so that one end of the linkage plate 103 can be easily extended into the through slot, and a certain supporting force can be obtained by utilizing the rotating frame, thereby reducing the insufficient force of connecting the linkage plate 103 and the two triggering parts by triggering the middle positioning unit alone. It should be noted that the existence of the rotating frame will not affect the use of the side support and the double support and the rotation of the linkage plate 103.

Claims

1. An electric vehicle runaway prevention and control system, characterized in that: It includes an unlocking module. After the unlocking module is triggered, the electric vehicle enters the flying vehicle monitoring state. The system monitors the output signal in real time to obtain a real-time signal. The system is preset with a linear safety range of the output signal under safe driving; When the real-time signal exceeds the linear safety range and there is no sudden change in the brake signal, the controller controls the speed control signal to adjust; otherwise, the speed control signal output of the controller is not affected; The unlocking module includes a parking unlocking module and a driving unlocking module. The parking unlocking module is used to detect the "flying car" prevention and control when the driver is sitting on the electric vehicle and shifting gears when the vehicle is parked; the driving unlocking module is used to detect the "flying car" prevention and control when the electric vehicle is driving; The driving unlocking module comprises Driving sensor switch, open when the electric vehicle side support and double support are not in use; The gravity sensor switch is set under the seat cushion to detect whether a person is sitting on the electric vehicle; The driving human consciousness action signals are unlocking action signals and speed regulation signal actions, respectively, to detect whether there are unlocking and speed regulation actions; When the driving sensing switch is turned on, the gravity sensing switch and the driving human consciousness action signal detect that there is someone on the electric vehicle and the unlocking and speed adjustment actions are performed, and the unlocking module is triggered.

2. The electric vehicle runaway prevention system according to claim 1, characterized in that: The parking unlocking module comprises The parking sensor switch is turned on when the electric vehicle side support is opened and the double support is not activated; The gravity sensor switch is set under the seat cushion to detect whether a person is sitting on the electric vehicle; Two human conscious action signals, namely the unlocking action signal and the P gear signal action, detect whether there is unlocking and P gear action; When the parking sensor switch is turned on, the gravity sensor switch and the secondary human consciousness action signal detect that there is someone on the electric vehicle and the unlocking and P gear actions are performed, and the unlocking module is triggered.

3. The electric vehicle runaway prevention system according to claim 1, characterized in that: The output signal is an output voltage signal. When the real-time signal exceeds the linear safety range and is not affected by a sudden change in the brake signal, the controller is on standby and stops sending speed control signals to the motor; otherwise, the speed control signal output of the controller is not affected.

4. The electric vehicle runaway prevention system according to claim 1, characterized in that: The output signal is an output current signal. When the real-time signal exceeds the linear safety range and is not affected by a sudden change in the brake signal, the controller limits the current and controls the maximum speed value; otherwise, the speed control signal output of the controller is not affected.

5. The electric vehicle runaway prevention system according to claim 1, characterized in that: A linkage mechanism is provided between the side support and the double support; the linkage mechanism comprises a linkage plate (103) and trigger parts provided on both sides of the upper end of the linkage plate (103), which respectively contact the two trigger parts when the side support or the double support is folded up and not in use; response plates (104) are provided at positions corresponding to the two trigger parts in the bottom area of ​​the electric vehicle.

6. The electric vehicle runaway prevention system according to claim 5, characterized in that: The trigger part and the corresponding response sheet (104) are elastically connected and do not contact each other when there is no external force.

7. The electric vehicle runaway prevention system according to claim 5, characterized in that: A trigger middle positioning unit fixed to the bottom plate of the electric vehicle is rotatably provided at the upper end of the linkage plate (103) and between the two trigger parts. When one side of the side support or the double support is propped up, the trigger part on that side loses its resistance force and the corresponding response piece (104) is not triggered. Conversely, when the side support or the double support is retracted, the trigger part triggers the response piece (104) on the retracted side.

8. The electric vehicle runaway prevention system according to claim 5, characterized in that: The side support and the double support are respectively provided with a trigger convex part 1 (101) and a trigger convex part 2 (102) which can be folded to trigger the two trigger parts.

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