CN103303160A - Automatic speed control system and method as well as electric vehicle - Google Patents
Automatic speed control system and method as well as electric vehicle Download PDFInfo
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Abstract
The invention provides an automatic speed control system which comprises a driving information analysis unit and a motor control unit, wherein the driving information analysis unit is used acquiring driving information of an electric vehicle in real time and judging whether the electric vehicle is required to be accelerated according to the driving information; and motor control unit is used for increasing the rotation speed of a driving motor of the electric vehicle under the condition that driving information analysis unit judges that the electric vehicle is required to be accelerated, so that the driving speed of the electric vehicle is increased until the driving speed is equal to a preset speed, and the current rotation speed of the driving motor is maintained under the condition that driving information analysis unit judges that the electric vehicle is not required to be accelerated. The invention further provides the electric vehicle and an automatic speed control method. According to the technical scheme, the driving information of the electric vehicle can be detected in real time, and the driving speed of the electric vehicle can be automatically adjusted according to the driving information of the electric vehicle, so that the driving speed of the electric vehicle can accord with the current driving information of the electric vehicle, the riding experience of a user is guaranteed, and the riding safety of the user is also guaranteed.
Description
Technical field
The present invention relates to the vehicle technology field, in particular to a kind of Auto speed-control system, a kind of speed automatic control method and a kind of battery-driven car.
Background technology
Mostly battery-driven car is manual third gear (high, medium and low) switch selection switching controls speed on the market, the user generally likes riding at high speed gear, and battery-driven car is when being in high speed gear, moment of torsion minimum on the one hand starts to walk, at this time the user will feel to start to walk unable, outgoing current is less on the other hand, and it is comparatively painstaking that upward slope can be felt.
And battery-driven car is in the high speed gear excessive velocities, and user's traffic safety consciousness of much riding battery-driven car is not enough, rides with high range overdrive gear in the urban district and can bring very large potential safety hazard.
Therefore, need a kind of new speed automatic control technology, can detect in real time the driving information of battery-driven car, and automatically adjust the moving velocity of battery-driven car according to the driving information of battery-driven car, so that the current driving information of the moving velocity of battery-driven car and battery-driven car is consistent, both guarantee user's the experience of riding, guaranteed again user's riding safety.
Summary of the invention
The present invention just is being based on the problems referred to above, a kind of speed automatic control technology has been proposed, can detect in real time the driving information of battery-driven car, and automatically adjust the moving velocity of battery-driven car according to the driving information of battery-driven car, so that the current driving information of the moving velocity of battery-driven car and battery-driven car is consistent, both guarantee user's the experience of riding, guaranteed again user's riding safety.
In view of this, the present invention proposes a kind of Auto speed-control system, comprising: the driving information analytic unit, for the driving information of the described battery-driven car of Real-time Obtaining, whether needs accelerate to judge described battery-driven car according to described driving information; Motor control unit, be used for needing acceleration in the situation that described driving information analytic unit is judged, improve the rotating speed of the drive motor of described battery-driven car, to promote the moving velocity of described battery-driven car, until described moving velocity equals pre-set velocity, and in the situation that the judgement of described driving information analytic unit does not need to accelerate, keep the current rotating speed of described drive motor.
In this technical scheme, the driving information of battery-driven car of can the Real-time Obtaining user riding is analyzed, thereby determine to adjust the scheme of the speed of a motor vehicle according to current driving information, and then the speed of a motor vehicle is adjusted to driving information is consistent, thereby make the user can be with fast running in the environment of riding of smoothness, when road conditions are relatively poor, can maintain lower-speed state again, both guarantee user's the experience of riding, guarantee again user's riding safety.
In technique scheme, preferably, described driving information analytic unit comprises: the voltage detecting subelement, be used for the in real time voltage of the control handle of the described battery-driven car of detection, and judge that whether described voltage is more than or equal to predeterminated voltage; The motor speed detection sub-unit is used for the in real time rotating speed of the described drive motor of detection, judges that whether described rotating speed is more than or equal to preset rotation speed; The time interocclusal record subelement, be used for judging that at described voltage detecting subelement described voltage is more than or equal to described predeterminated voltage, and when described motor speed detection sub-unit is judged described rotating speed more than or equal to described preset rotation speed, record described voltage more than or equal to described predeterminated voltage, and described rotating speed is more than or equal to the time length of the state of described preset rotation speed; Accelerate to judge subelement, be used for described time length and Preset Time are compared, and at described time length during more than or equal to described Preset Time, judge that described battery-driven car needs to accelerate, and at described time length during less than described Preset Time, or described voltage detecting subelement is when judging described voltage less than described predeterminated voltage, or described motor speed detection sub-unit judges that described battery-driven car does not need to accelerate when judging described rotating speed less than described preset rotation speed.
In this technical scheme, only in the control of battery-driven car voltage more than or equal to predeterminated voltage, the rotating speed of drive motor is more than or equal to preset rotation speed, and battery-driven car maintains to be controlled voltage more than or equal to predeterminated voltage, the rotating speed of drive motor is more than or equal under the state of preset rotation speed during more than or equal to Preset Time, judge that just battery-driven car need to give it the gun, when above-mentioned three conditions all satisfy, illustrate that the user is with fast speed travel (the drive motor rotating speed is larger), and the user is still accelerating (to control larger voltage, the dynamics that the stubborn control of user handle is described is larger), and this situation has continued a period of time again, illustrate that so the user need to travel with acceleration mode this moment, thereby the automatic control electric motor-car accelerates, carry out manual operation and need not the user, making the user attentively control battery-driven car travels, both improve the experience of riding, improved again the safety of riding.
