CN205389127U - Nickel cadmium cell charger - Google Patents
Nickel cadmium cell charger Download PDFInfo
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- CN205389127U CN205389127U CN201620222974.9U CN201620222974U CN205389127U CN 205389127 U CN205389127 U CN 205389127U CN 201620222974 U CN201620222974 U CN 201620222974U CN 205389127 U CN205389127 U CN 205389127U
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Abstract
Nickel cadmium cell charger belongs to the control field that charges, the utility model discloses a solve that current nickel cadmium cell charger is single to have quick charge mode and can't meet the demands, use absolute temperature to terminate the coarse problem of charging method. The utility model discloses a transformer T, rectifier circuit UR, NE555 time -base integrated circuit, 7851 steady voltage chips, reset switch S1, quick charge switch S2, auxiliary relay K, comparator A, resistance R1~R11, slide rheostat rp, electric capacity C1, C2, PNP triode VT, pilot lamp VD1~VD3, trickle or quick charge mode can be selected, electric automatic shutdown is full of.
Description
Technical field
This utility model belongs to charging control field.
Background technology
The discharge and recharge that nickel-cadmium cell is repeatable more than 500 times, economy and durability.Its internal resistance power is little, and both internal resistance was only small, quickly-chargeable, can provide big electric current for load again, and when discharging, change in voltage is only small, was a kind of ideal direct current supply battery.
Nickel-cadmium cell has memory effect, if to carry out the discharge and recharge of a larger capacity, battery will be unable to normal operation, therefore it is required that charger must overcharge protection, some low cost chargers use absolute temperature to terminate charging.Although simple, cost is low, but this charge termination method inaccuracy.
When nickel-cadmium cell no or new for a long time is charged, as adopted quick charge can affect the life-span of battery at the very start, should adopting trickle charge mode, therefore the single charger with quick charge cannot meet requirement.
Summary of the invention
This utility model is in order that solve that existing Ni-Cd battery charger is single to be had quick charge mode and cannot meet requirement；Absolute temperature is used to terminate the coarse problem of charging method, it is provided that a kind of Ni-Cd battery charger.
Ni-Cd battery charger described in the utility model, it includes transformator T, rectification circuit UR, NE555 time-base integrated circuit, 7851 voltage stabilizing chips, reset switch S1, fast charge switch S2, auxiliary reclay K, comparator A, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, slide rheostat Rp, electrochemical capacitor C1, electric capacity C2, PNP triode VT, relay indicating light VD1, trickle charge mode indicating lamp VD2 and fast charge mode display lamp VD3；
The two ends of transformator T primary coil connect 220V alternating current power supply；The two ends of transformator T secondary coil connect the ac input end of rectification circuit UR；The cathode power supply outfan of rectification circuit UR is simultaneously connected with 1 foot of 7851 voltage stabilizing chips and the positive pole of electrochemical capacitor C1, and 3 feet of 7851 voltage stabilizing chips are simultaneously connected with the anode of one end of resistance R2,4 feet of NE555 time-base integrated circuit, 8 feet, one end of resistance R4, one end of resistance R6 and relay indicating light VD1；The minus earth of electrochemical capacitor C1；
2 feet of NE555 time-base integrated circuit, 6 feet are simultaneously connected with one end of electric capacity C2, one end of fast charge switch S2, one end of reset switch S1 and of slide rheostat Rp and fix end；The other end of fast charge switch S2 connects the other end of resistance R2；The other end of reset switch S1 connects one end of resistance R1；
5 feet of NE555 time-base integrated circuit connect one end of resistance R3；
3 feet of NE555 time-base integrated circuit connect one end of auxiliary reclay K coil；
The other end of resistance R6 connects the emitter stage of PNP triode VT, and the base stage of PNP triode VT is simultaneously connected with one end of relay indicating light VD1 negative electrode and resistance R7, and the other end of resistance R7 connects the outfan of comparator A；The inverting input of comparator A is simultaneously connected with the other end of resistance R4 and one end of resistance R5, and the in-phase input end of comparator A connects the positive pole of nickel-cadmium cell GB；
