CN106159357A - New forms of energy electric automobile lithium iron phosphate battery package management system - Google Patents

New forms of energy electric automobile lithium iron phosphate battery package management system Download PDF

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Publication number
CN106159357A
CN106159357A CN201610517550.XA CN201610517550A CN106159357A CN 106159357 A CN106159357 A CN 106159357A CN 201610517550 A CN201610517550 A CN 201610517550A CN 106159357 A CN106159357 A CN 106159357A
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CN
China
Prior art keywords
module
mainboard
electric vehicle
energy electric
daughter board
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610517550.XA
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Chinese (zh)
Inventor
吴正斌
吴三
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Tianjin CAS Institute of Advanced Technology
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Tianjin CAS Institute of Advanced Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tianjin CAS Institute of Advanced Technology filed Critical Tianjin CAS Institute of Advanced Technology
Priority to CN201610517550.XA priority Critical patent/CN106159357A/en
Publication of CN106159357A publication Critical patent/CN106159357A/en
Pending legal-status Critical Current

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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
    • 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
    • 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
    • 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
    • H01M10/488—Cells or batteries combined with indicating means for external visualization of the condition, e.g. by change of colour or of light density
    • 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
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • 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
    • 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

Abstract

The invention provides a lithium iron phosphate battery pack management system for a new energy electric vehicle, which belongs to the technical field of new energy vehicles and comprises a main board, daughter boards and a CAN bus, wherein the management system consists of the main board and a plurality of daughter boards, the main board is connected with the daughter boards through the CAN bus, each daughter board CAN manage 24 batteries and transmit data to the main board through the CAN bus, and the main board performs centralized processing on the data of each daughter board and is responsible for external communication and display so as to form a battery management network. The invention has the beneficial effects that: the distributed design is adopted, the distributed type battery pack voltage prediction method has the advantages of flexible application, strong expansibility, high acquisition and data processing speed and the like, can acquire data such as the total voltage of the battery pack, the voltage of each monomer and the insulation performance detection in real time, displays the data in real time through the touch screen liquid crystal display terminal, combines the research of the working condition characteristics of the actual vehicle, can more accurately estimate the SOC and predict the service life of the battery, and provides powerful guarantee for the safe operation of the electric vehicle.