And in the situation that above-mentioned three conditions can not satisfy simultaneously, then battery-driven car does not give it the gun, and by the common judgement of many conditions, has improved intelligent decision result's accuracy.
Such as in battery-driven car upward slope process, even control has reached predeterminated voltage to voltage, it (is 420 to turn such as preset rotation speed that but the rotating speed of drive motor but is difficult to reach preset rotation speed, running into the uphill way rotating speed then may drop to 360 and turn), judge that battery-driven car does not give it the gun this moment so, thereby guarantee that battery-driven car is in the climbing process, drive motor has larger outgoing current, provide more high pulling torque for battery-driven car goes up a slope, make the user sensuously in the sloping process battery-driven car sufficient power is still arranged.
Again such as in the process of battery-driven car descending, even the rotating speed of drive motor has reached preset rotation speed, but when control did not reach predeterminated voltage to voltage, battery-driven car did not give it the gun yet, and had avoided the too high and potential safety hazard that causes of in descending process battery-driven car speed.
Again such as battery-driven car in the process of moving, control has all reached preset value to the rotating speed of voltage and drive motor, but time length does not reach Preset Time (that is to say that battery-driven car is in control shorter high potential and the high-revolving state of drive motor time, illustrate that the user just needs speed-raising in some highway section, and be not suitable for long distance High-speed and travel), then battery-driven car does not give it the gun automatically yet, has both guaranteed user's the experience of riding, and has guaranteed again user's riding safety.
Need to prove, above-mentioned Preset Time, predeterminated voltage, preset rotation speed all can be arranged as required by the user, thereby satisfy which kind of situation of user automatically accelerate, and which kind of situation is recovered normal speed and travelled.
In technique scheme, preferably, described voltage detecting subelement also is used at described motor control unit described moving velocity being risen to the process of described pre-set velocity, detects in real time the voltage of the control handle of described battery-driven car, and judges that whether described voltage is more than or equal to predeterminated voltage; Described motor speed detection sub-unit also is used at described motor control unit described moving velocity being risen to the process of described pre-set velocity, detects in real time the rotating speed of described drive motor, and judges that whether described rotating speed is more than or equal to preset rotation speed; And described motor control unit also is used for when described voltage detecting subelement is judged described voltage less than described predeterminated voltage, or when described motor speed detection sub-unit is judged described rotating speed less than described preset rotation speed, the rotating speed of described drive motor is down to described current rotating speed.
In this technical scheme, by in the battery-driven car accelerator, continue to detect the control of battery-driven car the rotating speed of voltage and drive motor, and controlling voltage less than predeterminated voltage, or the rotating speed of drive motor is during less than preset rotation speed, the rotating speed of drive motor is down to current rotating speed (rotating speed before accelerating), such as battery-driven car after automatic decision accelerates, run into uphill way, battery-driven car will no longer accelerate this moment so, but to travel than low velocity, so that the larger electric current of output, providing more, high pulling torque goes up a slope, again such as battery-driven car after automatic decision accelerates, run into the descending highway section, battery-driven car also will no longer accelerate this moment so, but travelling than low velocity, thereby guaranteed riding safety in user's descending process.
Need to prove, the decision state of automatically accelerating is that the user is controlled, and the user can be controlled at and be in all the time acceleration mode under any condition, also can be arranged on and not enter acceleration mode under any condition.
In above-mentioned arbitrary technical scheme, preferably, also comprise: current detecting unit is used for the in real time outgoing current of the described drive motor of detection; Display unit is used for described outgoing current is shown.
In this technical scheme, the moment of torsion positive correlation that the outgoing current of drive motor and drive motor provide, and the acceleration/accel positive correlation of moment of torsion and battery-driven car, thereby the electric current by the display driver motor, can make running state (acceleration mode) information of battery-driven car obtain representing more intuitively, make things convenient for the user to the control of battery-driven car.
In above-mentioned arbitrary technical scheme, preferably, also comprise: the electric weight detecting unit, be used for detecting in real time the dump energy of the power supply of described battery-driven car, when described dump energy is lower than default electric weight, record working on the time of described drive motor, and judge that whether the described time that works on is more than or equal to default work-hours; Power control unit, be used for when described electric weight detecting unit judges that the described time that works on is more than or equal to default work-hours, automatically the described power supply of control is powered to described drive motor with predeterminated voltage, and wherein, described predeterminated voltage is lower than the rated voltage of described power supply.
In this technical scheme, if the current dump energy of battery-driven car is lower than default electric weight, when being the electric weight deficiency of electric vehicle power sources, judge by the time of working on of judging drive motor whether the user needs to continue a period of time of riding, need to continue to ride in the situation that determine the user, automatically reduce the output voltage of power supply, can supply with the battery-driven car larger distance of riding to guarantee dump energy.Specifically, when the dump energy of power supply is lower than default electric weight, can send low electric weight alerting signal, at this moment, if battery-driven car continues to travel, and running time (being working on the time of drive motor) is greater than default work-hours, then can judge the user needs battery-driven car to continue to travel, thereby automatically reduce the output voltage of electric vehicle power sources, and at power supply to the voltage of drive motor power supply during less than rated voltage, can guarantee the battery-driven car larger distance of travelling, guarantee user's the distance of riding.
The application has also proposed a kind of battery-driven car, comprises above-mentioned each described Auto speed-control system.
The application has also proposed a kind of speed automatic control method, comprising: step 202, and the driving information of the described battery-driven car of Real-time Obtaining, whether needs accelerate to judge described battery-driven car according to described driving information; Step 204 if need to accelerate, then improves the rotating speed of the drive motor of described battery-driven car, to promote the moving velocity of described battery-driven car, until described moving velocity equals pre-set velocity; Step 206 if do not need to accelerate, is then kept the current rotating speed of described drive motor.
In this technical scheme, the driving information of battery-driven car of can the Real-time Obtaining user riding is analyzed, thereby determine to adjust the scheme of the speed of a motor vehicle according to current driving information, and then the speed of a motor vehicle is adjusted to driving information is consistent, thereby make the user can be with fast running in the environment of riding of smoothness, when road conditions are relatively poor, can maintain lower-speed state again, both guarantee user's the experience of riding, guarantee again user's riding safety.
In above-mentioned arbitrary technical scheme, preferably, described step 202 comprises: step 2022, detect the voltage of control handle of described battery-driven car and the rotating speed of described drive motor in real time, whether judge described voltage more than or equal to predeterminated voltage, and whether described rotating speed is more than or equal to preset rotation speed; Step 2024, if described voltage is more than or equal to described predeterminated voltage, and described rotating speed then record described voltage more than or equal to described predeterminated voltage, and described rotating speed is more than or equal to the time length of the state of described preset rotation speed more than or equal to described preset rotation speed; Step 2026, described time length and Preset Time are compared, if described time length is more than or equal to described Preset Time, judge that then described battery-driven car needs to accelerate, if described time length is less than described Preset Time, or described voltage is less than described predeterminated voltage, or described rotating speed judges then that less than described preset rotation speed described battery-driven car does not need to accelerate.
In this technical scheme, only in the control of battery-driven car voltage more than or equal to predeterminated voltage, the rotating speed of drive motor is more than or equal to preset rotation speed, and battery-driven car maintains to be controlled voltage more than or equal to predeterminated voltage, the rotating speed of drive motor is more than or equal under the state of preset rotation speed during more than or equal to Preset Time, judge that just battery-driven car need to give it the gun, when above-mentioned three conditions all satisfy, illustrate that the user is with fast speed travel (the drive motor rotating speed is larger), and the user is still accelerating (to control larger voltage, the dynamics that the stubborn control of user handle is described is larger), and this situation has continued a period of time again, illustrate that so the user need to travel with acceleration mode this moment, thereby the automatic control electric motor-car accelerates, carry out manual operation and need not the user, making the user attentively control battery-driven car travels, both improve the experience of riding, improved again the safety of riding.
And in the situation that above-mentioned three conditions can not satisfy simultaneously, then battery-driven car does not give it the gun, and by the common judgement of many conditions, has improved intelligent decision result's accuracy.
Such as in battery-driven car upward slope process, even control has reached predeterminated voltage to voltage, it (is 420 to turn such as preset rotation speed that but the rotating speed of drive motor but is difficult to reach preset rotation speed, running into the uphill way rotating speed then may drop to 360 and turn), judge that battery-driven car does not give it the gun this moment so, thereby guarantee that battery-driven car is in the climbing process, drive motor has larger outgoing current, provide more high pulling torque for battery-driven car goes up a slope, make the user sensuously in the sloping process battery-driven car sufficient power is still arranged.
Again such as in the process of battery-driven car descending, even the rotating speed of drive motor has reached preset rotation speed, but when control did not reach predeterminated voltage to voltage, battery-driven car did not give it the gun yet, and had avoided the too high and potential safety hazard that causes of in descending process battery-driven car speed.
Again such as battery-driven car in the process of moving, control has all reached preset value to the rotating speed of voltage and drive motor, but time length does not reach Preset Time (that is to say that battery-driven car is in control shorter high potential and the high-revolving state of drive motor time, illustrate that the user just needs speed-raising in some highway section, and be not suitable for long distance High-speed and travel), then battery-driven car does not give it the gun automatically yet, has both guaranteed user's the experience of riding, and has guaranteed again user's riding safety.
Need to prove, above-mentioned Preset Time, predeterminated voltage, preset rotation speed all can be arranged as required by the user, thereby satisfy which kind of situation of user automatically accelerate, and which kind of situation is recovered normal speed and travelled.
In above-mentioned arbitrary technical scheme, preferably, described step 204 also comprises: rise in the process of described pre-set velocity at described moving velocity, the voltage of the control handle of the described battery-driven car of real-time detection and the rotating speed of described drive motor, judge that whether described voltage is more than or equal to described predeterminated voltage, and whether described rotating speed is more than or equal to described preset rotation speed, if described voltage is less than described predeterminated voltage, or described rotating speed then is down to the rotating speed of described drive motor described current rotating speed less than described preset rotation speed.
In this technical scheme, by in the battery-driven car accelerator, continue to detect the control of battery-driven car the rotating speed of voltage and drive motor, and controlling voltage less than predeterminated voltage, or the rotating speed of drive motor is during less than preset rotation speed, the rotating speed of drive motor is down to current rotating speed (rotating speed before accelerating), such as battery-driven car after automatic decision accelerates, run into uphill way, battery-driven car will no longer accelerate this moment so, but to travel than low velocity, so that the larger electric current of output, providing more, high pulling torque goes up a slope, again such as battery-driven car after automatic decision accelerates, run into the descending highway section, battery-driven car also will no longer accelerate this moment so, but travelling than low velocity, thereby guaranteed riding safety in user's descending process.
Need to prove, the decision state of automatically accelerating is that the user is controlled, and the user can be controlled at and be in all the time acceleration mode under any condition, also can be arranged on and not enter acceleration mode under any condition.
In above-mentioned arbitrary technical scheme, preferably, also comprise: the dump energy that detects in real time the power supply of described battery-driven car, when described dump energy is lower than default electric weight, record working on the time of described drive motor, described time and the default work-hours of working on compared, and in described time that works on during more than or equal to default work-hours, automatically the described power supply of control is powered to described drive motor with predeterminated voltage, wherein, described predeterminated voltage is lower than the rated voltage of described power supply.
In this technical scheme, if the current dump energy of battery-driven car is lower than default electric weight, when being the electric weight deficiency of electric vehicle power sources, judge by the time of working on of judging drive motor whether the user needs to continue a period of time of riding, need to continue to ride in the situation that determine the user, automatically reduce the output voltage of power supply, can supply with the battery-driven car larger distance of riding to guarantee dump energy.Specifically, when the dump energy of power supply is lower than default electric weight, can send low electric weight alerting signal, at this moment, if battery-driven car continues to travel, and running time (being working on the time of drive motor) is greater than default work-hours, then can judge the user needs battery-driven car to continue to travel, thereby automatically reduce the output voltage of electric vehicle power sources, and at power supply to the voltage of drive motor power supply during less than rated voltage, can guarantee the battery-driven car larger distance of travelling, guarantee user's the distance of riding.
By above technical scheme, can detect in real time the driving information of battery-driven car, and automatically adjust the moving velocity of battery-driven car according to the driving information of battery-driven car, so that the current driving information of the moving velocity of battery-driven car and battery-driven car is consistent, both guarantee user's the experience of riding, guaranteed again user's riding safety.
Description of drawings
Fig. 1 shows the according to an embodiment of the invention block diagram of Auto speed-control system;
Fig. 2 shows the according to an embodiment of the invention diagram of circuit of speed automatic control method;
Fig. 3 shows according to an embodiment of the invention gear selection schematic diagram;
Fig. 4 shows electric current indication liquid crystal gauge panel schematic diagram according to an embodiment of the invention;
Fig. 5 shows electric current indication liquid crystal gauge panel schematic diagram according to another embodiment of the invention.
The specific embodiment
In order more clearly to understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments the present invention is further described in detail.Need to prove, in the situation that do not conflict, the application's embodiment and the feature among the embodiment can make up mutually.
A lot of details have been set forth in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not subjected to the restriction of following public specific embodiment.
Fig. 1 shows the according to an embodiment of the invention block diagram of Auto speed-control system.
As shown in Figure 1, Auto speed-control system 100 according to an embodiment of the invention, comprising: driving information analytic unit 102, and for the driving information of Real-time Obtaining battery-driven car, whether needs accelerate to judge battery-driven car according to driving information; Motor control unit 104, be used for needing acceleration in the situation that the information analysis unit 102 that travels is judged, improve the rotating speed of the drive motor of battery-driven car, to promote the moving velocity of battery-driven car, until moving velocity equals pre-set velocity, and in the situation that information analysis unit 102 judgements of travelling do not need to accelerate, keep the current rotating speed of drive motor.
The driving information of battery-driven car of can the Real-time Obtaining user riding is analyzed, thereby determine to adjust the scheme of the speed of a motor vehicle according to current driving information, and then the speed of a motor vehicle is adjusted to driving information is consistent, thereby make the user can be with fast running in the environment of riding of smoothness, when road conditions are relatively poor, can maintain lower-speed state again, both guarantee user's the experience of riding, guaranteed again user's riding safety.
Preferably, driving information analytic unit 102 comprises: voltage detecting subelement 1022, be used for the in real time voltage of the control handle of detection battery-driven car, and judge that whether voltage is more than or equal to predeterminated voltage; Motor speed detection sub-unit 1024 is used for the in real time rotating speed of detection drive motor, judges that whether rotating speed is more than or equal to preset rotation speed; The time interocclusal record subelement 1026, be used for judging that at voltage detecting subelement 1022 voltage is more than or equal to predeterminated voltage, and when the motor speed detection sub-unit is judged rotating speed more than or equal to preset rotation speed, recording voltage is more than or equal to predeterminated voltage, and rotating speed is more than or equal to the time length of the state of preset rotation speed; Accelerate to judge subelement 1028, be used for time length and Preset Time are compared, and at time length during more than or equal to Preset Time, judge that battery-driven car needs to accelerate, and at time length during less than Preset Time, or voltage detecting subelement 1022 is when judging voltages less than predeterminated voltage, or motor speed detection sub-unit 1024 judges that battery-driven car does not need to accelerate when judging rotating speeds less than preset rotation speed.
Only in the control of battery-driven car voltage more than or equal to predeterminated voltage, the rotating speed of drive motor is more than or equal to preset rotation speed, and battery-driven car maintains to be controlled voltage more than or equal to predeterminated voltage, the rotating speed of drive motor is more than or equal under the state of preset rotation speed during more than or equal to Preset Time, judge that just battery-driven car need to give it the gun, when above-mentioned three conditions all satisfy, illustrate that the user is with fast speed travel (the drive motor rotating speed is larger), and the user is still accelerating (to control larger voltage, the dynamics that the stubborn control of user handle is described is larger), and this situation has continued a period of time again, illustrate that so the user need to travel with acceleration mode this moment, thereby the automatic control electric motor-car accelerates, carry out manual operation and need not the user, making the user attentively control battery-driven car travels, both improve the experience of riding, improved again the safety of riding.
And in the situation that above-mentioned three conditions can not satisfy simultaneously, then battery-driven car does not give it the gun, and by the common judgement of many conditions, has improved intelligent decision result's accuracy.
Such as in battery-driven car upward slope process, even control has reached predeterminated voltage to voltage, it (is 420 to turn such as preset rotation speed that but the rotating speed of drive motor but is difficult to reach preset rotation speed, running into the uphill way rotating speed then may drop to 360 and turn), judge that battery-driven car does not give it the gun this moment so, thereby guarantee that battery-driven car is in the climbing process, drive motor has larger outgoing current, provide more high pulling torque for battery-driven car goes up a slope, make the user sensuously in the sloping process battery-driven car sufficient power is still arranged.
Again such as in the process of battery-driven car descending, even the rotating speed of drive motor has reached preset rotation speed, but when control did not reach predeterminated voltage to voltage, battery-driven car did not give it the gun yet, and had avoided the too high and potential safety hazard that causes of in descending process battery-driven car speed.
Again such as battery-driven car in the process of moving, control has all reached preset value to the rotating speed of voltage and drive motor, but time length does not reach Preset Time (that is to say that battery-driven car is in control shorter high potential and the high-revolving state of drive motor time, illustrate that the user just needs speed-raising in some highway section, and be not suitable for long distance High-speed and travel), then battery-driven car does not give it the gun automatically yet, has both guaranteed user's the experience of riding, and has guaranteed again user's riding safety.
Need to prove, above-mentioned Preset Time, predeterminated voltage, preset rotation speed all can be arranged as required by the user, thereby satisfy which kind of situation of user automatically accelerate, and which kind of situation is recovered normal speed and travelled.
Preferably, voltage detecting subelement 1022 also is used at motor control unit 104 moving velocity being risen to the process of pre-set velocity, detects in real time the voltage of the control handle of battery-driven car, and judges that whether voltage is more than or equal to predeterminated voltage; Motor speed detection sub-unit 1024 also is used at motor control unit 104 moving velocity being risen to the process of pre-set velocity, detects in real time the rotating speed of drive motor, and judges that whether rotating speed is more than or equal to preset rotation speed; And motor control unit 104 also is used for when voltage detecting subelement 1022 is judged voltages less than predeterminated voltage, or when motor speed detection sub-unit 1024 is judged rotating speeds less than preset rotation speed, the rotating speed of drive motor is down to current rotating speed.
By in the battery-driven car accelerator, continue to detect the control of battery-driven car the rotating speed of voltage and drive motor, and controlling voltage less than predeterminated voltage, or the rotating speed of drive motor is during less than preset rotation speed, the rotating speed of drive motor is down to current rotating speed (rotating speed before accelerating), such as battery-driven car after automatic decision accelerates, run into uphill way, battery-driven car will no longer accelerate this moment so, but to travel than low velocity, in order to export larger electric current, provide more high pulling torque to go up a slope, again such as battery-driven car after automatic decision accelerates, run into the descending highway section, battery-driven car also will no longer accelerate this moment so, but travelling than low velocity, thereby guarantee the riding safety in user's descending process.
Need to prove, the decision state of automatically accelerating is that the user is controlled, and the user can be controlled at and be in all the time acceleration mode under any condition, also can be arranged on and not enter acceleration mode under any condition.
Preferably, also comprise: current detecting unit 106 is used for the in real time outgoing current of detection drive motor; Display unit 108 is used for outgoing current is shown.
The moment of torsion positive correlation that the outgoing current of drive motor and drive motor provide, and the acceleration/accel positive correlation of moment of torsion and battery-driven car, thereby the electric current by the display driver motor, can make running state (acceleration mode) information of battery-driven car obtain representing more intuitively, make things convenient for the user to the control of battery-driven car.
Preferably, also comprise: electric weight detecting unit 110 is used for the in real time dump energy of the power supply of detection battery-driven car, when dump energy is lower than default electric weight, working on the time of record drive motor, and whether judgement works on the time more than or equal to default work-hours; Power control unit 112 is used for when the electric weight detecting unit judges that the time that works on is more than or equal to default work-hours, and automatic control power supply is powered to drive motor with predeterminated voltage, and wherein, predeterminated voltage is lower than the rated voltage of power supply.
If the current dump energy of battery-driven car is lower than default electric weight, when being the electric weight deficiency of electric vehicle power sources, judge by the time of working on of judging drive motor whether the user needs to continue a period of time of riding, need to continue to ride in the situation that determine the user, automatically reduce the output voltage of power supply, can supply with the battery-driven car larger distance of riding to guarantee dump energy.Specifically, when the dump energy of power supply is lower than default electric weight, can send low electric weight alerting signal, at this moment, if battery-driven car continues to travel, and running time (being working on the time of drive motor) is greater than default work-hours, then can judge the user needs battery-driven car to continue to travel, thereby automatically reduce the output voltage of electric vehicle power sources, and at power supply to the voltage of drive motor power supply during less than rated voltage, can guarantee the battery-driven car larger distance of travelling, guarantee user's the distance of riding.
The application has also proposed a kind of battery-driven car, comprises above-mentioned each described Auto speed-control system.
Fig. 2 shows the according to an embodiment of the invention diagram of circuit of speed automatic control method.
As shown in Figure 2, speed automatic control method according to an embodiment of the invention comprises: step 202, and the driving information of Real-time Obtaining battery-driven car, whether needs accelerate to judge battery-driven car according to driving information; Step 204 if need to accelerate, then improves the rotating speed of the drive motor of battery-driven car, to promote the moving velocity of battery-driven car, until moving velocity equals pre-set velocity; Step 206 if do not need to accelerate, is then kept the current rotating speed of drive motor.
The driving information of battery-driven car of can the Real-time Obtaining user riding is analyzed, thereby determine to adjust the scheme of the speed of a motor vehicle according to current driving information, and then the speed of a motor vehicle is adjusted to driving information is consistent, thereby make the user can be with fast running in the environment of riding of smoothness, when road conditions are relatively poor, can maintain lower-speed state again, both guarantee user's the experience of riding, guaranteed again user's riding safety.
