CN201590937U

CN201590937U - Separated high-power fluorescent lamp ballast with wide-voltage high-power factor

Info

Publication number: CN201590937U
Application number: CN200920179968XU
Authority: CN
Inventors: 杨戴核
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-12-09
Filing date: 2009-12-09
Publication date: 2010-09-22
Anticipated expiration: 2019-12-09

Abstract

The utility model relates to a fluorescent lamp ballast, in particular to a separated high-power fluorescent lamp ballast with wide-voltage high-power factor. The fluorescent lamp ballast comprises an EMI filter circuit (1), a power factor correcting circuit (2), a high-frequency oscillation and half-bridge starting circuit (3), an output resonance circuit (4) and a fluorescent lamp (5) with a separated structure. The ballast technology provided by the utility model has the advantage that when the input voltage ranges between 90 V and 260 V, the power factor reaches more than 0.99, the total harmonic content of current is less than 5 percent, and the direct current supply of an output power starting circuit is stabilized at 400 V; in the areas with larger range of voltage fluctuation, the influence of input voltage variation to the service life disappears, so that the service life of a ballast is prolonged; and meanwhile, due to separable structures of lamp tubes, only simple replacement is required when any one of the lamp tubes is broken or the ballast is damaged, thereby increasing the recycling rate of available resource.

Description

The split type fluorescent lamp ballast of wide-voltage high-power factor high-power

Technical field

The utility model relates to a kind of fluorescent lamp ballast, the split type fluorescent lamp ballast of particularly a kind of wide-voltage high-power factor high-power.

Background technology

What existing fluorescent lamp adopted is inductance type ballast and high-frequency electronic ballast, and for powerful fluorescent lamp, because its pipe pressure is higher, electric current is big by impedance, usually Inductive ballast can't make it normally light, so can only use high-frequency electric ballast.

Rely on the high-power ballast of passive power factor compensation circuit now, input power factor about 0.92, but electric current total harmonic distortion (THD) at 20%-30%, the input current total harmonic distortion is big, make the ballast less stable, shortened the useful life of ballast.Simultaneously, because existing ballast adopts internal hidden type structure usually, it is integral type, ballast damages the also just termination of back product life-span itself, this not only causes the waste of useful resources fluorescent tube, increase customer using cost, and owing in the fluorescent tube tribute steam and fluorescent material are arranged, the excessive discarded pollution that has also increased the weight of environment.

Summary of the invention

Technical problem to be solved in the utility model is short useful life at existing high-power ballast, the use cost height, and the shortcoming that the resource reutilization rate is low is invented the split type fluorescent lamp ballast of a kind of wide-voltage high-power factor high-power.

For solving the problems of the technologies described above, the utility model is realized as follows: the split type fluorescent lamp ballast of wide-voltage high-power factor high-power described in the utility model, fluorescent lamp by EMI filter circuit, circuit of power factor correction, the higher-order of oscillation and half-bridge start-up circuit, output resonant circuit and split-type structural is formed: the access of connecting respectively of the fluorescent lamp of EMI filter circuit, circuit of power factor correction, output resonant circuit and split-type structural, and the higher-order of oscillation and half-bridge start-up circuit are parallel between the output resonant circuit.

Described EMI filter circuit, it mainly prevents the electromagnetism electric wave that produces in the ballast to be induced on the power line, be made up of capacitor C 1, C2 and inductance T1: the two ends of inductance T1 are shunt capacitance C1 and C2 respectively, one end of capacitor C 1 is parallel to the AC power supplies of external input, and the output of capacitor C 2 ends is connected to circuit of power factor correction.

Described circuit of power factor correction, with EMI filter circuit output is input, shunt voltage sensing resistor R1 and R2 and ground join, while shunt capacitance C3, C4, by boosting of series connection step-up transformer T2, during the switch MOS pipe Q1 conducting of output parallel connection, the diode D3 of output can carry out rectification and charge in electrolytic capacitor C26, the resistance R 5 of step-up transformer T2 input series connection starts the supply voltage that exceeds the time limit, when starting step-up transformer T2, electric current is by the electric capacity D2 of serial connection, ZD1, resistance R 3 and capacitor C 5, it is stable that C25 carries out rectification, and the current sense resistance R 8 that metal-oxide-semiconductor Q1 connects, by the feedback to electric current, and the resistance value of input voltage sensing resistor R1 and R2 is recently divided the input voltage actuating range, resistance R 9 is the output voltage sensing resistor with R10, makes the output direct-flow steady voltage in 400V by resistance ratio.

The described higher-order of oscillation and half-bridge start-up circuit, the element that is connected with the Qi Ge pin by chip L2 constitutes the half-bridge start-up circuit, be mainly used in protective circuit, to ensure that fluorescent tube obtains the purpose of high frequency voltage and electric current, 4 pins of L2 connecting resistance R 11 and capacitor C 7 decide the higher-order of oscillation frequency that produces after starting with this parameter; 5 pins of L2 are connecting resistance R 13,7 pins and are connecting capacitor C 10 and ground connection, electrode preheating and protective circuit when being mainly used in quick startup; 2,3 pins of L2 are connected with diode D5, shunt capacitance C8, C9, and 12 pin series diode D12 and capacitor C 14, its acting in conjunction is carried out rectifying and wave-filtering to output high voltage, to start the supply voltage guarantee of chip L2; 8,9 pin parallel resistance R14, the R18 of L2, capacitor C 11, C13 and diode D11, form the overvoltage sensing circuit, in more than transducing signal reaches 5V, transmit signal and give chip L2, make it stop output high voltage, circuit is played a protective role, and when separating the fluorescent tube of this damage, do not influence remaining fluorescent tube to light once more; 11,13 pin parallel field effect metal-oxide-semiconductor Q2, the Q3 of L2 are for half-bridge circuit provides the voltage guarantee.

Described output resonant circuit in conjunction with capacitor C 15, is exported resonance inductor T3 by output, and diode D6 is in series, and its output promptly connects the fluorescent lamp of split-type structural, and this output resonant circuit can be composed in parallel by many groups resonant circuit.

The fluorescent lamp of described split-type structural, be formed in parallel by many groups fluorescent lamp, every group input one end ground connection, one termination output resonant circuit, output resonant capacitor C20 in parallel therebetween, this part is placed on the inside, Lamp cup inside of separate type, ensures high frequency voltage and electric current that fluorescent tube needs, if there is not fluorescent tube output resonant capacitor also not have, this moment, circuit was at open state.

Good effect of the present utility model is: the ballast technology that the utility model provides, in input voltage 90V-260V scope, power factor reaches more than 0.99, the electric current total harmonic distortion is below 5%, the DC power supply of power output start-up circuit can be stabilized in 400V, so during high-frequency lighting, the voltage of fluorescent tube is all consistent, also reduced influence in use to power net, in the bigger area of scope range of the fluctuation of voltage, the change of input voltage is disappeared to the influence in life-span, has improved the useful life of ballast; Because the separable structure of fluorescent tube when any tubes breakage or ballast damage, only needs simple the replacing to get final product, improved the utilance again of available resources simultaneously.

Description of drawings

Fig. 1 is the split type fluorescent lamp ballast structural representation of the utility model wide-voltage high-power factor high-power

Fig. 2 is the split type fluorescent-lamp ballast circuit schematic diagram of the utility model wide-voltage high-power factor high-power

Fig. 3 is EMI filter circuit figure

Fig. 4 is circuit of power factor correction figure

Fig. 5 is the higher-order of oscillation and half-bridge start-up circuit figure

Fig. 6 is output resonant circuit figure

Fig. 7 is the fluorescent lamp structure figure of split-type structural

Among the figure, 1EMI filter circuit 2 circuit of power factor correction

3 higher-orders of oscillation and half-bridge start-up circuit

The fluorescent lamp of 4 output resonant circuits, 5 split-type structurals

Embodiment

As shown in Figure 1, the split type fluorescent lamp ballast of wide-voltage high-power factor high-power described in the utility model, fluorescent lamp (5) by EMI filter circuit (1), circuit of power factor correction (2), the higher-order of oscillation and half-bridge start-up circuit (3), output resonant circuit (4) and split-type structural is formed: the access of connecting respectively of the fluorescent lamp (5) of EMI filter circuit (1), circuit of power factor correction (2), output resonant circuit (4) and split-type structural, and the higher-order of oscillation and half-bridge start-up circuit (3) are parallel between the output resonant circuit (4).

Described EMI filter circuit (1), be made up of capacitor C 1, C2 and inductance T1: the two ends of inductance T1 are shunt capacitance C1 and C2 respectively, and an end of capacitor C 1 is parallel to the AC power supplies of external input, and the output of capacitor C 2 ends connects circuit of power factor correction (2).

Described circuit of power factor correction (2), with EMI filter circuit (1) output is input, shunt voltage sensing resistor R1 and R2 and ground join, while shunt capacitance C3, C4, by boosting of series connection step-up transformer T2, during the switch MOS pipe Q1 conducting of output parallel connection, the diode D3 of output can carry out rectification and charge in electrolytic capacitor C26, the resistance R 5 of step-up transformer T2 input series connection starts the supply voltage that exceeds the time limit, when starting step-up transformer T2, electric current is by the electric capacity D2 of serial connection, ZD1, resistance R 3 and capacitor C 5, it is stable that C25 carries out rectification, and the current sense resistance R 8 that metal-oxide-semiconductor Q1 connects, by the feedback to electric current, and the resistance value of input voltage sensing resistor R1 and R2 is recently divided the input voltage actuating range, resistance R 9 is the output voltage sensing resistor with R10, makes the output direct-flow steady voltage in 400V by resistance ratio.

4 pins that the described higher-order of oscillation and half-bridge start-up circuit (3), the element that is connected with the Qi Ge pin by chip L2 constitute half-bridge start-up circuit: L2 connecting resistance R 11 and capacitor C 7 decide the higher-order of oscillation frequency that produces after starting with this parameter; 5 pins of L2 are connecting resistance R 13,7 pins and are connecting capacitor C 10 and ground connection, electrode preheating and protective circuit when being mainly used in quick startup; 2,3 pins of L2 are connected with diode D5, shunt capacitance C8, C9, and 12 pin series diode D12 and capacitor C 14, its acting in conjunction is carried out rectifying and wave-filtering to output high voltage, to start the supply voltage guarantee of chip L2; 8,9 pin parallel resistance R14, the R18 of L2, capacitor C 11, C13 and diode D11, form the overvoltage sensing circuit, in more than transducing signal reaches 5V, transmit signal and give chip L2, make it stop output high voltage, circuit is played a protective role, and when separating the fluorescent tube of this damage, do not influence remaining fluorescent tube to light once more; 11,13 pin parallel field effect metal-oxide-semiconductor Q2, the Q3 of L2 are for half-bridge circuit provides the voltage guarantee.

Described output resonant circuit (4) in conjunction with capacitor C 15, is exported resonance inductor T3 by output, and diode D6 is in series, and its output promptly connects the fluorescent lamp (5) of split-type structural, and this output resonant circuit (4) can be composed in parallel by many groups resonant circuit.

The fluorescent lamp of described split-type structural (5), be formed in parallel by many groups fluorescent lamp, every group input one end ground connection, one termination output resonant circuit (4), output resonant capacitor C20 in parallel therebetween, this part is placed on the inside, Lamp cup inside of separate type, ensures high frequency voltage and electric current that fluorescent tube needs, if there is not fluorescent tube output resonant capacitor also not have, this moment, circuit was at open state.

Claims

1. split type fluorescent lamp ballast of wide-voltage high-power factor high-power, it is characterized in that: its fluorescent lamp (5) by EMI filter circuit (1), circuit of power factor correction (2), the higher-order of oscillation and half-bridge start-up circuit (3), output resonant circuit (4) and split-type structural is formed: the access of connecting respectively of the fluorescent lamp (5) of EMI filter circuit (1), circuit of power factor correction (2), output resonant circuit (4) and split-type structural, and the higher-order of oscillation and half-bridge start-up circuit (3) are parallel between the output resonant circuit (4).

2. the split type fluorescent lamp ballast of wide-voltage high-power factor high-power according to claim 1, it is characterized in that: described EMI filter circuit (1), be made up of capacitor C 1, C2 and inductance T1: the two ends of inductance T1 are shunt capacitance C1 and C2 respectively, one end of capacitor C 1 is parallel to the AC power supplies of external input, and the output of capacitor C 2 ends connects circuit of power factor correction (2).

3. the split type fluorescent lamp ballast of wide-voltage high-power factor high-power according to claim 1, it is characterized in that: described circuit of power factor correction (2), with EMI filter circuit (1) output is input, shunt voltage sensing resistor R1 and R2 and ground join, while shunt capacitance C3, C4, by boosting of series connection step-up transformer T2, during the switch MOS pipe Q1 conducting of output parallel connection, the diode D3 of output can carry out rectification and charge in electrolytic capacitor C26, the resistance R 5 of step-up transformer T2 input series connection starts the supply voltage that exceeds the time limit, when starting step-up transformer T2, electric current is by the electric capacity D2 of serial connection, ZD1, resistance R 3 and capacitor C 5, it is stable that C25 carries out rectification, and the current sense resistance R 8 that metal-oxide-semiconductor Q1 connects, by feedback to electric current, and the resistance value of input voltage sensing resistor R1 and R2 recently divides the input voltage actuating range, and resistance R 9 is the output voltage sensing resistor with R10, makes the output direct-flow steady voltage in 400V by resistance ratio.

4. the split type fluorescent lamp ballast of wide-voltage high-power factor high-power according to claim 1, it is characterized in that: the described higher-order of oscillation and half-bridge start-up circuit (3), 4 pins that the element that is connected with the Qi Ge pin by chip L2 constitutes half-bridge start-up circuit: L2 connecting resistance R 11 and capacitor C 7 decide the higher-order of oscillation frequency that produces after starting with this parameter; 5 pins of L2 are connecting resistance R 13,7 pins and are connecting capacitor C 10 and ground connection, electrode preheating and protective circuit when being mainly used in quick startup; 2,3 pins of L2 are connected with diode D5, shunt capacitance C8, C9, and 12 pin series diode D12 and capacitor C 14, its acting in conjunction is carried out rectifying and wave-filtering to output high voltage, to start the supply voltage guarantee of chip L2; 8,9 pin parallel resistance R14, the R18 of L2, capacitor C 11, C13 and diode D11, form the overvoltage sensing circuit, in more than transducing signal reaches 5V, transmit signal and give chip L2, make it stop output high voltage, circuit is played a protective role, and when separating the fluorescent tube of this damage, do not influence remaining fluorescent tube to light once more; 11,13 pin parallel field effect metal-oxide-semiconductor Q2, the Q3 of L2 are for half-bridge circuit provides the voltage guarantee.

5. the split type fluorescent lamp ballast of wide-voltage high-power factor high-power according to claim 1, it is characterized in that: described output resonant circuit (4) is by exporting in conjunction with capacitor C 15, output resonance inductor T3, diode D6 is in series, its output promptly connects the fluorescent lamp (5) of split-type structural, and this output resonant circuit (4) can be composed in parallel by many groups resonant circuit.

6. the split type fluorescent lamp ballast of wide-voltage high-power factor high-power according to claim 1, it is characterized in that: the fluorescent lamp of described split-type structural (5), be formed in parallel by many groups fluorescent lamp, every group input one end ground connection, one termination output resonant circuit (4), output resonant capacitor C20 in parallel therebetween, this part is placed on the inside, Lamp cup inside of separate type, ensure high frequency voltage and electric current that fluorescent tube needs, if there is not fluorescent tube output resonant capacitor also not have, this moment, circuit was at open state.