CN100341225C - Intelligent type full-automatic charger with short circuit protection - Google Patents
Intelligent type full-automatic charger with short circuit protection Download PDFInfo
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- CN100341225C CN100341225C CNB2005102004489A CN200510200448A CN100341225C CN 100341225 C CN100341225 C CN 100341225C CN B2005102004489 A CNB2005102004489 A CN B2005102004489A CN 200510200448 A CN200510200448 A CN 200510200448A CN 100341225 C CN100341225 C CN 100341225C
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- charging module
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- charger
- short circuit
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Abstract
The present invention relates to an intelligent type full-automatic charger with short circuit protection, which comprises a controllable charge module and an input end, an output end and a power drive signal blocking end thereof. The present invention is characterized in that a precharge circuit is composed of a resistor R1, a diode D1, an electrochemical capacitor C1 and a resistor R2; a zero voltage detecting circuit in an output loop is composed of a resistor R3 and a photocoupling integrated circuit IO, and can form the intelligent type full-automatic charger with short circuit protection with any general thyristor or switch power supply type charger. The present invention has the advantages that short circuit current does not need to be detected, an emergency power supply is effectively protected without manual reset, etc.
Description
(1) technical field
The present invention relates to a kind of automatic charger, be specifically related to a kind of automatic charger with short-circuit protection.
(2) background technology
Present many charger major loop short-circuit protections all are the cut-off type short-circuit protections; it is generally formed by current detection circuit, shaping circuit and triggering lockout circuit; but important place is fire-fighting emergency power supply (EPS) particularly, does not allow to use the charger of this class cut-off type short-circuit protection.This short-circuit protection has following shortcoming: major loop must form short circuit current earlier and just can be detected; and then block the main circuit power device, at this moment, the main circuit power device has been subjected to the impact of short circuit current; can bring certain fatigue damage to power device, and have the cumulative effect generation.The cut-off type short-circuit protection circuit must be done manually after cancelling short circuit and reset in addition, just can resume work from new starting charger, and this is that the GB17945-2000 fire-fighting emergency power supply is abstained from charger most.
(3) summary of the invention
The objective of the invention is to; at the above-mentioned shortcoming of fire-fighting emergency power supply (EPS) and other universal reserve emergency power supply, provide and a kind ofly need not detect short circuit current, before transcient short circuit time main circuit power device does not form short circuit current, promptly be blocked close thereby power device can not be subjected to short circuit current impact, emergency power supply is effectively protected and the intelligent type full-automatic charger of band short-circuit protection that need not manual reset.
The objective of the invention is to be achieved through the following technical solutions; specifically comprise controllable type charging module and input thereof; output and power drive signal block end; an input that it is characterized in that said charging module links by the positive pole of resistance R 1 with diode D1; an output of the negative pole of diode D1 and charging module links; another input of said charging module links by resistance R 2 another output with charging module; the output two ends of said charging module are connected with electrochemical capacitor C1; an output of one end of resistance R 3 and charging module links; the input of its other end and photoelectricity coupling integrated circuit IO links; another input of photoelectricity coupling integrated circuit IO and another output of charging module link; the output of photoelectricity coupling integrated circuit and the power drive signal of charging module block end and link, and each device is formed the intelligent type full-automatic charger of being with short-circuit protection jointly.
Main contribution of the present invention is to have provided by what photoelectricity coupling integrated circuit and resistance capacitance etc. were formed to be with precharge " 0 " voltage detecting circuit; according to connected mode of the present invention; this circuit can be used for any existing charger and makes short-circuit protection, forms the intelligent type full-automatic charger with 1 short-circuit protection.The practical application effect of this circuit is splendid, has played the effect of former imagination fully.Specifically; the present invention has added the pre-charge circuit is made up of resistance R 1, diode D1, electrochemical capacitor C1, resistance R 2 and by resistance R 3, photoelectricity output loop " 0 " voltage detecting circuit that integrated circuit IO forms that is coupled on existing charger, it and any universal controllable silicon or type switching power charger all can be formed the intelligent type full-automatic charger of being with short-circuit protection.Owing to be dormancy formula protection, be " 0 " at guard mode charger output loop electric current, so can unrestrictedly keep this state, and can not damage any device, also can not generate heat, the short circuit state of resuming work is automatically cancelled in wait constantly.As long as it is not " 0 " voltage that optocoupler detects the charger output loop, promptly can automatically terminate the blockade of the power drive signal of charger, charger just recovers operate as normal automatically like this, does not need any manual reset.
The present invention has need not detect short circuit current, before transcient short circuit time main circuit power device does not form short circuit current, promptly be blocked close thereby power device can not be subjected to short circuit current impact, emergency power supply is effectively protected and need not manual reset etc. advantage.
(4) description of drawings
Fig. 1 is a circuit theory schematic diagram of the present invention;
Fig. 2 is a structural representation of the present invention.
(5) embodiment
Below in conjunction with specific embodiment the present invention is described in further detail.
Fig. 1 is a circuit theory schematic diagram of the present invention, comprise that controllable type charging module 7 and input 1,2 thereof, output 3,4 and power drive signal block end 5,6, said controllable type charging module can adopt universal (as the MSDC series) controllable silicon or the type switching power charger of any model.An input 1 of said charging module links by the positive pole of resistance R 1 with diode D1; an output 3 of the negative pole of diode D1 and charging module links; another input 2 of said charging module links by resistance R 2 another output 4 with charging module; the output 3 of said charging module; 4 two ends are connected with electrochemical capacitor C1; an output 3 of one end of resistance R 3 and charging module links; the input a of its other end and photoelectricity coupling integrated circuit IO links; another input b of photoelectricity coupling integrated circuit IO and another output 4 of charging module link; the output c of photoelectricity coupling integrated circuit; the power drive signal of d and charging module blocks end 5; 6 link, and above-mentioned device is formed the intelligent type full-automatic charger of being with short-circuit protection jointly.In the above-mentioned device, resistance R 1, diode D1, electrochemical capacitor C1 and resistance R 2 are formed pre-charge circuit; Resistance R 3, photoelectricity coupling integrated circuit IO form output loop " 0 " voltage detecting circuit.
Operation principle of the present invention is as follows: according to Ohm's law; when the short circuit of charger output loop; its impedance must be approximately equal to " 0 "; so the voltage of its output also must be approximately equal to " 0 "; make " 0 " voltage detecting and isolate output " 0 " voltage signal by optocoupler; be used to block the power drive signal of charger; as long as charger output loop short circuit; the voltage of two ends also must be approximately equal to " 0 "; then the power drive signal of charger is blocked all the time, and charger is in the Sleep protection state all the time.This is that so the power drive signal of charger is blocked, charger does not have output, is in the Sleep protection state all the time because resistance R 1, diode D1, resistance R 3 can't provide input current to the photoelectricity integrated circuit IO that is coupled, and the output of IO presents high-impedance state.In case cancel short circuit, pre-charge circuit can be done precharge to the filter capacitor C1 of charger output loop at once, and slowly sets up output end voltage.As long as it is not " 0 " voltage that optocoupler detects the charger output loop, promptly can automatically terminate the blockade of the power drive signal of charger, charger just recovers operate as normal automatically like this, does not need any manual reset.Owing to be dormancy formula protection, be " 0 " at guard mode charger output loop electric current, so can unrestrictedly keep down, and do not damage any device, also can not generate heat, the short circuit state of resuming work is automatically cancelled in moment wait.The invention has the beneficial effects as follows that not forming short circuit current at transcient short circuit time main circuit power device has closed with regard to being blocked; so power device can not be subjected to the impact injury of short circuit current; be very beneficial for the protection of power device; saved simultaneously traditional manual reset again; therefore, it is a kind of short-circuit protection truly.
As a kind of specific embodiment, components and parts of the present invention can adopt following specifications and models:
Diode D1 1N4007
Light lotus root IO 4N32
Electrochemical capacitor C1 CD294-470u/450v (105 ℃)
Charging module CD 600V/10A
In force, every and above-mentioned specifications and models corresponding components and parts general, that have interchangeability all can be used as the present invention's selected components and parts when specifically implementing.
Fig. 2 is a structural representation of the present invention, as can be seen from Figure the mutual alignment between each components and parts.
Claims (1)
1. intelligent type full-automatic charger with short-circuit protection; comprise controllable type charging module (7) and input (1 thereof; 2); output (3; 4) and the power drive signal block end (5; 6); an input (1) that it is characterized in that said charging module links by the positive pole of first resistance (R1) with diode (D1); an output (3) of the negative pole of diode (D1) and charging module links; another input (2) of said charging module links by second resistance (R2) another output (4) with charging module; the output (3 of said charging module; 4) two ends are connected with electrochemical capacitor (C1); an output (3) of one end of the 3rd resistance (R3) and charging module links; an input (a) of its other end and photoelectricity coupling integrated circuit (IO) links; another input (b) of photoelectricity coupling integrated circuit (IO) links with another output (4) of charging module; output (the c of photoelectricity coupling integrated circuit; d) the power drive signal with charging module blocks end (5; 6) link, each device is formed the intelligent type full-automatic charger of being with short-circuit protection jointly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005102004489A CN100341225C (en) | 2005-08-03 | 2005-08-03 | Intelligent type full-automatic charger with short circuit protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005102004489A CN100341225C (en) | 2005-08-03 | 2005-08-03 | Intelligent type full-automatic charger with short circuit protection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1734880A CN1734880A (en) | 2006-02-15 |
| CN100341225C true CN100341225C (en) | 2007-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005102004489A Expired - Fee Related CN100341225C (en) | 2005-08-03 | 2005-08-03 | Intelligent type full-automatic charger with short circuit protection |
Country Status (1)
| Country | Link |
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| CN (1) | CN100341225C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI573364B (en) * | 2015-02-11 | 2017-03-01 | Silergy Semiconductor Tech (Hangzhou) Ltd | Self - adjusting input current limit charger and its control method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06141476A (en) * | 1992-10-23 | 1994-05-20 | Sony Corp | Protective circuit of charger |
| CN2382157Y (en) * | 1997-06-02 | 2000-06-07 | 高文 | Automatic electric charger |
| JP2004194394A (en) * | 2002-12-10 | 2004-07-08 | Matsushita Electric Ind Co Ltd | Switching power supply unit |
-
2005
- 2005-08-03 CN CNB2005102004489A patent/CN100341225C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06141476A (en) * | 1992-10-23 | 1994-05-20 | Sony Corp | Protective circuit of charger |
| CN2382157Y (en) * | 1997-06-02 | 2000-06-07 | 高文 | Automatic electric charger |
| JP2004194394A (en) * | 2002-12-10 | 2004-07-08 | Matsushita Electric Ind Co Ltd | Switching power supply unit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI573364B (en) * | 2015-02-11 | 2017-03-01 | Silergy Semiconductor Tech (Hangzhou) Ltd | Self - adjusting input current limit charger and its control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1734880A (en) | 2006-02-15 |
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