CN2622900Y - Battery charging timer - Google Patents
Battery charging timer Download PDFInfo
- Publication number
- CN2622900Y CN2622900Y CN 03225045 CN03225045U CN2622900Y CN 2622900 Y CN2622900 Y CN 2622900Y CN 03225045 CN03225045 CN 03225045 CN 03225045 U CN03225045 U CN 03225045U CN 2622900 Y CN2622900 Y CN 2622900Y
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- Prior art keywords
- triode
- charging
- timer
- circuit
- current
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- Expired - Lifetime
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides a battery charging timer, consisting of a transformer, a rectifier circuit, a current-limiting resistor, a charging switch and a charging time control circuit consisting of a charging switch circuit, a timer, a charging start-up detecting circuit, an output of the transformer connected with the rectifying circuit, wherein the output of the rectifying circuit is limited by the current limiting circuit and then communicates with the positive terminal B+ of the charging switch. The charging control switch circuit communicates in parallel with the two ends of the current limiting circuit to start the charging signal input timer, which is used to start the charging detecting circuit. The control signal output by the timer communicates with the charging control switch circuit to put through or cut off the charging control switch circuit. The utility model not only charges batteries, but also controls the charging time, and is capable of switching the charging current according to the length of time, i.e., capable of switch from high current charging to low current charging freely.
Description
Technical field
The utility model relates to a kind of battery charger, and specifically a kind of battery charge timer can be controlled the device of charging by time length.
Background technology
At present, existing low current charge device generally is to be combined by transformer rectifier diode, current-limiting resistance (or adding indicator light), and charging device plugs in, and contacts with being recharged battery, can begin battery charge (have the lamp of indicator light bright).But charging device plugs in for a long time to being recharged battery charge, because this charging device does not have time control, can carry out the charging of big electric current to battery always, be easy to over-charging of battery, cause battery useful life to shorten, and also be bigger waste the energy.
Summary of the invention
The purpose of this utility model is intended to overcome the not free control of above-mentioned existing charger, can carry out than the charging of large power supply with to the shortcoming of energy waste battery always, a kind of charging device is provided, this charging device can not only be to battery charge, and free control, can switch electric current by time length to battery charge, promptly can be by switch to less electric current (trickle) charging than large current charge.
Realize the technical scheme of above-mentioned purpose: a kind of battery charge timer, comprise transformer, rectification circuit, current-limiting resistance, charge switch and by the charging control switch circuit, timer, start the charging interval control circuit that the charging testing circuit is formed, transformer output connects rectification circuit, rectification circuit output meets the positive extreme end B+ of charge switch after the current-limiting resistance current limliting, the charging control switch circuit is attempted by the two ends of current-limiting resistance, start the charge enable signal incoming timing device that the charging testing circuit detects, the control signal of timer output connects the charging control switch circuit, is used to control the break-make of charging control switch circuit.
Described charging control switch circuit is made up of triode Q1, Q2, resistance R 2, R8, R9, the emitter and collector of triode Q1 is attempted by the two ends of current-limiting resistance R7, resistance R 8 is connected between the collector electrode of the emitter of triode Q1 and triode Q2, resistance R 9 is connected between the collector electrode of the base stage of triode Q1 and Q2, the grounded emitter of triode Q2, the charging control signal output of timer connects the base stage of triode Q2, and timer provides power supply by transformer.
Described startup charging testing circuit is by triode Q3, resistance R 4, R6, R12, capacitor C 3 and diode D8 form, one output of transformer connects the collector electrode of triode Q3 through resistance R 12, series resistance R6, be attempted by between the collector electrode and emitter of triode Q3 after R4 and capacitor C 3 are in parallel, the base stage of triode Q3 meets the negative pole end B-of charge switch, the negative electrode of diode D8 connects the base stage of triode Q3, the anode of diode D8 connects the emitter of triode Q3, the grounded emitter of triode Q3 is by the start battery charging low level signal incoming timing device of resistance R 6 with the tie point detection of R4.
Described charging control switch circuit is a triode, and the emitter of triode, collector electrode are attempted by the two ends of current-limiting resistance, and the base stage of triode connects timer, by the break-make of deciding device control triode.
