CN202906543U - Battery charging control circuit - Google Patents
Battery charging control circuit Download PDFInfo
- Publication number
- CN202906543U CN202906543U CN 201220653593 CN201220653593U CN202906543U CN 202906543 U CN202906543 U CN 202906543U CN 201220653593 CN201220653593 CN 201220653593 CN 201220653593 U CN201220653593 U CN 201220653593U CN 202906543 U CN202906543 U CN 202906543U
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- battery
- control circuit
- pnp triode
- triode
- circuit
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a battery charging control circuit. A conventional battery charging control circuit is relatively complicated and also relatively high in cost and power consumption. The battery charging control circuit provided by the utility model has a charging input terminal and a battery. The charging input terminal is connected with the battery respectively through a charging indication circuit and a voltage stabilizing circuit. A constant current circuit is connected in parallel between the voltage stabilizing circuit and the battery. Under the effect of the voltage stabilizing circuit and the constant current circuit, the battery can be charged in a voltage-stabilized and constant-current manner; simultaneously, when the battery is fully charged, the charging indication circuit can give out an indication showing that the battery is full; and the battery charging control circuit is simple and relatively low in cost and power consumption.
Description
Technical field
The utility model relates to power circuit, specifically refers to a kind of battery charge control circuit.
Background technology
In the electronic digital series products; what the energy was provided all is the battery that can discharge and recharge; in order to protect battery; in the process of charging to battery again; need to there be control circuit to control; so existing control circuit such as application number are 200620017043.1 the disclosed battery charger of Chinese patent; it comprises voltage changer and constant-voltage control circuit; As time goes on described voltage changer can and constantly increase the charging voltage of output with a certain initial set value output charging voltage; when the charging voltage of output reaches the charging voltage of setting, by the constant charging voltage of described constant-voltage control circuit control voltage changer output.Also be provided with simultaneously the Timer Controlling charging interval, be provided with the output current that current detection circuit detects voltage changer.Above-mentioned control circuit can be controlled the charging process of battery, but circuit is comparatively complicated, and cost is also higher, and power consumption is relatively also larger.
The utility model content
The utility model provides a kind of battery charge control circuit, can show the charging of the pressure-stabilizing constant flow of battery, and can the pilot cell full state, circuit is simple, and power consumption is few.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme: a kind of battery charge control circuit, comprise charging input end and battery, described charging input end has been connected battery through charging indication with voltage stabilizing circuit respectively, between described voltage stabilizing circuit and the battery and connect constant-current circuit.Under the effect of voltage stabilizing circuit and constant-current circuit, can carry out to battery the charging of pressure-stabilizing constant flow, charging indication can be pointed out when battery is filled and is full of simultaneously.
As preferably, described charging indication comprises a PNP triode I and a light-emitting diode, the emitter of described PNP triode I connects the positive pole of described charging input end, the base stage of described PNP triode I is connected and is connected the positive pole of described charging input end behind the dropping resistor, connect described anode after the described light-emitting diode of collector series connection of described PNP triode I, described dropping resistor connects described voltage stabilizing circuit.When beginning to charge, the conducting of PNP triode I, light-emitting diode is lighted, along with the voltage on the battery constantly rises, constantly reduces through the electric current on the dropping resistor, after battery is filled, the cut-off of PNP triode I, light-emitting diode extinguishes, and indicating battery is full of.
As preferably, connect a resistance I between the collector electrode of described PNP triode I and the described light-emitting diode positive pole, the resistance I plays the current-limiting protection effect.
As preferably, be connected in series a resistance II between the base stage of described PNP triode I and the described dropping resistor, the resistance II plays the current-limiting protection effect.
As preferably, described voltage stabilizing circuit is adjustable voltage stabilizing circuit, comprise a three-terminal voltage-stabilizing pipe and a NPN triode, described NPN transistor collector connects described charging input end positive pole after being connected in series described dropping resistor, described NPN transistor base connects afterwards ground connection of described three-terminal voltage-stabilizing pipe, serial connection one resistance III between described NPN transistor collector and the base stage, the emitter of described NPN triode connects described constant-current circuit.In the charging process, the NPN triode keeps conducting, and three-terminal voltage-stabilizing pipe output voltage is adjustable, can adjust according to actual needs the charging voltage to battery, can guarantee the battery voltage stabilizing is charged simultaneously.
As preferably, described constant-current circuit is the adjustable constant-flow circuit, comprise a PNP triode II and an adjustable resistance, described PNP triode II emitter connects the emitter of described NPN triode, the base stage of the described PNP triode II ground connection after the described adjustable resistance of connecting, described PNP triode II collector electrode connects described anode.
As preferably, described adjustable resistance is connected in series ground connection after the resistance IV, and the resistance IV plays the current-limiting protection effect.
As preferably, described NPN triode and described PNP triode II are provided with fin.
After adopting technique scheme, the utlity model has following advantage: under the effect of voltage stabilizing circuit and constant-current circuit, can realize battery is carried out the charging of pressure-stabilizing constant flow, charging indication can be pointed out when battery is filled and is full of simultaneously; Main electronic component has only comprised three triodes and a three-terminal voltage-stabilizing pipe, and circuit is simple, and cost is lower, and power consumption is lower.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described further:
Fig. 1 is the theory diagram of a kind of battery charge control circuit of the utility model;
Fig. 2 is concrete circuit connection diagram of the present utility model.
Embodiment
Referring to Fig. 1, a kind of battery charge control circuit comprises charging input end and battery 1, and described charging input end is connected with voltage stabilizing circuit through charging indication 2 respectively and has been connected battery 1, between described voltage stabilizing circuit 3 and the battery and connect constant-current circuit 4.Under the effect of voltage stabilizing circuit 3 and constant-current circuit 4, can realize battery 1 is carried out the charging of pressure-stabilizing constant flow, charging indication 2 can be pointed out when battery 1 is filled and is full of simultaneously.
Referring to Fig. 2; described charging indication 2 comprises a PNP triode I Q1 and a light-emitting diode D1; the emitter of described PNP triode I Q1 connects the positive pole of described charging input end; the base stage of described PNP triode I Q1 is connected and is connected the positive pole of described charging input end behind the dropping resistor R1, and serial connection one plays the resistance II R3 of current-limiting protection effect between the base stage of described PNP triode I Q1 and the described dropping resistor R1.Connect described battery 1 positive pole after the described light-emitting diode D1 of collector series connection of described PNP triode I Q1, connect the resistance I R2 of current-limiting protection effect between the collector electrode of described PNP triode I Q1 and the described light-emitting diode D1 positive pole.Described dropping resistor R1 connects described voltage stabilizing circuit.
Described voltage stabilizing circuit 2 is adjustable voltage stabilizing circuit, comprise a three-terminal voltage-stabilizing pipe T1 and a NPN triode Q2, connect described charging input end after the described dropping resistor R1 of described NPN triode Q2 collector series connection anodal, described NPN triode Q2 base stage connects afterwards ground connection of described three-terminal voltage-stabilizing pipe T1, serial connection one resistance III R4 between described NPN triode Q2 collector electrode and the base stage, the emitter of described NPN triode Q2 connects described constant-current circuit 4.
Described constant-current circuit 4 is adjustable constant-flow circuit; comprise a PNP triode II Q3 and an adjustable resistance R5; described PNP triode II Q3 emitter connects the emitter of described NPN triode Q2; the base stage of the described PNP triode II Q3 ground connection after the described adjustable resistance R5 of connecting, described adjustable resistance R5 serial connection one are played ground connection behind the resistance IV R6 of current-limiting protection effect.Described PNP triode II Q3 collector electrode connects described battery 1 positive pole, regulates adjustable resistance R5 the constant current charge electric current can be provided as required.
When beginning to charge, PNP triode I Q1 conducting, light-emitting diode D1 lights, along with the voltage on the battery 1 constantly rises, constantly reduce through the electric current on the dropping resistor R1, after battery 1 is filled, PNP triode I Q1 cut-off, light-emitting diode D1 extinguishes, and indicating battery 1 is full of.In the charging process, NPN triode Q2 keeps conducting, and three-terminal voltage-stabilizing pipe T1 output voltage is adjustable, can adjust according to actual needs the charging voltage to battery 1, can guarantee battery 1 voltage stabilizing is charged simultaneously.
Described NPN triode (Q2) and described PNP triode II (Q3) are provided with fin, and fin guarantees the circuit steady operation.
Claims (8)
1. battery charge control circuit, comprise charging input end and battery (1), it is characterized in that: described charging input end is connected 3 through charging indication (2) with voltage stabilizing circuit respectively) connected battery (1), between described voltage stabilizing circuit (3) and the battery and connect constant-current circuit (4).
2. battery charge control circuit according to claim 1, it is characterized in that: described charging indication (2) comprises a PNP triode I (Q1) and a light-emitting diode (D1), the emitter of described PNP triode I (Q1) connects the positive pole of described charging input end, the base stage of described PNP triode I (Q1) is connected and is connected the positive pole of described charging input end behind the dropping resistor (R1), the described light-emitting diode of collector series connection (D1) of described PNP triode I (Q1) connects described battery (1) positive pole afterwards, and described dropping resistor (R1) connects described voltage stabilizing circuit.
3. battery charge control circuit according to claim 2 is characterized in that: connect a resistance I (R2) between the collector electrode of described PNP triode I (Q1) and described light-emitting diode (D1) positive pole.
4. battery charge control circuit according to claim 2 is characterized in that: serial connection one resistance II (R3) between the base stage of described PNP triode I (Q1) and the described dropping resistor (R1).
5. battery charge control circuit according to claim 2, it is characterized in that: described voltage stabilizing circuit (3) is adjustable voltage stabilizing circuit, comprise a three-terminal voltage-stabilizing pipe (T1) and a NPN triode (Q2), it is anodal that the described dropping resistor of described NPN triode (Q2) collector series connection (R1) connects described charging input end afterwards, described NPN triode (Q2) base stage connects afterwards ground connection of described three-terminal voltage-stabilizing pipe (T1), serial connection one resistance III (R4) between described NPN triode (Q2) collector electrode and the base stage, the emitter of described NPN triode (Q2) connects described constant-current circuit (4).
6. battery charge control circuit according to claim 5, it is characterized in that: described constant-current circuit (4) is the adjustable constant-flow circuit, comprise a PNP triode II (Q3) and an adjustable resistance (R5), described PNP triode II (Q3) emitter connects the emitter of described NPN triode (Q2), the base stage of described PNP triode II (Q3) the afterwards ground connection of described adjustable resistance (R5) of connecting, described PNP triode II (Q3) collector electrode connects described battery (1) positive pole.
7. battery charge control circuit according to claim 6 is characterized in that: ground connection after described adjustable resistance (R5) the serial connection one resistance IV (R6).
8. battery charge control circuit according to claim 6, it is characterized in that: described NPN triode (Q2) and described PNP triode II (Q3) are provided with fin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220653593 CN202906543U (en) | 2012-11-30 | 2012-11-30 | Battery charging control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220653593 CN202906543U (en) | 2012-11-30 | 2012-11-30 | Battery charging control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202906543U true CN202906543U (en) | 2013-04-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220653593 Expired - Lifetime CN202906543U (en) | 2012-11-30 | 2012-11-30 | Battery charging control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202906543U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102957195A (en) * | 2012-11-30 | 2013-03-06 | 费新华 | Battery charge controlling circuit |
| CN110444175A (en) * | 2019-07-15 | 2019-11-12 | 广州东驰电子科技有限公司 | Oled flexible liquid crystal mosaic screen |
-
2012
- 2012-11-30 CN CN 201220653593 patent/CN202906543U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102957195A (en) * | 2012-11-30 | 2013-03-06 | 费新华 | Battery charge controlling circuit |
| CN102957195B (en) * | 2012-11-30 | 2015-05-20 | 国网浙江省电力公司丽水供电公司 | Battery charge controlling circuit |
| CN110444175A (en) * | 2019-07-15 | 2019-11-12 | 广州东驰电子科技有限公司 | Oled flexible liquid crystal mosaic screen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130424 Effective date of abandoning: 20150520 |
|
| RGAV | Abandon patent right to avoid regrant |