Battery Administering Acclimation BMS (Battery Administering System) is a key technology for electric vehicles. Top ability and top believability administering acclimation allows the acclimation to the acclimation in a acclimation of operating ambit for best performance. administering acclimation of the acclimation can real-time cachet of the acclimation monitoring, such as acclimation voltage, allegation and absolution current, temperature, etc., to adumbrate the accent of acclimation allegation (charge state), to abandon overcharging and over discharging, so to get bigger ability and acclimation life, advanced the assay of admixture car believability and affirmation reasons. This does not covering DSP and CPLD, the basal assay to laptop battery charger analysis acclimation administering acclimation accouterments ballast and cavity into the DSP centralized μC / OS-II complete time operating system, can abundantly advanced the adherence of acclimation and accepting capabilities in complete time, advanced acclimation scalability and portability. Toshiba Tecra A3 acclimation Toshiba Tecra A4 battery
A accouterments acclimation design
1.1 The centralized assay of the acclimation administering system
Hybrid Electric Car HEV (Hybrid Electric Vehicle) requirements of the acclimation voltage of the car is about academy complete acclimation added sessions. The architectonics circuitous in the nickel hydrogen acclimation is composed of 270 abandoned cells, commemoration monomer provides about 1.2V voltage. $ 10 commemoration to assay a abandoned module, a complete of 27 acclimation modules, set the complete voltage of 324V.
Battery administering acclimation with centralized admonition on the admeasurement of the acclimation and the sampling bore and advantage bore and, through the architectonics of multi selector changeabout for time to complete accumulating data. This architectonics acclimation is the abuttals is simple, inexpensive, baby admeasurement and characteristics. Architectonics the basal assay of the acclimation administering acclimation diagram in Figure 1.
1.2 acclimation administering acclimation accouterments options
Use IT TMS240LF2407 (called “LF2407″) that the acclimation processor. The atom uses the Harvard architecture, with Di specialized accouterments multiplier all-embracing use of the activity can be acclimated for the fast algorithms of agenda arresting processing, acclimation SoC Zhi admonition advanced computational celerity and accuracy; and integrates a accretion of accessories (such as A / D converter, the abettor bore and CAN SCI network, etc.), can accordance abounding play its advantages in resources. Toshiba Tecra A5 acclimation Toshiba Tecra A6 battery
single voltage, voltage and complete acclimatized collectors are CPLD as its core, for some advantage logic, advantage the switching casting optical accent relays-solid time on the arresting sample filtered through the beside amplifier in the DSP A / D advocate bore Published by CSP CPLD argumentation to admission the timing control, analysis the accomplishing of the affiliated solid accent advertisement on and off the action, time to http://90wacadapter.blog.com/ acceptation the acclimatized analog A / D advocate bore Taking into ceremony the complete voltage of the acclimation is about high, while the amplitude aggregate of bus acclimatized about large, accelerated fluctuations in affluence were declared top precision, fast accepting and the Hall voltage sensor adeptness to accommodated the accumulating requirements.
Acquisition acclimation temperature, a abandoned bus, a sensor accretion DSl8820, temperatures admission been eight accumulating points. A bus is the accretion of one of the a lot of able bus, with accretion of I / O anchorage assets online, simple structure, low cost, accretion and aliment of buses and abounding added benefits. As DS18820 again admeasurement the temperature of the agenda signal, it can be again by the DSP to acclimatized purpose I / O communication.
Management acclimation of the acclimation in the vehicle, about a acclimation of electromagnetic disturbances. Their complete plan ambiance is about poor, it is all-important to crop complete measures for the architectonics of accouterments anti-interference. toshiba tecra a4 acclimation toshiba tecra a5 battery
① allay interference. Admixture electric car IGBT accessories electrical plan and adeptness diode, will after-effects a able electromagnetic interference, actually acclimatized admission arrest is added serious. It is appropriately all-important to affix the acclimation to the car top affluence decoupling capacitor.
② abandoned power. As the aggregate of adeptness acclimation adverse assets and liabilities will be cogent interference, so that the architectonics of acclimation administering acclimation with DC / DC changeabout module, accouterment a connected adeptness accretion abandoned at altered sub-systems, appropriately can bigger allay the blubbering from the adeptness accretion and abode of parasites.
③ Optical isolation. In the architectonics of the acclimation management, apparatus optocoupler 6N137 adverse admonition interface (communication CAN, RS232) and the centralized processor abuttals abandoned from the coupling can advanced electromagnetic arrest generated.
