CN110190347A - A kind of lithium battery management system applied to communication base station - Google Patents
A kind of lithium battery management system applied to communication base station Download PDFInfo
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- CN110190347A CN110190347A CN201910465303.3A CN201910465303A CN110190347A CN 110190347 A CN110190347 A CN 110190347A CN 201910465303 A CN201910465303 A CN 201910465303A CN 110190347 A CN110190347 A CN 110190347A
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 177
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 174
- 238000004891 communication Methods 0.000 title claims abstract description 19
- 230000007613 environmental effect Effects 0.000 claims abstract description 20
- 238000003860 storage Methods 0.000 claims abstract description 4
- 230000005611 electricity Effects 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 22
- 230000008439 repair process Effects 0.000 claims description 17
- 239000000178 monomer Substances 0.000 claims description 13
- 230000003862 health status Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 230000036541 health Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 3
- 238000010295 mobile communication Methods 0.000 claims description 3
- 238000007726 management method Methods 0.000 description 61
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 9
- 229910001416 lithium ion Inorganic materials 0.000 description 9
- 239000002253 acid Substances 0.000 description 8
- 238000004422 calculation algorithm Methods 0.000 description 7
- 230000015556 catabolic process Effects 0.000 description 7
- 238000006731 degradation reaction Methods 0.000 description 7
- 238000007599 discharging Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 6
- 238000003745 diagnosis Methods 0.000 description 6
- 239000011149 active material Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 239000005955 Ferric phosphate Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 229940032958 ferric phosphate Drugs 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 3
- 229910000399 iron(III) phosphate Inorganic materials 0.000 description 3
- 208000032953 Device battery issue Diseases 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 235000007516 Chrysanthemum Nutrition 0.000 description 1
- 244000189548 Chrysanthemum x morifolium Species 0.000 description 1
- 241001269238 Data Species 0.000 description 1
- QSNQXZYQEIKDPU-UHFFFAOYSA-N [Li].[Fe] Chemical compound [Li].[Fe] QSNQXZYQEIKDPU-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000006578 abscission Effects 0.000 description 1
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- 238000013459 approach Methods 0.000 description 1
- 238000013473 artificial intelligence Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000013501 data transformation Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000012631 diagnostic technique Methods 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 238000012850 discrimination method Methods 0.000 description 1
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- 230000017525 heat dissipation Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
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- 238000010248 power generation Methods 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The present invention provides a kind of lithium battery management systems applied to communication base station, comprising: lithium battery management system is connect with lithium battery, for acquiring the floor data and environmental data of lithium battery, and is stored；Radio transmitting device, for being wirelessly transferred the floor data and environmental data of lithium battery management system storage；Battery cloud platform, for obtaining the floor data and environmental data of radio transmitting device upload, and carry out battery status using floor data and environmental data and calculate with energy management calculating, battery operation state is obtained, and rating information prompting is carried out according to battery operation state.Due to being calculated using cloud platform, therefore its floor data and environmental data that can calculate the lithium battery in numerous lithium battery management systems simultaneously, it is more efficient.
Description
Technical field
The present invention relates to energy storage devices, more particularly to a kind of lithium battery management system applied to communication base station.
Background technique
China has become global maximum new-energy automobile market, and New Energy Sources In China automobile sales volume surpasses 700,000 within 2017,
Lithium battery is scrapped quantity and is sharply increased.When the power battery capacity attenuation of electric car is to 80% or less, suitable for application in
It on electric car, recycles at this time, causes to waste, while facing safety problem and environmental issue.National multi-section committee joint is put into effect
In " new-energy automobile power accumulator recycles management Tentative Measures ", propose that the utilization of waste and old power battery should follow first ladder
Regenerated principle after secondary.
Communication base station backup power supply safeguard way in alternating current power loss generallys use the energy storage of battery group and movement or fixation
The safeguard way of generating set emergency starting power generation.Battery is the important component of combined power supply system, is to ensure communication
Equipment pays no attention to the core equipment of cut-off electricity.Currently, most of the country base station backup power supply uses lead-acid accumulator.
The utilization of echelon power battery refers to the secondary use of retired ferric phosphate lithium cell on electric car.Theoretically
It says, ferric phosphate lithium cell compares the advantage for having it with lead-acid battery during use, its cycle life is significantly larger than plumbic acid
Battery.Lead-acid battery cycle-index used in the communications industry often at 500 times or so, put by ferric phosphate lithium cell circulation at present
Electric number is up to 2000 levels, so cycle life number is higher than lead-acid battery.The corresponding energy of lithium iron battery is close
Degree ratio and be large current discharge characteristic there are also environmentally protective aspects also superior to lead-acid battery, comparatively its specific energy,
These indexs of energy density per unit volume, power etc. are higher than lead-acid battery, and also just creating it can work as in the environment of narrow space
Middle Quick distributor because small in size while weight also it is relatively light very much.Simultaneously because using in temperature it compare plumbic acid
Battery wants wider, so the scene restricted gender used is smaller.