Preferably, step 202 comprises: step 2022, detect in real time the voltage of control handle of battery-driven car and the rotating speed of drive motor, and whether judge voltage more than or equal to predeterminated voltage, and whether rotating speed is more than or equal to preset rotation speed; Step 2024, if voltage more than or equal to predeterminated voltage, and rotating speed is more than or equal to preset rotation speed, then recording voltage is more than or equal to predeterminated voltage, and rotating speed is more than or equal to the time length of the state of preset rotation speed; Step 2026 compares time length and Preset Time, if time length is more than or equal to Preset Time, judge that then battery-driven car needs to accelerate, if time length less than Preset Time, or voltage is less than predeterminated voltage, or rotating speed judges then that less than preset rotation speed battery-driven car does not need to accelerate.
Only in the control of battery-driven car voltage more than or equal to predeterminated voltage, the rotating speed of drive motor is more than or equal to preset rotation speed, and battery-driven car maintains to be controlled voltage more than or equal to predeterminated voltage, the rotating speed of drive motor is more than or equal under the state of preset rotation speed during more than or equal to Preset Time, judge that just battery-driven car need to give it the gun, when above-mentioned three conditions all satisfy, illustrate that the user is with fast speed travel (the drive motor rotating speed is larger), and the user is still accelerating (to control larger voltage, the dynamics that the stubborn control of user handle is described is larger), and this situation has continued a period of time again, illustrate that so the user need to travel with acceleration mode this moment, thereby the automatic control electric motor-car accelerates, carry out manual operation and need not the user, making the user attentively control battery-driven car travels, both improve the experience of riding, improved again the safety of riding.
And in the situation that above-mentioned three conditions can not satisfy simultaneously, then battery-driven car does not give it the gun, and by the common judgement of many conditions, has improved intelligent decision result's accuracy.
Such as in battery-driven car upward slope process, even control has reached predeterminated voltage to voltage, it (is 420 to turn such as preset rotation speed that but the rotating speed of drive motor but is difficult to reach preset rotation speed, running into the uphill way rotating speed then may drop to 360 and turn), judge that battery-driven car does not give it the gun this moment so, thereby guarantee that battery-driven car is in the climbing process, drive motor has larger outgoing current, provide more high pulling torque for battery-driven car goes up a slope, make the user sensuously in the sloping process battery-driven car sufficient power is still arranged.
Again such as in the process of battery-driven car descending, even the rotating speed of drive motor has reached preset rotation speed, but when control did not reach predeterminated voltage to voltage, battery-driven car did not give it the gun yet, and had avoided the too high and potential safety hazard that causes of in descending process battery-driven car speed.
Again such as battery-driven car in the process of moving, control has all reached preset value to the rotating speed of voltage and drive motor, but time length does not reach Preset Time (that is to say that battery-driven car is in control shorter high potential and the high-revolving state of drive motor time, illustrate that the user just needs speed-raising in some highway section, and be not suitable for long distance High-speed and travel), then battery-driven car does not give it the gun automatically yet, has both guaranteed user's the experience of riding, and has guaranteed again user's riding safety.
Need to prove, above-mentioned Preset Time, predeterminated voltage, preset rotation speed all can be arranged as required by the user, thereby satisfy which kind of situation of user automatically accelerate, and which kind of situation is recovered normal speed and travelled.
Preferably, step 204 also comprises: travelling speed rising to the process of pre-set velocity, the voltage of the control handle of real-time detection battery-driven car and the rotating speed of drive motor, judge that whether voltage is more than or equal to predeterminated voltage, and whether rotating speed is more than or equal to preset rotation speed, if voltage is less than predeterminated voltage, or rotating speed then is down to current rotating speed with the rotating speed of drive motor less than preset rotation speed.
By in the battery-driven car accelerator, continue to detect the control of battery-driven car the rotating speed of voltage and drive motor, and controlling voltage less than predeterminated voltage, or the rotating speed of drive motor is during less than preset rotation speed, the rotating speed of drive motor is down to current rotating speed (rotating speed before accelerating), such as battery-driven car after automatic decision accelerates, run into uphill way, battery-driven car will no longer accelerate this moment so, but to travel than low velocity, in order to export larger electric current, provide more high pulling torque to go up a slope, again such as battery-driven car after automatic decision accelerates, run into the descending highway section, battery-driven car also will no longer accelerate this moment so, but travelling than low velocity, thereby guarantee the riding safety in user's descending process.
Need to prove, the decision state of automatically accelerating is that the user is controlled, and the user can be controlled at and be in all the time acceleration mode under any condition, also can be arranged on and not enter acceleration mode under any condition.
Preferably, also comprise: the dump energy that detects in real time the power supply of battery-driven car, when dump energy is lower than default electric weight, working on the time of record drive motor, to work on time and default work-hours compares, and in time of working on during more than or equal to default work-hours, automatic control power supply is powered to drive motor with predeterminated voltage, wherein, predeterminated voltage is lower than the rated voltage of power supply.
If the current dump energy of battery-driven car is lower than default electric weight, when being the electric weight deficiency of electric vehicle power sources, judge by the time of working on of judging drive motor whether the user needs to continue a period of time of riding, need to continue to ride in the situation that determine the user, automatically reduce the output voltage of power supply, can supply with the battery-driven car larger distance of riding to guarantee dump energy.Specifically, when the dump energy of power supply is lower than default electric weight, can send low electric weight alerting signal, at this moment, if battery-driven car continues to travel, and running time (being working on the time of drive motor) is greater than default work-hours, then can judge the user needs battery-driven car to continue to travel, thereby automatically reduce the output voltage of electric vehicle power sources, and at power supply to the voltage of drive motor power supply during less than rated voltage, can guarantee the battery-driven car larger distance of travelling, guarantee user's the distance of riding.
Fig. 3 shows according to an embodiment of the invention gear selection schematic diagram.
