CN2660759Y - Output circuit of battery charger - Google Patents
Output circuit of battery charger Download PDFInfo
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- CN2660759Y CN2660759Y CN 200320118971 CN200320118971U CN2660759Y CN 2660759 Y CN2660759 Y CN 2660759Y CN 200320118971 CN200320118971 CN 200320118971 CN 200320118971 U CN200320118971 U CN 200320118971U CN 2660759 Y CN2660759 Y CN 2660759Y
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Abstract
The utility model discloses a battery charger output circuit. In order to solve the technical issue of improving output restriction of fixed-point of positive and negative electrode of the battery charger, and avoiding damage caused by misplacement of battery polarity, the utility model takes the following technic proposal that a battery charger output circuit includes an output electrode and a rechargeable battery connected between output electrodes, the output electrode is connected with the input terminal of battery polarity identification circuit and the output terminal of the current output circuit, the charge current is inputted into the input terminal of the current output circuit, and the signal outputted from the battery polarity identification circuit reaches the current output circuit. Compared with the prior art, when the rechargeable battery is contacted with the output electrode, the battery polarity identification circuit detects the polarity of the battery and determines to recharge the battery through conduction of one of one-way circuit output loop of the current output circuit, effectively avoiding damage and security incident due to reverse connection between positive electrode and negative electrode in the process of charging. The utility model applies to the charger of rechargeable battery.
Description
Technical field
The utility model relates to the output circuit of a kind of battery charger, particularly a kind of battery charger.
Background technology
Rechargeable battery brings great convenience for people's live and work, extensive use along with rechargeable battery, comfort level to battery charger requires also more and more higher, the battery charger of prior art has strict requirement to the polarity that is placed on battery to be charged wherein, be subjected to the restriction of the essential fixing point output of charger both positive and negative polarity, if battery plus-negative plate is placed mistake, will cause the damage of rechargeable battery during charging.
Summary of the invention
The purpose of this utility model provides a kind of battery charger output circuit, and the technical problem that solve is to improve the restriction of battery charger both positive and negative polarity fixing point output, avoids the battery polar mistake to place and damage.
The utility model is by the following technical solutions: a kind of battery charger output circuit, comprise output electrode and be connected rechargeable battery between the output electrode, described output electrode connects the input of battery polar identification circuit and the output of current output circuit, the input of charging current input current output circuit, from the signal of battery polar identification circuit output to current output circuit.
Current output circuit of the present utility model comprises two groups of unidirectional current output circuits.
Two groups of unidirectional current output circuits of the present utility model are made up of two groups of triodes, one tunnel charging current through the collector and emitter of the positive pole of the collector and emitter of the first triode T1, the first electrode P1, battery and negative pole, the second electrode P2, the second triode T2 to ground connection; Another road charging current through the collector and emitter of the positive pole of the collector and emitter of the 3rd triode T3, the second electrode P2, battery and negative pole, the first electrode P1, the 4th triode T4 to ground connection.
Battery polar identification circuit of the present utility model comprises two operational amplifiers, the reverse input end of the positive input of the first operational amplifier U1A and the second operational amplifier U2B is connected with the second end P2 of output electrode, the positive input of the reverse input end of the first operational amplifier U1A and the second operational amplifier U2B is connected with the first end P1 of output electrode, the output of the second operational amplifier U2B is connected with the base stage of the first triode T1 through first resistance R 1, also be connected with the base stage of the second triode T2 by second resistance R 2, the output of the first operational amplifier U1A is connected with the base stage of the 3rd triode T3 through the 3rd resistance R 3, also is connected with the base stage of the 4th triode T4 by the 4th resistance R 4.
Be serially connected with between the positive input of the utility model first operational amplifier U1A and the reverse input end of the second operational amplifier U2B and the ground connection between the positive input of the reverse input end of the 7th resistance R 7, the first operational amplifier U1A and the second operational amplifier U2B and the ground connection and be serially connected with the 8th resistance R 8; Be serially connected with between the output of the first operational amplifier U1A and the ground connection between the output of the 6th resistance R 6, the second operational amplifier U2B and the ground connection and be serially connected with the 5th resistance R 5.
Be parallel with the 9th resistance R 9 and first capacitor C 1 between output electrode P1 of the present utility model and the P2.
Battery polar identification circuit of the present utility model adopts integrated circuit LM358, its second end is connected the second end P2 of output electrode with five terminal, the 3rd end is connected the first end P1 of output electrode with six ends, the 7th end connects first resistance R 1 and second resistance R, 2, the first ends connect the 3rd resistance R 3 and the 4th resistance R 4.
The first triode T1 of the present utility model, the second triode T2, the 3rd triode T3 and the 4th triode T4 adopt 8050 respectively, first resistance R 1 and the 3rd resistance R 3 adopt 220 ohm respectively, second resistance R 2 and the 4th resistance R 4 adopt 1 kilo-ohm respectively, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, the 8th resistance R 8 and the 9th resistance R 9 adopt 100 kilo-ohms respectively, and first capacitor C 1 adopts 0.1 microfarad.
