CN203056630U - Battery-charger charging-protection and non-input battery zero-loss circuit - Google Patents
Battery-charger charging-protection and non-input battery zero-loss circuit Download PDFInfo
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- CN203056630U CN203056630U CN 201220745919 CN201220745919U CN203056630U CN 203056630 U CN203056630 U CN 203056630U CN 201220745919 CN201220745919 CN 201220745919 CN 201220745919 U CN201220745919 U CN 201220745919U CN 203056630 U CN203056630 U CN 203056630U
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Abstract
The utility model discloses a battery-charger charging-protection and non-input battery zero-loss circuit and belongs to the battery charging technology field. The charging-protection and non-input battery zero-loss circuit comprises an inverse-connection electric-leakage prevented diode (1), an output-control switch loop (2), a battery-voltage sampling loop (3), a battery (4) and a charger, wherein the charger successively passes by the inverse-connection electric-leakage prevented diode (1) and the output-control switch loop (2) and then is connected with the battery (4). The battery-voltage sampling loop (3) is connected with the battery (4) in parallel. By adding an inverse-connection electric-leakage prevented circuit and a charging-completed protection circuit to an original charging apparatus and improving a battery sampling loop, a protection effect when in charging and zero loss of a lithium battery when in standby or non-input are realized, the circuit can not only play the battery protection effect, but also realize battery zero power consumption, and energy waste and consumption are greatly saved.
Description
Technical field
The utility model relates to a kind of charging circuit, protection and battery zero losser circuit when not having input when specifically being the charging of a kind of battery charger.
Background technology
At electronic information field, energy-conserving and environment-protective are the targets of pursuing in the industry always, power supply and charger for frequent use, because under the idle state that it may be in for a long time with battery is connected, to lower energy-conservation, the littler discharging current of battery request, longer service time just seeming even more important, it can reduce the wastage, and energy savings is must pursuing of human power supply industry development.
Along with the growing of power supply industry and the raising that requires, countries in the world have at present all successively been released and have been required the requirement that cuts down the consumption of energy at aspects such as power supply, batteries, its target be energy-conservation, reduce discharging, reduce greenhouse effect etc.As shown in Figure 1, existing battery charger because of needs to cell voltage with electric current is sampled and signal capture, such circuit can make battery produce big power consumption, wastes energy, and can not realize zero-power.
Summary of the invention
At the problem that above-mentioned prior art exists, protection and battery zero losser circuit when not having input can be realized zero-power when the utility model provided a kind of battery charger charging.
To achieve these goals; the technical solution adopted in the utility model is: protection and battery zero losser circuit when not having input during the charging of a kind of battery charger; comprise counnter attack electric leakage diode, output control switch loop, battery voltage sampling loop, battery and charger; charger is connected to battery by counnter attack electric leakage diode, output control switch loop successively, and the battery voltage sampling loop is in parallel with battery.
The output control switch loop comprises P channel depletion type field effect transistor Q1, NPN triode Q2, resistance R 4, resistance R 3, resistance R 2, resistance R 1 and little process chip U1, the 13rd pin of little process chip U1 is connected with the base stage of NPN triode Q2 by resistance R 3, the base stage of NPN triode Q2 is by resistance R 4 ground connection, the grounded emitter of NPN triode Q2, the collector electrode of NPN triode Q2 is connected with the grid of P channel depletion type field effect transistor Q1 by resistance R 2, and resistance R 1 cross-over connection is between the source electrode and grid of P channel depletion type field effect transistor Q1.
The battery voltage sampling loop comprises P channel depletion type field effect transistor Q3, NPN triode Q4, resistance R 9, resistance R 8, resistance R 10, resistance R 5, resistance R 6, resistance R 7, capacitor C 1, little process chip U1, the 8th pin of little process chip U1 is connected with the base stage of NPN triode Q4 by resistance R 10, the grounded emitter of NPN triode Q4, the collector electrode of NPN triode Q4 is connected with the grid of P channel depletion type field effect transistor Q3 by resistance R 9, resistance R 8 cross-over connections are between the source electrode and grid of P channel depletion type field effect transistor Q3, the drain electrode of P channel depletion type field effect transistor Q3 is by the be connected in series to ground of resistance R 6 with resistance R 7, resistance R 6 and resistance R 7 junctions are connected to the 10th pin of little process chip U1 by resistance R 5, and the 10th pin of little process chip U1 is by capacitor C 1 ground connection.
