CN103513587A - Load control device - Google Patents
Load control device Download PDFInfo
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- CN103513587A CN103513587A CN201210510507.2A CN201210510507A CN103513587A CN 103513587 A CN103513587 A CN 103513587A CN 201210510507 A CN201210510507 A CN 201210510507A CN 103513587 A CN103513587 A CN 103513587A
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Abstract
The invention provides a load control device which comprises a first controller, a switching unit and a first energy storage unit. The first controller detects the level of the power signal and generates a control signal according to the detection result. The switching unit is electrically connected to the first end of the load through a first wire. In addition, the switching unit determines whether to conduct the second wiring to the second end of the load according to the control signal, and switches the current direction of the operation current transmitted by the second wiring. The first energy storage unit comprises a first energy storage element and responds to the switching of the current direction of the operating current, so that the first energy storage element is connected with the load in parallel or connected between the first wiring and the second wiring in series.
Description
Technical field
The present invention relates to a kind of load control device, relate in particular to a kind of in order to control the load control device of the power supply that is supplied to load.
Background technology
Generally speaking, all types of electric equipments, for example: lighting device, Climate Control Module, fan ... etc., all can control the power supply that is supplied to electric equipment by a load control device in the use, and and then control the state of electric equipment.For example, with regard to lighting device, load control device can utilize constant current or the mode of voltage stabilizing to control the power supply being supplied in lighting device, for example, to cause light-emitting component in lighting device (: the light emitting diode of serial connection) can be normally driven.
Yet, when carrying out power supply control in the mode of constant current, for the serial connection light emitting diode with low forward voltage, existing load control device can be guaranteed the time that light emitting diode is lit, but can cause the power consumption of load control device itself excessive, and then increase the operating temperature of load control device.In addition, when carrying out power supply control in the mode of voltage stabilizing, existing load control device conventionally must arrange take the power supply changeover device (power converter) that transformer is agent structure, and then causes the increase of the production cost of load control device.Another way is directly to deposit dispatch from foreign news agency maximum level voltage with a large electric capacity after full-bridge rectification, then with this capacitances to supply power the mode to load; The cost of this method is low, but can be because power factor is too poor, only in moment of the high point of nearly voltage to electric power system power taking, cause electric current extreme uneven and cause the great burden of electric power system.
Therefore, how reducing power consumption and the production cost of load control device, has been the load control device problem that the utmost point need solve in design.
Summary of the invention
The invention provides a kind of load control device, utilize string the switching of energy-storage travelling wave tube and load, reclaim the energy that load does not use, and then reduce power consumption and the production cost of load control device.
The invention provides a kind of load control device, comprise the first controller, switch unit and the first energy-storage units.The first controller detects the level of power supply signal, and produces control signal according to testing result.Switch unit is electrically connected to the first end of load by the first distribution.In addition, whether switch unit determines the second end to load by the second distribution conducting according to control signal, and switches according to this direction of current of the operating current that the second distribution transmits.The first energy-storage units comprises the first energy-storage travelling wave tube, and in response to the switching of the direction of current of operating current, and causes the first energy-storage travelling wave tube in parallel with load or be connected between the first distribution and the second distribution.
In one embodiment of this invention, above-mentioned switch unit comprises the first transistor and transistor seconds.In addition, switch unit is controlled the first transistor according to control signal, and one of them of conducting the first transistor and transistor seconds.Moreover, the second distribution can be along with the conducting of transistor seconds conducting to the second end of load.
In one embodiment of this invention, above-mentioned load control device also comprises N the second energy-storage units.Wherein, described N the second energy-storage units comprises one second energy-storage travelling wave tube separately, and has separately one first to 1 the 4th end.In addition, first end and second end of described N the second energy-storage units are electrically connected respectively the first distribution and the second distribution, described N the second energy-storage units is also serially connected between second end and the first energy-storage units of load by its 3rd end and the 4th end, and individual the second energy-storage units of described N is in response to the switching of the direction of current of operating current, and causing described N the second energy-storage travelling wave tube be connected in parallel between the first distribution and the second distribution or be serially connected between second end and the first energy-storage travelling wave tube of load, N is positive integer.
In one embodiment of this invention, above-mentioned load control device also comprises N switch and second controller.Wherein, the first end of i switch is electrically connected to the 3rd end of i the second energy-storage units, and the second end of i switch is electrically connected to the 4th end of individual the second energy-storage units of i, and i is integer and 1≤i≤N.Second controller detects the level of power supply signal, and opens one by one or close a described N switch according to testing result.
Based on above-mentioned, the present invention carrys out the connection status of switch load and energy-storage travelling wave tube by switch unit, and then causes load or and to connect at least one energy-storage travelling wave tube along with the height serial connection of the level of power supply signal.In addition, by string the switching of load and energy-storage travelling wave tube, load control device can be recovered to the energy that load does not use further, and then reduce the power consumption of load control device.In addition, with prior art in comparison, load control device, without power supply changeover device is additionally set, just can provide a metastable voltage to load, and then reduces the production cost of load control device.
For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and shown in coordinating, accompanying drawing is described in detail below.
Accompanying drawing explanation
Fig. 1 is the schematic diagram according to the load control device of one embodiment of the invention;
Fig. 2 is the schematic diagram according to the load control device of another embodiment of the present invention;
Fig. 3 is the schematic diagram according to the load control device of another embodiment of the present invention;
Fig. 4 A and Fig. 4 B are the schematic diagram according to the load control device of another embodiment of the present invention;
Fig. 5 A and Fig. 5 B are according to the schematic diagram of the load control device of an embodiment more of the present invention;
Fig. 6 A and Fig. 6 B are the schematic diagram according to the load control device of another embodiment of the present invention.
