# US 10,873,063 B2 · Battery > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,873,063 B2 - Document ID: US10873063B2 - Status: Granted - Kind: B2 - Application number: 16/061,983 - Filed: 2015-12-16 - Published: 2018-12-27 - Granted: 2020-12-22 - Earliest claimed: 2015-12-16 - Assignees: Eliiy Power Co., Ltd. - Applicants: ELIIY Power Co., Ltd. - Inventors: Hideyuki Sugiyama; Hiroshi Sato; Takeshi Sawada; Kazutoshi Miyauchi - Web page: https://patentgrep.com/patent/US10873063B2 ## 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 50/211: adapted for pouch cells - H01M 50/213: adapted for cells having curved cross-section, e.g. round or elliptic (H01M50/209, H01M50/216 take precedence) - H01M 50/271: Lids or covers for the racks or secondary casings - H01M 50/284: with incorporated circuit boards, e.g. printed circuit boards [PCB] - H01M 50/296: characterised by terminals of battery packs (terminals of batteries H01M50/543) - 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 2220/10: Batteries in stationary systems, e.g. emergency power source in plant - 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 is conceived in such a way as to prevent any damage to the battery management unit even if the solution leaks out of the cell, providing the battery with high safety. The battery according to the present invention is characterized by being provided with a cell, a battery management unit for managing the cell, a protection case holding the battery management unit, and a housing containing the cell and the protection case, wherein the protection case inside is hermetically sealed. ## Claims ### Claim 1 A battery comprising a cell, a battery management unit for managing the cell, a protection case holding the battery management unit, a housing containing the cell and the protection case, an external connection terminal connected electrically to the cell, and a fuse or a relay, and a wiring board having a wiring that electrically connects the cell to the battery management unit, wherein the protection case inside is hermetically sealed, the protection case is provided with lead connection terminals that lead from the inside of the protection case to the outside, at least one of the lead connection terminals electrically connects the battery management unit to the cell, the fuse or the relay is placed at a pathway for electrically connecting the cell to the external connection terminal, the battery management unit is configured to output a signal to shut off the electric connection between the cell and the external connection terminal with use of the fuse or the relay once the battery management unit detects an overcharge of the cell, the housing comprises a lid and a container for containing the cell, the wiring board is situated between the cell contained in the container and the lid, and the protection case is situated between the wiring board and the lid. ### Claim 2 A battery comprising a cell, a battery management unit for managing the cell, a protection case holding the battery management unit, a housing containing the cell and the protection case, an external connection terminal connected electrically to the cell, and a wiring board having a wiring that electrically connects the cell to the battery management unit, wherein the protection case inside is hermetically sealed, the protection case is provided with lead connection terminals that lead from the inside of the protection case to the outside, at least one of the lead connection terminals electrically connects the battery management unit to the cell, the battery management unit has a fuse or a relay placed at a pathway for electrically connecting the cell to the external connection terminal, at least one of the lead connection terminals electrically connects the external connection terminal to the fuse or the relay, the housing comprises a lid and a container for containing the cell, the wiring board is situated between the cell contained in the container and the lid, and the protection case is situated between the wiring board and the lid. ### Claim 3 (depends on 1) The battery according to claim 1, wherein a part of the wiring board is a part of the housing. ### Claim 4 (depends on 1) The battery according to claim 1, wherein the wiring board is provided with a cell-side wiring terminal and a slit that penetrates the wiring board, the cell is provided with a cell terminal, the cell terminal passes through the slit and is coupled to the cell-side wiring terminal. ### Claim 5 (depends on 1) The battery according to claim 1, further comprising a sealing material provided between the protection case and the lid, wherein the protection case is hermetically sealed with the sealing material. ### Claim 6 (depends on 1) The battery according to claim 1, wherein the housing houses cells including the cell, and the cells are connected in series or in parallel. ### Claim 7 (depends on 6) The battery according to claim 6, wherein the battery management unit is configured to measure an electric voltage of each cell. ### Claim 8 (depends on 7) The battery according to claim 7, wherein the housing has a sealed structure. ### Claim 9 (depends on 2) The battery according to claim 2, wherein a part of the wiring board is a part of the housing. ### Claim 10 (depends on 2) The battery according to claim 2, wherein the wiring board is provided with a cell-side wiring terminal and a slit that penetrates the wiring board, the cell is provided with a cell terminal, the cell terminal passes through the slit and is coupled to the cell-side wiring terminal. ### Claim 11 (depends on 3) The battery according to claim 3, wherein the wiring board is provided with a cell-side wiring terminal and a slit that penetrates the wiring board, the cell is provided with a cell terminal, the cell terminal passes through the slit and is coupled to the cell-side wiring terminal. ### Claim 12 (depends on 9) The battery according to claim 9, wherein the wiring board is provided with a cell-side wiring terminal and a slit that penetrates the wiring board, the cell is provided with a cell terminal, the cell terminal passes through the slit and is coupled to the cell-side wiring terminal. ### Claim 13 (depends on 2) The battery according to claim 2, further comprising a sealing material provided between the protection case and the lid, wherein the protection case is hermetically sealed with the sealing material. ### Claim 14 (depends on 3) The battery according to claim 3, further comprising a sealing material provided between the protection case and the lid, wherein the protection case is hermetically sealed with the sealing material. ### Claim 15 (depends on 9) The battery according to claim 9, further comprising a sealing material provided between the protection case and the lid, wherein the protection case is hermetically sealed with the sealing material. ### Claim 16 (depends on 4) The battery according to claim 4, further comprising a sealing material provided between the protection case and the lid, wherein the protection case is hermetically sealed with the sealing material. ### Claim 17 (depends on 10) The battery according to claim 10, further comprising a sealing material provided between the protection case and the lid, wherein the protection case is hermetically sealed with the sealing material. ### Claim 18 (depends on 11) The battery according to claim 11, further comprising a sealing material provided between the protection case and the lid, wherein the protection case is hermetically sealed with the sealing material. ### Claim 19 (depends on 12) The battery according to claim 12, further comprising a sealing material provided between the protection case and the lid, wherein the protection case is hermetically sealed with the sealing material. ### Claim 20 (depends on 2) The battery according to claim 2, wherein the housing houses cells including the cell, and the cells are connected in series or in parallel. ### Claim 21 (depends on 20) The battery according to claim 20, wherein the battery management unit is configured to measure an electric voltage of each cell. ### Claim 22 (depends on 21) The battery according to claim 21, wherein the housing has a sealed structure.