CN201317277Y - Electric vehicle controller - Google Patents
Electric vehicle controller Download PDFInfo
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- CN201317277Y CN201317277Y CNU2008201421239U CN200820142123U CN201317277Y CN 201317277 Y CN201317277 Y CN 201317277Y CN U2008201421239 U CNU2008201421239 U CN U2008201421239U CN 200820142123 U CN200820142123 U CN 200820142123U CN 201317277 Y CN201317277 Y CN 201317277Y
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- accelerator
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- electric vehicle
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Abstract
The utility model provides an electric vehicle controller, which comprises a first accelerator power supply switching circuit, a second accelerator power supply switching circuit, an accelerator failure detection circuit, an accelerator signal acquisition circuit, a logic input circuit and a singlechip system; the first accelerator power supply switching circuit and the second accelerator power supply switching circuit are used for supplying power to accelerators of different types; the accelerator failure detection circuit is used for detecting the working state of an accelerator; the accelerator signal acquisition circuit is used for judging the type of a switched-in accelerator by utilizing the voltage detected by an accelerator tap; the controller is enabled to enter an accelerator type matching program or an accelerator self-learning program through the operation on the logic input circuit; and the singlechip system comprises a CPU, an A/D conversion module and a storage unit, and accomplishes the judgement on the types of accelerators, the confirmation of the working states of accelerators and the digital to analog conversion and storage of signal data on the basis of the input signals. The utility model is provided with the function of accelerator autoadaptation learning, and has the advantages of convenient debugging and maintenance, low cost, low failure rate, safety and reliability.
Description
Technical field
The utility model relates to a kind of electric vehicle controller, and more particularly, it relates to a kind of electric vehicle controller with accelerator adaptive learning function.
Background technology
At present domestic and international elec. vehicle, the mode that generally adopts accelerator to connect controller realizes the level and smooth control of motor speed and torque.Controller institute bonded assembly accelerator type is often different, if any potential device formula, induction type, Hall-type etc.; Same type accelerator, the mechanical characteristics characteristic is often different with electrical performance characteristics, the unified standards of neither one such as micro-switch mechanical trip, power supply voltage, effective output area; Even same specification accelerator, its parameter also has certain discreteness; After same accelerator uses a period of time, its electrical characteristics (as micro-switch stroke and output area and range) are changed to a certain extent because physical construction wearing and tearing and electrical equipment are aging.
When existing controller is connected coupling with the accelerator of various situations, there is following defective:
1. dissimilar accelerator or need join different controllers or need carry out different software to controller and manually be provided with, the coupling when this installs to controller, debugging have brought difficulty.
2. dissimilar accelerators owing to there is not unified standard, is made mistakes during wiring when being connected with controller easily, and the meeting that has makes controller enter the accelerator guard mode and can't use, even may burn controller.
3. accelerator and controller matching property are bad, the driver and conductor feel to quicken and the deceleration comfort level poor, drive not nimblely, safety misadventure appears easily; Also can increase the fault rate of accelerator and controller greatly, the accelerator or the controller that need often more renew have caused the increase of maintenance and repair cost and unnecessary waste.
Up to the present, on market, do not see as yet have the automatic adaptative learning function of accelerator, cooperate accurate; Maintenance, repair are convenient, cost is low; Fault rate is low; Make vehicular drive more flexible, take electric vehicle controller more comfortable, safety and reliability.
The utility model content
The purpose of this utility model is to overcome deficiency of the prior art, a kind of automatic adaptative learning is provided, cooperates precision; Maintenance, repair are convenient, cost is low; Fault rate is low; Make vehicular drive more flexible, take controller for electric vehicle more comfortable, safety and reliability.
The technical scheme that the utility model solves the problems of the technologies described above is: electric vehicle controller of the present utility model, and this controller comprises:
First accelerator power supply commutation circuit and second accelerator power supply commutation circuit are for dissimilar accelerators provides required power supply;
The accelerator trouble detect circuit detects the accelerator mode of operation;
The accelerator signal Acquisition Circuit is utilized the detected voltage of accelerator tap, judges the type that inserts accelerator;
The logic input circuit by operating this logic input circuit, makes controller enter accelerator type matching program or accelerator self study program;
Single Chip Microcomputer (SCM) system, this Single Chip Microcomputer (SCM) system be by CPU, and A D modular converter and storage element are formed, and according to the signal of input, finishes the judgement of accelerator type, the accelerator mode of operation determine the digital to analogy conversion of signal data and storage.