Practical application is on base station, and echelon lithium battery or problem are the more.The BMS of echelon lithium battery currently used for base station
(battery management system), only to lithium battery overcharge or the protection of over-discharge, only charge or discharge voltage slightly transfinites, letter
Single rough power-off protection, but because former power-supply device corresponding problem, the problems such as practical service environment is complicated, cause to be permitted at this stage
Mostly using the communication base station of echelon lithium battery, requirement is not achieved in its backup power supply.In addition, from example, Liuzhou city, Guangxi province
One backup power supply of the Luzhai County town Zhai Sha uses echelon lithium battery base station, stands in August, 2018 from, until discharging 21 in October, 2018 altogether
Secondary, battery capacity decays to 59.2Ah from 100Ah, shows that the echelon lithium battery group of this base station does not obtain managing and tieing up well
Shield decays too fast, and the service life is too short.
Summary of the invention
It is an object of the present invention to provide a kind of lithium battery management for being safely and efficiently applied to mobile communication base station
System.
Particularly, the present invention provides a kind of lithium battery management systems applied to communication base station, comprising:
Lithium battery management system is connect with lithium battery, for acquiring the floor data and environmental data of lithium battery, and
It is stored；
Radio transmitting device, for being wirelessly transferred the floor data and environmental data of lithium battery management system storage；
Battery cloud platform for obtaining the floor data and environmental data of radio transmitting device upload, and utilizes operating condition
Data and environmental data carry out battery status calculating and energy management calculates, and obtain battery operation state, and transport according to battery
Row state carries out rating information prompting.
Further, lithium battery management system includes:
Data acquisition device, including high input voltage multiplexer and low pressure input multiplexer, high input voltage it is more
Path multiplexer is for measuring Series Sheet battery unit, and low pressure input multiplexer provides single-ended ADC input, in combination with external
The temperature of thermosensitive resistance measurement battery；
Micro treatmenting device is connect with data acquisition device, for storing data the data of acquisition device acquisition.
Further, radio transmitting device includes:
Transparent transmission module is communicated by serial ports mode micro treatmenting device, and flat to battery cloud by mobile communications network
Platform sends floor data and environmental data.
Further, battery cloud platform includes:
Battery temperature computing module, for calculating the temperature data of lithium battery；
State-of-charge computing module, for calculating the charged data of lithium battery；
Health status computing module, for calculating the health data of lithium battery；
Functional status computing module, for calculating the performance data of lithium battery；
Energy state computing module, for calculating the energy datum of lithium battery.
Further, battery temperature computing module is used to calculate the temperature data under the threedimensional model of lithium battery.
Further, temperature data is estimated by the heat production power and surface temperature of lithium battery.
Further, battery cloud platform sets the first running boundary and the second operation of battery according to battery operation state
Boundary, it includes level-one alarm and secondary alarm that rating information, which is reminded,；
When the operating status of battery crosses the first running boundary and do not cross the second running boundary, battery cloud platform is generated
Level-one alarm, when the operating status of battery crosses the second running boundary, battery cloud platform generates secondary alarm.
Further, battery cloud platform includes timer, and timer starts timing after generating secondary alarm, works as timer
Timing time be greater than preset time threshold when, battery cloud platform to lithium battery management system transmit protection signal so that
Lithium battery at least runs power failure movement.
Further, lithium battery management system includes intelligent recharge and discharge management module, and intelligent recharge and discharge management module is in lithium
The state-of-charge of battery is charged when being lower than the first preset value with the first power, and it is pre- to be higher than first in the state-of-charge of lithium battery
If being charged when value with the second power, wherein the first power is higher than the second power.
Further, lithium battery management system further includes active equalization repair module, and active equalization repair module is configured to
Each single battery of lithium battery is set to be simultaneously filled with electricity or while discharge electricity；Lithium battery management system further includes lithium battery
Environment temperature control module.When environment temperature is lower than lithium battery normal use temperature, lithium battery management system automatically adjusts lithium
Cell operating conditions temperature.Lithium battery periphery is furnished with heating film group, and system controls the work of heating module by temperature collection.
Further, during the charging process, is there is any monomer in the voltage of lithium battery management system detection single battery
When the voltage of battery is more than preset overcharged voltage limit value, charge circuit is cut off, and prompt single battery to overcharge, and start master
Dynamic equilibrium repair module, carries out balanced discharge to lithium battery；
During discharge, the voltage of lithium battery management system detection single battery, in the electricity for any single battery occur
It forces down when preset over-discharge voltage limits, cuts off discharge loop, and prompt single battery over-discharge, and start active equalization and repair
Multiple module carries out equalizaing charge to lithium battery.
Lithium battery management system detects the voltage and environment temperature of each single lithium battery simultaneously during the charging process, when a certain
The voltage of single lithium battery, which is more than or equal to lithium battery, allows ceiling voltage (overcharged voltage limit value), and lithium battery management system is cut automatically
Disconnected charge circuit, prompts warning message by cloud platform: single over-charging of battery alarm, so that generation single battery be avoided to overcharge.Lithium
Battery management system starts active equalization repair module automatically, so that the monomer battery voltage that will be overcharged restores to close to averagely
Value.
Lithium battery management system detects each single lithium battery voltage simultaneously in electric discharge, close when there is a certain single battery
Lithium battery minimum voltage (over-discharge voltage limits), even if the total voltage of lithium battery is also to discharge cut-off voltage, also cutting electric discharge
Circuit prompts warning message by cloud platform: single battery over-discharge alarm.Lithium battery management system starts active equalization reparation automatically
Module carries out supplement electricity to single lithium battery, so that restoring the monomer battery voltage of over-discharge to close to lithium battery average value.
This avoid batteries to there is the phenomenon that single over-charging of battery or overdischarge during charging and discharging, extends whole group battery
Service life.
The also controllable base station direct current cabinet power supply of lithium battery management system, discharges to lithium battery group using actual loading,
Cloud platform accurately calculates battery capacity by integral operation using collected voltage and current information, is base station O&M
Personnel provide reliable battery status information.
In lithium battery management system in the present invention, battery cloud platform obtains the lithium battery of radio transmitting device wireless transmission
Floor data and environmental data after, the state and energy management of battery are calculated, and obtain battery operation state.Electricity
Pond cloud platform carries out rating information prompting according to the operating status of battery, timely when guaranteeing that battery is run under abnormal condition
It is reminded.Due to being calculated using cloud platform, therefore it can calculate the lithium battery in numerous lithium battery management systems simultaneously
Floor data and environmental data, it is more efficient.
According to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will be brighter
The above and other objects, advantages and features of the present invention.
Detailed description of the invention
Some specific embodiments of the present invention is described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter.
Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.In attached drawing:
Fig. 1 is the structure framework of the lithium battery management system according to an embodiment of the invention applied to communication base station
Figure；
Fig. 2 is the structure framework of the lithium battery management system in accordance with another embodiment of the present invention applied to communication base station
Figure；
Fig. 3 is the principle signal of the lithium battery management system according to an embodiment of the invention applied to communication base station
Figure.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, and
It is not used in restriction the application.
It as shown in Figure 1 to Figure 3, is preferred embodiments of the present invention.
The present invention provides a kind of lithium battery management systems 100 applied to communication base station comprising lithium battery management system
System 100, radio transmitting device 200 and battery cloud platform 300.Lithium battery management system 100 is electrically connected with lithium battery 150, is used
In the floor data and environmental data that acquire lithium battery 150 and stored.Radio transmitting device 200 is for being wirelessly transferred lithium
The floor data and environmental data that battery management system 100 stores.Battery cloud platform 300 is for obtaining radio transmitting device
200 floor datas and environmental data uploaded, and battery status calculating and energy are carried out using floor data and environmental data
Buret reason calculates, and battery operation state is obtained by calculation in battery cloud platform 300, and carries out classification letter according to battery operation state
Breath is reminded.
I.e. this system acquires the work condition environment data and working environment number that echelon lithium battery is used in communication base station in real time
According to being uploaded to wisdom battery cloud platform 300 by Internet of Things network interface card, wisdom battery cloud platform 300 is by cloud computing technology to echelon
Lithium battery carries out big data analysis and diagnosis, carries out classifying alarm to battery failures, can control communication base station echelon lithium electricity in real time
Safety coefficient, health degree and its continuation of the journey supportability in pond etc..Battery management module mainly to the end voltage and temperature of battery, fill
Discharge current and assembled battery total voltage carry out data acquisition, and storage is stored to data after collected data are filtered
In device RAM, the usage history archives of every piece of battery are established.By serial communication interface by status information (electric current, electricity of battery
Pressure, temperature) it is transferred to 4G communication module, the 4G communication module equipped with SIM card is risen using data penetration transmission Model Establishment and cell tube
The data connection of module is managed, and passes through the data-transformation facility of wireless transmission and receive capabilities realization and cloud server, building
Play the data acquisition and wireless transmission front network module of platform of internet of things construction.
This system wisdom battery cloud platform 300 can use the realization of the information technologies such as two dimensional code, App, cloud computing, big data
Battery interconnection, constructs the battery network world.Using key technologies such as remaining battery life predictions, creation battery life cycle is bent
Line realizes the operating mode of prediction type, fining, customized type.
Lithium battery management system 100 includes data acquisition device 110, and this system uses two AD7280A power management cores
Piece, with the connection of chrysanthemum chain pattern, cooperation by the metal-oxide-semiconductor BZT52H peripheral circuit formed and ADUM1401 and ADUM5401 magnetism every
From circuit, data acquisition is carried out to the end voltage and temperature, charging and discharging currents and assembled battery total voltage of battery.AD7280A is one
The complete data collection system of money, a built-in high input voltage multiplexer, a low pressure input multiplexer, one 12
Position high-speed ADC and for register in the piece of channel timing control.For measuring Series Sheet battery unit, LVMUX is mentioned HVMUX
It is inputted for single-ended ADC, in combination with the temperature of external thermosensitive resistance measurement battery；In addition also provide 2.5V accurate reference voltage and
Voltage regulator in piece.
This system further includes micro treatmenting device, and micro treatmenting device 120 is connect with data acquisition device 110, for storing number
The data acquired according to acquisition device 110.Specifically, this system data store: using STM32F1 series A RM microcontroller, this is
Column chip is that (ST) company, STMicw Electronics produces, and kernel is Cortex-M3.The size of Flash in the family chip press piece
It can be divided into three categories: low capacity (16K and 32K), middle capacity (64K and 128K), large capacity (256K, 384K and 512K), chip
Integrated timer, CAN, ADC, SPI, I2C, USB, UART, etc. multiple functions.
This system uses 7S4-4G transparent transmission module 210, periphery design power supply circuit and driving circuit, passes through RS485/232
Serial ports mode is communicated with STM32F1 series A RM microcontroller, and the data parameters such as the voltage, electric current, temperature of battery are passed through
4G network is sent to remote server.
In a kind of implementation, battery cloud platform 300 may include battery temperature computing module 310, state-of-charge computing module
320, health status computing module 330, functional status computing module 340, energy state computing module 350 and safety calculate mould
Block.Each module is by being calculated the temperature parameter, state-of-charge (SOC), depth of discharge (DOD), health status of battery
(SOH), the data such as functional status (SOF), energy state (SOE), failure and safe condition (SOS).
Battery temperature computing module 310 is used to calculate the temperature of battery, is the basis that other modules are calculated.Battery temperature
Degree computing module 310 calculates the temperature of lithium battery 150 by the way of estimation.The estimation of SOC is influenced by SOH, SOF be by
What SOC, SOH, SOS and battery core temperature determined jointly, SOE is then related with SOC, SOH, battery temperature, the following operating condition.Temperature pair
Battery performance is affected, and can only generally measure the temperature of battery surface at present, and the temperature inside battery core is needed using hot-die
Type is estimated.Common cell thermal model includes zero-dimensional model (lumped mass model), one-dimensional or even threedimensional model.Lump
Quality model can substantially calculate the temperature change in battery charge and discharge process, and estimated accuracy is limited.But lumped mass model meter
It is small, therefore can be used for real-time Temperature estimate.One-dimensional, two-dimentional and threedimensional model is needed using numerical method to heat transfer differential
Equation is solved, and is carried out grid dividing to battery, is calculated the thermo parameters method of battery, while also needing to consider battery structure to biography
The influence of heat (structure includes kernel, shell, electrolyte layer etc.).Battery temperature point in one direction is only considered in one-dimensional model
Cloth thinks that battery temperature is uniform in other directions.Two dimensional model considers battery in the Temperature Distribution of both direction, to cylindrical electricity
For pond, Temperature Distribution axially and radially can reflect the temperature field of inside battery.Two dimensional model is generally used for thin slice electricity
The temperature analysis in pond.Threedimensional model can reflect the temperature field inside rectangular cell completely, and simulation accuracy is higher, thus obtain compared with
It applies more.But threedimensional model is computationally intensive, can not be applied to real time temperature and estimate, be only used for carrying out temperature in the lab
Field emulation.In order to allow the calculated result of threedimensional model to apply in real time, the present embodiment can utilize the Temperature calculating knot of threedimensional model
The relationship of battery heat production power and internal-external temperature difference is fitted to transmission function, is estimated by heat production power and battery surface temperature by fruit
Count the temperature of inside battery.
Algorithm built in state-of-charge module is broadly divided into two major classes, and one kind is single algorithm, and in addition a kind of is a variety of
The blending algorithm of single SOC algorithm.Single SOC algorithm is included: current integration method, open circuit voltage method, is estimated based on battery model
The open circuit voltage method of meter, other SOC estimation methods based on battery performance etc..Blending algorithm includes simple amendment, weighting, card
Kalman Filtering (or Extended Kalman filter), sliding moding structure method etc..Battery pack is made of in series and parallel multiple batteries, due to electricity
There are inconsistencies between the monomer of pond, in groups after battery pack SOC estimation it is increasingly complex.It is connected in parallel if being used between battery cell,
Since this connection type has self-balancing, the SOC of battery module is equivalent to monomer SOC.If between battery cell
Using series connection, formula is needed to calculate.
Health status computing module 330 is used to calculate the health status (SOH) of lithium battery 150, and health status refers to battery
The departure degree of current performance and normal design index.Cell degradation is the normal performance degradation of battery, cannot be represented completely
Its health status.And the definition of majority SOH at present is only limitted to the scope of cell degradation, is not related to the health status of battery really
(such as health, inferior health, slight problem, serious problems), thus current algorithm should be known as SOL (State of Life,
Service life state).Durability is current industry research hotspot, and the major parameter for characterizing battery life is capacity and internal resistance.
The performance degradation active volume of energy-type cells decays to characterize, power type battery performance degradation useable resistance change
To characterize.Lithium ion battery is " rocking chair type " battery, and the active material of positive and negative anodes is considered as accommodating two buckets of lithium ion,
Lithium ion is equivalent to the water in bucket.The performance degradation of battery can be understood as " water " and tail off (i.e. active lithium-ion loss), or
" bucket " becomes smaller (positive or negative pole active material tails off).The main reason for causing active lithium-ion to lose, has: electrode and electrolyte
Form extra passivating film.Since charge-discharge battery dilation fatigue causes electrode to be cracked, electrode is caused to be formed with electrolyte
New SEI film (solid electrolyte interface film), and consume lithium ion.Analysis lithium caused by improper charging reacts consumption lithium with electrolyte
Ion.
The main reason for leading to active material loss includes: manganese, iron or the dissolution of nickel plasma in material；Active material
Abscission；Active material lattice collapses.SOH estimation can be using the durability empirical model estimation technique and based on battery model parameter
Discrimination method.Under conditions of equilibrium, the capacity attenuation of battery pack will be much larger than the capacity attenuation of monomer, the appearance of battery pack
Measure the cathode between the capacitance loss and monomer that attenuation is remaining charge capacity minimum monomer active lithium-ion lose difference it
With.The capacity of battery pack in order to obtain needs to obtain the capacity of monomer first.
Functional status computing module 340 is used to calculate the functional status (SOF) of lithium battery 150.Estimate that battery SOF can letter
Singly it is considered the maximum available power in estimation battery.In general, the maximum available power of battery by electric current, voltage,
The limitation of the parameters such as SOC, temperature, it is also related with the degree of aging of battery, malfunction etc..Common SOF estimation method can be with
It is divided into the method based on battery MAP chart and the dynamic approach two major classes based on battery model.
Energy state computing module 350 is used to calculate the dump energy (RE) or energy state (SOE) of lithium battery 150.Electricity
When the dump energy RE in pond is referred to a certain operating condition, from current time up in battery discharge procedures of turn-off, battery is accumulative to be mentioned
The energy of confession.The area integral on coordinate system that can be made of battery terminal voltage and corresponding accumulated discharge capacity indicates.
Since the different corresponding end voltage responsives of charge status is different, the dump energy that battery is provided in synchronization)
Also not identical.The energy loss of battery is different under difference electric discharge operating condition.Therefore the electricity under a certain specific power requirement is only predicted
Cell voltage response process could obtain accurate RE predicted value.The characteristics of due to lithium ion battery, voltage output is by very much
The influence of variable, such as current SOC, temperature, attenuation degree SOH, therefore except traditional SOC estimates model during energy predicting
Outside, it is also necessary to a special voltage-prediction model.
