CN106093583A - A kind of Vehicular accumulator cell Battery pack monomer impedance measurement device and method - Google Patents
A kind of Vehicular accumulator cell Battery pack monomer impedance measurement device and method Download PDFInfo
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- CN106093583A CN106093583A CN201610591663.4A CN201610591663A CN106093583A CN 106093583 A CN106093583 A CN 106093583A CN 201610591663 A CN201610591663 A CN 201610591663A CN 106093583 A CN106093583 A CN 106093583A
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- battery
- module
- accumulator
- controller
- cell
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/08—Measuring resistance by measuring both voltage and current
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
Abstract
The present invention relates to a kind of Vehicular accumulator cell Battery pack monomer impedance measurement device and method, in order to measure the AC impedance of the battery cell connected in multiple battery modules in accumulator battery, this device includes: ac-excited module: provide certain frequency and the sinusoidal excitation current of amplitude with the battery module thinking multiple series connection；Accumulator battery controller: produce exciting current in order to control ac-excited module；Current measurement module: in order to measure exciting current that ac-excited module injects to accumulator battery and detection current value is sent to accumulator battery controller；Battery cell voltage surveys meter module: in order to measure the response voltage of the battery cell of all series connection in battery module and to obtain exciting current value by communication module from accumulator battery controller, be calculated the AC impedance of battery cell.Compared with prior art, the present invention has advantages such as concentrating excitation, independent measurement, measurement accurately.
Description
Technical field
The present invention relates to pure electric automobile, plug-in hybrid-power automobile application, especially relate to a kind of vehicle-mounted storage
Battery cell monomer impedance measurement device and method.
Background technology
Along with electric automobile and the popularization and application of plug-in hybrid-power automobile, to the safety of Vehicular accumulator cell bag, can
The highest requirement is had by property.For battery management system, it is possible to learn the current age of electrokinetic cell timely and accurately
State, power output capacity, internal temperature thus carry out the prediction of thermal failure and prevent abuse etc. from having very important significance.
And above-mentioned characteristic all has very big relation, such as following several literary compositions with accumulator impedance in a certain Frequency point or a certain frequency separation
Offer: (1) LEE J H, CHOI W.Novel State-of-Charge Estimation Method for Lithium
Polymer Batteries Using Electrochemical Impedance Spectroscopy [J].Journal of
Power Electronics,2011,11(2):237-43.(2)GALEOTTI M,CINA L,GIAMMANCO C,et
al.Performance analysis and SOH(state of health)evaluation of lithium polymer
batteries through electrochemical impedance spectroscopy[J].Energy,2015,89
(678-86.(3)ZHU J G,SUN Z C,WEI X Z,et al.A new lithium-ion battery internal
temperature on-line estimate method based on electrochemical impedance
spectroscopy measurement[J].Journal of Power Sources,2015,274(990-1004)..Therefore
The impedance measurement realizing Vehicular accumulator cell bag has significant application value.
At present, the impedance measurement of the accumulator under vehicular applications does not also have preferable method or apparatus.Laboratory uses
The measuring method majority of battery AC impedance be with Linear Power Amplifier or power supply, designed use has versatility, there is volume
Greatly, efficiency is low, cost is high shortcoming, and there is no when some function is applied on electric automobile or plug-in hybrid-power automobile
Necessary.Objectively it is necessary that New Research Method bag whole to real vehicle internal battery impedance measures.Patent of invention " examine by battery impedance
Examining system, Apparatus and method for " (Authorization Notice No.: CN102809691B) and " spectroscopic battery-cell-impedance measurement arrangement " (mandate public affairs
Announcement number: CN102466766B) although giving a kind of battery cell impedance measurement device and the method for battery unit, but in reality
Some deficiency following is had: in the invention cited in (1), the device about current excitation can only be made the most respectively during reality car application
It is used in battery unit two ends and applies exciting current, need when implementing to carry out switching electrical switches, add system cost, fall
Low system reliability；(2) in the invention cited in, the measurement of response voltage lower to excitation can only carry out a battery list every time
Unit's response voltage measurement, and need and exciting bank synchronism switching to different battery units.
