CN108327553A - A kind of power battery management system for electric vehicle - Google Patents

A kind of power battery management system for electric vehicle Download PDF

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Publication number
CN108327553A
CN108327553A CN201810082140.6A CN201810082140A CN108327553A CN 108327553 A CN108327553 A CN 108327553A CN 201810082140 A CN201810082140 A CN 201810082140A CN 108327553 A CN108327553 A CN 108327553A
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CN
China
Prior art keywords
module
controller
power battery
electric vehicle
signal
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
CN201810082140.6A
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Chinese (zh)
Inventor
徐志强
马春秀
黄欢
徐斌
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New (wuxi) Development Co Ltd
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New (wuxi) Development Co Ltd
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 New (wuxi) Development Co Ltd filed Critical New (wuxi) Development Co Ltd
Priority to CN201810082140.6A priority Critical patent/CN108327553A/en
Publication of CN108327553A publication Critical patent/CN108327553A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L58/00Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00Fire alarms; Alarms responsive to explosion
    • G08B17/06Electric actuation of the alarm, e.g. using a thermally-operated switch
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00Fire alarms; Alarms responsive to explosion
    • G08B17/10Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies relating to charging of electric vehicles
    • Y02T90/16Information or communication technologies improving the operation of electric vehicles

Abstract

The invention discloses a kind of power battery management systems for electric vehicle, including power battery, power battery includes multiple batteries being connected in series with, and further includes smoke sensing module, voltage acquisition module, spi bus interface module, current acquisition module, A/D converter, temperature collecting module, controller, RS232 communication modules, CAN transceiver modules, PC machine, electric vehicle controller, display module, memory module and alarm module.The present invention can the fire caused by battery thermal runaway be monitored and early warning, and then improve the safety of the electric vehicle using battery management system;The hardware configuration of the present invention is simple, transmission speed is fast, maintenance efficiency is high, reduces cost, reliability and safety height.

Description

A kind of power battery management system for electric vehicle
Technical field
The present invention relates to battery technology fields, especially a kind of power battery management system for electric vehicle.
Background technology
Energy crisis and environmental pollution already become two hang-ups for influencing social development, and countries in the world today is all being endeavoured In this two hang-up of solution.Under the background that the people of other countries constantly appeal " low-carbon life ", new energy starts in occupation of more Carry out more consequence, a part of the lithium battery as new energy has obtained unprecedented development.Especially electric vehicle in recent years Development, more push the application of lithium battery to a new climax.Government and enterprise continue to increase the throwing to ev industry Enter, the highly desirable independent research and development capacity for promoting China's electric vehicle, and battery management system is exactly the key for restricting its development Factor.
Due to the limitation of power and voltage, lithium battery is required for being used in series in most of application scenarios, however lithium battery Difference on capacity, internal resistance, self-discharge rate easily causes the difference of capacity between battery, and because " wooden pail effect " is deposited The single battery of minimum capacity will be depended in the available capacity of, entire battery pack.In addition to this, it is ensured that lithium battery is using The similarly great challenge of safety in the process.Therefore, it is that battery pack is equipped with battery management system to ensure that battery pack is efficient, pacifies Full use just becomes most important.
Battery management system is generally responsible for the calculating of battery in battery pack electricity, battery protection, the electric quantity balancing between battery Signal communication etc. inside and outside control and battery management system.In the prior art, the product for generally using battery, all needs Battery management system arrange in pairs or groups to control.
Since battery is in the fabrication process it is difficult to ensure that have complete homogeneity, meeting between each concatenated battery unit There are the differences of charge or discharge characteristic.Therefore, it when using the battery pack of series-connected cell unit, there is a problem in that: When charging, in same battery pack, even if certain battery units are overcharged, remain on that there are certain battery units to have not yet been reached Saturation;When or discharging again, in same battery pack, some battery units are still not fully discharged, but still some battery units are excessive Electric discharge.In addition, if battery unit is excessively discharged/charges for a long time, it is in the material for constituting battery unit it is possible that aobvious Write deterioration so that one of the reason of characteristic of battery unit becomes different, and this deterioration is difference between aggravating battery unit.
In today of energy crisis getting worse, new energy industry is grown rapidly, and the quantity of electric vehicle is more and more.Electricity Electrical automobile usually manages the power battery in battery case by battery management system and powers for electric vehicle.However, existing battery Management system and battery case do not have fire detection and warning function, to can not be battery thermal runaway when caused by fire thing Therefore effectively detection and early warning are carried out, to reduce the safety of electric vehicle.
Invention content
It is provided the technical problem to be solved by the present invention is to overcome the deficiencies in the prior art a kind of for electric vehicle Power battery management system, the present invention can the fire caused by battery thermal runaway be monitored and early warning, and then improve application The safety of the electric vehicle of battery management system.
The present invention uses following technical scheme to solve above-mentioned technical problem:
According to a kind of power battery management system for electric vehicle proposed by the present invention, including power battery, power battery Further include that smoke sensing module, voltage acquisition module, spi bus interface module, electric current are adopted including multiple batteries being connected in series with Collect module, A/D converter, temperature collecting module, controller, RS232 communication modules, CAN transceiver modules, PC machine, electric vehicle Controller, display module, memory module and alarm module;Wherein,
Voltage acquisition module, for the total voltage signal of the voltage signal for the single battery measured, power battery is total through SPI Line Interface Module is exported to controller;
Current acquisition module, for exporting the current signal for the power battery measured to A/D converter;
A/D converter, for by current signal after analog-to-digital conversion output current digital signal to controller;
Temperature collecting module, for exporting the temperature signal measured to controller;
Smoke sensing module, the concentration for detecting smog in power battery, and by the concentration value of the smog detected export to Controller;
Controller, for receiving voltage signal, current digital signal, temperature signal and smog concentration value analyze After processing, by treated, data are stored in memory module;Data that treated, which are exported to display module, to be shown;Work as temperature When degree signal is more than the concentration value of preset temperature threshold or smog more than preset smog threshold value, output alarm signal to report Alert module alarm;
The communication of controller and electric vehicle controller is carried out by CAN transceiver modules, and the data between controller and PC machine are received Hair is realized by RS232 communication modules.
Scheme, electric current are advanced optimized as a kind of power battery management system for electric vehicle of the present invention Acquisition module includes LM358 chips and resistance;Wherein, one end of the positive input terminal of LM358 chips and resistance connect, resistance it is another One end is connected to ground, and the negative input end of LM358 chips is connect with the output end of LM358 chips, the power end of LM358 chips with+ 12V power supplys connect, and the ground terminal of LM358 chips is connected to ground.
Scheme is advanced optimized as a kind of power battery management system for electric vehicle of the present invention, is controlled Device is microcontroller.
Scheme, monolithic are advanced optimized as a kind of power battery management system for electric vehicle of the present invention Machine is AT89C51 microcontrollers.
Scheme, battery are advanced optimized as a kind of power battery management system for electric vehicle of the present invention Number be 1-12.
The present invention has the following technical effects using above technical scheme is compared with the prior art:
(1)The present invention can the fire caused by battery thermal runaway be monitored and early warning, and then improve using battery management system The safety of the electric vehicle of system;
(2)The hardware configuration of the present invention is simple, transmission speed is fast, maintenance efficiency is high, reduces cost, reliability and safety height;
(3)The present invention considers that working environment is severe in electric vehicle, and gathered data is all made of individual measuring unit, and all Measuring unit greatly reduces interference of the environment to each sample point, improves measurement accuracy close proximity to the source of measurement;This system exists Reliably working under strong electromagnetic interference environment.
Description of the drawings
Fig. 1 is the schematic diagram of the present invention.
Specific implementation mode
Technical scheme of the present invention is described in further detail below in conjunction with the accompanying drawings:
As shown in Figure 1, a kind of power battery management system for electric vehicle, including power battery, power battery include more A battery being connected in series with further includes smoke sensing module, voltage acquisition module, spi bus interface module, current acquisition mould Block, A/D converter, temperature collecting module, controller, RS232 communication modules, CAN transceiver modules, PC machine, Control of Electric Vehicles Device, display module, memory module and alarm module;Wherein,
Voltage acquisition module, for the total voltage signal of the voltage signal for the single battery measured, power battery is total through SPI Line Interface Module is exported to controller;
Current acquisition module, for exporting the current signal for the power battery measured to A/D converter;
A/D converter, for by current signal after analog-to-digital conversion output current digital signal to controller;
Temperature collecting module, for exporting the temperature signal measured to controller;
Smoke sensing module, the concentration for detecting smog in power battery, and by the concentration value of the smog detected export to Controller;
Controller, for receiving voltage signal, current digital signal, temperature signal and smog concentration value analyze After processing, by treated, data are stored in memory module;Data that treated, which are exported to display module, to be shown;Work as temperature When degree signal is more than the concentration value of preset temperature threshold or smog more than preset smog threshold value, output alarm signal to report Alert module alarm;
The communication of controller and electric vehicle controller is carried out by CAN transceiver modules, and the data between controller and PC machine are received Hair is realized by RS232 communication modules.
Current acquisition module includes LM358 chips and resistance;Wherein, one end of the positive input terminal of LM358 chips and resistance Connection, the other end of resistance are connected to ground, and the negative input end of LM358 chips is connect with the output end of LM358 chips, LM358 cores The power end of piece is connect with+12V power supplys, and the ground terminal of LM358 chips is connected to ground.
Controller is microcontroller, and microcontroller can be AT89C51 microcontrollers.The number of battery can be 1-12.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that The specific implementation of the present invention is confined to these explanations.For those of ordinary skill in the art to which the present invention belongs, exist Under the premise of not departing from present inventive concept, several simple deductions or replacement can also be made, all shall be regarded as belonging to the present invention's Protection domain.

