CN104092251A - Ni-mh battery and nickel-cadmium battery charging and discharging analyzer and charging and discharging method of ni-mh battery and nickel-cadmium battery charging and discharging analyzer - Google Patents
Ni-mh battery and nickel-cadmium battery charging and discharging analyzer and charging and discharging method of ni-mh battery and nickel-cadmium battery charging and discharging analyzer Download PDFInfo
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Abstract
The invention discloses a ni-mh battery and nickel-cadmium battery charging and discharging analyzer and a charging and discharging method of the ni-mh battery and nickel-cadmium battery charging and discharging analyzer. The ni-mh battery and nickel-cadmium battery charging and discharging analyzer comprises a single-chip microcomputer, an LCD display screen and a switching power supply power supply module, and further comprises a numerical control constant-current charging and discharging circuit module, a USB communication module and a battery voltage collection circuit. The signal output end of the single-chip microcomputer is communicated with a battery trough the numerical control constant-current charging and discharging circuit module. The AN pin of the single-chip microcomputer is communicated with the positive electrode of the battery through the battery voltage collection circuit. Compared with an existing charging and discharging analyzer, the charging function of the ni-mh battery and nickel-cadmium battery charging and discharging analyzer is achieved through intelligent procedures including pre-charging, rapid charging, trickle charging and full charging judgment achieved through the delta V; in addition, a temperature sensor is added so that the working temperature can be sensed in real time, dangers caused by poor battery performance are avoided, and four independent channels can simultaneously work under the condition that the circuit is not changed; all functions of an ordinary ni-mh charger are involved; the intelligent degree is high, and the single-chip microcomputer can monitor all working states in real time.
Description
Technical field
The present invention relates to a kind of analysis by charged and discharged device, relate in particular to a kind of ni-mh, nickel-cadmium cell analysis by charged and discharged device and charging/discharging thereof thereof.
Background technology
The features such as ni-mh, nickel-cadmium cell are used quite universal, and it has and can repeatedly charge, and discharging current is large, Memorability is low are widely used in the electronic products such as electronic toy, cordless telephone, camera.Although ni-mh, nickel-cadmium cell have lot of advantages, because product quality in production process is very different, the charging interval time obviously shortens in use for some time, and user has to, from the new battery of new purchase, cause environmental pollution, customer investment high cost.Often in the middle of discarded battery, there is battery greatly normally to use.Some batteries are to cause charging and discharging currents to weaken because storage time is oversize, can activate electric weight by repeated charge.Other batteries may be empty mark capacity, and user can not understand in time.Native system provides solution for the use battery that user understands battery status, science in time, avoids user's overlapping investment to sink money and also causes environmental pollution.
Summary of the invention
Object of the present invention is just that providing a kind of addresses the above problem, and the convenient various performance parameters of grasping battery of user, long-term untapped battery is carried out to ni-mh, nickel-cadmium cell analysis by charged and discharged device and the charging/discharging thereof thereof of activation manipulation.