The utility model compared with prior art, adopt battery polar identification circuit and current output circuit, during rechargeable battery contact output electrode, the polarity of battery polar identification circuit detection battery and decision are by one of them unidirectional current output loop conducting of current output circuit, battery is charged harm that has caused because of the both positive and negative polarity reversal connection when effectively having avoided battery charge and security incident.
Description of drawings
Fig. 1 is the circuit theory diagrams of the utility model embodiment.
Fig. 2 is the process chart of the utility model embodiment.
Fig. 3 the utility model embodiment circuit diagram (one).
Fig. 4 the utility model embodiment circuit diagram (two).
Embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.As shown in Figure 1, battery charger output circuit of the present utility model comprises electrode P1 and P2, battery polar identification circuit and current output circuit, and rechargeable battery is arranged between electrode P1 and the P2.Current output circuit constitutes the unidirectional current output circuit by two groups of triodes, also can adopt field effect transistor, controllable silicon or relay unidirectional current output circuit, one tunnel charging current through the collector and emitter of the positive pole of the collector and emitter of the first triode T1, the first electrode P1, battery and negative pole, the second electrode P2, the second triode T2 to ground connection; Another road charging current through the collector and emitter of the positive pole of the collector and emitter of the 3rd triode T3, the second electrode P2, battery and negative pole, the first electrode P1, the 4th triode T4 to ground connection.Two electrode P1 are connected the input of two operational amplifiers with P2, the reverse input end of the positive input of the first operational amplifier U1A and the second operational amplifier U2B is connected with the second end P2 of output electrode, the positive input of the reverse input end of the first operational amplifier U1A and the second operational amplifier U2B is connected with the first end P1 of output electrode, the output of the second operational amplifier U2B is connected with the base stage of the first triode T1 through first resistance R 1, also be connected with the base stage of the second triode T2 by second resistance R 2, the output of the first operational amplifier U1A is connected with the base stage of the 3rd triode T3 through the 3rd resistance R 3, is connected with the base stage of the 4th triode T4 by the 4th resistance R 4 simultaneously.Be serially connected with between the reverse input end of the positive input of the first operational amplifier U1A and the second operational amplifier U2B and the ground connection between the positive input of the reverse input end of the 7th resistance R 7, the first operational amplifier U1A and the second operational amplifier U2B and the ground connection and be serially connected with the 8th resistance R 8.Be serially connected with between the output of the first operational amplifier U1A and the ground connection between the output of the 6th resistance R 6, the second operational amplifier U2B and the ground connection and be serially connected with the 5th resistance R 5, be parallel with the 9th resistance R 9 and first capacitor C 1 between output electrode P1 and the P2.
As shown in Figure 2, during work, battery is put between output electrode P1 and the P2, P1 connects anode as electrode, electrode P2 connects battery cathode, this moment, the input forward of the second operational amplifier UIB connected, the output output current, make the first triode T1 and the second triode T2 conducting through first resistance R 1 and second resistance R 2, charging current charges the battery through collector and emitter, output electrode P1, anode and the negative pole of the first triode T1, collector and emitter to the ground connection of output electrode P2, the second triode T2.P1 connects battery cathode as electrode, electrode P2 connects anode, this moment, the input forward of the first operational amplifier UIA connected, the output output current, make the 3rd triode T3 and the 4th triode T4 conducting through the 3rd resistance R 3 and the 4th resistance R 4, charging current charges the battery through collector and emitter, output electrode P2, anode and the negative pole of the 3rd triode T3, collector and emitter to the ground connection of output electrode P1, the 4th triode T4.
As shown in Figure 3, the first operational amplifier UIA and the second operational amplifier UIB adopt an integrated circuit LM358, its second end is connected the second end P2 of output electrode with five terminal, the 3rd end is connected the first end P1 of output electrode with six ends, the 7th end connects first resistance R 1, second resistance R 2 and the 5th resistance R 5, first end connects the 3rd resistance R 3, the 4th resistance R 4 and the 6th resistance R 6, the four end ground connection, and the 8th end connects input current.The first triode T1, the second triode T2, the 3rd triode T3 and the 4th triode T4 adopt 8050 respectively, first resistance R 1 and the 3rd resistance R 3 adopt 220 ohm respectively, second resistance R 2 and the 4th resistance R 4 adopt 1 kilo-ohm respectively, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, the 8th resistance R 8 and the 9th resistance R 9 adopt 100 kilo-ohms respectively, and first capacitor C 1 adopts 0.1 microfarad.
As shown in Figure 4, the charging current input is parallel with green LED LED1 and red light emitting diodes LED2 respectively, and when charging the battery, green LED LED1 is luminous.When charging current was transshipped, electric current made triode Q1 conducting by the 13 resistance R 13, and electric current makes red light emitting diodes LED2 luminous through the emitter and collector of triode Q1, and prompting charging people notes.
Claims (8)
1. battery charger output circuit, comprise output electrode and be connected rechargeable battery between the output electrode, it is characterized in that: described output electrode connects the input of battery polar identification circuit and the output of current output circuit, the input of charging current input current output circuit, from the signal of battery polar identification circuit output to current output circuit.