Its technical characterictic can also comprise that described Single Chip Microcomputer (SCM) system outside is connecting acousto-optic display device, and the prompting controller enters different operating state or fault alarm; The high-end high-end power supply that provides of accelerator for inserting of accelerator is provided the A/D converter of Single Chip Microcomputer (SCM) system, and makes accelerator low side ground connection; The A/D converter of Single Chip Microcomputer (SCM) system is connecting the accelerator tap, and will speed up the voltage transitions that the device tap collects is data-signal; Single Chip Microcomputer (SCM) system is connecting the logic input circuit, logic input circuit outside is connecting logical switches such as key switch, micro-switch, and the logic input circuit goes to the control single chip computer system to enter the accelerator learning state according to the certain assembled state and the switching sequence of logical switch; The accelerator type of the acquiescence coupling that is provided with when initial condition connects is a potential device formula accelerator, is+5V for the power supply of the high-end confession of accelerator; The voltage that the accelerator tap collects is less than 5V, judges that the accelerator that inserts is Hall or induction type, and the controller system power line voltage of 36V-48V is provided for this accelerator; Operation mode to described device logic input circuit is: at first close key switch, step on accelerator, at this moment built-in micro-switch closure; Then direction switch is switched 3 times back and forth, start accelerator type matching program; 5 zones of described accelerator range are the high-end fault coverage of accelerator, accelerator low side fault coverage, the high-end dead band of accelerator, accelerator low side dead band, accelerator input service area.
The beneficial effects of the utility model are: realized the Adaptive matching and the learning functionality of dissimilar accelerators on the elec. vehicle, just can mate various types of accelerators for controller for electric vehicle parameter setting especially and hardware change.Even accelerator is along with the growth of period of service, drift has taken place and has made controller enter protection in parameter, need only relearn once to get final product, and greatly reduces because inconvenience and the fault rate that accelerator does not match or later maintenance brings.
Description of drawings
Fig. 1 is hardware system theory of constitution figure of the present utility model;
Fig. 2 is the type of attachment scheme drawing of potential device formula accelerator;
Fig. 3 is the type of attachment scheme drawing of Hall or inductance type accelerator;
Fig. 4 is an accelerator range segmentation scheme drawing;
Fig. 5 is the utility model control block diagram
The specific embodiment
The utility model is combined by software and hardware and constitutes.Hardware system comprises first and second accelerators power supply commutation circuit, and accelerator trouble detect circuit, accelerator signal Acquisition Circuit, logic input circuit, buzzer phone, Single Chip Microcomputer (SCM) system, memory cell, driver element, motor are seen Fig. 1.Control structure comprises initialization, AD conversion, accelerator type identification, accelerator fault detection, accelerator study.
The operation order signal of logic input circuit carries out the state judgement that the accelerator type identification still is accelerator study to Single Chip Microcomputer (SCM) system.Accelerator trouble detect circuit, accelerator signal Acquisition Circuit, hardware system comprise first and second accelerators power supplies commutation circuit, all by Single Chip Microcomputer (SCM) system, finish the signal of accelerator and import, and then be used for the data of computation accelerator type and study.Acousto-optic display device is connected to Single Chip Microcomputer (SCM) system, is used for carrying out controller state judgement and newspaper fault, generally can adopt buzzer phone; Signal after controller will be handled is through the operation of drive unit drives motor.
Fig. 5 is the utility model electric vehicle controller control block diagram.As shown in Figure 5, the control flow of system comprises steps such as system initialization, A/D conversion, the judgement of accelerator type, accelerator fault detection, accelerator study.
Below in conjunction with accompanying drawing 1 to 5, the utility model is realized the principle and the step of accelerator Adaptive matching and study is described in detail as follows:
One, the initialization of system
One default conditions are set when controller dispatches from the factory, and promptly acquiescence coupling accelerator type is a potential device formula accelerator, as Fig. 2.Single Chip Microcomputer (SCM) system makes its conducting for the Q2 low level in the circuit by the current-limiting resistance R9 in first accelerator power supply commutation circuit, + 5.3V gives the high-end confession of accelerator+5V power supply by Q2 and R10, it is ended for the Q3 low level in second accelerator power supply commutation circuit by Single Chip Microcomputer (SCM) system by current-limiting resistance R7 simultaneously, be that the accelerator low side is by the R5 connected to chassis, so just finish the initialization of system, be initially set to the matching status of potential device formula accelerator this moment.