To achieve these goals, the technical solution used in the present invention is: a kind of ni-mh, nickel-cadmium cell analysis by charged and discharged device, comprise single-chip microcomputer, LCD display, Switching Power Supply supply module, also comprise numerical control constant current charge-discharge road module, USB communication module, cell voltage Acquisition Circuit, described single-chip microcomputer signal output part is communicated with battery by numerical control constant current charge-discharge road module, and described Chip Microcomputer A N pin is communicated with anode by cell voltage Acquisition Circuit;
As preferably, described numerical control constant current charge-discharge road module is comprised of reference voltage source, D/A converter, control circuit and charge-discharge circuit, and the described reference voltage source signal of telecommunication is electrically connected to charge-discharge circuit by D/A converter, control circuit;
As preferably, described charge-discharge circuit comprises sampling resistor R7, N channel field-effect pipe, P-channel field-effect transistor (PEFT) pipe, and battery to be charged, and described sampling resistor R7, N channel field-effect pipe, P-channel field-effect transistor (PEFT) pipe, battery to be charged are connected successively;
As preferably, described control circuit comprises sampling resistor R2, sampling resistor R3, sampling resistor R4, sampling resistor R6, safe Resistance R5, operational amplifier, described employing sampling resistor R2 one end is electrically connected to reference voltage source, its other end is electrically connected to the positive input terminal of operational amplifier, described sampling resistor R3 one end is connected with D/A converter, its other end is electrically connected to operational amplifier negative input end, described sampling resistor R4 one end is connected with sampling resistor R7 input, its other end is electrically connected to operational amplifier positive input terminal, described sampling resistor R6 one end is connected with sampling resistor R7 output, its other end is electrically connected to operational amplifier negative input end, the output of described operational amplifier is by the N channel field-effect pipe of safe Resistance R5 and charge-discharge circuit, P-channel field-effect transistor (PEFT) pipe is communicated with,
As preferably, described D/A converter is serial four road transducers, is connected to respectively one group of control circuit and charge-discharge circuit on its four paths;
As preferably, also comprise section-type LCD driver module, described single-chip microcomputer is communicated with LCD display by section-type LCD driver module;
As preferably, also comprise host computer, the communication signal output of described single-chip microcomputer is communicated with host computer by USB interface communication module;
As preferably, on described single-chip microcomputer, be also provided with keyboard circuit module, operating state indicating module, temperature sensor module, exceptional state alarm module, described keyboard circuit module, operating state indicating module, temperature sensor module, exceptional state alarm module are communicated with single-chip microcomputer respectively.
A charging/discharging thereof for ni-mh, nickel-cadmium cell analysis by charged and discharged device, method step is as follows,
A. system start-up performance initialization, the input of opens interrupters function, next each functional module function of recursive call; In described step a, after system starts, opening timing is interrupted and serial ports receive interruption pattern, when system occurs to interrupt, first judge interrupt type, if serial ports receive interruption, carries out resolution data, resolve host computer and send to the mode of operation of native system and operating current that order is set, and carry out relative set program, then recover interrupt spot; If Interruption, whether first judgement regularly reaches 1 second, if reach, does not return, if reach, carries out operating time calculating, then by electric current accumulation calculating discharge capacity of the cell, then by single-chip microcomputer asynchronous serial port, sends data, then returns;
B. start cell voltage capture program, the analog quantity of cell voltage is converted to corresponding digital quantity, and detect whether pack battery into, if pack battery into, by channel reset, in LCD display, do not show; If packed battery into, carry out the detection of battery abnormal work, whether the voltage, internal resistance, the capacity that detect battery exceed system allowed band, and whether the operating time overlength, and whether working temperature is higher;
C. when battery operated while there is unusual condition, exception handler will stop work at present by force, and report to the police with acoustooptic form, until battery abnormality gets rid of, and show in LCD display; When unusual condition does not appear in battery, system will discharge and recharge accordingly and control and parameter detecting according to the mode of operation arranging, and shows in LCD display;
After d.LCD display screen shows, carry out working station indicator demonstration, for showing the operating state of respective channel battery;
E. open again keyboard detection setting program, trailing edge and the rising edge of the signal of telecommunication add debounce dynamic program for calling corresponding setting program when pressing and discharging by detecting keyboard button.
Compared with prior art, the invention has the advantages that: the present invention has quick charge, discharge examination, three kinds of mode of operations of cyclic activation, and the function of Dynamic Selection charging and discharging currents size, and user just can check battery operated state by LCDs.For more professional user, also provide host computer procedure, can check operating state by the online enforcement of computer, and represent with diagrammatic form, data are saved to the machine for analyzing purposes.The charge function of native system adopts precharge, quick charge, trickle charge ,-Δ V judgement the intelligent program such as to be full of, and has added in addition temperature sensor real-time perception working temperature, avoids causing because battery performance is bad danger.The present invention has with low cost, can realize four autonomous channels and work simultaneously in the situation that not changing circuit; Powerful, to comprise common nickel-hydrogen charger repertoire; Degree of intelligence is high, and single-chip microcomputer is monitored the features such as work in every state in real time.The popularization of this product can be country and reduces a large amount of social cost.
Accompanying drawing explanation
Fig. 1 is system architecture diagram of the present invention;
Fig. 2 is switch voltage-stabilizing circuit schematic diagram;
Fig. 3 is cell voltage acquisition module circuit theory diagrams;
Fig. 4 is numerical control constant current charge-discharge circuit theory diagrams;
Fig. 5 is section-type LCD display driver moding circuit schematic diagram;
Fig. 6 is keyboard circuit schematic diagram;
Fig. 7 is status indicator lamp modular circuit schematic diagram
Fig. 8 is USB communication module circuit theory diagrams;
Fig. 9 is system principle diagram of the present invention;
The theory diagram of Figure 10 interrupt function input of the present invention;
Figure 11 is battery charging procedure flow chart of the present invention.
Embodiment
Below the invention will be further described.
Embodiment: a kind of ni-mh, nickel-cadmium cell analysis by charged and discharged device, as Fig. 1, comprise single-chip microcomputer, LCD display, Switching Power Supply supply module, also comprise numerical control constant current charge-discharge road module, USB communication module, cell voltage Acquisition Circuit, described single-chip microcomputer signal output part is communicated with battery by numerical control constant current charge-discharge road module, and described Chip Microcomputer A N pin is communicated with anode by cell voltage Acquisition Circuit.Described numerical control constant current charge-discharge road module is comprised of reference voltage source, D/A converter, control circuit and charge-discharge circuit, and the described reference voltage source signal of telecommunication is electrically connected to charge-discharge circuit by D/A converter, control circuit.
1. switching circuit module
Native system adopts the switching circuit that ACT30 is core, operating frequency 65KHz.This circuit has that circuit is simple, input voltage is wide, efficiency high, is beneficial to very much device miniaturization.Error-detecting and feedback circuit that voltage stabilizing partly adopts PC817 optical coupler and TL431 to form.Q2, R11, R12 forms output current limiting circuit, and when output current surpasses upper prescribing a time limit, Q2 is conducting to ground, and the feedback current of optocoupler will make ACT30 enter the pattern of having the hiccups.Output+5V provides operating voltage to single-chip microcomputer, LCD display, digital-control constant-flow source, and+2.5V provides power supply for battery charges.Switch voltage-stabilizing circuit schematic diagram as shown in Figure 2
2. single-chip microcomputer and cell voltage acquisition module
PIC16F886 single-chip microcomputer is 8 middle-grade single-chip microcomputers that Microchip company produces, and adopts 14 reduced instruction sets, only has 35 instructions.Inside is integrated with 11 road 10-bit high speed D/A conversions, EEPROM, asynchronous serial communication circuit, electrify restoration circuit etc.Its minimum system only need connect crystal oscillating circuit and power supply gets final product work.LM385 is standard of precision voltage source provides 2.5V reference voltage for D/A converter.The positive pole of sampling battery carries out D/A conversion by connecting Chip Microcomputer A N pin.This circuit conversion precision is 2.44mV.Single Chip Microcomputer (SCM) system and cell voltage acquisition module schematic diagram are as shown in Figure 3.
3. numerical control constant current charge-discharge circuit
TLC5620 is 8, four tunnel of serial input D/A converter, and whole charge-discharge circuit can be integrated in D/A converter, able to programmely realizes 1 to 2 times of reference voltage output area, adopts LM385 that 2.5V standard of precision voltage source is provided.Resistance R 2, R3, R4, R6, R7 sampling resistor, N channel field-effect pipe Q3, P-channel field-effect transistor (PEFT) pipe Q4, operational amplifier U3 form constant-current source circuit, this circuit has been realized current sample, amplifier, has relatively been fed back three functions, can accurately realize positive and negative constant flow source and discharge and recharge control.According to the concept of operational amplifier virtual earth, can draw (V
r7-V) * 10=V
dACA-2.5, by formula, can be obtained the voltage (V at resistance R 7 two ends
r7-V) only and V
dACArelevant, V
r7for the earthed voltage value on resistance R 7 contact resistance R4 wires, due to without negative supply, the current potential of this position is magnitude of voltage; V is battery both end voltage to be charged, V
dACAfor TLC5620 the 12nd pin output voltage.So electric current I=(V of constant-current source
dACA-2.5) * R7/10.Multiplication factor is conducive to V
dACAcontrol accurate.Work as V
dACAduring higher than 2.5V, power supply passes through Q1, R7 to battery BAT1 constant current charge; Work as V
dACAduring lower than 2.5V, battery BAT1 is by R7, Q4 constant-current discharge.Single-chip microcomputer writes 8 position digital signals by J1 serial and latchs.When system works is during in charged state, TLC5620 adopts the output of twice reference voltage, and output area is 0-5V voltage, and system only adopts the voltage of 2.5V-5V scope, 128 grades of resolution.When system works is during in discharge condition, TLC5620 adopts one times of reference voltage output, and output area is 0-2.5V, and 256 grades of resolution can accurate Calculation discharge electricity amount.In this circuit, amplifier adopts LM324, can realize the battery charging and discharging of four autonomous channels and control, and circuit is extremely simple.Single channel numerical control constant current charge-discharge circuit theory diagrams as shown in Figure 4.
