A switched-capacitor balancing and characterization method and system

Ivan Jørgensen; Pere Llimós Muntal; Dennis Larsen; Thomas Souvignet; Guifré Pausas

A switched-capacitor balancing and characterization method and system

Ivan Jørgensen (Inventor)
, Pere Llimós Muntal (Inventor)
, Dennis Larsen (Inventor)
, Thomas Souvignet (Inventor)
, Guifré Pausas (Inventor)

Research output: Patent

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Abstract

The present disclosure relates to a switched-capacitor balancing and characterization system for balancing and characterization of a plurality of stacked battery cells. The system comprises at least one capacitor (C1, C2, C3) connectable to a plurality of battery cells (106) via switches (104), configured to connect or disconnect the at least one capacitor to the battery cells, a processing unit (103) configured to control the plurality of switches, and a characterizing unit (109) configured to characterize the AC impedance of the battery cells. The processing unit is configured to control the plurality of switches by applying true random or pseudo-random control signals to the plurality of switches, so that the lengths of the switching periods have a random component. The random component provides a noise signal to each battery cell for determining the AC characteristics without generating electromagnetic interference (EMI).

Original language	English
IPC	H02J 7/ 00 A I
Patent number	WO2022136220
Filing date	23/12/2020
Country/Territory	International Bureau of the World Intellectual Property Organization (WIPO)
Priority date	23/12/2020
Priority number	EP20200216994
Publication status	Published - 30 Jun 2022

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title = "A switched-capacitor balancing and characterization method and system",

abstract = "The present disclosure relates to a switched-capacitor balancing and characterization system for balancing and characterization of a plurality of stacked battery cells. The system comprises at least one capacitor (C1, C2, C3) connectable to a plurality of battery cells (106) via switches (104), configured to connect or disconnect the at least one capacitor to the battery cells, a processing unit (103) configured to control the plurality of switches, and a characterizing unit (109) configured to characterize the AC impedance of the battery cells. The processing unit is configured to control the plurality of switches by applying true random or pseudo-random control signals to the plurality of switches, so that the lengths of the switching periods have a random component. The random component provides a noise signal to each battery cell for determining the AC characteristics without generating electromagnetic interference (EMI).",

author = "Ivan J{\o}rgensen and \{Llim{\'o}s Muntal\}, Pere and Dennis Larsen and Thomas Souvignet and Guifr{\'e} Pausas",

year = "2022",

month = jun,

day = "30",

language = "English",

type = "Patent",

note = "WO2022136220; H02J 7/ 00 A I",

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T1 - A switched-capacitor balancing and characterization method and system

AU - Jørgensen, Ivan

AU - Llimós Muntal, Pere

AU - Larsen, Dennis

AU - Souvignet, Thomas

AU - Pausas, Guifré

PY - 2022/6/30

Y1 - 2022/6/30

N2 - The present disclosure relates to a switched-capacitor balancing and characterization system for balancing and characterization of a plurality of stacked battery cells. The system comprises at least one capacitor (C1, C2, C3) connectable to a plurality of battery cells (106) via switches (104), configured to connect or disconnect the at least one capacitor to the battery cells, a processing unit (103) configured to control the plurality of switches, and a characterizing unit (109) configured to characterize the AC impedance of the battery cells. The processing unit is configured to control the plurality of switches by applying true random or pseudo-random control signals to the plurality of switches, so that the lengths of the switching periods have a random component. The random component provides a noise signal to each battery cell for determining the AC characteristics without generating electromagnetic interference (EMI).

AB - The present disclosure relates to a switched-capacitor balancing and characterization system for balancing and characterization of a plurality of stacked battery cells. The system comprises at least one capacitor (C1, C2, C3) connectable to a plurality of battery cells (106) via switches (104), configured to connect or disconnect the at least one capacitor to the battery cells, a processing unit (103) configured to control the plurality of switches, and a characterizing unit (109) configured to characterize the AC impedance of the battery cells. The processing unit is configured to control the plurality of switches by applying true random or pseudo-random control signals to the plurality of switches, so that the lengths of the switching periods have a random component. The random component provides a noise signal to each battery cell for determining the AC characteristics without generating electromagnetic interference (EMI).

M3 - Patent

M1 - WO2022136220

Y2 - 2020/12/23

ER -

A switched-capacitor balancing and characterization method and system

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