Two, the accelerator type is mated automatically
When the dissimilar accelerator outside the controller desire connection potential device formula accelerator, the utility model provides a kind of general-duty connection mode.This general type of attachment is shown in Fig. 2,3, and this bonded assembly unified standard is avoided the wrong convenient for maintaining of wiring.
When if the controller desire connects Hall or induction type accelerator, adopt mode as shown in Figure 3 to insert.Because the power supply of the type accelerator is the controller system power line voltage, be 36V-48V, during controller identification the type accelerator earlier by default conditions to accelerator confession+5V power supply, make controller enter accelerator type matching program by operation control logic input circuit, this operation can be in the following way: at first close key switch S3, step on accelerator, simultaneously built-in micro-switch closure; Then direction switch (Qian Jin retreats switch) S2 is switched 3 times back and forth, this moment, Single Chip Microcomputer (SCM) system made buzzer phone Chang Xiang once, informed operating personal accelerator type matching program start, and step on accelerator and mate this moment.The accelerator tap is changed through Single Chip Microcomputer (SCM) system the voltage that collects through row A/D, if tap voltage can think that less than 5V the accelerator that connects is Hall or induction type, at this moment Single Chip Microcomputer (SCM) system makes its conducting for the Q1 low level by the current-limiting resistance R8 in first accelerator power supply commutation circuit, 30-60V power supply (system power supply) is given the high-end system power supply that provides of accelerator by Q1 and the R10 in first accelerator power supply commutation circuit, it is the operating voltage of Hall or induction type accelerator, simultaneously make its conducting for the Q3 high level, i.e. the direct ground connection of accelerator low side by the current-limiting resistance R7 of Single Chip Microcomputer (SCM) system by second accelerator power supply commutation circuit.This moment, controller was just finished the coupling of accelerator type automatically, and Single Chip Microcomputer (SCM) system makes the short sound of buzzer phone once, informed that the automatic coupling of operating personal accelerator type finishes.
Three, accelerator self study
Make controller enter accelerator self study program by operation control logic input circuit, its operating mode can be set at: close key switch S3, step on accelerator, simultaneously built-in micro-switch closure; Direction switch S2 is switched 2 times back and forth, and normal sound of buzzer phone promptly enters this function two on the controller.The self-learning function of accelerator mainly is the study to accelerator output area and range, and Fig. 4 is the utility model electric vehicle controller study range scheme drawing.As shown in the figure, the whole range of accelerator is divided into 5 zones here, i.e. the high fault coverage of accelerator, the low fault coverage of accelerator, the high-end dead band of accelerator, accelerator low side dead band, accelerator input service area.
After entering the accelerator self-learning function, accelerator is resetted, slowly step on accelerator up to flooring, switch first power to switch S 2, make controller know that study finishes, the short sound of controller buzzer phone told the operating personal learning success two.In this process, allow the scope of whole accelerator range under the cell stores of Single Chip Microcomputer (SCM) system, comprise the position of micro-switch closure.
Concrete accelerator study and parameter storage are as follows with the rewriting process:
When Single Chip Microcomputer (SCM) system collects the voltage of the built-in micro-switch of accelerator accelerator input when closed, this point is defined as the terminal point in accelerator low side dead band, and Single Chip Microcomputer (SCM) system calculates low fault value of accelerator and accelerator 0%PWM input value thus, determines the low fault coverage of accelerator low side dead band and accelerator thus.When Single Chip Microcomputer (SCM) system collects the magnitude of voltage that accelerator is stepped on full time input, this point is defined as the terminal point in the high-end dead band of accelerator.And Single Chip Microcomputer (SCM) system calculates high fault value of accelerator and accelerator 100%PWM input value thus, determines high-end dead band of accelerator and the high fault coverage of accelerator thus.Zone between accelerator 0%PWM input value and the accelerator 100%PWM input value is an accelerator input efficient range.Single Chip Microcomputer (SCM) system has just been redistributed out five zones of the whole range of accelerator like this, and rewrites the initial value of controller memory cell with these parameters.
