CN206178311U - Flash lamp module and flashlight power module - Google Patents

Abstract

The utility model discloses a flash lamp module and flashlight power module. The flashlight power module is used for the flash light source power supply for the emergent ray, the flashlight power module includes a protection circuit for receive first voltage and first electric current, and be directed against first voltage steps up the transform and obtains and export a second voltage, thereby second voltage is used for charging to an energy storage module and obtains A third voltage, A third voltage is used for the power supply for flash light source. The protection circuit is including the pulse modulation unit that is used for exporting a pulse signal, the protection circuit corresponds pulse signal is directed against the transform of stepping up of first voltage, pulse signal's duty cycle foundation first electric current is adjusted.

Description

Flash lamp module and flash generator module

Technical field

The utility model is related to a kind of light source for being applied to photographic goods, more particularly to a kind of power supply of flash lamp module to set It is standby.

Background technology

Photographic goods general at present are required to use flash lamp, and flash lamp is for video camera provides high brightness instantaneous Light, so as to improve shooting quality.Because apparatus for making a video recording belongs to Portable movable equipment, therefore flash lamp typically uses battery Group is used as its power supply.

In view of the instantaneous driving voltage that flash lamp needs is higher, therefore, at present by the energy storage for a larger capacity Electric capacity is charged, then again by storage capacitor for flash light source provides instantaneous high pressure.Thus, for the charging of storage capacitor The control of time will directly affect the operating efficiency of flash lamp.The charging interval of current flashlight charging module is more long and charges It is less efficient.

Utility model content

In view of this, it is necessary to which a kind of flashlight battery module in raising charge efficiency is provided.

Further, there is provided a kind of flash lamp module with the battery modules.

A kind of flash generator module, powers for the flash light source for emergent ray, the flash generator module Including a protection circuit, for receiving a first voltage and the first electric current, and carry out boosting inverter for the first voltage and A second voltage is obtained and exports, the second voltage is used to be charged so as to obtain tertiary voltage for an energy storage module, described Tertiary voltage is used to be powered for flash light source.The protection circuit includes the impulse modulation list for exporting a pulse signal Unit, the protection circuit correspondence pulse signal carries out boosting inverter for the first voltage, and the pulse signal is accounted for Sky according to first electric current than being adjusted.

A kind of flash lamp module, including above-mentioned flash generator module and a flash light source, the flash light source are used In emergent ray, the flash generator module is used to be powered for the flash light source.

Preferably, when first electric current increases, the dutycycle increase of the pulse signal；When first electric current subtracts Hour, the dutycycle of the pulse signal reduces.

Preferably, when first electric current is 10A, the dutycycle of the pulse signal is 55%-60%.

Preferably, the protection circuit also includes a voltage detecting circuit, and the voltage detecting circuit is used for relatively more described Tertiary voltage and a predetermined voltage, when the tertiary voltage is less than the predetermined voltage, the voltage detecting circuit output one Detection signal simultaneously controls the pulse adjustment unit to export the pulse signal；When the tertiary voltage is more than or equal to described pre- When determining voltage, the voltage detecting circuit exports the detection signal and controls the pulse adjustment unit to stop the output arteries and veins Signal is rushed, so that protection circuit stops output second voltage.

Preferably, the pulse modulation unit includes a start end, a pulse signal output end, control unit and vibration Device, wherein, start end is electrically connected with the voltage detection unit, for receiving the detection signal, the output of pulse signal Hold for exporting the pulse signal, the oscillator is used to exporting a self-oscillatory pulse signal, and by the self-excitation Oscillation pulse signal is exported to described control unit, and described control unit is electrically connected with the start end and oscillator, for according to According to the detection signal and the self-excited oscillation pulse signal output pulse signal, the self-excited oscillation pulse signal and the arteries and veins The frequency for rushing signal is identical with dutycycle.

Preferably, the nor gate of described control unit one, a wherein input of the nor gate is electrically connected with the startup End, receives the detection signal, and an input is electrically connected with the oscillator and receives the self-excited oscillation pulse signal in addition, The nor gate is correspondingly formed the pulse signal according to detection signal with the state of the self-excited oscillation pulse signal.

Preferably, the oscillator includes the first nor gate, the second nor gate, the 3rd nor gate and frequency modulation unit, institute Two inputs for stating the first nor gate are directly in parallel, and output end electrically connects with one of input of second nor gate Connect, meanwhile, output end and the frequency modulation unit of first nor gate are electrically connected with, second nor gate another Input is electrically connected with the FM circuit, and the output end of second nor gate is electrically connected with the FM circuit, described Two inputs of the 3rd nor gate are directly in parallel and output end of with second nor gate is electrically connected with, the described 3rd or The output end of not gate is electrically connected with control unit, and the self-excited oscillation pulse signal is passed from the output end of the 3rd nor gate Control unit is transported to, wherein, frequency modulation unit is used to adjust the frequency of the self-excited oscillation pulse signal.

Preferably, the frequency modulation unit includes first resistor and one first electric capacity, and one end of the first resistor electrically connects First or non-two inputs are connect, the other end is electrically connected with the output end of the first nor gate, one end electricity of first electric capacity Property connection first nor gate two inputs, other end is electrically connected with the output end of second nor gate.

Preferably, the oscillator also includes that one adjusts unit wide, and the tune unit wide is for adjusting the self-oscillation arteries and veins The dutycycle of signal is rushed, the tune unit wide includes second resistance, 3rd resistor and the second electric capacity, the second resistance and second Electric capacity is connected serially to the output end of the 3rd nor gate from two inputs of the 3rd nor gate successively, the 3rd electric capacity it is another Outer one end is electrically connected with the output end of the 3rd nor gate, and the 3rd resistor wherein one end is electrically connected with the second resistance and institute Any one node between the second electric capacity is stated, disconnected frequency modulation unit is defeated in other end electric connection second nor gate Enter end.

Preferably, the protection circuit also includes a switch element and transformer unit, and the switch element is electrically connected with The pulse adjustment unit, for according to the corresponding switching signal of the output of pulse signal, the transformer unit foundation to be opened OFF signal carries out boosting inverter to first voltage, wherein, the switch element is opened including first switch parallel with one another with second Close, the first switch and the second switch are used for according to the corresponding switching signal of the output of pulse signal.

Preferably, the first switch and second switch are N-type metal-oxide semiconductor (MOS), the grid of the first switch Pulse signal adjustment unit is directly electrically connected with the grid of the second switch receive the pulse signal；The first switch Source electrode be directly electrically connected to earth terminal with the source electrode of the second switch；The drain electrode of the first switch is opened with described second The drain electrode of pass is directly electrically connected to the transformer unit, for exporting the switching signal.

Preferably, the transformer unit includes step-up transformer and an electric capacity, and the step-up transformer first is input into End, the first output end, the second output end and the second control end, wherein, the first input end receives the first voltage, institute The second control end is stated for receiving the switching signal；First output end is used to export according to institute with second output end The alternating voltage that first voltage sensing is produced is stated, described electric capacity one end connects earth terminal, and it is defeated that the other end is electrically connected with described first Enter end.

Preferably, the step-up transformer includes primary coil and secondary coil, and the primary coil includes the first input Pole, the second input pole and the 3rd input pole, the first input pole are electrically connected with first input end, and the second input extremely vacantly sets Put, the 3rd input pole is electrically connected with second control end, the secondary coil includes the first output stage and the second output Pole, wherein, first output stage is electrically connected with the first output end, and second output stage is electrically connected with second output End.

Preferably, the first voltage is provided by a battery modules, and the voltage of the first voltage is 6.8-8.4V, described The voltage of tertiary voltage is 320V-340V.

Preferably, the protection circuit also includes an energy storage module, and the second voltage is filled to the energy storage module Electricity, the charging voltage of the energy storage module is 320V-340V.

Compared to prior art, cause that protection circuit is carried according to the pulse signal of pulse modulation unit output in protection circuit The second voltage of confession quickly can charge to energy storage module, effectively provide its charge efficiency, and then cause energy storage mould Group is improved for the power supplying efficiency of flash light source.

Brief description of the drawings

Fig. 1 is the dimensional structure diagram of flash lamp module in the better embodiment of the utility model one.

Fig. 2 is the circuit block diagram of flash generator module as shown in Figure 1.

Fig. 3 is the particular circuit configurations figure of protection circuit as shown in Figure 2.

Fig. 4 is the oscillogram of the pulse signal of pwm unit output as shown in Figure 3.

Main element symbol description

Flash lamp module	10
		Lamp holder	11
Lamp socket	13
		Flash light source	110
Battery modules	131
		Protection circuit	133
Energy storage module	135
		First output end	131a
Switch element	134
		First control end	134a
First connection end	134b
		First switch	Q1
Second switch	Q2
		Grid	G
Source electrode	S
		Drain electrode	D
Transformer unit	136
		Step-up transformer	1361
First electric capacity	C1
		First input end	136a
First output end	136b
		Second output end	136c
Second control end	136d
		First input pole	I1
Second input pole	I2
		3rd input pole	I3
First output stage	O1
		Second output stage	O2
Rectification filtering unit	137
		3rd output end	137a
Voltage detection unit	138
		Pulse modulation unit	139
Start end	139a
		Pulse signal output end	139b
Control unit	1391
		Four nor gate	U4
Oscillator	1392
		First nor gate	U1
Second nor gate	U2
		3rd nor gate	U3
Frequency modulation unit	1393
		First resistor	R1
Second electric capacity	C2
		Adjust unit wide	1394
Second resistance	R2
		3rd resistor	R3
3rd electric capacity	C3
		Earth terminal	GND

Following specific embodiment will further illustrate the utility model with reference to above-mentioned accompanying drawing.

Specific embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made The every other embodiment for being obtained, belongs to the scope of the utility model protection.

Unless otherwise defined, all of technologies and scientific terms used here by the article is led with technology of the present utility model is belonged to The implication that the technical staff in domain is generally understood that is identical.It is specific that term used in description herein book is intended merely to description The purpose of embodiment, it is not intended that in limitation the utility model.Term as used herein " and/or " include one or more phases The arbitrary and all of combination of the Listed Items of pass.

Fig. 1 is referred to, Fig. 1 is the dimensional structure diagram of flash lamp module in the better embodiment of the utility model one.

Flash lamp module 10 includes lamp holder 11 and lamp socket 13, wherein, lamp holder 11 is articulated on lamp socket 13.Set in lamp holder 11 There is flash light source 110, flash light source 110 is used for emergent ray.Flash generator module 130, institute are provided with lamp socket 13 Flash generator module 130 is stated for being that lamp holder 11 is powered for lamp holder 11 provides driving power supply, can normal work. In other change implementation methods, flash generator module 130 can also be arranged at outside lamp socket 13, and by conducting wire and sudden strain of a muscle Light lamp source 110 continues the transmission of power supply signal.

In present embodiment, the driving voltage needed for flash light source 110 is 320-340V, and driving current is 8-12A.When So, in the utility model other change implementation methods, driving voltage and driving current needed for flash light source 110 can be with It is adjusted according to actual demand, is not limited thereto.

2 are referred to, it is the functional-block diagram of flash generator module 130 as shown in Figure 1.

Flash generator module 130 includes battery modules 131, protection circuit 133 and energy storage module 135.

Battery modules 131 are removable installed in lamp socket 13, for providing first voltage and the first electric current.That is to say, When needing battery modules 131 to be powered for flash light source 110, battery modules 131 are fixed in lamp socket 13；When needing battery mould When group 131 need not be that flash light source 110 is powered, battery modules 131 can be removed from lamp socket 13.It should be noted that working as Flash generator module 130 be arranged at lamp socket 13 it is outer when, when need battery modules 131 for flash light source 110 power when, flash of light The battery modules 131 of lamp power supply module 130d are electrically connected with by conductor interface with other circuits, so as to be flash light source 110 Power supply；When needing battery modules 131 to be powered for flash light source 110, by battery modules 131 and flash generator module 130 other circuits are disconnected, or flash generator module 130 is electrically disconnected with flash generator 110.

Specifically, battery modules 131 include the first output end 131a, and it is electrically connected at protection circuit 133, battery modules Include multiple battery units in 131（It is not shown）The first output end 131a is directly electrically connected to positive pole, negative pole is directly electrical It is connected to earth terminal（It is not shown）Mode in parallel constitute.In present embodiment, battery modules 131 include four battery units, The voltage of first voltage is 6.8V-8.4V, and the first electric current is 10A.

Please continue to refer to Fig. 2, protection circuit 133 is electrically connected with battery modules 131 and energy storage module 135, for receiving State first voltage and the first electric current, and for first voltage obtain after boosting treatment and output second voltage is to energy storage Module 135, prevents battery modules 131 from exporting larger current or voltage generation heat and damaging, while can also effectively control There is provided to the duration of the second voltage of energy storage module 135, prevent the transient discharge of energy storage module 135 or charging from causing to damage It is bad.

Energy storage module 135 be electrically connected with flash light source 110, and to receive the second voltage carry out storage so as to Tertiary voltage, the tertiary voltage is used for directly as flash light source 110 is powered.In present embodiment, the energy storage module 135 It is a capacity cell.The capacity cell is 800-1400 microfarads（μF）, tank voltage is 320V-330V.

Fig. 3 is referred to, wherein, Fig. 3 is the particular circuit configurations figure of protection circuit as shown in Figure 2 133.

The protection circuit 133 includes switch element 134, transformer unit 136, rectification filtering unit 137, voltage detecting Unit 138 and pulse modulation unit 139.

Switch element 134 exports the switching signal of different potentials to transformer list under the control of pulse modulation unit 139 Unit 136, transformer unit 136 carries out boosting inverter treatment according to switching signal for first voltage, and by rectifying and wave-filtering Second voltage is formed after the rectification treatment of unit 137 to provide to energy storage module 135.Voltage detection unit 138 is used to compare second Voltage and predeterminated voltage, and according to comparative result control pulse modulation unit 139 whether output pulse signal, that is to say when the When two voltages are less than predeterminated voltage, the control output pulse signal of pulse modulation unit 139 is causing transformer unit 136 for the One voltage carries out boosting inverter, and when second voltage is more than or equal to predeterminated voltage, control pulse modulation unit 139 stops output Pulse signal is with so that transformer unit 136 stops carrying out boosting inverter for first voltage.

The switch element 134 includes the first control end 134a and the first connection end 134b.Wherein, the first control end 134a For receiving the signal to the on off state of controlling switch unit 134, the first connection end 134b is electrically connected with transformer unit 136, wherein, when the switch element 134 is in the conduction state under the control of the first control end 134a received signals, the One connection end 134b exports first switch signal to transformer unit 136, so that transformer unit 136 is directed to battery modules 131 first voltages for providing carry out voltage conversion；When the switch element 134 is in the letter received in the first control end 134a Number control it is lower in cut-off state when, the first connection end 134b exports second switch signal to transformer unit 136 so that Transformer unit 136 stops the voltage conversion for first voltage.

Specifically, switch element 134 includes two electronic switches：First switch Q1 and second switch Q2.In this embodiment party In formula, first switch Q1 and second switch Q2 is N-type metal-oxide-semiconductor（Metal-Oxide-Semiconductor, MOS）.

Wherein, the grid G of first switch Q1 is directly electrically connected to the first control end with the grid G of second switch Q2 134a；The source S of first switch Q1 is directly electrically connected to earth terminal GND with the source S of second switch Q2；First switch Q1's Drain D is directly electrically connected to the first connection end 134b with the drain D of second switch Q2.

Thus, in present embodiment, when the signal for controlling the switch element 134 is high potential, first switch Q1 In the conduction state with second switch Q2, accordingly switch element 134 is by the first switch signal transmission of low potential to transformer Unit 136；When signal for controlling the switch element 134 is low potential, first switch Q1 and second switch Q2 is in and cuts Only state, accordingly switch element 134 is by the second switch signal transmission of high potential to transformer unit 136.

Because switch element 134 uses two electronic switches, so as to effectively increase the driving power of switch element 134, And as a result of N-type metal-oxide-semiconductor, so as to more improve the driving power of switch element 134, reduce switch element 134 In-fighting.

Ground is changed, in the utility model other embodiment, first switch Q1 and second switch Q2 is p-type metal-oxide-semiconductor When, first switch signal is low-potential signal；Second switch signal is high potential signal, is not limited thereto, N-type metal-oxide-semiconductor.

Transformer unit 136 includes the electric capacity C1 of step-up transformer 1361 and first, under the control of first switch signal The first voltage that will be received from battery modules 131 carries out boosting inverter, and one alternating voltage of acquisition is exported.

Transformer unit 136 includes first input end 136a, the first output end 136b, the second output end 136c and second Control end 136d.Wherein, first input end 136a is electrically connected with battery modules 131, for receiving first voltage, the second control end 136d is used to receive first switch signal and second switch signal；First output end 136b and the second output end 136c is used to export The alternating voltage.

Specifically, first electric capacity C1 one end connection earth terminal GND, the other end is electrically connected with the first input end 136a.

The step-up transformer 1361 includes primary coil（Do not indicate）And secondary coil（Do not indicate）, the primary coil It is input into including the first input pole I1, the second input pole I2 and the 3rd input pole I3, the first input pole I1 electric connection first End 136a, the second input pole I2 is vacantly set, and the 3rd input pole I3 is electrically connected with the second control end 136d.Described time Level coil includes the first output stage O1 and the second output stage O2, wherein, the first output stage O1 is electrically connected with the first output end 136b, Second output stage O2 is electrically connected with the second output end 136c.

The step-up transformer 1,361 first is opened according to the 3rd input pole I3 from what the second control end 136d was received The control of OFF signal or second switch signal, is optionally become for the first voltage received from the first input pole I1 Change.That is to say when step-up transformer 1361 receives first switch signal, then carry out boosting inverter for first voltage, work as liter When pressure transformer 1361 receives second switch signal, then stop carrying out boosting inverter for first voltage.

When step-up transformer 1361 receives first switch signal, primary coil is defeated by described first with secondary coil Enter first voltage sensing one alternating voltage of generation that the inputs of pole I1 and the 3rd pole I3 is received, and exported from the first of secondary coil Pole O1 and the second output stage O2 exports the alternating voltage.

The rectification filtering unit 137 includes two inputs（Do not indicate）With one the 3rd output end 137a, wherein, it is described 3rd output end 137a is electrically connected at energy storage module 135.

The rectification filtering unit 137 is the bridge rectifier being made up of four diodes, and its input is electrically connected with institute The first output end 136b and the second output end 136c is stated, for receiving the alternating voltage, 137 pairs of friendships of rectification filtering unit Varying signal carries out bridge rectifier, so as to obtain a second voltage, and second voltage is carried by the 3rd output end 137a It is supplied to energy storage module 135.

The voltage detection unit 138 is electrically connected with energy storage module 135 and pulse modulation unit 139, voltage detecting Unit 138 detects that the energy storage module 135 is provided to the tertiary voltage of flash light source 110, and by itself and a predetermined voltage When being compared, according to the detection signal of comparative result output correspondence current potential to the pulse modulation unit 139.Present embodiment In, when tertiary voltage is less than predetermined voltage, voltage detection unit 138 exports the detection signal of a low potential；Work as tertiary voltage During more than or equal to predetermined voltage, voltage detection unit 138 exports the detection signal of a high potential.

Pulse modulation unit 139 is electrically connected with switch element 134, and pulse modulation unit 139 is according to the detection signal pair A pulse signal to switch element 134 should be exported.The pulse signal is in controlling switch unit 134 as control signal and led Logical state or cut-off state, so that correspondence output first switch signal or second switch signal.

Specifically, pulse modulation unit 139 includes start end 139a and pulse signal output end 139b, wherein, start end 139a is electrically connected with the voltage detection unit 138, and for receiving the detection signal, pulse modulation unit 139 is then according to inspection Survey the corresponding pulse signal of signal output.Pulse signal output end 139b is electrically connected with switch element 134, for exporting the arteries and veins Rush signal to switch element, wherein, the pulse signal as switch element control signal.

Request refers to Fig. 4, and it is the oscillogram of the pulse signal of pwm unit output as shown in Figure 3, this embodiment party In formula, the dutycycle of pulse signal is to determine according to the adjustment of the first electric current.That is to say, when battery modules 131 provided When one electric current changes, the dutycycle of pulse signal also needs to be adjusted change immediately.When first electric current increases, institute State the dutycycle increase of pulse signal；When first electric current reduces, the dutycycle of the pulse signal reduces.Citing and Speech, when the first electric current is 10A, the dutycycle of the pulse signal is preferably set as 55%-60%；And when the first electric current is 8A When, the dutycycle of the pulse signal then needs to be adjusted to 40%-50%.

It should be noted that after model and the capacity of battery modules 131 determine, in use its first voltage with First electric current is then constant to determine, therefore, first electric current changes, refer to the model of battery modules 131, quantity with And with volume change and cause its first voltage and first electric current for exporting to there occurs change.

Pulse modulation unit 139 includes control unit 1391 and oscillator 1392.Oscillator 1392 is used to export a self-excitation The pulse signal of vibration, and oneself oscillation pulse signal is exported to control unit 1391.Control unit 1391 is electrical The start end 139a and oscillator 1392 are connected, for according to the detection signal and self-excited oscillation pulse signal output pulse Signal.It is appreciated that frequency, the dutycycle all same of self-excited oscillation pulse signal and pulse signal.

Specifically, oscillator 1392 includes the first nor gate U1, the second nor gate U2, the 3rd nor gate U3, frequency modulation unit 1393 and adjust unit 1394 wide.

Frequency modulation unit 1393 includes first resistor R1 and the second electric capacity C2, wherein, frequency modulation unit 1393 is used to adjust self-excitation The frequency of oscillation pulse signal, namely adjust the frequency of pulse signal.Adjusting unit wide 1394 includes second resistance R2,3rd resistor R3 and the 3rd electric capacity C3, wherein, adjust unit 1394 wide to be used to adjust the duty of self-excited oscillation pulse signal and pulse signal Than.It should be noted that the frequency modulation unit 1393 is configured for the advance charging and discharging time according to energy storage module 135 , when the charging and discharging time demand of energy storage module 135 changes, can be by adjusting its first resistor R1's and the second electric capacity C2 Numerical value adjusts the frequency of pulse signal to reach, and the tune unit 1394 wide is by adjusting second resistance R2,3rd resistor R3 And the 3rd electric capacity C3 numerical value come reach adjustment pulse signal dutycycle.But, the charging and discharging time of energy storage module 135 is true After fixed, the respective value of frequency modulation unit 1393 and tune unit 1394 wide then mutually should determine that, and will not enter in the course of the work Row adjustment.

Two inputs of the first nor gate U1（Do not indicate）One of them of directly parallel connection, output end and the second nor gate Input（Do not indicate）It is electrically connected with, meanwhile, output end and the frequency modulation unit 1393 of the first nor gate U1 are electrically connected with.

Another input of second nor gate U2 is electrically connected with frequency modulation unit 1393, the output of the second nor gate U2 End is electrically connected with frequency modulation unit 1393.

Two inputs of the 3rd nor gate U3（Do not indicate）It is directly in parallel and electric with the output end of the second nor gate U2 Property connection, the output end of the 3rd nor gate U3（Do not indicate）Control unit 1391 is electrically connected with, and the self-excited oscillation pulse is believed Number transmitted to control unit 1391 from the output end of the 3rd nor gate U3.

One end of first resistor R1 is electrically connected with two inputs of the first nor gate U1, the other end in frequency modulation unit 1393 It is electrically connected with the output end of the first nor gate U1.Second electric capacity C2 one end is electrically connected with two inputs of the first nor gate U1, Other end is electrically connected with the output end of the second nor gate U2.

Second resistance R2 and the 3rd electric capacity C3 is successively from two input strings of the 3rd nor gate U3 in adjusting unit wide 1394 The output end of the 3rd nor gate U3 is coupled to, in other words, the two ends of second resistance R2 are electrically connected with the two of the 3rd nor gate U3 Wherein one end of individual input and the 3rd electric capacity C3, the other end of the 3rd electric capacity C3 is electrically connected with the output of the 3rd nor gate U3 End.

3rd resistor R3 electrical wherein one end is electrically connected with any one section between second resistance R2 and the 3rd electric capacity C3 Point, other end is electrically connected with the input of disconnected frequency modulation unit 1393 in the second nor gate U2.

Control unit 1391 is also a nor gate, and it is defined as four nor gate U4, and wherein the one of four nor gate U4 is defeated Enter end and be electrically connected with start end 139a, receive the detection signal, an input is electrically connected with the defeated of the 3rd nor gate U3 in addition Go out end, receive the self-excited oscillation pulse signal.The output end of four nor gate U4 is electrically connected with switch element 134, the 4th or Not gate U4 is correspondingly formed the pulse signal according to detection signal and the state of the self-excited oscillation pulse signal, and from the 4th The output end of nor gate U4 is exported to switch element 134.

In present embodiment, pulse modulation unit 139 can be realized using an integrated circuit, that is to say control unit 1391 constitute an integrated circuit with oscillator 1392, so that the smaller volume of pulse modulation unit 139, and then cause protection electricity The circuit design on road 133 obtains enough spaces.

Illustrated with step for the operation principle of flash generator module 130 with reference to Fig. 3：

After electricity on flash generator module 130, voltage detection unit 138 detects energy storage module in protection circuit 133 135 voltage is less than predetermined voltage（330V）, voltage detection unit 138 then exports the detection signal of a low potential to impulse modulation The start end 139a of unit 139, so that pulse adjustment unit provides to switch element 134 pulse signal.

Switch element 134 in a cycle, exports a low electricity under pulse signal control during the high potential of pulse signal The first switch signal of position is to transformer unit 136, so that first voltage boost conversion is alternation by transformer unit 136 , to rectification filtering unit 137, alternating voltage after the rectification of rectification filtering unit 137 by forming second voltage for voltage.Described second Voltage is transmitted to energy storage module 135, so as to be charged to energy storage module 135.