Description

A kind of New-energy electric vehicle ferric phosphate lithium cell assures reason system
Technical field
The present invention relates to technical field of new energy, particularly relate to a kind of New-energy electric vehicle ferric phosphate lithium cell bag Management system.
Background technology
Along with the fast development of electric automobile, its energy source power battery pack, become the bottle of Development of Electric Vehicles Neck, and lithium ion battery is due to its outstanding power and energy characteristics, is presently believed to be the energy of electric automobile unique feasible Store solution, but, overcharge, cross put, overcurrent and short circuit etc. on performance of lithium ion battery impact greatly, and overcharge, mistake Put and other incorrect using method easily cause safety problem, and battery management system is the key solving this problem, The research and development present situation of comprehensive domestic and international battery management system in recent years, although achieve bigger progress and development, but electric Electrical automobile accident occurs the most again and again, and this shows that battery management system is not mature enough, has bigger development space, studies carefully it former Cause, is because major part battery management system and is primarily directed to the discharge and recharge test that set of cells static state is carried out, and dynamic problem considers Must lack, in electric automobile runs, the service condition of battery bag is more complicated, and the interference problem of each side is the most serious, prominent Going out, these, to the reliability of battery management system, adaptability, safety, are proposed higher requirement.Therefore, in the urgent need to With more efficient way and the more appropriate algorithm of employing, each parameter of battery bag is carried out dynamic estimation, reduce to greatest extent The vehicle failure number of times caused because battery surprisingly lost efficacy, and promote the service life of battery bag and the utilization effect of battery Rate.
Summary of the invention
The invention provides a kind of New-energy electric vehicle ferric phosphate lithium cell and assure reason system, use Distributed Design, Have application flexibly, the advantage such as autgmentability is strong, gather and data processing speed is fast, it is possible to Real-time Collection battery bag total voltage, each The data such as monomer voltage and insulating properties detection, and shown in real time by touch screen liquid crystal display terminal, special in conjunction with real vehicle operating mode Journal of Sex Research, it is possible to more accurately carry out SOC estimation and battery life predicting, is provided with for the safe operation of electric automobile and tries hard to keep Card.
For solving above-mentioned technical problem, the embodiment of the present application provides a kind of New-energy electric vehicle ferric phosphate lithium cell bag Management system, including mainboard, daughter board and CAN, management system is made up of one piece of mainboard and some pieces of daughter boards, mainboard and each Daughter board is connected by CAN, and each daughter board can manage 24 batteries, and by CAN, data are transferred to mainboard, mainboard The data of each daughter board are focused on, and responsible correspondence with foreign country and display, form a battery management network with this.
As the preferred embodiment of this programme, the primary processor of described mainboard uses the high-end dsp chip of TI company, if There are battery bag total current detection module, total voltage detection module, upper body case temperature detecting module, and have outside CAN interface Boundary's communication module.
As the preferred embodiment of this programme, described daughter board uses the battery management application-specific integrated circuit chip of Linear Techn Inc. LTC6804, inside comprises anti-reverse protection module, electromagnetic interface filter module, under-voltage protective module, overcurrent protection module, overvoltage guarantor Protect module, ESD protects module, Load Dump to protect module.
As the preferred embodiment of this programme, described mainboard is additionally provided with collection and the calculating mould of insulation resistance detection Block, by the principle of the insulation resistance between insulation resistance or HV-and GND between detection HV+ and GND, enters insulation resistance Row calculates.
As the preferred embodiment of this programme, the voltage acquisition module arranged in described daughter board uses Linear forth generation Battery management chip ltc6804-2 realizes, and uses sampling holding technology and two-way 16bits ∑ Λ AD, is internally integrated IsoSPI interface, and self-defined crc15 communication protocol.
As the preferred embodiment of this programme, the CAN interface of described mainboard use magnetic every technology, ESD protection technology, EMI filtering technique, wherein magnetic is pressure for the isolation providing up to 2500Vrms every technology, and magnetic provides isolation every chip simultaneously 5V is for the power supply with CAN Drive.
The one or more technical schemes provided in the embodiment of the present application, at least have the following technical effect that or advantage:
Use Distributed Design, have application flexibly, the advantage such as autgmentability is strong, gather and data processing speed is fast, it is possible to The data such as Real-time Collection battery bag total voltage, each monomer voltage and insulating properties detection, and by touch screen liquid crystal display terminal Display in real time, studies in conjunction with real vehicle working characteristics, it is possible to more accurately carry out SOC estimation and battery life predicting, for electronic The safe operation of automobile provides strong guarantee.
Accompanying drawing explanation
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 embodiment or existing In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this Some bright embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to Other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the embodiment of the present application；
Fig. 2 is the motherboard hardware overall architecture schematic diagram of the embodiment of the present application；
Fig. 3 is the daughter board hardware overall architecture schematic diagram of the embodiment of the present application.
In Fig. 1-Fig. 3: 1, mainboard, 2, daughter board, 3, CAN.
Detailed description of the invention
The invention provides a kind of New-energy electric vehicle ferric phosphate lithium cell and assure reason system, use Distributed Design, Have application flexibly, the advantage such as autgmentability is strong, gather and data processing speed is fast, it is possible to Real-time Collection battery bag total voltage, each The data such as monomer voltage and insulating properties detection, and shown in real time by touch screen liquid crystal display terminal, special in conjunction with real vehicle operating mode Journal of Sex Research, it is possible to more accurately carry out SOC estimation and battery life predicting, is provided with for the safe operation of electric automobile and tries hard to keep Card.
In order to be better understood from technique scheme, below in conjunction with Figure of description and specific embodiment to upper State technical scheme to be described in detail.
As shown in Figure 1-Figure 3, a kind of New-energy electric vehicle ferric phosphate lithium cell assures reason system, including mainboard 1, daughter board 2 and CAN 3, management system is made up of one piece of mainboard 1 and some pieces of daughter boards 2, and mainboard 1 and each daughter board 2 are by CAN 3 Being connected, each daughter board 2 can manage 24 batteries, and by CAN 3, data are transferred to mainboard 1, and mainboard 1 is to each daughter board 2 Data focus on, and responsible correspondence with foreign country and display, form a battery management network with this, each daughter board 2 Properity is consistent, can exchange, being conveniently increased and decreased of daughter board 2, only need to change software and just can set up new system, distribution from new Formula design have application flexibly, the advantage such as autgmentability is strong, gather and data processing speed is fast.
Wherein, in actual applications, the primary processor of described mainboard 1 uses the high-end dsp chip of TI company, is provided with electricity Pond bag total current detection module, total voltage detection module, upper body case temperature detecting module, and the external world with CAN interface is logical Letter module, it is possible to Real-time Collection battery bag total voltage, each monomer battery voltage, battery bag total current, each battery the temperature inside the box is surveyed The amount point data such as temperature and insulating properties detection are also shown in real time by touch screen liquid crystal display terminal, more accurately carry out SOC estimation and battery life predicting, the safe operation for electric automobile provides strong guarantee.
Wherein, in actual applications, described daughter board 2 uses the battery management application-specific integrated circuit chip of Linear Techn Inc. LTC6804, inside comprises anti-reverse protection module, electromagnetic interface filter module, under-voltage protective module, overcurrent protection module, overvoltage guarantor Protect module, ESD protects module, Load Dump to protect module, it is ensured that hardware system safe and reliable operation.
Wherein, in actual applications, described mainboard 1 is additionally provided with collection and the computing module of insulation resistance detection, logical Cross the principle of insulation resistance between insulation resistance or HV-and GND between detection HV+ and GND, insulation resistance is counted Calculating, it is achieved that measurement apparatus and the electrical isolation of power accumulator, security performance is high, and without voltage-current sensor, only Needing divider resistance and amplifier, low cost, power consumption is little, this online insulation detecting method can detect exactly various in the case of electric power storage The insulation resistance in pond, meets electric automobile on-line real-time measuremen demand.
Wherein, in actual applications, the voltage acquisition module arranged in described daughter board 2 uses Linear forth generation battery Managing chip ltc6804-2 realizes, and this chip meets ISO 26262 requirement, support differential pair mode and MCU and other Ltc6804-2 communicates；And use sampling holding technology and two-way 16bits ∑ Λ AD, it is possible to ensure each point voltage sample time Consistent；It is internally integrated isoSPI interface, and self-defined crc15 communication protocol, improves isolation voltage endurance capability, anti-noise ability By force.
Wherein, in actual applications, the CAN interface of described mainboard 1 uses magnetic every technology, ESD protection technology, EMI filter Wave technology, wherein magnetic is pressure for the isolation providing up to 2500Vrms every technology, and magnetic provides the 5V of isolation to use every chip simultaneously In the power supply with CAN Drive.
Wherein, in actual applications, described slips 6 is arranged on the vertebral body 7 of riveter 1, and outside is provided with protection set, makes Slips 6 difficult drop-off, the two-way disengagement unfreezing of upper lower cone, unfreezing is thorough, easily trips out.
The above, be only presently preferred embodiments of the present invention, and the present invention not makees any pro forma restriction, though So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any technology people being familiar with this specialty Member, in the range of without departing from technical solution of the present invention, when the technology contents of available the disclosure above makes a little change or modification For the Equivalent embodiments of equivalent variations, as long as being the content without departing from technical solution of the present invention, the technical spirit of the foundation present invention Any simple modification, equivalent variations and the modification being made above example, all still falls within the range of technical solution of the present invention.

Claims (6)

1. New-energy electric vehicle ferric phosphate lithium cell assures a reason system, including mainboard (1), daughter board (2) and CAN (3), it is characterised in that management system is made up of one piece of mainboard (1) and some pieces of daughter boards (2), mainboard (1) and each daughter board (2) Being connected by CAN (3), each daughter board (2) can manage 24 batteries, and by CAN (3), data are transferred to mainboard (1), the data of each daughter board (2) are focused on by mainboard (1), and responsible correspondence with foreign country and display, form one with this Individual battery management network.
A kind of New-energy electric vehicle ferric phosphate lithium cell the most according to claim 1 assures reason system, it is characterised in that The primary processor of described mainboard (1) uses the high-end dsp chip of TI company, is provided with battery bag total current detection module, always electricity Pressure detection module, upper body case temperature detecting module, and there is the extraneous communication module of CAN interface.
A kind of New-energy electric vehicle ferric phosphate lithium cell the most according to claim 1 assures reason system, it is characterised in that Described daughter board (2) uses the battery management application-specific integrated circuit chip LTC6804 of Linear Techn Inc., and inside comprises anti-reverse protection mould Block, electromagnetic interface filter module, under-voltage protective module, overcurrent protection module, overvoltage protective module, ESD protect module, Load Dump Protection module.
A kind of New-energy electric vehicle ferric phosphate lithium cell the most according to claim 1 assures reason system, it is characterised in that Described mainboard (1) is additionally provided with collection and the computing module of insulation resistance detection, by the insulation between detection HV+ and GND The principle of the insulation resistance between resistance or HV-and GND, calculates insulation resistance.
A kind of New-energy electric vehicle ferric phosphate lithium cell the most according to claim 1 assures reason system, it is characterised in that The voltage acquisition module arranged in described daughter board (2) uses Linear forth generation battery management chip ltc6804-2 to realize, and And use sampling holding technology and two-way 16bits Σ Λ AD, it is internally integrated isoSPI interface, and self-defined crc15 communication protocols View.
A kind of New-energy electric vehicle ferric phosphate lithium cell the most according to claim 1 assures reason system, it is characterised in that The CAN interface of described mainboard (1) uses magnetic every technology, ESD protection technology, EMI filtering technique, and wherein magnetic is used for carrying every technology Isolation for up to 2500Vrms is pressure, and magnetic provides the 5V of isolation for the power supply with CAN Drive every chip simultaneously.
CN201610517550.XA 2016-07-04 2016-07-04 New forms of energy electric automobile lithium iron phosphate battery package management system Pending CN106159357A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610517550.XA CN106159357A (en) 2016-07-04 2016-07-04 New forms of energy electric automobile lithium iron phosphate battery package management system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610517550.XA CN106159357A (en) 2016-07-04 2016-07-04 New forms of energy electric automobile lithium iron phosphate battery package management system

Publications (1)

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CN106159357A true CN106159357A (en) 2016-11-23

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109270369A (en) * 2018-09-10 2019-01-25 北京新能源汽车股份有限公司 A kind of the daughter board identification mould group and numbering method of battery management system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109270369A (en) * 2018-09-10 2019-01-25 北京新能源汽车股份有限公司 A kind of the daughter board identification mould group and numbering method of battery management system
CN109270369B (en) * 2018-09-10 2021-04-23 北京新能源汽车股份有限公司 Daughter board identification module of battery management system and number processing method

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Application publication date: 20161123

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