CN106364322A - System and method for managing safety condition of battery - Google Patents
System and method for managing safety condition of battery Download PDFInfo
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- CN106364322A CN106364322A CN201610891196.7A CN201610891196A CN106364322A CN 106364322 A CN106364322 A CN 106364322A CN 201610891196 A CN201610891196 A CN 201610891196A CN 106364322 A CN106364322 A CN 106364322A
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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
-
- 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
-
- 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
-
- 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
Abstract
The invention discloses a system and method for managing the safety condition of a battery. The system comprises a battery system safety degree displaying device, a signal acquiring device, a signal processing device, a communication interface device and peripheral equipment, wherein the battery system safety degree displaying device is used for displaying a safety analyzing result and the safety degree of a battery module; the signal acquiring device is used for acquiring functional parameters of the battery module; the signal processing device is used for performing mathematical operation or performing logic operation on the functional parameters of the battery, so as to obtain the safety analyzing result and the safety degree of the battery; the communication interface device is used for being connected with the peripheral equipment; and the peripheral equipment comprises a keyboard input device, a battery system safety degree displaying device and a control device. Through the adoption of the system and the method for managing the safety condition of the battery provided by the invention, an operator can directly see the safety condition of the battery displayed on the control device; and besides, the safety condition is a quantized safety degree parameter, so that the occurrence of safety accidents of the battery can be effectively avoided.
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 technology
At present, battery is more and more extensive in the application in each field, almost include we life, production, the institute of scientific research
There is field.Especially recent, domestic and international new-energy automobile quickly grows, and the demand of battery is increasing, the performance to battery
Require also more and more higher.The safety of particularly battery, is the most important performance of battery system.Just because of cell safety shape
The disappearance of state management, leads to battery catches fire and explosion accident to take place frequently.Only domestic electric automobile field in this year, has occurred that
More than the ten combustion explosion accidents playing lithium ion battery of electric automobile, have had a strong impact on the development of electric automobile, have caused electricity
The extensive concern in electrical automobile field.
Under the operating mode of electric automobile actual motion, the working environment of battery is extremely complex, the unexpected increase of electric current, voltage
Suddenly change, the temperature that the fault of heat abstractor causes raises suddenly, all can cause the security incident of battery.
For the other field of battery applications, safety is similarly important.As accumulation power supply, startup power supply, stand-by power supply
Field.For land, navigation, Aeronautics and Astronautics field, train, automobile, above water craft and the latent device that navigates under water, aircraft and other fly
Row device, energy-accumulating power station, power system, the occasion of communication station and all application batteries, all there is battery and combustion explosion peace occurs
The hidden danger of full accident.
The combustion explosion security incident of battery is caused by many reasons, and has certain probability sexual factor, and
Existing technology should not carry out more in-depth study on the safety hazards to battery, and the safety that battery uses is hidden
Suffer from and cannot solve well always.
Content of the invention
It is an object of the invention to provide a kind of cell safety system for managing state and method, can be to the safe condition of battery
Carry out description and the display of quantification, allow driver or other operator grasp cell safety situation in time, quickly take suitable
Work as measure, effectively prevent security incident from occurring, ensure the safe operation of electrokinetic cell.
For achieving the above object, the invention provides following scheme:
A kind of cell safety system for managing state, described system includes:
Battery system degree of safety display device, described battery system degree of safety display device is installed on the operation of operator
On panel, described battery system degree of safety display device is used for showing Security analysis result, the degree of safety of described battery module,
Operator can be real-time, fast, intuitively, easily sees the degree of safety of battery system；
Signal pickup assembly, described signal pickup assembly is used for gathering the functional parameter of battery module, described feature
Parameter includes voltage, electric current, cell internal pressure, battery temperature, state-of-charge, ambient temperature, ambient pressure and electric automobile
Data, described electric automobile data includes environmental vibration, motor speed, speed of operation and automobile position；
Signal processing apparatus, described signal processing apparatus are used for carrying out mathematics fortune to the functional parameter of described battery module
Calculate or logical operationss, obtain Security analysis result and the degree of safety of described battery module；
Communication interface arrangement, described communication interface arrangement is used for connecting ancillary equipment, and it is defeated that described ancillary equipment includes keyboard
Enter device, control device, described finger-impu system is used for according to different security requirements, manually presets safety threshold
Required parameter when value, alarm parameters and signal processing；Described control device is used for sending alarm command and control instruction；
Described communication interface arrangement is connected with described signal processing apparatus, at described signal pickup assembly and described signal
Reason device is connected, and described battery system degree of safety display device passes through described communication interface arrangement and described signal processing apparatus
It is connected.
