# US 2014/0154530 A1 · Battery pack and vehicle provided with same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0154530 A1 - Document ID: US20140154530A1 - Status: Published application - Kind: A1 - Application number: 14/085,105 - Filed: 2013-11-20 - Published: 2014-06-05 - Earliest claimed: 2012-11-30 - Assignees: Toyota Jidosha Kabushiki Kaisha - Inventors: Nobuyoshi FUJIWARA; Kosuke KUSABA; Katsunori SATO - Web page: https://patentgrep.com/patent/US20140154530A1 ## CPC - H01M 50/325: comprising deformable valve members, e.g. elastic or flexible valve members - B60L 50/64: Constructional details of batteries specially adapted for electric vehicles - H01M 50/213: adapted for cells having curved cross-section, e.g. round or elliptic (H01M50/209, H01M50/216 take precedence) - H01M 50/249: specially adapted for aircraft or vehicles, e.g. cars or trains (constructional details of batteries specially adapted for electric vehicles B60L50/64) - H01M 50/507: comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules - H01M 50/512: Connection only in parallel - H01M 10/0422: {Cells or battery with cylindrical casing} - H01M 50/227: Organic material - H01M 50/30: Arrangements for facilitating escape of gases - H01M 50/583: in response to current, e.g. fuses - H01M 2200/103: Fuse - 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 - 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 - 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 A battery pack includes a single cell having a cylindrical shape, the single cell having a positive electrode at one end of the single cell and a negative electrode at the other end of the single cell, a plurality of the single cells being arranged in a radial direction of the single cell; a fuse; a first bus bar connected via the fuse to one electrode, from among the positive electrode and the negative electrode; a second bus bar directly connected to the other electrode, from among the positive electrode and the negative electrode; and a retaining member configured to retain the plurality of single cells from the radial direction of the single cell, in a manner such that when the fuse is disconnected, retaining force with which the single cell is retained by the retaining member decreases and the single cell moves in a direction away from the fuse. ## Claims ### Claim 1 A battery pack comprising: a single cell having a cylindrical shape, the single cell having a positive electrode at one end of the single cell and a negative electrode at the other end of the single cell, and a plurality of the single cells being arranged in a radial direction of the single cell; a fuse; a first bus bar connected via the fuse to one electrode, from among the positive electrode and the negative electrode; a second bus bar directly connected to the other electrode, from among the positive electrode and the negative electrode; and a retaining member configured to retain the plurality of single cells from the radial direction of the single cell, in a manner such that when the fuse is disconnected, retaining force with which the single cell is retained by the retaining member decreases and the single cell moves in a direction away from the fuse. ### Claim 2 (depends on 1) The battery pack according to claim 1, wherein the single cell is arranged with the one electrode facing upward and the other electrode facing downward, and when the retaining force decreases, the single cell moves in the direction away from the fuse by falling due to gravitational force. ### Claim 3 (depends on 2) The battery pack according to claim 2, wherein the retaining member has a retaining surface that retains the single cell, the retaining surface is made of resin, and when the fuse is disconnected, the retaining surface thermally melts or cracks such that the retaining force decreases. ### Claim 4 (depends on 2) The battery pack according to claim 2, further comprising: a gas release valve provided on the other electrode-side of the single cell, and the gas release valve being configured to release gas that is inside the single cell. ### Claim 5 (depends on 1) The battery pack according to claim 1, wherein the second bus bar elastically deforms and applies tension to the single cell such that the tension pulls the single cell in the direction away from the fuse. ### Claim 6 (depends on 5) The battery pack according to claim 5, further comprising: a gas release valve provided on the positive electrode-side of the single cell, and the gas release valve being configured to release gas that is inside the single cell, wherein the one electrode is the negative electrode and the other electrode is the positive electrode. ### Claim 7 (depends on 1) The battery pack according to claim 1, wherein the plurality of single cells are connected together in parallel. ### Claim 8 A vehicle comprising: a battery pack including, a single cell having a cylindrical shape, the single cell having a positive electrode at one end of the single cell and a negative electrode at the other end of the single cell, and a plurality of the single cells being arranged in a radial direction of the single cell, a fuse, a first bus bar connected via the fuse to one electrode, from among the positive electrode and the negative electrode, a second bus bar directly connected to the other electrode, from among the positive electrode and the negative electrode, and a retaining member configured to retain the plurality of single cells from the radial direction of the single cell, in a manner such that when the fuse is disconnected, retaining force with which the single cell is retained by the retaining member decreases and the single cell moves in a direction away from the fuse; and a motor configured to travel a vehicle, the motor being driven using electric power stored in the battery pack.