Safe condition computing module is used to calculate the safe condition (SOS) of lithium battery 150, with the failure to lithium battery 150
It is diagnosed.Fault diagnosis is one of the necessary technology for guaranteeing cell safety.Battery management system must have certain battery
Diagnostic function, including unhealthy battery early alert and cell degradation information monitoring.Safe condition estimation belongs to battery failures and examines
One of disconnected vital task, this system can provide the fault level of battery according to the safe condition of battery.Fault diagnosis technology
A new interdisciplinary is had evolved at present.Fault diagnosis technology is based on object working principle, integrated computer network, number
According to technologies such as library, control theory, artificial intelligence, application in many fields be have been relatively mature.The failure of lithium ion battery
Diagnostic techniques still belongs to developing stage, research depend on parameter Estimation, state estimation and based on the methods of experience (with it is above-mentioned
SOH research is similar).The system of the embodiment of the present invention realizes battery inline diagnosis.By the variation for observing its charging and discharging curve
To recognize battery pack failure that may be present.Echelon lithium battery group is made of in series and parallel several battery cells, is existed between individual
Certain difference, i.e. inconsistency.Generally, inconsistency obeys the rule of statistical analysis, this is the fault diagnosis of battery pack
Provide a kind of theoretical foundation.
In a kind of embodiment, battery cloud platform 300 can be set when carrying out rating information prompting according to battery operation state
Determine the first running boundary and the second running boundary of battery, and provides level-one alarm and second level according to the operating status of battery
Alarm.When the operating status of battery crosses the first running boundary and do not cross the second running boundary, battery cloud platform 300 is generated
Level-one alarm, when the operating status of battery crosses the second running boundary, battery cloud platform 300 generates secondary alarm.Further
Ground, battery cloud platform 300 can also include timer, and timer starts timing after generating secondary alarm, when the meter of timer
When the time be greater than preset time threshold when, battery cloud platform 300 to lithium battery management system 100 transmit protection signal so that
It obtains lithium battery and at least runs power failure movement.I.e. battery cloud platform 300 is to data pair such as the voltages, electric current and temperature of the battery received
Over-charging of battery, over-discharge, overcurrent, overheat several respects are protected.When battery status crosses " Reasonable area " boundary, level-one report is provided
It is alert, and time of fire alarming control, within certain length, at this time it is meant that situation is not extremely serious, backup power supply, which is appointed, to power.
After battery operating regime crosses " critical zone ", secondary alarm is provided, shows serious conditions, when serious alarm reaches certain
After time, control action is protected, stops power supply.
The accident for now resulting in the most serious of cell safety is the thermal runaway of battery, using thermal runaway as the safe condition of core
Estimation is most urgent demand.The main inducing of thermal runaway is caused to have overheat, overcharge, self-initiating internal short-circuit etc..Charging analysis lithium
It is the main cause for influencing battery life, high magnification, low temperature charging easily lead to the cathode analysis lithium of battery, and influence service life and the peace of battery
Quan Xing.Therefore, it is necessary to the quick charges for battery to further investigate.The decaying of battery occurs mainly in higher SOC.Pass through
Thermal runaway behavior and pulse charge method research.
In order to improve the service life and security performance of battery, the lithium battery management system 100 in the present embodiment includes
Intelligent recharge and discharge management module 130, intelligent recharge and discharge management module 130 are default lower than first in the state-of-charge of lithium battery 150
It is charged when value with the first power, is filled when the state-of-charge of lithium battery 150 is higher than the first preset value with the second power
Electricity, wherein the first power is higher than the second power.Fast charge in short-term is carried out in the lower SOC of lithium battery 150, is then transferred to again often
Advise the novel fast charge mode of charge mode.Addition interval is shelved during the charging process and pulsed discharge, guarantee battery are quick
It is smaller to the service life of battery while charging.Guarantee that battery cathode does not occur in the case of analysing lithium, as far as possible increase charging current,
Shorten the charging time.Depending on the site environment, pass through the preservation and the control in charging time of adjusting charging voltage and battery allowance 5%
System carries out temperature-compensating or protection in time.Using heat management according to temperature distribution information in battery pack and charge-discharge power demand, determine
Active heating/heat dissipation intensity gives full play to the performance of battery so that battery is worked as far as possible in most suitable temperature.Intelligence
Management of charging and discharging module 130 is the core of lithium battery management system 100, carries out intelligent management to the charge and discharge of echelon lithium battery,
Solve the problems, such as " thermal runaway " of battery, guarantee echelon lithium battery using safe, extend the service life of battery, while saving electricity
Energy.
Former echelon lithium battery management system 100 overcharge and Cross prevention, the highest battery core of electricity is full of stopping when charging
It only charges, other battery cores can not be then full of；The minimum battery core of electricity, which discharges, when electric discharge stops electric discharge, other battery cores can not discharge
Electricity；" empty electricity " (electricity not being available) of lithium battery group gradually increases, and the actually active electricity of lithium battery group is greatly reduced, echelon
The cruising ability of lithium battery group continues to decline.If equilibrium cannot be carried out in time, the low battery core depth of discharge of electricity is deeper, the service life
Easier shortening, or even there is the case where Individual cells damage.Cause to occur between each battery core of battery pack after difference can not and
Shi Xiufu.
Lithium battery management system 100 in the present embodiment further includes active equalization repair module 140, and single channel repairs electric current
0.3A~5A, balanced target voltage can flexible setting, multiple channels can arbitrarily be superimposed charging repair, support to ultralow piezoelectricity
Core or even 0V battery core carry out activation reparation.It can allow stack battery maximum capacity, be simultaneously filled with while discharging, keep battery
Consistency, the effective service life for extending echelon lithium battery, solves echelon lithium battery wooden barrel short -board effect.
During the charging process, lithium battery management system 100 detects the voltage of single battery, any single battery is occurring
When voltage is more than preset overcharged voltage limit value, charge circuit is cut off, and prompt single battery to overcharge, and start active equalization
Repair module 140 carries out balanced discharge to lithium battery；
During discharge, lithium battery management system 100 detects the voltage of single battery, any single battery is occurring
When voltage is lower than preset over-discharge voltage limits, discharge loop is cut off, and prompt single battery over-discharge, and start active equalization
Repair module 140 carries out equalizaing charge to lithium battery.
Lithium battery management system 100 detects the voltage and environment temperature of each single lithium battery simultaneously during the charging process, when
The voltage of a certain single lithium battery, which is more than or equal to lithium battery, allows ceiling voltage (overcharged voltage limit value), and lithium battery management system is certainly
Dynamic cutting charge circuit prompts warning message: single over-charging of battery alarm by cloud platform 300, to avoid that single battery occurs
It overcharges.Lithium battery management system 100 starts active equalization repair module 140 automatically, so that the monomer battery voltage that will be overcharged
Restore to close to average value.
Lithium battery management system 100 detects each single lithium battery voltage simultaneously in electric discharge, when a certain single battery of appearance
Close to lithium battery minimum voltage (over-discharge voltage limits), even if the total voltage of lithium battery is also also to cut off to discharge cut-off voltage
Discharge loop prompts warning message: single battery over-discharge alarm by cloud platform 300.Lithium battery management system 100 automatically lead by starting
Dynamic equilibrium repair module 140 carries out supplement electricity to single lithium battery, so that restoring the monomer battery voltage of over-discharge to close
Lithium battery average value.This avoid batteries to there is the phenomenon that single over-charging of battery or overdischarge during charging and discharging,
Extend the service life of whole group battery.
The also controllable base station direct current cabinet power supply of lithium battery management system 100, puts lithium battery group using actual loading
Electricity, cloud platform 300 accurately calculate battery capacity by integral operation using collected voltage and current information, are base
Operation maintenance personnel of standing provides reliable battery status information.
Lithium battery management system 100 in the present embodiment further includes battery operating condition detection unit 160, and the detection of battery operating condition is single
Member 160 is used for the operating status of real-time detection lithium battery 150.As shown in figure 3, lithium battery 150 passes through active equalization repair module
140 and intelligent recharge and discharge management module 130 adjusted in real time, and detected, adjusted by battery operating condition detection unit 160
Data and detection data radio to battery cloud platform 300 by radio transmitting device 200, and battery cloud platform 300 is according to receipts
To data carry out the operating status that more accurate battery is calculated, and then rating information prompting is carried out to lithium battery 150.
In a kind of embodiment, lithium battery management system 100 can also include environment temperature control module 170, locating for lithium battery 150
When environment temperature is lower than lithium battery normal use temperature, lithium battery management system 100 automatically adjusts the working environment of lithium battery 150
Temperature.150 periphery of lithium battery is furnished with heating film group, and system controls the work of heating module by temperature collection.
So far, although those skilled in the art will appreciate that present invention has been shown and described in detail herein multiple shows
Example property embodiment still without departing from the spirit and scope of the present invention, still can according to the present disclosure directly
Determine or deduce out many other variations or modifications consistent with the principles of the invention.Therefore, the scope of the present invention is understood that and recognizes
It is set to and covers all such other variations or modifications.
Claims (10)
1. a kind of lithium battery management system applied to communication base station characterized by comprising
Lithium battery management system is connect with the lithium battery, for acquiring the floor data and environment number of the lithium battery
According to, and stored；
Radio transmitting device, for being wirelessly transferred the floor data and the environment of the lithium battery management system storage
Data；
Battery cloud platform, the floor data and the environmental data uploaded for obtaining the radio transmitting device, and
Battery status calculating is carried out using the floor data and the environmental data and energy management calculates, and obtains battery operation shape
State, and rating information prompting is carried out according to the battery operation state.
2. lithium battery management system according to claim 1, which is characterized in that the lithium battery management system includes:
Data acquisition device, including high input voltage multiplexer and low pressure input multiplexer, the high input voltage are more
For path multiplexer for measuring Series Sheet battery unit, the low pressure input multiplexer provides single-ended ADC input, combinable
The temperature of external thermosensitive resistance measurement battery；
Micro treatmenting device is connect with the data acquisition device, for storing the data of the data acquisition device acquisition.
3. lithium battery management system according to claim 1, which is characterized in that the radio transmitting device includes:
Transparent transmission module is communicated by serial ports mode with micro treatmenting device, and passes through mobile communications network to the battery cloud
Platform sends the floor data and the environmental data.
4. lithium battery management system according to claim 1, which is characterized in that the battery cloud platform includes:
Battery temperature computing module, for calculating the temperature data of the lithium battery；
State-of-charge computing module, for calculating the charged data of the lithium battery；
Health status computing module, for calculating the health data of the lithium battery；
Functional status computing module, for calculating the performance data of the lithium battery；
Energy state computing module, for calculating the energy datum of the lithium battery.
5. lithium battery management system according to claim 4, which is characterized in that
The battery temperature computing module is used to calculate the temperature data under the threedimensional model of the lithium battery.
6. lithium battery management system according to claim 5, which is characterized in that
The temperature data is estimated by the heat production power and surface temperature of the lithium battery.
7. lithium battery management system according to claim 1, which is characterized in that
The battery cloud platform sets the first running boundary and the second operation of the battery according to the battery operation state
Boundary, it includes level-one alarm and secondary alarm that the rating information, which is reminded,；
The electricity when the operating status of the battery crosses first running boundary and do not cross second running boundary
Pond cloud platform generates the level-one alarm, the battery cloud when the operating status of the battery crosses second running boundary
Platform generates the secondary alarm.
8. lithium battery management system according to claim 7, which is characterized in that
The battery cloud platform includes timer, and the timer starts timing after generating the secondary alarm, when the meter
When device timing time be greater than preset time threshold when, the battery cloud platform to the lithium battery management system transmit protect
Signal, so that the lithium battery at least runs power failure movement.
9. lithium battery management system according to claim 1, which is characterized in that
The lithium battery management system includes intelligent recharge and discharge management module, and the intelligent recharge and discharge management module is in the lithium electricity
The state-of-charge in pond is charged when being lower than the first preset value with the first power, is higher than in the state-of-charge of the lithium battery described
It is charged when the first preset value with the second power, wherein first power is higher than second power.
10. lithium battery management system according to claim 1, which is characterized in that the lithium battery management system further include:
Active equalization repair module, the active equalization repair module are configured to make each single battery of the lithium battery simultaneously
It is at full charge or discharge electricity simultaneously；
Environment temperature control module, when the environment temperature of the lithium battery is lower than lithium battery normal use temperature, the lithium electricity
Pond management system adjusts the operating ambient temperature of the lithium battery；And
During the charging process, the lithium battery management system detects the voltage of the single battery, any monomer is occurring
When the voltage of battery is greater than or equal to preset overcharged voltage limit value, charge circuit is cut off, and single battery is prompted to overcharge, and
Start the active equalization repair module, balanced discharge is carried out to the lithium battery；
During discharge, the lithium battery management system detects the voltage of the single battery, any monomer is occurring
When the voltage of battery is lower than preset over-discharge voltage limits, discharge loop is cut off, and prompt single battery over-discharge, and start institute
Active equalization repair module is stated, equalizaing charge is carried out to the lithium battery.
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| CN111525655A (en) * | 2020-06-02 | 2020-08-11 | 美登思电气（上海）有限公司 | Accurate power supply controller and accurate power supply system for communication base station |
| CN111934332A (en) * | 2020-07-01 | 2020-11-13 | 浙江华云信息科技有限公司 | Energy storage power station system based on cloud edge cooperation |
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