Described charging control switch circuit is a controllable silicon, and silicon controlled anode and negative electrode are attempted by the two ends of current-limiting resistance, and the silicon controlled control utmost point connects timer, by the timer control silicon controlled angle of flow, is used to change the size of charging current.
Described timer is time control IC CD4541.
Adopt technique scheme, the utility model beneficial technical effects is: by in existing charge circuit the charging interval control circuit being set, set the charging interval flexibly, be implemented in and carry out in the setting-up time, switch to the small electric current charge above behind the setting-up time than large current charge.The utility model has thoroughly been eliminated charger battery has been easy to " overcharging " even " quick-fried filling " phenomenon, has protected battery, has improved the useful life of battery, has also saved the energy now to a certain extent.The utility model is simple, ingenious, practical.
Description of drawings
Fig. 1 is a kind of structured flowchart of battery charge timer.
Fig. 2 is a kind of realization circuit diagram of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing 1 and Fig. 2 the utility model is further described:
A kind of battery charge timer comprises transformer T11, rectification circuit, current-limiting resistance R7, rectifier diode D6, charge switch and the charging interval control circuit of being made up of charging control switch circuit, timer, startup charging testing circuit.
Rectification circuit adopts rectifier bridge D1～D4, and timer IC1 adopts time control module CD4541.Transformer T11 output meets rectification circuit D1～D4, and rectification circuit D1～D4 output meets the positive extreme end B+ of charge switch behind current-limiting resistance R7, rectifier diode D6.Alternating voltage is through transformer T11 step-down, one route diode D5 rectification, capacitor C 1 filtering, after resistance R 1 current limliting, the voltage-stabiliser tube ZD1 voltage stabilizing, supply with IC1CD4541 supply pin PIN14, be connected to PIN9, PIN12, the PIN13 of IC1 simultaneously, external resistance R 3, capacitor C 2, the resistance R 5 of the PIN1 of IC1, PIN2, PIN3 formed the RC oscillation network with the IC internal circuit, the PIN4 of IC1, PIN5, PIN7, PIN10, is connected to ground wire VG, and PIN11 is vacant.The charging control switch circuit is made up of triode Q1, Q2, resistance R 2, R8, R9, the emitter and collector of triode Q1 is attempted by the two ends of current-limiting resistance R7, resistance R 8 is connected between the collector electrode of the emitter of triode Q1 and triode Q2, resistance R 9 is connected between the collector electrode of the base stage of triode Q1 and Q2, the grounded emitter of triode Q2, the charging control signal output pin PIN8 of timer IC1 connects the base stage of triode Q2 through resistance R 2, is used to control the break-make of charging control switch circuit.Start the charging testing circuit by triode Q3, resistance R 4, R6, R12, capacitor C 3 and diode D8 form, one output of transformer connects the collector electrode of triode Q3 through resistance R 12, series resistance R6, be attempted by between the collector electrode and emitter of triode Q3 after R4 and capacitor C 3 are in parallel, the base stage of triode Q3 meets the negative pole end B-of charge switch, the negative electrode of diode D8 connects the base stage of triode Q3, the anode of diode D8 connects the emitter of triode Q3, the grounded emitter of triode Q3 is by the start battery charging low level signal incoming timing device IC1 pin PIN6 of resistance R 6 with the tie point detection of R4.
The course of work: when not plugging battery, the Vcc of power supply after transformer T11 is by diode D5 rectification, resistance R 1 current limliting passes through resistance R 12, R6, R4 dividing potential drop, capacitor C 3 filtering, and the PIN6 that makes IC1 is a high level, diode D8 no current flows through not conducting, and triode Q3 ends; After plugging battery, diode D8 has electric current to flow through, triode Q3 conducting, no-voltage on the capacitor C 3, the PIN6 of IC1 is a low level, the PIN8 output high level of IC1, thus make triode Q2 conducting triode Q1 conducting by resistance R 2 to triode Q2 base stage, just begin than large current charge battery, when to after the scheduled time, the PIN8 of IC1 transfers low-voltage to by high level, causes triode Q2, Q1 to end, and is less electric current (trickle) thereby make charging current by big current switching.Promptly a charging cycle finishes.
Timer IC1 setting-up time length is counted number by the external resistance R 3 of PIN1, PIN2, the PIN3 of IC1, R5, capacitor C 2 with the different decisions of the mode of connection that its internal circuit is formed PIN12, the PIN13 of oscillation network decision frequency of oscillation and IC1; Thereafter fix time with inner common processing of IC1.
