CN105141205A - Vehicle-mounted starting circuit and power supply compensating circuit thereof - Google Patents
Vehicle-mounted starting circuit and power supply compensating circuit thereof Download PDFInfo
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- CN105141205A CN105141205A CN201510646551.XA CN201510646551A CN105141205A CN 105141205 A CN105141205 A CN 105141205A CN 201510646551 A CN201510646551 A CN 201510646551A CN 105141205 A CN105141205 A CN 105141205A
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Abstract
A power supply compensating circuit is connected to a vehicle-mounted starting circuit and comprises a first input end, a second input end and an output end. The first input end is used for detecting the battery voltage level of the vehicle-mounted starting circuit; the second input end is connected with a rotor of a power generator of the vehicle-mounted starting circuit; and when the battery voltage level is equal to or larger than load rejection voltage level, the power supply compensating circuit compensates for the voltage level of the output end to enable the voltage level of the output end to be maintained to be a working level in the compensating time, wherein the working level is the voltage level for enabling an indicator light of the vehicle-mounted starting circuit to be off. Therefore, the power supply compensating circuit can prevent misoperation of the indicator light in the vehicle operation process.
Description
Technical field
The present invention relates to a kind of vehicle-mounted start-up circuit, particularly relate to the vehicle-mounted start-up circuit of a kind of power supply compensating circuit and applied power source compensating circuit.
Background technology
As shown in Figure 1, traditional vehicle-mounted start-up circuit 90 comprises generator (alternator) 91, rectifier 92, single functional regulator 93, battery (battery) 94, starting switch (ignitionswitch) 95 and indicator light (warninglamp) 96.
Generator 91 has rotor (rotor) 911 and stator (stator) 912, and rotor 911 and stator 912 have magnetic field winding respectively.Rectifier 92 and Node B
+, node D and node G connects.Node B
+corresponding to the positive pole of battery 94.Node D is the common joint of rectifier 92, single functional regulator 93, indicator light 96 and rotor 911.Node G corresponds to the ground connection reference point of traditional vehicle-mounted start-up circuit 90, and is connected with the negative pole of rectifier 92, single functional regulator 93 and battery 94.The other end of rotor 911 is connected with node F, and node F is also connected with single functional regulator 93.Starting switch 95 is connected with battery 94 and indicator light 96.Indicator light 96 can be the various element that can produce visible ray such as bulb and light-emitting diode.
When starting switch 95 is connected, the rotor 911 of generator 91 obtains starting current I via the transmission path of battery 94, starting switch 95 and indicator light 96
s, thus make generator 91 excitatory.Now, node D belongs to low voltage level, therefore, and starting current I
sflow through indicator light 96, and make indicator light 96 shinny.
Then, generator 91 complete excitatory after just can run well and generate electricity, now, the voltage level of node D can raise, and makes the positive voltage terminal convergence equipotential of two ends, i.e. node D and the battery 94 of indicator light 96, thus indicator light 96 is extinguished.The electric power that generator 91 produces is by charging to battery 94 after rectifier 92 rectification.
When automobile is in operation, load (such as radiator fan and air-conditioning equipment etc., not illustrated in FIG.) startup can cause generator 91 needs to produce the power supply of more high potential, to meet the demand of load.But automobile is in operation when fast situation, red light, the temporary shut down etc. such as such as, and fractional load can be closed, and particularly inductive load (such as fan) is closed and caused Node B
+voltage level uprise, cause single functional regulator 93 to close the excitatory path of generator 91.Because generator 91 is closed, therefore, the voltage level of node D can become electronegative potential, and makes indicator light 96 light momently or glimmer, and generator can again by excitatory and run well afterwards, and thus, indicator light 96 just can extinguish.It should be noted, generator 91 is from being closed to again excitatory about needs 100 milliseconds (ms), but now misoperation (namely luminous) can occur indicator light 96, therefore, driver is easily affected by this unexpected flash of light, and thinks that generator 91 is abnormal by mistake.
Fig. 2 is the voltage level plot that measured node D and node F obtain, for show generator again excitatory time node D there is obvious voltage drop, cause indicator light generator again excitatory complete before there is abnormal luminescence.As shown in Figure 2, in this figure, the characteristic curve of top is the measurement result of node D, and the characteristic curve of below is then the measurement result of node F.Wherein, interval I represents load and closes, then, interval II represents load closedown and causes generator to be closed, and the voltage level of node F is declined, and when generator is again excitatory, the voltage level of node F is increased to the voltage level after excitatory completing gradually, wherein, voltage level raises gradually and namely represents generator and again complete the excitatory required time from being closed to, and the time is about 100 milliseconds.The time of above-mentioned indicator light generation misoperation is exactly in the position of section II.
China's Authorization Notice No. is disclose a kind of method and the device thereof that prevent vehicles from mistaken lighting in the patent gazette of 101262142, in that patent, in vehicle operation, when the electric power loads of storage battery reduces suddenly, regulating circuit stops for induced current to solenoid, and makes the high-pressure side magnitude of voltage of storage battery increase, now, control core, when magnitude of voltage is greater than default value, controls display lamp not bright light.But this mode needs rule of thumb to set default value, and default value drift may occur, and judges by accident.
Summary of the invention
In view of the above problems, the object of the present invention is to provide a kind of vehicle-mounted start-up circuit and power supply compensating circuit thereof, to prevent the indicator light generation misoperation of the vehicle-mounted start-up circuit of vehicle in operation.
For reaching above-mentioned purpose, power supply compensating circuit of the present invention is connected in vehicle-mounted start-up circuit, and comprises first input end, the second input and output.First input end is for detecting the battery voltage of vehicle-mounted start-up circuit.Second input is connected with the rotor of the generator of vehicle-mounted start-up circuit.Wherein, when battery voltage equals or exceeds load throwing live voltage level, the voltage level of power supply compensating circuit to output compensates, and remains operation level to make the voltage level of output within the make-up time.Operation level is the voltage level of instigating the indicator light of vehicle-mounted start-up circuit to extinguish.
In order to reach above-mentioned purpose, vehicle-mounted start-up circuit of the present invention comprises generator, rectifier, battery, starting switch, indicator light, single functional regulator and power supply compensating circuit.Generator has rotor and stator.Rectifier is connected with the stator of generator.Battery is connected with rectifier.Starting switch is connected with battery and rectifier.Indicator light is connected with starting switch.The rotor of single functional regulator and generator, rectifier and indicator light are connected.Power supply compensating circuit comprises first input end, the second input and output.First input end is connected with battery, and for detecting the battery voltage of battery.Second input is connected with the rotor of generator.Wherein, when battery voltage equals or exceeds load throwing live voltage level, the voltage level of power supply compensating circuit to output compensates, within the make-up time, operation level is remained to make the voltage level of output, thus, generator again complete excitatory before, the voltage level of power supply compensating circuit to output compensates and makes its convergence operation level, thus make indicator light two ends keep convergence equipotential, namely indicator light extinguishes.
Thus, power supply compensating circuit of the present invention can compensate indicator light voltage level when load in vehicle operating is closed or reduces effectively, and make indicator light two ends convergence equipotential (i.e. operation level), thus solve the problem causing indicator light misoperation when load is closed or reduces.
About the detailed construction of vehicle-mounted start-up circuit provided by the present invention and power supply compensating circuit thereof, feature, assembling or occupation mode, described in describing in detail in follow-up execution mode.But have in the technology of the present invention field and usually know that the knowledgeable should be able to understand, these describe in detail and implement the specific embodiment cited by the present invention, only for illustration of the present invention, not for limiting scope of patent protection of the present invention.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of traditional vehicle-mounted start-up circuit.
Fig. 2 is the voltage level plot that the node D of survey map 1 and node F obtain, and for showing the generator excitatory time again, obvious voltage drop occurs node D.
Fig. 3 is the schematic diagram that power supply compensating circuit of the present invention is connected in vehicle-mounted start-up circuit.
Fig. 4 is the circuit diagram of single functional regulator in Fig. 3 and power supply compensating circuit.
Fig. 5 is the voltage level plot that the node D of survey map 3 and node F obtain, for showing voltage compensating circuit of the present invention during generator is again excitatory to the voltage compensation that node D carries out.
Fig. 6 is the voltage level plot that the node D of survey map 3 and node F obtain, and discharges its electric power stored for being presented at voltage compensating circuit of the present invention when generator shuts down.
(symbol description)
10 power supply compensating circuit 11 first input ends
12 second input 13 outputs
14 level compensation module 15 discharge modules
The vehicle-mounted start-up circuit of 16 ground connection reference point 20
The single functional regulator of 21 indicator light 22
221 magnetic field transistors 222 are released can diode
23 battery 24 generators
The traditional vehicle-mounted start-up circuit of 241 rotor 90
91 generator 911 rotors
912 stator 92 rectifiers
93 single functional regulator 94 batteries
95 starting switch 96 indicator lights
ZD1 first voltage stabilizing didoe ZD2 second voltage stabilizing didoe
R1 first resistance R2 second resistance
R3 the 3rd resistance R4 the 4th resistance
C electric capacity QPP type power transistor
QNN type power transistor D1 first diode
D2 second diode B
+, D, F, G node
VB battery voltage V
woperation level
I
sstarting current
Embodiment
Below, enumerate corresponding preferred embodiment in conjunction with each accompanying drawing effect is reached to the structural detail of vehicle-mounted start-up circuit of the present invention and power supply compensating circuit thereof and institute be described.But in each accompanying drawing, the component of vehicle-mounted start-up circuit and power supply compensating circuit thereof and module are only used for technical characteristic of the present invention is described, but not are construed as limiting the present invention.
Fig. 3 is the schematic diagram that power supply compensating circuit of the present invention is connected in vehicle-mounted start-up circuit.As shown in Figure 3, power supply compensating circuit 10 of the present invention is connected in vehicle-mounted start-up circuit 20, and for preventing indicator light 21 error starting of vehicle-mounted start-up circuit 20.Wherein, vehicle-mounted start-up circuit 20 is roughly identical with the vehicle-mounted start-up circuit of tradition described in the prior art, and same section repeats no more.Wherein, single functional regulator 22 for detecting battery voltage VB, and when battery voltage equals or exceeds load throwing live voltage level, is closed the charge path of single functional regulator 22 pairs of batteries 23, is damaged to prevent battery 23.
Power supply compensating circuit 10 of the present invention has first input end 11, second input 12 and output 13, positive pole (the i.e. Node B of first input end 11 and battery
+) connect, and detection node B
+battery voltage.Second input 12 is connected with the rotor 241 (i.e. node F) of generator 24, and the voltage level of detection node F.Output 13 is connected with the common joint of the rotor 241 of indicator light 21, single functional regulator 22 and generator 24, i.e. node D, and output has operation level V
w.Operation level V
wit is the voltage level of instigating indicator light 21 to extinguish.The first input end 11 of power supply compensating circuit 10 receives the voltage of battery 23, and detects battery voltage VB.In Node B
+voltage level (battery voltage VB) equal or exceed load throw live voltage level time, the voltage level of power supply compensating circuit 10 pairs of outputs 13 compensates, and remains operation level V to make the voltage level of output 13
w.Wherein, it is relevant with vehicle-mounted load that live voltage level is thrown in load, refers to inductive load especially.Throw to carry and refer to that inductive load is closed or reduces, cause Node B
+voltage level raise, be namely greater than the voltage level that battery charges normal.
Thus, because power supply compensating circuit 10 of the present invention can compensate the voltage level of node D fast when generation is thrown and carried phenomenon, in case the voltage level of node D occurs significantly to change, therefore, generator 24 rotor 241 again excitatory complete before, can not misoperation be there is in indicator light 21.
Fig. 4 is the concrete implementing circuit figure of single functional regulator 22 in Fig. 3 and power supply compensating circuit 10, eliminates the generator 24 of the vehicle-mounted start-up circuit 20 in Fig. 3, rectifier, battery 23, starting switch and indicator light 21 in this figure.As shown in Figure 4, single functional regulator 22 has magnetic field transistor 221 and releases energy diode 222.Magnetic field transistor 221 is connected with node F and node G.Release and can be connected with node D and node F by diode 222.When generator normal power generation, magnetic field transistor 221 is unlocked repeatedly and closes.When generator stops generating, release and can the rotor of generator be supplied to discharge electric energy by diode 222.It should be noted that single functional regulator 22 uncontrollable magnetic field transistor 221 remains on small conducting ratio, and can only controlling magnetic field transistor 221 conducting or closedown completely.In brief, single functional regulator 22 cannot prevent indicator light generation misoperation by the action of controlling magnetic field transistor 221.
Continue referring to Fig. 4, power supply compensating circuit 10 comprises level compensation module 14 and discharge module 15.Level compensation module 14 is connected with first input end 11 and output 13, and for compensating the voltage level of node D, and make the voltage level of output 13 remain operation level V
w.Discharge module 15 is connected with the second input 12, level compensation module 14 and ground connection reference point 16, and when generator stops generating, discharges electric energy for level compensating module 14.Wherein, generator stops generating referring to that rotor does not have electric power.
In the present embodiment, level compensation module 14 has the first voltage stabilizing didoe (zenerdiode) ZD1, first resistance R1, P type power transistor QP and the first diode D1.First voltage stabilizing didoe ZD1 and the first resistance R1 is connected in parallel, and is connected with first input end 11 and P type power transistor QP.First diode D1 is connected with P type power transistor QP and output 13.
Discharge module 15 comprises the second diode D2, the second voltage stabilizing didoe ZD2, the second resistance R2, the 3rd resistance R3, the 4th resistance R4, electric capacity C and N-type power transistor QN.Second resistance R2 and the second diode D2 is connected in series, and the second resistance R2 is connected with the second input 12.Second voltage stabilizing didoe ZD2, the 3rd resistance R3 and electric capacity C are connected in parallel, and are connected with the second diode D2 and N-type power transistor QN.N-type power transistor QN is connected with ground connection reference point 16.4th resistance R4 is connected with N-type power transistor QN and the first voltage stabilizing didoe ZD1.
First voltage stabilizing didoe ZD1 and the second voltage stabilizing didoe ZD2 is respectively used to protect P type power transistor QP and N-type power transistor QN, damages to prevent P type power transistor QP and N-type power transistor QN.
Generator complete excitatory before, the output 13 (i.e. node D) of power supply compensating circuit 10 is in electronegative potential, and node F is also in electronegative potential because generator does not also complete excitatory, and therefore, P type power transistor QP is off-state.In other words, generator complete excitatory before, power supply compensating circuit 10 does not play a role, and can not change the Starting mode of vehicle-mounted start-up circuit 20, and therefore this stage remains identical with traditional start-up course, therefore repeats no more.
Along with generator completes excitatory, namely during generator normal power generation, node F can be transformed into high potential, and P type power transistor QP remains conducting state, and N-type power transistor QN is off-state, therefore, with Node B
+the electric energy of the battery connected can charge to the P type power transistor QP of level compensation module 14, and makes first input end 11 and output 13 become equipotential.
When vehicle load is closed or reduce (such as treating fast situation), make Node B
+voltage level improve, namely occur throw carry a phenomenon, now, single functional regulator 22 closes charge path and the magnetic field transistor 221 of battery.Meanwhile, the level compensation module 14 of power supply compensating circuit 10 of the present invention exports big current via the P type power transistor QP of conducting to output 13, and makes the voltage level of node D remain operation level V
wuntil generator completes excitatory, therefore, indicator light two ends are equipotentials, and can not be shinny momently.
When generator does not rotate, when namely vehicle stops working, P type power transistor OP can discharge electric energy stored by it via the N-type power transistor ON of discharge module 15, with make input 11 revert to excitatory before low-potential state.
Make-up time is relevant with the generator excitatory required time, and in the present embodiment, the make-up time is between 100 milliseconds-500 milliseconds.As described in the prior art, the excitatory time is approximately 100 milliseconds to generator again, and the make-up time of power supply compensating circuit 10 of the present invention is greater than 100 milliseconds, more accurately can prevent indicator light generation misoperation.Preferably, the make-up time is equal to or greater than 2 times of generator excitatory time, namely more than 200 milliseconds or 200 milliseconds.In fact, generator excitatory time can be also other number of seconds, therefore is not limited to 100 milliseconds, and the make-up time is also not limited to 2 times of generator excitatory time.
Fig. 5 is the voltage level plot that node D in actual measurement Fig. 3 and node F obtain, for showing the voltage compensation that voltage compensating circuit of the present invention carries out node D at generator again excitatory period.In this figure, the characteristic curve of top is the measurement result of node D, and the characteristic curve of below is then the measurement result of node F.As shown in Figure 5, interval I and II represents load closedown.Wherein, interval II also represents generator and is closed, now, power supply compensating circuit real-Time Compensation voltage level of the present invention, therefore, till being closed to again excitatory completing from generator, can not there is the decline of voltage level significantly in the voltage level of node D as the interval II of Fig. 2, therefore, indicator light would not be lit or misoperation occurs.
Fig. 6 is the voltage level plot that node D in actual measurement Fig. 3 and node F obtain, and discharges its electric power stored for being presented at voltage compensating circuit when generator shuts down.In this figure, the characteristic curve of top is the measurement result of node D, and the characteristic curve of below is then the measurement result of node F.As shown in Figure 6, interval I represents generator and runs well, and interval II represents generator and closes, and in interval II, the voltage level that node F measures becomes electronegative potential, and the voltage level of node D also step-down gradually.
Finally, again emphasize, structural detail disclosed in the above embodiment of the present invention, is only and illustrates, is not used for limiting the scope of the application, other equivalence elements substitute or change also should be included in the scope of patent protection of the application.
Claims (10)
1. a power supply compensating circuit, it is connected in vehicle-mounted start-up circuit, and the feature of described power supply compensating circuit is, comprising:
First input end, it is for detecting the battery voltage of described vehicle-mounted start-up circuit;
Second input, it is connected with the rotor of the generator of described vehicle-mounted start-up circuit; And
Output, wherein, when described battery voltage equals or exceeds load throwing live voltage level, the voltage level of described power supply compensating circuit to described output compensates, to make the voltage level of described output remain operation level within the make-up time, described operation level is the voltage level of instigating the indicator light of described vehicle-mounted start-up circuit to extinguish.
2. power supply compensating circuit as claimed in claim 1, is characterized in that,
Also comprise level compensation module and discharge module, described level compensation module is connected with described first input end and described output, and for compensating the voltage level of described output, described discharge module is connected with described second input, described level compensation module and ground connection reference point, and when described generator stops generating, for described level compensation module release electric energy.
3. power supply compensating circuit as claimed in claim 2, is characterized in that,
Described level compensation module has the first voltage stabilizing didoe, the first resistance, P type power transistor and the first diode,
Described first voltage stabilizing didoe is connected with described first resistor coupled in parallel, and is connected with described first input end and described P type power transistor,
Described first diode is connected with described P type power transistor and described output,
Described discharge module comprises the second diode, the second voltage stabilizing didoe, the second resistance, the 3rd resistance, the 4th resistance, electric capacity and N-type power transistor,
Described second diode is connected with described second resistant series,
Described second resistance is connected with described second input,
Described second voltage stabilizing didoe, described 3rd resistance and described Capacitance parallel connection connect, and are connected with described second diode and described N-type power transistor,
Described N-type power transistor is connected with described ground connection reference point,
Described 4th resistance is connected with described N-type power transistor and described first voltage stabilizing didoe.
4. power supply compensating circuit as claimed in claim 1, is characterized in that,
Described vehicle-mounted start-up circuit also comprises generator, and the make-up time of described power supply compensating circuit is greater than described generator and again completes the excitatory required time.
5. power supply compensating circuit as claimed in claim 4, is characterized in that,
2 times of equaling that described generator completes excitatory required time again of described make-up time.
6. a vehicle-mounted start-up circuit, is characterized in that, comprising:
Generator, it has rotor and stator;
Rectifier, it is connected with the stator of described generator;
Battery, it is connected with described rectifier;
Starting switch, it is connected with described battery and described rectifier;
Indicator light, it is connected with described starting switch;
Single functional regulator, it is connected with the rotor of described generator, described rectifier and described indicator light; And
Power supply compensating circuit, it comprises first input end, second input and output, described first input end is connected with described battery, and for detecting the battery voltage of described battery, described second input is connected with the rotor of described generator, wherein, when described battery voltage equals or exceeds load throwing live voltage level, the voltage level of described power supply compensating circuit to described output compensates, within the make-up time, operation level is remained to make the voltage level of described output, described operation level is the voltage level of instigating above-mentioned indicator light to extinguish.
7. vehicle-mounted start-up circuit as claimed in claim 6, is characterized in that,
Described power supply compensating circuit also comprises level compensation module and discharge module, described level compensation module is connected with described first input end and described output, and for compensating the voltage level of described output, described discharge module is connected with described second input, described level compensation module and ground connection reference point, and when described generator stops generating, for described level compensation module release electric energy.
8. vehicle-mounted start-up circuit as claimed in claim 7, is characterized in that,
Described level compensation module has the first voltage stabilizing didoe, the first resistance, P type power transistor and the first diode,
Described first voltage stabilizing didoe is connected with described first resistor coupled in parallel, and is connected with described first input end and described P type power transistor,
Described first diode is connected with described P type power transistor and described output,
Described discharge module comprises the second diode, the second voltage stabilizing didoe, the second resistance, the 3rd resistance, the 4th resistance, electric capacity and N-type power transistor,
Described second diode is connected with described second resistant series, described second resistance is connected with described second input, described second voltage stabilizing didoe, described 3rd resistance and described Capacitance parallel connection connect, and be connected with described second diode and described N-type power transistor, described N-type power transistor is connected with described ground connection reference point, and described 4th resistance is connected with described N-type power transistor and described first voltage stabilizing didoe.
9. vehicle-mounted start-up circuit as claimed in claim 6, is characterized in that,
The make-up time of described power supply compensating circuit is greater than described generator and again completes the excitatory required time.
10. vehicle-mounted start-up circuit as claimed in claim 9, is characterized in that,
2 times of equaling that described generator completes excitatory required time again of described make-up time.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510646551.XA CN105141205B (en) | 2015-10-08 | 2015-10-08 | Vehicle-mounted start-up circuit and its power supply compensation circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510646551.XA CN105141205B (en) | 2015-10-08 | 2015-10-08 | Vehicle-mounted start-up circuit and its power supply compensation circuit |
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| CN105141205A true CN105141205A (en) | 2015-12-09 |
| CN105141205B CN105141205B (en) | 2018-02-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108123647A (en) * | 2016-11-30 | 2018-06-05 | 株式会社电装 | Control apparatus of vehicle |
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| JP2006025558A (en) * | 2004-07-09 | 2006-01-26 | Denso Corp | Power generation controller |
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| CN1276101A (en) * | 1997-09-11 | 2000-12-06 | 三菱电机株式会社 | Controller of ac generator for vehicle |
| US20040113593A1 (en) * | 2002-12-10 | 2004-06-17 | Denso Corporation | Generator control circuit having alarm controller |
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