# US 2014/0154558 A1 · Large Scale Battery Systems and Method of Assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0154558 A1 - Document ID: US20140154558A1 - Status: Published application - Kind: A1 - Application number: 13/933,569 - Filed: 2013-07-02 - Published: 2014-06-05 - Earliest claimed: 2009-09-01 - Assignees: Boston-Power, Inc. - Applicants: Boston-Power, Inc. - Inventors: Per Onnerud; Jan-Roger Linna; John Warner; Chad Souza; Eckart Jansen - Web page: https://patentgrep.com/patent/US20140154558A1 ## 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 10/482: {for several batteries or cells simultaneously or sequentially} - H01M 50/204: Racks, modules or packs for multiple batteries or multiple cells - H01M 50/512: Connection only in parallel - H01M 10/44: Methods for charging or discharging (circuits for charging H02J7/00) - H01M 50/505: comprising a single busbar - H01M 50/516: by welding, soldering or brazing - H01M 50/522: Inorganic material - Y02E 60/10: Energy storage using batteries - Y10T 29/49004: including measuring or testing of device or component part - Y10T 29/49108: Electric battery cell making - 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 - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract The methods in this disclosure allow for the identification, selection, and arrangement of cells, blocks, and modules in large scale battery systems, such as electric vehicle battery systems. An example embodiment of the present invention allows for the identification of the cells, blocks, and modules with a unique identifier or associated parameter (e.g., internal resistance contributions or capacity). Additionally, to form a block, cells may be selected from a group of capacity-range sorting bins. Based on a parameter of the cell, a pseudo-number generator may be also be used to select cells from an available inventory of cells as maintained in a cell database based. Cells may also be placed in a block for uniform effective cell impedance and even cell aging while minimizing overall block capacity degradation caused by cycling. Block capacities may also be computed based on a known average temperature gradient during operation. ## Claims ### Claim 1 A method of selecting cells for a battery system, comprising: measuring internal resistance for components of the battery system; maintaining a database that includes internal resistance measurements; and placing cells in the battery system based on the internal resistance measurements. ### Claim 2 (depends on 1) The method as claimed in claim 1, wherein placing cells includes placing cells having a low internal resistance measurement in areas of high internal resistance contributed from other components of the battery system relative to battery terminals. ### Claim 3 (depends on 1) The method as claimed in claim 1, wherein placing cells includes placing cells having a high internal resistance measurement in areas of low internal resistance contributed from other components of the battery system relative to battery terminals. ### Claim 4 (depends on 1) The method as claimed in claim 1, wherein the database includes identification designations and associated parameters, including the internal resistances, for the cells and components of the battery system. ### Claim 5 (depends on 1) The method as claimed in claim 1, wherein the associated parameters include capacities of the cells and components of the battery system. ### Claim 6 A battery system comprising: a plurality of electrically coupled blocks of plural battery cells, including parallel connected battery cells within each block; and in each block, battery cells having a low internal resistance are placed in areas of high internal resistance contributed from other components of the battery system relative to battery terminals. ### Claim 7 (depends on 6) The battery system as claimed in claim 6, wherein, in each block, battery cells having a high internal resistance are placed in areas of low internal resistance contributed from other components of the battery system relative to battery terminals. ### Claim 8 A method of selecting desired capacities for components of a battery system, comprising: determining a temperature profile within the battery system; estimating a temperature dependent capacity of components of the battery system; and selecting components of the battery system using the temperature dependent capacities and temperature profile. ### Claim 9 (depends on 8) The method as claimed in claim 8, further comprising: selecting a reference block to establish an acceptable temperature for blocks within the battery system; determining a temperature differential based on the reference block temperature and temperature of other blocks within the battery system; determining desired capacity of blocks within the battery system based on the temperature dependent capacities and temperature differential; and placing blocks within the battery system based on the calculated desired capacity. ### Claim 10 A battery system comprising: a plurality of electrically coupled battery system components; and battery system components having low capacity are selected to be placed farthest away from a heat source. ### Claim 11 (depends on 10) The battery system as claimed in claim 10, wherein the battery components include a plurality of electrically coupled blocks of battery cells. ### Claim 12 (depends on 10) The battery system as claimed in claim 10, wherein the battery components include a plurality of electrically coupled modules of blocks of battery cells.