CN2876788Y - Multi-point battery voltage real-time monitor - Google Patents
Multi-point battery voltage real-time monitor Download PDFInfo
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- CN2876788Y CN2876788Y CN 200620053960 CN200620053960U CN2876788Y CN 2876788 Y CN2876788 Y CN 2876788Y CN 200620053960 CN200620053960 CN 200620053960 CN 200620053960 U CN200620053960 U CN 200620053960U CN 2876788 Y CN2876788 Y CN 2876788Y
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Abstract
A Multi-point battery voltage real-time monitor. The monitor is composed of an upper computer and an online voltage testing device which collects the voltage of every battery in every battery group in real time. The testing device comprises of an electric testing block, a secondary select switch array which combines a plurality of several-to-one multi-channel switches and high- voltage photon-coupled transistors, a voltage-testing and A/D conversion block. Because the structure that combined a plurality of several-to-one multi-channel switches and high- voltage photon-coupled transistors is used, and photon-coupled transistors is used to separately select battery to be measured by A/D conversion block, meanwhile several-to-one multi-channel switch is used to select a certain photoelectric switch, the result is that the true voltage of every battery can be read by A/D conversion block, the parallel switches in every battery group can not form a short-cut circuit, the safety of measuring process is ensured and the monitor can endure high voltage produced in series circuit.
Description
Technical field
The utility model relates to a kind of automated monitor, particularly a kind of monitoring equipment of the voltage of monitoring plurality Battery pack simultaneously that is used for.
Background technology
The method that the voltage measurement scheme of many batteries series battery is normally measured for the A/D analog to digital converter by each cell voltage of switching gate.Series battery voltage measurement in the past is to supply with the A/D sampling by each cell voltage of bulky relay gating, and this measuring method makes that The whole control circuit volume is big, and power consumption is many and serviceable life is limited.Afterwards along with the useful again electronic switch of electronic technology development (as 4051 or 4067 etc.) each passage battery voltage measurement of gating.The deficiency of bringing with relay array can be overcome with electronic switch, but, the high voltage that a plurality of battery strings coproduction are given birth to can't be born owing to tens volts of its withstand voltage.Because the needs of every profession and trade, some accumulator applying unit require accumulator in the important machine room (as some mainframe computer, telecommunications transcriber reserve battery) is carried out all weather surveillance, do not allow to continue when wherein battery has fault to use.And these units have relatively high expectations to surveillance: 1, do not provide power supply (promptly requiring can finish monitoring with the very little energy) to test macro; 2, volume is little, in light weight; 3, safety coefficient height, measuring system can not cause battery short circuit; 4, fault is arranged is alarm to battery; 5, safeguard the characteristics such as convenient and swift of replacing.Can't satisfy as each battery voltage monitoring (total voltage reaches 580VDC) in the electric battery of using nearly 48 joint 12V batteries series connection with above-mentioned traditional measuring method.
Summary of the invention
The purpose of this utility model is the existence at the problems referred to above, and the multiple spot cell voltage real-time monitoring device that a kind of safety coefficient height, being suitable for of can bearing that most battery strings coproduction give birth to that high pressure detect accurately and reliably require battery detecting in the every profession and trade is provided.
The purpose of this utility model is achieved through the following technical solutions:
A kind of multiple spot cell voltage real-time monitoring device, comprise host computer and a plurality of pick-up unit that respectively each battery in each electric battery is carried out the real-time voltage collection, wherein each pick-up unit is connected with host computer by its COM port respectively and is read the real time data of detected each cell voltage of pick-up unit and carried out data-storing by host computer, data preparation is analyzed, datagraphic shows, data are printed, the processing of reporting to the police, be characterized in that described pick-up unit comprises microelectronics detecting unit (CPU), the gating switch array, voltage measurement and A/D converting unit, wherein gating switch array many multiselects one type hyperchannel of serving as reasons is selected electronic switch and many secondary switch array gating structures that optical coupled switch connects to form, microelectronics control module (CPU) is controlled the gating switch array circularly and the voltage of each corresponding battery is switched to voltage measurement and A/D converting unit and is read the magnitude of voltage of corresponding battery and its buffer zone that deposits microelectronics control module (CPU) in is stored by voltage measurement and A/D converting unit, simultaneously, microelectronics control module (CPU) the reading of data order of sending according to host computer again sends each battery voltage value in its buffer zone to host computer and carries out corresponding processing.
Wherein: above-mentioned microelectronics control module (CPU) employing MEGA8515 or AT89C51 or PIC16C64 or other have 8 bit timing device/counters of independent pre-divider and comparator function, has pre-divider, 16 bit timing device/counters of comparing function and capture function, programmable serial USART, can work in the SPI serial line interface of main frame/slave mode, programmable watchdog timer with individual sheets oscillator, speed class is the microelectronics control integrated circuit of 0～8MHz.Above-mentioned gating switch array comprises that polycomponent do not select first order gating switch array that electronic switch and at least two first order optical coupled switch form and at least one group respectively by at least one second level multiselect one type hyperchannel selection electronic switch and at least one the two-stage gating switch array that second level optical coupled switch is formed by at least one first order multiselect one type hyperchannel, wherein first order multiselect one type hyperchannel select electronic switch respectively with microelectronics control module (CPU), multiselect one type hyperchannel in the second level selects electronic switch to connect, and described first order multiselect one type hyperchannel is selected electronic switch to be controlled by microelectronics control module (CPU) and second level multiselect one type hyperchannel to select electronic switch and control each first order optical coupled switch and the second level optical coupled switch of each corresponding battery by correspondence is communicated with voltage measurement and A/D converting unit, second level multiselect one type hyperchannel select electronic switch respectively with microelectronics control module (CPU), each first order multiselect one type hyperchannel selects electronic switch and each second level optical coupled switch to connect, and multiselect one type hyperchannel in the described second level is selected electronic switch to be controlled by microelectronics control module (CPU) and controlled each first order multiselect one type hyperchannel and select electronic switch and each second level optical coupled switch and each corresponding battery is communicated with voltage measurement and A/D converting unit by corresponding first order optical coupled switch.Above-mentioned first order multiselect one type hyperchannel selection electronic switch employing CD4067 or CD4051 or MAX396 or other have the multiselect one type electronic switch that hyperchannel is selected; Above-mentioned second level multiselect one type hyperchannel selection electronic switch employing CD4051 or 74LS138 or MAX396 or other have electronic switch or logic switch or its combination of multiselect one type of hyperchannel selection; Above-mentioned first order optical coupled switch and second level optical coupled switch adopt AC30 or AA30 or AC31 or other withstand voltage height, load current height, drive current is low, conducting resistance is little optical coupled switch.Above-mentioned voltage measurement and A/D converting unit comprise filtering circuit, A/D conversion integration block, high precision reference supply unit, wherein the A/D conversion integration block adopts AD7705 or AD7710 or AD7715 or other to have high-precision A/D modulus sampling integrated package of a bidirectional serial communication port of controller calibration, clock oscillator, the digital filter of band static RAM (SRAM) in a ∑-Δ ADC, the sheet, described filtering circuit by be connected between each second level optical coupled switch and A/D conversion integration block two input ends by inductance L
2, capacitor C
11And inductance L
3, capacitor C
12Form, it is used for the AC portion filtering with each cell voltage, the high precision reference supply unit is by high precision reference power supply IC
10And the peripheral circuit composition, it is used to the A/D conversion integration block that high-precision reference voltage is provided, wherein high precision reference power supply IC
10Adopt IRF192 or AD780 or AD580 or other to have the integrated power supply of high precision reference.
The utility model is owing to adopt the measure of the two-stage switching gate structure of being selected a type selector switch to combine with many high voltage bearing optical coupled switch to constitute by many hyperchannels, the structure of the utilizing high pressure resistant optical coupled switch array arbitrary cell voltage in the gating electric battery isolator measures for the A/D converting unit, utilizes a certain optoelectronic switch of selector switch gating of unique gate type again; Need only control its different gating switch in regular turn by the microelectronics control module this moment, just can make A/D read the voltage measured value of variant battery, make each switch conducting simultaneously in parallel in the electric battery, guaranteed that every grade of switch is merely able to have an action to be in closure state all the time, can not cause short circuit between the battery because of misoperation.Guaranteed the security in the measuring process.And guarantee that proving installation can bear the high voltage that series circuit produces.Make the proving installation measuring process reduce to minimum (because its insulation resistance is big) with the light disconnector simultaneously to the influence of cell circuit.Be communicated with the instant voltage that just can see each battery by computer interface in real time by 485 buses with the microelectronics control module this moment again with host computer, the change in voltage curve in any time zone, and enquiry of historical data etc., thus reach the purpose of this utility model.
Describe basic structure of the present utility model and principle of work in detail below in conjunction with the utility model:
Description of drawings
Fig. 1 is a composition structural representation of the present utility model;
Fig. 2 is the structure composition frame chart of pick-up unit of the present utility model;
Fig. 3 is the circuit theory diagrams of pick-up unit of the present utility model;
Fig. 4 is a switching gate method structural drawing of the present utility model.
Embodiment
As Fig. 1～shown in Figure 4, a kind of multiple spot cell voltage real-time monitoring device described in the utility model, comprise host computer and a plurality of pick-up unit that respectively each battery in each electric battery is carried out the real-time voltage collection, wherein each pick-up unit is connected with host computer by its COM port respectively and is read the real time data of detected each cell voltage of pick-up unit and carried out data-storing by host computer, data preparation is analyzed, datagraphic shows, data are printed, the processing of reporting to the police, it is characterized in that described pick-up unit comprises microelectronics detecting unit (CPU), the gating switch array, voltage measurement and A/D converting unit, wherein gating switch array many multiselects one type hyperchannel of serving as reasons is selected electronic switch and many secondary switch array gating structures that optical coupled switch connects to form, microelectronics control module (CPU) is controlled the gating switch array circularly and the voltage of each corresponding battery is switched to voltage measurement and A/D converting unit and is read the magnitude of voltage of corresponding battery and its buffer zone that deposits microelectronics control module (CPU) in is stored by voltage measurement and A/D converting unit, simultaneously, microelectronics control module (CPU) the reading of data order of sending according to host computer again sends each battery voltage value in its buffer zone to host computer and carries out corresponding processing.Wherein 458 buses are adopted in the communication between host computer and the pick-up unit, and line is simple because 485 buses have, the characteristics of long transmission distance, strong interference immunity.The data that are specially adapted between on-the-spot many slave computers and the computer transmit.With the COM port of one 485 bus, host computer (computer) is the real time data that reads its each battery by 485 buses and each pick-up unit communication, deposits in the database in the computer in this moment each pick-up unit.The operator can see the instant voltage of each battery in real time by computer interface, the change in voltage curve in any time zone, and enquiry of historical data etc. are so the utility model is a typical distribution formula measuring system on the whole.
It is the microelectronics control integrated circuit of 0～8MHz that above-mentioned microelectronics control module (CPU) adopts MEGA8515 or AT89C51 or PIC16C64 or other to have 8 bit timing device/counters of independent pre-divider and comparator function, 16 bit timing device/counters with pre-divider, comparing function and capture function, programmable serial USART, the SPI serial line interface that can work in main frame/slave mode, the programmable watchdog timer with individual sheets oscillator, speed class.As Fig. 2～shown in Figure 4, microelectronics control module (CPU) adopts the Mega8515 type single-chip microcomputer of Atmel company in the present embodiment, and this chip is the 8-bit microprocessor of high-performance, low-power consumption.Its characteristic is as follows:
Risc architecture
Article-130, instruction is the single clock period most of instruction times
-32 8 general purpose working registers
-full quiescent operation
-when working in 16MHz performance up to 16MIPS
The hardware multiplier of-two clock period of need
The In-System Programmable Flash of-8K byte
The EEPROM of-512 bytes
The on-chip SRAM of-512 bytes
The peripheral hardware characteristics
-have 8 bit timing device/counters of independent pre-divider and comparator function
-one 16 bit timing device/counter with pre-divider, comparing function and capture function
-programmable serial USART
-can work in the SPI serial line interface of main frame/slave mode
-have a programmable watchdog timer of individual sheets internal oscillator
Speed class
-0-8MHz?ATmega8515L
Compared with the single-chip microcomputer of 51 kernels, the Mega8515 single-chip microcomputer has advantages such as instruction is simplified, arithmetic speed height, function are many.Be specially adapted to the application of field control detecting unit.
Above-mentioned gating switch array comprises that polycomponent do not select first order gating switch array that electronic switch and at least two first order optical coupled switch form and at least one group respectively by at least one second level multiselect one type hyperchannel selection electronic switch and at least one the two-stage gating switch array that second level optical coupled switch is formed by at least one first order multiselect one type hyperchannel, wherein first order multiselect one type hyperchannel select electronic switch respectively with microelectronics control module (CPU), multiselect one type hyperchannel in the second level selects electronic switch to connect, and described first order multiselect one type hyperchannel is selected electronic switch to be controlled by microelectronics control module (CPU) and second level multiselect one type hyperchannel to select electronic switch and control each first order optical coupled switch and the second level optical coupled switch of each corresponding battery by correspondence is communicated with voltage measurement and A/D converting unit, second level multiselect one type hyperchannel select electronic switch respectively with microelectronics control module (CPU), each first order multiselect one type hyperchannel selects electronic switch and each second level optical coupled switch to connect, and multiselect one type hyperchannel in the described second level is selected electronic switch to be controlled by microelectronics control module (CPU) and controlled each first order multiselect one type hyperchannel and select electronic switch and each second level optical coupled switch and each corresponding battery is communicated with voltage measurement and A/D converting unit by corresponding first order optical coupled switch.Above-mentioned first order multiselect one type hyperchannel selection electronic switch employing CD4067 or CD4051 or MAX396 or other have the multiselect one type electronic switch that hyperchannel is selected; Above-mentioned second level multiselect one type hyperchannel selection electronic switch employing CD4051 or 74LS138 or MAX396 or other have electronic switch or logic switch or its combination of multiselect one type of hyperchannel selection; Above-mentioned first order optical coupled switch and second level optical coupled switch adopt AC30 or AA30 or AC31 or AA31 or AC38 or AA38 or AE71 or AC30S or AB30S or other withstand voltage height, load current height, drive current is low, conducting resistance is little optical coupled switch.Wherein for reach power saving, volume is little, high pressure resistant and safe requirement, in the present embodiment as shown in Figure 3, optical coupled switch selects for use the AC30 of TOWARD company to be because its proof voltage is 100mA for the 400V load current, but the drive current maximum is 5mA, and its conducting resistance is 30 Ω to the maximum and insulation is the excellent performance of 3750Vrms.The voltage sample that is highly suitable for high input impedance switches purposes.Tens volts of ability that traditional electronic switch is withstand voltage do not have isolation again; Conventional relay volume is big, electricity consumption is many, and this class device all can't be compared with AC30 in the application of voltage-type commutation circuit.Because if the total voltage after the too many battery series connection too big (reaching 576V as 48 12V series connection) is so adopt two-stage switch arrays gatings (as shown in Figure 3) in the present embodiment.Promptly allow two AC30 connect and bear high voltage (two are closed the withstand voltage 800V that is).In order to ensure security in the gating process, cause short circuit between the battery when preventing owing to the chip device inefficacy.On circuit, use eight and select an electronic switch CD4051 (IC3 among Fig. 3), guarantee to exist in the switch of the second level wherein switch closure action, avoided the chance of second level switch short circuit as partial three AC30 gatings.In like manner, select for use 16 to select an electronic switch CD4067 (IC5 among Fig. 3, IC6, IC7), guaranteed can not cause short circuit between the battery in each 16 switching gate process of the first order as the gating of first order switch (AC30).Have only one road battery selected in order to make in all batteries gating process, use eight in the present embodiment again and select an integrated circuit 74LS138 (IC4 among Fig. 3), its effect is the sheet choosing of three CD4067 chips (IC5 among Fig. 3, IC6, IC7), purpose is to make three CD4067 (IC5 among Fig. 3, IC6, IC7) per moment can only have that wherein a slice is in running order, other off working state for disconnecting.Guaranteed that so just every grade of switch is merely able to have an action to be in closure state all the time, can not cause short circuit between the battery because of misoperation.Guaranteed the security in the measuring process.
Above-mentioned voltage measurement and A/D converting unit comprise filtering circuit, A/D conversion integration block, high precision reference supply unit, wherein the A/D conversion integration block adopts AD7705 or AD7710 or AD7715 or other to have high-precision A/D modulus sampling integrated package of a bidirectional serial communication port of controller calibration, clock oscillator, the digital filter of band static RAM (SRAM) in a ∑-Δ ADC, the sheet, described filtering circuit by be connected between each second level optical coupled switch and A/D conversion integration block two input ends by inductance L
2, capacitor C
11And inductance L
3, capacitor C
12Form, it is used for the AC portion filtering with each cell voltage, the high precision reference supply unit is by high precision reference power supply IC
10And the peripheral circuit composition, it is used to the A/D conversion integration block that high-precision reference voltage is provided, wherein high precision reference power supply IC
10Adopt IRF192 or AD780 or AD580 or other to have the integrated power supply of high precision reference.In the present embodiment, the A/D conversion integration block is selected the high-precision A/D modulus sampling A AD7705 of AD company for use.This circuit is the ∑-Δ type sixteen bit A/D converter of band digital filtering in a kind of, and it comprises calibration microcontroller, clock oscillator, digital filter and the bidirectional serial communication port of band static RAM (SRAM) in a ∑-Δ ADC, the sheet.The source current of this device is 320uA only, makes it can be used for battery powered apparatus ideally.AD7705 comprises 2 programmable-gain fully differential analog input channels, and the optional gain of input channel is 1,2,4,8,16,32,64 and 128.AD7705 is widely with the conversion of the low frequency signal in Industry Control or the technology controlling and process.The voltage measurement principle of pick-up unit as shown in Figure 3, its principle of work is: when switch arrays gating cell voltage is input to the 7th, 8 pin of AD7705, its signal by capacitor C 11, C12 and inductance L 2, L3 with the AC compounent filtering in the extraneous input circuit (, can bring a spot of Alternating Component) because battery in use is in bulk charge or floating charging state sometimes.With the 2.5V benchmark of high precision reference power supply IRF192 (IC10), guarantee value precision height in the circuit as AD7705.Single-chip microcomputer reads magnitude of voltage by serial communication port DRY, SCLK, DIN, DOUT (the 13rd in the chip, 14,1,12 pin) again through a few tens of milliseconds time-delay back (it is stable that voltage is in).Communication mode SPI mode.Thereby make the entire cell voltage sample very accurate, the characteristics of serial line interface make it and single-chip microcomputer in conjunction with more efficient (compare economize very much pin with the parallel port type chip).Pick-up unit structure as Fig. 2 is formed shown in the block scheme, and each pick-up unit inside of the present utility model also is provided with a DC/DC insulating power supply.Its effect makes that each pick-up unit internal work power supply is stable 5V voltage, and isolates mutually with the tested battery in outside, not influenced by battery tension.Because device is all selected the power conservation type device for use in the entire circuit, electricity consumption is few when making pick-up unit work.So the DC/DC insulating power supply is selected the ZUS2R2405 (2W) of Japanese Cosel company for use.Simultaneously, device has abundant function software in the microelectronics control module of the present utility model (CPU), and computer between communication on adopted interrupt mode, when promptly the host computer computer does not have order, just continuous each the cell voltage data of circulating sampling of pick-up unit.When host computer was sent order at any time, pick-up unit just responded, and sent out voltage data current and gave host computer.At this moment, except scm software, contain abundant function software in the utility model host computer computer.Upper computer software comprises each pick-up unit data read, functions such as demonstration, database preservation, data query, datagraphic demonstration, data printing are analyzed in data preparation.In addition, find have fault person promptly to send warning, make operating personnel to handle immediately if host computer carries out analysis and judgement to each only battery operated situation.Therefore before the microcomputer of duty room, just can the ruuning situation of all accumulators in scene be come into plain view.By the keyboard shirtsleeve operation, just can print the form that fully reflects battery quality.In general every Battery pack is joined a pick-up unit, and the number of every Battery pack can reach 48, and a setting only needs a microcomputer.Owing to used 3280 485 communication chips in the pick-up unit, can hang one 255 nodes on this bus, make the measurable in theory cell number of total system can reach about 12000 (48 * 250), the utility model can satisfy the measurement requirement of All Jobs point.
Claims (5)
1, a kind of multiple spot cell voltage real-time monitoring device, comprise host computer and a plurality of pick-up unit that respectively each battery in each electric battery is carried out the real-time voltage collection, wherein each pick-up unit is connected with host computer by its COM port respectively and is read the real time data of detected each cell voltage of pick-up unit and carried out data-storing by host computer, data preparation is analyzed, datagraphic shows, data are printed, the processing of reporting to the police, it is characterized in that described pick-up unit comprises microelectronics detecting unit (CPU), the gating switch array, voltage measurement and A/D converting unit, wherein gating switch array many multiselects one type hyperchannel of serving as reasons is selected electronic switch and many secondary switch array gating structures that optical coupled switch connects to form, microelectronics control module (CPU) is controlled the gating switch array circularly and the voltage of each corresponding battery is switched to voltage measurement and A/D converting unit and is read the magnitude of voltage of corresponding battery and its buffer zone that deposits microelectronics control module (CPU) in is stored by voltage measurement and A/D converting unit, simultaneously, microelectronics control module (CPU) the reading of data order of sending according to host computer again sends each battery voltage value in its buffer zone to host computer and carries out corresponding processing.
2, multiple spot cell voltage real-time monitoring device according to claim 1 is characterized in that above-mentioned microelectronics control module (CPU) adopts MEGA8515 or AT89C51 or PIC16C64 or other to have 8 bit timing device/counters of independent pre-divider and comparator function, 16 bit timing device/counters with pre-divider, comparing function and capture function, programmable serial USART, can work in the SPI serial line interface of main frame/slave mode, the programmable watchdog timer speed class with individual sheets oscillator is the microelectronics control integrated circuit of 0～8MHz.
3, multiple spot cell voltage real-time monitoring device according to claim 1, it is characterized in that above-mentioned gating switch array comprises that polycomponent do not select first order gating switch array that electronic switch and at least two first order optical coupled switch form and at least one group respectively by at least one second level multiselect one type hyperchannel selection electronic switch and at least one the two-stage gating switch array that second level optical coupled switch is formed by at least one first order multiselect one type hyperchannel, wherein first order multiselect one type hyperchannel select electronic switch respectively with microelectronics control module (CPU), multiselect one type hyperchannel in the second level selects electronic switch to connect, and described first order multiselect one type hyperchannel is selected electronic switch to be controlled by microelectronics control module (CPU) and second level multiselect one type hyperchannel to select electronic switch and control each first order optical coupled switch and the second level optical coupled switch of each corresponding battery by correspondence is communicated with voltage measurement and A/D converting unit, second level multiselect one type hyperchannel select electronic switch respectively with microelectronics control module (CPU), each first order multiselect one type hyperchannel selects electronic switch and each second level optical coupled switch to connect, and multiselect one type hyperchannel in the described second level is selected electronic switch to be controlled by microelectronics control module (CPU) and controlled each first order multiselect one type hyperchannel and select electronic switch and each second level optical coupled switch and each corresponding battery is communicated with voltage measurement and A/D converting unit by corresponding first order optical coupled switch.
4, multiple spot cell voltage real-time monitoring device according to claim 3 is characterized in that above-mentioned first order multiselect one type hyperchannel selection electronic switch employing CD4067 or CD4051 or MAX396 or other have the multiselect one type electronic switch that hyperchannel is selected; Above-mentioned second level multiselect one type hyperchannel selection electronic switch employing CD4051 or 74LS138 or MAX396 or other have electronic switch or logic switch or its combination of multiselect one type of hyperchannel selection; Above-mentioned first order optical coupled switch and second level optical coupled switch adopt AC30 or AA30 or AC31 or other withstand voltage height, load current height, drive current is low, conducting resistance is little optical coupled switch.
5, multiple spot cell voltage real-time monitoring device according to claim 1, it is characterized in that above-mentioned voltage measurement and A/D converting unit comprise filtering circuit, the A/D conversion integration block, the high precision reference supply unit, wherein the A/D conversion integration block adopts AD7705 or AD7710 or AD7715 or other to have a ∑-Δ ADC, the controller calibration of band static RAM (SRAM) in the sheet, clock oscillator, the high-precision A of a bidirectional serial communication port of digital filter/D modulus sampling integrated package, described filtering circuit by be connected between each second level optical coupled switch and A/D conversion integration block two input ends by inductance L
2, capacitor C
11And inductance L
3, capacitor C
12Form, it is used for the AC portion filtering with each cell voltage, the high precision reference supply unit is by high precision reference power supply IC
10And the peripheral circuit composition, it is used to the A/D conversion integration block that high-precision reference voltage is provided, wherein high precision reference power supply IC
10Adopt IRF192 or AD780 or AD580 or other to have the integrated power supply of high precision reference.
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| CN100460890C (en) * | 2007-06-04 | 2009-02-11 | 中南大学 | Multichannel precision secondary batteries testing system |
| CN102467436A (en) * | 2010-11-03 | 2012-05-23 | 北京普源精电科技有限公司 | Power supply data display method and monitor |
| CN103311980A (en) * | 2012-03-07 | 2013-09-18 | 三美电机株式会社 | Battery voltage monitor circuit |
| CN103675495A (en) * | 2012-09-17 | 2014-03-26 | 南京普爱射线影像设备有限公司 | Electronic and electrical synchronous test device |
| CN104749523A (en) * | 2013-12-25 | 2015-07-01 | 天维讯达无线电设备检测（北京）有限责任公司 | Device for acquiring electrical characteristics of lithium battery pack |
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| CN106646255A (en) * | 2016-12-15 | 2017-05-10 | 中国神华能源股份有限公司 | Battery pack inspection device |
| CN107271915A (en) * | 2017-07-11 | 2017-10-20 | 青岛巨树教育培训有限公司 | One kind realizes the program-controlled method of circuit in battery circuit using logic controller |
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| CN100460890C (en) * | 2007-06-04 | 2009-02-11 | 中南大学 | Multichannel precision secondary batteries testing system |
| CN102109539B (en) * | 2009-12-25 | 2016-01-20 | 北京普源精电科技有限公司 | A kind of data processing method of multi-channel data acquisition unit |
| CN102467436A (en) * | 2010-11-03 | 2012-05-23 | 北京普源精电科技有限公司 | Power supply data display method and monitor |
| CN102467436B (en) * | 2010-11-03 | 2017-08-25 | 北京普源精电科技有限公司 | The display methods and monitor of a kind of power data |
| CN103311980A (en) * | 2012-03-07 | 2013-09-18 | 三美电机株式会社 | Battery voltage monitor circuit |
| CN103675495A (en) * | 2012-09-17 | 2014-03-26 | 南京普爱射线影像设备有限公司 | Electronic and electrical synchronous test device |
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| CN108206121B (en) * | 2017-12-29 | 2019-08-23 | 哈尔滨工大测控技术有限公司 | 1 switching system of multiselect |
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