CN104218859A - Voltage regulator and operation method thereof and voltage regulation system - Google Patents
Voltage regulator and operation method thereof and voltage regulation system Download PDFInfo
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- CN104218859A CN104218859A CN201310220981.6A CN201310220981A CN104218859A CN 104218859 A CN104218859 A CN 104218859A CN 201310220981 A CN201310220981 A CN 201310220981A CN 104218859 A CN104218859 A CN 104218859A
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Abstract
The invention discloses a voltage regulator and an operation method thereof and a voltage regulation system. The voltage regulator is coupled with a generator and a battery and comprises a voltage detection unit and a self-start assisting unit. The voltage detection unit is coupled with the generator and is used for detecting the output voltage of the generator to produce an enable signal. The self-start assisting unit is coupled with the voltage detection unit, the rotor of the generator and the battery and is capable of generating a first excitation current to drive the rotor to excite according to the enable signal. When the voltage detection unit detects that the output voltage is larger than a preset voltage threshold, the voltage detection unit outputs the enable signal to enable the self-start assisting unit to generate the first excitation current to the rotor of the generator, and the generator generates the voltage in low speed accordingly.
Description
Technical field
The present invention has about a kind of voltage regulator, and a kind of voltage regulator, its How It Works and voltage-regulating system with self-starting function particularly.
Background technology
The generator that existing automobile is used, as long as engine running just can generate electricity, provides electric energy for other electric equipments on storage battery charging and automobile after generating.Conventionally automobile can be controlled by voltage regulator is set the running of generator, and the output voltage that operated generator is produced is maintained at an operating voltage range.
In simple terms, general voltage regulator is the output that is connected to generator by automobile-used warning lamp and starting switch.Voltage regulator can, in the time of automobile starting, receive the electric current being provided by warning lamp, and by controlling the conducting of a power switch and end running the size of current of adjusting the rotor of the generator of flowing through, adjusts according to this energy output of generator.In the time that the output voltage of generator output is too high, voltage regulator can end power switch, to reduce the electric current of rotor, and in the time that the output voltage of generator output is too low, voltage regulator is understood conducting power switch, and controls the size of current of the rotor of flowing through, to adjust the energy output of generator.Therefore, voltage regulator can be in order to the output voltage of stable generator, guarantees that automotive interior maintains suitable electric weight for electric energy, so that the electric equipment in automobile can normal operation.
Traditional voltage regulator need provide exciting curent excitatory to rotor by 3 watts of warning lamps by storage battery, with the generating of starter-generator when the automobile starting.The rated power of the warning lamp that in addition, automobile is used at present changes the bulb of 2 watts or the light-emitting diode of high brightness (light-emitting diode, LED) into by the bulb (lamp) of 3 watts (W).But, the above-mentioned warning lamp that utilizes low rated power, or not external warning lamp and only can reduce by the mode that the inner self-excitation electric current producing carrys out starter-generator generating the exciting curent that exports rotor to, and generator cannot be turned round without enough exciting curents under the slow-speed of revolution, cause generator must under high rotating speed, could produce enough exciting curents to set up voltage and to power.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of voltage regulator, its How It Works and voltage-regulating system, and this voltage regulator can be by a built-in self-starting auxiliary unit in the time that generator starts, produce extra exciting curent and drive the rotor of generator to operate, make generator be able to set up voltage under the slow-speed of revolution.
The embodiment of the present invention provides a kind of voltage regulator, and this voltage regulator is to be coupled to generator and storage battery.Described voltage regulator comprises voltage detection unit and self-starting auxiliary unit.Voltage detection unit couples generator and storage battery.Voltage detection unit is in order to detect the output voltage of generator, to produce enable signal.Self-starting auxiliary unit couples rotor and the storage battery of voltage detection unit, generator.Self-starting auxiliary unit receives the supply power voltage of storage battery, and it is excitatory to produce the first exciting curent driving rotor according to enable signal.In the time that voltage detection unit detects that output voltage is greater than predeterminated voltage threshold value, voltage detection unit output enable signal activation self-starting auxiliary unit, to produce the rotor of the first exciting curent to generator, makes generator be able to set up voltage under the slow-speed of revolution.
In one of them embodiment of the present invention, above-mentioned voltage detection unit is to be coupled to one of multiple Excitation Diodes in the rectification unit of generator, to receive described output voltage.
In one of them embodiment of the present invention, above-mentioned voltage detection unit is the rotor that is coupled to generator, to receive described output voltage.
