# US 2023/0411706 A1 · Battery system comprising a battery management system and a motor vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0411706 A1 - Document ID: US20230411706A1 - Status: Published application - Kind: A1 - Application number: 18/199,657 - Filed: 2023-05-19 - Published: 2023-12-21 - Earliest claimed: 2022-05-19 - Assignees: Webasto SE - Applicants: Webasto SE - Inventors: Julian Nowroth; Christian Ziegler; Christian Seidel; Maximilian Bushe; Marc Hartmeyer - Web page: https://patentgrep.com/patent/US20230411706A1 ## CPC - B60L 58/18: of two or more battery modules - H01M 10/425: {Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00)} - B60L 58/21: having the same nominal voltage - H01M 10/482: {for several batteries or cells simultaneously or sequentially} - H01M 50/204: Racks, modules or packs for multiple batteries or multiple cells - H01M 50/249: specially adapted for aircraft or vehicles, e.g. cars or trains (constructional details of batteries specially adapted for electric vehicles B60L50/64) - H01M 50/296: characterised by terminals of battery packs (terminals of batteries H01M50/543) - B60L 50/64: Constructional details of batteries specially adapted for electric vehicles - B60L 58/10: for monitoring or controlling batteries - H01M 2010/4271: {Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing} - H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane - Y02E 60/10: Energy storage using batteries - B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract The present invention relates to a battery system for a motor vehicle, comprising a battery management system and at least two battery packs each having battery cells, at least one switch for switching the respective battery pack and a measuring device for measuring operating parameters of the battery cells, where the battery management system is arranged in precisely one of the battery packs and the switches of the other battery packs are controlled by the battery management system. ## Claims ### Claim at position 1 1: A Battery system, comprising a battery management system and at least two battery packs each having battery cells, at least one switch for switching the respective battery pack and a measuring device for measuring operating parameters of the battery cells wherein the battery management system is arranged in precisely one of the battery packs and the switches of the other battery packs are controlled by the battery management system. ### Claim at position 2 (depends on 1) 2: The Battery system according to claim 1, wherein the battery management system is configured to directly measure operating parameters of the battery cells by means of the measuring devices. ### Claim at position 3 (depends on 2) 3: The Battery system according to claim 2, wherein the battery management system is directly connected to at least one of: the measuring devices and the switches (9) by means of a signal line for at least one of: transmitting a signal and receiving a signal. ### Claim at position 4 (depends on 3) 4: The Battery system according to claim 3, wherein the respective battery packs are spatially separated. ### Claim at position 5 (depends on 4) 5: The Battery system according to claim 4, wherein the battery management system is configured to evaluate an operating state of the battery cells. ### Claim at position 6 (depends on 5) 6: The Battery system according to claim 5, wherein the battery management system is configured to change a switching state of the respective battery pack with respect to a switching arrangement by means of the respective switch. ### Claim at position 7 (depends on 6) 7: The Battery system according to claim 6, wherein the battery management system is configured to balance the battery system via the switching arrangement by controlling the switch. ### Claim at position 8 (depends on 7) 8: The Battery system according to claim 7, wherein a common electrical connection for connecting all battery packs to at least one of: a charging apparatus and an electrical load is provided. ### Claim at position 9 (depends on 8) 9: The Battery system according to claim 8, wherein the battery management system is configured to connect a pre-charging circuit upstream of the battery system. ### Claim at position 10 10: A Motor vehicle comprising a spatially distributed battery system wherein the spatially distributed battery system comprises: a battery management system; at least two battery packs each having battery cells; at least one switch for switching the respective battery pack; and a measuring device for measuring operating parameters of the battery cells; wherein the battery management system is arranged in precisely one of the battery packs and the switches of the other battery packs are controlled by the battery management system. ### Claim at position 11 (depends on 1) 11: The Battery system of claim 1, wherein the battery system is for a motor vehicle. ### Claim at position 12 (depends on 4) 12: The Battery system according to claim 4, wherein the respective battery packs are spatially distributed. ### Claim at position 13 (depends on 5) 13: The Battery system according to claim 5, wherein the battery management system is configured to evaluate an operating state of the battery system. ### Claim at position 14 (depends on 6) 14: The Battery system according to claim 6, wherein the battery management system is configured to change a switching state of the respective battery pack with respect to a switching arrangement to at least one of: electrically connect the respective battery pack to the switching arrangement and to disconnect the respective battery pack from the switching arrangement. ### Claim at position 15 (depends on 8) 15: The Battery system according to claim 8, wherein the common electrical connection is at least one of: a terminal and a connector. ### Claim at position 16 (depends on 9) 16: The Battery system according to claim 9, wherein the pre-charging circuit upstream of the battery system is the respective battery pack, by means of the switch.