CN209730880U - A kind of high-power constant-current charging power - Google Patents
A kind of high-power constant-current charging power Download PDFInfo
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- CN209730880U CN209730880U CN201920671110.9U CN201920671110U CN209730880U CN 209730880 U CN209730880 U CN 209730880U CN 201920671110 U CN201920671110 U CN 201920671110U CN 209730880 U CN209730880 U CN 209730880U
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Abstract
The utility model discloses a kind of high-power constant-current charging powers, include: EMI filter module, AC-DC full-bridge rectifier filter module, DC-AC high-frequency resonant module, transformer module, full-wave rectification block and at least one be connected to the single tube constant-current charge module of full-wave rectification block output end, EMI filter module connects AC-DC full-bridge rectifier filter module, the input terminal of the output connection DC-AC high-frequency resonant module of AC-DC full-bridge rectifier filter module, the output end of DC-AC high-frequency resonant module connect full-wave rectification block by transformer module.The utility model uses DC-AC high-frequency resonant module, and switching loss is smaller, therefore improves switching frequency on the basis of keeping efficient, it will be able to reduce the volume of device, increase power density；The input terminal of the output connection DC-AC high-frequency resonant module of the utility model AC-DC full-bridge rectifier filter module, the output end of the DC-AC high-frequency resonant module connect full-wave rectification block by transformer module, can be realized multiple rechargeable batteries while charging.
Description
Technical field
The utility model relates to charge power supply technical field more particularly to a kind of high-power constant-current charging powers.
Background technique
Nickel-cadmium cell is a kind of direct current supply battery, repeatable 500 times or more the charge and discharge of nickel-cadmium cell, economy and durability.
Its internal power that resists is small, both internal resistance very little, and voltage change very little when can provide high current for load, and discharge is a kind of non-
Often ideal direct current supply battery.Nickel-cadmium cell had many advantages, such as such as high life, excellent defence line performance and powerful
Charging performance and a wide range of thermal adaptability, so that it is widely used.Such as outgoing shooting program or news interview, generally make
Can, with portable camera-shooting and recording device, portable camera-shooting and recording device just needs to match battery, efficiently charge for multiple Ni-Cr batteries,
With guarantee continuously work long hours when shooting everything goes well with your work carry out it is most important.
And be only capable of charging for the Ni-Cr battery of negligible amounts in the prior art mostly, it is not able to satisfy outdoor equipment and makees for a long time
The requirement of charging is concentrated after industry, therefore how making a fairly large number of Ni-Cr battery while filling for high-power stabilization constant current output is provided
The charge power supply of electricity, is this field problem to be solved.
Utility model content
The technical problems to be solved in the utility model is how to provide high-power stabilization constant current to export, and efficiently solves number
The problem of measuring more Ni-Cr battery while charging.
To realize the above-mentioned technical purpose, the utility model uses following technical scheme.
There is provided a kind of high-power constant-current charging power, comprising: EMI filter module, AC-DC full-bridge rectifier filter module, DC-
AC high-frequency resonant module, transformer module, full-wave rectification block and at least one be connected to full-wave rectification block output end
Single tube constant-current charge module, the EMI filter module connect AC-DC full-bridge rectifier filter module, AC-DC full-bridge rectifier filter mould
The input terminal of the output connection DC-AC high-frequency resonant module of block, the output end of the DC-AC high-frequency resonant module pass through transformer
Module connects full-wave rectification block.
Further, the EMI filter module includes capacitor C2, differential mode inductance L1, L3, and input terminal is separately connected differential mode electricity
Feel shunt capacitance C2 between one end and input terminal of L1, L3, the other end shunt capacitance C4 of differential mode inductance L1, L3, capacitor
The series circuit of both ends the shunt capacitance C1 and capacitor C6 of C4, capacitor C1 and the concatenated intermediate node of capacitor C6 connect ground GND,
And the other end of differential mode inductance L1, L3 connect common mode inductance L2, and the output end of the common mode inductance L2 connects AC-DC full-bridge
Rectification filtering module.
Further, DC-AC high-frequency resonant module includes full-bridge DC-AC conversion module and LLC resonance circuit.
Further, the single tube constant-current charge module includes fuse, voltage-stabiliser tube, resistance R10, NPN transistor, resistance
R2, full-wave rectification block output connect one end of resistance R10, the yin of the other end connection voltage-stabiliser tube of resistance R10 by fuse
Pole, the anode connection ground GND of voltage-stabiliser tube, the base stage of the cathode connection NPN transistor of voltage-stabiliser tube, the emitter of NPN transistor are logical
Resistance R2 connection GND is crossed, connects battery to be charged between the collector and fuse of NPN transistor.
Still further, the series circuit of both ends parallel resistance R1 and LED in resistance R2.
