# US 12,111,360 B2 · Battery pack and power supply apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,111,360 B2 - Document ID: US12111360B2 - Status: Granted - Kind: B2 - Application number: 17/583,414 - Filed: 2022-01-25 - Published: 2022-08-04 - Granted: 2024-10-08 - Earliest claimed: 2021-02-04 - Assignees: Nanjing Chervon Industry Co., Ltd. - Applicants: Nanjing Chervon Industry Co., Ltd. - Inventors: Dong Yang; Zhaotao Zhang; Junya Duan; Zhongcao Hu - Web page: https://patentgrep.com/patent/US12111360B2 ## CPC - G01R 31/3648: {comprising digital calculation means, e.g. for performing an algorithm} - H02J 7/855: {with circuits adapted for supplying loads from the battery} - B25F 5/02: Construction of casings, bodies or handles {(B25F5/006, B25F5/008 take precedence)} - H01M 10/425: {Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00)} - H01M 10/44: Methods for charging or discharging (circuits for charging H02J7/00) - H01M 10/441: {for several batteries or cells simultaneously or sequentially} - H01M 10/482: {for several batteries or cells simultaneously or sequentially} - H01M 50/204: Racks, modules or packs for multiple batteries or multiple cells - H02J 7/731: {specially adapted for holding portable devices containing batteries (H02J7/751 takes precedence)} - H02J 7/933: {the cycle being controlled or terminated in response to electric parameters} - H02J 7/94: in response to battery current - 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 2010/4278: {Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller} - H01M 2220/30: Batteries in portable systems, e.g. mobile phone, laptop - H02J 7/42: with electronic devices having internal batteries, e.g. mobile phones - H02J 7/80: including monitoring or indicating arrangements - Y02E 60/10: Energy storage using batteries - G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12) - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - B25F: COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR {(machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass B23P23/00 and subgroups)} - 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 A battery pack includes a plurality of cells, a first detection unit configured to detect a first electrical parameter of a cell, a second detection unit configured to detect a second electrical parameter of a cell group, a storage unit at least configured to store a third electrical parameter of the cell, and a control unit configured to acquire the first electrical parameter, the second electrical parameter, and the third electrical parameter, dynamically adjust a discharge capacity parameter of the battery pack based on the third electrical parameter, the first electrical parameter, and the second electrical parameter, and transmit the discharge capacity parameter to a load connected to the battery pack to enable the load to adjust the current operating state based on the discharge capacity parameter. ## Claims ### Claim 1 A power supply apparatus, comprising: a first detection unit configured to detect a first electrical parameter of the power supply apparatus; a second detection unit configured to detect a second electrical parameter of the power supply apparatus; a storage unit at least configured to store a third electrical parameter of the power supply apparatus; and a control unit at least electrically connected to the first detection unit, the second detection unit, and the storage unit, wherein the control unit is configured to: acquire the first electrical parameter, the second electrical parameter, and the third electrical parameter; and dynamically adjust a discharge capacity parameter of the power supply apparatus based on the first electrical parameter, the second electrical parameter, and the third electrical parameter. ### Claim 2 (depends on 1) The power supply apparatus of claim 1, wherein the control unit is further configured to transmit the discharge capacity parameter to a load connected to the power supply apparatus to enable the load to adjust a current operating state based on the discharge capacity parameter. ### Claim 3 (depends on 1) The power supply apparatus of claim 1, wherein the first electrical parameter comprises a voltage of the power supply apparatus. ### Claim 4 (depends on 1) The power supply apparatus of claim 1, wherein the second electrical parameter comprises an output current on a power supply circuit of the power supply apparatus. ### Claim 5 (depends on 1) The power supply apparatus of claim 1, wherein the third electrical parameter comprises an internal resistance of the power supply apparatus. ### Claim 6 (depends on 5) The power supply apparatus of claim 5, wherein the control unit is configured to acquire the internal resistance of the power supply apparatus by querying a table. ### Claim 7 (depends on 6) The power supply apparatus of claim 6, wherein the storage unit stores the internal resistance corresponding to the power supply apparatus at different discharge stages. ### Claim 8 (depends on 5) The power supply apparatus of claim 5, wherein the control unit is configured to estimate the internal resistance of the power supply apparatus based on a preset discharge model. ### Claim 9 (depends on 5) The power supply apparatus of claim 5, wherein the power supply apparatus comprises a battery pack, the battery pack comprises a plurality of cell groups connected in parallel or in series, and the control unit is configured to dynamically adjust the discharge capacity parameter based on a number of the plurality of the cell groups connected in parallel, the first electrical parameter, the second electrical parameter, and the internal resistance of the power supply apparatus. ### Claim 10 (depends on 1) The power supply apparatus of claim 1, wherein the first electrical parameter collected by the first detection unit is a dynamically updating parameter. ### Claim 11 (depends on 1) The power supply apparatus of claim 1, wherein the second electrical parameter collected by the second detection unit is a dynamically updating parameter. ### Claim 12 (depends on 1) The power supply apparatus of claim 1, wherein the third electrical parameter is a dynamically updating parameter. ### Claim 13 A battery pack, comprising: a cell group comprising a plurality of cells; a first detection unit configured to detect a voltage of one cell of the plurality of cells; a second detection unit configured to detect an output current on a power supply circuit of the cell group; and a control unit at least electrically connected to the first detection unit and the second detection unit, wherein the control unit is configured to: acquire the voltage of the one cell, the output current on a power supply circuit of the cell group, and an internal resistance of the one cell; and dynamically adjust a discharge capacity parameter of the battery pack based on the voltage of the one cell, the output current on the power supply circuit of the cell group, and the internal resistance of the one cell. ### Claim 14 (depends on 13) The battery pack of claim 13, wherein the control unit is configured to acquire the internal resistance of the one cell by querying a table. ### Claim 15 (depends on 13) The battery pack of claim 13, wherein the control unit is configured to estimate the internal resistance of the one cell based on a preset cell discharge model. ### Claim 16 (depends on 13) The battery pack of claim 13, wherein the battery pack comprises a plurality of the cell groups connected in parallel or in series and the control unit is configured to dynamically adjust the discharge capacity parameter based on a number of the plurality of the cell groups connected in parallel, the voltage of the one cell, the output current on a power supply circuit of the cell group, and the internal resistance of the one cell. ### Claim 17 (depends on 13) The battery pack of claim 13, wherein the voltage of the one cell collected by the first detection unit is a dynamically updating parameter. ### Claim 18 (depends on 13) The battery pack of claim 13, wherein the output current on the power supply circuit of the cell group collected by the second detection unit is a dynamically updating parameter. ### Claim 19 (depends on 13) The battery pack of claim 13, wherein the internal resistance of the one cell is a dynamically updating parameter. ### Claim 20 A method for calculating a discharge capacity of a power supply apparatus, comprising: acquiring a first electrical parameter of the power supply apparatus, a second electrical parameter of the power supply apparatus, and a third electrical parameter of the power supply apparatus; dynamically adjusting a discharge capacity parameter of the power supply apparatus based on the first electrical parameter of the power supply apparatus, the second electrical parameter of the power supply apparatus, and the third electrical parameter of the power supply apparatus; and transmitting the discharge capacity parameter to a load connected to the power supply apparatus to enable the load to adjust a current operating state based on the discharge capacity parameter.