CN102478633A

CN102478633A - Storage battery integrated tester

Info

Publication number: CN102478633A
Application number: CN201010564116XA
Authority: CN
Inventors: 苏振宽; 冉军; 侯长江; 郭占涛
Original assignee: SHAANXI CRIANE ELECTRONIC CO Ltd
Current assignee: SHAANXI CRIANE ELECTRONIC CO Ltd
Priority date: 2010-11-29
Filing date: 2010-11-29
Publication date: 2012-05-30

Abstract

The invention relates to a storage battery integrated tester. The tester is high in test precision, high in discharge power, small in volume and light in weight; and the workload of daily test and maintenance of a storage battery is greatly reduced. The tester comprises a single chip machine, wherein the single chip machine is respectively connected with an externally connected current sensor, an internally arranged current sensor, an externally hung load current sensor I, an externally hung load current sensor II and an integrated voltage sensor through an analog-to-digital conversion (ADC) circuit, is connected with a discharging plate through a digital-to-analog conversion (DAC) and pulse-width modulation (PWM) circuit and a discharging plate control circuit, and is also respectively connected with a fan control detection module, a temperature and humidity measuring module, a communication module, a display module, a storage module, a clock circuit and a watchdog circuit.

Description

The accumulator comprehensive tester

One, technical field:

The present invention relates to a kind of accumulator pick-up unit, especially relate to a kind of accumulator comprehensive tester.

Two, background technology:

In the background technology, existing storage battery professional test instrument test is complicated, and precision is low, and discharge power is big, and volume is big simultaneously, and weight is big, and the line service amount is big.

Three, summary of the invention:

The present invention provides a kind of accumulator comprehensive tester in order to solve the weak point in the above-mentioned background technology, and its measuring accuracy is high, and discharge power is big, and volume is little, and is in light weight, significantly reduced the workload of the daily test maintaining of accumulator.

For realizing above-mentioned purpose, the technical scheme that the present invention adopts is:

A kind of accumulator comprehensive tester; It is characterized in that: comprise single-chip microcomputer; Single-chip microcomputer is connected with external impressed current sensor, built-in current sensor, plug-in load current sensor one, plug-in load current sensor two and whole group voltage sensor respectively through adc circuit; Single-chip microcomputer also is connected with discharge electrode with pwm circuit and discharge electrode control circuit through DAC, also is connected with fan control detection module, temperature and humidity measurement module, communication module, display module, memory module, clock circuit and watchdog circuit on the single-chip microcomputer respectively.

Above-mentioned single-chip microcomputer is a W77E516B-DIP40 type single-chip microcomputer.

Compared with prior art, the advantage and the effect that have of the present invention is following:

1, have the on-line monitoring function:

Be in online discharge in electric battery, all fill, under the state such as floating charge, electric battery and single battery are carried out real-time monitoring; Comprise that whole group voltage, single battery voltage, whole group charging and discharging currents, whole group charge into capacity, whole group is emitted capacity, monitoring time etc.; The user can be provided with monitoring battery joint number.

2, check discharging function:

Behind the electric battery detachment system, utilize intelligent fictitious load to carry out constant current and check discharge; Configure parameters such as " discharge current ", " discharge time ", " discharge capacity ", " whole group termination protection voltage ", " monomer stops protection voltage "; Tester just automatically performs discharging function, and shows that in real time discharge current, battery put data such as capacity, whole group voltage, single battery voltage, discharge time; When electric battery reaches termination sparking voltage setting value, termination discharge capacity setting value, termination setting value discharge time, arbitrary monomer battery voltage is lower than termination monomer voltage setting value or the people all can stop discharge test for carrying out terminating operation.

3, the user can be provided with the discharge battery joint number.

Can preserve 10 groups of on-line monitorings, 10 groups and check the discharge test data; The user can inquire about, deletes and transmit operation to data.

Four, description of drawings:

Fig. 1 is a schematic block circuit diagram of the present invention;

Fig. 2 is circuit theory diagrams of the present invention;

Fig. 3 is main program structure figure of the present invention;

Fig. 4 is a main program flow chart of the present invention;

Fig. 5 is a timing interrupt service routine process flow diagram of the present invention.

Five, embodiment:

Referring to Fig. 1 and Fig. 2; Comprise single-chip microcomputer; Single-chip microcomputer is connected with external impressed current sensor, built-in current sensor, plug-in load current sensor one, plug-in load current sensor two and whole group voltage sensor respectively through adc circuit; Single-chip microcomputer also is connected with discharge electrode with pwm circuit and discharge electrode control circuit through DAC, also is connected with fan control detection module, temperature and humidity measurement module, communication module, display module, memory module, clock circuit and watchdog circuit on the single-chip microcomputer respectively.In the adc circuit, ADC adopts serial TCL2543 circuit, and benchmark is with REF198 (4.096V); Passage 0 on-line monitoring charges into electric current, and passage 1 on-line monitoring is emitted electric current, passage 2 discharge currents; Passage 3 plug-in load 1 discharge currents; Passage 4 plug-in load 2 discharge currents, passage 5 whole group voltages, the voltage signal of sensor output is followed input ADC through 324 amplifiers.In the discharge electrode control circuit, metal-oxide-semiconductor 0 ~ 9 is a straight pipe, and through CPLD control, low level is effective by CPU, and metal-oxide-semiconductor 10 is that PWM exports, and through the output of SG3525 circuit, low level is effective by DAC (AD7541) in PWM output, and the input of DAC is imported through CPLD by CPU.In fan control, the testing circuit, the fan control low level is effective, and fan detects just often to work and is low level, stops to be high level.In the communicating circuit, adopt the RS485 bus, use the UART0 of CPU, realize that through MAX485 baud rate=19200 are produced by the T1 timer with the collector communication.In the PC/USB communication, adopt the RS232 bus with the PC communication, use the UART1 of CPU, realize through MAX232.Adopt 2 direct communications of CPU (Transistor-Transistor Logic level) with the USB communication, use the UART1 of CPU, PC and USB time-sharing multiplex UART1 switch through 74HC126 control, and baud rate=19200 are produced by the T1 timer.Keyboard adopts 4X4 keyboard, INADD=0x0002, OPADD=0x0002.Show and adopt 320X240 LCD module, driving circuit SED1335.Memory RAM adopts 6264 (8K).FLASH adopts AT45DB161B (16Mbit), SPI interface.Clock circuit adopts DS1302 circuit, SPI interface.Temperature survey adopts DS18B20 to carry out temperature survey, with CPU P3.5 simulation 1-Wire bus.In the moisture measurement, humidity sensor adopts the HS1101 humicap, produces the frequency corresponding with relative humidity through 555 oscillatory circuits, and with the T0 counting mode survey frequency of CPU, tabling look-up obtains rh value.House dog is adopted MAX813, about 1.6 seconds of house dog time, feeds 1 time with P1.0 100ms.CPU adopts W77E516B-DIP40.In the sampling section signal condition, sample through ADC after the direct dividing potential drop of the voltage of 12V battery; Each module can sample 1 the joint monomer be the battery of 12V.Discharge electrode adopts 5 metal-oxide-semiconductors, a conduct adjustment pipe, and 4 as the all-pass pipe.

Referring to Fig. 3 and Fig. 4, program is divided into a plurality of tasks, by the timeslice management.The master routine program circuit is:

1, beginning;

2, self check, initialization;

3, do you declare the key task are arranged? Have, get into next step; Then do not get into for the 5th step;

4, the key task is handled;

5, do you declare the reception acquisition tasks are arranged? Have, get into next step; Then do not get into for the 7th step;

6, receiving acquisition tasks handles;

7, sending acquisition tasks handles;

8, do you declare the PC task that receives are arranged? Have, get into next step; Then do not get into for the 10th step;

9, receiving the PC task handles;

10, do you declare measuring task are arranged? Have, get into next step; Then do not get into for the 12nd step;

11, measuring task is handled;

12, do you declare the discharge control task are arranged? Have, get into next step; Then do not get into for the 14th step;

13, the discharge control task is handled;

14, do you declare the 1s task are arranged? Have, get into next step; Then do not get into for the 16th step;

15, the 1s task is handled;

Need 16, declaring hello dog? Have, get into next step; Then do not return for the 3rd step;

17, feeding dog handles..

Referring to Fig. 5, regularly interrupt service routine adopts T2 regularly to interrupt, the time base=20ms.The timeslice of accomplishing each task is controlled, receive time-out regularly reaches and the function of time correlation.Program circuit is:

1, beginning;

2, keep the scene intact;

3, key scanning;

4, send at interval regularly to acquisition module;

5, discharge control regularly;

6, do you declare 100ms? Be to get into next step; Not then to get into for the 13rd step;

7, measuring task regularly;

8, receive acquisition module regularly;

9, receive PC regularly;

10, receive PC regularly;

11, do you judge 1s? Be to get into next step; Not then to get into for the 13rd step;

12, activate the 1s task;

13, recover on-the-spot, finish.

Claims

1. accumulator comprehensive tester; It is characterized in that: comprise single-chip microcomputer; Single-chip microcomputer is connected with external impressed current sensor, built-in current sensor, plug-in load current sensor one, plug-in load current sensor two and whole group voltage sensor respectively through adc circuit; Single-chip microcomputer also is connected with discharge electrode with pwm circuit and discharge electrode control circuit through DAC, also is connected with fan control detection module, temperature and humidity measurement module, communication module, display module, memory module, clock circuit and watchdog circuit on the single-chip microcomputer respectively.

2. accumulator comprehensive tester according to claim 1 is characterized in that: single-chip microcomputer is a W77E516B-DIP40 type single-chip microcomputer.