CN103582232A - Driving power device of ballast type LED lamp - Google Patents
Driving power device of ballast type LED lamp Download PDFInfo
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- CN103582232A CN103582232A CN201210348080.0A CN201210348080A CN103582232A CN 103582232 A CN103582232 A CN 103582232A CN 201210348080 A CN201210348080 A CN 201210348080A CN 103582232 A CN103582232 A CN 103582232A
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Abstract
The invention discloses a driving power device of a ballast type LED lamp. The driving power device comprises a capacitor (C) and a low-consumption inductive ballast (L). The driving power device of the ballast type LED lamp is characterized in that the two ends (the L end and a node 1) of the capacitor (C) are at least connected with a series circuit which is composed of a routing capacitor (Ca) and a switch (Ka), the power input ends (the L end and the N end) of the driving power device of the ballast type LED lamp are further in parallel connection with a circuit device (DJ) which drives the state of the switch (Ka) to be converted when input voltages change. The driving power device of the ballast type LED lamp has the advantages that the purpose that a driving power source of the ballast type LED lamp is within a wide input voltage range (like 160V-250V) is achieved, the currents of the LED lamp are kept basically constant, and the driving power source of the ballast type LED lamp is made to be an ideal driving power source of the LED lamp.
Description
Technical field
The present invention relates to a kind of driving power of solid luminous lamp, more particularly, relate to a kind of drive electric power unit of ballast formula LED lamp.
Background technology
LED semiconductor lighting is the new industry that State Council accelerates cultivation and development strategy.In the recent period, the Department of Science and Technology has worked out < < semiconductor lighting development in science and technology " 12 " ad hoc planning > >, in the application technical research of the key task of ad hoc planning, efficient, low-cost, the highly reliable LED driving power of exploitation has been proposed.This has illustrated the importance of LED driving power in technology of semiconductor illumination application field.
LED driving power mainly contains alternating current 220V civil power supply load after commutation inversion is used at present, the rectifier bridge that the most frequently used rectifier system is comprised of 4 diodes is transformed to direct current by alternating current, after inversion, become again controlled direct current, supply with LED lamp.The shortcoming of this method is, the non-linear of DC transfer circuit forming due to diode and electric capacity can produce a large amount of current harmonics and reactive power, causes the pollution of electrical network.This harmonic pollution not only can make line voltage distort, but also can cause fault and the damage of power consumption equipment.Therefore, need to take very complicated means that the waveform of input current is approached sinusoidal wave.This complex process can exert an influence to the useful life of LED driving power naturally.LED is widely used with its environmental protection, luminous efficient feature, and especially aspect illumination, application is more and more extensive.With regard to current development, what everybody was concerned about the most is the life problems of lamp, and be that lamp user or factory are all seen now, the life-span of lamp is depended on driving power, more than 99% lamp failure is all because driving power causes, the life-span of LED reaches 50000h, so but with it the life-span of supporting driving power only for 10000h. LED lamp lighting apparatus can application one of key link be its driving power problem.The problem existing for prior art, Chinese patent application publication No. CN102523674A has proposed the brand new technical scheme of the driving power of ballast formula LED lamp, uses the driving power tool of ballast formula LED lamp to have the following advantages: 1, oneself power consumption is little, temperature rise is low, long service life.These features are above-mentioned patented technology advanced places compared with prior art, the little energy efficiency factor that can improve system of oneself power consumption in These characteristics; The low characteristic of temperature rise is particularly important for LED lamp, what well-known LED lamp was feared most is exactly temperature rise, if the temperature rise of LED lamp is very high, add high temperature rise driving power, the performance of lamp will sharply decline (prior art is all like this), uses the driving power of ballast formula LED lamp, and the temperature rise Δ t of the element Inductive ballast that it can generate heat can be controlled in 10 degree, the driving power of the LED lamp of this specific character, will improve the combination property of LED lamp greatly; Useful life, because the temperature rise of Inductive ballast is extremely low, useful life that so Inductive ballast has very long (foundation was IEC920 ballast working temperature and was related to chart useful life at least 50 years), capacitor in circuit is according to national GB/T 18504-2001 relevant regulations, and the life-span of its continuous operation is at least 10 years.
2, to meet requirement, the functional reliability of LED lamp completely high for superior performance.The driving power of ballast formula LED lamp has the characteristic of relatively constant electric current and dynamic voltage adjustment, and the function of dynamic voltage adjustment is that underload (as 1 LED lamp) and full load (if nominal load power is a plurality of LED lamps) LED lamp can work.And the driving power of the LED lamp of prior art is due to certain LED because the quality reason of self is damaged thereby form short circuit, its original voltage drop is just married again on other LED lamps, can make other LED lamps also will be because overvoltage damages.Because the element of the driving power rapid wear of ballast formula LED lamp of the present invention is few, the reliability of work will improve greatly.
3 harmonic contents are few.The driving power of ballast formula LED lamp is electric capacity and inductance series circuit, and electric capacity coordinates with inductance, makes the current waveform of circuit approach sine wave, and shape factor is in 1.5 left and right, so harmonic content is few, pollution-free to electrical network.
The technology that the rule of development of new things has been is all to produce by continuous perfect process, patent application of the present invention, be the driving power of the ballast formula LED lamp that is CN102523674A for prior art public announcement of a patent application number at input voltage during in wide variation (as 160V～250V), the deficiency that the electric current of drive circuit also can change proposes.
Summary of the invention
In view of the above-mentioned defect that prior art exists, the invention provides a kind of driving power that can adapt to the ballast formula LED lamp of wide voltage.
In order to achieve the above object, the present invention takes following technical scheme: the driving power of ballast formula LED lamp, comprise capacitor (C) and low-consumption inductance ballast (L), it is characterized in that: the two ends of said electric capacity (C) (L end and node 1 end) is at least connected to the series circuit of a routing capacitance (Ca) and switch (Ka) composition.
The power input of the drive electric power unit of said ballast formula LED lamp (L end, N end), goes back and is connected with the circuit arrangement (DJ) that driving switch when input voltage changes (Ka) state is changed.
Said switch (Ka) state switching circuit device (DJ) comprises the executive circuit of power supply circuits, sample circuit, drive signal circuit, drive circuit, state conversion.
The power supply circuits of said switch (Ka) state switching circuit device (DJ) comprising:
Capacitance decompression element (C1), resistance (R), rectifier cell (D1), (D2) voltage stabilizing element (W), filter element (C2), a termination power input (L) after described capacitance decompression unit (C1) is in parallel with resistance (R), the same rectifier cell of the other end (D1) negative pole is connected with (D2) anodal contact, (D1) positive pole connects power input (N) end, (D2) one end of the same voltage stabilizing element of negative pole (W) and the shunt circuit of filter element (C2) is connected, (W), (C2) (N) of another termination power input of shunt circuit end.
The sample circuit of said switch (Ka) state switching circuit device (DJ) comprising:
Unidirectional element (Da1), electric capacity (Ca1), resistance (Ra1), resistance (Ra2), resistance (Ra3), described unidirectional element (Da1), resistance (Ra1), resistance (Ra2), resistance (Ra3) the mutually rear one end of series connection are connected with (L) end of power supply input, the other end is connected with (N) end of power supply input, the negative pole of the same unidirectional element in one end (Da1) of electric capacity (Ca1) is connected with the tie point of resistance (Ra1), and the other end (Ca1) connects with (N) end of power supply input.
The drive signal circuit of said switch (Ka) state switching circuit device (DJ) comprising:
Integrated circuit (IC) chip (ICa) and electric capacity (Ca2), resistance (Ra4), the power input of described integrated circuit (IC) chip (ICa) connects the A point of described power supply circuits, high-triggering end is connected with the tie point of resistance (Ra1), resistance (Ra2), the center tap terminal of low triggering end connecting resistance (Ra3), output connecting resistance (Ra4), control end connects (N) end of power supply input by electric capacity (Ca2), common is connected with (N) end of power supply input.
The executive circuit of the drive circuit of said switch (Ka) state switching circuit device (DJ) and state conversion comprises:
Driving element transistor (GBa), state conversion executive component relay (Ja), unidirectional element (Da2), described transistor (GBa) base stage connecting resistance (Ra4), collector electrode is connected with the one end of relay (Ja), emitter is connected with (N) end of power supply input, the other end of relay (Ja) is connected with the A point of power supply circuits, and unidirectional element (Da2) is also connected in the two ends of relay (Ja).
The series circuit that said electric capacity (Cb) and switch (Kb) form is also connected in the series circuit that two ends (L end and node 1 end), electric capacity (Cc) and the switch (Kc) of electric capacity (C) form and the series circuit of two ends (L end and node 1 end), electric capacity (Cd) and switch (Kd) composition that is connected in electric capacity (C) be connected in the two ends (L holds and node 1 end) of electric capacity (C).
The power supply circuits two ends of said switch (Ka) state switching circuit device (DJ) (the N end of node A and power supply input) and be connected with the drive signal circuit of switch (Kb) and the executive circuit of drive circuit and state conversion, the executive circuit of the drive signal circuit of switch (Kc) and drive circuit and state conversion, the executive circuit of the drive signal circuit of switch (Kd) and drive circuit and state conversion.
Said switch (Ka) state switching circuit device (DJ) also comprises: the sample circuit of the sample circuit of driving switch (Kb) state conversion, the conversion of driving switch (Kc) state, the sample circuit of driving switch (Kd) state conversion.
The drive signal circuit of said switch (Kb) comprises circuit integrated circuit (IC) chip (ICb) and electric capacity (Cb2), resistance (Rb4), the power input of described integrated circuit (IC) chip (ICb) connects the A point of described power supply circuits, high-triggering end is connected with the tie point of resistance (Rb1), resistance (Rb2), the center tap terminal of low triggering end connecting resistance (Rb3), output connecting resistance (Rb4), control end connects (N) end of power supply input by electric capacity (Cb2), common is connected with (N) end of power supply input.
The executive circuit of the drive circuit of said switch (Kb) and state conversion comprises driving element transistor (GBb), state conversion executive component relay (Jb), unidirectional element (Db2), described transistor (GBb) base stage connecting resistance (Rb4), collector electrode is connected with the one end of relay (Jb), emitter is connected with (N) end of power supply input, the other end of relay (Jb) is connected with the A point of power supply circuits, and unidirectional element (Db2) is also connected in the two ends of relay (Jb).
The sample circuit of said driving switch (Kb) state conversion comprises unidirectional element (Db1), electric capacity (Cb1), resistance (Rb1), resistance (Rb2), resistance (Rb3), described unidirectional element (Db1), resistance (Rb1), resistance (Rb2), resistance (Rb3) the mutually rear one end of series connection is connected with (L) end of power supply input, the other end is connected with (N) end of power supply input, the negative pole of the same unidirectional element in one end (Db1) of electric capacity (Cb1) is connected with the tie point of resistance (Rb1), (Cb1) the other end connects with (N) end of power supply input.
The drive signal circuit of said switch (Kc) comprises circuit integrated circuit (IC) chip (ICc) and electric capacity (Cc2), resistance (Rc4), the power input of described integrated circuit (IC) chip (ICc) connects the A point of described power supply circuits, high-triggering end is connected with the tie point of resistance (Rc1), resistance (Rc2), the center tap terminal of low triggering end connecting resistance (Rc3), output connecting resistance (Rc4), control end connects (N) end of power supply input by electric capacity (Cc2), common is connected with (N) end of power supply input.
The executive circuit of the drive circuit of said switch (Kc) and state conversion comprises driving element transistor (GBc), state conversion executive component relay (Jc), unidirectional element (Dc2), described transistor (GBc) base stage connecting resistance (Rc4), collector electrode is connected with the one end of relay (Jc), emitter is connected with (N) end of power supply input, the other end of relay (Jc) is connected with the A point of power supply circuits, and unidirectional element (Dc2) is also connected in the two ends of relay (Jc);
The sample circuit of said driving switch (Kc) state conversion comprises unidirectional element (Dc1), electric capacity (Cc 1), resistance (Rc1), resistance (Rc2), resistance (Rc3), described unidirectional element (Dc1), resistance (Rc1), resistance (Rc2), resistance (Rc3) the mutually rear one end of series connection is connected with (L) end of power supply input, the other end is connected with (N) end of power supply input, the negative pole of the same unidirectional element in one end (Dc1) of electric capacity (Cc1) is connected with the tie point of resistance (Rc1), (Cc1) the other end connects with (N) end of power supply input,
The drive signal circuit of said switch (Kd) comprises circuit integrated circuit (IC) chip (ICd) and electric capacity (Cd2), resistance (Rd4), the power input of described integrated circuit (IC) chip (ICd) connects the A point of described power supply circuits, high-triggering end is connected with the tie point of resistance (Rd1), resistance (Rd2), the center tap terminal of low triggering end connecting resistance (Rd3), output connecting resistance (Rd4), control end connects (N) end of power supply input by electric capacity (Cd2), common is connected with (N) end of power supply input.
The executive circuit of the drive circuit of said switch (Kd) and state conversion comprises driving element transistor (GBd), state conversion executive component relay (Jd), unidirectional element (Dd2), described transistor (GBd) base stage connecting resistance (Rd4), collector electrode is connected with the one end of relay (Jd), emitter is connected with (N) end of power supply input, the other end of relay (Jd) is connected with the A point of power supply circuits, and unidirectional element (Dd2) is also connected in the two ends of relay (Jd).
The sample circuit of said driving switch (Kd) state conversion comprises unidirectional element (Dd1), electric capacity (Cd1), resistance (Rd1), resistance (Rd2), resistance (Rd3), described unidirectional element (Dd1), resistance (Rd1), resistance (Rd2), resistance (Rd3) the mutually rear one end of series connection is connected with (L) end of power supply input, the other end is connected with (N) end of power supply input, the negative pole of the same unidirectional element in one end (Dd1) of electric capacity (Cd1) is connected with the tie point of resistance (Rd1), (Cd1) the other end connects with (N) end of power supply input.
The invention has the advantages that, he has realized the driving power of ballast formula LED lamp within the variation of very wide input voltage range (as 160V～250V), the electric current substantially constant that keeps LED lamp, the curent change that can realize as required lamp is less than ± and 5% to ± 3%.This advantage adds the technical characterictic of dynamic voltage adjustment (can think the constant-current source irrelevant with load voltage) of the driving power of ballast formula LED lamp, and high efficiency (efficiency can reach 95% to 97%) technical characterictic, particularly dynamic voltage adjustment technical characterictic of the driving power of ballast formula LED lamp are the main advantages that existing LED Driving technique cannot realize.These technical characterictics become the driving power that makes ballast formula LED lamp the developing direction of following illuminating LED lamp driving power.
Accompanying drawing explanation
Fig. 1, be the circuit structure schematic diagram of the drive electric power unit of ballast formula LED lamp of the present invention.
Fig. 2, be the part circuit structure schematic diagram of the drive electric power unit of ballast formula LED lamp of the present invention.
Fig. 3, be the local circuit structure principle chart of the drive electric power unit of ballast formula LED lamp of the present invention.
Fig. 4, be the local circuit structure principle chart of the drive electric power unit of another kind of ballast formula LED lamp of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is done further carefully to state.
Referring to Fig. 1, the circuit structure schematic diagram of the driving power of ballast formula LED lamp of the present invention, the two ends of shown electric capacity (C) (L end and node 1) are connected to the series circuit of a routing capacitance (Ca) and switch (Ka) composition, as shown in Figure 1, under specified input voltage, the capacity of Inductive ballast (L) series capacitance is (C), in figure, at the power input (L end, N end) of the drive electric power unit of ballast formula LED lamp, go back and be connected with the circuit arrangement (DJ) that driving switch when input voltage changes (Ka) state is changed.
Shown in Fig. 2 is the circuit structure schematic diagram of the device part of switch (Ka) state switching circuit device (DJ).There is shown power supply circuits, sample circuit, drive signal circuit, the drive circuit of switch (Ka) state switching circuit device (DJ) device, the executive circuit of the state conversion of relay (Ja).
Power supply circuits shown in figure comprise:
Capacitance decompression element (C1), resistance (R), rectifier cell (D1), (D2) voltage stabilizing element (W), filter element (C2), a termination power input (L) after described capacitance decompression unit (C1) is in parallel with resistance (R), the same rectifier cell of the other end (D1) negative pole is connected with (D2) anodal contact, (D1) positive pole connects power input (N) end, (D2) one end of the same voltage stabilizing element of negative pole (W) and the shunt circuit of filter element (C2) is connected, (W), (C2) (N) of another termination power input of shunt circuit end.
The sample circuit of the switch shown in figure (Ka) state switching circuit device (DJ) comprising:
Unidirectional element (Da1), electric capacity (Ca1), resistance (Ra1), resistance (Ra2), resistance (Ra3), described unidirectional element (Da1), resistance (Ra1), resistance (Ra2), resistance (Ra3) the mutually rear one end of series connection are connected with (L) end of power supply input, the other end is connected with (N) end of power supply input, the negative pole of the same unidirectional element in one end (Da1) of electric capacity (Ca1) is connected with the tie point of resistance (Ra1), and one end (Ca1) connects with (N) end of power supply input.
The drive signal circuit of the switch shown in figure (Ka) state switching circuit device (DJ) comprising:
Integrated circuit (IC) chip (ICa) and electric capacity (Ca2), resistance (Ra4), the power input of described integrated circuit (IC) chip (ICa) connects the A point of described power supply circuits, high-triggering end is connected with the tie point of resistance (Ra1), resistance (Ra2), the center tap terminal of low triggering end connecting resistance (Ra3), output connecting resistance (Ra4), control end connects (N) end of power supply input by electric capacity (Ca2), common is connected with (N) end of power supply input.
The executive circuit of the drive circuit of the switch shown in figure (Ka) state switching circuit device (DJ) and state conversion comprises:
Driving element transistor (GBa), state conversion executive component relay (Ja), unidirectional element (Da2), described transistor (GBa) base stage connecting resistance (Ra4), collector electrode is connected with the one end of relay (Ja), emitter is connected with (N) end of power supply input, the other end of relay (Ja) is connected with the A point of power supply circuits, and unidirectional element (Da2) is also connected in the two ends of relay (Ja).
Shown in above-mentioned Fig. 1 and Fig. 2, the operation principle of circuit is: when input adds specified alternating voltage, electric capacity (C)+(Ca), Inductive ballast (L) and converter circuit provide condition of work to LED lamp.Because electric power system can not provide constant operating voltage, when input terminal voltage changes, LED lamp system electric current also can change along with change in voltage, and the setting of Fig. 1 and Fig. 2 circuit is for when input terminal voltage significantly changes, and reduces the curent change of LED lamp system.Carefully state the working condition of each element circuit below:
Sample circuit obtains the amount that input voltage changes, this variable is added to the trigger end of the integrated circuit (IC) chip (ICa) of drive signal circuit, (ICa) be the Schmidt trigger that 555 timers form, high-triggering end is 6 pin of the threshold voltage TH (ICa) of trigger namely, the logical circuit of this value is 0, output 3 pin that reach this value (ICa) are 0, driving element transistor (GBa) base potential is 0, relay (Ja) is without electricity, do not work, switch (Ka) is normally open.When input voltage is during lower than the trigger voltage of set low triggering end, 2 pin of the trigger voltage TR of trigger (ICa) namely, drive signal circuit upset, (ICa) logical circuit of output 3 pin is 1, driving element transistor (GBa) base stage is high potential, (GBa) saturation conduction, relay (Ja) obtains electric adhesive, and switch (Ka) is dynamic circuit connector state.According to above-mentioned logical relation, the result obtaining is when input terminal voltage raises, and that corresponding is low capacity electric capacity (C), and visible technical scheme of the present invention has solved the problem that raises and cause circuital current to increase due to input terminal voltage.Known equally according to above-mentioned logical relation, when input terminal voltage reduces, corresponding is that jumbo electric capacity (C)+(Ca), visible technical scheme of the present invention has solved because input terminal voltage reduces the problem that causes circuital current to reduce.(ICa) 8 pin are positive source VC, and 4 pin (ICa) are forced resetting end MR, and the present embodiment is that 4 pin forced resetting end MR are met to positive supply VC together with 8 pin, and 1 pin (ICa) connects common.In the circuit of Fig. 2, regulate (Ra2) and (Ra3) threshold voltage TH and trigger voltage TR can be set.When 5 pin of (ICa) add control voltage, can change the return difference characteristic of trigger, thereby obtain different switching levels, the present embodiment connects power supply input (N) end, i.e. fixing return difference characteristic by control end by electric capacity (Ca2).The drive circuit that the present embodiment is used considers that the efficiency of the drive electric power unit that is conducive to improve ballast formula LED lamp arranges, if use SE555 can save drive circuit, because the output current of SE555 is 200mA, can directly drive relay (Ja), the Icc of SE555 is 15mA when Ucc=15V, therefore own loss has selected the negligible ICM7555 of own loss up to 0.225W the present embodiment, so used the drive circuit of transistor (GBa) as relay (Ja).The power supply circuits of the circuit arrangement (DJ) that switch (Ka) state is changed are that the executive circuit of changing into the state of drive signal circuit, drive circuit, relay (Ja) provides needed electric energy.In the circuit of Fig. 2, electric capacity (Ca1) is filter capacitor, is (Da2) when relay (Ja) dead electricity, eliminates induced potential, protective transistor (GBa).
Shown in Fig. 3 is the local circuit structure principle chart of the drive electric power unit of ballast formula LED lamp.Shown in figure at the two ends of electric capacity (C) (L end and node 1 end) and be connected with electric capacity (Cb) and series circuit that switch (Kb) forms and be connected with electric capacity (Cc) and the series circuit of switch (Kc) composition and be connected with, the series circuit of electric capacity (Cd) and switch (Kd) composition.The actuator of the driving power of the ballast formula LED lamp that the same Fig. 1 of local circuit structure shown in this figure, Fig. 4 are constant current of the present invention together, the driving power that can adapt to the ballast formula LED lamp of wide voltage relies on him to realize.There is shown the series circuit that another three routing capacitances the series circuit forming except electric capacity (Ca) and switch (Ka) and switch form, is respectively the series circuit of series circuit, electric capacity (Cd) and switch (Kd) composition of electric capacity (Cb) and switch (Kb) series circuit, electric capacity (Cc) and switch (Kc) composition that form.Its operation principle is identical with Fig. 1.
Shown in Fig. 4 is the local circuit structure principle chart of the drive electric power unit of another kind of ballast formula LED lamp of the present invention, the sample circuit of the driving switch shown in figure (Kb) state conversion comprises unidirectional element (Db1), electric capacity (Cb1), resistance (Rb1), resistance (Rb2), resistance (Rb3), described unidirectional element (Db1), resistance (Rb1), resistance (Rb2), resistance (Rb3) the mutually rear one end of series connection is connected with (L) end of power supply input, the other end is connected with (N) end of power supply input, the negative pole of the same unidirectional element in one end (Db1) of electric capacity (Cb1) is connected with the tie point of resistance (Rb1), (Cb1) one end connects with (N) end of power supply input.The drive signal circuit of the switch shown in figure (Kb) comprises circuit integrated circuit (IC) chip (ICb) and electric capacity (Cb2), resistance (Rb4), the power input of described integrated circuit (IC) chip (ICb) connects the A point of described power supply circuits, high-triggering end is connected with the tie point of resistance (Rb1), resistance (Rb2), the center tap terminal of low triggering end connecting resistance (Rb3), output connecting resistance (Rb4), control end connects (N) end of power supply input by electric capacity (Cb2), common is connected with (N) end of power supply input.The executive circuit of the drive circuit of the switch shown in figure (Kb) and state conversion comprises driving element transistor (GBb), state conversion executive component relay (Jb), unidirectional element (Db2), described transistor (GBb) base stage connecting resistance (Rb4), collector electrode is connected with the one end of relay (Jb), emitter is connected with (N) end of power supply input, the other end of relay (Jb) is connected with the A point of power supply circuits, and unidirectional element (Db2) is also connected in the two ends of relay (Jb).The power supply of the executive circuit of the drive signal circuit of this circuit, drive circuit, state conversion, is provided by the power supply circuits of switch (Ka) state switching circuit device (DJ).The operation principle of this control unit is basic identical with Fig. 2, and the threshold voltage TH just arranging is different with trigger voltage TR.
