CN104092251B - 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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- CN104092251B CN104092251B CN201410267584.9A CN201410267584A CN104092251B CN 104092251 B CN104092251 B CN 104092251B CN 201410267584 A CN201410267584 A CN 201410267584A CN 104092251 B CN104092251 B CN 104092251B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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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, particularly relate to a kind of ni-mh, nickel-cadmium cell analysis by charged and discharged
Device and charging/discharging thereof thereof.
Background technology
Ni-mh, nickel-cadmium cell use the most universal, and it has and can repeatedly charge, and discharge current is big, note
The features such as the property recalled is low are widely used in the electronic products such as electronic toy, wireless phone, photographing unit.Although nickel
Hydrogen, nickel-cadmium cell have a lot of advantages, but due in production process product quality very different, using one
After the section time, the charging interval time substantially shortens, and user has to, from newly purchased new battery, cause environmental pollution,
Customer investment high cost.Often having battery greatly in the middle of discarded battery is normally to use
's.Some batteries are to cause charging and discharging currents to weaken owing to storage time is oversize, can pass through repeated charge
Activate electricity.Other batteries are probably empty mark capacity, and user can not understand in time.Native system be user and
Time understand battery status, the use battery of science and provide solution, it is to avoid user's overlapping investment waste gold
Money also results in environmental pollution.
Summary of the invention
The purpose of the present invention is that offer one solves the problems referred to above, and user conveniently grasps the every of battery
Performance parameter, carries out the ni-mh of activation manipulation, nickel-cadmium cell analysis by charged and discharged device to long-term untapped battery
And charging/discharging thereof.
To achieve these goals, the technical solution used in the present invention is: a kind of ni-mh, nickel-cadmium cell charge and discharge
Electroanalyzer, including single-chip microcomputer, LCD display, Switching Power Supply supply module, also includes numerical control constant current charge and discharge
Circuit module, USB communication module, battery voltage acquisition circuit, described single-chip microcomputer signal output part passes through numerical control
Constant current charge-discharge road module and cell communication, described Chip Microcomputer A N pin is by battery voltage acquisition circuit and electricity
Pond positive pole connection；
As preferably, described numerical control constant current charge-discharge road module is by reference voltage source, D/A converter, control electricity
Road and charge-discharge circuit composition, the described reference voltage source signal of telecommunication is by D/A converter, control circuit and fills
Discharge circuit electrically connects；
As preferably, described charge-discharge circuit includes sampling resistor R7, N-channel field effect transistor, P-channel field effect
Ying Guan, and battery to be charged, described sampling resistor R7, N-channel field effect transistor, P-channel field-effect transistor (PEFT) pipe,
Battery to be charged is sequentially connected in series；
As preferably, described control circuit includes sampling resistor R2, sampling resistor R3, sampling resistor R4, adopts
Sample resistance R6, safe Resistance R5, operational amplifier, described employing sampling resistor R2 one end and reference voltage
Source electrically connect, its other end electrically connects with the positive input terminal of operational amplifier, described sampling resistor R3 one end and
D/A converter connects, and its other end electrically connects with operational amplifier negative input end, described sampling resistor R4 mono-
End be connected with sampling resistor R7 input, its other end electrically connects with operational amplifier positive input terminal, described in adopt
Sample resistance R6 one end is connected with sampling resistor R7 outfan, its other end and operational amplifier negative input end electricity
Connecting, the outfan of described operational amplifier is by the N-channel field effect of safe Resistance R5 with charge-discharge circuit
The connection of pipe, P-channel field-effect transistor (PEFT) pipe；
As preferably, described D/A converter is serial four road transducer, and its four paths is connected to one respectively
Group control circuit and charge-discharge circuit；
As preferably, also including that section-type LCD drives module, described single-chip microcomputer drives module by section-type LCD
Connect with LCD display；
As preferably, also including host computer, the communication signal outfan of described single-chip microcomputer is led to by USB interface
News module connects with host computer；
As preferably, described single-chip microcomputer is additionally provided with keyboard circuit module, duty indicating module, temperature
Sensor assembly, exceptional state alarm module, described keyboard circuit module, duty indicating module, temperature
Degree sensor assembly, exceptional state alarm module connect with single-chip microcomputer respectively.
A kind of ni-mh, the charging/discharging thereof of nickel-cadmium cell analysis by charged and discharged device, method step is as follows,
A. system start-up function initializes, and opens interrupters function inputs, each function mould of following recursive call
Block function；In described step a, after system start-up, opening timing is interrupted and serial ports receives interrupt mode, when being
When system occurs to interrupt, first judge interrupt type, interrupt if serial ports receives, carry out resolving data, in parsing
Position machine is sent to mode of operation and the operating current setting command of native system, and performs relative set program, so
Rear recovery interrupt spot；If Interruption, first judge whether timing reaches 1 second, if not up to, returning,
If reaching, it is operated Time Calculation, then by electric current accumulation calculating discharge capacity of the cell, then by single
Sheet machine asynchronous serial port sends data, is then back to；
B. start battery voltage acquisition program, the analog quantity of cell voltage is converted to the digital quantity of correspondence, and
Detecting whether to load battery, being shown at LCD display by channel reset if not loading battery；If
Loading battery, then carry out battery abnormal work detection, whether the detection voltage of battery, internal resistance, capacity exceed
System allowed band, working time whether overlength, operating temperature is the most higher；
C. when battery operated unusual condition occurs time, exception handler by force termination work at present, and with
Acoustooptic form is reported to the police, until battery abnormality is got rid of, and shows at LCD display；When battery not
When there is unusual condition, system will carry out corresponding charge and discharge control and parameter inspection according to the mode of operation arranged
Survey, and show at LCD display；
After d.LCD display screen shows, it is operated status indicator lamp and shows, be used for showing respective channel
The duty of battery；
E. it is then turned on keyboard detection and program is set, when pressing by detection keyboard button and discharge under the signal of telecommunication
Fall edge and rising edge also add Key dithering program and are used for calling and arrange program accordingly.
Compared with prior art, it is an advantage of the current invention that: the present invention have quick charge, discharge examination,
Three kinds of mode of operations of cyclic activation, and dynamically select the function of charging and discharging currents size, user passes through liquid crystal
Display screen just can check cell operating status.Host computer procedure, Ke Yitong are additionally provided for more professional user
Crossing the online enforcement of computer and check duty, and represent in graphical form, data preserve to the machine for analyzing
On the way.The charge function of native system uses precharge, quick charge, trickle charge ,-Δ V to judge intelligence such as being full of
Energy program, additionally adds temperature sensor real-time perception operating temperature, it is to avoid make because battery performance is bad
Become danger.The present invention has with low cost, can realize four autonomous channels same in the case of not changing circuit
Time work；Powerful, comprise the repertoire of common nickel-hydrogen charger；Degree of intelligence is high, and single-chip microcomputer is real
Time the monitoring feature such as work in every state.The popularization of this product can be that country reduces a large amount of social cosies.
Accompanying drawing explanation
Fig. 1 is present system structured flowchart；
Fig. 2 is switch voltage-stabilizing circuit schematic diagram；
Fig. 3 is battery voltage acquisition modular circuit schematic diagram；
Fig. 4 is numerical control constant current charge-discharge circuit theory diagrams；
Fig. 5 is that section-type LCD display drives 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 present system theory diagram；
The theory diagram of Figure 10 interrupt function of the present invention input；
Figure 11 is battery charging procedure flow chart of the present invention.
Detailed description of the invention
The invention will be further described below.
Embodiment: a kind of ni-mh, nickel-cadmium cell analysis by charged and discharged device, such as Fig. 1, shows including single-chip microcomputer, LCD
Display screen, Switching Power Supply supply module, also include numerical control constant current charge-discharge road module, USB communication module, battery
Voltage collection circuit, described single-chip microcomputer signal output part passes through numerical control constant current charge-discharge road module and cell communication,
Described Chip Microcomputer A N pin is connected with anode by battery voltage acquisition circuit.Described numerical control constant current charge and discharge
Circuit module is made up of reference voltage source, D/A converter, control circuit and charge-discharge circuit, described benchmark electricity
The potential source signal of telecommunication is electrically connected with charge-discharge circuit by D/A converter, control circuit.
1. on-off circuit module
Native system uses ACT30 to be the on-off circuit of core, operating frequency 65KHz.This circuit has circuit letter
List, input voltage width, efficiency high, be especially advantageous for device miniaturization.Voltage stabilization part uses PC817
Photo-coupler and TL431 composition error-detecting and feedback circuit.Q2, R11, R12 composition output electric current limit
Circuit processed, when exporting electric current and exceeding the upper limit, Q2 is conducting to ground, and the feedback current of optocoupler will make ACT30 enter
Enter pattern of having the hiccups.Outfan+5V provides running voltage ,+2.5V to single-chip microcomputer, LCD display, digital-control constant-flow source
Power supply is provided for battery charging.Switch voltage-stabilizing circuit schematic diagram is as shown in Figure 2
2. single-chip microcomputer and battery voltage acquisition module
PIC16F886 single-chip microcomputer is 8 middle-grade single-chip microcomputers that Microchip company produces, and uses 14 essences
Letter instruction system, only 35 instructions.It is internally integrated 11 road 10-bit high speed D/A to change, EEPROM,
Asynchronous serial communication circuit, electrification reset circuit etc..Its minimum system only need to connect crystal oscillating circuit and power supply is
Can work.LM385 is that standard of precision voltage source provides 2.5V reference voltage for D/A converter.Sampling battery
Positive pole by connect Chip Microcomputer A N pin carry out D/A conversion.This circuit conversion precision is 2.44mV.Monolithic
Machine system and battery voltage acquisition module principle figure are as shown in Figure 3.
3. numerical control constant current charge-discharge circuit
TLC5620 is 8, serial input four tunnel D/A converter, and whole charge-discharge circuit can be integrated into D/A and turn
In parallel operation, able to programme realize 1 to 2 times of reference voltage output area, use LM385 to provide 2.5V precision electricity
Pressure a reference source.Resistance R2, R3, R4, R6, R7 sampling resistor, N-channel field effect transistor Q3, P-channel field
Effect pipe Q4, operational amplifier U3 form constant-current source circuit, this circuit realiration current sample, amplifier,
Relatively three functions of feedback, can accurately realize positive and negative constant flow source charge and discharge control.According to operational amplifier virtual earth
Concept, (V can be drawnR7-V) × 10=VDACA-2.5, formula can obtain the voltage (V at resistance R7 two endsR7-
V) only and VDACARelevant, VR7The ground voltage value on resistance R4 wire is connected, due to without negative electricity for resistance R7
Source, the current potential of this position is magnitude of voltage；V is battery both end voltage to be charged, VDACAFor TLC5620 the 12nd
Pin output voltage.Therefore the electric current I=(V of constant-current sourceDACA-2.5)×R7/10.Amplification is conducive to
VDACAControl accurate.Work as VDACADuring higher than 2.5V, power supply passes through Q1, R7 to battery BAT1 constant-current charge；
Work as VDACADuring less than 2.5V, battery BAT1 passes through R7, Q4 constant-current discharge.Single-chip microcomputer is serially written by J1
8 position digital signals latch.When system works in charged state, TLC5620 uses twice reference voltage
Output, output area is 0-5V voltage, and system is only with the voltage of 2.5V-5V scope, resolution 128 grades.
When system works in discharge condition, TLC5620 uses one times of reference voltage output, and output area is 0-2.5V,
Resolution 256 grades can accurately calculate discharge electricity amount.In this circuit, amplifier uses LM324, can realize four independences
The battery charging and discharging of passage controls, and circuit is extremely simple.Single channel numerical control constant current charge-discharge circuit theory diagrams are such as
Shown in Fig. 4.
Its work cardinal principle is: uses 8 Bits Serial D/A converters as control unit, uses 2.5V to make
Datum for D/A output analog quantity.Single-chip microcomputer sends 8 bit strings by I/O pin to D/A converter
Row number signal, drives the constant-current source electricity of operational amplifier composition from the analog voltage that the output of DACA pin is corresponding
Road.The operation principle of the constant-current source circuit of operational amplifier composition is VR7With 2.5V reference voltage respectively by electricity
Resistance R4 (10K), resistance R2 (100K) is connected to the positive input terminal V of operational amplifier+, according to operation amplifier
The positive input terminal V of device+Electric current is almost nil, can obtain (VR7-V+)/10=(V+-2.5)/100；VDACA
It is connected to the negative input of operational amplifier by resistance R3 (100K), R6 (10K) respectively with cell voltage V
End V-, according to the negative input end V of operational amplifier-Electric current is almost nil, can obtain (VDACA-V-)/100=(V--V)
/10；Concept V according to operational amplifier virtual earth+=V-Bring in above-mentioned formula, (V can be obtainedR7-V)×
10=VDACA-2.5。
Ni-mh, NI-G discharge and recharge detector need to realize the constant-current charge (forward constant-current source) to battery and perseverance
Banish electricity (negative sense constant-current source) function.The constant-current source circuit utilizing prior art to realize just can bearing must be adopted
Overlapping independent circuit with two to complete, circuit and program are the most extremely complex, and small product size is big, and reliability is low.
For simplifying circuit and reducing the complexity of program, the numerical control constant current charge-discharge circuit of invention uses a four-way 8
Bits Serial D/A converter is as control unit, and a four-operational amplifier, the while of can realizing, four way controls are permanent
Stream charging/discharging function.Circuit uses element few, has that control accuracy is high, safe and reliable, scheduling and planning is simple
The advantage such as just.
4. section-type LCD driver module
Equipment work process shows mode of operation, operating current, voltage, internal resistance, appearance in real time by LCD
The information such as amount, working time, display content-control, in 128 sections, therefore selects HT1621 to drive as display
Moving cell.This integrated circuit has 1/3 bigoted ratio, 1/4 dutycycle, 32 × 4 sections of outputs, can meet display
Need.In this circuit, HT1621 uses internal oscillator source, OSCO and OSCI pin is unsettled.Single-chip microcomputer passes through
J1 writes serial data to HT1621, and SEG [0-31], COM [0-3] produce corresponding bias voltage and drive LCD
Display screen.HT1621 also has audio output function, and sending order by single-chip microcomputer can draw by 11,12
Foot produces the audio-signal-driven buzzer of 2KHz or 4KHz, as shown in Figure 5.
5. keyboard circuit
The all feature operations of native system have only to three buttons, can complete cell channel selection, mode of operation
The functions such as selection, operating current selection.This circuit uses stand-alone keypad detection, is connected directly to single-chip microcomputer 3
Individual I/O pin.When button is not pressed, single-chip microcomputer pin is high level；When button is pressed, draw accordingly
Foot becomes low level.Software system by I/O pin trailing edge and rising edge can determine whether button by
Descend and release.Keyboard circuit schematic diagram is 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, high resistant three kinds
State.Pull current and sink current all can reach 20mA, can be used for directly driving LED.This circuit uses two-way
Red green diode, one end connects single-chip microcomputer by current-limiting resistance connecting valve power supply+2.5V voltage, the other end
I/O mouth.The red light emitting diodes conducting when single-chip microcomputer output low level；The green emitting when exporting high level
Diode current flow；When exporting high-impedance state, light emitting diode extinguishes.Status indicator lamp module principle figure such as Fig. 7
Shown in.
7.USB communication module
USB communication module in native system is the pattern being turned USB by microcontroller serial port asynchronous communication.CH340G
It is that serial ports TTL turns USB level chip.Single-chip microcomputer TX, RX pin is directly connected to 3,2 pins of CH340G,
5,6 pin output D+, D-USB signals.USB communication module schematic diagram is as shown in Figure 8.
A kind of ni-mh, the charging/discharging thereof of nickel-cadmium cell analysis by charged and discharged device, as it is shown in figure 9, method step
It is as follows,
A. system start-up function initializes, and opens interrupters function inputs, each function mould of following recursive call
Block function；
B. start battery voltage acquisition program, the analog quantity of cell voltage is converted to the digital quantity of correspondence, and
Detecting whether to load battery, being shown at LCD display by channel reset if not loading battery；If
Loading battery, then carry out battery abnormal work detection, whether the detection voltage of battery, internal resistance, capacity exceed
System allowed band, working time whether overlength, operating temperature is the most higher；
C. when battery operated unusual condition occurs time, exception handler by force termination work at present, and with
Acoustooptic form is reported to the police, until battery abnormality is got rid of, and shows at LCD display；When battery not
When there is unusual condition, system will carry out corresponding charge and discharge control and parameter inspection according to the mode of operation arranged
Survey, and show at LCD display；
After d.LCD display screen shows, it is operated status indicator lamp and shows, be used for showing respective channel
The duty of battery；
E. it is then turned on keyboard detection and program is set, when pressing by detection keyboard button and discharge under the signal of telecommunication
Fall edge and rising edge also add Key dithering program and are used for calling and arrange program accordingly.
In described step a, after system start-up, opening timing is interrupted and serial ports receives interrupt mode, when system is sent out
During raw interruption, first judge interrupt type, interrupt if serial ports receives, carry out resolving data, resolve host computer
It is sent to mode of operation and the operating current setting command of native system, and performs relative set program, the most extensive
Multiple interrupt spot；If Interruption, first judge whether timing reaches 1 second, if not up to, returning, if reaching
To being then operated Time Calculation, then by electric current accumulation calculating discharge capacity of the cell, then pass through single-chip microcomputer
Asynchronous serial port sends data, is then back to, as shown in Figure 10.
Working method is as follows,
(1) charge mode:
Ni-mh in passage, nickel-cadmium cell are carried out constant-current charge operation, uses Single-chip Controlling three stage to fill
Power mode (i.e. precharge, quick charge, trickle charge).As shown in figure 11, precharge, quick charge,
Trickle charge function mainly sends digital signal by single-chip microcomputer to digital-control constant-flow source circuit and changes constant-current source difference
Current value realize；Charging process detects the work ginsengs such as cell voltage, charging current, charging interval in real time
Number, use industry conventional-Δ V judges whether battery is full of ,-Δ V judges that full function mainly passes through D/A
Transducer collection is electrically charged the voltage digital amount of battery and sends into single-chip microcomputer, detection program judge it is cell voltage
Whether appearance declines, and shows that battery has been filled with when occurring and declining, enters trickle charge pattern.Occur abnormal
Time equipment be automatically stopped work, and the flicker of passage corresponding status indicator lamp is reminded.
(2) detection pattern:
Ni-mh in passage, nickel-cadmium cell are carried out constant-current discharge operation.Real-time Collection battery in discharge process
The running parameters such as voltage, discharge current, discharge time, and show that the discharge capacity of battery and the internal resistance of cell are big
Little.Corresponding passage display lamp turns lamp (to reach final discharging voltage) after discharge off, and passage quits work.
If there is the situation that channels operation is abnormal, passage display lamp can flash prompting user, and equipment quits work.
(3) circulation pattern:
Ni-mh in passage, nickel-cadmium cell first carry out constant-current discharge operation, and mode of operation now is equal to
" detection pattern ", after battery reaches final voltage, enters constant-current charge state, mode of operation etc. now
It is same as " charge mode ".
(4) charging and discharging currents is dynamically selected:
This equipment uses digital-control constant-flow source technology, can dynamically change discharge and recharge by the digital signal that MCU exports
Size of current.The resolution of constant-current source electric current is determined by D/A switching network completely.
By keyboard circuit arrange battery mode of operation (charge mode, detection pattern, activate pattern) and
Operating current size (charge and discharge size of current).Battery is entered by single-chip microcomputer by numerical control constant current charge-discharge circuit
Row charges, detects or activate.The parameter of work process is shown, by USB communication in real time by lcd screen
Module is sent to host computer.
Under charge mode, single-chip microcomputer Real-time Collection voltage data, carry out pre-when cell voltage is less than 1.2V
Charging；The current value that equipment sets according to user when cell voltage is higher than 1.2V carries out constant-current charge；Work as electricity
Trickle charge is carried out during cell voltage appearance-Δ V.Equipment by battery voltage information, mode of operation, operating current,
Working time shows on the lcd screen in real time.
In a detection mode, single-chip microcomputer Real-time Collection voltage data, when cell voltage is higher than final voltage (0.9V)
Time set electric current according to user and carry out constant-current discharge, in discharge process, system is according to discharge time, electric discharge electricity
Stream calculation discharge electricity amount and the internal resistance of cell；When cell voltage is less than final voltage (0.9V), system stops work
Making, user can be from screen when read work pattern, operating current, battery capacity, the internal resistance of cell, work
Between etc. information.
In the active mode, battery is first worked by single-chip microcomputer according to detection pattern, treats that battery reaches final voltage
After be operated according to charge mode.Corresponding data during work shows on the lcd screen.
System sends data to host computer procedure in the course of the work by the way of asynchronous serial port turns USB, on
Position machine shows cell operating status in real time, display content include mode of operation, operating current, voltage, internal resistance,
Capacity, time, and represent in graphical form, data can preserve to computer.
It is simple that this product comprises universal ni-mh, all functions of NI-G quick charger, and circuit, cost
Cheap, it is family's ni-mh, the substitute products of NI-G charger.Have the following characteristics that
(1) digital-control constant-flow source circuit
This circuit use a D/A switching network, an operational amplifier, a N-channel field effect transistor and
One P-channel field-effect transistor (PEFT) pipe, is achieved that the constant-current source circuit that can just can bearing in the case of single supply, electricity
Road is extremely simple, greatly reduces production cost, with small product size.
(2) feature richness, simple to operate
This equipment uses 8 single-chip microcomputers to be managed external circuit, and program is fully according to battery industry
Standard is designed.Function is the abundantest, and user operation is very simple, and only three buttons just can complete to be owned
Operation.Focusing on strengthening software capability in R&D process, reduce hardware and put into, production cost is the cheapest.
After later product upgrading, user has only to update software and just can realize corresponding function.
(3) can be with computer on-line real-time
For advanced level user, this product provides ipc monitor and arranges program.User can pass through serial ports
Or USB is connected to computer, is changed channel status by host computer in real time and (include that mode of operation is arranged and charge and discharge
Electricity electric current selects).The work state information of each passage can be checked simultaneously by the display window of host computer, adopt
Sample data can synchronize to be stored in the machine, it is simple to is used with post analysis.
(4) by computer calibrator (-ter) unit
This product needs the parameter up to 50 of calibration in process of production, and traditional mode of production industry is by additional
Variable-resistance mode is manually calibrated, and well imagines that the volume of product will increase, and reliability will reduce,
The most therefore cost of labor is greatly increased.This product has merged computer automatic calibration function, and production firm has only to
Product being connected to computer, is arranged by simple several steps and just can complete calibration, accuracy rate is greatly improved,
Decrease human cost and danger simultaneously.
(5) autonomous channel is run, and expansion capacity is extremely strong
This product can realize four passages or multichannel works simultaneously, does not interfere with each other between passage.Phase
Answer function can easily pass very much software to upgrade.The most permissible by proper transformation hardware and software parameter
Realize the exploitation of the analysis by charged and discharged equipment for 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 are carried out exhaustive presentation,
Principle and the embodiment of the present invention are set forth by specific case used herein, above example
Method and the core concept thereof being only intended to help to understand the present invention is described；General simultaneously for this area
Technical staff, according to the thought of the present invention, the most all will change,
To the change of the present invention with to improve to be possible, without beyond accessory claim defined design and
Scope, in sum, this specification content should not be construed as limitation of the present invention.
Claims (7)
1. ni-mh, a nickel-cadmium cell analysis by charged and discharged device, including single-chip microcomputer, LCD display, switch electricity
Source supply module, it is characterised in that: also include numerical control constant current charge-discharge road module, USB communication module, electricity
Cell voltage Acquisition Circuit, described single-chip microcomputer signal output part is by numerical control constant current charge-discharge road module with battery even
Logical, described Chip Microcomputer A N pin is connected with anode by battery voltage acquisition circuit；Described numerical control is permanent
Stream charge-discharge circuit module is made up of reference voltage source, D/A converter, control circuit and charge-discharge circuit, institute
State the reference voltage source signal of telecommunication to be electrically connected with charge-discharge circuit by D/A converter, control circuit；Described fill
Discharge circuit includes sampling resistor R7, N-channel field effect transistor, P-channel field-effect transistor (PEFT) pipe, and electricity to be charged
Pond, described sampling resistor R7, N-channel field effect transistor, P-channel field-effect transistor (PEFT) pipe, battery to be charged are gone here and there successively
Connection；Described control circuit include sampling resistor R2, sampling resistor R3, sampling resistor R4, sampling resistor R6,
Safe Resistance R5, operational amplifier, described sampling resistor R2 one end electrically connects with reference voltage source, and it is another
One end electrically connects with the positive input terminal of operational amplifier, and described sampling resistor R3 one end is with D/A converter even
Connecing, its other end electrically connects with operational amplifier negative input end, described sampling resistor R4 one end and sampling electricity
Resistance R7 input connects, and its other end electrically connects with operational amplifier positive input terminal, described sampling resistor R6
One end is connected with sampling resistor R7 outfan, and its other end electrically connects with operational amplifier negative input end, institute
State the outfan of operational amplifier by safe Resistance R5 and the N-channel field effect transistor of charge-discharge circuit, P
Channel field-effect pipe connects.
