CN106364322B - A kind of cell safety system for managing state and method - Google Patents
A kind of cell safety system for managing state and method Download PDFInfo
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- CN106364322B CN106364322B CN201610891196.7A CN201610891196A CN106364322B CN 106364322 B CN106364322 B CN 106364322B CN 201610891196 A CN201610891196 A CN 201610891196A CN 106364322 B CN106364322 B CN 106364322B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
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- Secondary Cells (AREA)
Abstract
The invention discloses a kind of cell safety system for managing state and methods.The system includes battery system degree of safety display device, signal pickup assembly, signal processing apparatus, communication interface arrangement and peripheral equipment, and battery system degree of safety display device is used to show Security analysis result, the degree of safety of battery module；Signal pickup assembly is used to acquire the functional parameter of battery module；Signal processing apparatus is used to perform mathematical calculations to the functional parameter of the battery or logical operation, obtains the Security analysis result and degree of safety of the battery；For communication interface arrangement for connecting peripheral equipment, the peripheral equipment includes finger-impu system, battery system degree of safety display device, control device.The cell safety state that cell safety system for managing state provided by the invention and method can be such that operator is immediately seen on display and control unit can effectively avoid the generation of cell safety accident moreover, the safe condition is the degree of safety parameter of a quantization.
Description
Technical field
The present invention relates to field of batteries, more particularly to a kind of cell safety system for managing state and method.
Background technique
Currently, battery applications in various fields is more and more extensive, almost include we life, production, scientific research institute
There is field.Especially in the recent period, domestic and international new-energy automobile is quickly grown, and the demand of battery is increasing, to the performance of battery
It is required that also higher and higher.The especially safety of battery is the most important performance of battery system.Just because of cell safety shape
The missing of state management causes battery catches fire and explosion accident to take place frequently.Only domestic electric car field in this year, has occurred that
More than ten play the combustion explosion accident of lithium ion battery of electric automobile, have seriously affected the development of electric car, have caused electricity
The extensive concern in electrical automobile field.
Under the operating condition of electric car actual motion, the working environment of battery is extremely complex, the unexpected increase of electric current, voltage
Suddenly change, temperature caused by the failure of radiator increases suddenly, can all cause the safety accident of battery.
For the other field of battery applications, safety is similarly important.Such as accumulation power supply, startup power supply, backup power source
Field.For land, navigation, Aeronautics and Astronautics field, train, automobile, above water craft and the underwater latent device that navigates, aircraft and other fly
All there is battery and combustion explosion peace occur in row device, energy-accumulating power station, electric system, communication station and all occasions using battery
The hidden danger of full accident.
The combustion explosion safety accident of battery be as caused by many reasons, and have certain probability sexual factor, and
Existing technology should on the safety hazards to battery it is hidden there is no more in-depth study, the safety that battery uses is carried out
Trouble is not well solved always.
Summary of the invention
The object of the present invention is to provide a kind of cell safety system for managing state and methods, can be to the safe condition of battery
The description and display for carrying out quantification, allow driver or other operators to grasp cell safety situation in time, quickly take suitable
Work as measure, effectively prevent safety accident, ensures the safe operation of power battery.
To achieve the above object, the present invention provides following schemes:
A kind of cell safety system for managing state, the system comprises:
Battery system degree of safety display device, the battery system degree of safety display device are installed on the operation of operator
On panel, the battery system degree of safety display device is used to show Security analysis result, the degree of safety of the battery module,
Operator can be real-time, fast, intuitively, easily sees the degree of safety of battery system；
Signal pickup assembly, the signal pickup assembly are used to acquire the functional parameter of battery module, the functionality
Parameter includes voltage, electric current, cell internal pressure, battery temperature, state-of-charge, environment temperature, ambient pressure and electric car
Data, the electric car data include environmental vibration, motor speed, speed of operation and automobile position；
Signal processing apparatus, the signal processing apparatus are used to carry out mathematics fortune to the functional parameter of the battery module
Calculation or logical operation, obtain the Security analysis result and degree of safety of the battery module；
Communication interface arrangement, for the communication interface arrangement for connecting peripheral equipment, the peripheral equipment includes that keyboard is defeated
Enter device, control device, the finger-impu system is used to manually preset safety threshold according to different security requirements
Required parameter when value, alarm parameters and signal processing；The control device is for issuing alarm command and control instruction；
The communication interface arrangement is connected with the signal processing apparatus, at the signal pickup assembly and the signal
Reason device is connected, and the battery system degree of safety display device passes through the communication interface arrangement and the signal processing apparatus
It is connected.