The sample circuit of the switch shown in figure (Kc) state conversion comprises unidirectional element (Dc1), electric capacity (Cc1), resistance (Rc1), resistance (Rc2), resistance (Rc3), described unidirectional element (Dc1), resistance (Rc1), resistance (Rc2), resistance (Rc3) the mutually rear one end of series connection is connected with (L) end of power supply input, the other end is connected with (N) end of power supply input, the negative pole of the same unidirectional element in one end (Dc1) of electric capacity (Cc1) is connected with the tie point of resistance (Rc1), (Cc1) one end connects with (N) end of power supply input.
The drive signal circuit of the switch shown in figure (Kc) comprises circuit integrated circuit (IC) chip (ICc) and electric capacity (Cc2), resistance (Rc4), the power input of described integrated circuit (IC) chip (ICc) connects the A point of described power supply circuits, high-triggering end is connected with the tie point of resistance (Rc1), resistance (Rc2), the center tap terminal of low triggering end connecting resistance (Rc3), output connecting resistance (Rc4), control end connects (N) end of power supply input by electric capacity (Cc2), common is connected with (N) end of power supply input.
The executive circuit of the drive circuit of the switch shown in figure (Kc) and state conversion comprises driving element transistor (GBc), state conversion executive component relay (Jc), unidirectional element (Dc2), described transistor (GBc) base stage connecting resistance (Rc4), collector electrode is connected with the one end of relay (Jc), emitter is connected with (N) end of power supply input, the other end of relay (Jc) is connected with the A point of power supply circuits, and unidirectional element (Dc2) is also connected in the two ends of relay (Jc).The operation principle of this control unit is basic identical with Fig. 2, and the threshold voltage TH just arranging is different with trigger voltage TR.
The sample circuit of the switch shown in figure (Kd) state conversion comprises unidirectional element (Dd1), electric capacity (Cd1), resistance (Rd1), resistance (Rd2), resistance (Rd3), described unidirectional element (Dd1), resistance (Rd1), resistance (Rd2), resistance (Rd3) the mutually rear one end of series connection is connected with (L) end of power supply input, the other end is connected with (N) end of power supply input, the negative pole of the same unidirectional element in one end (Dd1) of electric capacity (Cd1) is connected with the tie point of resistance (Rd1), (Cd1) the other end connects with (N) end of power supply input.
The drive signal circuit of the switch shown in figure (Kd) comprises circuit integrated circuit (IC) chip (ICd) and electric capacity (Cd2), resistance (Rd4), the power input of described integrated circuit (IC) chip (ICd) connects the A point of described power supply circuits, high-triggering end is connected with the tie point of resistance (Rd1), resistance (Rd2), the center tap terminal of low triggering end connecting resistance (Rd3), output connecting resistance (Rd4), control end connects (N) end of power supply input by electric capacity (Cd2), common is connected with (N) end of power supply input.
The executive circuit of the drive circuit of the switch shown in figure (Kd) and state conversion comprises driving element transistor (GBd), state conversion executive component relay (Jd), unidirectional element (Dd2), described transistor (GBd) base stage connecting resistance (Rd4), collector electrode is connected with the one end of relay (Jd), emitter is connected with (N) end of power supply input, the other end of relay (Jd) is connected with the A point of power supply circuits, and unidirectional element (Dd2) is also connected in the two ends of relay (Jd).The operation principle of this control unit is basic identical with Fig. 2, and the threshold voltage TH just arranging is different with trigger voltage TR.
In the circuit of Fig. 1 to Fig. 4, technical scheme of the present invention, the Current Control of LED lamp system is divided into 4 shelves (can divide as required more shelves), be respectively input lower than two shelves of rated voltage and input two shelves higher than rated voltage, now with three different situations, illustrate, the one, input voltage is 160V (lower than rated voltage), input voltage is lower than (ICa), (ICb), (ICc), (ICd) threshold voltage TH, now known according to the logical relation of integrated circuit (IC) chip, (ICa), (ICb), (ICc), (ICd) output is 1, relay (Ja), (Jb), (Jc), (Jd) all adhesives, capacity=the electric capacity of circuit capacitance (C)+(Ca)+(Cb)+(Cc)+(Cd).The 2nd, input voltage is 220V (rated voltage), and now the threshold voltage TH due to (ICc), (ICd) is set to lower than 220V (higher than 160V), and output is 0, so relay (Jc), (Jd) not adhesive.Because the threshold voltage TH of (ICa), (ICb) is set to higher than 220V (lower than 250V), output is 1, so relay relay (Ja), (Jb) adhesive.Capacity=the electric capacity of circuit capacitance (C)+(Ca)+(Cb).The 3rd, input voltage be 250V (higher than rated voltage) now due to input electricity all higher than the threshold voltage TH of (ICa), (ICb), (ICc), (ICd), so (ICa), (ICb), (ICc), (ICd) output are 0, relay (Ja), (Jb), (Jc), (Jd) not adhesives, the capacity=electric capacity of circuit capacitance (C).
Above-described embodiment, input voltage is when 160V～250V changes, and the rate of change of circuital current can reach ± 5%, and efficiency can reach 95%.
What the invention described above was enumerated is only better embodiment of the present invention, and all equivalent technologies conversion of doing under operation principle of the present invention and thinking are all considered as protection scope of the present invention.
