Granted Patent B2

US 12,620,636 · App. 17/978,419 · Granted May 5, 2026

Inventors: Abouzede Mondoha (Stuttgart, DE); Simon Tippmann (Stuttgart, DE)

Assignee: Robert Bosch GmbH

H01M10/425B60L58/10H01M10/0445H01M10/482H01M2010/4271H01M2220/20

Abstract

Claims (40)

1 . A method for monitoring and controlling a battery pack ( 24 ) of a vehicle ( 10 ), which battery pack comprises a plurality of battery cells ( 2 ) interconnected in parallel and/or in series, the battery cells ( 2 ) each comprising a switching unit ( 40 ) which serves to connect and disconnect the respective battery cells ( 2 ) separately,

the method comprising the steps of:

acquiring, via one or more sensors, pack information of the battery pack ( 24 ), the pack information comprising at least cell voltages (V mes ), cell temperature (T mes ) of the respective battery cells ( 2 ), and a pack current (I pack,mes );

calculating a pack voltage (V pack ) of the battery pack ( 24 ) on the basis of the cell voltages (V mes ) of the respective battery cells ( 2 ) and a current activation pattern (u) for actuating the switching units ( 40 );

predicting, via a power prediction module ( 14 ), an electrical power requirement (P elec ) of the vehicle ( 10 ) based on information GPS Info acquired by a GPS module ( 12 ), wherein the information GPS Info includes a speed and location of the vehicle ( 10 );

estimating, via a state estimation module ( 60 ), the state (x s ) of the battery pack ( 24 ) based on the pack information and the current activation pattern (u);

calculating, via a control device, an optimized activation pattern (u*) for actuating the switching units ( 40 ) on the basis of the predicted electrical power requirement (P elec ) and the estimated state (x s ) of the battery pack ( 24 ); and

actuating, via the control device, the switching units ( 40 ) of the respective battery cells ( 2 ) according to the optimized activation pattern (u*) for actuating the switching units ( 40 ) for connecting and disconnecting the respective battery cells ( 2 ).

2 . The method according to claim 1 , wherein

the optimized activation pattern (u*) is calculated by means of model predictive control ( 76 ).

3 . The method according to claim 2 , wherein

the model predictive control ( 76 ) is performed based on Pareto optimization.

4 . A system ( 100 ) for monitoring and controlling a battery pack ( 24 ) of a vehicle ( 10 ), which battery pack comprises a plurality of battery cells ( 2 ) interconnected in parallel and/or in series, the battery cells ( 2 ) each comprising a switching unit ( 40 ) which serves to connect and disconnect the respective battery cells ( 2 ) separately, the system ( 100 ) comprising:

a GPS module ( 12 ) of the vehicle ( 10 ),

a power prediction module ( 14 ) configured to predict an electrical power requirement (P elec ) of the vehicle ( 10 ) on the basis of information GPS Info acquired by the GPS module ( 12 ), wherein the information GPS Info includes a speed and location of the vehicle ( 10 ),

a state estimation module ( 60 ) configured to estimate a state (x s ) of the battery pack ( 24 ) on the basis of pack information, and

a control device ( 70 ) configured to calculate an optimized activation pattern (u*) for actuating the switching units ( 40 ) on the basis of the predicted electrical power requirement (P elec ) and the estimated state (x s ) of the battery pack ( 24 ), and to actuate the switching units ( 40 ) of the respective battery cells ( 2 ) according to the optimized activation pattern (u*) for actuating the switching units ( 40 ) for connecting and disconnecting the respective battery cells ( 2 ).