Its work cardinal principle is: use 8 Bits Serial D/A converters as control unit, use 2.5V as the reference level of D/A output analog quantity.Single-chip microcomputer sends 8 bit-serial digital signals by I/O pin to D/A converter, from DACA pin, exports the constant-current source circuit that corresponding analog voltage drives operational amplifier to form.The operation principle of the constant-current source circuit that operational amplifier forms is V
r7respectively by resistance R 4 (10K), resistance R 2 (100K) is connected to the positive input terminal V of operational amplifier with 2.5V reference voltage
+, according to the positive input terminal V of operational amplifier
+electric current is almost nil, can obtain (V
r7-V
+)/10=(V
+-2.5)/100; V
dACArespectively by resistance R 3 (100K), R6 (10K) is connected to the negative input end V of operational amplifier with cell voltage V
-, according to the negative input end V of operational amplifier
-electric current is almost nil, can obtain (V
dACA-V
-)/100=(V
--V)/10; According to the concept V of operational amplifier virtual earth
+=V
-bring in above-mentioned formula, can obtain (V
r7-V) * 10=V
dACA-2.5.
Ni-mh, NI-G discharge and recharge detector need to realize constant current charge (forward constant-current source) and constant-current discharge (negative sense constant-current source) function to battery.Utilize prior art to realize can just can be negative constant-current source circuit must adopt two to overlap independently circuit and complete, circuit and program are all very complicated, small product size is large, reliability is low.For simplifying the complexity of circuit and reduction program, the numerical control constant current charge-discharge circuit of invention adopts four-way 8 Bits Serial D/A converters as control unit, and a four-operational amplifier can be realized four way control constant current charge-discharge functions simultaneously.Circuit is used element few, has the advantages such as control precision is high, safe and reliable, production debugging is easy.
4. section-type LCD driver module
In the equipment course of work, by LCD, show in real time the information such as mode of operation, operating current, voltage, internal resistance, capacity, operating time, displaying contents is controlled in 128 sections, therefore selects HT1621 as display driver unit.This integrated circuit has 1/3 bigoted ratio, 1/4 duty ratio, and 32 * 4 sections of outputs, can meet demonstration needs.In this circuit, HT1621 adopts internal oscillator source, and OSCO and OSCI pin are unsettled.Single-chip microcomputer writes serial data by J1 to HT1621, SEG[0-31], COM[0-3] produce corresponding bias voltage and drive LCD display.HT1621 also has audio output function, sends order and can by 11,12 pins, produce the audio-signal-driven buzzer of 2KHz or 4KHz, as shown in Figure 5 by single-chip microcomputer.
5. keyboard circuit
The operation of native system all functions only needs three buttons, can complete the functions such as cell channel selection, mode of operation selection, operating current selection.This circuit adopts stand-alone keypad to detect, and is connected directly to 3 I/O pins of single-chip microcomputer.When button is not pressed, single-chip microcomputer pin is high level; When button is pressed, respective pins becomes low level.Software systems can judge whether that by I/O pin trailing edge and rising edge button presses and discharge.Keyboard circuit schematic diagram as shown in Figure 6.