The embodiment of the present invention separately provides a kind of voltage-regulating system, and this voltage-regulating system comprises generator, storage battery, start unit and above-mentioned voltage regulator.Described generator comprises a rotor, and in order to produce output voltage.Storage battery couples generator, and in order to export supply power voltage.Start unit couples storage battery.Voltage regulator couples generator and storage battery.In the time that described voltage detection unit detects that the output voltage of generator is greater than predeterminated voltage threshold value, this voltage detection unit output enable signal activation self-starting auxiliary unit, to produce the rotor of the first exciting curent to generator, makes generator be able to set up voltage under low reporting.
The embodiment of the present invention separately provides a kind of How It Works of voltage regulator, and the method comprises the following steps.First, detect the output voltage of generator.Whether the output voltage that then, judges generator is greater than predeterminated voltage threshold value.In the time that output voltage is greater than predeterminated voltage threshold value, start self-starting auxiliary unit to produce the rotor of the first exciting curent to generator.
In sum, voltage regulator, its How It Works and voltage-regulating system that the embodiment of the present invention provides, can pass through in the built-in self-starting auxiliary circuit of voltage regulator, initiatively in the time that coming into operation, generator provide enough in advance exciting curent to generator in self-starting mode, make generator be able to Rapid Establishment voltage running smoothly under the slow-speed of revolution, and then improve the operational paradigm of generator.
For enabling further to understand feature of the present invention and technology contents, refer to following about detailed description of the present invention and accompanying drawing, but these explanations and appended graphic the present invention that are only used for illustrating but not are done any restriction to claim scope of the present invention.
Brief description of the drawings
Fig. 1 is the circuit framework schematic diagram of the voltage-regulating system that provides of the embodiment of the present invention.
Fig. 2 is the thin portion circuit diagram of the five-line voltage regulator that provides of the embodiment of the present invention.
Fig. 3 is the circuit running schematic diagram of the five-line voltage regulator that provides of the embodiment of the present invention.
Fig. 4 is the system architecture schematic diagram of the voltage-regulating system that provides of another embodiment of the present invention.
Fig. 5 is the circuit running schematic diagram of the five-line voltage regulator that provides of another embodiment of the present invention.
Fig. 6 is the schematic flow sheet of the running side of the voltage regulator that provides of the embodiment of the present invention.
Wherein, description of reference numerals is as follows:
10,20,30: voltage-regulating system
11,21,31: voltage regulator
111: voltage detection unit
1131: current amplification unit
Q2: darlington transistor
D2: the first diode
R1, R2: resistance
115,315: voltage-regulation driver element
Q1: power switch
D1: free-wheel diode
R3, R3A, R4～R10: resistance
C1, C2, C3: electric capacity
ZD1, ZD2: Zener diode
Tr1, Tr2: transistor
13: generator
131: rotor
133: threephase stator coil
135: rectification unit
T1: the first output
T2: the second output
T3: the 3rd output
15: storage battery
17: start unit
171: starting switch
173: warning lamp
P: voltage detecting end
B+: power end
D+: positive terminals
F: magnetic field terminals
G, GND: earth terminal
I1～I4: electric current
S100～S140: step
Embodiment
Main spirits of the present invention is providing a kind of voltage regulator with self-starting function, and this voltage regulator can assist connected generator realization to set up voltage under the slow-speed of revolution.And the part that the framework of generator is not the present invention focuses on, and affiliated technical field has and conventionally knows that the knowledgeable should know framework and the operation principles of generator, thus do not repeat at this, and only sketch part related to the present invention.
Please refer to Fig. 1, Fig. 1 illustrates the circuit framework schematic diagram of the voltage-regulating system that the embodiment of the present invention provides.Described voltage-regulating system 10 can be applicable to a mobile carrier (not illustrating), such as automobile, locomotive etc.Voltage-regulating system 10 comprises voltage regulator 11, generator 13, storage battery 15 and start unit 17.Wherein, the Power supply framework of voltage-regulating system 10 can decide according to the actual specification of storage battery 15, storage battery 15 can be by storage battery (rechargeable battery) in practice, and the storage battery of for example 12 volts (V) or 24 volts is realized.
In the present embodiment, voltage regulator 11 has the five-line voltage regulator (5-pin regulator) of self-starting function for the present invention.Voltage regulator 11 has power end B+, positive terminals D+, magnetic field terminals F, voltage detecting end P and earth terminal G.Generator 13 has the first output T1, the second output T2, the 3rd output T3 and earth terminal GND.Generator 13 further comprises rotor (rotor coil) 131, threephase stator coil (3-phase stator coil) 133 and rectification unit 135.Start unit 17 further comprises starting switch 171 and warning lamp 173.Described warning lamp 173 can be to be realized by one or more light-emitting diode connection in series-parallel or the bulb of 2 watts.In other execution modes, voltage regulator 11 also can not be connected warning lamp 173 with generator 13, and only connects storage battery 15 by starting switch 171.
