Nadzorni sistem baterijskega paketa

VREČAR, SIMON (author), Krč, Janez (mentor)

V okviru magistrske naloge smo razvili sistem, ki nadzira stanje baterijskega paketa in hkrati preprečuje delovanje baterij izven svojih nazivnih vrednosti. Izveden je s pomočjo namenskega integriranega vezja LTC6811, ki skrbi za zajem in pretvorbo analognih vrednosti v digitalno obliko in za dostop pretvorjenih podatkov z mikrokrmilnikom preko serijskega komunikacijskega vmesnika. Uporabljen mikrokrmilnik je družine PIC proizvajalca Microchip. Sistemu je dodano pasivno izenačevalno vezje, ki skrbi, da so vse baterije znotraj baterijskega paketa enakomerno napolnjene. Na sistem se lahko priklopi do 24 baterij. Nadzor nad baterijami se vrši med praznjenjem in polnjenjem, pri obeh se upošteva takrat veljavne limitne vrednosti parametrov baterij. V primeru napak, lahko nadzornik baterijskega paketa kadarkoli poseže v delovanje zunanjega sistema s svojim nadzornim vezjem za polnjenje in praznjenje, ter tako prepreči delovanje baterij izven nazivnih vrednosti.

• Language: Slovenian
• Keywords: Nadzor baterij, sistem BMS, izenačevanje baterij, baterijski paket, polnjenje baterij
• Work type: Master's thesis/paper
• Organization: FE - Faculty of Electrical Engineering
• Year: 2018
• PID: 20.500.12556/RUL-101262
• Publication date in RUL: 18.05.2018

Secondary language

• Language: English
• Title: Battery management system

Abstract

Within the master's thesis, we have developed a system that controls the state of the battery pack and prevents the operation of batteries beyond their nominal values. It is implemented with a dedicated integrated circuit LTC6811, which provide conversion of analogue values into digital words and access to converted data with microcontroller via serial communication interface. The PIC microcontroller is used from Microchip. A balancing circuit is added to the system, which ensures that all batteries within the battery pack are evenly charged. Up to 24 batteries can be connected to the system. The battery control is performed during charging and discharging state, with taking into account the applicable limit values of each condition. In case of an error, the battery management system can intervene in the operation of the external system at any time with its charge and discharge control circuit and prevent operation of the batteries outside of it's nominal values.

• Keywords: Battery control, BMS system, battery balancing, battery pack, battery charging