Claims (5)

1. a kind of power battery management system for electric vehicle, including power battery, power battery includes that multiple series connection connect The battery connect, which is characterized in that further include smoke sensing module, voltage acquisition module, spi bus interface module, current acquisition Module, A/D converter, temperature collecting module, controller, RS232 communication modules, CAN transceiver modules, PC machine, electric vehicle control Device, display module, memory module and alarm module processed;Wherein,
Voltage acquisition module, for the total voltage signal of the voltage signal for the single battery measured, power battery is total through SPI Line Interface Module is exported to controller;
Current acquisition module, for exporting the current signal for the power battery measured to A/D converter;
A/D converter, for by current signal after analog-to-digital conversion output current digital signal to controller;
Temperature collecting module, for exporting the temperature signal measured to controller;
Smoke sensing module, the concentration for detecting smog in power battery, and by the concentration value of the smog detected export to Controller;
Controller, for receiving voltage signal, current digital signal, temperature signal and smog concentration value analyze After processing, by treated, data are stored in memory module;Data that treated, which are exported to display module, to be shown;Work as temperature When degree signal is more than the concentration value of preset temperature threshold or smog more than preset smog threshold value, output alarm signal to report Alert module alarm;
The communication of controller and electric vehicle controller is carried out by CAN transceiver modules, and the data between controller and PC machine are received Hair is realized by RS232 communication modules.
2. a kind of power battery management system for electric vehicle according to claim 1, which is characterized in that electric current is adopted It includes LM358 chips and resistance to collect module;Wherein, one end of the positive input terminal of LM358 chips and resistance connect, resistance it is another End is connected to ground, and the negative input end of LM358 chips is connect with the output end of LM358 chips, power end and the+12V of LM358 chips Power supply connects, and the ground terminal of LM358 chips is connected to ground.
3. a kind of power battery management system for electric vehicle according to claim 1, which is characterized in that controller For microcontroller.
4. a kind of power battery management system for electric vehicle according to claim 3, which is characterized in that microcontroller For AT89C51 microcontrollers.
5. a kind of power battery management system for electric vehicle according to claim 1, which is characterized in that battery Number is 1-12.
CN201810082140.6A 2018-01-29 2018-01-29 A kind of power battery management system for electric vehicle Pending CN108327553A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810082140.6A CN108327553A (en) 2018-01-29 2018-01-29 A kind of power battery management system for electric vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810082140.6A CN108327553A (en) 2018-01-29 2018-01-29 A kind of power battery management system for electric vehicle

Publications (1)

Publication Number Publication Date
CN108327553A true CN108327553A (en) 2018-07-27

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Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110758103A (en) * 2019-11-01 2020-02-07 张喜云 Battery safety management method and device and new energy automobile
CN112631179A (en) * 2020-12-18 2021-04-09 方奕海 Safety protection control system for backup battery interface of medical equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110758103A (en) * 2019-11-01 2020-02-07 张喜云 Battery safety management method and device and new energy automobile
CN110758103B (en) * 2019-11-01 2020-08-25 张喜云 Battery safety management method and device and new energy automobile
CN112631179A (en) * 2020-12-18 2021-04-09 方奕海 Safety protection control system for backup battery interface of medical equipment

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