CN203951225U - Battery charger - Google Patents
Battery charger Download PDFInfo
- Publication number
- CN203951225U CN203951225U CN201420276480.XU CN201420276480U CN203951225U CN 203951225 U CN203951225 U CN 203951225U CN 201420276480 U CN201420276480 U CN 201420276480U CN 203951225 U CN203951225 U CN 203951225U
- Authority
- CN
- China
- Prior art keywords
- battery
- resistance
- triode
- micro
- effect transistor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a kind of battery charger, belong to battery charger technical field.Comprise the battery voltage sampling loop that is parallel to output; Series diode and the output control switch loop with micro-chip processor between the positive pole of described battery voltage sampling loop and charger output.This battery charger is when charger charged state, and after battery being detected and being full of, output control switch loop is closed; During in charger standby or without input state, counnter attack electric leakage diode, battery voltage sampling loop can effectively suppress the discharging current of battery, can not only perfectly play battery protection effect, and can realize the zero-power of battery, greatly save waste and the loss of the energy; This circuit arrangement can be widely used in various battery chargers and some power source special.
Description
Technical field
The utility model relates to a kind of battery charger, specifically a kind of without when input battery reach the battery charger of zero loss, belong to battery charger technical field.
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, under the long-time idle state in being connected with battery of its possibility, to lower energy-conservation, the less discharging current of battery request, longer service time just seeming particularly important, reduce the wastage, energy savings, is must pursuing of power supply industry development.
Along with the growing of power supply industry with to the improving constantly of product requirement, in the industry, successively released at present the requirement that reduces energy consumption at aspects such as power supply, batteries, its target be energy-conservation, reduce discharge, reduce greenhouse effect etc.As shown in Figure 1, battery charger of the prior art is because needs are to cell voltage with electric current is sampled and signal capture, and batteries in parallel connection voltage sampling circuit between charger output and battery-end to be charged only, such battery charger can make battery produce larger power consumption, waste energy, cannot realize the object that battery charger battery when without input reaches zero loss.
Utility model content
The problem existing for above-mentioned prior art, the utility model provides a kind of battery charger, can make battery reach the object of zero loss during without input at battery charger.
To achieve these goals, this battery charger comprises the battery voltage sampling loop that is parallel to output;
Series diode and the output control switch loop with micro-chip processor between the positive pole of described battery voltage sampling loop and charger output.
Further, described output control switch loop is comprised of micro-chip processor U1 and peripheral circuit thereof and field effect transistor Q1 and triode Q2;
The source electrode of described field effect transistor Q1 is connected with the negative pole of diode D1, and the drain electrode of field effect transistor Q1 is connected with the charge port B+ utmost point;
The 13rd pin input/output port of described micro-chip processor U1 is connected with the base stage of triode Q2 through resistance R 3, the base stage of described triode Q2 is the grounded emitter with triode Q2 through resistance R 4, the collector electrode of triode Q2 is connected with the grid of field effect transistor Q1 through resistance R 2, and resistance R 1 is connected across between the source electrode and grid of described field effect transistor Q1;
The base stage of the 8th pin input/output port of described micro-chip processor U1 triode Q4 in resistance R 10 connection described battery voltage sampling loops, the 10th pin digital-to-analogue conversion port of micro-chip processor U1 connects the serial connection point of resistance R 6 and resistance R 7 in described battery voltage sampling loops through resistance R 5, and the 10th pin of described micro-chip processor U1 is by capacitor C 1 ground connection.
Further, described micro-chip processor is the single-chip microcomputer micro-chip processor with analog conversion function.
Further, described diode is Schottky diode.
Further, described field effect transistor is P channel depletion type field effect transistor.
Further, described triode is NPN type triode.
Compared with prior art; this battery charger is at the unloaded standby of charger or battery during in full state; the 13rd pin output low level of micro-chip processor U1; the base earth of resistance R 4 connecting triode Q2; triode Q2 cut-off; in resistance R 1, no current flows through; it is resistance R 1 no-voltage; also no-voltage between the source electrode of field effect transistor Q1 and grid; now field effect transistor Q1 cut-off, no current flows into battery-end from charger, now stops charging; can not produce the phenomenon that overcharges to battery, play the protective effect to battery.
At charger in when exchanging input state and having battery access, micro-chip processor U1 does not work, its each pin no-output, triode Q2 and triode Q4 are in cut-off state, field effect transistor Q1 and field effect transistor Q3 are also in cut-off state, battery only has by the counnter attack diode D1 that leaks electricity, triode Q2, the leakage current electric discharge of field effect transistor Q3 and triode Q4, and the magnitude of leakage current of these elements is now all in nA level, so discharging current is also in nA level, therefore now the discharging current of battery is negligible in this rank, can be considered battery in zero loss state.
In sum, this battery charger is when charger charged state, and after battery being detected and being full of, output control switch loop is closed; During in charger standby or without input state, counnter attack electric leakage diode, battery voltage sampling loop can effectively suppress the discharging current of battery, can not only perfectly play battery protection effect, and can realize the zero-power of battery, greatly save waste and the loss of the energy; This circuit arrangement can be widely used in various battery chargers and some power source special.
Accompanying drawing explanation
Fig. 1 is the theory diagram of partial circuit in battery charger in prior art;
Fig. 2 is schematic block circuit diagram of the present utility model;
Fig. 3 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described further.
As shown in Figures 2 and 3, this battery charger comprises the battery voltage sampling loop that is parallel to output;
Series diode and the output control switch loop with micro-chip processor between the positive pole of described battery voltage sampling loop and charger output.
Further, described output control switch loop is comprised of micro-chip processor U1 and peripheral circuit thereof and field effect transistor Q1 and triode Q2;
The source electrode of described field effect transistor Q1 is connected with the negative pole of diode D1, and the drain electrode of field effect transistor Q1 is connected with the charge port B+ utmost point;
The 13rd pin input/output port of described micro-chip processor U1 is connected with the base stage of triode Q2 through resistance R 3, the base stage of described triode Q2 is the grounded emitter with triode Q2 through resistance R 4, the collector electrode of triode Q2 is connected with the grid of field effect transistor Q1 through resistance R 2, and resistance R 1 is connected across between the source electrode and grid of described field effect transistor Q1;
The base stage of the 8th pin input/output port of described micro-chip processor U1 triode Q4 in resistance R 10 connection described battery voltage sampling loops, the 10th pin digital-to-analogue conversion port of micro-chip processor U1 connects the serial connection point of resistance R 6 and resistance R 7 in described battery voltage sampling loops through resistance R 5, and the 10th pin of described micro-chip processor U1 is by capacitor C 1 ground connection.
The grounded emitter of triode Q4 in described battery voltage sampling loop, the collector electrode of triode Q4 is connected with the grid of field effect transistor Q3 by resistance R 9, resistance R 8 is connected across between the source electrode and grid of described field effect transistor Q3, and the drain electrode of described field effect transistor Q3 is by resistance R 6 and resistance R 7 series connection ground connection.
Further, described micro-chip processor is the single-chip microcomputer micro-chip processor with analog conversion function.It is with low cost, perfect in shape and function, work security of operation, reliable.
Further, described diode is Schottky diode.Although common diode also can be realized the function of counnter attack electric leakage, the advantages such as it is fast that but Schottky diode has compared with general-purpose diode the resume speed of shutoff, and conduction voltage drop is little, and loss is little, be used in the technical solution of the utility model and can significantly imitate and reduce loss, energy savings.
Further, described field effect transistor is P channel depletion type field effect transistor.Its conduction voltage drop is little, and electric current is large, meets the enforcement requirement of technical solutions of the utility model.
Further, described triode is NPN type triode.The highest 5V of only having of driving voltage exporting in micro-chip processor, if adopt positive-negative-positive triode, its emitter voltage is higher than 5V, the uncontrolled conducting of meeting, does not have on-off action.Therefore only have the NPN of employing type triode could be suitable for the technical solution of the utility model.
As shown in Figure 3, charger to battery charging process in, the 13rd pin input/output port output high level of micro-chip processor U1, after resistance R 3, resistance R 4 dividing potential drops, trigger triode Q2 conducting, resistance R 1, resistance R 2 ground connection, resistance R 1 obtains dividing potential drop, and the magnitude of voltage of resistance R 1 surpasses the source electrode of field effect transistor Q1 and the conducting voltage between grid, make field effect transistor Q1 conducting, now have electric current to flow into battery-end and charge the battery by leak electricity diode D1, field effect transistor Q1 of counnter attack from charger.
At the unloaded standby of charger or battery during in full state; the 13rd pin input/output port output low level of micro-chip processor U1, the base earth of resistance R 4 connecting triode Q2, triode Q2 cut-off; in resistance R 1, no current flows through; be resistance R 1 no-voltage, also no-voltage between the source electrode of field effect transistor Q1 and grid, now field effect transistor Q1 cut-off; no current flows into battery-end from charger; now stop charging, can not produce the phenomenon that overcharges to battery, play the protective effect to battery.
Charger in to battery charging process and charger when unloaded holding state, the 8th pin input/output port output high level of micro-chip processor U1, by resistance R 10 trigger triode Q4 conductings, resistance R 8, resistance R 9 ground connection, resistance R 8 obtains dividing potential drop, and the magnitude of voltage of resistance R 8 surpasses the source electrode of field effect transistor Q3 and the conducting voltage between grid, make field effect transistor Q3 conducting, resistance R 6, resistance R 7 is connected to battery-end, resistance R 7 obtains dividing potential drop, by flowing into the 10th pin digital-to-analogue conversion port of micro-chip processor U1 after the current limliting of resistance R 5 and the filter action of capacitor C 1, the 10th pin of micro-chip processor U1 has analog-digital conversion function, current cell voltage can be detected, by detecting cell voltage, judged whether that battery accesses.
Charger is when nothing exchanges input state and have battery access, micro-chip processor U1 does not work, its each pin no-output, triode Q2 and triode Q4 are in cut-off state, field effect transistor Q1 and field effect transistor Q3 are also in cut-off state, battery only has by the counnter attack diode D1 that leaks electricity, triode Q2, the leakage current electric discharge of field effect transistor Q3 and triode Q4, and the magnitude of leakage current of these elements is now all in nA level, so discharging current is also in nA level, therefore now the discharging current of battery is negligible in this rank, can be considered battery in zero loss state.
This battery charger, when charger charged state, after battery being detected and being full of, cuts out output control switch loop; During in charger standby or without input state, counnter attack electric leakage diode, battery voltage sampling loop can effectively suppress the discharging current of battery, can not only perfectly play battery protection effect, and can realize the zero-power of battery, greatly save waste and the loss of the energy; This circuit arrangement can be widely used in various battery chargers and some power source special.
Claims (6)
1. a battery charger, comprises the battery voltage sampling loop that is parallel to output;
It is characterized in that series diode and the output control switch loop with micro-chip processor between described battery voltage sampling loop and the positive pole of charger output.
2. a kind of battery charger according to claim 1, is characterized in that, described output control switch loop is comprised of micro-chip processor U1 and peripheral circuit thereof and field effect transistor Q1 and triode Q2;
The source electrode of described field effect transistor Q1 is connected with the negative pole of diode D1, and the drain electrode of field effect transistor Q1 is connected with the charge port B+ utmost point;
The 13rd pin input/output port of described micro-chip processor U1 is connected with the base stage of triode Q2 through resistance R 3, the base stage of described triode Q2 is the grounded emitter with triode Q2 through resistance R 4, the collector electrode of triode Q2 is connected with the grid of field effect transistor Q1 through resistance R 2, and resistance R 1 is connected across between the source electrode and grid of described field effect transistor Q1;
The base stage of the 8th pin input/output port of described micro-chip processor U1 triode Q4 in resistance R 10 connection described battery voltage sampling loops, the 10th pin digital-to-analogue conversion port of micro-chip processor U1 connects the serial connection point of resistance R 6 and resistance R 7 in described battery voltage sampling loops through resistance R 5, and the 10th pin of described micro-chip processor U1 is by capacitor C 1 ground connection.
3. a kind of battery charger according to claim 1 and 2, is characterized in that, described micro-chip processor is the single-chip microcomputer micro-chip processor with analog conversion function.
4. a kind of battery charger according to claim 1 and 2, is characterized in that, described diode is Schottky diode.
5. a kind of battery charger according to claim 2, is characterized in that, described field effect transistor is P channel depletion type field effect transistor.
6. a kind of battery charger according to claim 2, is characterized in that, described triode is NPN type triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420276480.XU CN203951225U (en) | 2014-05-27 | 2014-05-27 | Battery charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420276480.XU CN203951225U (en) | 2014-05-27 | 2014-05-27 | Battery charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203951225U true CN203951225U (en) | 2014-11-19 |
Family
ID=51893242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420276480.XU Expired - Fee Related CN203951225U (en) | 2014-05-27 | 2014-05-27 | Battery charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203951225U (en) |
Cited By (2)
| 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 |
| 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 |
-
2014
- 2014-05-27 CN CN201420276480.XU patent/CN203951225U/en not_active Expired - Fee Related
Cited By (2)
| 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 |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204179729U (en) | A kind of communication discrete lithium battery back-up source | |
| CN203056630U (en) | Battery-charger charging-protection and non-input battery zero-loss circuit | |
| CN204012676U (en) | A kind of battery detecting and protective circuit | |
| CN104065115A (en) | Battery charger | |
| CN203951225U (en) | Battery charger | |
| CN204190446U (en) | A kind of accumulator routing inspection circuit | |
| CN103746433B (en) | The device of multi-functional charge-discharge circuit and composition thereof | |
| CN106532154B (en) | Novel lithium battery power supply management circuit | |
| CN205070581U (en) | Photovoltaic charging circuit | |
| CN204967367U (en) | Notebook computer battery protection circuit | |
| CN205070409U (en) | Switch transistor pressure drop holding circuit and applied this pressure drop holding circuit's lithium battery protection circuit | |
| CN204288116U (en) | A kind of computer battery overvoltage and reversal connection warning circuit | |
| CN203984062U (en) | Lithium battery frequency conversion quick-charging circuit | |
| CN204761073U (en) | Solar energy is full of electrical shutoff control ware | |
| CN204030645U (en) | The charging circuit of portable power source | |
| CN203989869U (en) | Remote-controlled toy vehicle charging detects automatic power-off circuit | |
| CN206533118U (en) | Low pressure cut-off protection circuit | |
| CN203617696U (en) | Cell over-discharge protection circuit | |
| CN103779839A (en) | Automatic opening type starting circuit powered up by rechargeable battery | |
| CN204334052U (en) | A kind of battery drops into circuit automatically | |
| CN203722214U (en) | Self-switching-off starting circuit powered by rechargeable battery | |
| CN203574360U (en) | Refrigerator with surge protection | |
| CN204721277U (en) | A kind of solar power supply apparatus | |
| CN203933064U (en) | The rechargeable solar charging electric control circuit of a kind of counnter attack | |
| CN203932982U (en) | A kind of electric candle low-voltage protection circuit structure |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141119 Termination date: 20170527 |