6. status indicator lamp module
The PIC16F886 single-chip processor i/o mouth that native system is used has high level, low level, three kinds of states of high resistant.Pull current and sink current all can reach 20mA, can be used for direct driving LED.This circuit adopts two-way red green diode, and one end is by current-limiting resistance connecting valve power supply+2.5V voltage, and the other end connects the I/O mouth of single-chip microcomputer.Red light emitting diodes conducting when single-chip microcomputer output low level; Green LED conducting when output high level; When output high-impedance state, light-emitting diode extinguishes.Status indicator lamp module principle figure as shown in Figure 7.
7.USB communication module
USB communication module in native system is by microcontroller serial port asynchronous communication, to turn the pattern of USB.CH340G is that serial ports TTL turns USB level chip.Single-chip microcomputer TX, RX pin directly connect 3,2 pins of CH340G, 5,6 pin output D+, D-USB signal.USB communication module schematic diagram as shown in Figure 8.
A charging/discharging thereof for ni-mh, nickel-cadmium cell analysis by charged and discharged device, as shown in Figure 9, method step is as follows,
A. system start-up performance initialization, the input of opens interrupters function, next each functional module function of recursive call;
B. start cell voltage capture program, the analog quantity of cell voltage is converted to corresponding digital quantity, and detect whether pack battery into, if pack battery into, by channel reset, in LCD display, do not show; If packed battery into, carry out the detection of battery abnormal work, whether the voltage, internal resistance, the capacity that detect battery exceed system allowed band, and whether the operating time overlength, and whether working temperature is higher;
C. when battery operated while there is unusual condition, exception handler will stop work at present by force, and report to the police with acoustooptic form, until battery abnormality gets rid of, and show in LCD display; When unusual condition does not appear in battery, system will discharge and recharge accordingly and control and parameter detecting according to the mode of operation arranging, and shows in LCD display;
After d.LCD display screen shows, carry out working station indicator demonstration, for showing the operating state of respective channel battery;
E. open again keyboard detection setting program, trailing edge and the rising edge of the signal of telecommunication add debounce dynamic program for calling corresponding setting program when pressing and discharging by detecting keyboard button.
In described step a, after system starts, opening timing is interrupted and serial ports receive interruption pattern, when system occurs to interrupt, first judge interrupt type, if serial ports receive interruption, carries out resolution data, resolve host computer and send to the mode of operation of native system and operating current that order is set, and carry out relative set program, then recover interrupt spot; If Interruption, whether first judgement regularly reaches 1 second, if reach, does not return, if reach, carry out operating time calculating, then by electric current accumulation calculating discharge capacity of the cell, then by single-chip microcomputer asynchronous serial port, send data, then return, as shown in figure 10.
Working method is as follows,
(1) charge mode:
Ni-mh in passage, nickel-cadmium cell are carried out to constant current charge operation, adopt three stage of Single-chip Controlling charge mode (being precharge, quick charge, trickle charge).As shown in figure 11, precharge, quick charge, trickle charge function mainly send the different current value of digital signal change constant-current source by single-chip microcomputer to digital-control constant-flow source circuit and realize; In charging process, detect in real time the running parameters such as cell voltage, charging current, charging interval, commonly use-Δ V of employing industry judges whether battery is full of, it is mainly that the voltage digital amount that is recharged battery by D/A converter collection is sent into single-chip microcomputer that-Δ V judgement is full of function, by trace routine judgement, be whether cell voltage occurs declining, when occurring declining, show that battery is full of, enter trickle charge pattern.Occur when abnormal that equipment quits work automatically, and the corresponding status indicator lamp flicker of passage is reminded.
(2) detecting pattern:
Ni-mh in passage, nickel-cadmium cell are carried out to constant-current discharge operation.In discharge process Real-time Collection cell voltage, discharging current, discharge time etc. running parameter, and draw discharge capacity and the internal resistance of cell size of battery.Corresponding passage indicator light turns lamp after discharge off, (to reach final discharging voltage), and passage quits work.If there is the situation of passage operation irregularity, the passage indicator light reminding user that can glimmer, equipment quits work.