5 . A battery management system for monitoring and controlling a battery system ( 20 ) of a vehicle ( 10 ), which battery system comprises at least one battery pack ( 24 ) having a plurality of battery cells ( 2 ) interconnected in parallel and/or in series, each comprising a switching unit ( 40 ) which serves to connect and disconnect the respective battery cells ( 2 ) separately, the battery management system comprising:

a power prediction module ( 14 ) configured to predict an electrical power requirement (P elec ) of the vehicle ( 10 ) based on information GPS Info acquired by the GPS module ( 12 ), wherein the information GPS Info includes a speed and location of the vehicle ( 10 ),

a state estimation module ( 60 ) configured to estimate a state (x s ) of the at least one battery pack ( 24 ), and

a control device ( 70 ) configured to calculate an optimized activation pattern (u*) for actuating the switching units ( 40 ) on the basis of the predicted electrical power requirement (P elec ) and the estimated state (x s ) of the at least one battery pack ( 24 ), and to actuate the switching units ( 40 ) of the respective battery cells ( 2 ) according to the optimized activation pattern (u*) for actuating the switching units ( 40 ) for connecting and disconnecting the respective battery cells ( 2 ).

6 . A battery system ( 20 ) of a vehicle ( 10 ), comprising at least one battery pack ( 24 ) having a plurality of battery cells ( 2 ) interconnected in parallel and/or in series, each comprising a switching unit ( 40 ) which serves to connect and disconnect the respective battery cells ( 2 ) separately,

wherein

the battery system ( 20 ) is configured to

predict an electrical power requirement (P elec ) of the vehicle ( 10 ) on the basis of information GPS Info acquired via a GPS module ( 12 ), wherein the information GPS Info includes a speed and location of the vehicle ( 10 ),

estimate a state (x s ) of the battery pack ( 24 ) on the basis of pack information, and

calculate an optimized activation pattern (u*) for actuating the switching units ( 40 ) on the basis of the predicted electrical power requirement (P elec ) and the estimated state (x s ) of the battery pack ( 24 ), and to actuate switching units ( 40 ) of the respective battery cells ( 2 ) according to the optimized activation pattern (u*) for actuating the switching units ( 40 ) for connecting and disconnecting the respective battery cells ( 2 ).

7 . The battery system ( 20 ) according to claim 6 , wherein the at least one battery pack ( 24 ) comprises one or more strings ( 26 ) of battery cells ( 2 ) which are interconnected in series within the respective strings ( 26 ).

8 . The battery system ( 20 ) according to claim 6 , wherein

the switching units ( 40 ) each comprise a first switching element ( 42 ) and a second switching element ( 44 ), the first switching element ( 42 ) and the corresponding battery cell ( 2 ) forming a series circuit ( 30 ), and the second switching element ( 44 ) being connected in parallel with the series circuit ( 30 ).

9 . The battery system ( 20 ) according to claim 8 , wherein

the first and the second switching element ( 42 , 44 ) are each designed as semiconductor switches.

10 . A vehicle ( 10 ) comprising

A battery pack having a plurality of battery cells ( 2 ) interconnected in parallel and/or in series, the battery cells ( 2 ) each comprising a switching unit ( 40 ) which serves to connect and disconnect the respective battery cells ( 2 ) separately, the vehicle configured to:

acquire, via one or more sensors, pack information of the battery pack ( 24 ), the pack information comprising at least cell voltages (V mes ), cell temperature (T mes ) of the respective battery cells ( 2 ), and a pack current (I pack, mes );

calculate a pack voltage (V pack ) of the battery pack ( 24 ) on the basis of the cell voltages (V mes ) of the respective battery cells ( 2 ) and a current activation pattern (u) for actuating the switching units ( 40 );

predict, via a power prediction module ( 14 ), an electrical power requirement (P elec ) of the vehicle ( 10 ) based on information GPS Info acquired by a GPS module ( 12 ) of the vehicle ( 10 ), wherein the information GPS Info includes a speed and location of the vehicle ( 10 );

estimate, via a state estimation module ( 60 ), the state (x s ) of the battery pack ( 24 ) based on the pack information and the current activation pattern (u);

calculate, via a control device, an optimized activation pattern (u*) for actuating the switching units ( 40 ) on the basis of the predicted electrical power requirement (P elec ) and the estimated state (x s ) of the battery pack ( 24 ); and

actuate, via the control device, the switching units ( 40 ) of the respective battery cells ( 2 ) according to the optimized activation pattern (u*) for actuating the switching units ( 40 ) for connecting and disconnecting the respective battery cells ( 2 ).

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (14)