Optionally, described battery module be lead-acid battery, ickel-cadmium cell, Ni-MH battery, lithium ion battery, fuel cell,
Solaode, smee cell or lithium-sulfur cell.
Optionally, described signal processing device is set to programmable, intelligent computing device, described programmable, intelligent computing device bag
Include dsp digital signal processor, digital computer, Industrial Control Computer, programmable controller plc and microcontroller embedded system
System.
Optionally, to include Ethernet, can bus, 1553b bus, rs232 total for the communication modes of described communication interface arrangement
Line, 485 buses, bluetooth or wifi.
Optionally, described battery system degree of safety display device can be shown using digital instrument or simulate instrument and show
Show.
Optionally, described battery system degree of safety display device can be shown using lcd display, ufb display, stn
Device, oled display, tft display, led display or crt display, or electric vehicle instrument disk, mobile phone, mp4,
mp5、ipad.
For achieving the above object, present invention also offers a kind of electricity being applied in above-mentioned cell safety system for managing state
Pond safe condition management method, comprising:
The functional parameter value of Real-time Collection battery module, described functional parameter value include the voltage of battery, electric current, in battery
Portion's pressure, battery temperature, ambient temperature, ambient pressure, environmental vibration and state-of-charge；
The functional parameter value of described battery module is analyzed calculating, obtains safety analysis result and the electricity of described battery
The degree of safety of pond module；
Show the safety analysis result of described battery module and the degree of safety of battery；
Judge whether the degree of safety of described battery module has exceeded secure threshold, described secure threshold is by described battery module
Physical characteristics determine, or by user setup；
If it is, sending alarm command.
Optionally, methods described also includes:
When the degree of safety of described battery module has exceeded secure threshold, send control instruction, described control instruction can
The system being mounted with described battery module is controlled, prevents the generation of security incident.
Optionally, the described functional parameter value to described battery module is analyzed calculating, and obtains the safety of battery module
Degree, specifically includes:
Mathematical operation or logical relation computing are adopted to the functional parameter value of described battery module, obtains described battery
Degree of safety, described mathematical operation includes adding, subtracts, multiplication and division, power, evolution, differential, integration, correlation analysiss, described logical relation
Computing include logical operationss with or, non-.
Optionally, the described functional parameter value to described battery module is analyzed calculating, and obtains the degree of safety of battery, also
Specifically include:
Using data lookup table, mathematical formulae calculating, logging, empirical data application, theoretical derivation to described institute
The functional parameter value stating battery is processed.
The specific embodiment being provided according to the present invention, the invention discloses following technique effect: the present invention adopts degree of safety
The safe condition of battery is quantified by this parameter value, and the value of degree of safety is to be with specific reference to the series of parameters of battery, using one
Column count method is calculated, and can characterize the safe coefficient of battery, and, the system and method that the present invention provides can also be by
This degree of safety shows, for work operator's reference, it is to avoid the generation of cell safety accident.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
Need use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only the present invention some enforcement
Example, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the structural representation of embodiment of the present invention cell safety system for managing state；
Fig. 2 is a kind of schematic diagram of display panels of embodiment of the present invention battery management system；
Fig. 3 is the schematic flow sheet of embodiment of the present invention cell safety method of state management.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
It is an object of the invention to provide a kind of battery peace that cell safety state can be carried out with quantitative description and display
Total state management system and method.
Scientific circles also do not define the scientific terminology about quantitative description battery security degree at present, therefore for battery
The evaluation of safe coefficient is very coarse, and international standard, national standard all only specify that " battery occurs combustion explosion, then be judged as electricity
Pond is dangerous " it is impossible to the battery in description work is also how far apart from combustion explosion.Therefore, the field of current battery application is outstanding
It is electric automobile field, be badly in need of a kind of reasonable description cell safety state scientific terminology, for example " safe condition degree " or
" degree of safety ".Urgent need is a kind of can be according to the parameter measurement relevant 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, allow driver or other operator grasp electricity in time
Pond security situation, quickly takes appropriate measures, and effectively prevents security incident from occurring, ensures the safe operation of electrokinetic cell.
Current battery industry, to the safety analysiss of battery and control field, does not also have the clear and definite mark of cell safety state
Certainly justice, has had a strong impact on the safety applications of battery.The present invention proposes the concept of " cell safety degree " in field of batteries innovation,
Furthermore present analysis on Security Degree of Retaining computational methods, and realize in actual battery management system.The invention solves the problems that 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, by cell voltage, electric current, the isoparametric data acquisition of temperature, drawing the degree of safety of battery.Further apply work
In battery management system, can battery operated middle display battery system safe condition.
Understandable for enabling the above objects, features and advantages of the present invention to become apparent from, below in conjunction with the accompanying drawings and specifically real
The present invention is further detailed explanation to apply mode.
Fig. 1 is the structural representation of embodiment of the present invention cell safety 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
Put, finger-impu system, display and control unit and other ancillary equipment.
Battery system degree of safety display device, described battery system degree of safety display device is installed on the operation of operator
On panel, described battery system degree of safety display device is used for showing Security analysis result, the degree of safety of described battery module,
Operator can be real-time, fast, intuitively, easily sees the degree of safety of battery system；
Signal pickup assembly is used for gathering the functional parameter of battery module, described functional parameter include voltage, electric current,
Cell internal pressure, battery temperature, state-of-charge, ambient temperature, ambient pressure and electric automobile data, described electric automobile number
According to inclusion environmental vibration, motor speed, speed of operation and automobile position；
Signal processing apparatus are used for the functional parameter of described battery module is performed mathematical calculations or logical operationss, obtain
The Security analysis result of described battery module and degree of safety；
Communication interface arrangement is used for connecting ancillary equipment, and described ancillary equipment includes finger-impu system, control device, key
Disk input equipment is used for according to different security requirements, manually presets secure threshold, alarm parameters and signal processing
The parameter of Shi Suoxu；Control device is used for sending alarm command and control instruction；
Communication interface arrangement is connected with described signal processing apparatus, communication interface arrangement also with finger-impu system, aobvious
Show and be connected with control device and other ancillary equipment, signal pickup assembly is connected with described signal processing apparatus.
Signal processing apparatus can be dsp digital signal processor, digital computer, Industrial Control Computer, programmable control
Device plc processed and Single Chip MC in Embedded System or other programmable, intelligent computing devices.
The communication modes of communication interface arrangement can using Ethernet, can bus, 1553b bus, rs232 bus, 485
The communication modes such as bus, it would however also be possible to employ the communication such as bluetooth or wifi.
Battery system degree of safety display device can be that digital instrument shows or simulates instrument and shows.Can adopt
With lcd display, ufb display, stn display, oled display, tft display, led display, crt display, electronic
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
Apply a kind of schematic diagram of display panels of a battery management system, as shown in Fig. 2 the peace of battery is shown on display floater
Whole step, the information such as voltage, electric current, temperature.
Battery module can be lead-acid battery, ickel-cadmium cell, Ni-MH battery, lithium ion battery, fuel cell, solar-electricity
Any one in the batteries such as pond, smee cell, lithium-sulfur cell.Could be for electric automobile, 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 stand-by power supply,
And super capacitor system.In this example taking electric bus as a example；Using LiFePO4 200ah/3.2v cell, adopt
150 series connection, total voltage 480v.
As a kind of electrochemical system, when battery operated, inside battery all can produce different electrochemistry to battery module
Reaction, thus export different output signals.The output signal representative of the different characteristic different qualities of battery, thus it is permissible
Reflect the multifrequency nature parameter of inside battery to a great extent.Signal pickup assembly is used for obtaining the output letter of battery module
Number.Specifically, the system is designed with the high-speed AD converter ad9220 of adi company and realizes the collection of waveshape signal,
Ad9220 highest sampling rate, up to 10mhz, is deposited using realizing waveform by sampling inside external crystal oscillator 8mhz, fpga
Storage.Ad9220 has direct-current coupling and two kinds of input modes of AC coupled.The voltage signal of battery module, current signal can be gathered
And temperature signal, and it is converted into digital signal output.Certainly it is easily understood that in other embodiment of the present invention, other
The device with Signals collecting function is also possible.
Specifically, in the present embodiment, signal processing apparatus adopt 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 quickly calculating
Function, digital signal processor employs tms320f2812dsp application system plate, tms320f2812dsp application system strip
There are digital to analog converter and analog-digital converter, be therefore a kind of signal processing apparatus preferably.Certainly, in other enforcements of the present invention
In mode, other devices with signal processing function are also can be applied in the present invention, for example: Industrial Control Computer,
Programmable controller, and other serial Single Chip MC in Embedded Systems.
Signal processing apparatus are 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 comprises communication interface arrangement, and this example adopts standard
Can bus interface module.
Keyboard adopts the panel type touch-key of 12 keys, and display adopts 7 cun of colour liquid crystal display devices.Certainly, at this
In bright other embodiment, input/output unit can also be that other have the element of input/output function.
Below schematic illustration is considered to the analysis meter of the present embodiment degree of safety, voltage that the present embodiment collects, electric current, temperature
Degree is respectively ux=3.7v, ix=9a, tx=57.5 DEG C, then table look-up 1, and table 2, corresponding s (u)=80% of table 3, s (i)=
30%th, s (t)=10%.
Thus draw degree of safety s=s (u) ∪ s (i) ∪ s (t)=10% of battery, already close to dangerous edge it should
Take safety measures in time, combustion explosion accident otherwise can occur.
The present embodiment provides the analysis calculation method carrying out degree of safety using voltage, electric current and three parameters of temperature, for
More parameters, by that analogy.
As another embodiment of the present invention, using nickel cobalt aluminum ternary lithium ion 100ah/3.6v cell, 50 simultaneously
Join for one group, connected using 160 groups, total voltage 576v.Gross energy is 2.88mwh.
Signal pickup assembly adopt rs485-1608 data collecting system, it is possible to achieve the voltage of multichannel, electric current, temperature,
Humidity, pressure, the parameter measurement of vibrations.This data collecting system high precision, working stability, the voltage of battery module can be gathered
Signal, current signal and temperature signal, and be converted into digital signal and be connected with signal processing apparatus by 485 buses.
Signal processing apparatus adopt 15 cun of technical grade touch-screen tablet computers of tpc-150t-atom model, 15 cun of very color liquid crystal
Display screen, resolution 1024x768, built-in intel atom 1.6ghz low-power consumption fan-free processor, it is equipped with abundant industry control
Common interfaces processed, hard disk, using unique Aseismic Design, 6～30v DC supply input, meets industry spot and powers, and power supply provides
Burst current insurance design prevents from leading to component wear because electric current is excessive, and large area aluminum fin heat dissipation design is it is ensured that in severe work
Industry scene non-stop run.
Signal processing apparatus are 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 comprises communication interface arrangement, and this example adopts standard
Can bus interface module.
Having the battery management system of cell safety degree display function, also to include liquid crystal display and keyboard defeated as inputting
Go out device, in order to be manually entered security control parameter with display degree of safety result, keyboard adopts the panel of kmx-12 type 12 key
Formula touch-key, display adopts 7 cun of colour liquid crystal display devices of zm-07 type.Certainly, in other embodiment of the present invention, defeated
Enter output device and can also be that other have the element of input/output function.
Below schematic illustration is considered to the analysis meter of the present embodiment degree of safety, if measurement voltage, electric current, temperature are respectively ux
=3.7v, ix=5a, tx=38 DEG C, in a upper embodiment in addition to the method obtaining degree of safety by the way of tabling look-up, this enforcement
Example is calculated degree of safety using equation, 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 obtained 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 with safe operation.
The cell safety system for managing state that the present invention provides can make the operator of driver or battery system straight
Connect the cell safety state seen in battery system degree of safety display device, the transmission of cell safety accident can be prevented effectively from,
And, this safe condition is the degree of safety parameter of a quantization, is shown using numeral or simulation instrument, fast, intuitively, simply,
Convenient, practical.
For reaching above-mentioned purpose, present invention also offers a kind of cell safety method of state management, the method is applied to
State on cell safety system for managing state, the safe condition of battery can be quantified, and be shown, for operator's reference.
For convenience, the safe condition of battery is represented with battery degree of safety s.
First degree of safety s of battery is made with definition: according to scientific common sense, define the critical point that battery occurs combustion explosion
For degree of safety 0%；According to battery operated principle, define battery current be zero, charging state 20%, in 25 DEG C, one of standard temperature
Standard atmosphere is depressed, and is defined as degree of safety 100%.
In concrete application, can specify that cell voltage, electric current, the limit value parameter of temperature that enterprise's battery specifications book provides
Or degree of safety is corresponded to equal to 0% by the battery limit parameter that test obtains；Be equivalent to cell safety border, can not exceed.
At 25 DEG C of standard temperature, under a standard atmosphere condition, when state-of-charge is 20%, charging or discharging current is safety when zero to regulation
Degree is equal to 100%, now safe.
It is more than 0% in degree of safety, in the range of 100%, the different measurement voltage of correspondence, electric current, temperature, can be using public affairs
Formula method, look-up table calculate different degree of safety numerical value.The voltage of equation, electric current, hygrometric formula can adopt formula: voltage s
(u)=ku*ux+bu；Wherein: ux is voltage measuring value, 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 are to treat
Determine coefficient.Look-up table refers to table 1, table 2, table 3.
Certainly also dependent on different battery use conditions and different security requirements, the different safe number of degrees are defined
Value.Three parameter cell safety degree can be represented by the formula:
S=s (u) ∪ s (i) ∪ s (t)
Wherein: s is referred to as cell safety degree, s (u) is referred to as cell voltage safe condition, and s (i) is referred to as the safe shape of battery current
State, s (t) is referred to as battery temperature safe condition, is the relation of logical "or" between s (u), s (i) and s (t), is represented with " ∪ ", if
Occur, s takes degree of safety minima simultaneously.
It is more than taking voltage, electric current, three parameters of temperature as a example, for more parameters, by that analogy.
| 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 schematic flow sheet of embodiment of the present invention cell safety 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 Real-time Collection battery module, described functional parameter value includes the electricity of battery module
Pressure, electric current, cell internal pressure, battery temperature, ambient temperature, ambient pressure, environmental vibration and state-of-charge；
Step 302: the functional parameter value of described battery module is analyzed calculating, obtains the safety of described battery module
Analysis result and the degree of safety of battery；
Step 303: the display safety analysis result of described battery module and the degree of safety of battery；
Step 304: judge whether the degree of safety of described battery module has exceeded secure threshold, described secure threshold is by described
The physical characteristics of battery module determine, or by user setup；
Step 305: when the degree of safety of described battery module has exceeded secure threshold, send alarm command.
When the degree of safety of described battery has exceeded secure threshold, can be sent out control instruction, described control instruction energy
Enough the system being mounted with described battery module is controlled, prevents the generation of security incident.
Wherein, step 202 is analyzed to the functional parameter value of described battery module calculating, and obtains the safety of battery module
Degree, specifically includes:
Mathematical operation or logical relation computing are adopted to the functional parameter value of described battery module, obtains described battery mould
The degree of safety of block, described mathematical operation includes adding, subtracts, multiplication and division, power, evolution, differential, integration, correlation analysiss, described logic
Relational calculus include logical operationss with or, non-.
Can also be using data lookup table, mathematical formulae calculating, logging, empirical data application, theoretical derivation pair
The functional parameter value of described battery module is processed.
The cell safety method of state management that the present invention provides can make the operator of driver or battery system straight
Connect the cell safety state seeing on display and control unit, the transmission of cell safety accident can be prevented effectively from, and, this peace
Total state is the degree of safety parameter of a quantization, is shown using numeral or simulation instrument, fast, intuitively, simply, convenient, practical.
In this specification, each embodiment is described by the way of going forward one by one, and what each embodiment stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.For system disclosed in embodiment
For, because it corresponds to the method disclosed in Example, so description is fairly simple, say referring to method part in place of correlation
Bright.
Specific case used herein is set forth to the principle of the present invention and embodiment, the saying of above example
Bright it is only intended to help and understands the method for the present invention and its core concept；Simultaneously for one of ordinary skill in the art, foundation
The thought of the present invention, all will change in specific embodiments and applications.In sum, this specification content is not
It is interpreted as limitation of the present invention.
