CN101618720A - Control method of whole car controller of hybrid electric car - Google Patents
Control method of whole car controller of hybrid electric car Download PDFInfo
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- CN101618720A CN101618720A CN200910041664A CN200910041664A CN101618720A CN 101618720 A CN101618720 A CN 101618720A CN 200910041664 A CN200910041664 A CN 200910041664A CN 200910041664 A CN200910041664 A CN 200910041664A CN 101618720 A CN101618720 A CN 101618720A
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Abstract
The invention aims at providing a control method of a whole car controller of a hybrid electric car which saves electricity and can lead the car to start fast. The control method comprises a normal work mode and a sleep mode; under the normal work mode, when a key is switched into an off state from an on state and is kept for a certain time; the whole car controller is switched to the sleep mode from the normal work mode; under the sleep mode, in the whole car controller, only specific modules are kept to work, the rest of modules are closed; and when a waking condition is met, the whole car controller enters the normal work mode. The control method of the whole car controller of the hybrid electric car reduces the electric energy consumption of the whole car controller of the hybrid electric car by setting the sleep mode, simultaneously avoids electrifying initiation of software each time, reduces the waiting time of starting of the hybrid electric car and has important significance for improving success rate of cold starting of the hybrid electric car.
Description
Technical field
The invention belongs to hybrid vehicle control technology field, specially refer to the control method of entire car controller.
Background technology
Along with development of science and technology, increasing electronics package and equipment are applied to automotive field, and entire car controller wherein is one of visual plant of automobile, is undertaking the important task of controlling other equipment.If turn off the power supply of entire car controller in KEYOFF, so, the entire car controller that at every turn powers on all will carry out initialization again, want at least can have a strong impact on the normal run up time of car load like this about 400ms consuming time; And if in the time of KEYOFF, still keep the entire car controller normal operation, because of its quiescent current is bigger, can consume the electric energy of automobile batteries greatly, even can run out of battery power and automobile can't normally be started.
Summary of the invention
The control method that the objective of the invention is to propose a kind of power saving and can make the whole car controller of hybrid electric car of automobile quick operated start.
The control method of whole car controller of hybrid electric car of the present invention comprises normal mode of operation and sleep pattern, under normal mode of operation, when key switched to off-state and keeps certain hour from on-state after, entire car controller switched to sleep pattern from normal mode of operation; Under sleep pattern, entire car controller has only specific modules maintenance work, and all the other modules are closed, and when wake-up condition satisfied, entire car controller entered into normal mode of operation.
Under normal mode of operation, the program of entire car controller is normally moved, in parking request that is checked through chaufeur or long-term Parking request, promptly when key switches to off-state and keeps certain hour from on-state after, will close the main program circulatory function successively, as functional modules such as CAN, trouble diagnosing, demarcation, analog input, numeral outputs, withdraw from the main program circulation, carry out sleep pattern; Under sleep pattern, entire car controller is regularly inquired about wake-up condition, when wake-up condition satisfies, the hybrid power entire car controller will be waken up, finish phase-locked loop clock, software watchdog and hardware adaptor reconfigured after, controller enters normal mode of operation, enters the main program circulation, has all normal functions of controller.Said method can make entire car controller have only crucial module work under sleep pattern, its quiescent current is very little, therefore reduced the expenditure of energy of entire car controller, simultaneously when being transformed into normal mode of operation by sleep pattern, also need not to reinitialize entire car controller, thereby saved run up time.The entire car controller chip of at present a lot of automobiles all has sleep pattern, only relevant register need be set and get final product, and repeats no more herein.
The method that is transformed into normal mode of operation by sleep pattern has following two kinds:
First method is: after entire car controller switches to sleep pattern from normal mode of operation, entire car controller promptly begins the timing of timer, after surpassing the schedule time of timer length of one's sleep, entire car controller is at first reset timer, carry out self function check then, reexamine the key state after inspection finishes, if key is a closed condition, then reenter sleep pattern, control timer restarts timing; If key is an on-state, then enter normal mode of operation.
Come the timing wake-up entire car controller by timer, whether the various functions that can just check an entire car controller at set intervals are all normal, such as the voltage of power supply, the key parameter of other key components and parts, also have functions such as warning, guarantee the safety of automobile.After checking out above-mentioned functions, if this moment, key still was in closed condition, so just reenter sleep pattern, make the timer reclocking simultaneously, once more entire car controller is waken up up to timer.--the periodical duty state of--waking up----sleep pattern can make entire car controller when guaranteeing automotive safety to above sleep pattern, significantly reduces quiescent current, promptly reduces power consumption.
Above-mentioned timer can for entire car controller resetting pin bonded assembly RC charge-discharge circuit, described RC charge-discharge circuit is by the vehicle control unit controls charge or discharge: when entire car controller when normal mode of operation switches to sleep pattern, vehicle control unit controls RC charge-discharge circuit begins discharge, when the level of entire car controller resetting pin is lower than certain value, entire car controller is restarted, and carries out self function check and control the RC charge-discharge circuit to begin charging.This RC charge-discharge circuit response time is fast, and signal stabilization is good, can guarantee entire car controller cyclic transformation between sleep pattern and normal mode of operation.In addition, the method that this RC charge-discharge circuit wakes entire car controller up is to utilize low level to trigger the resetting pin of entire car controller, restart entire car controller, because wake entire car controller this moment up is not that chaufeur will start automobile immediately, therefore an urgent demand on not free, restart entire car controller and can fully check every function, guarantee automotive safety.
Above-mentioned RC charge-discharge circuit can be following form: this circuit comprises resistance, electric capacity and is subjected to the discharge switch and the charge switch of vehicle control unit controls, described resistance and formation circuit parallel in parallel with electric capacity again after discharge switch is connected, one end ground connection of described circuit parallel, the other end is divided into two-way, one the tunnel is connected with the resetting pin of entire car controller, and another road links to each other with power supply by charge switch.The principle of work of foregoing circuit is as follows: when entire car controller when normal mode of operation switches to sleep pattern, the vehicle control unit controls discharge switch is connected, the while turn off charge switch, electric capacity begins discharge like this, when the level of entire car controller resetting pin is lower than certain value, trigger resetting pin entire car controller is restarted, carry out self function check and control charge switch and connect, disconnect discharge switch simultaneously, make electric capacity begin charging.
Second kind of method that is transformed into normal mode of operation by sleep pattern is: after entire car controller switches to sleep pattern from normal mode of operation, entire car controller monitoring key state, after key switched to on-state from off-state, entire car controller switched to normal mode of operation from sleep pattern.After key forwarded on-state to, the expression chaufeur will start automobile immediately, and entire car controller switches to normal mode of operation at once, compares the method for restarting entire car controller in the past, can save run up time.
It is above-mentioned that still to keep the particular module of normal operation under sleep pattern be Clock management module, Input Monitor Connector module and interrupt module, these three module normal operation just can guarantee that entire car controller switches to normal mode of operation in the very short time, and significantly reduce current draw.
Comprehensive above-mentioned two kinds are transformed into the method for normal mode of operation by sleep pattern, preferably adopt following control method to control the conversion of entire car controller between normal mode of operation and sleep pattern, and this method specifically comprises the steps:
A: under normal mode of operation, when key switched to off-state and keeps certain hour from on-state after, entire car controller was closed the module except that particular module, and to set out the circulation zone bit be FALSE, switched to sleep pattern from normal mode of operation;
B: the vehicle control unit controls timer picks up counting;
C: after entire car controller detected key and switches to on-state from off-state, it was TRUE that entire car controller sets out the circulation zone bit, and switches to normal mode of operation from sleep pattern;
D: after entire car controller receives the signal that the timing of timer finishes, entire car controller is at first reset timer, carry out self function check then, after finishing, inspection reexamines out the circulation zone bit, zone bit is FALSE if go out to circulate, then reenter sleep pattern, control timer restarts timing; Zone bit is TRUE if go out to circulate, and then enters normal mode of operation.
In the above-mentioned A step, under normal mode of operation, have only when key switches to off-state and keeps certain hour from on-state after, entire car controller just switches to sleep pattern from normal mode of operation, guarantee so only when chaufeur really will stop, just to enter sleep pattern, prevent misoperation when being interfered, enter sleep pattern, influence the driving of chaufeur, guarantee safety.
The control method of whole car controller of hybrid electric car of the present invention is by being provided with sleep pattern, reduced the power consumption of whole car controller of hybrid electric car, avoided the each power-up initializing of software simultaneously, reduce hybrid vehicle and started wait time, significant to improving hybrid vehicle cold start-up success ratio.
Description of drawings
Fig. 1 is the control method diagram of circuit of embodiment 1;
Fig. 2 is the RC charge-discharge circuit schematic diagram of embodiment 1.
The specific embodiment
Describe the present invention in detail below in conjunction with specific embodiments and the drawings.
Embodiment 1:
As shown in Figure 1, the method for the whole car controller of hybrid electric car of present embodiment comprises the steps:
A: under normal mode of operation, when key switches to off-state and keeps certain hour from on-state after, entire car controller is closed the module except that particular module, and to set out the circulation zone bit be FALSE, switch to sleep pattern from normal mode of operation, the above-mentioned time is generally about 1 millisecond;
B: the vehicle control unit controls timer picks up counting;
C: after entire car controller detected key and switches to on-state from off-state, it was TRUE that entire car controller sets out the circulation zone bit, and switches to normal mode of operation from sleep pattern;
D: after entire car controller receives the signal that the timing of timer finishes, entire car controller is at first reset timer, carry out self function check then, after finishing, inspection reexamines out the circulation zone bit, zone bit is FALSE if go out to circulate, then reenter sleep pattern, control timer restarts timing; Zone bit is TRUE if go out to circulate, and then enters normal mode of operation.
As shown in Figure 2, above-mentioned timer is the RC charge-discharge circuit, this circuit comprises resistance R 1, capacitor C 1 and is subjected to the discharge switch SW1 and the charge switch SW2 of vehicle control unit controls, described resistance R 1 with after discharge switch SW1 connects again with capacitor C 1 formation circuit parallel in parallel, one end ground connection of described circuit parallel, the other end is divided into two-way, and one the tunnel is connected with the resetting pin of entire car controller, and another road links to each other with power supply VCC by charge switch SW2.The principle of work of foregoing circuit is as follows: when entire car controller when normal mode of operation switches to sleep pattern, vehicle control unit controls discharge switch SW1 connects, while turn off charge switch SW2, capacitor C 1 begins discharge by resistance R 1 like this, when the level of entire car controller resetting pin is lower than certain value, trigger resetting pin entire car controller is restarted, carry out self function check and control charge switch SW2 and connect, disconnect discharge switch SW1 simultaneously, make capacitor C 1 begin charging.
Claims (7)
1, a kind of control method of whole car controller of hybrid electric car, it is characterized in that comprising normal mode of operation and sleep pattern, under normal mode of operation, when key switched to off-state and keeps certain hour from on-state after, entire car controller switched to sleep pattern from normal mode of operation; Under sleep pattern, entire car controller has only specific modules maintenance work, and all the other modules are closed, and when wake-up condition satisfied, entire car controller entered into normal mode of operation.
2, the control method of whole car controller of hybrid electric car according to claim 1, after it is characterized in that entire car controller switches to sleep pattern from normal mode of operation, entire car controller promptly begins the timing of timer, after surpassing the schedule time of timer length of one's sleep, entire car controller is at first reset timer, carry out self function check then, after finishing, inspection reexamines the key state, if key is a closed condition, then reenter sleep pattern, control timer restarts timing; If key is an on-state, then enter normal mode of operation.
3, the control method of whole car controller of hybrid electric car according to claim 2, it is characterized in that described timer is and entire car controller resetting pin bonded assembly RC charge-discharge circuit, described RC charge-discharge circuit is by the vehicle control unit controls charge or discharge: when entire car controller when normal mode of operation switches to sleep pattern, vehicle control unit controls RC charge-discharge circuit begins discharge, when the level of entire car controller resetting pin was lower than certain value, entire car controller was carried out self function check and is controlled the RC charge-discharge circuit and begins charging.
4, the control method of whole car controller of hybrid electric car according to claim 3, it is characterized in that described RC charge-discharge circuit comprises resistance, electric capacity and is subjected to the discharge switch and the charge switch of vehicle control unit controls, described resistance and formation circuit parallel in parallel with electric capacity again after discharge switch is connected, one end ground connection of described circuit parallel, the other end is divided into two-way, one the tunnel is connected with the resetting pin of entire car controller, and another road links to each other with power supply by charge switch.
5, the control method of whole car controller of hybrid electric car according to claim 1, after it is characterized in that entire car controller switches to sleep pattern from normal mode of operation, entire car controller monitoring key state, after key switched to on-state from off-state, entire car controller switched to normal mode of operation from sleep pattern.
6, the control method of whole car controller of hybrid electric car according to claim 1 is characterized in that described particular module is Clock management module, Input Monitor Connector module and interrupt module.
7, the control method of whole car controller of hybrid electric car according to claim 1 is characterized in that comprising the steps:
A: under normal mode of operation, when key switched to off-state and keeps certain hour from on-state after, entire car controller was closed the module except that particular module, and to set out the circulation zone bit be FALSE, switched to sleep pattern from normal mode of operation;
B: the vehicle control unit controls timer picks up counting;
C: after entire car controller detected key and switches to on-state from off-state, it was TRUE that entire car controller sets out the circulation zone bit, and switches to normal mode of operation from sleep pattern;
D: after entire car controller receives the signal that the timing of timer finishes, entire car controller is at first reset timer, carry out self function check then, after finishing, inspection reexamines out the circulation zone bit, zone bit is FALSE if go out to circulate, then reenter sleep pattern, control timer restarts timing; Zone bit is TRUE if go out to circulate, and then enters normal mode of operation.
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| CN2009100416641A CN101618720B (en) | 2009-08-05 | 2009-08-05 | Control method of whole car controller of hybrid electric car |
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