The colelctor electrode of PNP triode VT is simultaneously connected with one end of one end of resistance R8, trickle charge mode indicating lamp VD2 anode, fast charge mode display lamp VD3 anode and resistance R11；The negative electrode of trickle charge mode indicating lamp VD2 connects one end of resistance R9, and fast charge mode display lamp VD3 negative electrode connects one end of resistance R10；The other end of resistance R8 and the other end of resistance R9 connect the positive pole of nickel-cadmium cell GB by auxiliary reclay K normally opened contact K1；The other end of resistance R10 and the other end of resistance R10 connect the positive pole of nickel-cadmium cell GB by auxiliary reclay K normally-closed contact K2；
The negative pole of nickel-cadmium cell GB is simultaneously connected with the negative power supply outfan of the other end of resistance R5, the other end of auxiliary reclay K coil, 1 foot of NE555 time-base integrated circuit, the other end of resistance R3, the other end of electric capacity C2, another fixing end of slide rheostat Rp and movable end thereof, 2 feet of 7851 voltage stabilizing chips, the other end of resistance R1 and rectification circuit UR ground connection.
Advantage of the present utility model: this utility model needs to manually select trickle charge or quick charge according to user, quick charge adopts timing, whether monitoring battery is full of in real time simultaneously, disconnects charge circuit immediately, it is prevented that overcharge and cause cell damage after nickel-cadmium cell is fully charged.
Accompanying drawing explanation
Fig. 1 is the physical circuit figure of Ni-Cd battery charger described in the utility model.
Detailed description of the invention
Detailed description of the invention one: present embodiment is described below in conjunction with Fig. 1, Ni-Cd battery charger described in present embodiment, it includes transformator T, rectification circuit UR, NE555 time-base integrated circuit, 7851 voltage stabilizing chips, reset switch S1, fast charge switch S2, auxiliary reclay K, comparator A, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, slide rheostat Rp, electrochemical capacitor C1, electric capacity C2, PNP triode VT, relay indicating light VD1, trickle charge mode indicating lamp VD2 and fast charge mode display lamp VD3；
The two ends of transformator T primary coil connect 220V alternating current power supply；The two ends of transformator T secondary coil connect the ac input end of rectification circuit UR；The cathode power supply outfan of rectification circuit UR is simultaneously connected with 1 foot of 7851 voltage stabilizing chips and the positive pole of electrochemical capacitor C1, and 3 feet of 7851 voltage stabilizing chips are simultaneously connected with the anode of one end of resistance R2,4 feet of NE555 time-base integrated circuit, 8 feet, one end of resistance R4, one end of resistance R6 and relay indicating light VD1；The minus earth of electrochemical capacitor C1；
2 feet of NE555 time-base integrated circuit, 6 feet are simultaneously connected with one end of electric capacity C2, one end of fast charge switch S2, one end of reset switch S1 and of slide rheostat Rp and fix end；The other end of fast charge switch S2 connects the other end of resistance R2；The other end of reset switch S1 connects one end of resistance R1；
5 feet of NE555 time-base integrated circuit connect one end of resistance R3；
3 feet of NE555 time-base integrated circuit connect one end of auxiliary reclay K coil；
The other end of resistance R6 connects the emitter stage of PNP triode VT, and the base stage of PNP triode VT is simultaneously connected with one end of relay indicating light VD1 negative electrode and resistance R7, and the other end of resistance R7 connects the outfan of comparator A；The inverting input of comparator A is simultaneously connected with the other end of resistance R4 and one end of resistance R5, and the in-phase input end of comparator A connects the positive pole of nickel-cadmium cell GB；
The colelctor electrode of PNP triode VT is simultaneously connected with one end of one end of resistance R8, trickle charge mode indicating lamp VD2 anode, fast charge mode display lamp VD3 anode and resistance R11；The negative electrode of trickle charge mode indicating lamp VD2 connects one end of resistance R9, and fast charge mode display lamp VD3 negative electrode connects one end of resistance R10；The other end of resistance R8 and the other end of resistance R9 connect the positive pole of nickel-cadmium cell GB by auxiliary reclay K normally opened contact K1；The other end of resistance R10 and the other end of resistance R10 connect the positive pole of nickel-cadmium cell GB by auxiliary reclay K normally-closed contact K2；
The negative pole of nickel-cadmium cell GB is simultaneously connected with the negative power supply outfan of the other end of resistance R5, the other end of auxiliary reclay K coil, 1 foot of NE555 time-base integrated circuit, the other end of resistance R3, the other end of electric capacity C2, another fixing end of slide rheostat Rp and movable end thereof, 2 feet of 7851 voltage stabilizing chips, the other end of resistance R1 and rectification circuit UR ground connection.