As shown in Figure 1, the threephase stator coil 133 of generator 13 is electrically connected rectification unit 135.The rectification unit 135 of generator 13 is electrically connected respectively the first output T1, the second output T2 and earth terminal GND.The rectification unit 135 of generator 13 comprises rectifier (rectifier) and three Excitation Diodes (exciting diode).Three-phase type rectifier is made up of three pairs two rectifier diode circuit of mutually connecting, and the three-phase alternating current electric rectification of three-phase type rectifier in order to threephase stator coil 133 is produced.Every pair of another coupled in series of rectifier diode series circuit is between the second output T2 and earth terminal GND.Three Excitation Diodes are respectively coupled between threephase stator coil 133 and the first output T1.Specifically, the anode of each Excitation Diode is coupled to a wherein phase stator coil of threephase stator coil 133, and the negative electrode of each Excitation Diode couples the first output T1.
The first output T1 of generator 13 is electrically connected the first end of rotor 131 and the positive terminals D+ of voltage regulator 11, and in order to provide exciting curent to rotor 131 under generator 13 normal power generation.The first output T1 of generator 13 is separately electrically connected the positive terminal of storage battery 15 through the starting switch 171 of start unit 17 and warning lamp 173.The second output T2 of generator 13 is electrically connected the positive terminal of storage battery 15, storage battery 15 is charged and the running that maintains other electric equipments on mobile carrier under generator 13 normal power generation.In generator 13, threephase stator coil 133 is the known technology of those skilled in the art of the present technique with actual framework and the function mode of rectification unit 135, therefore not in this to go forth.
The power end B+ of voltage regulator 11 is electrically connected the positive terminal of storage battery 15.The positive terminals D+ of voltage regulator 11 and starting switch 171, warning lamp 173 are connected in series in the positive terminal of storage battery 15, and are electrically connected the first output T1 of generator 13.Magnetic field terminals F is electrically connected the second end of rotor 131, and is electrically connected the first output T1 of generator 13 via rotor 131.The rotor 131 of generator 13 is electrically connected between the positive terminals D+ and magnetic field terminals F of voltage regulator 11.Voltage detecting end P is electrically connected the 3rd output T3 of generator 13.In addition all ground connection of negative pole of the earth terminal G of the earth terminal GND of generator 13, voltage regulator 11 and storage battery 15.
Say further, voltage regulator 11 comprises voltage detection unit 111, self-starting auxiliary unit 113 and voltage-regulation driver element 115.Voltage detection unit 111 couples self-starting auxiliary unit 113, and self-starting auxiliary unit 113 couples voltage-regulation driver element 115.
Voltage detection unit 111 couples the 3rd output T3 of generator 13 through voltage detecting end P, to detect the voltage level of phase signals (phase signal) of the 3rd output T3 output of generator 13.Voltage detection unit 111 also couples storage battery 15 through power end B+, the supply power voltage of exporting to receive storage battery 15 with voltage-regulation driver element 115 and self-starting auxiliary unit 113.Contact (being positive terminals D+) between self-starting auxiliary unit 113 and voltage-regulation driver element 115 couples the first end of rotor 131.Voltage-regulation driver element 115 couples the second end of rotor 131 through magnetic field terminals F.Voltage detection unit 111 and voltage-regulation driver element 115 are through earth terminal G ground connection.
Voltage detection unit 111 is in the time that the voltage level of the phase signals of the 3rd output T3 output of generator 13 is greater than predeterminated voltage threshold value, and output enable signal is to drive self-starting auxiliary unit 113 to operate.Described predeterminated voltage threshold value can arrange according to actual framework and the function mode of generator 13, and the present invention does not limit this value.In the present embodiment, predeterminated voltage threshold value can be between 0.1 volt (V) to 0.5 volt (V).In other words, voltage detection unit 111 can judge whether generator 13 comes into operation by detecting the output voltage of the 3rd output T3.
Self-starting auxiliary unit 113 produces the first exciting curent according to the power supply of enable signal and storage battery 15, and exports the first exciting curent to rotor 131 through positive terminals D+, produces magnetic field.Wherein, self-starting auxiliary unit 113 can be set according to the actual market application demand adjustment of voltage regulator 11 size of the first exciting curent.
In addition, in the time that self-starting auxiliary unit 113 cannot be exported the first exciting curent, for example, when self-starting auxiliary unit 113 senses generator 13 in the time that the output voltage of the first output T1 rises to a cut-ff voltage of self-starting auxiliary unit 113 through positive terminals D+, self-starting auxiliary unit 113 can operate in automatic cut-off, and stops exporting the first exciting curent.
Voltage-regulation driver element 115 is in order to complete and to set up after voltage at generator 13, control conducting and the deadline of a power switch Q1 according to the voltage of power end B+ (being the output voltage of the second output T2 of generator 13) adjustment, drive rotor 131 excitatory to produce the second exciting curent, adjust generator 13 in the output voltage of the second output T2.
Maximum operation voltage value of the present invention and minium operation voltage value can arrange according to generator 13 and actual framework and the running demand of storage battery 15.Separately, voltage-regulation driver element 115 is the voltage regulator circuit of generator 13, and the function mode of its actual framework and regulator generator 13 is the technology that those skilled in the art of the present technique should be able to understand, therefore not in this to go forth.
In the operation principles of this simple declaration voltage-regulating system 10, in the time that user opens the starting switch 171 of start unit 17 (that is in the time that starting switch 171 has just started conducting), warning lamp 173 can be connected and open with storage battery 15 because of starting switch 171 conductings, and produces a micro-current and flow into rotor 131 via starting switch 171.Now, electric equipment on automobile is now to be powered by storage battery 15 voltages, and current generated threephase stator coil 133 entrys into service that only can make generator 13 of warning lamp 173 produce small voltage, the same time, voltage detection unit 111 can receive and detect the voltage level of generator 13 in the phase signals of the 3rd output T3 output by voltage detecting end P.
For example, in the time that voltage detection unit 111 detects that the voltage of the 3rd output T3 is greater than predeterminated voltage threshold value (0.2 volt), self-starting auxiliary unit 113 can produce the first enough exciting curent immediately makes the excitatory generation of rotor 131 magnetic field drive generator 13 to operate, and sets up voltage.And the three-phase alternating voltage that the threephase stator coil 133 of generator 13 produces subsequently can be after rectification unit 135 rectifications exports respectively positive terminals D+ and the storage battery 15 of voltage regulator 11 to through the first output T1 and the second output T2, to maintain other electric equipments runnings of generator 13 and storage battery 15 and mobile carrier.
Along with the startup of generator 13, the rotating speed of generator 13 can raise gradually, and output voltage also can be along with rotating speed raises and rises.In the time that the voltage of positive terminals D+ (i.e. the first output T1) rises to the cut-ff voltage of self-starting auxiliary unit 113, self-starting auxiliary unit 113 can operate to stop exporting the first exciting curent in instant cut-off.Now, voltage-regulation driver element 115 can, by the conducting of regulating power switch and cut-off running, be adjusted the size of the second exciting curent, and then controls the energy output of generator 13.And the second exciting curent path is to earth terminal G by the first output T1, positive terminals D+, rotor 131, magnetic field terminals F.Generator 13 in the output voltage of the second output T2 as aforementioned be in order to other electric equipments on for storage battery 15 chargings and mobile carrier.
In addition, in other execution modes, the voltage detecting end P of voltage regulator 11 also can be electrically connected the output line that in the rectification unit 135 of generator 13 arbitrary connects Excitation Diode, detect any phase signals voltage level in three-phase ac signal, as long as the output voltage of generator 13 can be detected.
In brief, the present invention can be by built-in self-starting auxiliary unit 113 in voltage regulator 11, and improving current warning lamp 173 cannot provide enough exciting curents to rotor 131 in the time of automobile starting, to drive the problem of running of generator 13.
The present embodiment further provides a kind of physical circuit framework of five-line voltage regulator, and is described further for self-starting auxiliary unit 113 wherein.Referring to Fig. 1, Fig. 2 and Fig. 3.Fig. 2 is the thin portion circuit diagram of the five-line voltage regulator that provides of the embodiment of the present invention.Fig. 3 is the circuit running schematic diagram of the five-line voltage regulator that provides of the embodiment of the present invention.
Self-starting auxiliary unit 113 comprises current amplification unit, the first resistance element, the second resistance element and current direction limiting element.Current amplification unit couples the first resistance element, the second resistance element and current direction limiting element.Current amplification unit has input, output and control end.Current amplification unit is in order to adjust the size of the first exciting curent I3 according to the voltage swing of enable signal.
