# US 10,483,515 B2 · Power storage device, power storage system, electronic device, electric vehicle, and power system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,483,515 B2 - Document ID: US10483515B2 - Status: Granted - Kind: B2 - Application number: 15/111,215 - Filed: 2015-01-22 - Published: 2016-11-17 - Granted: 2019-11-19 - Earliest claimed: 2014-01-23 - Assignees: Murata Manufacturing Co., Ltd. - Applicants: Sony Corporation - Inventors: Naotake Yoshida; Hiroaki Ono; Tsutomu Aoyama; Tatsuya Adachi; Naoyuki Sugeno; Munenori Inden - Web page: https://patentgrep.com/patent/US10483515B2 ## CPC - H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries - B60L 3/0046: {relating to electric energy storage systems, e.g. batteries or capacitors} - B60L 50/64: Constructional details of batteries specially adapted for electric vehicles - B60L 50/66: {Arrangements of batteries} - B60L 53/00: Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles - B60L 53/56: Mechanical storage means, e.g. fly wheels - B60L 58/14: Preventing excessive discharging - B60L 58/26: by cooling - B60L 58/27: by heating - H01M 10/4257: {Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries} - H01M 10/46: Accumulators structurally combined with charging apparatus (circuits for charging H02J7/00) - H01M 10/482: {for several batteries or cells simultaneously or sequentially} - H01M 10/486: {for measuring temperature} - H01M 10/6553: Terminals or leads - H01M 50/213: adapted for cells having curved cross-section, e.g. round or elliptic (H01M50/209, H01M50/216 take precedence) - H01M 50/296: characterised by terminals of battery packs (terminals of batteries H01M50/543) - H01M 50/512: Connection only in parallel - H01M 50/581: in response to temperature - H02J 7/04: Regulation of charging current or voltage - H02J 7/575: {Parallel/serial switching of connection of batteries to charge or load circuit} - H02J 7/977: {of the battery} - B60L 2240/545: Temperature - H01M 10/0422: {Cells or battery with cylindrical casing} - H01M 10/625: Vehicles - H01M 50/224: Metals - 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 - H01M 2220/30: Batteries in portable systems, e.g. mobile phone, laptop - H01R 11/288: {Interconnections between batteries} - Y02E 60/10: Energy storage using batteries - Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - Y02T 10/7072: Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors - Y02T 90/12: Electric charging stations - Y02T 90/14: Plug-in electric vehicles - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - 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 - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract There is provided a power storage system comprising a plurality of battery lines and a connection terminal unit. Each battery line comprises a plurality of battery cells arranged in a first direction. The connection terminal unit is electrically connected to terminal faces of each battery cell of a group of the battery cells, and the group of the battery cells is disposed in a second direction. At least one cut out is formed in the connection terminal unit. There are also provided a power storage system for a house, a power storage system for a vehicle, an electronic device and an electric vehicle including the power storage device. There is also provided a connection terminal unit for electrically connecting a plurality of battery cells, in which at least one cut out is formed in the connection terminal unit. ## Claims ### Claim 1 A power storage device, comprising: a plurality of battery block groups, wherein each of the plurality of battery block groups comprising a plurality of battery blocks, wherein each of the plurality of battery blocks comprising a plurality of battery cells, wherein the plurality of battery cells in each of the plurality of battery blocks are arranged in a first direction, wherein the plurality of battery blocks in each of the plurality of battery block groups are arranged in a second direction orthogonal to the first direction, wherein the plurality of battery cells in each of the plurality of battery blocks is in a corresponding straight line, and wherein the plurality of battery cells in each of the plurality of battery blocks are interconnected in parallel; and a connection terminal electrically connected to terminal faces of the plurality of battery cells of a first battery block of the plurality of battery blocks, wherein adjacent battery blocks of the plurality of battery blocks are in a straw bag arrangement, wherein a first cut out is formed from an edge of the connection terminal in a third direction perpendicular to a longitudinal direction of the connection terminal, wherein at least one second cut out is connected to the first cut out and is extended along the longitudinal direction of the connection terminal, wherein the longitudinal direction of the connection terminal is substantially same as the first direction, and wherein a position of the first cut out corresponds to a boundary between adjacent battery cells of the plurality of battery cells connected in parallel. ### Claim 2 (depends on 1) The power storage device according to claim 1, wherein the connection terminal comprises a notch in a position that overlaps a space corresponding to at least one battery cell of the plurality of battery cells. ### Claim 3 (depends on 1) The power storage device according to claim 1, wherein the connection terminal is electrically connected to the terminal faces of battery cells included in two adjacent battery blocks of the plurality of battery blocks. ### Claim 4 (depends on 1) The power storage device according to claim 1, wherein the connection terminal is a plate-like body. ### Claim 5 (depends on 1) The power storage device according to claim 1, wherein the connection terminal comprises a plurality of holes. ### Claim 6 (depends on 1) The power storage device according to claim 1, wherein a shape of the first cut out is at least one selected from the group consisting of a rectangular shape, a curved shape, and a wavy shape. ### Claim 7 (depends on 1) The power storage device according to claim 1, wherein the connection terminal further includes a plurality of the second cut outs formed at intervals along the longitudinal direction of the connection terminal. ### Claim 8 (depends on 7) The power storage device according to claim 7, wherein an electrical resistance Rt of a fusing unit which is a region between the plurality of second cut outs satisfies Mathematical Formula 1 below: [ Mathematical ⁢ ⁢ Formula ⁢ ⁢ 1 ] T 1 - T C R θ ⁢ I 1 2 ( 1 - e - t 1 CR θ ) ≦ R t ≦ Δ ⁢ ⁢ T 0 R θ ⁢ I 0 2 , ( 1 ) wherein T1 is a melting point in degrees Kelvin of the fusing unit, wherein TC is a temperature in degrees Kelvin of an environment in which the power storage device is used, wherein I1 is a short-circuit current in Amperes flowing at a time of short-circuit of battery cells of at least one battery block of the plurality of battery blocks, wherein C is a thermal capacity in Joules per degree Kelvin of the fusing unit, wherein t1 is a fusing time in seconds of the fusing unit in a case where the short-circuit current has flown, wherein t1=1 second, wherein Rθ is a thermal resistance in degrees Kelvin per Watts of the fusing unit and Rθ=(1/λ)×(L/S), wherein λ is a thermal conductivity in Watts per meter of a heat transfer unit in the connection terminal, wherein L is a length in meters of the heat transfer unit, wherein S is a cross-sectional area in square meters of the heat transfer unit, wherein the electrical resistance Rt of the fusing unit is in ohms and the electrical resistance Rt=(1/σ)×(L′/S′), wherein σ is an electric conductivity [1/Ω·m] of the fusing unit, wherein L′ is a length of the fusing unit in meters, wherein S′ is a cross-sectional area of the fusing unit in square meters, wherein I0 is a maximum current, in Amperes, of the power storage device, and wherein ΔT0 is an upper limit of temperature rise of the connection terminal in degrees Kelvin. ### Claim 9 A power storage device, comprising: a plurality of battery blocks each including a plurality of battery cells arranged in a first direction, wherein the first direction is a longitudinal direction of the plurality of battery blocks; a battery block group obtained by arranging the plurality of battery blocks in parallel in a second direction substantially perpendicular to the first direction, wherein the plurality of battery cells in each of the plurality of battery blocks is in a corresponding straight line, and wherein the plurality of battery cells in each of the plurality of battery blocks are interconnected in parallel; and a connection terminal joined to terminal faces of the plurality of battery cells included in at least one of the plurality of battery blocks, the connection terminal disposed to be parallel to the first direction of the plurality of battery blocks, wherein the connection terminal includes a fusing unit to be fused in a fusing time t1 to intercept a maximum current I0, and wherein an electrical resistance Rt of the fusing unit satisfies Mathematical Formula 1: [ mathematical ⁢ ⁢ formula ⁢ ⁢ 1 ] T 1 - T C R θ ⁢ I 1 2 ( 1 - e - t 1 CR θ ) ≦ R t ≦ Δ ⁢ ⁢ T 0 R θ ⁢ I 0 2 , ( 1 ) wherein T1 is a melting point in degrees Kelvin of the fusing unit, wherein TC is a temperature in degrees Kelvin of an environment in which the power storage device is used, wherein I1 is a short-circuit current in Amperes flowing at a time of short-circuit of at least one battery block of the plurality of battery blocks, wherein C is a thermal capacity in Joules per degree Kelvin of the fusing unit, wherein t1 is the fusing time in seconds of the fusing unit in case where the short-circuit current has flown, wherein t1=1 second, wherein Rθ is a thermal resistance in degrees Kelvin per Watts of the fusing unit and Rθ=(1/λ)×(L/S), wherein A is a thermal conductivity in Watts per meters of a heat transfer unit in the connection terminal, wherein L is a length in meters of the heat transfer unit, wherein S is a cross-sectional area in square meters of the heat transfer unit, wherein the electrical resistance Rt of the fusing unit is in ohms and the electrical resistance Rt=(1/σ)×(L′/S′), wherein σ is an electric conductivity [1/Ω·m] of the fusing unit, wherein L′ is a length in meters of the fusing unit, wherein S′ is a cross-sectional area in square meters of the fusing unit, wherein I0 is the maximum current, in Amperes, of the power storage device, and wherein ΔT0 is an upper limit of temperature rise of the connection terminal in degrees Kelvin. ### Claim 10 A power storage system, comprising: a power generation device configured to generate power from renewable energy; and a power storage device, comprising: a plurality of battery block groups, wherein each of the plurality of battery block groups comprising a plurality of battery blocks, wherein each of the plurality of battery blocks comprising a plurality of battery cells, wherein the plurality of battery cells in each of the plurality of battery blocks are arranged in a first direction, wherein the plurality of battery blocks in each of the plurality of battery block groups are arranged in a second direction orthogonal to the first direction, wherein the plurality of battery cells in each of the plurality of battery blocks is in a corresponding straight line, and wherein the plurality of battery cells in each of the plurality of battery blocks are interconnected in parallel; and a connection terminal electrically connected to terminal faces of the plurality of battery cells of a first battery block of the plurality of battery blocks, wherein adjacent battery blocks of the plurality of battery blocks are in a straw bag arrangement, wherein a first cut out is formed from an edge of the connection terminal in a third direction perpendicular to a longitudinal direction of the connection terminal, wherein at least one second cut out is connected to the first cut out and is extended along the longitudinal direction of the connection terminal, wherein the longitudinal direction of the connection terminal is substantially same as the first direction, wherein a position of the first cut out corresponds to a boundary between adjacent battery cells of the plurality of battery cells connected in parallel, and wherein the power storage device is charged by the power generation device. ### Claim 11 A power storage system, comprising: a power storage device, comprising: a plurality of battery block groups, wherein each of the plurality of battery block groups comprising a plurality of battery blocks, wherein each of the plurality of battery blocks comprising a plurality of battery cells, wherein the plurality of battery cells in each of the plurality of battery blocks are arranged in a first direction, wherein the plurality of battery blocks in each of the plurality of battery block groups are arranged in a second direction orthogonal to the first direction, wherein the plurality of battery cells in each of the plurality of battery blocks is in a corresponding straight line, and wherein the plurality of battery cells in each of the plurality of battery blocks are interconnected in parallel; and a connection terminal electrically connected to terminal faces of the plurality of battery cells of a first battery block of the plurality of battery blocks, wherein adjacent battery blocks of the plurality of battery blocks are in a straw bag arrangement, wherein a first cut out is formed from an edge of the connection terminal in a third direction perpendicular to a longitudinal direction of the connection terminal, wherein at least one second cut out is connected to the first cut out and is extended along the longitudinal direction of the connection terminal, wherein the longitudinal direction of the connection terminal is substantially same as the first direction, and wherein a position of the first cut out corresponds to a boundary between adjacent battery cells of the plurality of battery cells connected in parallel; and at least one electronic device connected to the power storage device, wherein the power storage device is configured to supply power to the at least one electronic device. ### Claim 12 A power storage system, comprising: an electric power system; a power generation device; a control device; and a power storage device, comprising: a plurality of battery block groups, wherein each of the plurality of battery block groups comprising a plurality of battery blocks, wherein each of the plurality of battery blocks comprising a plurality of battery cells, wherein the plurality of battery cells in each of the plurality of battery blocks are arranged in a first direction, wherein the plurality of battery blocks in each of the plurality of battery block groups are arranged in a second direction orthogonal to the first direction, wherein the plurality of battery cells in each of the plurality of battery blocks is in a corresponding straight line, and wherein the plurality of battery cells in each of the plurality of battery blocks are interconnected in parallel; and a connection terminal electrically connected to terminal faces of the plurality of battery cells of a first battery block of the plurality of battery blocks, wherein adjacent battery blocks of the plurality of battery blocks are in a straw bag arrangement, wherein a first cut out is formed from an edge of the connection terminal in a third direction perpendicular to a longitudinal direction of the connection terminal, wherein at least one second cut out is connected to the first cut out and is extended along the longitudinal direction of the connection terminal, wherein the longitudinal direction of the connection terminal is substantially same as the first direction, and wherein a position of the first cut out corresponds to a boundary between adjacent battery cells of the plurality of battery cells connected in parallel, wherein a power network system is configured to supply power to the power storage device from the electric power system, wherein the power generation device is configured to supply power to the power storage device and a power consumption device, and wherein the control device is configured to control an amount of power supplied to the power storage device from the electric power system and the power generation device. ### Claim 13 A power storage system, comprising: an engine; an electric generator; a power driving force conversion device; a driving wheel; and a power storage device, comprising: a plurality of battery block groups, wherein each of the plurality of battery block groups comprising a plurality of battery blocks, wherein each of the plurality of battery blocks comprising a plurality of battery cells, wherein the plurality of battery cells in each of the plurality of battery blocks are arranged in a first direction, wherein the plurality of battery blocks in each of the plurality of battery block groups are arranged in a second direction orthogonal to the first direction, wherein the plurality of battery cells in each of the plurality of battery blocks is in a corresponding straight line, and wherein the plurality of battery cells in each of the plurality of battery blocks are interconnected in parallel; and a connection terminal electrically connected to terminal faces of the plurality of battery cells of a first battery block of the plurality of battery blocks, wherein adjacent battery blocks of the plurality of battery blocks are in a straw bag arrangement, wherein a first cut out is formed from an edge of the connection terminal in a third direction perpendicular to a longitudinal direction of the connection terminal, wherein at least one second cut out is connected to the first cut out and is extended along the longitudinal direction of the connection terminal, wherein the longitudinal direction of the connection terminal is substantially same as the first direction, and wherein a position of the first cut out corresponds to a boundary between adjacent battery cells of the plurality of battery cells connected in parallel, wherein the power driving force conversion device is activated by power from the power storage device, wherein a rotating force of the power driving force conversion device is transmitted to the driving wheel, and wherein a rotating force of the engine is transmitted to the electric generator. ### Claim 14 An electronic device supplied with power from a power storage device, the power storage device comprising: a plurality of battery block groups, wherein each of the plurality of battery block groups comprising a plurality of battery blocks, wherein each of the plurality of battery blocks comprising a plurality of battery cells, wherein the plurality of battery cells in each of the plurality of battery blocks are arranged in a first direction, wherein the plurality of battery blocks in each of the plurality of battery block groups are arranged in a second direction orthogonal to the first direction, wherein the plurality of battery cells in each of the plurality of battery blocks is in a corresponding straight line, and wherein the plurality of battery cells in each of the plurality of battery blocks are interconnected in parallel; and a connection terminal electrically connected to terminal faces of the plurality of battery cells of a first battery block of the plurality of battery blocks, wherein adjacent battery blocks of the plurality of battery blocks are in a straw bag arrangement, wherein a first cut out is formed from an edge of the connection terminal in a third direction perpendicular to a longitudinal direction of the connection terminal; wherein at least one second cut out is connected to the first cut out and is extended along the longitudinal direction of the connection terminal, wherein the longitudinal direction of the connection terminal is substantially same as the first direction, and wherein a position of the first cut out corresponds to a boundary between adjacent battery cells of the plurality of battery cells connected in parallel. ### Claim 15 An electric vehicle, comprising: a conversion device which is supplied with power from a power storage device, wherein the power storage device comprising: a plurality of battery block groups, wherein each of the plurality of battery block groups comprising a plurality of battery blocks, wherein each of the plurality of battery blocks comprising a plurality of battery cells, wherein the plurality of battery cells in each of the plurality of battery blocks are arranged in a first direction, wherein the plurality of battery blocks in each of the plurality of battery block groups are arranged in a second direction orthogonal to the first direction, wherein the plurality of battery cells in each of the plurality of battery blocks is in a corresponding straight line, and wherein the plurality of battery cells in each of the plurality of battery blocks are interconnected in parallel; and a connection terminal electrically connected to terminal faces of the plurality of battery cells of a first battery block of the plurality of battery blocks, wherein adjacent battery blocks of the plurality of battery blocks are in a straw bag arrangement, wherein a first cut out is formed from an edge of the connection terminal in a third direction perpendicular to a longitudinal direction of the connection terminal; wherein at least one second cut out is connected to the first cut out and is extended along the longitudinal direction of the connection terminal, wherein the longitudinal direction of the connection terminal is substantially same as the first direction, wherein a position of the first cut out corresponds to a boundary between adjacent battery cells of the plurality of battery cells connected in parallel, and wherein the conversion device is configured to convert the power to a driving force of the electric vehicle; and a control device configured to process information associated with vehicle control on a basis of information associated with the power storage device. ### Claim 16 An apparatus, comprising: a connection terminal configured to: electrically connect a plurality of battery cells of a first battery block of a plurality of battery blocks, wherein each battery block of the plurality of battery blocks includes the corresponding plurality of battery cells connected in parallel, wherein adjacent battery blocks of the plurality of battery blocks are in a straw bag arrangement, wherein the connection terminal comprises a first cut out and at least one second cut out, wherein the first cut out is formed from an edge of the connection terminal, wherein the first cut out is in a direction perpendicular to a longitudinal direction of the connection terminal, wherein the at least one second cut out is connected to the first cut out and is extended along the longitudinal direction of the connection terminal, and wherein a position of the first cut out corresponds to a boundary between adjacent battery cells of the plurality of battery cells connected in parallel.