PIN12 PIN13 counts number
VG VG 8192
VG VCC 1024
VCC VG 256
VCC VCC 65536
Must be pointed out; the foregoing description is the utility model is provided with the charging interval control circuit in existing charger charge circuit a kind of implementation; can not limit protection range of the present utility model in view of the above, other equivalent circuit still belongs to protection range of the present utility model.As: the charging control switch circuit can be a triode, and the emitter of triode, collector electrode are attempted by the two ends of current-limiting resistance, and the base stage of triode controls its break-make by the timer of output electronegative potential control signal.The charging control switch circuit can also be a controllable silicon, and silicon controlled anode and negative electrode are attempted by the two ends of current-limiting resistance, and the silicon controlled control utmost point connects timer, by the timer control silicon controlled angle of flow, the size of flexibly changing charging current.Timer also can be realized by delay circuit integrated by other or that discrete component constitutes.Start the charging testing circuit also other known detection technique such as available sensors realize.
Claims (6)
1, a kind of battery charge timer, comprise transformer, rectification circuit, current-limiting resistance and charge switch, transformer output connects rectification circuit, rectification circuit output meets the positive extreme end B+ of charge switch after the current-limiting resistance current limliting, it is characterized in that: be provided with by the charging control switch circuit, timer, start the charging interval control circuit that the charging testing circuit is formed, the charging control switch circuit is attempted by the two ends of current-limiting resistance, start the charge enable signal incoming timing device that the charging testing circuit detects, the control signal of timer output connects the charging control switch circuit, is used to control the break-make of charging control switch circuit.
2, according to the described battery charge timer of claim 1, it is characterized in that: described charging control switch circuit is made up of triode Q1, Q2, resistance R 2, R8, R9, the emitter and collector of triode Q1 is attempted by the two ends of current-limiting resistance R7, resistance R 8 is connected between the collector electrode of the emitter of triode Q1 and triode Q2, resistance R 9 is connected between the collector electrode of the base stage of triode Q1 and Q2, the grounded emitter of triode Q2, the charging control signal output of timer connects the base stage of triode Q2, and timer provides power supply by transformer.
3, according to the described battery charge timer of claim 2, it is characterized in that: described startup charging testing circuit is by triode Q3, resistance R 4, R6, R12, capacitor C 3 and diode D8 form, one output of transformer connects the collector electrode of triode Q3 through resistance R 12, series resistance R6, be attempted by between the collector electrode and emitter of triode Q3 after R4 and capacitor C 3 are in parallel, the base stage of triode Q3 meets the negative pole end B-of charge switch, the negative electrode of diode D8 connects the base stage of triode Q3, the anode of diode D8 connects the emitter of triode Q3, the grounded emitter of triode Q3 is by the start battery charging low level signal incoming timing device of resistance R 6 with the tie point detection of R4.
4, according to the described battery charge timer of claim 1, it is characterized in that: described charging control switch circuit is a triode, and the emitter of triode, collector electrode are attempted by the two ends of current-limiting resistance, the base stage of triode connects timer, by the break-make of deciding device control triode.
5, according to the described battery charge timer of claim 1, it is characterized in that: described charging control switch circuit is a controllable silicon, silicon controlled anode and negative electrode are attempted by the two ends of current-limiting resistance, the silicon controlled control utmost point connects timer, by the timer control silicon controlled angle of flow, be used to change the size of charging current.
6, according to any described battery charge timer of claim 1 to 3, it is characterized in that: described timer is time control IC CD4541.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03225045 CN2622900Y (en) | 2003-04-11 | 2003-04-11 | Battery charging timer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03225045 CN2622900Y (en) | 2003-04-11 | 2003-04-11 | Battery charging timer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2622900Y true CN2622900Y (en) | 2004-06-30 |
Family
ID=34245800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03225045 Expired - Lifetime CN2622900Y (en) | 2003-04-11 | 2003-04-11 | Battery charging timer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2622900Y (en) |
-
2003
- 2003-04-11 CN CN 03225045 patent/CN2622900Y/en not_active Expired - Lifetime
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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 |
Effective date of abandoning: 20030411 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |