CN202218052U - Rapid charging device possessing protective circuit - Google Patents
Rapid charging device possessing protective circuit Download PDFInfo
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- CN202218052U CN202218052U CN2011203260869U CN201120326086U CN202218052U CN 202218052 U CN202218052 U CN 202218052U CN 2011203260869 U CN2011203260869 U CN 2011203260869U CN 201120326086 U CN201120326086 U CN 201120326086U CN 202218052 U CN202218052 U CN 202218052U
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Abstract
The utility model belongs to a rapid charging device possessing a protective circuit. The rapid charging device is characterized in that the rapid charging device includes at least an EMC and surge current control circuit, a first rectifier and filter circuit, a signal-ended flyback DC/DC power converter, a secondary rectifier and filter circuit, a rapid charging circuit, and a signal sampling and protective circuit; a 220V alternating current input is electrically connected with the EMC and surge current control circuit; the EMC and surge current control circuit is electrically connected with the first rectifier and filter circuit to form a direct voltage of about 300V; a direct voltage output is electrically connected with the signal-ended flyback DC/DC power converter, and a high frequency alternating current output is generated via the signal-ended flyback DC/DC power converter; the high frequency alternating current output is electrically connected with the secondary rectifier and filter circuit; and the secondary rectifier and filter circuit is electrically connected with the rapid charging circuit. The rapid charging circuit possessing the protective circuit is rapid in charging speed, excellent in reliability, and small in change along with the factors, such as the input voltage, the environment temperature, and the like.
Description
Technical field
The utility model belongs to the quick charge device of being with protective circuit, is applicable to any place that needs quick charge, is particularly suitable for as highway RF visa card special charging device.
Background technology
Rechargeable battery is used very extensive in life, but often because charging is improper, and battery is died young too early.
In many cases; Rechargeable battery adopts jumbo lithium battery; Lithium battery like 2000mA/h needs quick charge, to satisfy the demand that product uses, under the quick charge situation; Guaranteeing that charging current steadily, does not receive the influence of input voltage and ambient temperature, is the problem that charging circuit need be examined filter.
Summary of the invention
The purpose of the utility model provides that charging rate is fast, good reliability, with the quick charge device of the little band protective circuit of factors vary such as input voltage and ambient temperature, be particularly suitable for as highway RF visa card special charging device.
The purpose of the utility model realizes like this; The quick charge device of band protective circuit; It is characterized in that: comprise EMC and surge current control circuit, a rectification and filter circuit, single-ended flyback DC/DC power inverter at least, secondary rectification and filter circuit, quick-charging circuit, signal sampling and protective circuit, 220V exchanges input and is electrically connected with EMC and surge current control circuit; EMC and surge current control circuit are electrically connected with a rectification and filter circuit; Form the direct voltage about 300V, direct voltage output is electrically connected with single-ended flyback DC/DC power inverter, forms high-frequency ac output through single-ended flyback DC/DC power inverter; High-frequency ac output is electrically connected with secondary rectification and filter circuit, is electrically connected with quick-charging circuit by secondary rectification and filter circuit.
Described quick-charging circuit is electrically connected with signal sampling and protective circuit; Signal sampling and protective circuit and single-ended flyback DC/DC power inverter be common constitute have overcurrent, the quick-charging circuit of overvoltage, overheated and under-voltage protection; Described single-ended flyback DC/DC power inverter comprises an adjusting transformer T2; Regulating transformer T2 has two groups of secondary outputs, first group of secondary output through behind the rectification circuit of the second level as charging circuit, supply the battery charging to use; The other end is electrically connected with the D end of PWM controller TOP245; Be serially connected with the diode D3 that voltage-stabiliser tube is connected with anti-phase, the capacitance-resistance loop that the output plus terminal of the diode D3 tie point that voltage-stabiliser tube is connected with anti-phase and a rectification and filter circuit is connected in series and is connect by resistance R 2 and capacitor C 3 at the output plus terminal of a rectification and filter circuit and the D end of PWM controller TOP245.
Described signal sampling and protective circuit comprise photoelectrical coupler, charge circuit sample circuit; The charge circuit sample circuit is to be made up of the luminous tube of voltage-stabiliser tube, current-limiting resistance R5, resistance R 6 and photoelectrical coupler serial connection; The charge circuit sample circuit is attempted by the output of charging circuit; The emitter of the photoelectric receiving tube of photoelectrical coupler is electrically connected with the control end C end of PWM controller TOP245; The control end C of TOP245 end is connected with the F terminal shortcircuit of TOP245, and between tie point and the earth-return and be connected to the loop that is connected in series of resistance R 4 and capacitor C 7, the serial connection loop of resistance R 4 and capacitor C 7 also connects a capacitor C 8.
A first group of secondary output and the elementary end of described adjusting transformer T2 have feedback capacity C4.
The output of described quick-charging circuit has two both positive and negative polarity contacts that supply the rechargeable battery charging; Sample resistance R6 is wherein arranged between negative contacts and the negative pole, and negative contacts is electrically connected with charge circuit sample circuit loop through diode D2 and resistance R 3 with the electric connection point of sample resistance R6.