Optionally, the battery module be lead-acid battery, ickel-cadmium cell, nickel-metal hydride battery, lithium ion battery, fuel cell,
Solar battery, smee cell or lithium-sulfur cell.
Optionally, the signal processing device is set to programmable, intelligent and calculates equipment, and the programmable, intelligent calculates equipment packet
Include DSP digital signal processor, digital computer, Industrial Control Computer, PC application and microcontroller embedded system
System.
Optionally, the communication modes of the communication interface arrangement include Ethernet, CAN bus, 1553B bus, RS232 total
Line, 485 buses, bluetooth or wifi.
Optionally, it is aobvious can be shown or be simulated instrument using digital instrument for the battery system degree of safety display device
Show.
Optionally, the battery system degree of safety display device can be shown using LCD display, UFB display, STN
Device, OLED display, TFT display, light-emitting diode display perhaps CRT monitor or electric vehicle instrument disk, mobile phone, MP4,
MP5、ipad。
To achieve the above object, the present invention also provides a kind of electricity applied in above-mentioned cell safety system for managing state
Pond safe condition management method, comprising:
The functional parameter value of acquisition battery module in real time, the functional parameter value includes in the voltage, electric current, battery of battery
Portion's pressure, battery temperature, environment temperature, ambient pressure, environmental vibration and state-of-charge；
Analytical calculation is carried out to the functional parameter value of the battery module, obtains the safety analysis result and electricity of the battery
The degree of safety of pond module；
Show the safety analysis result of the battery module and the degree of safety of battery；
Whether the degree of safety for judging the battery module has been more than secure threshold, and the secure threshold is by the battery module
Physical characteristic determine, or by user setting；
If it is, sounding an alarm instruction.
Optionally, the method also includes:
When the degree of safety of the battery module has been more than secure threshold, control instruction is issued, the control instruction can
The system for being mounted with the battery module is controlled, the generation of safety accident is prevented.
Optionally, the functional parameter value to the battery module carries out analytical calculation, obtains the safety of battery module
Degree, specifically includes:
Mathematical operation or logical relation operation are used to the functional parameter value of the battery module, obtain the battery
Degree of safety, the mathematical operation include add, subtract, multiplication and division, power, evolution, differential, integral, correlation analysis, the logical relation
Operation include logical operation with or it is non-.
Optionally, the functional parameter value to the battery module carries out analytical calculation, obtains the degree of safety of battery, also
It specifically includes:
Using data lookup table, mathematical formulae calculating, logging, empirical data application, theory deduction to the institute
The functional parameter value for stating battery is handled.
The specific embodiment provided according to the present invention, the invention discloses following technical effects: the present invention uses degree of safety
This parameter value quantifies the safe condition of battery, and the value of degree of safety is with specific reference to the series of parameters of battery, using a system
Column count method is calculated, and can characterize the safe coefficient of battery, moreover, system and method provided by the invention can also incite somebody to action
The degree of safety is shown, for work operator reference, avoids the generation of cell safety accident.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structural schematic diagram of cell safety of embodiment of the present invention system for managing state；
Fig. 2 is a kind of schematic diagram of liquid crystal display panel of battery management system of the embodiment of the present invention；
Fig. 3 is the flow diagram of cell safety of embodiment of the present invention method of state management.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of battery peaces that quantitative description and display can be carried out to cell safety state
Total state management system and method.
Scientific circles define the scientific term in relation to quantitative description battery security degree not yet at present, therefore for battery
The evaluation of safe coefficient is very coarse, and all only " combustion explosion occurs regulation for battery, then is judged as electricity for international standard, national standard
Pond is dangerous ", the battery that cannot be described in work is also how far apart from combustion explosion.Therefore, the field of current battery application is outstanding
It is electric car field, is badly in need of a kind of scientific term of rationally description cell safety state, for example, " safe condition degree " or
" degree of safety ".Be badly in need of one kind can according to parameter measurement related with safety, the feasible method of analytical calculation " degree of safety ",
It is badly in need of a kind of device that can show present battery safe condition degree in time, driver or other operators is allowed to grasp electricity in time
Pond security situation, quickly takes appropriate measures, and effectively prevent safety accident, ensures the safe operation of power battery.
Safety analysis and control field of the current battery industry to battery, there are no the specific marks of cell safety state
It is certainly adopted, seriously affect the security application of battery.The present invention proposes the concept of " cell safety degree " in field of batteries innovation,
Analysis on Security Degree of Retaining calculation method is furthermore presented, and is realized in actual battery management system.The invention solves skill
Art problem is to propose a kind of term definition of energy accurate description cell safety state, proposes analysis, calculates, measures and display side
Method is acquired by the data to parameters such as cell voltage, electric current, temperature, obtains the degree of safety of battery.Further apply work
In battery management system, can show the safe condition of battery system in battery work.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Fig. 1 is the structural schematic diagram of cell safety of embodiment of the present invention system for managing state, as shown in Figure 1, cell safety
System for managing state includes battery system degree of safety display device, signal pickup assembly, signal processing apparatus, communication interface dress
It sets, finger-impu system, display and control unit and other peripheral equipments.
Battery system degree of safety display device, the battery system degree of safety display device are installed on the operation of operator
On panel, the battery system degree of safety display device is used to show Security analysis result, the degree of safety of the battery module,
Operator can be real-time, fast, intuitively, easily sees the degree of safety of battery system；
Signal pickup assembly is used to acquire the functional parameter of battery module, the functional parameter include voltage, electric current,
Cell internal pressure, battery temperature, state-of-charge, environment temperature, ambient pressure and electric car data, the electric car number
According to including environmental vibration, motor speed, speed of operation and automobile position；
Signal processing apparatus is used to perform mathematical calculations to the functional parameter of the battery module or logical operation, obtains
The Security analysis result and degree of safety of the battery module；
For communication interface arrangement for connecting peripheral equipment, the peripheral equipment includes finger-impu system, control device, key
Disk input unit is used to manually preset secure threshold, alarm parameters and signal processing according to different security requirements
The parameter of Shi Suoxu；Control device is for issuing alarm command and control instruction；
Communication interface arrangement is connected with the signal processing apparatus, communication interface arrangement also with finger-impu system, aobvious
Show and be connected with control device and other peripheral equipments, signal pickup assembly is connected with the signal processing apparatus.
Signal processing apparatus can be DSP digital signal processor, digital computer, Industrial Control Computer, programmable control
Device PLC and Single Chip MC in Embedded System processed or other programmable, intelligents calculate equipment.
The communication modes of communication interface arrangement can use Ethernet, CAN bus, 1553B bus, RS232 bus, 485
The communication modes such as bus, can also be using communications such as bluetooth or wifi.
Battery system degree of safety display device can be digital instrument and show, is also possible to simulation instrument and shows.It can adopt
It is electronic with LCD display, UFB display, STN display, OLED display, TFT display, light-emitting diode display, CRT monitor
Automobile instrument panel, mobile phone, MP4, MP5, ipad or other can be with the display and control unit of display number, Fig. 2 is that the present invention is real
A kind of schematic diagram of liquid crystal display panel of a battery management system is applied, as shown in Fig. 2, showing the peace of battery on display panel
Whole step, the information such as voltage, electric current, temperature.
Battery module can be lead-acid battery, ickel-cadmium cell, nickel-metal hydride battery, lithium ion battery, fuel cell, solar-electricity
Any one in the batteries such as pond, smee cell, lithium-sulfur cell.It can be for electric car, electric bicycle, electronic work
Tool, land and navigation, aviation, space flight system, and it is used for accumulation power supply, and startup power supply, the battery system of backup power source,
And super capacitor system.In this example by taking electric bus as an example；Using LiFePO4 200Ah/3.2V single battery, use
150 series connection, total voltage 480V.
Battery module is as a kind of electrochemical system, and when battery work, inside battery can all generate different electrochemistry
Reaction, to export different output signals.The output signal representative of the different characteristic different characteristics of battery, thus it can be with
Largely reflect the multifrequency nature parameter of inside battery.Signal pickup assembly is used to obtain the output letter of battery module
Number.Specifically, the acquisition of waveform signal is realized in this system design using the high-speed AD converter AD9220 of ADI company,
AD9220 highest sampling rate is up to 10MHz, using external crystal oscillator 8MHz, realizes that waveform is deposited by sampling inside FPGA
Storage.AD9220 has two kinds of input modes of dc-couple and AC coupled.The voltage signal of battery module, current signal can be acquired
And temperature signal, and it is converted into digital signal output.Certainly it is easily understood that in other embodiments of the present invention, other
Device with Signals collecting function is also possible.
Specifically, in the present embodiment, signal processing apparatus uses digital signal processor.Digital signal processor is by big
Scale or super large-scale integration lamination composition, the processor for completing signal processing tasks.In order to realize quick calculating
Function, digital signal processor use TMS320F2812DSP application system plate, TMS320F2812DSP application system strip
There are digital analog converter and analog-digital converter, therefore is a kind of signal processing apparatus preferably.Certainly, in other implementations of the present invention
In mode, with signal processing function other devices be also can be applied in the present invention, such as: Industrial Control Computer,
The Single Chip MC in Embedded System of programmable controller and other series.
Signal processing apparatus is in order to realize and battery system degree of safety display device, control device and finger-impu system
Communication, the battery management system with cell safety degree display function further comprise communication interface arrangement, this example uses standard
CAN interface module.
Keyboard uses the panel type touch-key of 12 keys, and display uses 7 cun of colour liquid crystal display devices.Certainly, in this hair
In bright other embodiments, input/output unit can also be other elements with input/output function.
Schematic illustration, the collected voltage of the present embodiment, electric current, temperature are considered to the analysis meter of the present embodiment degree of safety below
Degree is respectively Ux=3.7V, Ix=9A, Tx=57.5 DEG C, then tables look-up 1, and table 2,3 corresponding S (U)=80% of table, S (I)=
30%, S (T)=10%.
Thus degree of safety S=S (U) ∪ S (I) the ∪ S (T)=10% for obtaining battery, already close to dangerous edge, it should
It takes safety measures in time, combustion explosion accident otherwise can occur.
The present embodiment provides the analysis calculation method for carrying out degree of safety using three voltage, electric current and temperature parameters, for
More parameters, and so on.
As another embodiment of the present invention, using nickel cobalt aluminium ternary lithium ion 100Ah/3.6V single battery, 50 simultaneously
Connection is one group, using 160 groups of series connection, total voltage 576V.Gross energy is 2.88MWh.
Signal pickup assembly uses RS485-1608 data collection system, may be implemented the voltage of multichannel, electric current, temperature,
Humidity, pressure, vibration parameter measurement.The data collection system precision is high, and the operation is stable can acquire the voltage of battery module
Signal, current signal and temperature signal, and be converted into digital signal and connect by 485 buses with signal processing apparatus.
Signal processing apparatus uses 15 cun of technical grade touch-screen tablet computers of TPC-150T-ATOM model, 15 cun of very color liquid crystal
Display screen, resolution ratio 1024x768, the fan-free processor of built-in Intel atom 1.6GHz low-power consumption are equipped with industry control abundant
Common interfaces processed, hard disk meet industry spot power supply using unique Aseismic Design, 6~30V DC supply input, and power supply provides
Burst current insurance design prevents from leading to component wear because electric current is excessive, large area aluminium fin heat dissipation design, it is ensured that in severe work
The non-stop run of industry scene.
Signal processing apparatus is in order to realize and battery system degree of safety display device, control device and finger-impu system
Communication, the battery management system with cell safety degree display function further comprise communication interface arrangement, this example uses standard
CAN interface module.
Battery management system with cell safety degree display function further includes that liquid crystal display and keyboard are defeated as inputting
Device out, in order to which security control parameter is manually entered and shows degree of safety as a result, keyboard uses the panel of 12 key of KMX-12 type
Formula touch-key, display use 7 cun of colour liquid crystal display devices of ZM-07 type.Certainly, defeated in other embodiments of the present invention
Enter the output device element with input/output function that can also be other.
Schematic illustration is considered to the analysis meter of the present embodiment degree of safety below, if measurement voltage, electric current, temperature are respectively Ux
=3.7V, Ix=5A, Tx=38 DEG C, in addition to the method for obtaining degree of safety by the way of tabling look-up in a upper embodiment, this implementation
Degree of safety is calculated using equation in example, and formula is specific as follows:
Voltage S (U)=Ku*Ux+Bu；, electric current S (I)=Ki*Ix+Bi；Temperature S (T)=Kt*Tx+Bt；
For a specific battery pack structure, undetermined coefficient determines Ku=-167, Bu=697 by testing, Ki=-10,
Bi=100, Kt=-2.5, Bt=162.5.
Voltage S (U)=Ku*Ux+Bu=79.1 can be found out according to formula；Electric current S (I)=Ki*Ix+Bi=50；Temperature S
(T)=Kt*Tx+Bt=67.5.
S=S (U) ∪ S (I) ∪ S (T)=50% is defined according to degree of safety, battery system can be safely operated.
Cell safety system for managing state provided by the invention can make the operator of driver or battery system straight
The cell safety state seen in battery system degree of safety display device is connect, the transmission of cell safety accident can be effectively avoided,
Moreover, the safe condition is the degree of safety parameter of a quantization, shown using number or simulation instrument, fast, intuitively, simply,
It is convenient, it is practical.
In order to achieve the above objectives, the present invention also provides a kind of cell safety method of state management, this method is applied to upper
It states on cell safety system for managing state, the safe condition of battery can be quantified, and shown, referred to for operator.
For convenience, the safe condition of battery is indicated with battery degree of safety S.
Definition is made to the degree of safety S of battery first: according to scientific common sense, defining the critical point that combustion explosion occurs for battery
For degree of safety 0%；According to battery working principle, define battery current be zero, charging state 20%, at 25 DEG C, one of normal temperature
Normal atmosphere pressure, is defined as degree of safety 100%.
In concrete application, the limit value parameter for the cell voltage, electric current, temperature that enterprise's battery specifications book provides can specify that
Or degree of safety is corresponded to equal to 0% by testing obtained battery limit parameter；It is equivalent to cell safety boundary, can not be exceeded.
Regulation is at 25 DEG C of normal temperature, and under a standard atmosphere condition, when state-of-charge is 20%, charging or discharging current is zero Shi Anquan
Degree is most safe at this time equal to 100%.
It is greater than 0% in degree of safety, less than in 100% range, public affairs are can be used in corresponding different measurement voltage, electric current, temperature
Formula method, look-up table calculate different degree of safety numerical value.Formula can be used in voltage, electric current, the hygrometric formula of equation: voltage S
(U)=Ku*Ux+Bu；Wherein: Ux is voltage measuring value, and Ku, Bu are undetermined coefficient, electric current S (I)=Ki*Ix+Bi；Wherein: Ix
For current measurement value, Ki, Bi are undetermined coefficient, temperature S (T)=Kt*Tx+Bt；Wherein: Tx is measured temperature, Kt, Bt be to
Determine coefficient.See Table 1 for details for look-up table, table 2, table 3.
Certainly different safe degrees can also be defined according to different battery use conditions and different security requirements
Value.Three parameter cell safety degree can be represented by the formula:
S=S (U) ∪ S (I) ∪ S (T)
Wherein: S is known as cell safety degree, and S (U) is known as cell voltage safe condition, and S (I) is known as the safe shape of battery current
State, S (T) are known as battery temperature safe condition, are the relationship of logical "or" between S (U), S (I) and S (T), are indicated with " ∪ ", if
Occur simultaneously, S takes degree of safety minimum value.
Be above by taking three voltage, electric current, temperature parameters as an example, for more parameters, and so on.
| S (U) % | 100 | 90 | 80 | 70 | 60 | 50 | 40 | 30 | 20 | 10 | 0 |
| U(V) | 3.6 | 3.65 | 3.7 | 3.75 | 3.8 | 3.85 | 3.9 | 3.95 | 4.0 | 4.1 | 4.2 |
Table 1
| S (I) % | 100 | 90 | 80 | 70 | 60 | 50 | 40 | 30 | 20 | 10 | 0 |
| I(A) | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
Table 2
| S (T) % | 100 | 90 | 80 | 70 | 60 | 50 | 40 | 30 | 20 | 10 | 0 |
| T(℃) | 25 | 27.5 | 30 | 32.5 | 35 | 37.5 | 40 | 45 | 50 | 57.5 | 65 |
Table 3
Fig. 3 is the flow diagram of cell safety of embodiment of the present invention method of state management, as shown in figure 3, cell safety
The step of method of state management, is as follows:
Step 301: the functional parameter value of acquisition battery module in real time, the functional parameter value includes the electricity of battery module
Pressure, electric current, cell internal pressure, battery temperature, environment temperature, ambient pressure, environmental vibration and state-of-charge；
Step 302: analytical calculation being carried out to the functional parameter value of the battery module, obtains the safety of the battery module
Analyze the degree of safety of result and battery；
Step 303: showing the safety analysis result of the battery module and the degree of safety of battery；
Step 304: whether the degree of safety for judging the battery module has been more than secure threshold, and the secure threshold is by described
The physical characteristic decision of battery module, or by user setting；
Step 305: when the degree of safety of the battery module has been more than secure threshold, sounding an alarm instruction.
When the degree of safety of the battery has been more than secure threshold, control instruction, the control instruction energy can be sent out
It is enough that the system for being mounted with the battery module is controlled, prevent the generation of safety accident.
Wherein, step 202 carries out analytical calculation to the functional parameter value of the battery module, obtains the safety of battery module
Degree, specifically includes:
Mathematical operation or logical relation operation are used to the functional parameter value of the battery module, obtain the battery mould
The degree of safety of block, the mathematical operation include add, subtract, multiplication and division, power, evolution, differential, integral, correlation analysis, the logic
Relational calculus include logical operation with or it is non-.
It can also be using data lookup table, mathematical formulae calculating, logging, empirical data application, theory deduction pair
The functional parameter value of the battery module is handled.
Cell safety method of state management provided by the invention can make the operator of driver or battery system straight
The cell safety state seen on display and control unit is connect, the transmission of cell safety accident can be effectively avoided, moreover, the peace
Total state is the degree of safety parameter of a quantization, is shown using number or simulation instrument, fast, intuitively, simply, convenient, practical.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For system disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, foundation
Thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is not
It is interpreted as limitation of the present invention.
Claims (10)
1. a kind of cell safety system for managing state, which is characterized in that the system comprises:
Battery system degree of safety display device, the battery system degree of safety display device are installed on the operation panel of operator
On, the battery system degree of safety display device is used to show the Security analysis result and degree of safety of battery module, operator
Member being capable of degree of safety that is real-time, quick, intuitive and easily seeing battery system；
Signal pickup assembly, the signal pickup assembly are used to acquire the functional parameter of battery module, the functional parameter
Including voltage, electric current, cell internal pressure, battery temperature, state-of-charge, environment temperature, ambient pressure and electric car data,
The electric car data include environmental vibration, motor speed, speed of operation and automobile position；
Signal processing apparatus, the signal processing apparatus for performing mathematical calculations to the functional parameter of the battery module or
Logical operation obtains the Security analysis result and degree of safety of the battery module；It is greater than 0% in degree of safety, less than 100% model
In enclosing, corresponding different measurement voltage, electric current, temperature calculate different degree of safety numerical value using equation or look-up table；It is public
Voltage, electric current, the hygrometric formula of formula method use formula: voltage S (U)=Ku*Ux+Bu；Wherein: Ux is voltage measuring value, Ku, Bu
For undetermined coefficient, electric current S (I)=Ki*Ix+Bi；Wherein: Ix is current measurement value, and Ki, Bi are undetermined coefficient, temperature S (T)=
Kt*Tx+Bt；Wherein: Tx is measured temperature, and Kt, Bt are undetermined coefficient；In look-up table, according to different battery use conditions
With different security requirements, different degree of safety numerical value is defined；Three parameter cell safety degree are indicated with following formula: S=S (U) ∪ S
(I)∪S(T)；Wherein: S is known as cell safety degree, and S (U) is known as cell voltage safe condition, and S (I) is known as battery current safety
State, S (T) are known as battery temperature safe condition, are the relationship of logical "or" between S (U), S (I) and S (T), are indicated with " ∪ ",
If occurring simultaneously, S takes degree of safety minimum value；
Communication interface arrangement, the communication interface arrangement include keyboard input dress for connecting peripheral equipment, the peripheral equipment
It sets, control device, the finger-impu system is used to manually preset secure threshold, report according to different security requirements
Required parameter when alert parameter and signal processing；The control device is for issuing alarm command and control instruction；
The communication interface arrangement is connected with the signal processing apparatus, the signal pickup assembly and the signal processing device
It sets and is connected, the battery system degree of safety display device is connected by the communication interface arrangement with the signal processing apparatus
It connects.
2. cell safety system for managing state according to claim 1, which is characterized in that the battery module is plumbic acid electricity
Pond, ickel-cadmium cell, nickel-metal hydride battery, lithium ion battery, fuel cell, solar battery, smee cell or lithium-sulfur cell.
3. cell safety system for managing state according to claim 1, which is characterized in that the signal processing device is set to can
Intellectual computing device is programmed, it includes DSP digital signal processor, digital computer, industry that the programmable, intelligent, which calculates equipment,
Control machine, PC application and Single Chip MC in Embedded System.
4. cell safety system for managing state according to claim 1, which is characterized in that the communication interface arrangement leads to
News mode includes Ethernet, CAN bus, 1553B bus, RS232 bus, 485 buses, bluetooth or wifi.
5. cell safety system for managing state according to claim 1, which is characterized in that the battery system degree of safety is aobvious
Showing device can show or simulate instrument using digital instrument and show.
6. cell safety system for managing state according to claim 1, which is characterized in that the battery system degree of safety is aobvious
Showing device can using LCD display, UFB display, STN display, OLED display, TFT display, light-emitting diode display or
Person's CRT monitor or electric vehicle instrument disk, mobile phone, MP4, MP5, ipad.
7. a kind of applied to a kind of cell safety condition managing side of cell safety system for managing state as described in claim 1
Method characterized by comprising
The functional parameter of acquisition battery module in real time, the functional parameter includes the voltage, electric current, battery mould of battery module
Block internal pressure, battery module temperature, environment temperature, ambient pressure, environmental vibration and state-of-charge；
Analytical calculation is carried out to the functional parameter of the battery module, obtains the safety analysis result and electricity of the battery module
The degree of safety of pond module；It is greater than 0% in degree of safety, less than in 100% range, corresponds to different measurement voltage, electric current, temperature,
Different degree of safety numerical value is calculated using equation or look-up table；Voltage, electric current, the hygrometric formula of equation use formula:
Voltage S (U)=Ku*Ux+Bu；Wherein: Ux is voltage measuring value, and Ku, Bu are undetermined coefficient, electric current S (I)=Ki*Ix+Bi；Its
In: Ix is current measurement value, and Ki, Bi are undetermined coefficient, temperature S (T)=Kt*Tx+Bt；Wherein: Tx is measured temperature, Kt,
Bt is undetermined coefficient；In look-up table, according to different battery module use conditions and different security requirements, define different
Degree of safety numerical value；Three parameter battery module degrees of safety are indicated with following formula: S=S (U) ∪ S (I) ∪ S (T)；Wherein: S is known as battery
Module safety degree, S (U) are known as battery module voltages safe condition, and S (I) is known as battery module electric current safe condition, and S (T) is known as
Battery module temperature safety state is the relationship of logical "or" between S (U), S (I) and S (T), is indicated with " ∪ ", if sending out simultaneously
Raw, S takes degree of safety minimum value；
Show the safety analysis result of the battery module and the degree of safety of battery module；
Whether the degree of safety for judging the battery module has been more than secure threshold, the secure threshold by the battery module object
It manages characteristic to determine, or by user setting；
If it is, sounding an alarm instruction.
8. cell safety method of state management according to claim 7, which is characterized in that the method also includes:
When the degree of safety of the battery module has been more than secure threshold, control instruction is issued, the control instruction can be to dress
The system for being loaded with the battery module is controlled, and the generation of safety accident is prevented.
9. cell safety method of state management according to claim 7, which is characterized in that the function of the battery module
Property parameter carry out analytical calculation, obtain the degree of safety of battery module, specifically include:
Mathematical operation or logical relation operation are used to the functional parameter of the battery module, obtain the battery module
Degree of safety, the mathematical operation include add, subtract, multiplication and division, power, evolution, differential, integral, correlation analysis, the logical relation
Operation include logical operation with or it is non-.
10. cell safety method of state management according to claim 9, which is characterized in that the function of the battery module
Energy property parameter carries out analytical calculation, obtains the degree of safety of battery module, also specifically includes:
Using data lookup table, mathematical formulae calculating, logging, empirical data application, theory deduction to the battery mould
The functional parameter of block is handled.
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| CN111983466A (en) * | 2020-08-24 | 2020-11-24 | 哈尔滨市新量能电气技术有限公司 | Lithium battery safety degree estimation method and device based on voltage and temperature characteristics |
| CN111983469B (en) * | 2020-08-24 | 2023-08-22 | 哈尔滨理工大学 | Lithium battery safety degree estimation method and device based on voltage safety boundary and temperature safety boundary |
| CN114179617A (en) * | 2021-12-10 | 2022-03-15 | 山东爱德邦智能科技有限公司 | Battery spontaneous combustion control method and device and medium thereof |
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