2. battery charger output circuit according to claim 1 is characterized in that: described current output circuit comprises two groups of unidirectional current output circuits.
3. battery charger output circuit according to claim 2, it is characterized in that: described two groups of unidirectional current output circuits are made up of two groups of triodes, one tunnel charging current through the collector and emitter of the positive pole of the collector and emitter of the first triode T1, the first electrode P1, battery and negative pole, the second electrode P2, the second triode T2 to ground connection; Another road charging current through the collector and emitter of the positive pole of the collector and emitter of the 3rd triode T3, the second electrode P2, battery and negative pole, the first electrode P1, the 4th triode T4 to ground connection.
4. battery charger output circuit according to claim 3, it is characterized in that: described battery polar identification circuit comprises two operational amplifiers, the reverse input end of the positive input of the first operational amplifier U1A and the second operational amplifier U2B is connected with the second end P2 of output electrode, the positive input of the reverse input end of the first operational amplifier U1A and the second operational amplifier U2B is connected with the first end P1 of output electrode, the output of the second operational amplifier U2B is connected with the base stage of the first triode T1 through first resistance R 1, also be connected with the base stage of the second triode T2 by second resistance R 2, the output of the first operational amplifier U1A is connected with the base stage of the 3rd triode T3 through the 3rd resistance R 3, also is connected with the base stage of the 4th triode T4 by the 4th resistance R 4.
5. battery charger output circuit according to claim 4, it is characterized in that: be serially connected with between the reverse input end of the positive input of the described first operational amplifier U1A and the second operational amplifier U2B and the ground connection between the positive input of the reverse input end of the 7th resistance R 7, the first operational amplifier U1A and the second operational amplifier U2B and the ground connection and be serially connected with the 8th resistance R 8; Be serially connected with between the output of the first operational amplifier U1A and the ground connection between the output of the 6th resistance R 6, the second operational amplifier U2B and the ground connection and be serially connected with the 5th resistance R 5.
6. battery charger output circuit according to claim 5 is characterized in that: be parallel with the 9th resistance R 9 and first capacitor C 1 between described output electrode P1 and the P2.
7. battery charger output circuit according to claim 6, it is characterized in that: described battery polar identification circuit adopts integrated circuit LM358, its second end is connected the second end P2 of output electrode with five terminal, the 3rd end is connected the first end P1 of output electrode with six ends, the 7th end connects first resistance R 1 and second resistance R, 2, the first ends connect the 3rd resistance R 3 and the 4th resistance R 4.
8. battery charger output circuit according to claim 7, it is characterized in that: the described first triode T1, the second triode T2, the 3rd triode T3 and the 4th triode T4 adopt 8050 respectively, first resistance R 1 and the 3rd resistance R 3 adopt 220 ohm respectively, second resistance R 2 and the 4th resistance R 4 adopt 1 kilo-ohm respectively, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, the 8th resistance R 8 and the 9th resistance R 9 adopt 100 kilo-ohms respectively, and first capacitor C 1 adopts 0.1 microfarad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320118971 CN2660759Y (en) | 2003-12-04 | 2003-12-04 | Output circuit of battery charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320118971 CN2660759Y (en) | 2003-12-04 | 2003-12-04 | Output circuit of battery charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2660759Y true CN2660759Y (en) | 2004-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320118971 Expired - Fee Related CN2660759Y (en) | 2003-12-04 | 2003-12-04 | Output circuit of battery charger |
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| CN (1) | CN2660759Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1916650B (en) * | 2006-08-25 | 2010-05-26 | 捷创电子股份有限公司 | Device for automatic sensing polarity of battery |
| CN101212135B (en) * | 2006-12-27 | 2011-07-27 | 鸿富锦精密工业（深圳）有限公司 | Battery protection circuit and battery using the same |
| CN101521399B (en) * | 2008-11-26 | 2012-02-01 | 李少华 | Automatic polarity identifying charging circuit |
| CN102739220A (en) * | 2011-03-31 | 2012-10-17 | 曹先国 | Power switch with automatic voltage polarity conversion function |
| CN110311453A (en) * | 2019-08-20 | 2019-10-08 | 广东利元亨智能装备股份有限公司 | Reverse battery protection circuit |
-
2003
- 2003-12-04 CN CN 200320118971 patent/CN2660759Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1916650B (en) * | 2006-08-25 | 2010-05-26 | 捷创电子股份有限公司 | Device for automatic sensing polarity of battery |
| CN101212135B (en) * | 2006-12-27 | 2011-07-27 | 鸿富锦精密工业（深圳）有限公司 | Battery protection circuit and battery using the same |
| CN101521399B (en) * | 2008-11-26 | 2012-02-01 | 李少华 | Automatic polarity identifying charging circuit |
| CN102739220A (en) * | 2011-03-31 | 2012-10-17 | 曹先国 | Power switch with automatic voltage polarity conversion function |
| CN110311453A (en) * | 2019-08-20 | 2019-10-08 | 广东利元亨智能装备股份有限公司 | Reverse battery protection circuit |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |