CN1096613A - Nickel-cadmium/nickel-hydrogen cell charging and discharging device - Google Patents
Nickel-cadmium/nickel-hydrogen cell charging and discharging device Download PDFInfo
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- CN1096613A CN1096613A CN 93107236 CN93107236A CN1096613A CN 1096613 A CN1096613 A CN 1096613A CN 93107236 CN93107236 CN 93107236 CN 93107236 A CN93107236 A CN 93107236A CN 1096613 A CN1096613 A CN 1096613A
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Abstract
The present invention relates to a kind of nickel-cadmium/nickel-hydrogen cell charging and discharging device, refer to especially a kind of before charging in advance with the discharge of the residual electric energy of battery to eliminate the charge and discharge device of memory effect.Formed by microcomputer control circuit, fixed current controling circuit, charging voltage testing circuit, liquid crystal display circuit and battery discharging circuit.Can set charging current for fill soon, general, little wherein a kind of charge mode that fills in three kinds, and inside also has overtime automatic outage, charging interval to show and electric weight percentages show, battery short circuit/demonstrations of opening circuit, saturated indication and battery discharge are indicated and buzzer warning.
Description
The present invention relates to a kind of nickel-cadmium/nickel-hydrogen cell charging and discharging device, formed by microcomputer control circuit, fixed current controling circuit, charging voltage testing circuit and liquid crystal display circuit and battery discharging circuit.Available microcomputer control circuit is set the output current of fixed current controling circuit, changes the charging current size,, is cut off charge power supply automatically through microcomputer control circuit, and changes the pulse micro charging into when saturated by charging voltage testing circuit monitoring battery.This battery discharging circuit can start in advance battery remnant electric power is eliminated, to reduce or to eliminate its memory effect, to guarantee battery charge efficient when battery be desired to charge again.There is clocking capability microcomputer control circuit of the present invention inside, can cut off the power supply automatically when charging is long.Its liquid crystal display circuit is provided with charging interval demonstration, electric weight percentages show, the battery short circuit/indication of opening circuit, the saturated indication of battery, battery discharge status indication and collocation has buzzer so that the audible alarm of saturated and abnormality to be provided, and provides a kind of tool well to indicate usefulness, can set the charge and discharge device of charging current size and the some automation functions of tool.
Discuss by present general charger, the voltage ratio power-down mode automatically that adopt more, promptly when the voltage of rechargeable battery reaches the magnitude of voltage that sets, promptly cut off the electricity supply automatically, because the saturation voltage value of nickel-cadmium/nickel-hydrogen cell may not be identical, the voltage manner of comparison of this fixed voltage value may cause the partly overcharged or undercharge of nickel-cadmium/nickel-hydrogen cell, the overcharged battery that then causes reduces useful life, and undercharge then can't reach the requirement of expection electric weight.
In addition, existing rechargeable battery all has so-called memory effect, need the safety discharge to be eliminated, and the structure that existing charger is not eliminated the residual electric energy of battery to be charged, this shortens its ability that stores electric weight with regard to more causing the accumulation of rechargeable battery memory effect and reduces useful life.
Have, conventional charger only has the minority indicator light to reach " saturated " two states with indication " charging " again, and the user can't understand comprehensive situation of battery charge.
Main purpose of the present invention is: a kind of nickel-cadmium/nickel-hydrogen cell charging and discharging device is provided, inner by microcomputer control circuit, liquid crystal display circuit, fixed current controling circuit, discharge circuit, the charging voltage testing circuit is formed, can set the charging current size of battery through microcomputer control circuit, have soon and fill, the general three kinds of charge modes of trickle charge that reach, can be charged according to actual needs, and its detection battery saturation condition is the comparison value by last time voltage and existing voltage, if produce one difference-△ V, represent that promptly battery is saturated, cut off charge power supply in view of the above, and can cooperate the saturation voltage value of rechargeable battery itself to adjust automatically fully, to prevent the problem of over-charging of battery or undercharge.And when cutting off the power supply automatically, do faint pulse current charge, to keep the electric power of battery by microcomputer control circuit control.Also have timing to cut off the power supply automatically, can be saturated and take out when reaching certain hour in battery, i.e. outage automatically is to guarantee battery useful life.
Of the present invention time a purpose is: a kind of nickel-cadmium/nickel-hydrogen cell charging and discharging device is provided, its discharge circuit can be pressed key control by of microcomputer control circuit, with battery to be charged safety discharge in advance, to eliminate the memory effect of battery, make battery have excellent storage usefulness, and under this discharge operation, when cell voltage drops to low level, the present invention can start charge circuit voluntarily by microcomputer control circuit and charge automatically, and discharge and charging action once-through operation can be finished.So not only have concurrently outside the battery discharge structure, operate also very easy.
Another purpose of the present invention is: a kind of nickel-cadmium/nickel-hydrogen cell charging and discharging device is provided, its microcomputer control circuit inside has timing, battery lack/to open circuit to detect and the electric weight indication, the saturated indicator light of charging interval digital display, battery, the battery that utilizes LCD to constitute lack/open circuit indicator light, electric weight percentage indicator light, battery discharge status indicator light and charge current mode indicator light etc. have good display effect.
A further object of the present invention is: a kind of nickel-cadmium/nickel-hydrogen cell charging and discharging device is provided, and this LCD is provided with the backlight structure of illumination, makes it lower or when using night at ambient brightness, still can obtain suitable illumination.
Another object of the present invention is to: a kind of nickel-cadmium/nickel-hydrogen cell charging and discharging device is provided, microcomputer control circuit connects a buzzer, can produce audible alarm by buzzer when battery is weak point/off state, when the battery saturation condition, then produce short sound, make it have the auditory tone cues effect.
The utility model provides a kind of nickel-cadmium/nickel-hydrogen cell charging and discharging device, be by a fixed current controling circuit, one discharge circuit, one charging voltage testing circuit, one microcomputer control circuit and a liquid crystal display circuit are formed, it is characterized in that: this fixed current controling circuit is to be serially connected between power input and the rechargeable battery connection end point, discharge circuit and charging voltage testing circuit are connected on the rechargeable battery plus end, charging voltage testing circuit output is sent into microcomputer control circuit, can start internal timer and battery saturation detection, microcomputer control circuit is connected to fixed current controling circuit respectively with three groups of unlike signals, on discharge circuit and the liquid crystal display circuit, to control the output current value of fixed current controling circuit respectively, open and close discharge circuit and make LCD indicate various states; And the charging current initialization circuit and that microcomputer control circuit inside has a counter and setting key to constitute is connected the electronic switch set of charging current initialization circuit output, be serially connected with the resistance of different impedances on the electronic switch set, in order to set the switching of button, make electronic switch set do corresponding switching, change the current output value of deciding of fixed current controling circuit; And discharge circuit is connected in series transistor composition with a current-limiting resistance, sends signal enabling so that the band rechargeable battery discharges by microcomputer control circuit through button.
Aforesaid nickel-cadmium/nickel-hydrogen cell charging and discharging device, it is characterized in that: this microcomputer control circuit also comprises a chip microprocessor, its I/O end points connects a discharge button, and opens and closes button, buzzer and liquid crystal display circuit, also have two terminals that can send pulse signal, be connected to fixed current controling circuit and charging voltage testing circuit respectively, when battery charge is saturated, fixed current controling circuit is stopped, and another terminal is regularly sent pulse signal and is carried out voltage detecting to start the charging voltage testing circuit.
Aforesaid nickel-cadmium/nickel-hydrogen cell charging and discharging device, it is characterized in that: this fixed current controling circuit is made up of an operational amplifier and two transistor, the normal phase input end of operational amplifier connects a divider resistance and is connected to microcomputer control circuit, its inverting input is connected with the load series resistance of rechargeable battery, for input feedback signal.
Aforesaid nickel-cadmium/nickel-hydrogen cell charging and discharging device is characterized in that: the back side of this liquid crystal display circuit is provided with a backlight that is connected on the power end, so that the illumination of liquid crystal display circuit to be provided.
Aforesaid nickel-cadmium/nickel-hydrogen cell charging and discharging device, it is characterized in that: this charging voltage testing circuit is formed with a group inte gration circuit and two groups of operational amplifiers that are connected with charged battery voltage and internal reference voltage respectively, sends comparison signal to microcomputer control circuit by two operational amplifiers.
Aforesaid nickel-cadmium/nickel-hydrogen cell charging and discharging device is characterized in that: the panel of this liquid crystal display circuit is provided with three groups of indicator lights of representing indicator light, the saturated indicator light of a battery, a battery short circuit/indicator light that opens circuit, a battery discharging indicator, a charging interval digital display and a plurality of representative electric weight percentages of charging current size respectively.
Further specify architectural feature of the present invention and purpose below in conjunction with accompanying drawing.
Brief Description Of Drawings:
Fig. 1 is a system block diagrams of the present invention.
Fig. 2 is a detailed circuit diagram of the present invention.
Fig. 3 is a display panels plane graph of the present invention.
As shown in Figure 1, structure of the present invention connects a power supply stabilization circuit 70 and a fixed current controling circuit 10 promptly to go up in power input (B+), the output of fixed current controling circuit 10 promptly connects a rechargeable battery 60 and a discharge circuit 50, and the negative terminal of rechargeable battery 60 is connected with a load series resistance 63, drawing feedback signal in this resistance is fed back in the fixed current controling circuit 20, anode in rechargeable battery 60 connects a charging voltage testing circuit 40, the output of charging voltage testing circuit 40 is sent into a microcomputer control circuit 20, microcomputer control circuit 20 exportable three groups of signals are connected to fixed current controling circuit 10 respectively, discharge circuit 50 and being connected on the liquid crystal display circuit 30, be respectively charging current setting key 222 and discharge button 211 and be connected with two in microcomputer control circuit 20, can be by charging current setting key 222 to change the output current that drives fixed current controling circuit 10, position rechargeable battery in the wings (has and fills soon and can be charged according to the size of current of setting, the general three kinds of charge modes of trickle charge that reach), and this discharge button 211 can make microcomputer control circuit 20 trigger these discharge circuit 50 conductings, the rechargeable battery of desiring to charge 60 is discharged in advance, to eliminate the memory internal effect, charging is better after making; And when battery discharge during to low-voltage, can detect and enter charged state automatically by microcomputer control circuit 20, save repeatedly the trouble of button operation.
When fixed current controling circuit begins to treat rechargeable battery 60 chargings, detect by charging voltage testing circuit 40, and when sending comparison signal to microcomputer control circuit 20, promptly start an internal timer, can make liquid crystal display circuit 30 show the charging interval, and the output voltage state of charging voltage testing circuit 40 also can be stored in microcomputer control circuit 20 inside, be saturation condition and terminal voltage when descending slightly at rechargeable battery 60, promptly send in the microcomputer control circuit 20 through this charging voltage testing circuit 40, then differentiate is that battery is saturated, in view of the above with cut off fixed current controling circuit 10 to battery charge, rechargeable battery 60 is charged with faint pulse current then send a pulse enable signal fixed current controling circuit 10 by microcomputer control circuit 20, to keep rechargeable battery 60 electric weight, this microcomputer control circuit 20 more can be to the capable again timing of battery saturation condition, make its i.e. outage automatically after saturation condition surpasses a period of time, make battery unlikely impaired.
And also be provided with buzzer in aforementioned this microcomputer control circuit 20, and be saturation condition and battery is under the abnormality of short/open in this battery charge, can produce different audible alarms, make it more practical.
By aforementioned structure as can be known, advantage of the present invention is: have multiple current charges pattern, have discharge circuit to eliminate memory effect, battery saturation voltage detection and diversified status display function automatically for battery, more easy to operate than conventional charger, thereby more correspond to actual needs.
About detailed circuit diagram of the present invention, referring to Fig. 2, this power supply stabilization circuit 70(is on the drawing upper left side) constitute by a three terminal regulator, so that the internal circuit burning voltage to be provided, and fixed current controling circuit 10 is to form with an operational amplifier 13 and two transistor 14,15; Wherein, the normal phase input end of operational amplifier 13 is connected to a divider resistance 11,12 and is connected to downwards on the electronic switch set 23, the inverting input of operational amplifier 13 then is connected with the load series resistance 63 of the rechargeable battery 60 of drawing right-hand member, operational amplifier 13 outputs then promote transistor 14,15, and the collection utmost point of back one transistor 15 is delivered to rechargeable battery 60 anodes through filter capacitor and diode; The different switching states of below electronic switch set 23, make different resistance 234～236 cross-over connections that are connected in series with it on the normal phase input end of operational amplifier 13, to change the potential state of this normal phase input end, reach the output current size that changes this fixed current controling circuit 10, under the state with three groups of electronic switches 231～233 in this circuit of the present invention, even it has three kinds of current-modes (fast, generally, at a slow speed); The drawing upper right side constitutes discharge circuit 50 of the present invention with a current-limiting resistance 51 and a transistor 52, connect transistor 52 base stages by a chip microprocessor 21, after starting 52, rechargeable battery 60 is discharged, the anode of rechargeable battery 60 is with divider resistance 61,62 dividing potential drops produce one and represent the voltage of battery to input to the drawing lower right with three groups of operational amplifiers 41,44, in the 45 charging voltage testing circuits of being formed 40, these charging voltage testing circuit 40 inside are with operational amplifier 41, resistance 43, electric capacity 42 is formed an integrating circuit, when the single chip microprocessor 21 of resistance 43 left-hand end connection is regularly sent direct impulse, even operational amplifier 41 is sent triangular wave to start other two operational amplifiers 44,45, two operational amplifiers 44,45 normal phase input end is connected to respectively on the dividing potential drop end points of charged battery voltage and internal reference voltage, its output is promptly delivered to (start its inner timer simultaneously and pick up counting this moment) in the chip microprocessor 21, starting two operational amplifiers 44,45 o'clock, can send ratio respectively with cell voltage and internal reference voltage, and do computing through chip microprocessor 21 inside, storage, when treating to start charging voltage testing circuit 40 next time, relatively this voltage and last time voltage difference, be lower than last time during voltage as this voltage, represent that promptly battery enters saturation condition, can send the inverting input of a high potential signal through a diode 24 by chip microprocessor 21 to fixed current controling circuit 10 operational amplifiers 13, automatically stop battery charge, and by control this diode 24 end points send pulse signal, make 10 pairs of batteries of fixed current controling circuit carry out faint pulse current charge, to keep the electric weight of rechargeable battery.
Claims (6)
1, a kind of nickel-cadmium/nickel-hydrogen cell charging and discharging device, by a fixed current controling circuit, one discharge circuit, one charging voltage testing circuit, one microcomputer control circuit and a liquid crystal display circuit are formed, it is characterized in that: this fixed current controling circuit is to be serially connected between power input and the rechargeable battery connection end point, discharge circuit and charging voltage testing circuit are connected on the rechargeable battery plus end, charging voltage testing circuit output connects microcomputer control circuit, can start internal timer and make the battery saturation detection, microcomputer control circuit is connected to fixed current controling circuit respectively with three groups of unlike signals, on discharge circuit and the liquid crystal display circuit, to control the output current value of fixed current controling circuit respectively, open and close discharge circuit and make LCD indicate various states; And microcomputer control circuit inside has a charging current initialization circuit and that is made of counter and setting key to be connected the electronic switch set of charging current initialization circuit output, be serially connected with the resistance of different impedances on the electronic switch set, to set the switching of button, make electronic switch set do corresponding switching, change the current output value of deciding of fixed current controling circuit, and discharge circuit is connected in series transistor composition with a current-limiting resistance, sends signal enabling so that discharge in pond to be charged by microcomputer control circuit through button.