In the low potential of pulse signal, switch element then exports the second switch signal of high potential to transformer unit 136, transformer unit 136 stops carrying out first voltage god's conversion.Certainly, pulse signal includes multiple continuous cycles, So as to be charged to energy storage module 135 again and again, word is no longer carried out again and is repeated.In present embodiment, energy storage mould The capacitance of group 135 is 1400 μ F, then the time that energy storage module 135 reaches predetermined voltage from minimum voltage is 2.3 seconds.Work as storage When the capacitance of energy module 135 is reduced, then the time that energy storage module 135 reaches predetermined voltage from minimum voltage will further drop Low, then charge efficiency is then further improved.

When energy storage module 135 charges reaches predetermined voltage, then to the output tertiary voltage of flash light source 110 so as to it Power supply.

At the same time, voltage detection unit 138 is examined for the voltage of the tertiary voltage of the output of energy storage module 135 Survey, when it is more than or equal to predetermined voltage, detection signal exports the detection signal of high potential to pulse modulation unit 139, So as to control pulse modulation unit 139 to stop output pulse signal.

Compared to prior art, first that the dutycycle foundation battery modules 131 of the output of pulse modulation unit 139 are provided is electric Stream carries out corresponding adjustment, so that the output time of battery modules 131 is effectively controlled, to reach effectively protection battery modules 131 Working time and caloric value, prevent the surcharge of energy storage module 135 discharge.

Further, the second electricity of the output that the protection circuit 133 of the pulse signal control after adjusting dutycycle is provided Pressure energy enough quickly carries out quick charge to energy storage module 135, effectively provides its charge efficiency.

It is understood that those skilled in the art can also do other changes etc. in the utility model spirit is used in this reality With new design, without departing from technique effect of the present utility model.These are done according to the utility model spirit Change, should all be included in the utility model it is claimed within the scope of.

Claims (16)

1. a kind of flash generator module, powers for the flash light source for emergent ray, the flash generator module bag A protection circuit is included, for receiving a first voltage and the first electric current, and boosting inverter is carried out for the first voltage and is obtained Obtain and export a second voltage, the second voltage is used to be charged so as to obtain tertiary voltage for an energy storage module, described the Three voltages are used to be powered for flash light source, it is characterised in that：The protection circuit includes the arteries and veins for exporting a pulse signal Modulated unit, the protection circuit correspondence pulse signal carries out boosting inverter, the pulse for the first voltage The dutycycle of signal is adjusted according to first electric current.

2. flash generator module as claimed in claim 1, it is characterised in that when first electric current increases, the arteries and veins Rush the dutycycle increase of signal；When first electric current reduces, the dutycycle of the pulse signal reduces.

3. flash generator module as claimed in claim 1, it is characterised in that when first electric current is 10A, the arteries and veins The dutycycle for rushing signal is 55%-60%.

4. flash generator module as claimed in claim 1, it is characterised in that the protection circuit also includes a voltage detecting Circuit, the voltage detecting circuit is used to compare the tertiary voltage and a predetermined voltage, when the tertiary voltage is less than described During predetermined voltage, the voltage detecting circuit exports a detection signal and controls the pulse adjustment unit to export the pulse to be believed Number；When the tertiary voltage is more than or equal to the predetermined voltage, the voltage detecting circuit exports the detection signal simultaneously The pulse adjustment unit is controlled to stop the output pulse signal, so that protection circuit stops output second voltage.

5. flash generator module as claimed in claim 4, it is characterised in that the pulse modulation unit includes that starts End, a pulse signal output end, control unit and oscillator, wherein, start end is electrically connected with the voltage detection unit, is used for The detection signal is received, the pulse signal output end is used to export the pulse signal, and the oscillator is used to export one Self-oscillatory pulse signal, and by the self-excited oscillation pulse signal output to described control unit, described control unit The start end and oscillator are electrically connected with, for according to the detection signal and the self-excited oscillation pulse signal output pulse Signal, the self-excited oscillation pulse signal is identical with dutycycle with the frequency of the pulse signal.

6. flash generator module as claimed in claim 5, it is characterised in that the nor gate of described control unit one, it is described or A wherein input of not gate is electrically connected with the start end, receives the detection signal, and an input is electrically connected with institute in addition State oscillator and receive the self-excited oscillation pulse signal, the nor gate is believed according to detection signal with the self-excited oscillation pulse Number state be correspondingly formed the pulse signal.

7. flash generator module as claimed in claim 6, it is characterised in that the oscillator includes the first nor gate, the Two nor gates, the 3rd nor gate and frequency modulation unit, two inputs of first nor gate are directly in parallel, output end and institute The one of input for stating the second nor gate is electrically connected with, meanwhile, the output end of first nor gate and the frequency modulation list Unit is electrically connected with, and another input and the FM circuit of second nor gate are electrically connected with, and described second or non- The output end of door is electrically connected with the FM circuit, and two inputs of the 3rd nor gate are directly in parallel and with described the The output end of two nor gates is electrically connected with, and the output end of the 3rd nor gate is electrically connected with control unit, and described from exciting Pulse signal is swung to be transmitted to control unit from the output end of the 3rd nor gate, wherein, frequency modulation unit be used to adjusting it is described from The frequency of Induced Oscillation pulse signal.

8. flash generator module as claimed in claim 7, it is characterised in that the frequency modulation unit includes first resistor and First electric capacity, one end of the first resistor is electrically connected with first or non-two inputs, the other end be electrically connected with first or The output end of not gate, one end of first electric capacity is electrically connected with two inputs of first nor gate, other end electricity Property connection second nor gate output end.

9. flash generator module as claimed in claim 7, it is characterised in that the oscillator also includes that adjusts unit wide, The dutycycle for adjusting unit wide to be used to adjust the self-excited oscillation pulse signal, the tune unit wide includes second resistance, the Three resistance and the second electric capacity, two inputs of the second resistance with the second electric capacity successively from the 3rd nor gate are connected serially to The output end of the 3rd nor gate, the other end of the 3rd electric capacity is electrically connected with the output end of the 3rd nor gate, the described 3rd Resistance wherein one end is electrically connected with any one node between the second resistance and second electric capacity, and other end electrically connects Connect the input of disconnected frequency modulation unit in second nor gate.

10. flash generator module as claimed in claim 1, it is characterised in that the protection circuit also includes that a switch is single Unit and transformer unit, the switch element are electrically connected with the pulse adjustment unit, for according to the output of pulse signal Corresponding switching signal, the transformer unit carries out boosting inverter according to switching signal to first voltage, wherein, the switch Unit includes first switch and second switch parallel with one another, and the first switch is used for according to the arteries and veins with the second switch Rush the corresponding switching signal of signal output.

11. flash generator modules as claimed in claim 10, it is characterised in that the first switch is N with second switch Type metal oxide semiconductor, the grid of the first switch is directly electrically connected with pulse signal with the grid of the second switch Adjustment unit receives the pulse signal；The source electrode of the first switch is directly electrically connected to the source electrode of the second switch Earth terminal；The drain electrode of the first switch is directly electrically connected to the transformer unit with the drain electrode of the second switch, uses In the output switching signal.

12. flash generator modules as claimed in claim 10, it is characterised in that the transformer unit includes boosting transformation Device and an electric capacity, the step-up transformer first input end, the first output end, the second output end and the second control end, its In, the first input end receives the first voltage, and second control end is used to receive the switching signal；Described first Output end is used to export the alternating voltage produced according to first voltage sensing, described electric capacity one end with second output end Connection earth terminal, the other end is electrically connected with the first input end.

13. flash generator modules as claimed in claim 12, it is characterised in that the step-up transformer includes primary coil And secondary coil, the primary coil include first input pole, second input pole and the 3rd input pole, it is described first input extremely electricity Property connection first input end, the second input is extremely hanging to be set, and the 3rd input pole is electrically connected with second control end, described Secondary coil includes the first output stage and the second output stage, wherein, first output stage is electrically connected with the first output end, described Second output stage is electrically connected with second output end.

14. flash generator modules as claimed in claim 1, it is characterised in that the first voltage is carried by a battery modules For the voltage of the first voltage is 6.8-8.4V, and the voltage of the tertiary voltage is 320V-340V.

15. flash generator modules as claimed in claim 14, it is characterised in that the protection circuit also includes an energy storage mould Group, the second voltage charges to the energy storage module, and the charging voltage of the energy storage module is 320V-340V.

A kind of 16. flash lamp modules, including the flash generator module as described in claim 1-15 any one and a flash of light Lamp source, the flash light source is used for emergent ray, and the flash generator module is used to be powered for the flash light source.