CN204789948U - Chargeable call energy repayment formula detection device that can establish ties, connect in parallel - Google Patents
Chargeable call energy repayment formula detection device that can establish ties, connect in parallel Download PDFInfo
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- CN204789948U CN204789948U CN201520471579.XU CN201520471579U CN204789948U CN 204789948 U CN204789948 U CN 204789948U CN 201520471579 U CN201520471579 U CN 201520471579U CN 204789948 U CN204789948 U CN 204789948U
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Abstract
The utility model provides a detection circuitry that chargeable call energy repayment formula detection device that can establish ties, connect in parallel, aim at provide one kind be used for establishing ties, parallelly connected energy repayment formula chargeable call voltage, the electric current. The utility model provides an including monitoring host, singlechip, PWM rectification inverter circuit, cluster parallel control module, monitoring host passes through RS485 communication module and is connected with the singlechip, and cluster parallel control module is connected with the singlechip through DA conversion module, cluster parallel control ware respectively, and current/voltage signal that the parallel control module of going here and there was gathered conveys to the singlechip via AD conversion module, and the parallel control module of going here and there still links together through, PWM rectification inverter circuit and electric wire netting. The device's effect makes the chargeable call detection circuitry system oversimplify, improves that system stability is poor, the elimination is to the impulse current of chargeable call charge -discharge to control the system by host computer and singlechip.
Description
Technical field
The present invention relates to a kind of series and parallel for rechargeable battery testing circuit, and the pick-up unit of energy feedback can be realized.
Background technology
At present, day by day in short supply along with world's regenerative resource, rechargeable battery receives increasing concern as the one of clean energy resource, and it has great potential at consumption, automobile and industrial circle, and the demand of these fields to rechargeable battery constantly increases.The countries and regions governments such as Europe, North America and China carry out strict supervision regulations also in this market development of promotion for carbon emission.The development of rechargeable battery industry has driven the development of rechargeable battery checkout equipment further, impels the perfect of detection method, standard and the equipment development matched.
Traditional rechargeable battery detection circuitry is complicated, bulky, virtually adds cost, and poor stability, dash current is large, can cause inestimable damage to battery.And equipment is with strong points, also huge energy wasting phenomenon is had in discharge process, example: 5V3A equipment can only prop up rechargeable battery and detect for the list below this voltage, current range, as the equipment needing 20V10A charging current then again must purchase greater amount journey, in application process, easily cause the idle of equipment and waste.Legacy equipment is in discharge process, owing to have employed resistance energy consumption mode, the huge waste of energy will be caused, as calculated with the rechargeable battery pack productive capacity of producer one day 5000 20V20A, 1 hour has been used in discharge examination process, namely electricity during 2000W/ loses in the process in vain, and this measure is not only and is also caused huge loss to manufacturer to the waste of the energy.
Summary of the invention
The object of the present invention is to provide a kind of for can the energy feedback type rechargeable battery voltage of series, parallel, the testing circuit of electric current.
For achieving the above object, the technical solution used in the present invention is:
A kind of can the rechargeable battery energy feedback type pick-up unit of series, parallel, comprise monitoring host computer, single-chip microcomputer, PWM rectification/inverter circuit, connection in series-parallel control module, monitoring host computer is connected with single-chip microcomputer by RS485 communication module, connection in series-parallel control module is connected with single-chip microcomputer respectively by D/A modular converter, series-parallel controller, the current and voltage signals that connection in series-parallel control module collects is sent to single-chip microcomputer via A/D modular converter, and connection in series-parallel control module is also linked together by, PWM rectification/inverter circuit and electrical network.
Described connection in series-parallel control module comprises: connection in series-parallel receiver, SCR control module, relay-operated controller, relay, controllable silicon, connection in series-parallel receiver is connected with multiple SCR control module, multiple relay-operated controller respectively, and each SCR control module is connected with two or more controllable silicons; Controllable silicon is connected with between the positive pole of adjacent cell and negative pole;
Each relay-operated controller is connected with two or more relays, is connected to two normally opened contacts of relay between the positive pole of adjacent cell, between negative pole.
Described SCR control module is connected with seven controllable silicons, and each relay-operated controller is connected with seven relays; Described connection in series-parallel receiver adopts 8 8-digit microcontrollers of model AT89S52, and SCR control module adopts 8 TC787 SCR control chip portfolios to form, and relay-operated controller employing model is the Darlington transistor driver of ULN2803.