Description of reference numerals:
100,200,300,401,402,501,502,601,602: load control device;
101: load;
T1: the first end of load;
T2: the second end of load;
110: the first controllers;
120: switch unit;
130: the first energy-storage units;
MN1, MN2, MN3, MN4:N transistor npn npn;
MP1, MP2, MP3, MP4:P transistor npn npn;
R1: resistance;
ZD1: Zener diode;
D1～D5: diode;
C1: the first energy-storage travelling wave tube;
L1: the first distribution;
L2: the second distribution;
VS: power supply signal;
CT: control signal;
211: the first direction of current;
212: the second direction of current;
210,210_1～210_2: the second energy-storage units;
T31: the first end of the second energy-storage units;
T32: the second end of the second energy-storage units;
T33: the 3rd end of the second energy-storage units;
T34: the 4th end of the second energy-storage units;
C2: the second energy-storage travelling wave tube;
SW31～SW33: switch;
310: second controller.
Embodiment
Fig. 1 is the schematic diagram according to the load control device of one embodiment of the invention.With reference to Fig. 1, load control device 100 receives and regulates a power supply signal VS, and the power supply signal VS regulating is sent to load 101, with the power supply of control load 101.Wherein, load control device 100 comprises the first controller 110, switch unit 120 and the first energy-storage units 130.
In the present embodiment, power supply signal VS can be for example the AC signal after full-wave rectification.In addition, the first controller 110 can detect the level of power supply signal VS, and when the level of power supply signal VS is greater than a predeterminated voltage, produces and (for example: control signal CT logical one) have the first level.Relatively, when the level of power supply signal VS is not more than described predeterminated voltage, the first controller 110 (for example: control signal CT logical zero) has second electrical level by generation.
In operation, (for example: during control signal CT logical one), N-type transistor MN1 is conducting, and then the control end of N-type transistor MN2 is pulled down to earth terminal when receiving, switch unit 120 there is the first level.In addition, Zener diode ZD1 now will maintain under forward bias voltage drop, and then guarantee that N-type transistor MN2 maintains under the state of not conducting.Relatively, the second distribution L2 cannot conducting to the second end T2 of load 101.Moreover along with the conducting along inclined to one side and N-type transistor MN1 of Zener diode ZD1, the operating current that the second distribution L2 transmits will be led to the first direction of current 211.
On the other hand, (for example: during control signal CT logical zero), N-type transistor MN1 cannot conducting, and then impels Zener diode ZD1 to maintain under reverse bias when receiving, switch unit 120 there is second electrical level.Along with Zener diode ZD1 contrary, N-type transistor MN2 will be switched to conducting state partially, so by the second distribution L2 conducting the second end T2 to load 101.By this, the operating current that the second distribution L2 transmits will be led to the second direction of current 212.In other words, whether switch unit 120 can determine according to control signal CT the second end T2 to load 101 by the second distribution L2 conducting, and switches according to this direction of current of the operating current that the second distribution L2 transmits.
The first energy-storage units 130 comprises diode D1, diode D2 and the first capacitor C 1 (that is first energy-storage travelling wave tube).Wherein, the negative electrode of diode D1 is electrically connected the first distribution L1, and the anode of diode D1 is electrically connected to the second distribution L2 by the first capacitor C 1.The anode of diode D2 is electrically connected the second end T2 of load 101, and the negative electrode of diode D2 is electrically connected the anode of diode D1.
In operation, when switch unit 120 is according to control signal CT conducting N-type transistor MN1 and while closing N-type transistor MN2, that is the operating current transmitting as the second distribution L2 is while being led to the first direction of current 211, diode D1 will be biased under reverse bias, and diode D2 will be biased under forward bias voltage drop.That is diode D1 now cannot conducting, and diode D2 is by conducting.By this, load 101 and the first capacitor C 1 will be connected between the first distribution L1 and the second distribution L2.In other words, when the level of power supply signal VS is enough when high, for example, when the level of power supply signal VS is greater than predeterminated voltage, load control device 100 can be supplied to load 101 by power supply signal VS, and the first capacitor C 1 is charged simultaneously.It should be noted that the first capacitor C 1 is the power supply receiving from load 101, therefore the first capacitor C 1 can be described as the energy that utilizes load 101 not use and charges.
On the other hand, when switch unit 120 is closed N-type transistor MN1 conducting N-type transistor MN2 according to control signal CT, that is the operating current transmitting as the second distribution L2 is while being led to the second direction of current 212, diode D1 is by conducting, and diode D2 cannot conducting.By this, load 101 and the first capacitor C 1 will be connected in parallel between the first distribution L1 and the second distribution L2.Thus, when the level of power supply signal VS is lower, for example, when the level of power supply signal VS is not more than predeterminated voltage, the first capacitor C 1 will be discharged to load 101.In other words, the first energy-storage units 130 is can be in response to the switching of the direction of current of operating current, and causes the first capacitor C 1 in parallel with load 101 or be connected between the first distribution L1 and the second distribution L2.
In general, string switching by the first capacitor C 1 with load 101, load control device 100 can reclaim the energy that load 101 does not use further, and then reduce the power consumption of load control device 100.In addition,, by discharging and recharging of the first capacitor C 1, load control device 100 can provide a metastable voltage to load 101.In other words, load control device 100 take without arranging the power supply changeover device that transformer is agent structure, just can provide a metastable voltage to load 101, so can reduce the production cost of load control device 100.
In addition,, in other preferred embodiment, also current-limiting circuit or mu balanced circuit can be set in load control device 100 further, and cause load control device 100 to be equivalent to a power supply unit.For example, in a preferred embodiment, load control device 100 also comprises a current-limiting circuit (not shown), and described current-limiting circuit is connected in series mutually with load 101.By this, load control device 100 is now by be equivalent to can be in order to provide the power supply unit of a steady current.Moreover in another preferred embodiment, load control device 100 also comprises a mu balanced circuit (not shown), and described mu balanced circuit and load 101 connected with each other.By this, load control device 100 is now by be equivalent to can be in order to provide the power supply unit of a burning voltage.
It is worth mentioning that, the load control device 100 in Fig. 1 embodiment is to utilize single electric capacity (the first electric capacity) go here and there switching also with load 101.Yet in practical application, load control device 100 also can utilize a plurality of electric capacity go here and there switching also with load 101.For instance, Fig. 2 is the schematic diagram according to the load control device of another embodiment of the present invention.Referring to Fig. 1 and Fig. 2, wherein two embodiment main difference parts are, the load control device 200 in Fig. 2 also comprises the second energy-storage units 210.Wherein, the second energy-storage units 210 has first end T31, the second end T32, the 3rd end T33 and the 4th end T34, and comprises the second capacitor C 2 (that is second energy-storage travelling wave tube) and diode D3～D5.
On being electrically connected, the first end T31 of the second energy-storage units 210 and the second end T32 are electrically connected respectively the first distribution L1 and the second distribution L2, and the second energy-storage units 210 is also serially connected between the second end T2 and the first energy-storage units 130 of load 101 by its 3rd end T33 and the 4th end T34.Further, the negative electrode of diode D3 is electrically connected the first end T31 of the second energy-storage units 210, and the anode of diode D3 is electrically connected the negative electrode of diode D4 and the first end of the second capacitor C 2.The anode of diode D4 is electrically connected the 3rd end T33 of the second energy-storage units 210.The second end of the second capacitor C 2 is electrically connected the 4th end T34 of the second energy-storage units 210 and the negative electrode of diode D5.The anode of diode D5 is electrically connected the second end T32 of the second energy-storage units 210.
In operation, when the MN1 conducting of N-type transistor and N-type transistor MN2 close, that is the operating current that transmits of the second distribution L2 is while being led to the first direction of current 211, and diode D3, D5 and D1 cannot conductings, and diode D4 and D2 are by conducting.By this, load 101, the second capacitor C 2 and the first capacitor C 1 will be connected between the first distribution L1 and the second distribution L2, and then the second capacitor C 2 and the first capacitor C 1 are charged.In addition, when N-type transistor MN1 closes and during N-type transistor MN2 conducting, that is the operating current transmitting as the second distribution L2 is while being led to the second direction of current 212, and diode D3, D5 and D1 be conducting, and diode D4 and D2 cannot conductings.By this, load 101, the second capacitor C 2 and the first capacitor C 1 will be connected in parallel between the first distribution L1 and the second distribution L2, and then cause the second capacitor C 2 and 1 pair of load 101 of the first capacitor C to be discharged.
In other words, the switching that the second energy-storage units 210 is understood in response to the direction of current of operating current, and cause the second capacitor C 2 to be connected in parallel between the first distribution L1 and the second distribution L2 or be connected between the second end T2 and the first capacitor C 1 of load 101.By this, load control device 200 can utilize 2 electric capacity (the first electric capacity and the second electric capacity) go here and there switching also with load 101.In addition, in other embodiments, also can be by increasing the number of the second energy-storage units 210, and cause load control device 200 to utilize 3 above electric capacity to come go here and there switching also with load 101.
For instance, Fig. 3 is the schematic diagram according to the load control device of another embodiment of the present invention.Referring to Fig. 2 and Fig. 3, wherein two embodiment main difference parts are, the load control device 300 in Fig. 3 comprises a plurality of the second energy-storage units, for example: second energy-storage units 210_1～210_2.Wherein, Fig. 3 has identical circuit structure with the second energy-storage units 210,210_1～210_2 in Fig. 2, therefore with the element in identical symbology the second energy-storage units 210,210_1～210_2.In addition, on being electrically connected, described a plurality of second energy-storage units 210_1～210_2 is electrically connected the first distribution L1 and the second distribution L2 by its first end T31 and the second end T32 separately, and described a plurality of second energy-storage units 210_1～210_2 is serially connected between the second end T2 and the first energy-storage units 130 of load 101 step by step by its 3rd end T33 and the 4th end T34 separately.
In operation, when the MN1 conducting of N-type transistor and N-type transistor MN2 close, that is the operating current transmitting as the second distribution L2 is while being led to the first direction of current 211, a plurality of the second capacitor C 2 in described a plurality of second energy-storage units 210_1～210_2 will be serially connected between the second end T2 and the first capacitor C 1 of load 101, and then cause load 101, a plurality of the second capacitor C 2 and the first capacitor C 1 to be connected between the first distribution L1 and the second distribution L2.
In addition, when N-type transistor MN1 closes and during N-type transistor MN2 conducting, that is the operating current transmitting as the second distribution L2 is while being led to the second direction of current 212, a plurality of the second capacitor C 2 in described a plurality of second energy-storage units 210_1～210_2 are all connected in parallel between the first distribution L1 and the second distribution L, and load now 101 and the first capacitor C 1 are to be also connected in parallel between the first distribution L1 and the second distribution L2.Therefore, described a plurality of the second capacitor C 2 and the first capacitor C 1 will be discharged to load 101.Thus, load control device 300 can utilize a plurality of electric capacity go here and there switching also with load 101.In addition,, in above-mentioned start, load control device 300 is once a plurality of the second capacitor C 2 to be charged.Yet in another preferred embodiment, load control device 300 also can, by the switching of a plurality of switches, periodically charge to described a plurality of the second capacitor C 2.
For instance, as shown in Figure 3, in another preferred embodiment, load control device 300 also can comprise a plurality of interrupteur SW 31～SW33 and second controller 310.Wherein, interrupteur SW 31～SW33 is connected in series mutually.In addition, corresponding second energy-storage units of each switch, and connected with each other with corresponding the second energy-storage units.For example, corresponding the second energy-storage units 210_1 of interrupteur SW 31, so the 3rd end T33 of interrupteur SW 31 two ends and the second energy-storage units 210_1 and the 4th end T34 connected with each other.
In operation, second controller 310 also can detect the level of power supply signal VS, and opens one by one (turn on) or close (turn off) interrupteur SW 31～SW33 according to testing result.By this, during rising gradually at power supply signal VS in, when the level of power supply signal VS is greater than predeterminated voltage, the first controller 110 can first all be serially connected load 101, described a plurality of the second capacitor C 2 and the first capacitor C 1 by switch unit 120.Yet because interrupteur SW 31～SW33 is now all the state that is in conducting, the electric current of the load 101 of therefore flowing through will can not be directed to the second capacitor C 2 of serial connection, but directly the interrupteur SW 31～SW33 by conducting is sent to the first capacitor C 1.Therefore, load control device 300 now cannot charge to any one the second capacitor C 2.
Then, at power supply signal VS, from predeterminated voltage, rise to gradually crest voltage during in, second controller 310 is closing switch SW31～SW33 one by one.Thus, along with closing of interrupteur SW 31, the electric current of the load 101 of flowing through can be directed to the second capacitor C 2 in the second energy-storage units 210_1, and then the second single capacitor C 2 is charged.Similarly, along with closing of interrupteur SW 31 and SW32, the electric current of the load 101 of flowing through can be directed to the second capacitor C 2 of two serial connections in second energy-storage units 210_1～210_2, and then the second capacitor C 2 of two serial connections is charged.By that analogy, at power supply signal VS, from predeterminated voltage, rise to gradually crest voltage during in, original interrupteur SW 31～SW33 that is all in conducting state will be switched to the state of not conducting one by one, and then causes load control device 300 periodically to described a plurality of the second capacitor C 2, to charge.
In addition, at power supply signal VS, from crest voltage, drop to predeterminated voltage during in, second controller 310 is opening switch SW31～SW33 one by one.For example, at the beginning, near the crest voltage of power supply signal VS, interrupteur SW 31～SW33 has been switched to the state of not conducting all.After power supply signal VS starts to decline, the first opening switch SW33 of second controller 310 meeting, and then sequentially open remaining interrupteur SW 31～SW32.By this, along with the decline of power supply signal VS, the charging number of the second capacitor C 2 also will reduce seriatim.In addition,, when power supply signal VS drops near predeterminated voltage, second controller 310 is by actuating switch SW31～SW33 totally.Afterwards, along with the level of power supply signal VS is less than predeterminated voltage, the first controller 110 can be by switch unit 120, load 101, described a plurality of the second capacitor C 2 and the first capacitor C 1 are all attempted by between the first distribution L1 and the second distribution L2, and then cause described a plurality of the second capacitor C 2 and 1 pair of load 101 of the first capacitor C to be discharged.
Although it should be noted that Fig. 1 to Fig. 3 embodiment has enumerated the enforcement kenel of switch unit 120, the first energy-storage units 130 and the second energy-storage units 210,210_1～210_2, it is not in order to limit the present invention.For instance, with regard to the switch unit 120 in Fig. 1 to Fig. 3, switch unit 120 is mainly for example, to be combined by two transistor (: N-type transistor MN1 and MN2).In addition,, in operation, switch unit 120 is to utilize control signal CT to control one of them transistor (N-type transistor MN1), and then causes the one conducting of two transistor.Yet on circuit is realized, the two transistor in switch unit 120 also can be replaced as two P transistor npn npns, a P transistor npn npn and a N-type transistor or a N-type transistor AND gate one P transistor npn npn.
In order to cause this area to have, conventionally know that the knowledgeable can more understand the present invention, below will do further description for above-mentioned three kinds of different enforcement kenels.For instance, Fig. 4 A and Fig. 4 B are the schematic diagram according to the load control device of another embodiment of the present invention, and wherein the two transistor in switch unit 120 is comprised of two P transistor npn npn MP1 and MP2.
Referring to Fig. 1 and Fig. 4 A, when two N-type transistor MN1 in Fig. 1 and MN2 are replaced as two P transistor npn npn MP1 and MP2, still can utilize two transistor MP1 and MP2, a resistance R 1 and a Zener diode ZD1 to form switch unit 120, but must change accordingly the bias voltage mode of each member in switch unit 120.Therefore, the load control device 401 in Fig. 4 A will be similar to 100 reverse grafts of the load control device in Fig. 1 between power supply signal VS and earth terminal.In other words, with regard to the load control device 100 in Fig. 1, the voltage level of the first distribution L1 will be greater than the voltage level that is positioned at the second distribution L2, and the voltage level of load control device 401, the first distribution L1 in Fig. 4 A is less than to the voltage level that is positioned at the second distribution L2.
Moreover, with regard to the switch unit 120 in Fig. 4 A and Fig. 1, both are by resemblance, and R1 resistance is connected in series mutually with transistor (MP1 or MN1), and transistor (MP2 or MN2), Zener diode ZD1 are connected in series mutually with transistor (MP1 or MN1).In addition,, with regard to the switch unit 120 in Fig. 4 A, the first end of resistance R 1 is electrically connected to earth terminal and the first distribution L1.The first end of P transistor npn npn MP2 (for example: the second end T2 that drain) is electrically connected load 101, the control end of P transistor npn npn MP2 (for example: gate) be electrically connected the second end of resistance R 1 and the anode of Zener diode ZD1, and the second end of P transistor npn npn MP2 (for example: the negative electrode and the second distribution L2 that source electrode) are electrically connected Zener diode ZD1.The first end of P transistor npn npn MP1 (for example: the anode that drain) is electrically connected Zener diode ZD1, the control end of P transistor npn npn MP1 (for example: the second end of source electrode) reception control signal CT, and P transistor npn npn MP1 (for example: source electrode) receive power supply signal VS.
In addition, the first energy-storage units 130 in synthesizing map 4A and Fig. 1, diode D1 and the first capacitor C 1 are to be serially connected between the first distribution L1 and the second distribution L2, and diode D2 and the first capacitor C 1 are to be serially connected between the second end T2 and the second distribution L2 of load 101.Moreover when the voltage level of the first distribution L1 is less than the voltage level that is positioned at the second distribution L2, the connected mode of the diode D1 in the first energy-storage units 130, diode D2 and the first capacitor C 1 will be as shown in Figure 4 A.That is when the voltage level of the first distribution L1 is less than the voltage level that is positioned at the second distribution L2, the anode of diode D1 is electrically connected the first distribution L1, and the negative electrode of diode D1 is electrically connected two distribution L2 by the first capacitor C 1.The negative electrode of diode D2 is electrically connected the second end of load 101, and the anode of diode D2 is electrically connected the negative electrode of diode D1.
In operation, with Fig. 1 embodiment similarly, when the MP1 conducting of P transistor npn npn and P transistor npn npn MP2 close, that is the operating current transmitting as the second distribution L2 is while being led to the first direction of current 211, diode D1 cannot conducting, and diode D2 is by conducting.By this, load 101 and the first capacitor C 1 will be connected between the first distribution L1 and the second distribution L2.In addition, when P transistor npn npn MP1 closes and during P transistor npn npn MP2 conducting, that is the operating current transmitting as the second distribution L2 is while being led to the second direction of current 212, and diode D1 is by conducting, and diode D2 cannot conducting.By this, load 101 and the first capacitor C 1 will be connected in parallel between the first distribution L1 and the second distribution L2.
In addition, implement similarly, one or more the second energy-storage units to be additionally set in the load control device 401 of Fig. 4 A with Fig. 2, Fig. 3, to cause load control device 401 can utilize 2 above electric capacity to come go here and there switching also with load 101.For instance, with the load control device 401 of Fig. 4 A in comparison, the load control device 402 in Fig. 4 B also comprises a plurality of the second energy-storage units, for example: 210_1～210_2.
Second energy-storage units 210_1～210_2 in synthesizing map 4B and Fig. 3, diode D3 and diode D4 are serially connected between the 3rd end of the first distribution L1 and the second energy-storage units, and diode D3 and the second capacitor C 2 are serially connected between the 4th end of the first distribution L1 and the second energy-storage units, and diode D5 is serially connected between the 4th end and the second end of the second energy-storage units.Moreover when the voltage level of the first distribution L1 is less than the voltage level that is positioned at the second distribution L2, in second energy-storage units 210_1～210_2, the connected mode of diode D3～D5 and the second capacitor C 2 will be as shown in Figure 4 B.
That is, for second energy-storage units 210_1～210_2, as shown in Figure 4 B, when the voltage level of the first distribution L1 is less than the voltage level that is positioned at the second distribution L2, the anode of diode D3 is electrically connected the first end of the second energy-storage units, and the negative electrode of diode D3 is electrically connected the anode of diode D4 and the second end of the second capacitor C 2.The negative electrode of diode D4 is electrically connected the 3rd end of the second energy-storage units.The first end of the second capacitor C 2 is electrically connected the 4th end of the second energy-storage units and the anode of diode D5.The negative electrode of diode D5 is electrically connected the second end of the second energy-storage units.
Continue referring to Fig. 4 B.Operation on, with Fig. 3 embodiment similarly, when the level of power supply signal VS is greater than predeterminated voltage, the first controller 110 can first cause load 101, described a plurality of the second capacitor C 2 and the first capacitor C 1 to be all serially connected.In addition, at power supply signal VS, from predeterminated voltage, rise to gradually crest voltage during in, second controller 310 is closing switch SW31～SW33 one by one.In addition, at power supply signal VS, from crest voltage, drop to predeterminated voltage during in, second controller 310 is opening switch SW31～SW33 one by one.By this, along with the switching one by one of interrupteur SW 31～SW33, load control device 401 can periodically charge to described a plurality of the second capacitor C 2.Afterwards, when the level of power supply signal VS is less than predeterminated voltage, the first controller 110 can be by switch unit 120, load 101, described a plurality of the second capacitor C 2 and the first capacitor C 1 are all attempted by between the first distribution L1 and the second distribution L2, and then cause described a plurality of the second capacitor C 2 and 1 pair of load 101 of the first capacitor C to be discharged.
Fig. 5 A and Fig. 5 B are that wherein the two transistor in switch unit 120 is comprised of a P transistor npn npn MP3 and a N-type transistor MN3 according to the schematic diagram of the load control device of an embodiment more of the present invention.In addition, switch unit 120 is now to be combined by two transistor MP3, MN3 and 3 resistance R 3～R4.
On being electrically connected, as shown in Fig. 5 A and Fig. 5 B, the second end of P transistor npn npn MP3 (for example: source electrode) receive power supply signal VS, the control end of P transistor npn npn MP3 (for example: the first end of gate) reception control signal CT, and P transistor npn npn MP3 (for example: the first end that drain) is electrically connected the first distribution L1 and resistance R 2.The first end of N-type transistor MN3 (for example: the second end T2 that drain) is electrically connected load 101, the control end of N-type transistor MN3 (for example: gate) be electrically connected the second end of resistance R 2 and the first end of resistance R 3, and the second end of N-type transistor MN3 (for example: the first end that source electrode) is electrically connected the second distribution L2 and resistance R 4.Resistance R 3 is all electrically connected to earth terminal with the second end of resistance R.In addition, because the voltage level of the first distribution L1 is now greater than the voltage level that is positioned at the second distribution L2, therefore in the first energy-storage units 130 of Fig. 5 A, diode D1～D2 is identical with the first energy-storage units 130 of Fig. 1-3 with the connected mode of the first capacitor C 1, and in second energy-storage units 210_1～210_2 of Fig. 5 B, diode D3～D5 is identical with second energy-storage units 210_1～210_2 of Fig. 3 with the connected mode of the second capacitor C 2.
With regard to the load control device 501 of Fig. 5 A embodiment, in operation, one of them that switch unit 120 is understood according to control signal CT conducting P transistor npn npn MP3 and N-type transistor MN3.In addition, when the MP3 conducting of P transistor npn npn and N-type transistor MN3 close, the operating current that the second distribution L2 transmits will be led to the first direction of current 211, and the diode D2 in the first energy-storage units 130 is conducting, and then cause load 101 and the first capacitor C 1 to be connected between the first distribution L1 and the second distribution L2.Moreover, when P transistor npn npn MP3 closes and during N-type transistor MN3 conducting, the operating current that the second distribution L2 transmits will be led to the second direction of current 212, and the diode D1 in the first energy-storage units 130 is conducting, and then cause load 101 and the first capacitor C 1 to be connected in parallel between the first distribution L1 and the second distribution L2.In addition, the operation mechanism of the load control device 502 of Fig. 5 B is similar to Fig. 3, Fig. 4 B embodiment, therefore do not repeat them here.
Fig. 6 A and Fig. 6 B are the schematic diagram according to the load control device of another embodiment of the present invention, and wherein the two transistor in switch unit 120 is comprised of a N-type transistor MN4 and a P transistor npn npn MP4.In addition, with Fig. 5 A～5B embodiment similarly, switch unit 120 is now to be combined by two transistor MN4, MP4 and 3 resistance R 3～R4.
On being electrically connected, the load control device 601 in Fig. 6 A will be similar to 501 reverse grafts of the load control device in Fig. 5 A between power supply signal VS and earth terminal.Therefore, the switch unit 120 in Fig. 6 A and Fig. 5 A just, both are by resemblance, resistance R 2, resistance R 3 are connected in series mutually with transistor (MN4 or MP3), and resistance R 4 is connected in series mutually with transistor (MP4 or MN3).In addition, with regard to the switch unit 120 in Fig. 6 A, the second end of N-type transistor MN4 (for example: source electrode) be electrically connected to earth terminal, the control end of N-type transistor MN4 (for example: the first end of gate) reception control signal CT, and N-type transistor MN4 (for example: the first end that drain) is electrically connected the first distribution L1 and resistance R 2.
In addition, the first end of P transistor npn npn MP4 (for example: the second end T2 that drain) is electrically connected load 101, the control end of P transistor npn npn MP4 (for example: gate) be electrically connected the second end of resistance R 2 and the first end of resistance R 3, and the second end of P transistor npn npn MP4 (for example: the first end that source electrode) is electrically connected the second distribution L2 and resistance R 4.The second end of resistance R 3 and resistance R 4 is all in order to receive power supply signal VS.Moreover, because the voltage level of the first distribution L1 is now less than the voltage level that is positioned at the second distribution L2, therefore in the first energy-storage units 130 of Fig. 6 A, diode D1～D2 is identical with the first energy-storage units 130 of Fig. 4 A with the connected mode of the first capacitor C 1, and in second energy-storage units 210_1～210_2 of Fig. 6 B, diode D3～D5 is identical with second energy-storage units 210_1～210_2 of Fig. 4 B with the connected mode of the second capacitor C 2.
With regard to the load control device 601 of Fig. 6 A embodiment, in operation, one of them that switch unit 120 is understood according to control signal CT conducting N-type transistor MN4 and P transistor npn npn MP4.In addition, when the MN4 conducting of N-type transistor and P transistor npn npn MP4 close, the operating current that the second distribution L2 transmits will be led to the first direction of current 211, and the diode D2 in the first energy-storage units 130 is conducting, and then cause load 101 and the first capacitor C 1 to be connected between the first distribution L1 and the second distribution L2.Moreover, when N-type transistor MN4 closes and during P transistor npn npn MP43 conducting, the operating current that the second distribution L2 transmits will be led to the second direction of current 212, and the diode D1 in the first energy-storage units 130 is conducting, and then cause load 101 and the first capacitor C 1 to be connected in parallel between the first distribution L1 and the second distribution L2.In addition, the operation mechanism of the load control device 602 of Fig. 6 B and Fig. 3, Fig. 4 B, Fig. 5 B embodiment are similar, therefore do not repeat them here.
Separately it should be noted that, although transistor MN1～MN4, MP1～MP4 in the cited switch unit of Fig. 1 to Fig. 6 embodiment are all used MOS (metal-oxide-semiconductor) transistor (Metal Oxide Semiconductor transistor) to realize, it is not in order to limit the present invention.For instance, one of them or all N-type transistors all can replace it by NPN bipolar transistor (bipolar transistor), or one of them or all P transistor npn npns all can replace it by PNP bipolar transistor.
Although another it should be noted that Fig. 1 to Fig. 6 embodiment all realizes the first energy-storage travelling wave tube and the second energy-storage travelling wave tube with capacitor C 1, C2, it is not in order to limit the present invention.For instance, one of them or all capacitor C 1, C2 all can replace it by battery.
Another it should be noted that the resistance R 1～R4 in the cited switch unit of Fig. 1 to Fig. 6 embodiment all can replace it with a current source respectively.For instance, the resistance R 1 in Fig. 1-3,4A, 4B can replace it by one first current source.Now, the switch unit 120 in Fig. 1-3,4A, 4B will comprise two transistor (for example: MN1 and MN2 or MP1 and MP2), the first current source and Zener diode ZD1.Wherein, as shown in Fig. 1-3,4A, 4B, when resistance R 1 is replaced by the first current source, the control end reception control signal CT of the first transistor in two transistor (for example: MN1 or MP1), and the first transistor is connected in series mutually with the first current source.In addition, the first end of the transistor seconds in two transistor (for example: MN2 or MP2) is electrically connected the second end T2 of load 101, for example, and the control end of transistor seconds (: MN2 or MP2) is electrically connected the first current source, and Zener diode ZD1 is for example electrically connected at, between second end and control end of transistor seconds (: MN2 or MP2).
Similarly, the resistance R 2～R4 in Fig. 5 A, 5B, 6A, 6B can replace it by one second current source to the 4th current source.Now, the switch unit 120 in Fig. 5 A, 5B, 6A, 6B will comprise two transistor (for example: MP3 and MN3 or MN4 and MP4) and the second current source to the four current sources.Wherein, as shown in Fig. 5 A, 5B, 6A, 6B, the control end reception control signal CT of the first transistor in two transistor (for example: MP3 or MN4), and the first transistor (for example: MP3 or MN4), the second current source are connected in series mutually with the 3rd current source.In addition, the first end of the transistor seconds in two transistor (for example: MN3 or MP4) is electrically connected the second end T2 of load 101, the control end of transistor seconds (for example: MN3 or MP4) is electrically connected the second current source, and the second end of transistor seconds (for example: MN3 or MP4) is electrically connected the 4th current source.
In sum, the present invention carrys out the connection status of switch load and energy-storage travelling wave tube (for example: electric capacity, battery) by switch unit, and then causes load or and to connect at least one energy-storage travelling wave tube along with the height serial connection of the level of power supply signal.In addition, by string the switching of load and energy-storage travelling wave tube, load control device can be recovered to the energy that load does not use further, and then reduce the power consumption of load control device.In addition, by energy-storage travelling wave tube, to the discharging and recharging of load, load control device will just can provide a metastable voltage to load without power supply changeover device is additionally set, and then reduce the production cost of load control device.
Finally it should be noted that: each embodiment, only in order to technical scheme of the present invention to be described, is not intended to limit above; Although the present invention is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or some or all of technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (20)
1. a load control device, is characterized in that, comprising:
One first controller, detects the level of a power supply signal, and produces a control signal according to testing result;
One switch unit, by one first distribution, be electrically connected to the first end of a load, and whether this switch unit determines the second end to this load by one second distribution conducting according to this control signal, and switch according to this direction of current of the operating current that this second distribution transmits; And
One first energy-storage units, comprises one first energy-storage travelling wave tube, and in response to the switching of the direction of current of this operating current, and causes this first energy-storage travelling wave tube in parallel with this load or be connected between this first distribution and this second distribution.
2. load control device according to claim 1, it is characterized in that, this switch unit comprises a first transistor and a transistor seconds, and this switch unit is controlled this first transistor according to this control signal, and one of them of this first transistor of conducting and this transistor seconds, and this second distribution can be along with the conducting of this transistor seconds conducting to the second end of this load.
3. load control device according to claim 2, it is characterized in that, this the first transistor and this transistor seconds are MOS (metal-oxide-semiconductor) transistor or bipolar transistor, or this first transistor and this transistor seconds are consisted of a MOS (metal-oxide-semiconductor) transistor and a bipolar transistor.
4. load control device according to claim 2, it is characterized in that, this switch unit also comprises one first resistance and a Zener diode, and this first resistance is connected in series mutually with this first transistor, and this transistor seconds, this Zener diode are connected in series mutually with this first transistor.
5. load control device according to claim 4, it is characterized in that, this the first transistor and this transistor seconds are respectively one first N-type transistor AND gate one second N-type transistor, and the first end of this first resistance receives this power supply signal and is electrically connected this first distribution, the transistorized first end of this second N-type is electrically connected the second end of this load, the transistorized control end of this second N-type is electrically connected the second end of this first resistance and the negative electrode of this Zener diode, transistorized the second end of this second N-type is electrically connected anode and this second distribution of this Zener diode, the transistorized first end of this first N-type is electrically connected the negative electrode of this Zener diode, the transistorized control end of this first N-type receives this control signal, transistorized the second end of this first N-type is electrically connected to this earth terminal.
6. load control device according to claim 4, it is characterized in that, this the first transistor and this transistor seconds are respectively one the one P transistor npn npn and one the 2nd P transistor npn npn, and the first end of this first resistance is electrically connected this earth terminal and this first distribution, the first end of the 2nd P transistor npn npn is electrically connected the second end of this load, the control end of the 2nd P transistor npn npn is electrically connected the second end of this first resistance and the anode of this Zener diode, the second end of the 2nd P transistor npn npn is electrically connected negative electrode and this second distribution of this Zener diode, the first end of the one P transistor npn npn is electrically connected the anode of this Zener diode, the control end of the one P transistor npn npn receives this control signal, the second termination of the one P transistor npn npn is received this power supply signal.
7. load control device according to claim 2, it is characterized in that, this switch unit also comprises one second to 1 the 4th resistance, and this second resistance, the 3rd resistance is connected in series mutually with this first transistor, and the 4th resistance is connected in series mutually with this transistor seconds.
8. load control device according to claim 7, it is characterized in that, this the first transistor and this transistor seconds are respectively one the 3rd P transistor npn npn and one the 3rd N-type transistor, and the first end of the 3rd P transistor npn npn is electrically connected the first end of this first distribution and this second resistance, the second termination of the 3rd P transistor npn npn is received this power supply signal, the control end of the 3rd P transistor npn npn receives this control signal, the transistorized first end of the 3rd N-type is electrically connected the second end of this load, the transistorized control end of the 3rd N-type is electrically connected the second end of this second resistance and the first end of the 3rd resistance, transistorized the second end of the 3rd N-type is electrically connected the first end of this second distribution and the 4th resistance, the second end of the 3rd resistance and the 4th resistance is all electrically connected this earth terminal.
9. load control device according to claim 7, it is characterized in that, this the first transistor and this transistor seconds are respectively one the 4th N-type transistor AND gate 1 the 4th P transistor npn npn, wherein the transistorized first end of the 4th N-type is electrically connected the first end of this first distribution and this second resistance, transistorized the second end of the 4th N-type is electrically connected to this earth terminal, the transistorized control end of the 4th N-type receives this control signal, the first end of the 4th P transistor npn npn is electrically connected the second end of this load, the control end of the 4th P transistor npn npn is electrically connected the second end of this second resistance and the first end of the 3rd resistance, the second end of the 4th P transistor npn npn is electrically connected the first end of this second distribution and the 4th resistance, the second end of the 3rd resistance and the 4th resistance is all in order to receive this power supply signal.
10. load control device according to claim 2, it is characterized in that, this the first transistor and this transistor seconds are N-type transistor or P transistor npn npn, and this switch unit also comprises one first current source and a Zener diode, wherein the control end of this first transistor receives this control signal, and this first transistor is connected in series mutually with this first current source, the first end of this transistor seconds is electrically connected the second end of this load, the control end of this transistor seconds is electrically connected this first current source, this Zener diode is electrically connected between second end and control end of this transistor seconds.
11. load control devices according to claim 2, it is characterized in that, this the first transistor and this transistor seconds are consisted of a N-type transistor AND gate one P transistor npn npn, and this switch unit also comprises one second to 1 the 4th current source, wherein the control end of this first transistor receives this control signal, and this first transistor, this second current source is connected in series mutually with the 3rd current source, the first end of this transistor seconds is electrically connected the second end of this load, the control end of this transistor seconds is electrically connected this second current source, the second end of this transistor seconds is electrically connected the 4th current source.
12. load control devices according to claim 1, it is characterized in that, this first energy-storage units also comprises one first diode and one second diode, this first diode and this first energy-storage travelling wave tube are serially connected between this first distribution and this second distribution, this second diode and this first energy-storage travelling wave tube are serially connected between second end and this second distribution of this load, wherein one of them of this first energy-storage units this first diode of conducting and this second diode in response to the switching of the direction of current of this operating current.
13. load control devices according to claim 12, it is characterized in that, the voltage level that is positioned at this first distribution is greater than the voltage level that is positioned at this second distribution, and the negative electrode of this first diode is electrically connected this first distribution, the anode of this first diode is electrically connected to this second distribution by this first energy-storage travelling wave tube, the anode of this second diode is electrically connected the second end of this load, and the negative electrode of this second diode is electrically connected the anode of this first diode.
14. load control devices according to claim 12, it is characterized in that, the voltage level that is positioned at this first distribution is less than the voltage level that is positioned at this second distribution, and the anode of this first diode is electrically connected this first distribution, the negative electrode of this first diode is electrically connected this two distribution by this first energy-storage travelling wave tube, the negative electrode of this second diode is electrically connected the second end of this load, and the anode of this second diode is electrically connected the negative electrode of this first diode.
15. load control devices according to claim 1, is characterized in that, also comprise:
N the second energy-storage units, comprise separately one second energy-storage travelling wave tube, and there is separately one first to 1 the 4th end, first end and second end of wherein said N the second energy-storage units are electrically connected respectively this first distribution and this second distribution, described N the second energy-storage units is also serially connected between second end and this first energy-storage units of this load by its 3rd end and the 4th end, and individual the second energy-storage units of described N is in response to the switching of the direction of current of this operating current, and cause described N the second energy-storage travelling wave tube be connected in parallel between this first distribution and this second distribution or be connected between second end and this first energy-storage travelling wave tube of this load, N is positive integer.
16. load control devices according to claim 15, is characterized in that, also comprise:
N switch, wherein the first end of i switch is electrically connected to the 3rd end of i the second energy-storage units, and the second end of i switch is electrically connected to the 4th end of individual the second energy-storage units of i, and wherein i is integer and 1≤i≤N; And
One second controller, detects the level of this power supply signal, and opens one by one or close a described N switch according to testing result.
17. load control devices according to claim 15, it is characterized in that, i the second energy-storage units also comprises one the 3rd to 1 the 5th diode, and the 3rd diode and the 4th diode are serially connected between this first distribution and the 3rd end of i the second energy-storage units, and the 3rd diode and this second energy-storage travelling wave tube are serially connected between this first distribution and the 4th end of i the second energy-storage units, and the 5th diode is serially connected between the 4th end and the second end of i the second energy-storage units, and i is integer and 1≤i≤N.
18. load control devices according to claim 17, it is characterized in that, the voltage level that is positioned at this first distribution is greater than the voltage level that is positioned at this second distribution, and the negative electrode of the 3rd diode is electrically connected the first end of i the second energy-storage units, the anode of the 3rd diode is electrically connected the negative electrode of the 4th diode and the first end of this second energy-storage travelling wave tube, the anode of the 4th diode is electrically connected the 3rd end of i the second energy-storage units, the second end of this second energy-storage travelling wave tube is electrically connected the 4th end of i the second energy-storage units and the negative electrode of the 5th diode, the anode of the 5th diode is electrically connected the second end of i the second energy-storage units.
19. load control devices according to claim 17, it is characterized in that, the voltage level that is positioned at this first distribution is less than the voltage level that is positioned at this second distribution, and the anode of the 3rd diode is electrically connected the first end of i the second energy-storage units, the negative electrode of the 3rd diode is electrically connected the anode of the 4th diode and the second end of this second energy-storage travelling wave tube, the negative electrode of the 4th diode is electrically connected the 3rd end of i the second energy-storage units, the first end of this second energy-storage travelling wave tube is electrically connected the 4th end of i the second energy-storage units and the anode of the 5th diode, the negative electrode of the 5th diode is electrically connected the second end of i the second energy-storage units.
20. load control devices according to claim 15, is characterized in that, this first energy-storage travelling wave tube and this second energy-storage travelling wave tube are consisted of an electric capacity or a battery respectively.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101123251 | 2012-06-28 | ||
| TW101123251A TWI493832B (en) | 2012-06-28 | 2012-06-28 | Load control device |
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| CN103513587A true CN103513587A (en) | 2014-01-15 |
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| CN201210510507.2A Pending CN103513587A (en) | 2012-06-28 | 2012-12-04 | Load control device |
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| TW (1) | TWI493832B (en) |
Cited By (1)
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|---|---|---|---|---|
| CN110071569A (en) * | 2018-01-22 | 2019-07-30 | 关隆股份有限公司 | Load control system and its control method |
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| CN2206516Y (en) * | 1994-05-04 | 1995-08-30 | 宣化区清远电器厂 | AC inductive load controller for thyristor |
| WO1996003792A1 (en) * | 1994-07-28 | 1996-02-08 | Southpower Limited | Device for energy load control |
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| TW201011514A (en) * | 2008-09-12 | 2010-03-16 | Lite On Technology Corp | Discharging control device for adjusting output current |
| JP5240774B2 (en) * | 2008-12-22 | 2013-07-17 | パナソニック株式会社 | Load control device |
| CN101702613B (en) * | 2009-11-14 | 2011-12-07 | 赵树林 | Low-voltage start circuit of field effect transistor voltage regulator |
| TWM429251U (en) * | 2011-12-02 | 2012-05-11 | Jui-Hung Chen | Alternating current direct current control device |
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| CN2206516Y (en) * | 1994-05-04 | 1995-08-30 | 宣化区清远电器厂 | AC inductive load controller for thyristor |
| WO1996003792A1 (en) * | 1994-07-28 | 1996-02-08 | Southpower Limited | Device for energy load control |
| US6031708A (en) * | 1996-04-25 | 2000-02-29 | Schneider Electric Sa | Inductive charge control device |
| US20100289474A1 (en) * | 2009-05-13 | 2010-11-18 | Ching-Chuan Kuo | Controllers for controlling power converters |
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| CN110071569A (en) * | 2018-01-22 | 2019-07-30 | 关隆股份有限公司 | Load control system and its control method |
| CN110071569B (en) * | 2018-01-22 | 2023-10-13 | 关隆股份有限公司 | Load control system and control method thereof |
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| Publication number | Publication date |
|---|---|
| TW201401718A (en) | 2014-01-01 |
| TWI493832B (en) | 2015-07-21 |
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