Rectification circuit UR is made up of four diodes.
Relay indicating light VD1, trickle charge mode indicating lamp VD2 and fast charge mode display lamp VD3 respectively adopt color to be red, yellow and green LED light emitting diode.
Operation principle:
220V alternating voltage, through transformator T blood pressure lowering, UR rectification output+5V unidirectional current, provides working power for NE555 after 7851 voltage stabilizings, charges for GB.
The in-phase input end of comparator A gathers the voltage of GB, and inverting input provides reference voltage, and when GB electricity is low, its anti-phase input terminal voltage is higher than in-phase input end voltage, and A output low level, VT is continuously in conducting state；After GB is electrically charged and exceedes reference voltage, A exports high level, and VT ends, and charge control loop is disconnected.
When being just switched on power supply, 2 feet of NE555 are low levels, the 3 foot output high level lower than the 1/3, NE555 of running voltage, K coil obtains electric, its normally opened contact K1 closes, and its normally-closed contact K2 disconnects, and+5V power supply is that GB carries out trickle charge by R8, R9, when now GB electricity is low, its anti-phase input terminal voltage is higher than in-phase input end voltage, and A output low level, VT is continuously in conducting state.
To change quick charge into, press after S2 is about 1s and decontrol, IC2 is charged to high level by+5V power supply by R2, the voltage of 2 feet of NE555 exceedes the 2/3 of running voltage, then NE555 interior overturn, the 3 foot output low levels of NE555, auxiliary reclay K coil losing electricity, K1 disconnects, and K2 closes, and+5V power supply carries out quick charge by R10, R11.Simultaneously C2 begins through Rp and discharges, and namely starts timing, when the electricity of C2 is low to moderate less than the 1/3 of running voltage, namely 2 feet of NE555 lower than running voltage 1/3 time, 3 feet of NE555 export high level again.The length of discharge time is adjusted by Rp, is generally adapted to two hours.
In charging process, if the in-phase input end voltage monitoring comparator A is higher than anti-phase input terminal voltage, namely GB is fully charged, then comparator A outfan output high level, and VT ends, and disconnects charge circuit, stops charging.