Described feedback capacity C4 selects 2.2nF/1kV for use.
The utility model has the advantages that: the electric current that electric current, change in voltage or the environment that is caused by the charging circuit load causes, change in voltage feed back to the control end C of TOP245 through photoelectrical coupler, and the frequency of oscillation of regulating transformer T2 by TOP245 reaches the purpose of current stabilization, voltage stabilizing.Electric current, change in voltage that electric current, change in voltage or the environment that adopts the photoelectrical coupler feedback to be caused by load causes have been isolated a rectification and filter circuit fully; Between the control end C of TOP245 and negative supply, have less than the resistance of 10 Ω and the electrochemical capacitor that is connected in series; Eliminate the influence of control end C alternating voltage; And PWM controller and adjusting transformer T2 constitute have overcurrent, overvoltage, constant voltage outputting circuit overheated and under-voltage protection can export the required electric current of quick charge; Under the quick charge situation, can guarantee that charging current steadily, does not receive the influence of input voltage and ambient temperature.
Description of drawings
Below in conjunction with the embodiment accompanying drawing the utility model is described further:
Fig. 1 is the utility model embodiment schematic block circuit diagram.
Among the figure: 1, EMC and surge current control circuit; 2, a rectification and filter circuit; 3, single-ended flyback DC/DC power inverter; 4, secondary rectification and filter circuit; 5, quick-charging circuit; 6, battery; 7, signal sampling and protective circuit.
Embodiment
As shown in Figure 1; The quick charge device of band protective circuit; At least comprise: EMC and surge current control circuit 1, a rectification and filter circuit 2, single-ended flyback DC/DC power inverter 3; Secondary rectification and filter circuit 4, quick-charging circuit 5, signal sampling and protective circuit 7,220V exchanges input and is electrically connected with EMC and surge current control circuit 1, after EMC and surge current control circuit 1 protection, is electrically connected with a rectification and filter circuit 2 again; Form the direct voltage about 300V; Direct voltage output is electrically connected with single-ended flyback DC/DC power inverter 3, forms high-frequency ac output through single-ended flyback DC/DC power inverter 3, and high-frequency ac output is electrically connected with secondary rectification and filter circuit 4; Be electrically connected with quick-charging circuit 5 by secondary rectification and filter circuit 4, form required charging current the battery 6 that charge circuit is electrically connected is carried out quick charge.
Quick-charging circuit 5 loops are electrically connected with signal sampling and protective circuit 7; Signal sampling and protective circuit 7 and single-ended flyback DC/DC power inverter 3 be common constitute have overcurrent, the quick-charging circuit of overvoltage, overheated and under-voltage protection; Adjusting transformer T2 in the single-ended flyback DC/DC power inverter 3 has two groups of secondary outputs; First group of secondary output through behind the rectification circuit of the second level as charging circuit, supply battery 6 chargings to use.Second group of secondary output through third level rectification circuit after control end through sample circuit and PWM controller TOP245 be electrically connected to form overcurrent, overvoltage, the overheated and under-voltage protecting circuit of charging circuit; Sample circuit mainly is made up of photoelectrical coupler, charge circuit sample circuit; The charge circuit sample circuit is to be made up of the luminous tube of voltage-stabiliser tube, current-limiting resistance R5, resistance R 6 and photoelectrical coupler serial connection; The charge circuit sample circuit is attempted by the output of charging circuit; The emitter of the photoelectric receiving tube of photoelectrical coupler is electrically connected with the control end C end of PWM controller TOP245; The control end C of TOP245 end is connected with the F terminal shortcircuit of TOP245, connects between back and the ground voltage and is connected to the loop that is connected in series of resistance R 4 and capacitor C 7, and the serial connection loop of resistance R 4 and capacitor C 7 also connects a capacitor C 8.An elementary end of regulating transformer T2 is electrically connected with the output plus terminal of a rectification and filter circuit 2; The other end is electrically connected with the D end of PWM controller TOP245; Be serially connected with the diode D3 that voltage-stabiliser tube is connected with anti-phase, the capacitance-resistance loop that the output plus terminal of the diode D3 tie point that voltage-stabiliser tube is connected with anti-phase and a rectification and filter circuit 2 is connected in series and is connect by resistance R 2 and capacitor C 3 at the output plus terminal of a rectification and filter circuit 2 and the D end of PWM controller TOP245.
First a group of secondary output and an elementary end regulating transformer T2 have feedback capacity C4, select 2.2nF/1kV for use.Output at quick-charging circuit has two both positive and negative polarity contacts that supply the rechargeable battery charging; Sample resistance R6 is wherein arranged between negative contacts and the negative pole, and negative contacts is electrically connected with charge circuit sample circuit loop through diode D2 and resistance R 3 with the electric connection point of sample resistance R6.
In the utility model, the electric current that electric current, change in voltage or the environment that is caused by the charging circuit load causes, change in voltage are reached the purpose of current stabilization, voltage stabilizing through feeding back to the control end C of TOP245 by the frequency of oscillation of TOP245 adjusting transformer T2.Between the control end C of TOP245 and negative supply, have, eliminate control end C alternating voltage less than the resistance of 10 Ω and the electrochemical capacitor that is connected in series.
Claims (6)
1. be with the quick charge device of protective circuit; It is characterized in that: comprise EMC and surge current control circuit (1), a rectification and filter circuit (2), single-ended flyback DC/DC power inverter (3) at least; Secondary rectification and filter circuit (4), quick-charging circuit (5), signal sampling and protective circuit (7); 220V exchanges input and is electrically connected with EMC and surge current control circuit (1); EMC and surge current control circuit (1) are electrically connected with a rectification and filter circuit (2); Form the direct voltage about 300V, direct voltage output is electrically connected with single-ended flyback DC/DC power inverter (3), forms high-frequency ac output through single-ended flyback DC/DC power inverter (3); High-frequency ac output is electrically connected with secondary rectification and filter circuit (4), is electrically connected with quick-charging circuit (5) by secondary rectification and filter circuit (4).
2. the quick charge device of band protective circuit according to claim 1; It is characterized in that: described quick-charging circuit (5) is electrically connected with signal sampling and protective circuit (7); Described single-ended flyback DC/DC power inverter (3) comprises an adjusting transformer T2; Regulate transformer T2 two groups of secondary outputs are arranged; First group of secondary output is electrically connected with second level rectification circuit; The other end is electrically connected with the D end of PWM controller TOP245, is serially connected with the diode D3 that voltage-stabiliser tube is connected with anti-phase, the capacitance-resistance loop that the output plus terminal of a diode D3 tie point that voltage-stabiliser tube is connected with anti-phase and a rectification and filter circuit (2) is connected in series and is connect by resistance R 2 and capacitor C 3 at the output plus terminal of a rectification and filter circuit 3 and the D end of PWM controller TOP245.
3. the quick charge device of band protective circuit according to claim 1; It is characterized in that: described signal sampling and protective circuit (7) comprise photoelectrical coupler, charge circuit sample circuit; The charge circuit sample circuit is to be made up of the luminous tube of voltage-stabiliser tube, current-limiting resistance R5, resistance R 6 and photoelectrical coupler serial connection; The charge circuit sample circuit is attempted by the output of charging circuit; The emitter of the photoelectric receiving tube of photoelectrical coupler is electrically connected with the control end C end of PWM controller TOP245; The control end C of TOP245 end is connected with the F terminal shortcircuit of TOP245, and between tie point and the earth-return and be connected to the loop that is connected in series of resistance R 4 and capacitor C 7, the serial connection loop of resistance R 4 and capacitor C 7 also connects a capacitor C 8.
4. the quick charge device of band protective circuit according to claim 2 is characterized in that: first a group of secondary output and the elementary end of described adjusting transformer T2 have feedback capacity C4.
5. the quick charge device of band protective circuit according to claim 1; It is characterized in that: the output of described quick-charging circuit has two both positive and negative polarity contacts that supply the rechargeable battery charging; Sample resistance R6 is wherein arranged between negative contacts and the negative pole, and negative contacts is electrically connected with charge circuit sample circuit loop through diode D2 and resistance R 3 with the electric connection point of sample resistance R6.
6. the quick charge device of band protective circuit according to claim 4 is characterized in that: described feedback capacity C4 selects 2.2nF/1kV for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203260869U CN202218052U (en) | 2011-09-01 | 2011-09-01 | Rapid charging device possessing protective circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203260869U CN202218052U (en) | 2011-09-01 | 2011-09-01 | Rapid charging device possessing protective circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202218052U true CN202218052U (en) | 2012-05-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203260869U Expired - Lifetime CN202218052U (en) | 2011-09-01 | 2011-09-01 | Rapid charging device possessing protective circuit |
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| Country | Link |
|---|---|
| CN (1) | CN202218052U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102315679A (en) * | 2011-09-01 | 2012-01-11 | 河南省交通科学技术研究院有限公司 | Rapid charging circuit with protection circuit |
| CN102709981A (en) * | 2012-06-07 | 2012-10-03 | 广州益维电动汽车有限公司 | Energy-lossless equalizing charging device for series lithium ion battery pack |
| CN109114686A (en) * | 2018-10-16 | 2019-01-01 | 陈小得 | Air purifier |
| CN109883801A (en) * | 2019-03-01 | 2019-06-14 | 蔡长征 | Clamping device for medical treatment detection device |
-
2011
- 2011-09-01 CN CN2011203260869U patent/CN202218052U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102315679A (en) * | 2011-09-01 | 2012-01-11 | 河南省交通科学技术研究院有限公司 | Rapid charging circuit with protection circuit |
| CN102315679B (en) * | 2011-09-01 | 2014-07-09 | 河南省交通科学技术研究院有限公司 | Rapid charging circuit with protection circuit |
| CN102709981A (en) * | 2012-06-07 | 2012-10-03 | 广州益维电动汽车有限公司 | Energy-lossless equalizing charging device for series lithium ion battery pack |
| CN109114686A (en) * | 2018-10-16 | 2019-01-01 | 陈小得 | Air purifier |
| CN109883801A (en) * | 2019-03-01 | 2019-06-14 | 蔡长征 | Clamping device for medical treatment detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120509 |