Resistance R2 passes through one end of switch S1 connection resistance R7, and the other end of resistance R7 is connected to GND.
Advantageous effects acquired by the utility model:
1. the utility model uses DC-AC high-frequency resonant module, switching loss is smaller, therefore is keeping efficient basis
Upper raising switching frequency, it will be able to reduce the volume of device, increase power density；The utility model AC-DC full-bridge rectifier filter
The input terminal of the output connection DC-AC high-frequency resonant module of module, the output end of the DC-AC high-frequency resonant module pass through transformation
Device module connects full-wave rectification block, can be realized multiple rechargeable batteries while charging；
2. the utility model has charging indication, the break-make situation of charging circuit can be shown；
3. charging current is adjusted in the utility model, the scope of application is wider.
Detailed description of the invention
Fig. 1 is the principles of the present invention structural block diagram；
Fig. 2 is the utility model specific embodiment EMI filter module circuit diagram；
Fig. 3 is the utility model specific embodiment DC-AC high-frequency resonant module circuit schematic；
Fig. 4 is the utility model specific embodiment single tube constant-current charge module circuit schematic.
Specific embodiment
The utility model is further described with reference to the accompanying drawing.Following embodiment is only used for clearly illustrating this
The technical solution of utility model, and cannot be used as a limitation the limitation protection scope of the utility model.
Many details are explained in the following description in order to fully understand the utility model, but this is practical new
Type can also be implemented using other than the one described here other way, and those skilled in the art can be without prejudice to this reality
With doing similar popularization in the case where novel intension, therefore the utility model is not limited by the specific embodiments disclosed below.
Fig. 1 is the principles of the present invention structural block diagram；Fig. 1 shows a kind of high-power constant-current charging power, comprising:
EMI filter module, AC-DC full-bridge rectifier filter module, DC-AC high-frequency resonant module, transformer module, full-wave rectification block with
And at least one is connected to the single tube constant-current charge module of full-wave rectification block output end, the EMI filter module connects AC-DC
Full-bridge rectifier filter module, the input terminal of the output connection DC-AC high-frequency resonant module of AC-DC full-bridge rectifier filter module, institute
The output end for stating DC-AC high-frequency resonant module connects full-wave rectification block by transformer module.
Fig. 2 is the utility model specific embodiment EMI filter module circuit diagram；Electromagnetic interface filter main function is filter
Except interference of the high-frequency impulse to power supply of extraneous power grid, while also functioning to and reducing Switching Power Supply itself to extraneous electromagnetic interference.
Actually its characteristic for being sharp inductance and capacitor allows frequency to be that the alternating current of 50Hz or so passes through filter, but high
It is filtered out in the High-frequency Interference clutter of 50Hz or more by filter, so electromagnetic interface filter is sometimes referred to as low-pass filter its meaning is,
Low frequency can pass through, and high frequency is then filtered out.Fig. 2 shows EMI filter circuits directly to contact with power grid, and effect is outside filtering out
The burst and High-frequency Interference of portion's exchange input, and the electromagnetic interference of Switching Power On Electric Net is also reduced, main includes altogether
Two modules of mould and differential mode.Wherein capacitor C4 plays the role of differential mode filter capacitor, and capacitor C1 and C6 play common mode filtering
Differential mode choke coil can be used in the effect of capacitor, differential mode inductance, and common mode choke can be used in common mode inductance.
Fig. 3 is the utility model specific embodiment DC-AC high-frequency resonant module circuit schematic；Fig. 3 shows DC-AC high
Frequency resonance modules include full-bridge DC-AC conversion module and LLC resonance circuit.LLC resonance can be realized former in full-load range
While switching device no-voltage open (ZVS) and it is secondary while rectifier diode zero-current switching (ZCS), due to switching loss compared with
It is small, therefore switching frequency is improved on the basis of keeping efficient, it will be able to reduce the volume of device, increases power density.Institute
Full-bridge DC-AC conversion module connection LLC resonance circuit is stated, resonance circuit here can filter out DC-AC conversion module output side
Higher hamonic wave in wave voltage can provide Sofe Switch condition also for power switch.LLC resonance circuit includes the controller of MOSFET
(not shown in FIG.), for changing with load and changing working frequency tune with four MOSFET of particular duty cycle driven
Save output voltage.It is the prior art that controller, which drives the MOSFET in LLC resonance circuit, is not repeated herein.