Claims (3)
1. Ni-Cd battery charger, it is characterized in that, it includes transformator T, rectification circuit UR, NE555 time-base integrated circuit, 7851 voltage stabilizing chips, reset switch S1, fast charge switch S2, auxiliary reclay K, comparator A, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, slide rheostat Rp, electrochemical capacitor C1, electric capacity C2, PNP triode VT, relay indicating light VD1, trickle charge mode indicating lamp VD2 and fast charge mode display lamp VD3；
The two ends of transformator T primary coil connect 220V alternating current power supply；The two ends of transformator T secondary coil connect the ac input end of rectification circuit UR；The cathode power supply outfan of rectification circuit UR is simultaneously connected with 1 foot of 7851 voltage stabilizing chips and the positive pole of electrochemical capacitor C1, and 3 feet of 7851 voltage stabilizing chips are simultaneously connected with the anode of one end of resistance R2,4 feet of NE555 time-base integrated circuit, 8 feet, one end of resistance R4, one end of resistance R6 and relay indicating light VD1；The minus earth of electrochemical capacitor C1；
2 feet of NE555 time-base integrated circuit, 6 feet are simultaneously connected with one end of electric capacity C2, one end of fast charge switch S2, one end of reset switch S1 and of slide rheostat Rp and fix end；The other end of fast charge switch S2 connects the other end of resistance R2；The other end of reset switch S1 connects one end of resistance R1；
5 feet of NE555 time-base integrated circuit connect one end of resistance R3；
3 feet of NE555 time-base integrated circuit connect one end of auxiliary reclay K coil；
The other end of resistance R6 connects the emitter stage of PNP triode VT, and the base stage of PNP triode VT is simultaneously connected with one end of relay indicating light VD1 negative electrode and resistance R7, and the other end of resistance R7 connects the outfan of comparator A；The inverting input of comparator A is simultaneously connected with the other end of resistance R4 and one end of resistance R5, and the in-phase input end of comparator A connects the positive pole of nickel-cadmium cell GB；
The colelctor electrode of PNP triode VT is simultaneously connected with one end of one end of resistance R8, trickle charge mode indicating lamp VD2 anode, fast charge mode display lamp VD3 anode and resistance R11；The negative electrode of trickle charge mode indicating lamp VD2 connects one end of resistance R9, and fast charge mode display lamp VD3 negative electrode connects one end of resistance R10；The other end of resistance R8 and the other end of resistance R9 connect the positive pole of nickel-cadmium cell GB by auxiliary reclay K normally opened contact K1；The other end of resistance R10 and the other end of resistance R10 connect the positive pole of nickel-cadmium cell GB by auxiliary reclay K normally-closed contact K2；
The negative pole of nickel-cadmium cell GB is simultaneously connected with the negative power supply outfan of the other end of resistance R5, the other end of auxiliary reclay K coil, 1 foot of NE555 time-base integrated circuit, the other end of resistance R3, the other end of electric capacity C2, another fixing end of slide rheostat Rp and movable end thereof, 2 feet of 7851 voltage stabilizing chips, the other end of resistance R1 and rectification circuit UR ground connection.
2. Ni-Cd battery charger according to claim 1, it is characterised in that rectification circuit UR is made up of four diodes.
3. Ni-Cd battery charger according to claim 1, it is characterised in that relay indicating light VD1, trickle charge mode indicating lamp VD2 and fast charge mode display lamp VD3 respectively adopt color to be red, yellow and green LED light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620222974.9U CN205389127U (en) | 2016-03-22 | 2016-03-22 | Nickel cadmium cell charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620222974.9U CN205389127U (en) | 2016-03-22 | 2016-03-22 | Nickel cadmium cell charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205389127U true CN205389127U (en) | 2016-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620222974.9U Expired - Fee Related CN205389127U (en) | 2016-03-22 | 2016-03-22 | Nickel cadmium cell charger |
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| Country | Link |
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| CN (1) | CN205389127U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329342A (en) * | 2016-10-28 | 2017-01-11 | 桂林大创科技有限公司 | Direct-current power supply device and charging circuit thereof |
| CN110966155A (en) * | 2019-12-24 | 2020-04-07 | 赵华勇 | Double-purpose straight-flow pump |
-
2016
- 2016-03-22 CN CN201620222974.9U patent/CN205389127U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329342A (en) * | 2016-10-28 | 2017-01-11 | 桂林大创科技有限公司 | Direct-current power supply device and charging circuit thereof |
| CN110966155A (en) * | 2019-12-24 | 2020-04-07 | 赵华勇 | Double-purpose straight-flow pump |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160720 Termination date: 20180322 |