Counnter attack electric leakage diode is Schottky diode D1.
Compare with existing apparatus, the utility model after detecting battery and being full of, is closed the output control switch loop when the charger charged state; In the charger standby or when not having input state, counnter attack electric leakage diode, battery voltage sampling loop can effectively suppress battery discharge current, can not only perfectly play the battery protection effect, and can realize the zero-power of battery, save waste and the loss of the energy greatly; This circuit arrangement can be widely used in various battery chargers and some power source special.
Description of drawings
Fig. 1 is the existing structure schematic diagram;
Fig. 2 is the utility model structural representation;
Fig. 3 is the utility model circuit theory diagrams.
Among the figure: 1, counnter attack electric leakage diode, 2, the output control switch loop, 3, the battery sampling loop, 4, battery.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figures 2 and 3: the when charging protection of the utility model battery charger and battery zero losser circuit when not having input, comprise counnter attack electric leakage diode 1, output control switch loop 2, battery voltage sampling loop 3, battery 4 and charger, charger is connected to battery 4 by counnter attack electric leakage diode 1, output control switch loop 2 successively, and battery voltage sampling loop 3 is in parallel with battery 4; Output control switch loop 2 comprises P channel depletion type field effect transistor Q1, NPN triode Q2, resistance R 4, resistance R 3, resistance R 2, resistance R 1 and little process chip U1, the 13rd pin of little process chip U1 is connected with the base stage of NPN triode Q2 by resistance R 3, the base stage of NPN triode Q2 is by resistance R 4 ground connection, the grounded emitter of NPN triode Q2, the collector electrode of NPN triode Q2 is connected with the grid of P channel depletion type field effect transistor Q1 by resistance R 2, and resistance R 1 cross-over connection is between the source electrode and grid of P channel depletion type field effect transistor Q1; Battery voltage sampling loop 3 comprises P channel depletion type field effect transistor Q3, NPN triode Q4, resistance R 9, resistance R 8, resistance R 10, resistance R 5, resistance R 6, resistance R 7, capacitor C 1, little process chip U1, the 8th pin of little process chip U1 is connected with the base stage of NPN triode Q4 by resistance R 10, the grounded emitter of NPN triode Q4, the collector electrode of NPN triode Q4 is connected with the grid of P channel depletion type field effect transistor Q3 by resistance R 9, resistance R 8 cross-over connections are between the source electrode and grid of P channel depletion type field effect transistor Q3, the drain electrode of P channel depletion type field effect transistor Q3 is by the be connected in series to ground of resistance R 6 with resistance R 7, resistance R 6 and resistance R 7 junctions are connected to the 10th pin of little process chip U1 by resistance R 5, and the 10th pin of little process chip U1 is by capacitor C 1 ground connection; Counnter attack electric leakage diode 1 is Schottky diode D1.
As shown in Figure 3, charger is in battery 4 charging processes, the 13rd pin output high level of little process chip U1, after resistance R 3, resistance R 4 dividing potential drops, trigger NPN triode Q2 conducting, resistance R 1, resistance R 2 are connected to ground, resistance R 1 obtains dividing potential drop, and magnitude of voltage surpasses the source electrode of P channel depletion type field effect transistor Q1 and the conducting voltage between grid, P channel depletion type field effect transistor Q1 conducting then has electric current to flow to battery 4 ends from charger by Schottky diode D1, P channel depletion type field effect transistor Q1 and gives battery 4 chargings.
As shown in Figure 3; when the unloaded standby of charger or battery 4 full state; the 13rd pin output low level of little process chip U1; resistance R 4 connects the base stage of NPN triode Q2 to ground; NPN triode Q2 ends; no current flows through on the resistance R 1; resistance R 1 no-voltage; no-voltage between the source electrode of P channel depletion type field effect transistor Q1 and grid; P channel depletion type field effect transistor Q1 ends, and no current 4 flows through from the charger to the battery, stops charging; can not produce the phenomenon that overcharges to battery, play the protective effect to battery.
As shown in Figure 3, charger is in to battery 4 charging processes, the 8th pin output high level of little process chip U1, trigger NPN triode Q4 conducting by resistance R 63, resistance R 8, resistance R 9 is connected to ground, resistance R 8 obtains dividing potential drop, and magnitude of voltage surpasses the source electrode of P channel depletion type field effect transistor Q3 and the conducting voltage between grid, P channel depletion type field effect transistor Q3 conducting, resistance R 6, resistance R 7 is connected to battery 4 ends, and resistance R 7 obtains dividing potential drop, enters the 10th pin of little process chip U1 by resistance R 5 current limlitings and capacitor C 1 filtering, the 10th pin of little process chip U1 has the AD function, can detect current battery 4 voltages.
As shown in Figure 3, charger or during unloaded holding state, the 8th pin output high level of little process chip U1, trigger NPN triode Q4 conducting by resistance R 63, resistance R 8, resistance R 9 is connected to ground, resistance R 8 obtains dividing potential drop, and magnitude of voltage surpasses the source electrode of P channel depletion type field effect transistor Q3 and the conducting voltage between grid, P channel depletion type field effect transistor Q3 conducting, resistance R 6, resistance R 7 is connected to battery 4 ends, and resistance R 7 obtains dividing potential drop, enters the 10th pin of little process chip U1 by resistance R 5 current limlitings and capacitor C 1 filtering, the 10th pin of little process chip U1 has the AD function, can judge whether that battery 4 inserts by detecting voltage.
As shown in Figure 3, charger is not when having the input state of interchange and connecting battery 4, little process chip U1 does not work, each pin no-output, NPN triode Q2 and NPN triode Q4 are in cut-off state, P channel depletion type field effect transistor Q1 and P channel depletion type field effect transistor Q3 also are in cut-off state, battery 4 has only the leakage current discharge by counnter attack electric leakage diode 1D1, NPN triode Q2, P channel depletion type field effect transistor Q3 and NPN triode Q4, and the leakage current of these elements is in the nA level, so discharging current is also in the nA level.
Above tell about only for a kind of preferred embodiment of the utility model, can limit the claim of the utility model certainly with this, therefore the equivalent variations of doing according to the utility model claim still belongs to the scope that the utility model is contained.
Claims (4)
1. protection and battery zero losser circuit when not having input during battery charger charging; it is characterized in that; comprise counnter attack electric leakage diode (1), output control switch loop (2), battery voltage sampling loop (3), battery (4) and charger; charger is connected to battery (4) by counnter attack electric leakage diode (1), output control switch loop (2) successively, and battery voltage sampling loop (3) are in parallel with battery (4).
2. protection and battery zero losser circuit when not having input during a kind of battery charger charging according to claim 1; it is characterized in that; described output control switch loop (2) comprises P channel depletion type field effect transistor Q1; NPN triode Q2; resistance R 4; resistance R 3; resistance R 2; resistance R 1 and little process chip U1; the 13rd pin of little process chip U1 is connected with the base stage of NPN triode Q2 by resistance R 3; the base stage of NPN triode Q2 is by resistance R 4 ground connection; the grounded emitter of NPN triode Q2; the collector electrode of NPN triode Q2 is connected with the grid of P channel depletion type field effect transistor Q1 by resistance R 2, and resistance R 1 cross-over connection is between the source electrode and grid of P channel depletion type field effect transistor Q1.
3. protection and battery zero losser circuit when not having input during a kind of battery charger charging according to claim 1; it is characterized in that; described battery voltage sampling loop (3) comprises P channel depletion type field effect transistor Q3; NPN triode Q4; resistance R 9; resistance R 8; resistance R 10; resistance R 5; resistance R 6; resistance R 7; capacitor C 1; little process chip U1; the 8th pin of little process chip U1 is connected with the base stage of NPN triode Q4 by resistance R 10; the grounded emitter of NPN triode Q4; the collector electrode of NPN triode Q4 is connected with the grid of P channel depletion type field effect transistor Q3 by resistance R 9; resistance R 8 cross-over connections are between the source electrode and grid of P channel depletion type field effect transistor Q3; the drain electrode of P channel depletion type field effect transistor Q3 is by the be connected in series to ground of resistance R 6 with resistance R 7; resistance R 6 and resistance R 7 junctions are connected to the 10th pin of little process chip U1 by resistance R 5, and the 10th pin of little process chip U1 is by capacitor C 1 ground connection.