(3) circulation pattern:
Ni-mh in passage, nickel-cadmium cell are first carried out to constant-current discharge operation, and mode of operation is now equal to " detecting pattern ", when battery reaches after final voltage, enters constant current charge state, and mode of operation is now equal to " charge mode ".
(4) Dynamic Selection charging and discharging currents:
This equipment adopts digital-control constant-flow source technology, and the digital signal that can export by MCU dynamically changes charging and discharging currents size.The resolution of constant-current source electric current is determined by D/A switching network completely.
Mode of operation (charge mode, detecting pattern, enable mode) and the operating current size (charge and discharge size of current) of battery are set by keyboard circuit.Single-chip microcomputer is charged, detects or activate battery by numerical control constant current charge-discharge circuit.The parameter of the course of work shows in real time by lcd screen, by USB communication module, sends to host computer.
Under charge mode, single-chip microcomputer Real-time Collection voltage data, when cell voltage carries out precharge during lower than 1.2V; When the cell voltage current value that equipment is set according to user during higher than 1.2V carries out constant current charge; When cell voltage appearance-Δ V, carry out trickle charge.Equipment is presented at battery voltage information, mode of operation, operating current, operating time in lcd screen in real time.
Under detecting pattern, single-chip microcomputer Real-time Collection voltage data, when cell voltage, set electric current during higher than final voltage (0.9V) according to user and carry out constant-current discharge, in discharge process, system is calculated discharge electricity amount and the internal resistance of cell according to discharge time, discharging current; When cell voltage during lower than final voltage (0.9V) system quit work, user can be from screen the information such as read work pattern, operating current, battery capacity, the internal resistance of cell, operating time.
Under enable mode, single-chip microcomputer first to battery according to detecting pattern work, after battery reaches final voltage, according to charge mode, carry out work.Corresponding data during work is presented on LCD screen.
The mode that system turns USB by asynchronous serial port in the course of the work sends data to host computer procedure, host computer shows battery operated state in real time, displaying contents comprises mode of operation, operating current, voltage, internal resistance, capacity, time, and represents with diagrammatic form, and data can be saved to computer.
The all functions that this product comprises general ni-mh, NI-G quick charger, and circuit is simple, and with low cost, be the substitute products of family's ni-mh, NI-G charger.There is following characteristics:
(1) digital-control constant-flow source circuit
This circuit adopts a D/A switching network, an operational amplifier, a N channel field-effect pipe and a P-channel field-effect transistor (PEFT) pipe, the in the situation that of single supply, just realized can just can be negative constant-current source circuit, circuit is extremely simple, greatly reduces production cost, with small product size.
(2) feature richness, simple to operate
This equipment adopts 8 single-chip microcomputers to manage external circuit, and program designs according to battery industry standard completely.Function is very abundant, and user's operation is very simple, and only three buttons just can complete all operations.In R&D process, focus on strengthening software capability, reduce hardware and drop into, production cost is very cheap.After later stage product up-gradation, user only needs update software just can realize corresponding function.
(3) can with computer on-line real-time
For advanced level user, this product provides ipc monitor and setting program.User can be connected to computer by serial ports or USB, by host computer, changes in real time channel status (comprising mode of operation setting and charging and discharging currents selection).Can check by the display window of host computer the work state information of each passage, sampled data can synchronously be stored in the machine, is convenient to the use with post analysis simultaneously.
(4) by computer calibrator (-ter) unit
This product needs the parameter of calibration to reach 50 in process of production, and traditional mode of production industry is manually to calibrate by additional variable-resistance mode, well imagines that the volume of product will increase, and reliability will reduce, and cost of labor also so greatly increases.This product has merged computer automatic calibration function, and production firm only need to be connected to computer by product, by simple a few step settings, just can complete calibration, and accuracy rate improves greatly, has reduced human cost and danger simultaneously.
(5) autonomous channel operation, expansion capacity is extremely strong
This product can be realized four passages or multichannel is worked simultaneously, between passage, does not interfere with each other.Corresponding function can be upgraded by software very like a cork.By proper transformation hardware and software parameter, just can realize the exploitation for the analysis by charged and discharged equipment of the multiple battery such as lithium battery, lead acid accumulator.
Above a kind of ni-mh provided by the present invention, nickel-cadmium cell analysis by charged and discharged device have been carried out to detailed introduction, applied specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, to change of the present invention and improvement, will be possible, and can not exceed design and the scope of accessory claim defined, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. a ni-mh, nickel-cadmium cell analysis by charged and discharged device, comprise single-chip microcomputer, LCD display, Switching Power Supply supply module, it is characterized in that: also comprise numerical control constant current charge-discharge road module, USB communication module, cell voltage Acquisition Circuit, described single-chip microcomputer signal output part is communicated with battery by numerical control constant current charge-discharge road module, and described Chip Microcomputer A N pin is communicated with anode by cell voltage Acquisition Circuit.
2. a kind of ni-mh according to claim 1, nickel-cadmium cell analysis by charged and discharged device, it is characterized in that: described numerical control constant current charge-discharge road module is comprised of reference voltage source, D/A converter, control circuit and charge-discharge circuit, and the described reference voltage source signal of telecommunication is electrically connected to charge-discharge circuit by D/A converter, control circuit.
3. a kind of ni-mh according to claim 2, nickel-cadmium cell analysis by charged and discharged device, it is characterized in that: described charge-discharge circuit comprises sampling resistor R7, N channel field-effect pipe, P-channel field-effect transistor (PEFT) pipe, and battery to be charged, described sampling resistor R7, N channel field-effect pipe, P-channel field-effect transistor (PEFT) pipe, battery to be charged are connected successively.
4. a kind of ni-mh according to claim 3, nickel-cadmium cell analysis by charged and discharged device, it is characterized in that: described control circuit comprises sampling resistor R2, sampling resistor R3, sampling resistor R4, sampling resistor R6, safe Resistance R5, operational amplifier, described employing sampling resistor R2 one end is electrically connected to reference voltage source, its other end is electrically connected to the positive input terminal of operational amplifier, described sampling resistor R3 one end is connected with D/A converter, its other end is electrically connected to operational amplifier negative input end, described sampling resistor R4 one end is connected with sampling resistor R7 input, its other end is electrically connected to operational amplifier positive input terminal, described sampling resistor R6 one end is connected with sampling resistor R7 output, its other end is electrically connected to operational amplifier negative input end, the output of described operational amplifier is by the N channel field-effect pipe of safe Resistance R5 and charge-discharge circuit, P-channel field-effect transistor (PEFT) pipe is communicated with.
5. a kind of ni-mh according to claim 1, nickel-cadmium cell analysis by charged and discharged device, is characterized in that: described D/A converter is serial four road transducers, is connected to respectively one group of control circuit and charge-discharge circuit on its four paths.
6. a kind of ni-mh according to claim 1, nickel-cadmium cell analysis by charged and discharged device, is characterized in that: also comprise section-type LCD driver module, described single-chip microcomputer is communicated with LCD display by section-type LCD driver module.
7. a kind of ni-mh according to claim 1, nickel-cadmium cell analysis by charged and discharged device, is characterized in that: also comprise host computer, the communication signal output of described single-chip microcomputer is communicated with host computer by USB interface communication module.
8. a kind of ni-mh according to claim 1, nickel-cadmium cell analysis by charged and discharged device, it is characterized in that: on described single-chip microcomputer, be also provided with keyboard circuit module, operating state indicating module, temperature sensor module, exceptional state alarm module, described keyboard circuit module, operating state indicating module, temperature sensor module, exceptional state alarm module are communicated with single-chip microcomputer respectively.
