CN1322651C - Plug-and-play charger and its charge control method - Google Patents
Plug-and-play charger and its charge control method Download PDFInfo
- Publication number
- CN1322651C CN1322651C CNB021151245A CN02115124A CN1322651C CN 1322651 C CN1322651 C CN 1322651C CN B021151245 A CNB021151245 A CN B021151245A CN 02115124 A CN02115124 A CN 02115124A CN 1322651 C CN1322651 C CN 1322651C
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- gate
- resistance
- controlled switch
- circuit
- charging module
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Abstract
The present invention relates to a hot plug charge device and a charge control method thereof. The hot plug charge device comprises at least two charge modules and electrolytic capacitors connected in parallel between the output ends in the charge modules, wherein a hot plug protective circuit formed by the parallel connection of a controllable switch circuit and a buffer network is connected in series in the output branch circuits of the charge modules. In the present invention, the hot plug protective circuit formed by the parallel connection of the controllable switch circuit and the buffer network is skillfully connected in series in the output branch circuits of the charge modules, and the controllable switch circuit is fully used for preventing a current from flowing in double directions so as to effectively avoid charger damage caused by the impact of a heavy current.
Description
Technical field
The present invention relates to field of power electronics, particularly relate to a kind of field of power supplies that connects battery and charge the battery that is applicable to, as the power supply system for communications, ups system, the direct current of perhaps a plurality of rectification module parallel connections output regulated power supply system etc.
Background technology
Battery charger is widely used in fields such as automobile, household electrical appliances, communication power supply, computer power supply, and in existing charger circuit and direct current output module circuit, output port generally is provided with filter circuit and other devices such as electrochemical capacitor.As shown in Figure 1: in the circuit of this structure, when charger was connected with battery, because the voltage and the cell voltage of charger are not necessarily identical, can cause battery to charger inside electrolysis capacitor discharge this moment, and electrochemical capacitor is produced heavy current impact; During a plurality of direct current output DC source module parallel operation, the heavy current impact phenomenon that causes owing to the voltage difference between the module also can appear because when increasing rectification module when move in system.This heavy current impact can cause that connector produces electric arc and burns or electrochemical capacitor is caused damage.At the problems referred to above, existing solution has:
(1) series diode outside charge circuit; as shown in Figure 2, the circuit of this structure is quoted simply, and diode D can block battery current and charge to capacitor C; protection charger internal circuit in plug process electric current that is not hit damages, but the shortcoming of sort circuit is:
1) because the conduction voltage drop of diode D is more than the 0.7V, therefore big electric current can cause very big loss on diode D, reduce the efficient of charger;
2) diode D causes that the indexs such as load regulation of charger reduce, the power reguirements of the high-performance power-supply system that is difficult to satisfy the demand;
3) diode D isolates the noise indexs such as output port peak value cause charger and increases, and produces and disturbs being powered equipment, is difficult to satisfy the power demands of communication equipment etc.
(2) at the circuit of output series relay contact, as shown in Figure 3, the circuit of this structure is relay K of series connection in output loop, and this relay K can be after the work of charger main circuit, output voltage rises to adhesive again behind the rated output voltage, thereby reduces rush of current.But sort circuit still has following shortcoming:
1, impulse current can not be eliminated fully, because cell voltage can not be identical with charger voltage, so impulse current is still bigger.
Summary of the invention
The objective of the invention is problem, a kind of plug-and-play charger that can effectively avoid heavy current impact is provided at above-mentioned existence.On this basis, further purpose of the present invention provides a kind of plug-and-play charger that prevents the battery reversal connection that can prevent effectively that the charger that causes because of battery reversal connection or rectification module reversal connection or rectification module from damaging.
