# US 12,603,800 B2 · Terminating resistance setting circuit and battery management system including same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,603,800 B2 - Document ID: US12603800B2 - Status: Granted - Kind: B2 - Application number: 17/633,349 - Filed: 2021-01-08 - Published: 2022-09-08 - Granted: 2026-04-14 - Earliest claimed: 2020-01-20 - Assignees: LG Energy Solution, Ltd. - Applicants: LG Energy Solution, Ltd. - Inventors: Jin Seok Heo - Web page: https://patentgrep.com/patent/US12603800B2 ## CPC - H04L 12/12: Arrangements for remote connection or disconnection of substations or of equipment thereof - H04L 25/0272: {Arrangements for coupling to multiple lines, e.g. for differential transmission} - H01M 10/4207: {for several batteries or cells simultaneously or sequentially} - H01M 10/425: {Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00)} - H02J 7/40: characterised by the exchange of charge or discharge related data - H02J 7/50: acting upon multiple batteries simultaneously or sequentially - H04L 12/40045: {Details regarding the feeding of energy to the node from the bus} - H04L 25/0266: {Arrangements for providing Galvanic isolation, e.g. by means of magnetic or capacitive coupling} - 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} - H04L 12/40: Bus networks - H04L 2012/40215: {Controller Area Network CAN} - H04L 2012/40273: {the transportation system being a vehicle} - Y02D 30/50: in wire-line communication networks, e.g. low power modes or reduced link rate - Y02E 60/10: Energy storage using batteries - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract Disclosed is a terminating resistance setting circuit and a battery management system in a battery system including a plurality of battery modules, the battery management system including at least module controllers that respectively control the plurality of battery modules, in which the module controllers communicate with each other through a differential input mode, and each of a plurality of battery modules includes a terminating resistance setting circuit including a resistance generation unit connected between a pair of communication lines for differential input to generate a terminating resistance, a first control circuit that applies a first control signal to the resistance generation unit, and a second control circuit formed between the resistance generation unit and a reference potential and controlled to apply a voltage according to the reference potential to the resistance generation unit by a second control signal. ## Claims ### Claim 1 A terminating resistance setting circuit provided in each of a plurality of communication devices that perform communication in a differential input mode, the terminating resistance setting circuit comprising: a resistance generation unit connected between a pair of communication lines for differential input to generate a terminating resistance; a first control circuit that applies a first control signal to the resistance generation unit; a second control circuit formed between the resistance generation unit and a reference potential and controlled to apply a voltage according to the reference potential to the resistance generation unit by a second control signal; and a line connecting the pair of communication lines with a first terminal connected to the first control circuit and a second terminal connected to the second control circuit, wherein the first control signal is a second control signal transmitted by another communication device among the plurality of communication devices that communicates with a first communication device among the plurality of communication devices in which the terminating resistance setting circuit is formed. ### Claim 2 (depends on 1) The terminating resistance setting circuit of claim 1, wherein the resistance generation unit includes a resistor and a first switching element connected in series between the pair of communication lines. ### Claim 3 (depends on 2) The terminating resistance setting circuit of claim 2, wherein the first switching element is turned to an ON state by application of the first control signal. ### Claim 4 (depends on 3) The terminating resistance setting circuit of claim 3, wherein the first switching element is switched from the ON state to an OFF state due to application of the second control signal to the second control circuit. ### Claim 5 (depends on 1) The terminating resistance setting circuit of claim 1, wherein the second control signal is a first control signal transmitted by the first communication device among the plurality of communication devices in which the terminating resistance setting circuit is formed to a terminating resistance setting circuit installed in another communication device among the plurality of communication devices. ### Claim 6 (depends on 1) The terminating resistance setting circuit of claim 1, wherein the pair of communication lines connects to a first port and second port of the first communication device. ### Claim 7 (depends on 1) The terminating resistance setting circuit of claim 1, wherein the second control circuit includes a transistor, and wherein a port of the transistor of the second control circuit is located closer to the resistance generation unit than the first control circuit. ### Claim 8 (depends on 1) The terminating resistance setting circuit of claim 1, wherein the first control circuit only includes a resistor. ### Claim 9 (depends on 1) The terminating resistance setting circuit of claim 1, wherein the first control circuit includes less resistors than the resistance generation unit.