# US 11,909,014 B2 · High voltage battery rack > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,909,014 B2 - Document ID: US11909014B2 - Status: Granted - Kind: B2 - Application number: 17/686,985 - Filed: 2022-03-04 - Published: 2022-06-16 - Granted: 2024-02-20 - Earliest claimed: 2018-04-26 - Assignees: SK On Co., Ltd. - Applicants: SK Innovation Co., Ltd. - Inventors: Dae Won Kwon; Yong Uk Kim - Web page: https://patentgrep.com/patent/US11909014B2 ## CPC - H01M 10/48: Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte (constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569) - H01M 10/425: {Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00)} - H01M 50/209: adapted for prismatic or rectangular cells (H01M50/216 takes precedence) - H01M 50/296: characterised by terminals of battery packs (terminals of batteries H01M50/543) - H01M 50/503: characterised by the shape of the interconnectors - H01M 50/581: in response to temperature - H01M 50/583: in response to current, e.g. fuses - 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 2200/103: Fuse - H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane - Y02E 60/10: Energy storage using batteries - 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 provides a high voltage battery rack, including: a plurality of battery modules electrically connected with each other; and a rack controller configured to control the plurality of battery modules, wherein each of the plurality of battery modules comprises: external terminals; and an MSD module configured to determine whether a voltage is applied to the external terminals during operation. ## Claims ### Claim 1 A battery module, comprising: a plurality of battery cells stacked on each other; a cell connection unit electrically connecting the plurality of battery cells with each other; a rear cover member covering at least a portion of the cell connection unit; and a fusing bus bar cover, wherein the cell connection unit includes a fusing bus bar, the fusing bus bar having a rupture part, wherein the fusing bus bar cover is disposed between the fusing bus bar and the rear cover member, wherein the rear cover member includes an opening part facing the rupture part, wherein the fusing bus bar cover includes a protrusion facing the rupture part, the protrusion being inserted into the opening part, and wherein the protrusion is transparent. ### Claim 2 (depends on 1) The battery module according to claim 1, wherein the rupture part is visible through the opening part. ### Claim 3 (depends on 1) The battery module according to claim 1, further comprising a cell cover member disposed between the fusing bus bar and the plurality of battery cells. ### Claim 4 (depends on 1) The battery module according to claim 1, wherein the fusing bus bar cover is made of an insulation material. ### Claim 5 (depends on 1) The battery module according to claim 1, wherein at least a portion of the fusing bus bar cover is transparent. ### Claim 6 (depends on 1) The battery module according to claim 1, wherein the rupture part includes an opening formed in at least a portion thereof. ### Claim 7 A high voltage battery rack, comprising: a plurality of battery modules electrically connected with each other, wherein each of the plurality of battery modules comprises: external terminals; and an MSD (Manual Service Device) module having a switch, a plurality of battery cells stacked on each other; a cell connection unit electrically connecting the plurality of battery cells with each other; a rear cover member covering at least a portion of the cell connection unit; and a fusing bus bar cover, wherein the cell connection unit includes a fusing bus bar, the fusing bus bar having a rupture part, wherein the fusing bus bar cover is disposed between the fusing bus bar and the rear cover member, wherein the rear cover member includes an opening part facing the rupture part, wherein one end of the MSD module is connected to the plurality of battery modules and another end of the MSD module is connected to one of the external terminals, wherein the fusing bus bar cover includes a protrusion facing the rupture part, the protrusion being inserted into the opening part, and wherein the protrusion is transparent. ### Claim 8 (depends on 7) The high voltage battery rack according to claim 7, wherein the rupture part is visible through the opening part. ### Claim 9 (depends on 7) The high voltage battery rack according to claim 7, wherein each of the plurality of battery modules includes a cell cover member disposed between the fusing bus bar and the plurality of battery cells. ### Claim 10 (depends on 7) The high voltage battery rack according to claim 7, wherein the fusing bus bar cover is made of an insulation material. ### Claim 11 (depends on 7) The high voltage battery rack according to claim 7, wherein at least a portion of the fusing bus bar cover is transparent. ### Claim 12 (depends on 7) The high voltage battery rack according to claim 7, wherein the rupture part includes an opening formed in at least a portion thereof.