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1. (WO2018127296) A METHOD AND ARRANGEMENT FOR DETERMINING THE STATE OF CHARGE OF A BATTERY PACK
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Pub. No.: WO/2018/127296 International Application No.: PCT/EP2017/050338
Publication Date: 12.07.2018 International Filing Date: 09.01.2017
IPC:
B60L 3/12 (2006.01) ,B60L 11/18 (2006.01) ,G01R 31/36 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
L
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
3
Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration, power consumption
12
Recording operating variables
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
L
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
11
Electric propulsion with power supplied within the vehicle
18
using power supplied from primary cells, secondary cells, or fuel cells
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31
Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
36
Apparatus for testing electrical condition of accumulators or electric batteries, e.g. capacity or charge condition
Applicants:
VOLVO TRUCK CORPORATION [SE/SE]; 405 08 Göteborg, SE
Inventors:
GELSO, Esteban; SE
BRYNGELSSON, Hanna; SE
Agent:
EKLUND, Linus; Volvo Technology Corporation Volvo Group Intellectual Property BF14100, M1.7 405 08 Göteborg, SE
Priority Data:
Title (EN) A METHOD AND ARRANGEMENT FOR DETERMINING THE STATE OF CHARGE OF A BATTERY PACK
(FR) PROCÉDÉ ET AGENCEMENT DE DÉTERMINATION DE L'ÉTAT DE CHARGE D'UN BLOC-BATTERIE
Abstract:
(EN) The invention relates to a method for determining the state of charge (SOC) of a chargeable battery pack (5) comprising at least one battery cell (5a, 5b, 5c), said method comprising the steps of: providing an initial state of charge value (SOC1) for said battery pack (5); estimating a battery cell voltage value (Vest) using a cell model (7b) based on input values representing at least a measured voltage (Vmeas) of said battery pack (5); comparing said estimated battery cell voltage value (Vest) with said measured battery cell voltage value (Vmeas) for said at least one battery cell (5a, 5b, 5c); and determining an estimated state of charge value (SOCest) to update the state of charge (SOC) from the initial state of charge value (SOC1), based on said comparing step and by using an observer module (7a). According to the invention, the observer module (7a) comprises an influence factor, said influence factor representing errors in the state of charge (SOC) based on the parameterization of said cell model (7b). The invention also relates to an arrangement for determining the state of charge (SOC) of a battery pack (5).
(FR) L'invention concerne un procédé de détermination de l'état de charge (SOC) d'un bloc-batterie rechargeable (5) comprenant au moins une pile (5a, 5b, 5c), ledit procédé comprenant les étapes suivantes : la fourniture d'un état initial de valeur de charge (SOC1) pour ledit bloc-batterie (5) ; l'estimation d'une valeur de tension de pile (Vest) au moyen d'un modèle de pile (7b) sur la base de valeurs d'entrée représentant au moins une tension mesurée (Vmeas) dudit bloc-batterie (5) ; la comparaison de ladite valeur de tension de pile estimée (Vest) à ladite valeur de tension de pile mesurée (Vmeas) pour ladite pile (5a, 5b, 5c) ; la détermination d'un état estimé de valeur de charge (SOCest) pour mettre à jour l'état de charge (SOC) à partir de l'état initial de valeur de charge (SOC1), sur la base de ladite étape de comparaison et au moyen d'un module d'observation (7a). Selon l'invention, le module d'observation (7a) comprend un facteur d'influence, ledit facteur d'influence représentant des erreurs dans l'état de charge (SOC) sur la base du paramétrage dudit modèle de pile (7b). L'invention concerne également un agencement permettant de déterminer l'état de charge (SOC) d'un bloc-batterie (5).
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)