Summary of the invention
Defect that the purpose of the present invention is contemplated to overcome above-mentioned prior art to exist and provide a kind of and concentrate excitation, individually
Measure, measure Vehicular accumulator cell Battery pack monomer impedance measurement device and method accurately.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of Vehicular accumulator cell Battery pack monomer impedance measurement device, in order to measure in accumulator battery in multiple battery modules
The AC impedance of the battery cell of series connection, this device includes:
Ac-excited module: be connected with civil power and accumulator battery respectively, provides one with the battery module thinking multiple series connection
Determine the sinusoidal excitation current of frequency and amplitude；
Accumulator battery controller: be connected with ac-excited module, produces exciting current in order to control ac-excited module；
Current measurement module: be connected with accumulator battery controller, injects to accumulator battery in order to measure ac-excited module
Exciting current and detection current value is sent to accumulator battery controller；
Battery cell voltage surveys meter module: be provided with multiple and setting supporting with each battery module respectively, in order to measure electricity
In the module of pond the battery cell of all series connection response voltage and by communication module from accumulator battery controller obtain excitation electricity
Flow valuve, is calculated the AC impedance of battery cell.
Described battery cell voltage is surveyed meter module and is included multi-channel differential amplifying unit, multichannel AD conversion unit and storage
Battery module controller, described battery module, multi-channel differential amplifying unit, multichannel AD conversion unit and battery module
Controller is sequentially connected with, and described battery module controller is connected with accumulator battery controller by communication module.
Described ac-excited module include controller and the power factor correction device being sequentially connected with, DC/DC changer,
H bridge, transformator and output filter, described power factor correction Qi Yu city electrical connection, described output filter and electric power storage
The both positive and negative polarity of pond group connects, and described controller connects with DC/DC changer and H bridging respectively, and by CAN and electric power storage
Pond group controller communication.
Described current measurement module includes differential amplification unit, low pass filter, AD conversion unit and is arranged on defeated
Going out the shunt resistance on electric wire between wave filter and accumulator battery positive pole, described differential amplification unit is connected in parallel on shunt resistance two
End, and pass sequentially through low pass filter and AD conversion unit is connected with accumulator battery controller.
Described communication module includes vehicle-mounted ethernet router.
A kind of Vehicular accumulator cell Battery pack monomer impedance measurement method, comprises the following steps:
1) excitation is concentrated: ac-excited module produces after receiving the impedance measurement initiation command of accumulator battery controller
Corresponding frequencies, the sinusoidal excitation current of amplitude are also applied to the positive and negative interpolar of accumulator battery, make the multiple battery lists being serially connected
Body produces response voltage；
2) independent measurement: multiple battery cell voltages are surveyed meter module and surveyed the response voltage of each battery cell respectively
Amount, current measurement module obtains exciting current value simultaneously, is sent to each battery module by accumulator battery controller and controls
Device, calculates the AC impedance of battery cell according to response voltage and exciting current value.
Described step 2) specifically include following steps:
21) to carry out clock by ethernet router with multiple battery module controllers synchronization for accumulator battery controller；
22) the exciting current value under multiple Energizing cycle measured by accumulator battery controller by current measurement module, simultaneously
Multiple battery module controllers also begin to measure the response voltage of battery cell joining day stamp；
23) excitation of accumulator battery controller sends to ethernet router after being stabbed the current value joining day, Etherloop
Forwarding to multiple battery module controllers again added the timestamp of himself by device after, each battery module controller exists
After receiving the forwarding data of ethernet router, according to the timestamp of the forwarding data of ethernet router and self voltage
Data time stamp realizes time alignment, is finally calculated the AC impedance of each battery cell.
Compared with prior art, the invention have the advantages that
One, excitation is concentrated: in the battery bag ac impedance measurement device of the present invention, vehicle-mounted ac-excited module is placed in electric power storage
Group outer generation for series battery in pond concentrates excitation, has novelty, and low cost, reliability are high；
Two, independent measurement: the voltage measurement module that the present invention proposes is capable of multiple accumulator lists in series battery
Respond voltage synchronous sampling under the corresponding exciting current of unit, improve and measure efficiency, and be prone to and existing battery monitor dress of connecting
Put and carry out multiplexing；
Three, measure accurately: the vehicle-mounted Ethernet with timestamp that the present invention uses transmits electric current number as communications carrier
According to reducing the impedance computation error brought by stateless service delay.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is concentration excitation and the independent measurement method flow diagram of the present invention.
Fig. 3 is the measurement procedure figure of the voltage and current of the present invention.
Wherein, 1, ac-excited module, 11, power factor correction device, 12, DC/DC changer, 13, H bridge, 14, transformation
Device, 15, output filter, 16, controller, 2, battery module, 3, battery cell voltage survey meter module, 31, multi-channel differential puts
Big unit, 32, multichannel AD conversion unit, 33, battery module controller, 4, current measurement module, 41, differential amplification list
Unit, 42, low pass filter, 43, AD conversion unit, 44, shunt resistance, 5, accumulator battery controller, 6, communication module, 7, city
Electricity, 8, CAN.
Detailed description of the invention
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment:
In electric automobile or plug-in hybrid-power automobile are applied, mostly accumulator battery is to be passed through by multiple battery cells
Connection in series-parallel connects, and the single battery number of series connection can reach 100～200, be specifically dependent upon designed power-supply system
Electric pressure and the single electric pressure of single battery used or material system.Such as, one by 100 40Ah phosphorus
The monomer series-connected pure electric automobile accumulator battery connecting composition of acid lithium iron battery, its nominal voltage reaches 320V.And at battery list
In body grouping procedure, 10 battery cells it is composed in series a battery module 2 and is completed voltage, temperature by module level supervising device
The monitoring such as degree and management.For such application scenario, embodiments of the invention have following feature.
As it is shown in figure 1, by multi-channel differential amplifying unit 31, multichannel AD conversion unit 32, battery module controller
33 connections constitute the battery cell voltage survey meter module 3 realizing 10 single battery voltage measurements and impedance computation, this reality
Executing and include 10 similar survey meter modules in example, the most each battery module controller 33 is connected by Ethernet
To ethernet router, ethernet router is connected with accumulator battery controller 5, accumulator battery controller 5 and current measurement mould
Block 4 is connected, and is connected with ac-excited module 1 by CAN 8 simultaneously, when carrying out impedance measurement, and accumulator battery controller 5
Sending instruction by CAN 8 to the controller 16 of ac-excited module, controller 16 controls DC/DC changer according to instruction
12 and H bridges 13 produce the sinusoidal excitation current of corresponding frequencies and amplitude and are injected into the positive and negative interpolar of accumulator battery, meanwhile, store
Battery controller 5 begins to pass through current measurement module 4 and carries out the measurement of exciting current, each battery module controller 33 warp
Cross coupled battery cell voltage survey meter module 3 to carry out responding voltage measurement.After a measurement terminates, accumulator battery control
The current signal joining day that measurement is obtained by device 5 processed stabs and passes through ethernet router to each battery module controller 33
Forward exciting current value.The impedance of battery cell is counted by battery module controller 33 according to stimulus stream and response voltage
Calculate.
As shown in Figures 2 and 3, figure is to concentrate excitation and independent measurement method flow diagram and the measurement procedure of voltage and current
Figure.
The above-mentioned description to embodiment is to be understood that for ease of those skilled in the art and apply this
Bright.These embodiments obviously easily can be made various amendment by person skilled in the art, and described herein
General Principle is applied in other embodiments without through performing creative labour.Therefore, the invention is not restricted to above-mentioned enforcement
Example, those skilled in the art are according to the announcement of the present invention, and the improvement made without departing from scope and amendment all should be
Within protection scope of the present invention.
Claims (7)
1. a Vehicular accumulator cell Battery pack monomer impedance measurement device, goes here and there in multiple battery modules in order to measure in accumulator battery
The AC impedance of the battery cell of connection, it is characterised in that this device includes:
Ac-excited module (1): be connected with civil power (7) and accumulator battery respectively, with thinking that the battery module (2) of multiple series connection carries
For certain frequency and the sinusoidal excitation current of amplitude；
Accumulator battery controller (5): be connected with ac-excited module (1) by CAN (8), in order to control ac-excited mould
Block (1) produces exciting current；
Current measurement module (4): be connected with accumulator battery controller (5), in order to measure ac-excited module (1) to accumulator battery
Inject exciting current and detection current value is sent to accumulator battery controller (5)；
Battery cell voltage survey meter module (3): be provided with multiple and respectively with each battery module (2) supporting setting, in order to measure
In battery module (2) battery cell of all series connection response voltage and by communication module (6) from accumulator battery controller (5)
Obtain exciting current value, be calculated the AC impedance of battery cell.
A kind of Vehicular accumulator cell Battery pack monomer impedance measurement device the most according to claim 1, it is characterised in that described
Battery cell voltage survey meter module (3) include multi-channel differential amplifying unit (31), multichannel AD conversion unit (32) and store
Battery module controller (33), described battery module, multi-channel differential amplifying unit (31), multichannel AD conversion unit (32)
Being sequentially connected with battery module controller (33), described battery module controller (33) is by communication module (6) and storage
Battery controller (5) connects.
A kind of Vehicular accumulator cell Battery pack monomer impedance measurement device the most according to claim 1, it is characterised in that described
Ac-excited module (1) include controller (16) and the power factor correction device (11) being sequentially connected with, DC/DC changer
(12), H bridge (13), transformator (14) and output filter (15), described power factor correction device (11) and civil power (7) are even
Connecing, described output filter (15) is connected with the both positive and negative polarity of accumulator battery, and described controller (16) converts with DC/DC respectively
Device (12) and H bridge (13) connect, and are communicated with accumulator battery controller (5) by CAN (8).
A kind of Vehicular accumulator cell Battery pack monomer impedance measurement device the most according to claim 3, it is characterised in that described
Current measurement module (4) include differential amplification unit (41), low pass filter (42), AD conversion unit (43) and be arranged on
Shunt resistance (44) on electric wire between output filter (15) and accumulator battery positive pole, described differential amplification unit (41) and
It is associated in shunt resistance (44) two ends, and passes sequentially through low pass filter (42) and AD conversion unit (43) and accumulator battery control
Device (5) connects.
A kind of Vehicular accumulator cell Battery pack monomer impedance measurement device the most according to claim 1, it is characterised in that described
Communication module (6) include vehicle-mounted ethernet router.
6. apply the survey according to the Vehicular accumulator cell Battery pack monomer impedance measurement device described in any one of claim 1-5 for one kind
Metering method, it is characterised in that comprise the following steps:
1) excitation is concentrated: ac-excited module produces after receiving the impedance measurement initiation command of accumulator battery controller accordingly
Frequency, the sinusoidal excitation current of amplitude are also applied to the positive and negative interpolar of accumulator battery, make the multiple battery cells being serially connected produce
Raw response voltage；
2) independent measurement: multiple battery cell voltages are surveyed meter module and measured the response voltage of each battery cell respectively,
Current measurement module obtains exciting current value simultaneously, is sent to each battery module controller by accumulator battery controller,
The AC impedance of battery cell is calculated according to response voltage and exciting current value.
A kind of Vehicular accumulator cell Battery pack monomer impedance measurement method the most according to claim 6, it is characterised in that described
Step 2) specifically include following steps:
21) to carry out clock by ethernet router with multiple battery module controllers synchronization for accumulator battery controller；
22) the exciting current value under multiple Energizing cycle measured by accumulator battery controller by current measurement module, the most multiple
Battery module controller also begins to measure the response voltage of battery cell joining day stamp；
23) excitation of accumulator battery controller sends to ethernet router after being stabbed the current value joining day, ethernet router
Forwarding to multiple battery module controllers after again adding the timestamp of himself, each battery module controller is receiving
After the forwarding data of ethernet router, according to the timestamp of the forwarding data of ethernet router and self voltage data
Timestamp realizes time alignment, is finally calculated the AC impedance of each battery cell.
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| CN201610591663.4A CN106093583B (en) | 2016-07-26 | 2016-07-26 | A kind of Vehicular accumulator cell group battery cell impedance measurement device and method |
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| CN201610591663.4A CN106093583B (en) | 2016-07-26 | 2016-07-26 | A kind of Vehicular accumulator cell group battery cell impedance measurement device and method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106772089A (en) * | 2016-12-28 | 2017-05-31 | 深圳市森派新能源科技有限公司 | Power of battery method of testing and device based on staircase waveform input |
| CN110869785A (en) * | 2018-10-31 | 2020-03-06 | 深圳市大疆创新科技有限公司 | Online identification method and device for battery parameters |
| CN111213063A (en) * | 2017-10-16 | 2020-05-29 | 尼亚布科知识产权控股有限责任公司 | Battery monomer monitoring system |
| DE102019102472A1 (en) | 2019-01-31 | 2020-08-06 | Audi Ag | Method for determining parameter values of a model of an electrochemical cell of a battery cell in a battery of a motor vehicle, and control device and motor vehicle battery |
| CN112005125A (en) * | 2018-04-26 | 2020-11-27 | 宝马股份公司 | Diagnostic method and diagnostic system for electrochemical energy storage cells |
| CN112731180A (en) * | 2020-12-28 | 2021-04-30 | 上能电气股份有限公司 | Energy storage system and internal resistance detection method thereof |
| CN116148698A (en) * | 2023-04-18 | 2023-05-23 | 山东艾诺智能仪器有限公司 | Online alternating current impedance tester for fuel cell |
| WO2023165027A1 (en) * | 2022-03-04 | 2023-09-07 | 吉林大学 | Online impedance measurement apparatus for fuel cell stack |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466766A (en) * | 2010-10-28 | 2012-05-23 | Nxp股份有限公司 | Spectroscopic battery-cell-impedance measurement arrangement |
| CN102809691A (en) * | 2011-06-01 | 2012-12-05 | Nxp股份有限公司 | Battery impedance detection system, apparatus and method |
| US20130301323A1 (en) * | 2012-05-10 | 2013-11-14 | Denso Corporation | Power conversion apparatus |
| US20140043860A1 (en) * | 2012-08-07 | 2014-02-13 | Apple Inc. | Controlling an adapter transformer voltage |
| CN104049599A (en) * | 2013-03-15 | 2014-09-17 | 力博特公司 | Mesh network synchronous power monitoring systems and methods |
| CN104181395A (en) * | 2014-08-25 | 2014-12-03 | 同济大学 | Device for measuring alternating-current impedance of lithium ion battery pack individual |
| CN204013245U (en) * | 2014-06-04 | 2014-12-10 | 天一宏业武汉科技发展有限公司 | High-frequency and high-voltage sinewave output power supply with PFC |
| CN105453380A (en) * | 2013-06-21 | 2016-03-30 | 通用汽车环球科技运作有限责任公司 | Apparatus and method for grid-to-vehicle battery charging |
| CN205280824U (en) * | 2015-12-09 | 2016-06-01 | 深圳奥特迅电力设备股份有限公司 | Storage battery alternating current impedance measuring circuit and mains operated system |
-
2016
- 2016-07-26 CN CN201610591663.4A patent/CN106093583B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466766A (en) * | 2010-10-28 | 2012-05-23 | Nxp股份有限公司 | Spectroscopic battery-cell-impedance measurement arrangement |
| CN102809691A (en) * | 2011-06-01 | 2012-12-05 | Nxp股份有限公司 | Battery impedance detection system, apparatus and method |
| US20130301323A1 (en) * | 2012-05-10 | 2013-11-14 | Denso Corporation | Power conversion apparatus |
| US20140043860A1 (en) * | 2012-08-07 | 2014-02-13 | Apple Inc. | Controlling an adapter transformer voltage |
| CN104049599A (en) * | 2013-03-15 | 2014-09-17 | 力博特公司 | Mesh network synchronous power monitoring systems and methods |
| CN105453380A (en) * | 2013-06-21 | 2016-03-30 | 通用汽车环球科技运作有限责任公司 | Apparatus and method for grid-to-vehicle battery charging |
| CN204013245U (en) * | 2014-06-04 | 2014-12-10 | 天一宏业武汉科技发展有限公司 | High-frequency and high-voltage sinewave output power supply with PFC |
| CN104181395A (en) * | 2014-08-25 | 2014-12-03 | 同济大学 | Device for measuring alternating-current impedance of lithium ion battery pack individual |
| CN205280824U (en) * | 2015-12-09 | 2016-06-01 | 深圳奥特迅电力设备股份有限公司 | Storage battery alternating current impedance measuring circuit and mains operated system |
Non-Patent Citations (2)
| Title |
|---|
| 王迎春 等: "单位功率因数变压变频单相正弦波发生器", 《通信电源技术》 * |
| 魏学哲 等: "锂离子动力电池内阻模型与实验研究", 《同济大学学报（自然科学版）》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106772089A (en) * | 2016-12-28 | 2017-05-31 | 深圳市森派新能源科技有限公司 | Power of battery method of testing and device based on staircase waveform input |
| CN111213063A (en) * | 2017-10-16 | 2020-05-29 | 尼亚布科知识产权控股有限责任公司 | Battery monomer monitoring system |
| CN112005125A (en) * | 2018-04-26 | 2020-11-27 | 宝马股份公司 | Diagnostic method and diagnostic system for electrochemical energy storage cells |
| CN112005125B (en) * | 2018-04-26 | 2023-10-31 | 宝马股份公司 | Diagnostic method and diagnostic system for electrochemical energy storage cells |
| CN110869785A (en) * | 2018-10-31 | 2020-03-06 | 深圳市大疆创新科技有限公司 | Online identification method and device for battery parameters |
| WO2020087338A1 (en) * | 2018-10-31 | 2020-05-07 | 深圳市大疆创新科技有限公司 | Method and device for online recognition of battery parameter |
| DE102019102472A1 (en) | 2019-01-31 | 2020-08-06 | Audi Ag | Method for determining parameter values of a model of an electrochemical cell of a battery cell in a battery of a motor vehicle, and control device and motor vehicle battery |
| CN112731180A (en) * | 2020-12-28 | 2021-04-30 | 上能电气股份有限公司 | Energy storage system and internal resistance detection method thereof |
| WO2023165027A1 (en) * | 2022-03-04 | 2023-09-07 | 吉林大学 | Online impedance measurement apparatus for fuel cell stack |
| CN116148698A (en) * | 2023-04-18 | 2023-05-23 | 山东艾诺智能仪器有限公司 | Online alternating current impedance tester for fuel cell |
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