As shown in Figure 3, gear can be divided into three gears such as " power saving " shelves 302A, " climbing " shelves 302B, " automatically " shelves 302C according to an embodiment of the invention, gear switch button 304 is used for carrying out cyclic switching between three gears, be in " climbing " shelves 302B such as current gear, the lamp at " climbing " shelves 302B place is lighted so, presses the button 304, and gear will be changed to " automatically " shelves 302C, press the button 304, gear will be changed to " power saving " shelves 302A again.Wherein " power saving " shelves 302A is adapted at travelling on the pulsation-free road surface, and " climbing " shelves 302B is applicable to go up a slope and rides, and when battery-driven car is in " automatically " shelves 302C, then carries out speed according to method shown in Figure 2 and automatically controls.
When user selection " automatically " shelves 302C, battery-driven car can be according to current driving information, whether the automatic decision battery-driven car needs to accelerate or do not need is accelerated, in the situation that needs accelerate, improve the rotating speed of the drive motor of battery-driven car, and then promote the moving velocity of battery-driven car, until moving velocity equals pre-set velocity, when not needing to accelerate, then keep the current rotating speed of drive motor.
Fig. 4 shows electric current indication liquid crystal gauge panel schematic diagram according to an embodiment of the invention.
As shown in Figure 4, electric current indication liquid crystal gauge panel according to an embodiment of the invention comprises: gear viewing area 402, can show presently used gear, and wherein, gear comprises " power saving " shelves, " climbing " shelves and " automatically " shelves; The motoring condition time length viewing area 404(of current battery-driven car is that the drive motor rotating speed reaches pre-set velocity and control reaches the time that predeterminated voltage keeps to voltage), when selecting " automatically " shelves, and the motoring condition holding time of battery-driven car, the control battery-driven car accelerated during greater than Preset Time; Show stroke zone 406, the user can learn the stroke that has travelled exactly according to this zone; The electric weight viewing area 408 of power supply, the user can determine power supply current residual electric weight according to this regional content, the required road thereby whether the estimation dump energy has enough travelled; The outgoing current viewing area 410 of drive motor, because the outgoing current of drive motor and the moment of torsion positive correlation that drive motor provides, moment of torsion again with the acceleration/accel positive correlation of battery-driven car, thereby the user can learn exactly according to drive current the acceleration mode of battery-driven car; Speed display zone 412 is for the current driving speed that shows battery-driven car.
Fig. 5 shows electric current indication liquid crystal gauge panel schematic diagram according to another embodiment of the invention.
As shown in Figure 5, electric current indication liquid crystal gauge panel according to another embodiment of the invention comprises: gear viewing area 502, can show presently used gear, and wherein, gear comprises " power saving " shelves, " climbing " shelves and " automatically " shelves; The motoring condition time length viewing area 504(of current battery-driven car to be the drive motor rotating speed keep voltage more than or equal to pre-set velocity and control more than or equal to predeterminated voltage time), when selecting " automatically " shelves, and the motoring condition holding time of battery-driven car, the control battery-driven car accelerated during greater than Preset Time; Show stroke zone 506, the user can learn the stroke that has travelled exactly according to this zone; The electric weight viewing area 508 of power supply, the user can determine power supply current residual electric weight according to this regional content, the required road thereby whether the estimation dump energy has enough travelled; The outgoing current viewing area 510 of drive motor, because the outgoing current of drive motor and the moment of torsion positive correlation that drive motor provides, moment of torsion by with the acceleration/accel positive correlation of battery-driven car, thereby the user can learn exactly according to drive current the acceleration mode of battery-driven car; Speed display zone 512 is used for showing current real-time speed; Fumction display zone 514 is used to indicate the status information of current battery-driven car, such as left-hand rotation steering indicating light, passing light open, country beam is opened, the steering indicating light etc. of turning right; The output voltage viewing area 516 of drive motor, the real-time voltage that shows electric vehicle power sources, so that the user accurately judges the current dump energy of power supply (often there is error in the dump energy percentum that electric weight viewing area 508 shows with the percentum of real surplus electric weight), when the battery-driven car dump energy is not enough, if judge that the user need to continue to ride, then in the situation that the drive motor rating horsepower is certain, reduce output voltage, can increase outgoing current, and electric current becomes positive correlation with moment of torsion, and then battery-driven car will be travelled with certain acceleration/accel.
More than be described with reference to the accompanying drawings technical scheme of the present invention, consider in the prior art, can't effectively manage the speed of battery-driven car, can not satisfy user's requirement to battery-driven car speed under different condition of road surfaces on the one hand, also can't guarantee on the other hand user's riding safety.Therefore the present invention proposes a kind of new speed automatic control technology, can detect in real time the driving information of battery-driven car, and automatically adjust the moving velocity of battery-driven car according to the driving information of battery-driven car, so that the current driving information of the moving velocity of battery-driven car and battery-driven car is consistent, both guarantee user's the experience of riding, guaranteed again user's riding safety.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an Auto speed-control system is characterized in that, comprising:
The driving information analytic unit, for the driving information of the described battery-driven car of Real-time Obtaining, whether needs accelerate to judge described battery-driven car according to described driving information;
Motor control unit, be used for needing acceleration in the situation that described driving information analytic unit is judged, improve the rotating speed of the drive motor of described battery-driven car, to promote the moving velocity of described battery-driven car, until described moving velocity equals pre-set velocity, and in the situation that the judgement of described driving information analytic unit does not need to accelerate, keep the current rotating speed of described drive motor.
2. Auto speed-control system according to claim 1 is characterized in that, described driving information analytic unit comprises:
The voltage detecting subelement is used for the in real time voltage of the control handle of the described battery-driven car of detection, judges that whether described voltage is more than or equal to predeterminated voltage;
The motor speed detection sub-unit is used for the in real time rotating speed of the described drive motor of detection, judges that whether described rotating speed is more than or equal to preset rotation speed;
The time interocclusal record subelement, be used for judging that at described voltage detecting subelement described voltage is more than or equal to described predeterminated voltage, and when described motor speed detection sub-unit is judged described rotating speed more than or equal to described preset rotation speed, record described voltage more than or equal to described predeterminated voltage, and described rotating speed is more than or equal to the time length of the state of described preset rotation speed;
Accelerate to judge subelement, be used for described time length and Preset Time are compared, and at described time length during more than or equal to described Preset Time, judge that described battery-driven car needs to accelerate, and at described time length during less than described Preset Time, or described voltage detecting subelement is when judging described voltage less than described predeterminated voltage, or described motor speed detection sub-unit judges that described battery-driven car does not need to accelerate when judging described rotating speed less than described preset rotation speed.
3. Auto speed-control system according to claim 2, it is characterized in that, described voltage detecting subelement also is used at described motor control unit described moving velocity being risen to the process of described pre-set velocity, detect in real time the voltage of the control handle of described battery-driven car, and judge that whether described voltage is more than or equal to predeterminated voltage;
Described motor speed detection sub-unit also is used at described motor control unit described moving velocity being risen to the process of described pre-set velocity, detects in real time the rotating speed of described drive motor, and judges that whether described rotating speed is more than or equal to preset rotation speed; And
Described motor control unit also is used for when described voltage detecting subelement is judged described voltage less than described predeterminated voltage, or when described motor speed detection sub-unit is judged described rotating speed less than described preset rotation speed, the rotating speed of described drive motor is down to described current rotating speed.
4. each described Auto speed-control system in 3 according to claim 1 is characterized in that, also comprises:
Current detecting unit is used for the in real time outgoing current of the described drive motor of detection;
Display unit is used for described outgoing current is shown.
5. each described Auto speed-control system in 3 according to claim 1 is characterized in that, also comprises:
The electric weight detecting unit, be used for detecting in real time the dump energy of the power supply of described battery-driven car, when described dump energy is lower than default electric weight, records working on the time of described drive motor, and judge that whether the described time that works on is more than or equal to default work-hours;
Power control unit, be used for when described electric weight detecting unit judges that the described time that works on is more than or equal to default work-hours, automatically the described power supply of control is powered to described drive motor with predeterminated voltage, and wherein, described predeterminated voltage is lower than the rated voltage of described power supply.
6. a battery-driven car is characterized in that, comprises each described Auto speed-control system in the claim 1 to 5.
7. a speed automatic control method is characterized in that, comprising:
Step 202, the driving information of the described battery-driven car of Real-time Obtaining, whether needs accelerate to judge described battery-driven car according to described driving information;
Step 204 if need to accelerate, then improves the rotating speed of the drive motor of described battery-driven car, to promote the moving velocity of described battery-driven car, until described moving velocity equals pre-set velocity;
Step 206 if do not need to accelerate, is then kept the current rotating speed of described drive motor.
8. speed automatic control method according to claim 7 is characterized in that, described step 202 comprises:
Step 2022 detects the voltage of control handle of described battery-driven car and the rotating speed of described drive motor in real time, whether judge described voltage more than or equal to predeterminated voltage, and whether described rotating speed is more than or equal to preset rotation speed;
Step 2024, if described voltage is more than or equal to described predeterminated voltage, and described rotating speed then record described voltage more than or equal to described predeterminated voltage, and described rotating speed is more than or equal to the time length of the state of described preset rotation speed more than or equal to described preset rotation speed;
Step 2026, described time length and Preset Time are compared, if described time length is more than or equal to described Preset Time, judge that then described battery-driven car needs to accelerate, if described time length is less than described Preset Time, or described voltage is less than described predeterminated voltage, or described rotating speed judges then that less than described preset rotation speed described battery-driven car does not need to accelerate.
9. speed automatic control method according to claim 8, it is characterized in that, described step 204 also comprises: rise in the process of described pre-set velocity at described moving velocity, the voltage of the control handle of the described battery-driven car of real-time detection and the rotating speed of described drive motor, judge that whether described voltage is more than or equal to described predeterminated voltage, and whether described rotating speed is more than or equal to described preset rotation speed, if described voltage is less than described predeterminated voltage, or described rotating speed then is down to the rotating speed of described drive motor described current rotating speed less than described preset rotation speed.
10. each described speed automatic control method in 9 according to claim 7, it is characterized in that, also comprise: the dump energy that detects in real time the power supply of described battery-driven car, when described dump energy is lower than default electric weight, record working on the time of described drive motor, described time and the default work-hours of working on compared, and in described time that works on during more than or equal to default work-hours, automatically the described power supply of control is powered to described drive motor with predeterminated voltage, wherein, described predeterminated voltage is lower than the rated voltage of described power supply.
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Denomination of invention: Automatic speed control system, method and electric vehicle Effective date of registration: 20230207 Granted publication date: 20150805 Pledgee: Bank of China Limited by Share Ltd. Development Zone Jinhua subbranch Pledgor: ZHEJIANG LUYUAN ELECTRIC VEHICLE Co.,Ltd. Registration number: Y2023330000297 |
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Denomination of invention: Speed automatic control system, method, and electric vehicle Granted publication date: 20150805 Pledgee: Bank of China Limited by Share Ltd. Development Zone Jinhua subbranch Pledgor: ZHEJIANG LUYUAN ELECTRIC VEHICLE Co.,Ltd. Registration number: Y2024980010933 |