A kind of ni-mh, nickel-cadmium cell analysis by charged and discharged device the most according to claim 1, it is characterised in that:
Described D/A converter is serial four road transducer, its four paths is connected to group of control circuit respectively and fills
Discharge circuit.
A kind of ni-mh, nickel-cadmium cell analysis by charged and discharged device the most according to claim 1, it is characterised in that:
Also including that section-type LCD drives module, described single-chip microcomputer drives module with LCD display even by section-type LCD
Logical.
A kind of ni-mh, nickel-cadmium cell analysis by charged and discharged device the most according to claim 1, it is characterised in that:
Also including host computer, the communication signal outfan of described single-chip microcomputer passes through USB interface communication module and host computer
Connection.
A kind of ni-mh, nickel-cadmium cell analysis by charged and discharged device the most according to claim 1, it is characterised in that:
Keyboard circuit module, duty indicating module, temperature sensor module, different it is additionally provided with on described single-chip microcomputer
Often status alert module, described keyboard circuit module, duty indicating module, temperature sensor module,
Exceptional state alarm module connects with single-chip microcomputer respectively.
6. a ni-mh, the charging/discharging thereof of nickel-cadmium cell analysis by charged and discharged device, it is characterised in that: method walks
It is rapid as follows,
A. system start-up function initializes, and opens interrupters function inputs, each function mould of following recursive call
Block function；
B. start battery voltage acquisition program, the analog quantity of cell voltage is converted to the digital quantity of correspondence, and
Detecting whether to load battery, if not loading battery or battery is removed, system channel resets, and calls work
State indicator module extinguishes LED light；If having been charged into battery, then carry out battery abnormal work detection, inspection
Survey the voltage of battery, internal resistance, capacity whether beyond system allowed band, working time whether overlength, work
Temperature is the most higher；
C. when battery operated unusual condition occurs time, exception handler by force termination work at present, and with
Acoustooptic form is reported to the police, until battery abnormality is got rid of, and shows at LCD display；When battery not
When there is unusual condition, system will carry out corresponding charge and discharge control and parameter inspection according to the mode of operation arranged
Survey, and show at LCD display；
After d.LCD display screen shows, it is operated status indicator lamp and shows, be used for showing respective channel
The duty of battery；
E. it is then turned on keyboard detection and program is set, when pressing by detection keyboard button and discharge under the signal of telecommunication
Fall edge and rising edge, and add Key dithering program and be used for calling corresponding function setting program.
A kind of ni-mh, the charging/discharging thereof of nickel-cadmium cell analysis by charged and discharged device,
It is characterized in that: in described step a, after system start-up, opening timing is interrupted and serial ports receives interrupt mode,
When system occurs to interrupt, first judge interrupt type, interrupt if serial ports receives, carry out resolving data, solve
Analysis host computer is sent to mode of operation and the operating current setting command of native system, and performs relative set journey
Sequence, then recovers interrupt spot；If Interruption, first judge whether timing reaches 1 second, if not up to,
Returning, if reaching, being operated Time Calculation, then by electric current accumulation calculating discharge capacity of the cell, then
Send data by single-chip microcomputer asynchronous serial port, be then back to.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 CN104092251A (en) | 2014-10-08 |
| CN104092251B true 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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| 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 |
| 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 |
| CN106972557B (en) * | 2017-03-18 | 2024-03-15 | 海汽电子技术芜湖股份有限公司 | NI-MH battery intelligent charging circuit for automobile module and charging realization 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 |
| 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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| CN2593442Y (en) * | 2002-12-12 | 2003-12-17 | 广州擎天实业有限公司电工分公司 | Battery constant current charging-discharging apparatus |
| CN101110521A (en) * | 2007-08-20 | 2008-01-23 | 中兴通讯股份有限公司 | Charging device and method for nickel-hydrogen battery |
| CN101587172B (en) * | 2009-06-19 | 2011-05-04 | 中南大学 | Secondary battery testing system |
| CN103746433B (en) * | 2014-01-24 | 2016-01-20 | 广西电网公司电力科学研究院 | The device of multi-functional charge-discharge circuit and composition thereof |
| 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 |
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| CN104092251A (en) | 2014-10-08 |
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