9. a charging/discharging thereof for ni-mh, nickel-cadmium cell analysis by charged and discharged device, is characterized in that: method step is as follows,
A. system start-up performance initialization, the input of opens interrupters function, next each functional module function of recursive call;
B. start cell voltage capture program, the analog quantity of cell voltage is converted to corresponding digital quantity, and detect whether to pack battery into, if do not pack battery into or battery is removed, system channel resets, and calls operating state indicating module and extinguish LED light; If packed battery into, carry out the detection of battery abnormal work, whether the voltage, internal resistance, the capacity that detect battery exceed system allowed band, and whether the operating time overlength, and whether working temperature is higher;
C. when battery operated while there is unusual condition, exception handler will stop work at present by force, and report to the police with acoustooptic form, until battery abnormality gets rid of, and show in LCD display; When unusual condition does not appear in battery, system will discharge and recharge accordingly and control and parameter detecting according to the mode of operation arranging, and shows in LCD display;
After d.LCD display screen shows, carry out working station indicator demonstration, for showing the operating state of respective channel battery;
E. open again keyboard detection setting program, trailing edge and the rising edge of the signal of telecommunication when pressing and discharging by detecting keyboard button, and add debounce dynamic program for calling corresponding function setting program.
10. the charging/discharging thereof of a kind of ni-mh, nickel-cadmium cell analysis by charged and discharged device according to claim 9, it is characterized in that: in described step a, after system starts, opening timing is interrupted and serial ports receive interruption pattern, when system occurs to interrupt, first judge interrupt type, if serial ports receive interruption, carry out resolution data, resolve host computer and send to the mode of operation of native system and operating current that order is set, and carry out relative set program, then recover interrupt spot; If Interruption, whether first judgement regularly reaches 1 second, if reach, does not return, if reach, carries out operating time calculating, then by electric current accumulation calculating discharge capacity of the cell, then by single-chip microcomputer asynchronous serial port, sends data, then returns.
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| CN201420320740.9U CN204103515U (en) | 2014-06-16 | 2014-06-16 | A kind of ni-mh, nickel-cadmium cell analysis by charged and discharged device |
| CN201410267584.9A CN104092251B (en) | 2014-06-16 | 2014-06-16 | Ni-mh battery and nickel-cadmium battery charging and discharging analyzer and charging and discharging method of ni-mh battery and nickel-cadmium battery charging and discharging analyzer |
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| CN201420320740.9U CN204103515U (en) | 2014-06-16 | 2014-06-16 | A kind of ni-mh, nickel-cadmium cell analysis by charged and discharged device |
| CN201410267584.9A CN104092251B (en) | 2014-06-16 | 2014-06-16 | Ni-mh battery and nickel-cadmium battery charging and discharging analyzer and charging and discharging method of ni-mh battery and nickel-cadmium battery charging and discharging analyzer |
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| CN104092251A true CN104092251A (en) | 2014-10-08 |
| CN104092251B CN104092251B (en) | 2017-01-11 |
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| CN201410267584.9A Expired - Fee Related CN104092251B (en) | 2014-06-16 | 2014-06-16 | Ni-mh battery and nickel-cadmium battery charging and discharging analyzer and charging and discharging method of ni-mh battery and nickel-cadmium battery charging and discharging analyzer |
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Cited By (5)
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| CN106153682A (en) * | 2016-08-31 | 2016-11-23 | 陈戈 | A kind of municipal rail train battery solution testing device and method of testing thereof |
| CN106972557A (en) * | 2017-03-18 | 2017-07-21 | 海汽电子技术芜湖股份有限公司 | Motor vehicle module NI MH battery intelligents charging circuits and charging implementation method |
| CN107394838A (en) * | 2017-07-24 | 2017-11-24 | 浙江工业大学 | A kind of method and device of small-sized Ni-Cr battery management of charging and discharging |
| CN110752648A (en) * | 2019-12-02 | 2020-02-04 | 东莞市石龙富华电子有限公司 | Intelligent battery charging method and circuit for detecting negative voltage increment |
| CN112578288A (en) * | 2020-12-04 | 2021-03-30 | 沈阳航天新光集团有限公司 | Battery charge-discharge recorder system |
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| CN204103515U (en) * | 2014-06-16 | 2015-01-14 | 叶林松 | A kind of ni-mh, nickel-cadmium cell analysis by charged and discharged device |
| CN105576770A (en) * | 2016-02-26 | 2016-05-11 | 厦门大学嘉庚学院 | Digital lithium battery charging and discharging device |
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Also Published As
| Publication number | Publication date |
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| CN204103515U (en) | 2015-01-14 |
| CN104092251B (en) | 2017-01-11 |
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