4. protection and battery zero losser circuit when not having input during a kind of battery charger charging according to claim 1 is characterized in that described counnter attack electric leakage diode (1) is Schottky diode D1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220745919 CN203056630U (en) | 2012-12-29 | 2012-12-29 | Battery-charger charging-protection and non-input battery zero-loss circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220745919 CN203056630U (en) | 2012-12-29 | 2012-12-29 | Battery-charger charging-protection and non-input battery zero-loss circuit |
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| CN203056630U true CN203056630U (en) | 2013-07-10 |
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| CN 201220745919 Expired - Fee Related CN203056630U (en) | 2012-12-29 | 2012-12-29 | Battery-charger charging-protection and non-input battery zero-loss circuit |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104065115A (en) * | 2014-05-27 | 2014-09-24 | 徐州市恒源电器有限公司 | Battery charger |
| CN104578261A (en) * | 2014-12-22 | 2015-04-29 | 惠州市亿能电子有限公司 | Low power consumption battery management system |
| CN106160148A (en) * | 2015-12-07 | 2016-11-23 | 张家港市华为电子有限公司 | Static zero losser circuit of onboard charger and onboard charger |
| CN106851952A (en) * | 2017-01-04 | 2017-06-13 | 上海奕瑞光电子科技有限公司 | A kind of flat panel detector circuit implementing method for reducing patient leakage current |
| CN108242830A (en) * | 2016-12-23 | 2018-07-03 | 茂达电子股份有限公司 | Switching type charging circuit |
| CN108462227A (en) * | 2018-03-07 | 2018-08-28 | 深圳市亿道数码技术有限公司 | Realize the control system of the bis- chargings of DC and Micro USB |
| CN115494277A (en) * | 2022-08-03 | 2022-12-20 | 中勍科技股份有限公司 | Voltage acquisition circuit with ultralow leakage current |
-
2012
- 2012-12-29 CN CN 201220745919 patent/CN203056630U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104065115A (en) * | 2014-05-27 | 2014-09-24 | 徐州市恒源电器有限公司 | Battery charger |
| CN104578261A (en) * | 2014-12-22 | 2015-04-29 | 惠州市亿能电子有限公司 | Low power consumption battery management system |
| CN106160148A (en) * | 2015-12-07 | 2016-11-23 | 张家港市华为电子有限公司 | Static zero losser circuit of onboard charger and onboard charger |
| CN106160148B (en) * | 2015-12-07 | 2019-07-19 | 张家港市华为电子有限公司 | Onboard charger |
| CN108242830A (en) * | 2016-12-23 | 2018-07-03 | 茂达电子股份有限公司 | Switching type charging circuit |
| CN108242830B (en) * | 2016-12-23 | 2020-02-04 | 茂达电子股份有限公司 | Switching type charging circuit |
| CN106851952A (en) * | 2017-01-04 | 2017-06-13 | 上海奕瑞光电子科技有限公司 | A kind of flat panel detector circuit implementing method for reducing patient leakage current |
| CN106851952B (en) * | 2017-01-04 | 2018-09-25 | 上海奕瑞光电子科技股份有限公司 | A kind of flat panel detector circuit implementing method reducing patient leakage current |
| CN108462227A (en) * | 2018-03-07 | 2018-08-28 | 深圳市亿道数码技术有限公司 | Realize the control system of the bis- chargings of DC and Micro USB |
| CN108462227B (en) * | 2018-03-07 | 2023-11-21 | 深圳市亿道数码技术有限公司 | Control system for realizing DC and Micro USB double charging |
| CN115494277A (en) * | 2022-08-03 | 2022-12-20 | 中勍科技股份有限公司 | Voltage acquisition circuit with ultralow leakage current |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20141229 |
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| EXPY | Termination of patent right or utility model |