Technical scheme of the present invention is achieved in that
A kind of plug-and-play charger; comprise at least more than one charging module and be connected in parallel on electrochemical capacitor between the charging module output, it is characterized in that being in series with a hot plug protective circuit that composes in parallel by gate-controlled switch circuit and buffering network in the output branch road of charging module.Wherein said electrochemical capacitor is positioned at the charging module side of described hot plug protective circuit; Described buffer network can be made up of first single resistance or single inductance in the output branch road that is series at charging module.For the charger of effectively avoiding causing because of battery reversal connection or rectification module reversal connection damages, above-mentioned buffer network also can be to be composed in series by diode, the series connection of first resistance or by diode, inductance.Because ohmically electric current equals voltage divided by resistance, therefore single resistance can play the effect of limit circuit electric current; Because the electric current on the single inductance can not suddenly change, when using inductance, risings of starting from scratch of the electric current on the inductance charge for the inside modules electrochemical capacitor, so inductance also can play the effect of current buffering.Series diode mainly is that the single-phase of restriction electric current flowed on inductance or the resistance, and above-mentioned current buffering effect still exists.Above-mentioned gate-controlled switch circuit is made up of gate-controlled switch and pressure differential detection control circuit, wherein the input of gate-controlled switch is connected with an end of charging module and battery or load respectively with output, two inputs of pressure differential detection control circuit are connected to the input and the output of gate-controlled switch, the output of pressure differential detection control circuit is connected with a control end of gate-controlled switch, and another control end of gate-controlled switch is connected with a power supply.
At this moment, the charge control method of plug-and-play charger of the present invention and operation principle are as follows:
The hot plug protective circuit that electric gate-controlled switch circuit of series connection and buffering network compose in parallel in a wherein output branch road of charging module; In the moment that charging module is connected with battery or load, not adhesive of gate-controlled switch; After installing charging module, the rectification module that battery or other are being worked charges to the inner electrochemical capacitor of charging module by buffer network; When the pressure reduction that detects cell voltage and charging module builtin voltage when the pressure reduction control circuit was worth less than certain, control gate-controlled switch closure started charging module work, to battery charge or power to the load.Wherein the closure condition of gate-controlled switch also can be to detect the voltage at gate-controlled switch two ends less than certain less numerical value, or the time-delay of a setting-up time.The definite needs of delay time guarantees that during this period of time buffer network fully charges to electrochemical capacitor, and the voltage difference at two ends, gate-controlled switch contact is enough little, and closed gate-controlled switch can not cause big rush of current.
The present invention makes full use of the two-way flow that the gate-controlled switch circuit is blocked electric current owing to be in series with the hot plug protective circuit that is composed in parallel by gate-controlled switch circuit and buffering network dexterously in charging module output branch road.In the moment that moment that charging module is connected with battery or rectification module are connected in parallel, gate-controlled switch is not closed, thereby can not produce heavy current impact, and can charge to the charging module internal circuit by buffer network, up to pressure differential detection electric circuit inspection closed gate-controlled switch and start charging module work just when the pressure reduction of battery and charging module inside reaches a certain value, to battery charge or power to the load; Perhaps pass through certain time-delay, wait for when the voltage of inside modules is identical with external voltage closed gate-controlled switch and start charging module work.
Describe basic composition of the present invention and operation principle in detail below in conjunction with accompanying drawing:
Description of drawings
Fig. 1 is the prior art constructions schematic diagram;
Fig. 2 is the structural representation of existing improvement project I;
Fig. 3 is the structural representation of existing improvement project II;
Fig. 4 is the structural representation of embodiment of the present invention I;
Fig. 5 is the structural representation of embodiment of the present invention II.
Embodiment
As shown in Figure 4, but the present invention includes the rectification module of charging module and battery or parallel operation; Between the charging module output, be parallel with electrochemical capacitor.A wherein output that is characterized in charging module is in series with one in the branch road by the gate-controlled switch circuit with cushion the hot plug protective circuit that group of networks becomes.Wherein said electrochemical capacitor is positioned at the charging module side of described hot plug protective circuit; Described buffer network can be to be connected in the positive pole output branch road of charging module, also can be to be connected in the negative pole output branch road of charging module.When its positive pole that is connected on charging module is exported in the branch road, use single resistance the one R
1Simple as the buffer network circuit, first resistance R
1Resistance choose and can a lot of selections be arranged according to the capacitance size, its value guarantees the impulse current of the impulse current of electrochemical capacitor and connector in allowed band, and guarantees first resistance R