Fig. 4 is the utility model specific embodiment single tube constant-current charge module circuit schematic.Fig. 4 shows the single tube
Constant-current charge module includes fuse, voltage-stabiliser tube, resistance R10, NPN transistor, resistance R2, and full-wave rectification block output passes through guarantor
One end of dangerous silk connection resistance R10, the cathode of the other end connection voltage-stabiliser tube of resistance R10, the anode connection ground GND of voltage-stabiliser tube,
The base stage of the cathode connection NPN transistor of voltage-stabiliser tube, the emitter of NPN transistor pass through resistance R2 connection GND, NPN transistor
Collector and fuse between connect battery to be charged.NPN transistor mentions constant current effect in Fig. 4, and perseverance Liu Zhi has surely
Pressure pipe and resistance R2 are determined, it is preferable that voltage-stabiliser tube selects 5V, resistance R2 to take 30~60 Europe, and charging current is about 50~110mA.
The circuit can be to No. 5 nickel-cadmium cell chargings of 1~4 section, and the charging time is 10~12 hours.Transistor VT1 can use 3DD15 or DS11
(plastic packaging) power tube, when installation, VT1 Guan Yingjia radiator.The utility model increases in the input terminal of single tube constant-current charge module
Fuse is more than that fuse nominal parameter disconnects when short-circuit conditions occur for charging module.It is filled since the utility model does not add
Electric control circuit, when use, should grasp the charging time, to guarantee safe charging.
Further, in order to indicate the connection situation of charging circuit, in the string of both ends the parallel resistance R1 and LED of resistance R2
Join circuit, R3 can use 200~500 Europe, and LED forms charging indication, connects rechargeable battery, LED will shine；If
LED does not shine, and illustrates battery poor contact.
Still further, in a particular embodiment, resistance R2 passes through switch S1 connection resistance R7 in order to adjust charging current
One end, the other end of resistance R7 is connected to GND.It is switched when disconnecting, resistance R2 determines the size of charging current, when closing
The parallel resistance of switch, resistance R2 and resistance R7 determine the size of charging current.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without deviating from the technical principle of the utility model, several improvement and deformations can also be made, these change
It also should be regarded as the protection scope of the utility model into deformation.
Claims (6)
1. a kind of high-power constant-current charging power characterized by comprising EMI filter module, AC-DC full-bridge rectifier filter mould
Block, DC-AC high-frequency resonant module, transformer module, full-wave rectification block and at least one to be connected to full-wave rectification block defeated
The single tube constant-current charge module of outlet, the EMI filter module connect AC-DC full-bridge rectifier filter module, AC-DC full-bridge rectification
The input terminal of the output connection DC-AC high-frequency resonant module of filter module, the output end of the DC-AC high-frequency resonant module pass through
Transformer module connects full-wave rectification block.
2. high-power constant-current charging power according to claim 1, which is characterized in that the EMI filter module includes electricity
Holding C2, differential mode inductance L1, L3, input terminal is separately connected shunt capacitance C2 between one end and input terminal of differential mode inductance L1, L3,
The series circuit of both ends the shunt capacitance C1 and capacitor C6 of other end the shunt capacitance C4, capacitor C4 of differential mode inductance L1, L3, electricity
Hold C1 and connect ground GND with the concatenated intermediate node of capacitor C6, and the other end of differential mode inductance L1, L3 connect common mode inductance
The output end of L2, the common mode inductance L2 connect AC-DC full-bridge rectifier filter module.
3. high-power constant-current charging power according to claim 1, which is characterized in that DC-AC high-frequency resonant module includes
Full-bridge DC-AC conversion module and LLC resonance circuit.
4. high-power constant-current charging power according to claim 1, which is characterized in that the single tube constant-current charge module packet
Fuse, voltage-stabiliser tube, resistance R10, NPN transistor, resistance R2 are included, full-wave rectification block output connects resistance by fuse
One end of R10, the cathode of the other end connection voltage-stabiliser tube of resistance R10, the anode connection ground GND of voltage-stabiliser tube, the cathode of voltage-stabiliser tube
The base stage of NPN transistor is connected, the emitter of NPN transistor passes through resistance R2 connection GND, the collector of NPN transistor and guarantor
Battery to be charged is connected between dangerous silk.
5. high-power constant-current charging power according to claim 4, which is characterized in that in the both ends parallel resistance of resistance R2
The series circuit of R1 and LED.
6. high-power constant-current charging power according to claim 4, which is characterized in that resistance R2 passes through switch S1 connection electricity
One end of R7 is hindered, the other end of resistance R7 is connected to GND.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920671110.9U CN209730880U (en) | 2019-05-10 | 2019-05-10 | A kind of high-power constant-current charging power |
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| CN201920671110.9U CN209730880U (en) | 2019-05-10 | 2019-05-10 | A kind of high-power constant-current charging power |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113206598A (en) * | 2021-06-09 | 2021-08-03 | 上海空间电源研究所 | Series resonant constant-current charging power supply |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113206598A (en) * | 2021-06-09 | 2021-08-03 | 上海空间电源研究所 | Series resonant constant-current charging power supply |
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