In the present embodiment, current amplification unit comprises N-type darlington transistor Q2; The first resistance element comprises resistance R 1; The second resistance element comprises resistance R 2; Current direction limiting element comprises diode D2.
One end of resistance R 1 is electrically connected power end B+, and the other end is electrically connected the collector (collector) of N-type darlington transistor Q2.In other words, the collector of N-type darlington transistor Q2 receives the supply power voltage of storage battery 15 through resistance R 1, power end B+.One end of resistance R 2 is electrically connected power end B+, and the other end is electrically connected voltage detection unit 111.The base stage (base) of N-type darlington transistor Q2 is electrically connected voltage detection unit 111, to receive enable signal.The emitter-base bandgap grading (emitter) of N-type darlington transistor Q2 is electrically connected the anode (anode) of diode D2.The negative electrode (cathode) of diode D2 is electrically connected positive terminals D+.Described diode D2 avoids the high voltage of positive terminals D+ to damage N-type darlington transistor Q2.
In addition, the circuit of voltage-regulation driver element 115 is as shown in Figure 2 in order to according to conducting or the deadline (that is responsibility cycle of power switch Q1) of the voltage control power switch Q1 of positive terminals D+, produce the second exciting curent I4 with correspondence and adjust the magnetic field intensity of rotor 131 because of excitatory generation, adjust according to this output voltage of generator 13.
Illustrate for the main operation principles of voltage regulator 11 below.
In the time of automobile starting, voltage detection unit 111 can detect through voltage detecting end P the output voltage of generator 13, for example, for example, when in Fig. 1, the voltage level of the phase signals of the 3rd output T3 output is greater than predeterminated voltage threshold value (0.2 volt), the N-type darlington transistor Q2 that voltage detection unit 111 corresponding output enable signal make self-starting auxiliary unit 113 is greater than conducting voltage (for example 1.4 volts) conducting of N-type darlington transistor Q2 because of the cross-pressure between base emitter-base bandgap grading.
Now, N-type darlington transistor Q2 can and form the first exciting curent path after conducting, and provides the first exciting curent I3 to rotor 131, to assist generator 13 to set up voltage under the slow-speed of revolution.Described the first exciting curent path is to earth terminal G as shown in Figure 3 by power end B+, N-type darlington transistor Q2, diode D2, positive terminals D+, rotor 131, magnetic field terminals F.The electric current I 1 that voltage detection unit 111 can be inputted according to the resistance R 2 of being flowed through by storage battery 15 is adjusted the voltage level of enable signal, with the corresponding first exciting curent I3 that produces of driving N type darlington transistor Q2.The size of described the first exciting curent I3 is mainly to adjust by the resistance value of resistance R 1, can set according to the practical application of voltage regulator 11.Generator 13 and then can make generator 13 be able to Rapid Establishment voltage under the slow-speed of revolution because of the excitatory rotor 131 of the first exciting curent I3.
Then, in the time that the voltage of positive terminals D+ rises to the cut-ff voltage of self-starting auxiliary unit 113 because of generator 13 runnings, now N-type darlington transistor Q2 can for example, end because of the conducting voltage (1.4 volts) that the pressure reduction between base voltage (being the voltage level of voltage detection unit 111 output enable signals) and emitter voltage (being the voltage of positive terminals D+) is less than N-type darlington transistor Q2, makes the 113 cut-off runnings of self-starting auxiliary unit.
The cut-ff voltage of self-starting auxiliary unit of the present invention can be set according to the circuit framework of self-starting auxiliary unit 113 and generator 13 runnings, and the present embodiment does not limit./ 2nd of a supply power voltage that the cut-ff voltage of self-starting auxiliary unit 11 can for example be exported for storage battery 15.Taking the Power supply frameworks of 24 volts as example, be more than or equal to 12 volts when self-starting auxiliary unit 113 senses generator 13 in the output voltage of the first output T1, or level off to 12 volts time, self-starting auxiliary unit 113 can automatic cut-off running.
Then, in the time that voltage-regulation driver element 115 exceedes the maximum operation voltage value of generator 13 by the output voltage rising of the second output T2 of power end B+ detection generator 13, voltage-regulation driver element 115 can be by shortening the ON time of power switch Q1 in a work period, reduce the second exciting curent I4, to reduce the electric weight of rotor 131, reduce according to this output voltage of generator 13.The output voltage of the second output T2 that detects generator 13 by power end B+ when voltage-regulation driver element 115 is during lower than the minium operation voltage value of generator 13, can be by increasing the ON time of power switch Q1 in a work period, increase by the second exciting curent I4, improve the output voltage of generator 13, as the output voltage of the second output T2.
Accordingly, the voltage regulator 11 of the present embodiment can be initiatively in the time that detection generator 13 comes into operation, provide enough exciting curents by built-in self-start circuit, drive the running of generator 13, make generator 13 be able to set up smoothly fast voltage under the slow-speed of revolution.In addition, voltage regulator 11 also can be set up after voltage in motor 13, automatically closes built-in self-start circuit, reduces the power consumption of voltage regulator 11.
Resistance element in the present invention, for example resistance R 1～R10 is made up of conductor ink, power switch Q1 can be N-type power MOSFET transistor, also can be metal-oxide half field effect transistor (MOSFET), P type power MOSFET transistor, Darlington pipe (Darlington) or insulated gate bipolar transistor (IGBT), but the present invention be as limit.
Please refer to Fig. 4 while with reference to Fig. 1, Fig. 4 illustrates another embodiment of the present invention provides the system architecture schematic diagram of voltage-regulating system.
The difference of Fig. 4 and Fig. 1 be in, in Fig. 4, the voltage regulator 21 of voltage-regulating system 20 is four-wire type voltage regulator, and voltage regulator 21 has power end B+, positive terminals D+, magnetic field terminals F and earth terminal G.Voltage detection unit 111 is to be electrically connected positive terminals D+, to detect the output voltage of the first output T1 of generator 13.Namely, voltage detection unit 111 can start according to positive terminals D+ voltage (being the output voltage of the first output T1 of generator 13) running of self-starting auxiliary unit 113.When the output voltage that detects the first output T1 when voltage detection unit 111 is greater than predeterminated voltage threshold value, voltage detection unit 111 meeting output enable signal activation self-starting auxiliary units 113, to produce the first exciting curent to rotor 131, drive the running of generator 13.
Owing to differing the pressure drop of an Excitation Diode between the positive voltage (being the first output T1 of generator 13) of terminals D+ and the voltage (being the first output T3 of generator 13) of aforesaid voltage test side P, therefore the voltage detecting susceptibility of positive terminals D+ is low compared with the voltage detecting susceptibility of aforesaid voltage test side P.Thereby the predeterminated voltage threshold value described in the present embodiment can be low compared with previous embodiment, for example, it is 0.1 volt, to strengthen the susceptibility of detection.
But in this embodiment, can directly voltage detection unit 111 be connected with positive terminals D+, thereby without separately putting a terminal in voltage regulator 21, can reduce accordingly risk and cost of manufacture in voltage regulator 21 runnings.Existing, the voltage regulator 21 of using when automobile has more multiterminal, and its risk of bearing is larger, the probability occurring as increased short circuit.
Other circuit frameworks of the voltage regulator 21 of voltage-regulating system 20 are similar to the voltage regulator 11 of voltage-regulating system 10 in Fig. 1, and the technology of the present invention those skilled in the art should above-mentioned explanation know the function mode of voltage regulator 21 by inference, therefore do not repeat them here.In addition, the technology of the present invention those skilled in the art should select the voltage regulator of four-wire type or five-line to drive the running of controlling generator 13 according to the generator 13 entity frameworks and the running demand that are applied to automobile.
It is the energy output that carrys out regulator generator by detecting generator in the voltage of the second output that the voltage regulator of the built-in self-starting auxiliary circuit of aforementioned tool completes after setting up voltage in generator.But voltage regulator also can be applied according to actual product, can carry out by detecting generator the energy output of regulator generator in the voltage of the first output.Please refer to Fig. 5 while with reference to Fig. 1.
Fig. 5 illustrates the five-line voltage regulator (5-pin regulator) that another embodiment of the present invention provides.Voltage regulator 31 has power end B+, positive terminals D+, magnetic field terminals F, voltage detecting end P and earth terminal G.Generator 13 has the first output T1, the second output T2, the 3rd output T3 and earth terminal GND.
The difference of Fig. 5 and Fig. 1 be in, in Fig. 5, the voltage-regulation driver element 315 of voltage regulator 31 is the first output T1 that couple generator 13 through positive terminals D+.Voltage-regulation driver element 315 separately couples rotor (not being illustrated in Fig. 5) through magnetic field terminals F.Accordingly, the voltage-regulation driver element 315 of voltage regulator 31 completes and sets up after voltage in generator 13, can detect generator 13 in the output voltage of the first output T1 by positive terminals D+.Voltage regulator 31 voltage that can detect according to positive terminals D+ regulate power ratio control switch Q1 conducting and ratio of deadline within a work period, produce the second exciting curent I4 drive rotor 131 with correspondence, adjust the energy output of generator 13.
Fig. 6 illustrates the operation workflow schematic diagram of the voltage regulator that the embodiment of the present invention provides, and please refer to Fig. 6 and simultaneously with reference to Fig. 1 and Fig. 2.
First,, in step S100, the voltage detection unit 111 of driving voltage adjuster 11 detects the output voltage of generator 13.Described output voltage can be the output voltage of the first output T1 of generator 13 or the output voltage of the 3rd output T3 of generator 13 in the present embodiment.
Secondly,, in step S110, the voltage detection unit 111 of voltage regulator 11 judges whether the output voltage of generator 13 is greater than predeterminated voltage threshold value.In the time that voltage detection unit 111 judges that the output voltage of generator 13 is greater than predeterminated voltage threshold value, execution step S120.Otherwise, in the time that voltage detection unit 111 judges that the output voltage of generator 13 is less than predeterminated voltage threshold value, get back to step S100.Described predeterminated voltage threshold value can be for example between 0.1 volt to 0.5 volt in the present embodiment.
Thereafter,, in step S120, voltage detection unit 111 output enable signal activation self-starting auxiliary units 113, drive the rotor 131 of generator 13 excitatory to produce the first exciting curent, and then drive the running of generator 13.
Subsequently, in step S130, self-starting auxiliary unit 113 judges by positive terminals D+ whether the output voltage of the first output T1 of generator 13 is more than or equal to the cut-ff voltage of self-starting auxiliary unit 113.If self-starting auxiliary unit 113 judges when the output voltage of the first output T1 of generator 13 is approximately more than or equal to the cut-ff voltage of self-starting auxiliary unit 113, execution step S140.Otherwise, in the time that the output voltage of the first output T1 is less than the cut-ff voltage of self-starting auxiliary unit 113, get back to step S130, the output voltage that self-starting auxiliary unit 113 continues to produce the first exciting curent and detects generator 13.
In step S140, in the time that self-starting auxiliary unit 113 judges that by positive terminals D+ the output voltage of the first output T1 of generator 13 is approximately more than or equal to the cut-ff voltage of self-starting auxiliary unit 113 (represent generator 13 set up smoothly voltage), self-starting auxiliary unit 113 can operate in automatic cut-off, to cut off the current path of the first exciting curent.In other words, self-starting auxiliary unit 113 can decommission after the Preset Time after being activated automatically, to reduce the power consumption of voltage regulator 11.
Then, under generator 13 normal operation generatings, voltage-regulation driver element 115 can regulate the conducting of power ratio control switch deadline according to the output voltage of generator 13 (as the voltage of the second output T2), to adjust the second exciting curent size of output, and then the corresponding output voltage of adjusting generator 13.
Though said method embodiment explains with five-line voltage regulator, the technology of the present invention those skilled in the art should be known by inference How It Works and be applied to by upper explanation the mode of another five-line voltage regulator 31 shown in the voltage regulator 21 of four-wire type shown in Fig. 4 or Fig. 5.And Fig. 6 is only in order to a kind of function mode of account for voltage adjuster 11, be not in order to limit the present invention.
The relation that couples in above-described embodiment between element comprises direct or indirect electric connection, as long as can reach required electrical signal transfer function, the present invention is not limited.Technological means in above-described embodiment can merge or use separately, and its element can increase, remove, adjust or replace according to its function and design requirement, and the present invention is not limited.After the explanation via above-described embodiment, those skilled in the art of the present technique should know its execution mode by inference, do not add tired stating at this.
In sum, voltage regulator, its How It Works and voltage-regulating system that the embodiment of the present invention provides, can pass through in the built-in self-starting auxiliary circuit of voltage regulator, with in the time that generator comes into operation, initiatively produce pre-exciting curent to assist generator Rapid Establishment voltage under the slow-speed of revolution.Thereby can improve current warning lamp because the rotor of enough exciting curents to generator cannot be provided when the automobile starting, make generator under high rotating speed, just can complete and set up voltage, and then improve the power benefit of generator and reduce the power consumption of storage battery in the time starting.
Claims (13)
1. a voltage regulator, is coupled to a generator and a storage battery, it is characterized in that this voltage regulator comprises:
One voltage detection unit, couples this generator and this storage battery, and this voltage detection unit is in order to detect an output voltage of this generator, to produce an enable signal; And
One self-starting auxiliary unit, couples a rotor and this storage battery of this voltage detection unit, this generator, and this self-starting auxiliary unit receives a supply power voltage of this storage battery, and produces one first exciting curent according to this enable signal and drive this rotor excitatory;
Wherein, in the time that this voltage detection unit detects that this output voltage is greater than a predeterminated voltage threshold value, this voltage detection unit is exported this self-starting auxiliary unit of this enable signal activation to produce this first exciting curent this rotor to this generator, makes this generator be able to set up voltage under the slow-speed of revolution.
2. voltage regulator as claimed in claim 1, wherein this self-starting auxiliary unit comprises:
One first resistance, the first end of this first resistance couples this storage battery;
One second resistance, the first end of this second resistance couples this storage battery, and the second end of this second resistance couples this voltage detection unit;
One current amplification unit, has an input, an output and a control end, and this input couples the second end of this first resistance, and this output couples this rotor of this generator, and this control end couples this voltage detection unit, to receive this enable signal; And
One first diode, the anode of this first diode couples this output, and the negative electrode of this first diode couples this rotor of this generator;
Wherein this current amplification unit is to produce this first exciting curent according to this enable signal.
3. voltage regulator as claimed in claim 2, wherein this current amplification unit is a darlington transistor.
4. voltage regulator as claimed in claim 1, wherein, in the time that this output voltage rises to a cut-ff voltage of this self-starting auxiliary unit, this self-starting auxiliary unit automatic cut-off operates.
5. voltage regulator as claimed in claim 1, wherein this voltage detection unit is to be coupled to one of multiple Excitation Diodes in a rectification unit of this generator, to receive this output voltage.
6. voltage regulator as claimed in claim 1, also comprises:
One voltage-regulation driver element, couple this rotor of this generator, in order to regulate conducting or the deadline of a power switch according to this output voltage, produce one second exciting curent with correspondence and drive this rotor excitatory, and adjust according to this this output voltage of this generator.
7. a voltage-regulating system, is characterized in that comprising:
One generator, comprises a rotor, in order to produce an output voltage;
One storage battery, couples this generator, in order to export a supply power voltage;
One starting switch, couples this storage battery; And
One voltage regulator, couples this generator and this storage battery, and this voltage regulator comprises:
One voltage detection unit, couples this generator, and this voltage detection unit is in order to detect an output voltage of this generator and to produce an enable signal; And
One self-starting auxiliary unit, couples this rotor and this storage battery of this voltage detection unit, this generator, and this self-starting auxiliary unit receives this supply power voltage of this storage battery, and according to this enable signal, produces one first exciting curent and drive this rotor excitatory;
Wherein, in the time that this voltage detection unit detects that this output voltage is greater than a predeterminated voltage threshold value, this voltage detection unit is exported this self-starting auxiliary unit of this enable signal activation to produce this first exciting curent this rotor to this generator, makes this generator be able to set up voltage under the slow-speed of revolution.
8. voltage-regulating system as claimed in claim 7, wherein this self-starting auxiliary unit comprises:
One first resistance, the first end of this first resistance couples this storage battery;
One second resistance, the first end of this second resistance couples this storage battery, and the second end of this second resistance couples this voltage detection unit;
One current amplification unit, has an input, an output and a control end, and this input couples the second end of this first resistance, and this output couples this rotor of this generator, and this control end couples this voltage detection unit, to receive this enable signal; And
One first diode, the anode of this first diode couples this output, and the negative electrode of this first diode couples this rotor of this generator;
Wherein this current amplification unit is to produce this first exciting curent according to this enable signal.
9. voltage-regulating system as claimed in claim 8, wherein this current amplification unit is a darlington transistor.
10. voltage-regulating system as claimed in claim 7, wherein this voltage detection unit is one of multiple Excitation Diodes that are coupled to a rectification unit of this generator, to receive this output voltage.
11. voltage-regulating systems as claimed in claim 7, wherein, in the time that this output voltage rises to the cut-ff voltage of this self-starting auxiliary unit, this self-starting auxiliary unit automatic cut-off operates.
The How It Works of 12. 1 kinds of voltage regulators, is characterized in that this How It Works comprises:
Detect an output voltage of a generator;
Whether this output voltage that judges this generator is greater than a predeterminated voltage threshold value; And
In the time that this output voltage is greater than this predeterminated voltage threshold value, start a self-starting auxiliary unit, to produce the rotor of one first exciting curent to this generator.
13. How It Works as claimed in claim 12, wherein, in producing this first exciting curent to this step of this rotor of this generator, also comprise:
In the time that this output voltage rises to a cut-ff voltage of this self-starting auxiliary unit, this self-starting auxiliary unit automatic cut-off running.
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| CN104218859B (en) | 2017-03-01 |
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