2, nickel-cadmium/nickel-hydrogen cell charging and discharging device according to claim 1, it is characterized in that: this microcomputer control circuit also comprises a chip microprocessor, its I/O end points connects a discharge button, and opens and closes button, buzzer and liquid crystal display circuit, also have two terminals that can send pulse signal, be connected to fixed current controling circuit and charging voltage testing circuit respectively, when battery charge is saturated, fixed current controling circuit is stopped, and another terminal is regularly sent pulse signal and is carried out voltage detecting to start the charging voltage testing circuit.
3, nickel-cadmium/nickel-hydrogen cell charging and discharging device according to claim 1, it is characterized in that: this fixed current controling circuit is made up of an operational amplifier and two transistors, the normal phase input end of operational amplifier connects a divider resistance and is connected to microcomputer control circuit, its inverting input is connected with the load series resistance of rechargeable battery, for input feedback signal.
4, nickel-cadmium/nickel-hydrogen cell charging and discharging device according to claim 1 is characterized in that: the back side of this liquid crystal display circuit is provided with a backlight that is connected on the power end, so that the illumination of liquid crystal display circuit to be provided.
5, nickel-cadmium/nickel-hydrogen cell charging and discharging device according to claim 1, it is characterized in that: this charging voltage testing circuit is formed with a group inte gration circuit and two groups of operational amplifiers that are connected with charged battery voltage and internal reference voltage respectively, sends comparison signal to microcomputer control circuit by two operational amplifiers.
6, nickel-cadmium/nickel-hydrogen cell charging and discharging device according to claim 1 is characterized in that: the panel of this liquid crystal display circuit is provided with three groups of indicator lights of representing indicator light, the saturated indicator light of a battery, a battery short circuit/indicator light that opens circuit, a battery discharging indicator, a charging interval digital display and a plurality of representative electric weight percentages of charging current size respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93107236 CN1030486C (en) | 1993-06-17 | 1993-06-17 | Nickel-cadmium/nickel-hydrogen cell charging and discharging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93107236 CN1030486C (en) | 1993-06-17 | 1993-06-17 | Nickel-cadmium/nickel-hydrogen cell charging and discharging device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1096613A true CN1096613A (en) | 1994-12-21 |
| CN1030486C CN1030486C (en) | 1995-12-06 |
Family
ID=4986609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93107236 Expired - Fee Related CN1030486C (en) | 1993-06-17 | 1993-06-17 | Nickel-cadmium/nickel-hydrogen cell charging and discharging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1030486C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100431239C (en) * | 2001-08-09 | 2008-11-05 | 杨泰和 | Charger for operation of current and voltage divisions by voltage inspection |
| CN101989759A (en) * | 2009-08-03 | 2011-03-23 | 三洋电机株式会社 | Battery charger |
| CN104062590A (en) * | 2013-03-21 | 2014-09-24 | 深圳市海洋王照明工程有限公司 | Battery charging time testing apparatus |
| CN105870524A (en) * | 2016-06-12 | 2016-08-17 | 江苏聚合新能源科技有限公司 | Charging method for prolonging cycle life of metal hydride nickel battery |
| CN111525644A (en) * | 2020-04-30 | 2020-08-11 | 北京东方振动和噪声技术研究所 | Battery management system and battery management method |
-
1993
- 1993-06-17 CN CN 93107236 patent/CN1030486C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100431239C (en) * | 2001-08-09 | 2008-11-05 | 杨泰和 | Charger for operation of current and voltage divisions by voltage inspection |
| CN101989759A (en) * | 2009-08-03 | 2011-03-23 | 三洋电机株式会社 | Battery charger |
| CN104062590A (en) * | 2013-03-21 | 2014-09-24 | 深圳市海洋王照明工程有限公司 | Battery charging time testing apparatus |
| CN105870524A (en) * | 2016-06-12 | 2016-08-17 | 江苏聚合新能源科技有限公司 | Charging method for prolonging cycle life of metal hydride nickel battery |
| CN111525644A (en) * | 2020-04-30 | 2020-08-11 | 北京东方振动和噪声技术研究所 | Battery management system and battery management method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1030486C (en) | 1995-12-06 |
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