Claims (5)
1. a drive electric power unit for ballast formula LED lamp, comprises Inductive ballast (L), electric capacity (C), it is characterized in that:
The two ends of said electric capacity (C) (L end and node 1 end) are at least connected to the series circuit of a routing capacitance (Ca) and switch (Ka) composition;
The power input of the drive electric power unit of said ballast formula LED lamp (L end, N end), goes back and is connected with the circuit arrangement (DJ) that driving switch when input voltage changes (Ka) state is changed.
2. according to the drive electric power unit of the said ballast formula of claim 1 LED lamp, it is characterized in that: said switch (Ka) state switching circuit device (DJ) comprises the executive circuit of power supply circuits, sample circuit, drive signal circuit, drive circuit, state conversion.
3. according to the drive electric power unit of the said ballast formula of claim 2 LED lamp, it is characterized in that: the power supply circuits of said switch (Ka) state switching circuit device (DJ) comprising:
Capacitance decompression element (C1), resistance (R), rectifier cell (D1), (D2), voltage stabilizing element (W), filter element (C2), a termination power input (L) after described capacitance decompression unit (C1) is in parallel with resistance (R), the same rectifier cell of the other end (D1) negative pole is connected with (D2) anodal contact, (D1) positive pole connects power input (N) end, (D2) one end of the same voltage stabilizing element of negative pole (W) and the shunt circuit of filter element (C2) is connected, (W), (C2) (N) of another termination power input of shunt circuit end,
The sample circuit of said switch (Ka) state switching circuit device (DJ) comprising:
Unidirectional element (Da1), electric capacity (Ca1), resistance (Ra1), resistance (Ra2), resistance (Ra3), described unidirectional element (Da1), resistance (Ra1), resistance (Ra2), resistance (Ra3) the mutually rear one end of series connection are connected with (L) end of power supply input, the other end is connected with (N) end of power supply input, the negative pole of the same unidirectional element in one end (Da1) of electric capacity (Ca1) is connected with the tie point of resistance (Ra1), and the other end (Ca1) connects with (N) end of power supply input;
The drive signal circuit of said switch (Ka) state switching circuit device (DJ) comprising:
Integrated circuit (IC) chip (ICa) and electric capacity (Ca2), resistance (Ra4), the power input of described integrated circuit (IC) chip (ICa) connects the A point of described power supply circuits, high-triggering end is connected with the tie point of resistance (Ra1), resistance (Ra2), the center tap terminal of low triggering end connecting resistance (Ra3), output connecting resistance (Ra4), control end connects (N) end of power supply input by electric capacity (Ca2), common is connected with (N) end of power supply input;
The executive circuit of the drive circuit of said switch (Ka) state switching circuit device (DJ) and state conversion comprises:
Driving element transistor (GBa), state conversion executive component relay (Ja), unidirectional element (Da2), described transistor (GBa) base stage connecting resistance (Ra4), collector electrode is connected with the one end of relay (Ja), emitter is connected with (N) end of power supply input, the other end of relay (Ja) is connected with the A point of power supply circuits, and unidirectional element (Da2) is also connected in the two ends of relay (Ja).
4. according to the drive electric power unit of the said ballast formula of claim 1 or 2 LED lamp, it is characterized in that: the series circuit that electric capacity (Cb) and switch (Kb) form is also connected in the series circuit that two ends (L end and node 1 end), electric capacity (Cc) and the switch (Kc) of electric capacity (C) form and the series circuit of two ends (L end and node 1 end), electric capacity (Cd) and switch (Kd) composition that is connected in electric capacity (C) be connected in the two ends (L holds and node 1 end) of electric capacity (C);
The power supply circuits two ends of said switch (Ka) state switching circuit device (DJ) (the N end of node A and power supply input) and be connected with switch (Kb) drive signal circuit, drive circuit and state conversion executive circuit, the executive circuit of the drive signal circuit of switch (Kc), drive circuit and state conversion, the executive circuit of the drive signal circuit of switch (Kd), drive circuit and state conversion;
Said switch (Ka) state switching circuit device (DJ) also comprises: the sample circuit of the sample circuit of driving switch (Kb) state conversion, the conversion of driving switch (Kc) state, the sample circuit of driving switch (Kd) state conversion.
5. according to the drive electric power unit of the said ballast formula of claim 4 LED lamp, it is characterized in that: the drive signal circuit of said switch (Kb) comprises circuit integrated circuit (IC) chip (ICb) and electric capacity (Cb2), resistance (Rb4), the power input of described integrated circuit (IC) chip (ICb) connects the A point of described power supply circuits, high-triggering end and resistance (Rb1), the tie point of resistance (Rb2) is connected, the center tap terminal of low triggering end connecting resistance (Rb3), output connecting resistance (Rb4), control end connects (N) end of power supply input by electric capacity (Cb2), common is connected with (N) end of power supply input,
The executive circuit of the drive circuit of said switch (Kb) and state conversion comprises driving element transistor (GBb), state conversion executive component relay (Jb), unidirectional element (Db2), described transistor (GBb) base stage connecting resistance (Rb4), collector electrode is connected with the one end of relay (Jb), emitter is connected with (N) end of power supply input, the other end of relay (Jb) is connected with the A point of power supply circuits, and unidirectional element (Db2) is also connected in the two ends of relay (Jb);
The sample circuit of said driving switch (Kb) state conversion comprises unidirectional element (Db1), electric capacity (Cb1), resistance (Rb1), resistance (Rb2), resistance (Rb3), described unidirectional element (Db1), resistance (Rb1), resistance (Rb2), resistance (Rb3) the mutually rear one end of series connection is connected with (L) end of power supply input, the other end is connected with (N) end of power supply input, the negative pole of the same unidirectional element in one end (Db1) of electric capacity (Cb1) is connected with the tie point of resistance (Rb1), (Cb1) the other end connects with (N) end of power supply input,
The drive signal circuit of said switch (Kc) comprises circuit integrated circuit (IC) chip (ICc) and electric capacity (Cc2), resistance (Rc4), the power input of described integrated circuit (IC) chip (ICc) connects the A point of described power supply circuits, high-triggering end is connected with the tie point of resistance (Rc1), resistance (Rc2), the center tap terminal of low triggering end connecting resistance (Rc3), output connecting resistance (Rc4), control end connects (N) end of power supply input by electric capacity (Cc2), common is connected with (N) end of power supply input;
The executive circuit of the drive circuit of said switch (Kc) and state conversion comprises driving element transistor (GBc), state conversion executive component relay (Jc), unidirectional element (Dc2), described transistor (GBc) base stage connecting resistance (Rc4), collector electrode is connected with the one end of relay (Jc), emitter is connected with (N) end of power supply input, the other end of relay (Jc) is connected with the A point of power supply circuits, and unidirectional element (Dc2) is also connected in the two ends of relay (Jc);
The sample circuit of said driving switch (Kc) state conversion comprises unidirectional element (Dc1), electric capacity (Cc1), resistance (Rc1), resistance (Rc2), resistance (Rc3), described unidirectional element (Dc1), resistance (Rc1), resistance (Rc2), resistance (Rc3) the mutually rear one end of series connection is connected with (L) end of power supply input, the other end is connected with (N) end of power supply input, the negative pole of the same unidirectional element in one end (Dc1) of electric capacity (Cc1) is connected with the tie point of resistance (Rc1), (Cc1) the other end connects with (N) end of power supply input,
The drive signal circuit of said switch (Kd) comprises circuit integrated circuit (IC) chip (ICd) and electric capacity (Cd2), resistance (Rd4), the power input of described integrated circuit (IC) chip (ICd) connects the A point of described power supply circuits, high-triggering end is connected with the tie point of resistance (Rd1), resistance (Rd2), the center tap terminal of low triggering end connecting resistance (Rd3), output connecting resistance (Rd4), control end connects (N) end of power supply input by electric capacity (Cd2), common is connected with (N) end of power supply input;
The executive circuit of the drive circuit of said switch (Kd) and state conversion comprises driving element transistor (GBd), state conversion executive component relay (Jd), unidirectional element (Dd2), described transistor (GBd) base stage connecting resistance (Rd4), collector electrode is connected with the one end of relay (Jd), emitter is connected with (N) end of power supply input, the other end of relay (Jd) is connected with the A point of power supply circuits, and unidirectional element (Dd2) is also connected in the two ends of relay (Jd);
The sample circuit of said driving switch (Kd) state conversion comprises unidirectional element (Dd1), electric capacity (Cd1), resistance (Rd1), resistance (Rd2), resistance (Rd3), described unidirectional element (Dd1), resistance (Rd1), resistance (Rd2), resistance (Rd3) the mutually rear one end of series connection is connected with (L) end of power supply input, the other end is connected with (N) end of power supply input, the negative pole of the same unidirectional element in one end (Dd1) of electric capacity (Cd1) is connected with the tie point of resistance (Rd1), (Cd1) the other end connects with (N) end of power supply input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210348080.0A CN103582232A (en) | 2012-08-07 | 2012-08-27 | Driving power device of ballast type LED lamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210278553 | 2012-08-07 | ||
| CN201210278553.4 | 2012-08-07 | ||
| CN201210348080.0A CN103582232A (en) | 2012-08-07 | 2012-08-27 | Driving power device of ballast type LED lamp |
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| CN103582232A true CN103582232A (en) | 2014-02-12 |
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| CN201210348080.0A Pending CN103582232A (en) | 2012-08-07 | 2012-08-27 | Driving power device of ballast type LED lamp |
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| CN107889319A (en) * | 2017-12-14 | 2018-04-06 | 李顺华 | A kind of current foldback circuit of the driving power of ballast formula LED |
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Application publication date: 20140212 Assignee: Ningbo Aikesiti Electric Appliance Co., Ltd. Assignor: Li Shunhua Contract record no.: 2013330000007 Denomination of invention: Driving power supply device of ballasting type LED lamp License type: Common License Record date: 20130121 |
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