Described A/D modular converter adopts the A/D conversion chip of model ADS1110; The digital analog converter that D/A modular converter adopts 12 bit-types number to be DAC7611,
Described monitoring host computer is industrial electronic computing machine.
The effect of this device is that rechargeable battery detection circuitry is simplified, improve system stability poor, eliminate dash current to rechargeable battery discharge and recharge, and by host computer and single-chip microcomputer, system to be manipulated.Battery discharging energy can be fed back to electrical network by this device in discharge examination process, instead of simply wastes, and this measure is not only and is also reduced the wastage to manufacturer to environmental protection.
Accompanying drawing explanation
Fig. 1 is the electrical schematic diagram of single-phase PWM rectification/inverter circuit.
Fig. 2 is electrical principle block scheme.
Fig. 3 is that connection in series-parallel controls electrical schematic diagram.
Embodiment
Embodiment
Below with reference to the accompanying drawings the present invention is further elaborated.
The rechargeable battery energy feedback module of the present invention's design adopts single-phase PWM rectification/inverter circuit, and its schematic diagram as shown in Figure 1.Its principle of work is: controlled by switch tube VDl, VD2, VD3, VD4, just can produce a sinusoidal modulation wave Uab at the ac input end of rectifier bridge.Not containing low-order harmonic composition in Uab, only containing with sinusoidal signal ripple same frequency and the fundametal compoment of amplitude in proportion and the very high harmonic wave of the frequency relevant with triangular carrier.Due to the filter action of inductance L s, these higher harmonic voltages only can make alternating current Is produce very little pulsation.In AC supply voltage one timing, the amplitude of Is and phase place are by the amplitude of fundametal compoment in Uab and determine with the phase differential of Us.Change amplitude and the phase place of fundametal compoment in Uab, just can make Is and Us same-phase or antiphase.
Obtaining the general way at electric network voltage phase angle is first produce a signal synchronous with line voltage, then obtains phasing degree by synchronizing signal.General employing phaselocked loop obtains.Phaselocked loop is generally clamored by phase demodulation, loop filter, voltage controlled oscillator and frequency divider form.Its basic functional principle is that the phase signal of line voltage and control system inner synchronousing signal is transformed into voltage by phase detector, go to control voltage controlled oscillator after loop filter filtering, thus change frequency and the phase place of internal system synchronizing signal, make it consistent with line voltage.
As shown in Figure 3, dotted line frame inside is connection in series-parallel control module to the electrical schematic diagram of connection in series-parallel control module.As shown in Figure 2, exchange input and be delivered to connection in series-parallel control module by PWM rectification/inverter circuit, connection in series-parallel control module is connected with batteries such as mesuring battary A, B, A/D modular converter is delivered to by by after connection in series-parallel control module internal current, voltage acquisition, analog quantity is converted to digital quantity, and is got by monolithic is machine-readable.
This pick-up unit loads several mesuring battaries A, B ... after, carry out setting charge and discharge current/voltage numerical value by monitoring host computer, send data to single-chip microcomputer through RS485 communication module.After single-chip microcomputer process, single-chip microcomputer, via D/A modular converter, converts digital quantity to analog quantity and delivers to connection in series-parallel control module, to reach accurate constant current, constant voltage object.
Maximum feature of the present invention is can the rechargeable battery of compatible different size.Its connection in series-parallel control module can be low-voltage and high-current, or the detection of high voltage small area analysis provides selection.Such as: if when needing big current, by battery A and battery B two positive pole, two negative pole two ends directly rear access batteries in parallel; During as needed high voltage, then the negative pole of battery A is directly connected with battery B positive pole, and rectifies pole and B at A and hold in negative pole and access battery to be checked, high voltage small area analysis can be provided to detect.
The monitoring host computer of this pick-up unit is industrial electronic computing machine, is connected with communication apparatus with RS232 serial ports is convenient.In RS485 communication module, MAX232 is standard serial port design single supply level transferring chip.Its 1-6 pin and 4 electric capacity form charge pump circuit, produce+12V and-12V two kinds of power supplys, are supplied to RS232 serial ports level.7-14 pin forms two data channel, and wherein 13 pin (R1IN), 12 pin (R1OUT), 11 pin (T1IN), 14 pin (T1OUT) are the first data channel.8 pin (R2IN), 9 pin (R2OUT), 10 pin (T2IN), 7 pin (T2OUT) are the second data channel.TTL/CMOS data convert RS-232 data to and deliver to computer DB9 plug from 11 pins (T1IN), 10 pins (T2IN) input from 14 pin (T1OUT), 7 pin (T2OUT); The RS-232 data of DB9 plug export from 12 pins (R1OUT), 9 pins (R2OUT) after 13 pins (R1IN), 8 pins (R2IN) input convert TTL/CMOS data to.MAX1482 is low-power consumption transceiver, for RS-485 communication. be the driver of function Slew Rate restriction, reduce EMI to greatest extent, and reduction is reflected by inappropriate cable termination, message transmission rate ensures up to 250kbps.Single-chip microcomputer adopts STM32F103, it is with 2 12 analog to digital converters, the two sampling of 1 μ s switching time (nearly 16 input channels) conversion range: 0 to 3.6V, receive the digital quantity of the voltage that described A/D change-over circuit exports, and the charge and discharge current value itself and processor prestored compares, and makes its output valve constant.
Connection in series-parallel control module electrical principle as shown in Figure 3.When needs high voltage, during as 10V, then send series of command by main control computer (i.e. single-chip microcomputer), after the connection in series-parallel receiver (model AT89S52) of connection in series-parallel control module receives order, control G1 signal end in SCR control module and become high level, held hold with battery A2 by battery B1 by controllable silicon T1 and be connected, now entering electric battery at battery A1 end and battery B2 termination can obtain required voltage; Time in like manner as needed 15V, then logically control G1, G2 control terminal in controllable silicon module and make adjacent three pieces of battery electrodes series connection, held by battery B1 hold with battery A2 and be connected, battery B2 end is held with battery A3 and is connected.
During as needed big current, as 20A then sends order in parallel by main control computer, after the connection in series-parallel receiver of connection in series-parallel control module receives orders, pilot relay controller J1 signal end makes relay conducting, and such battery A1 end is held with A2, A2 holds to hold with B2 and is connected.Now, mesuring battary positive pole is connected on battery A1 or A2 and holds, negative pole and battery B1 or B2 hold and can obtain required electric current.(do not adopt controllable silicon and adopt relay when this is in parallel, because controllable silicon has certain step-down at about 1V when conducting, this voltage then can cause supply voltage to there is certain deviation, when different voltage is applied to same battery-end, battery terminal voltage cannot be ensured, and when adopting relay scheme, the voltage deviation produced after adhesive due to relay is almost 0, so there is not voltage difference problem, being able to guarantee, to put on battery both end voltage equal.）
SCR control module adopts 8 TC787 SCR control chips, and TC787 adopts exclusive advanced IC technology, and the monolithic integrated optical circuit designed with reference to the integrated phase-shift trigger ic of foreign latest.It can single supply work, also can dual power supply work, is mainly applicable to three-phase thyristor phase-shifting trigger and three phase power transistor pulse-width modulation circuit.
Pin function is as follows:
(1) synchronizing voltage input end: pin 1 (Vc), pin 2 (Vb) and pin 18 (Va) are three-phase synchronous input voltage link.In application, connect the synchronizing voltage after input filter respectively, the peak value of synchronizing voltage should be no more than the working power voltage VDD of TC787.
(2) pulse output end: under half control monopulse mode of operation, pin 8 (C), pin 10 (B), pin 12 (A) are respectively the homophase trigger pulse output terminal corresponding with the positive half cycle of three-phase synchronous voltage, and pin 7 (-B), pin 9 (-A), pin 11 (-C) are respectively the anti-phase trigger pulse output terminal corresponding with three-phase synchronous voltage negative half cycle.When TC787 is set to entirely control two burst pulse working method, pin 8 is two pulse output ends that half cycle positive with C phase in three-phase synchronous voltage and B phase negative half period are corresponding; Pin 12 is two pulse output ends that half cycle positive with A phase in three-phase synchronous voltage and C phase negative half period are corresponding; Pin 11 is two pulse output ends corresponding with C phase negative half period in three-phase synchronous voltage and the positive half cycle of B phase; Pin 9 is two pulse output ends corresponding with A synchronised voltage negative half cycle in three-phase synchronous voltage and the positive half cycle of C phase voltage; Pin 7 is two pulse output ends corresponding with B phase voltage negative half period in three-phase synchronous voltage and the positive half cycle of A phase voltage; Pin 10 is two pulse output ends that half cycle positive with B phase in three-phase synchronous voltage and A phase negative half period are corresponding.In application, all connect the input of Pulse Power Magnification link or the control pole of pulse transformer institute driving switch pipe.
(3) control end: 1. pin 4 (Vr): phase shift controlling voltage input end.The height of this end input voltage, directly decides the phase shift range that TC787 exports pulse, and connect given link in application and export, its voltage magnitude is the working power voltage VDD of TC787 to the maximum.2. pin 5 (Pi): export pulse inhibit end.This end blocks the output of TC787 under being used for carrying out malfunction, high level is effective, in application, connects the output of protection circuit.3. pin 6 (Pc): TC787 working method arranges end.When this termination high level, TC787 exports dipulse row; And when this termination low level, export monopulse row.4. pin 13 (Cx): the capacity of the electric capacity Cx that this end connects decides TC787 or exports the width of pulse, and the capacity of electric capacity is larger, then pulse width is wider.5. pin 14 (Cb), pin 15 (Cc), pin 16 (Ca): the sawtooth wave electric capacity link of corresponding three-phase synchronous voltage.The capacitance size that this end connects determines slope and the amplitude of phase shift sawtooth wave, respectively by the capacity earth of an identical capacity in application.
(4) power end: TC787/ can single supply work, also can dual power supply work.Pin 3 (VSS) ground connection during single supply work, and pin 17 (VDD) allows the voltage applied to be 8 ~ 18V.During dual power supply work, pin 3 (VSS) connects negative supply, and it allows the voltage magnitude applied to be-4 ~-9V, and pin 17 (VDD) connects positive supply, allows the voltage applied to be+4 ~+9V.
Relay-operated controller adopts ULN2803, it is high-voltage large current No. eight Darlington transistor chip, this chip Zhong eight road NPN Darlington transistor is low logic level digital circuit and big current high voltage requirements device, as the ideal component of relay, printer and other similar load interface, this chip input and output voltage can reach 50V, collector current 500mA.
Detailed operation flow process is as follows:
1. monitoring host computer arranges the charge and discharge electric current to battery, voltage value.
2. data are sent to the 10th pin (RXD), 11 pin (TXD) of single-chip microcomputer via RS485 communication module.Laggard row relax is received by single-chip microcomputer.
3. single-chip microcomputer is by set charge and discharge electric current, and magnitude of voltage delivers to D/A modular converter, implements control and carries out charge and discharge.Wherein, the chip that D/A modular converter uses is 12 bit digital analog converter DAC7611 with three-wire system serial line interface, the highest 20MHz clock circuit, its the 2nd pin (CS) is chip select signal, Low level effective, 3rd pin (CLK) is the input of synchronous serial clock, 4th pin (SDI) is serial date transfer, is moved into the serial shift register of DAC7611 inside at the rising edge data of serial clock.5th pin (LD) is for loading control signal.Control the DAC register of data loading to DAC7611 inside of immigration, trigger number mode convertion.Low level effective.8th pin (Vout) is voltage output.Voltage range is 0 to 4.095V.
4. the analog quantity crossed through D/A modular converter is admitted to connection in series-parallel control module.
5. in connection in series-parallel control module, voltage acquisition chip adopts low noise, high precision operating amplifier OP07.OP07 is the bipolar operational amplifier of a kind of low noise, non-chopper-zero-stabilized.Owing to having low-down input offset voltage, do not need extra zeroing measure in a lot of application scenario.Have the feature that input bias current is low and open-loop gain is high, the characteristic of this low imbalance, high open-loop gain makes to be specially adapted to the aspect such as the measuring equipment of high-gain and the feeble signal of amplification sensor simultaneously.Wide input voltage range (minimum ± 13V) with up to 110dB(OP07A) common-mode rejection ratio and the combination of high input impedance, very high precision is provided in same circuitry phase resistance state, even if under very high closed loop gain, fabulous linear and gain accuracy also can be kept.Current sensor is high precision manganin manganin alloy paper tinsel sampling resistor, and analog quantity voltage exports.
6. the numerical value collected is sent to single-chip microcomputer by A/D modular converter and control effectively to connection in series-parallel control module circuit.Multidiameter option switch is CD4051.CD4051 is equivalent to hilted broadsword eight throw switch, which passage of switch connection, is decided by the 3 bit address code ABC inputted." INH " forbids end, and when " INH "=1, each passage is all disconnected.In addition, CD4051 is also provided with another one power end VEE, and to use as during level shift, thus the digital signal that the cmos circuit usually worked under single group Power supply condition is provided can directly control this multi-way switch.
The chip that the analog quantity of the electric current collected, voltage value is converted to digital quantity by 7.A/D modular converter is ADS1110.This chip is with I2C bus, continuous self-alignment serial a/d converter with Differential Input and the resolution up to 16, can do and detect more accurately electric current, voltage.
8. after single-chip microcomputer reads the electric current of A/D modular converter, voltage data, then be transported to monitoring host computer via RS485 communication module.
9. monitoring host computer arranges all data, calculates, and shows result.
10. monitoring host computer carries out real-time judge flow process by all data and whether meets termination condition, as reached, sending the finish command immediately, making this end-of-job.
Claims (5)
1. one kind can the rechargeable battery energy feedback type pick-up unit of series, parallel, it is characterized in that: comprise monitoring host computer, single-chip microcomputer, PWM rectification/inverter circuit, connection in series-parallel control module, monitoring host computer is connected with single-chip microcomputer by RS485 communication module, connection in series-parallel control module is connected with single-chip microcomputer respectively by D/A modular converter, series-parallel controller, the current and voltage signals that connection in series-parallel control module collects is sent to single-chip microcomputer via A/D modular converter, and connection in series-parallel control module is also linked together by PWM rectification/inverter circuit and electrical network.
2. according to claim 1 can the rechargeable battery energy feedback type pick-up unit of series, parallel, it is characterized in that: described connection in series-parallel control module comprises: connection in series-parallel receiver, SCR control module, relay-operated controller, relay, controllable silicon, connection in series-parallel receiver is connected with multiple SCR control module, multiple relay-operated controller respectively, each SCR control module is connected with two or more controllable silicons, is connected with controllable silicon between the positive pole of adjacent cell and negative pole; Each relay-operated controller is connected with two or more relays, is connected to two normally opened contacts of relay between the positive pole of adjacent cell, between negative pole.
3. according to claim 2 can the rechargeable battery energy feedback type pick-up unit of series, parallel, it is characterized in that: described SCR control module is connected with seven controllable silicons, each relay-operated controller is connected with seven relays; Described connection in series-parallel receiver adopts 8 8-digit microcontrollers of model AT89S52, and SCR control module adopts 8 TC787 SCR control chip portfolios to form, and relay-operated controller employing model is the Darlington transistor driver of ULN2803.
4. according to claim 1 can the rechargeable battery energy feedback type pick-up unit of series, parallel, it is characterized in that: described A/D modular converter adopts the A/D conversion chip of model ADS1110; The digital analog converter that D/A modular converter adopts 12 bit-types number to be DAC7611, in connection in series-parallel control module, voltage acquisition chip adopts low noise, high precision operating amplifier OP07, and current sensor is high precision manganin manganin alloy paper tinsel sampling resistor.
5. according to claim 4 can the rechargeable battery energy feedback type pick-up unit of series, parallel, it is characterized in that: described monitoring host computer is industrial electronic computing machine.
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| CN201520471579.XU CN204789948U (en) | 2015-07-03 | 2015-07-03 | Chargeable call energy repayment formula detection device that can establish ties, connect in parallel |
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| CN201520471579.XU CN204789948U (en) | 2015-07-03 | 2015-07-03 | Chargeable call energy repayment formula detection device that can establish ties, connect in parallel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105005003A (en) * | 2015-07-03 | 2015-10-28 | 枣庄金万通电子产品有限公司 | Chargeable cell energy feedback detection device being capable of series connection and parallel connection |
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2015
- 2015-07-03 CN CN201520471579.XU patent/CN204789948U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105005003A (en) * | 2015-07-03 | 2015-10-28 | 枣庄金万通电子产品有限公司 | Chargeable cell energy feedback detection device being capable of series connection and parallel connection |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20170703 |