# US 11,079,438 B2 · Circuitry for monitoring battery systems > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,079,438 B2 - Document ID: US11079438B2 - Status: Granted - Kind: B2 - Application number: 16/502,890 - Filed: 2019-07-03 - Published: 2020-01-09 - Granted: 2021-08-03 - Earliest claimed: 2018-07-04 - Assignees: Volkswagen Aktiengesellchaft - Applicants: Volkswagen Aktiengesellschaft - Inventors: Jochen Juhl - Web page: https://patentgrep.com/patent/US11079438B2 ## CPC - G01R 31/371: with remote indication, e.g. on external chargers - H04Q 9/00: Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom - G01R 31/367: Software therefor, e.g. for battery testing using modelling or look-up tables - H01M 10/425: {Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00)} - B60K 6/28: characterised by the electric energy storing means, e.g. batteries or capacitors - B60L 58/10: for monitoring or controlling batteries - B60Y 2200/91: Electric vehicles - B60Y 2200/92: Hybrid vehicles - 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 2010/4278: {Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller} - H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane - Y02E 60/10: Energy storage using batteries - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - Y02T 90/16: Information or communication technologies improving the operation of electric vehicles - G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12) - H04Q: SELECTING (switches, relays, selectors H01H; wireless communication networks H04W) - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES - 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 - B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A circuitry for a battery management system of a vehicle for adapting at least one cell information item via at least one battery cell to a communication system of the vehicle, comprising: a first processing element for generating a message and a test information item in accordance with a first processing, the message being specific to the cell information; at least one second processing element for generating the same message (in accordance with at least one second processing; a communication system interface (for outputting an output instruction to the communication system, the output instruction being at least partially composed of the message in accordance with the second processing and of the test information, so that the output instruction is specific to the first and second processing. ## Claims ### Claim 1 A circuitry for a battery management system of a vehicle for adapting at least one cell information item via at least one battery cell to a communication system of the vehicle, the circuitry comprising: a first processor configured to: generate a first message in accordance with a first processing of cell information, generate a test information item from the first message; and at least one second processor configured to: redundantly generate a second message from the cell information in accordance with at least one second processing, receive the test information from the first processor, and generate an output instruction to the communication system, the output instruction being at least partially composed of the second message in accordance with the second processing and of the test information generated by the first processor, so that the output instruction is specific to the first and second processing. ### Claim 2 A circuitry for a battery management system of a vehicle for adapting at least one cell information item via at least one battery cell to a communication system of the vehicle, the circuitry comprising: a first processing element for generating a message and a test information item in accordance with a first processing, the message being specific to the cell information; at least one second processing element for generating the same message in accordance with at least one second processing, wherein the first processing element is designed for generating the test information as a test value for the message on the basis of the message in accordance with the first processing, so that the test value is also executed for checking the message in accordance with the second processing; and a communication system interface for outputting an output instruction to the communication system, the output instruction being at least partially composed of the message in accordance with the second processing and of the test information, so that the output instruction is specific to the first and second processing. ### Claim 3 (depends on 1) The circuitry as recited in claim 1, wherein the output instruction, the first message and/or the second message are/is adapted to a transmission via the communication system by the output instruction forming a complete or partial data packet for the communication system, the data packet also including the test information in order for the communication system and/or the at least one communication node to check the correctness of the message in accordance with the second processing and/or the data packet. ### Claim 4 (depends on 1) The circuitry as recited claim 1, wherein, as an interface for a CAN bus system, the communication system interface is designed as the communication system, the data packet being in the form of a telegram of the CAN bus. ### Claim 5 (depends on 1) The circuitry as recited in claim 1, wherein the first and second processors are designed to be structurally and/or functionally the same as or similar to integrated circuits, so that the message is redundantly generated in accordance with the first and second processing. ### Claim 6 (depends on 5) The circuitry as recited in claim 5, wherein the integrated circuits are microcontrollers. ### Claim 7 (depends on 1) The circuitry as recited in claim 1, wherein the first processor is connected to the second processor in order to transfer the test information to the second processor to integrate the test information into the output instruction. ### Claim 8 (depends on 1) The circuitry as recited in claim 1, wherein both the first processor and the second processor are connected to a transmitting means in order to receive a signal containing the cell information for the processors, independently of one another, to generate the message (on the basis of the cell information. ### Claim 9 (depends on 1) The circuitry as recited in claim 1, further comprising a safety mechanism to reject the output instruction if, upon checking of the message, an error of at least one of the parts of the output instruction is detected on the basis of the test information. ### Claim 10 A method for adapting at least one cell information item via at least one battery cell to a communication system of a vehicle, the method comprising following steps: generating, by a first processing element, a message and a test information item in accordance with a first processing, the message being specific to the cell information; generating, by at least a second processing element, the same message in accordance with at least a second processing; outputting, by a communication system interface, an output instruction to the communication system, the output instruction being at least partially composed of the message in accordance with the second processing and of the test information, so that the output instruction is specific to the first and second processing. ### Claim 11 (depends on 10) The method as recited in claim 10, wherein the first processing includes generating the test information as a CRC test value in accordance with a cyclic redundancy check.