1Can do not damaged by impulse current; Allowing the bigger occasion of impulse current, can choose inductance L
1As buffer network.For the circuit that need to be applied to battery reversal connection or rectification module reverse connecting protection, buffer network need be selected the mode of resistance and diode series connection or inductance and diode series connection for use, and control circuit also needs to select for use the circuit of pressure differential detection.When battery reversal connection or rectification module reversal connection; because the detected pressure reduction of pressure differential detection control circuit is always very big; make the gate-controlled switch can't be closed; reach the charger of protection reversal connection or the effect of rectification module; the buffer network that is in series with diode simultaneously can be blocked reverse current, and protection charger or rectification module are not damaged.If buffer network need be selected resistance for use, then resistance need choose bigger, to guarantee flowing through the electric current of electrochemical capacitor less than electrochemical capacitor reverse current permissible value.Wherein buffer network described in the present embodiment is selected a kind of topology as shown in Figure 4 for use, and it is by diode D
1, first resistance R
1Be composed in series, wherein diode D
1Positive terminal be connected with load one end, its other end is connected in series first resistance R
1The back is connected with an output of charging module.In some special application scenario, may appear in the installation process, on the inner electrochemical capacitor of charger or rectification module certain higher voltage is arranged, like this when use is in series with the buffer network of diode, the voltage that charger or rectification module can occur can't discharge, therefore when gate-controlled switch is closed, because the voltage of charger or rectification module inside is higher than external voltage, still can produce electric arc, perhaps can't closed gate-controlled switch owing to there is pressure reduction to exist.On the network of this series diode, increase by second resistance R that resistance is bigger again
2Can avoid the generation of this situation.For further making the present invention protect charging module and battery or load more reliably, as shown in Figure 5, this moment, described buffer network also included second resistance R
2, this second resistance R
2Be connected in parallel on by first resistance R
1With diode D
1The two ends of the circuit that is composed in series.Bing Lian second resistance R wherein
2Effect as follows:
1, be zero and when being connected at the charger output voltage with battery, second resistance R
2With first resistance R
1Be state in parallel, can take a step forward in charger work reduces the time of charger and voltage balance of battery;
2, start working again but cell voltage is lower when charger work just finishes, or other may situations, cause the inner electrolysis capacitance voltage of charger to be higher than cell voltage.In this case, Bing Lian second resistance R
2Voltage on the electrochemical capacitor can be released, make inner electrolysis capacitance voltage of charger and cell voltage reach balance.
The selection of this second resistance need consider that resistance itself can not be damaged when applying 2 times charger maximum output voltage or cell voltage, and the electric current that flows through electrochemical capacitor when the battery reversal connection is very little, can not cause the inner electrolysis capacitance damage of charger, therefore second resistance R generally speaking
2Resistance is much larger than first resistance R
1
When above-mentioned buffer network is connected in the negative pole output branch road of charging module, above-mentioned diode D
1Should oppositely connect.
Above-mentioned gate-controlled switch circuit is by gate-controlled switch K
1Form with the pressure differential detection control circuit, wherein gate-controlled switch K
1Input be connected with an end of charging module and load respectively with output, gate-controlled switch is for controlling relay or silicon controlled crystal brake pipe or power transistor or the power field effect pipe IGBT etc. that its main circuit disconnects or is communicated with by control signal.Wherein two inputs of pressure differential detection control circuit are connected to the input and the output of gate-controlled switch, and the output of pressure differential detection control circuit is connected with a control end of gate-controlled switch, and another control end of gate-controlled switch is connected with a power supply.The pressure differential detection control circuit is a prior art, and multiple implementation can be arranged, and the those of ordinary skill under this area all can not made creative work ground and select to design multiple structure, and the control circuit of pressure differential detection described in the present embodiment is by the 3rd resistance R
3, the 4th resistance R
4, the 5th resistance R
5, the 6th resistance R
6, the 7th resistance R
7, comparator U
1, triode Q
1Form, wherein the 3rd resistance R
3, the 4th resistance R
4Be composed in series bleeder circuit, the one end is connected with charging module one end, its other end ground connection, its dividing point and comparator U
1Electrode input end connect the 5th resistance R
5, the 6th resistance R
6Be composed in series another bleeder circuit, an end of this bleeder circuit is connected with load end, its other end ground connection, its dividing point and comparator U
1Negative input connect the 7th resistance R
7Be connected in parallel on comparator U
1Negative input and output between and comparator U
1Output and triode Q
1Base stage connect triode Q
1Grounded emitter, its collector electrode and gate-controlled switch K
1A control end connect.Wherein in the present embodiment, comparator U
1Can select model for use is the operational amplifier of LM324, triode Q
1Can select model for use is the triode of 2N4401.
This moment, the charge control method and the operation principle of the plug-and-play charger that prevents the battery reversal connection of the present invention were as follows:
1) hot plug protective circuit that composes in parallel by gate-controlled switch circuit and buffering network of series connection in a wherein output branch road of charging module;
2) at charging module and battery or carry the moment that is connected, the not adhesive of gate-controlled switch of gate-controlled switch circuit makes battery can not produce the macrocell impact to charging module and electrochemical capacitor wherein;
3) install whole charging circuit after, battery by buffer network to the charging module reverse charging when pressure reduction control control circuit detects cell voltage and charging module builtin voltage pressure reduction when being worth less than certain, or after the delay of control circuit through a setting-up time, just make the gate-controlled switch closure, start charging module work, to battery charge or power to the load.
Claims (6)
1, a kind of plug-and-play charger, comprise charging module and be connected in parallel on electrochemical capacitor between the charging module output, it is characterized in that being in series with in the output branch road of charging module a hot plug protective circuit that is composed in parallel by gate-controlled switch circuit and buffering network, wherein said electrochemical capacitor is positioned at the charging module side of described hot plug protective circuit; Described buffer network is the first resistance (R that is series in the charging module output branch road
1) or inductance (L
1), and described gate-controlled switch circuit is by gate-controlled switch (K
1) and pressure differential detection control circuit composition, wherein the two ends of gate-controlled switch are connected with an end of charging module and battery or load respectively, two inputs of pressure differential detection control circuit are connected to the input and the output of gate-controlled switch, the output of pressure differential detection control circuit is connected with a control end of gate-controlled switch, and another control end of gate-controlled switch is connected with a power supply.
2, a kind of plug-and-play charger, comprise charging module and be connected in parallel on electrochemical capacitor between the charging module output, it is characterized in that being in series with a hot plug protective circuit that composes in parallel by gate-controlled switch circuit and buffering network in the output branch road of charging module; Wherein said electrochemical capacitor is positioned at the charging module side of described hot plug protective circuit; Described buffer network be series in the charging module output branch road by the first resistance (R that is connected in series
1) and diode (D
1) or by the inductance (L that is connected in series
1) and diode (D
1) circuit formed, and described gate-controlled switch circuit is by gate-controlled switch (K
1) and pressure differential detection control circuit composition, wherein the two ends of gate-controlled switch are connected with an end of charging module and battery or load respectively, two inputs of pressure differential detection control circuit are connected to the input and the output of gate-controlled switch, the output of pressure differential detection control circuit is connected with a control end of gate-controlled switch, and another control end of gate-controlled switch is connected with a power supply.
3, plug-and-play charger according to claim 2 is characterized in that above-mentioned buffer network also includes the second resistance (R
2), this second resistance (R
2) be connected in parallel on by the first resistance (R
1) or inductance (L
1) and diode (D
1) two ends of the circuit that is composed in series.
4, plug-and-play charger according to claim 1 is characterized in that above-mentioned gate-controlled switch is for controlling relay or silicon controlled crystal brake pipe or power transistor or the power field effect pipe (IGBT) that its main circuit disconnects or is communicated with by control signal.
5, plug-and-play charger according to claim 1 is characterized in that above-mentioned pressure differential detection control circuit is by the 3rd resistance (R
3), the 4th resistance (R
4), the 5th resistance (R
5), the 6th resistance (R
6), the 7th resistance (R
7), comparator (U
1), triode (Q
1) composition, wherein the 3rd resistance (R
3), the 4th resistance (R
4) being composed in series bleeder circuit, the one end is connected with charging module one end, its other end ground connection, its dividing point and comparator (U
1) electrode input end connect the 5th resistance (R
5), the 6th resistance (R
6) being composed in series another bleeder circuit, an end of this bleeder circuit is connected with load end, its other end ground connection, its dividing point and comparator (U
1) negative input connect the 7th resistance (R
7) be connected in parallel on comparator (U
1) negative input and output between and comparator (U
1) output and triode (Q
1) base stage connect triode (Q
1) grounded emitter, its collector electrode and gate-controlled switch (K
1) a control end connect comparator (U
1) to select model for use be the operational amplifier of LM324, triode (Q
1) to select model for use be the triode of 2N4401.
7,, it is characterized in that above-mentioned charging module is the rectification module of single charging circuit or a plurality of output-parallels according to claim 1 or 2 or 3 described plug-and-play chargers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021151245A CN1322651C (en) | 2002-04-22 | 2002-04-22 | Plug-and-play charger and its charge control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021151245A CN1322651C (en) | 2002-04-22 | 2002-04-22 | Plug-and-play charger and its charge control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1453920A CN1453920A (en) | 2003-11-05 |
| CN1322651C true CN1322651C (en) | 2007-06-20 |
Family
ID=29256929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021151245A Expired - Lifetime CN1322651C (en) | 2002-04-22 | 2002-04-22 | Plug-and-play charger and its charge control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1322651C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101854051A (en) * | 2010-05-27 | 2010-10-06 | 艾默生网络能源有限公司 | Hot plug device of high-voltage DC UPS |
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| US7759908B2 (en) * | 2006-12-28 | 2010-07-20 | Draeger Medical Systems, Inc. | Electronic device identification system |
| CN102611295B (en) * | 2012-03-13 | 2014-06-04 | 华为技术有限公司 | Power factor corrector |
| US20140217832A1 (en) * | 2013-02-06 | 2014-08-07 | Astec International Limited | Disconnect switches in dc power systems |
| CN103219776A (en) * | 2013-05-02 | 2013-07-24 | 安伏（苏州）汽车电源科技有限公司 | High-power battery charging device capable of preventing battery reversal |
| CN104753099B (en) * | 2013-12-27 | 2017-11-14 | 中国移动通信集团广西有限公司 | A kind of electric power system and method for controlling power supply |
| CN103825266A (en) * | 2013-12-31 | 2014-05-28 | 江苏嘉钰新能源技术有限公司 | Vehicle-mounted charger rear-stage output anti-reversal connection circuit |
| CN105006868A (en) * | 2015-08-07 | 2015-10-28 | 姚晓武 | Charging device for hot plugging and reverse connection prevention of storage battery |
| CN108494238B (en) * | 2018-03-27 | 2020-11-03 | 上海电气分布式能源科技有限公司 | Circuit device for realizing hot plug of power supply |
| CN109684262B (en) * | 2019-02-14 | 2020-11-03 | 浙江中控太阳能技术有限公司 | RS485 circuit supporting hot plug |
| CN112072752A (en) * | 2020-09-18 | 2020-12-11 | 陕西千山航空电子有限责任公司 | Hot plug protection circuit of power energy storage module |
| CN114498791B (en) * | 2020-10-28 | 2024-09-13 | 深南电路股份有限公司 | Electrical path management circuit, electrical path management chip and electronic equipment |
| CN115333355A (en) * | 2021-04-16 | 2022-11-11 | 中兴通讯股份有限公司 | Connector, switching power supply and communication power supply system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2085105U (en) * | 1990-10-28 | 1991-09-18 | 张鸿勤 | Auto-controll device of charging machine |
| CN1037883C (en) * | 1992-04-03 | 1998-03-25 | 杨泰和 | Differential pressure coversion charging circuit |
| JPH11285252A (en) * | 1998-03-30 | 1999-10-15 | Toyo Electric Mfg Co Ltd | Charger |
-
2002
- 2002-04-22 CN CNB021151245A patent/CN1322651C/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2085105U (en) * | 1990-10-28 | 1991-09-18 | 张鸿勤 | Auto-controll device of charging machine |
| CN1037883C (en) * | 1992-04-03 | 1998-03-25 | 杨泰和 | Differential pressure coversion charging circuit |
| JPH11285252A (en) * | 1998-03-30 | 1999-10-15 | Toyo Electric Mfg Co Ltd | Charger |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101854051A (en) * | 2010-05-27 | 2010-10-06 | 艾默生网络能源有限公司 | Hot plug device of high-voltage DC UPS |
| CN101854051B (en) * | 2010-05-27 | 2013-01-02 | 艾默生网络能源有限公司 | Hot plug device of high-voltage DC UPS |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1453920A (en) | 2003-11-05 |
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Address after: 518057 Nanshan District science and Technology Industrial Park, Guangdong, Shenzhen Branch Road, No. Patentee after: Vitamin Technology Co., Ltd. Address before: 518057 Nanshan District science and Technology Industrial Park, Guangdong, Shenzhen Branch Road, No. Patentee before: Aimosheng Network Energy Source Co., Ltd. |
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Granted publication date: 20070620 |