Single Chip Microcomputer (SCM) system is compared the accelerator range that receives through the efficient range and the dead zone range data that preset in A/D conversion and the controller storage unit simultaneously, if the efficient range that accelerator range that Single Chip Microcomputer (SCM) system receives and controller preset is not inconsistent, then explanation study is invalid or there is major failure in accelerator itself and by buzzer phone newspaper fault.If conform to, controller then can be readjusted actual input range according to the range of learning, to reach best coupling.Operate vehicle in the normal order after study is finished, controller will carry out speed setting according to the accelerator input range after the study this moment.
Four, control process
The logic input circuit is given Single Chip Microcomputer (SCM) system with the accelerator type identification of execution or the operation order signal conveys of accelerator study, carries out the accelerator state and judges that judgement is accelerator type identification state or accelerator learning state.Accelerator trouble detect circuit, accelerator signal Acquisition Circuit, first and second accelerators power supply commutation circuit and all finish the signal input of accelerator by Single Chip Microcomputer (SCM) system, and then be used for the data of computation accelerator type and study.Buzzer phone connects Single Chip Microcomputer (SCM) system, is used for carrying out controller state and judges and fault alarm, and the signal after controller will be handled is through the operation of drive unit drives motor.
Claims (8)
1. an electric vehicle controller is characterized in that, this controller comprises:
First accelerator power supply commutation circuit and second accelerator power supply commutation circuit are for dissimilar accelerators provides required power supply;
The accelerator trouble detect circuit detects the accelerator mode of operation;
The accelerator signal Acquisition Circuit is utilized the detected voltage of accelerator tap, judges the type that inserts accelerator;
The logic input circuit by operating this logic input circuit, makes controller enter accelerator type matching program or accelerator self study program;
Single Chip Microcomputer (SCM) system, this Single Chip Microcomputer (SCM) system be by CPU, and A D modular converter and storage element are formed, and according to the signal of input, finishes the judgement of accelerator type, the accelerator mode of operation determine the digital to analogy conversion of signal data and storage.
2. electric vehicle controller according to claim 1 is characterized in that, described Single Chip Microcomputer (SCM) system outside is connecting acousto-optic display device, and the prompting controller enters different operating state or fault alarm.
3. electric vehicle controller according to claim 1 is characterized in that, the high-end high-end power supply that provides of accelerator for inserting of accelerator is provided the A/D converter of Single Chip Microcomputer (SCM) system, and makes accelerator low side ground connection.
4. electric vehicle controller according to claim 1 is characterized in that the A/D converter of Single Chip Microcomputer (SCM) system is connecting the accelerator tap, and will speed up the voltage transitions that the device tap collects is data-signal.
5. electric vehicle controller according to claim 1, it is characterized in that, Single Chip Microcomputer (SCM) system is connecting the logic input circuit, logic input circuit outside is connecting logical switches such as key switch, micro-switch, and the logic input circuit goes to the control single chip computer system to enter the accelerator learning state according to the certain assembled state and the switching sequence of logical switch.
6. electric vehicle controller according to claim 1 is characterized in that, the accelerator type of the acquiescence coupling that is provided with when initial condition connects is a potential device formula accelerator, is+5V for the power supply of the high-end confession of accelerator.
7. electric vehicle controller according to claim 1 is characterized in that, the voltage that the accelerator tap collects is less than 5V, judges that the accelerator that inserts is Hall or induction type, and the controller system power line voltage of 36V-48V is provided for this accelerator.
8. electric vehicle controller according to claim 1,5 zones that it is characterized in that described accelerator range are the high-end fault coverage of accelerator, accelerator low side fault coverage, the high-end dead band of accelerator, accelerator low side dead band, accelerator input service area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201421239U CN201317277Y (en) | 2008-09-23 | 2008-09-23 | Electric vehicle controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201421239U CN201317277Y (en) | 2008-09-23 | 2008-09-23 | Electric vehicle controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201317277Y true CN201317277Y (en) | 2009-09-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201421239U Expired - Fee Related CN201317277Y (en) | 2008-09-23 | 2008-09-23 | Electric vehicle controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201317277Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110632866A (en) * | 2019-07-18 | 2019-12-31 | 青岛经济技术开发区海尔热水器有限公司 | Control system, control method and electronic device |
-
2008
- 2008-09-23 CN CNU2008201421239U patent/CN201317277Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110632866A (en) * | 2019-07-18 | 2019-12-31 | 青岛经济技术开发区海尔热水器有限公司 | Control system, control method and electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090930 Termination date: 20100923 |