Claims (10)
1. a kind of cell safety system for managing state is it is characterised in that described system includes:
Battery system degree of safety display device, described battery system degree of safety display device is installed on the guidance panel of operator
On, described battery system degree of safety display device is used for showing Security analysis result, the degree of safety of described battery module, operation
Personnel can be real-time, fast, intuitively, easily sees the degree of safety of battery system；
Signal pickup assembly, described signal pickup assembly is used for gathering the functional parameter of battery module, described functional parameter
Including voltage, electric current, cell internal pressure, battery temperature, state-of-charge, ambient temperature, ambient pressure and electric automobile data,
Described electric automobile data includes environmental vibration, motor speed, speed of operation and automobile position；
Signal processing apparatus, described signal processing apparatus be used for the functional parameter of described battery module is performed mathematical calculations or
Logical operationss, obtain Security analysis result and the degree of safety of described battery module；
Communication interface arrangement, described communication interface arrangement is used for connecting ancillary equipment, and described ancillary equipment includes input through keyboard dress
Put, control device, described finger-impu system be used for according to different security requirements, manually preset secure threshold, report
Required parameter when alert parameter and signal processing；Described control device is used for sending alarm command and control instruction；
Described communication interface arrangement is connected with described signal processing apparatus, described signal pickup assembly and described signal processing device
Put and be connected, described battery system degree of safety display device is connected with described signal processing apparatus by described communication interface arrangement
Connect.
2. cell safety system for managing state according to claim 1 is it is characterised in that described battery module is plumbic acid electricity
Pond, ickel-cadmium cell, Ni-MH battery, lithium ion battery, fuel cell, solaode, smee cell or lithium-sulfur cell.
3. cell safety system for managing state according to claim 1 it is characterised in that described signal processing device be set to can
Programming intellectual computing device, described programmable, intelligent computing device includes dsp digital signal processor, digital computer, industry
Control machine, programmable controller plc and Single Chip MC in Embedded System.
4. cell safety system for managing state according to claim 1 it is characterised in that described communication interface arrangement logical
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 is it is characterised in that described battery system degree of safety shows
Showing device can be shown using digital instrument or simulate instrument and show.
6. cell safety system for managing state according to claim 1 is it is characterised in that described battery system degree of safety shows
Showing device can using lcd display, ufb display, stn display, oled display, tft display, led display or
Person's crt display, or electric vehicle instrument disk, mobile phone, mp4, mp5, ipad.
7. a kind of it is applied to a kind of cell safety condition managing side of cell safety system for managing state as claimed in claim 1
Method is it is characterised in that include:
The functional parameter value of Real-time Collection battery module, described functional parameter value includes the voltage of battery, electric current, inside battery pressure
Power, battery temperature, ambient temperature, ambient pressure, environmental vibration and state-of-charge；
The functional parameter value of described battery module is analyzed calculating, obtains safety analysis result and the battery mould of described battery
The degree of safety of block；
Show the safety analysis result of described battery module and the degree of safety of battery；
Judge whether the degree of safety of described battery module has exceeded secure threshold, described secure threshold is by the thing of described battery module
Reason characteristic determines, or by user setup；
If it is, sending alarm command.
8. cell safety method of state management according to claim 1 is it is characterised in that methods described also includes:
When the degree of safety of described battery module has exceeded secure threshold, send control instruction, described control instruction can be to dress
The system being loaded with described battery module is controlled, and prevents the generation of security incident.
9. cell safety method of state management according to claim 1 it is characterised in that described to described battery module
Functional parameter value is analyzed calculating, and obtains the degree of safety of battery module, specifically includes:
Mathematical operation or logical relation computing are adopted to the functional parameter value of described battery module, obtains the safety of described battery
Degree, described mathematical operation includes adding, subtracts, multiplication and division, power, evolution, differential, integration, correlation analysiss, described logical relation computing
Including logical operationss with or, non-.
10. cell safety method of state management according to claim 9 it is characterised in that described to described battery module
Functional parameter value be analyzed calculate, obtain the degree of safety of battery, also specifically include:
Using data lookup table, mathematical formulae calculating, logging, empirical data application, theoretical derivation to described electricity
The functional parameter value in pond is processed.
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