SE546759C2 - Enhanced discharge processes of batteries and battery cells - Google Patents

Enhanced discharge processes of batteries and battery cells

Info

Publication number
SE546759C2
SE546759C2 SE2250287A SE2250287A SE546759C2 SE 546759 C2 SE546759 C2 SE 546759C2 SE 2250287 A SE2250287 A SE 2250287A SE 2250287 A SE2250287 A SE 2250287A SE 546759 C2 SE546759 C2 SE 546759C2
Authority
SE
Sweden
Prior art keywords
battery cell
process according
discharge medium
cell
battery
Prior art date
Application number
SE2250287A
Other languages
Swedish (sv)
Other versions
SE2250287A1 (en
Inventor
Berfu Karli
Mahmood Alemrajabi
Ragnar Sjödahl
Original Assignee
Northvolt Revolt Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Northvolt Revolt Ab filed Critical Northvolt Revolt Ab
Priority to SE2250287A priority Critical patent/SE546759C2/en
Priority to PCT/EP2023/055406 priority patent/WO2023166163A1/en
Priority to US18/843,051 priority patent/US20250174748A1/en
Priority to EP23709192.1A priority patent/EP4487404A1/en
Priority to CA3244957A priority patent/CA3244957A1/en
Publication of SE2250287A1 publication Critical patent/SE2250287A1/en
Publication of SE546759C2 publication Critical patent/SE546759C2/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/54—Reclaiming serviceable parts of waste accumulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4242—Regeneration of electrolyte or reactants
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H01M10/448—End of discharge regulating measures

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Secondary Cells (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The current disclosure relate to processes and systems for discharging of rechargeable battery cells, said battery cells having electric poles and one or more vents, the method comprising puncturing a vent of a battery cell, submerging the battery cell in a discharge medium such that at least the electric poles and the punctured vent of the battery cell are covered with the discharge medium, wherein the discharge medium is an electrically conductive fluid, discharging the one or more battery cell until it has reached a target cell voltage threshold by allowing the battery cell to be submerged in the discharge medium for a predetermined processing time t, wherein the target cell voltage threshold is above 0V, then removing the one or more battery cell from the discharge medium.

Claims (1)

1. Claims A process for discharging of rechargeable battery cells, said battery cells having electric poles and one or more vents, the comprising: puncturing (S2) a vent of one or more battery cell; submerging (S3) the one or more battery cell in a discharge medium such that at least the electric poles and the punctured vent of the one or more battery cell are covered with the discharge medium, wherein the discharge medium is an electrically conductive fluid;_¿g; discharging (S4) the one or more battery cell until it has reached a target cell voltage threshold by allowing the battery cell to be submerged in the discharge medium for a predetermined processing time t, wherein the target cell voltage threshold is above 0 volts, V; and removing (S5) the one or more battery cell from the discharge medium. The process according to claim 1, wherein the target cell voltage threshold is in the range of 1,0 V to 2,5 V, and wherein the battery cell is said to have reached the threshold when the remaining cell voltage is at or below the threshold. The process according to claim 2, wherein the target cell voltage threshold is in the range of 1,5 V, to 2,2 V, such as 1,8 V. The process according to any one of claims 1-3, further comprising: reading (S0) an ID tag of each one of the one or more battery cell, thereby obtaining information indicating one or more properties of the one or more battery cell; and sorting (S1) the one or more battery cell into a group of a plurality of groups of battery cells based on the obtained information for the battery cell, wherein each group of the plurality of groups will be treated in a separate discharging process in the following steps. The process according to any one of claims 1-4, wherein a discharge time for each battery cell to reach the target cell voltage threshold is either i) estimated based on previous knowledge of battery cells having similar properties as the Internal battery cell, wherein said properties include a state of charge, SOC, a type and size, and/or energy content, or ii) randomly determined, and wherein the processing time tis predetermined based on said estimated or randomly determined discharge time. _ The process according to any one of claims 1-5, wherein the processing time t, is between 2-8 hours. _ The process according to any one of claims 4-6, wherein sorting the one or more battery cell into a group of a battery cells is based on an estimated discharge time for the battery cell to reach the target cell voltage threshold being within a discharge time range for the battery cell group, or based on a state of charge, SOC, for the battery cell being within a SOC range for the battery cell group. _ The process according to any one of claims 4-7, wherein an estimated discharge time for each one of the one or more battery cell to reach the target cell voltage threshold may be obtained from a lookup table based on the obtained information regarding the properties of each battery cell. _ The process according to any one of claims 4-8, wherein the predetermined processing time tfor each one of the one or more battery cell is determined (i) as an estimated discharge time for the battery cell or (ii) based on an estimated discharge time range of the group that the battery cell has been sorted into. 10_The process according to any one of the previous claims, wherein discharging (S4) the one or more battery cell until it has reached a target cell voltage threshold and removing (S5) the one or more battery cell from the discharge medium comprises: allowing (S41) the one or more battery cell to be submerged in the discharge medium for a predetermined processing time t; removing (S51) the one or more battery cell from the discharge medium; Internalperforming (S6) a voltage Validation of remaining cell voltage of the one or more battery cell by measuring the remaining cell voltage of the one or more battery cell; and on condition that the voltage validation shows that the remaining cell voltage is at or below the cell voltage threshold, sending (S7) the one or more battery cell to a next step in a battery cell recycling process; on condition that the voltage validation shows that the remaining cell voltage is above the cell voltage threshold, submerging (S42) the one or more battery cell in the discharge medium for additional discharging during an additional processing time; and removing (S52) the one or more battery cell from the discharge medium. .The process according to any one of the previous claims, wherein the discharge medium is an aqueous solution comprising a salt concentration of 0-15 wt.%. 12.The process according to any one of the previous claims, wherein the discharge medium is an aqueous salt solution comprising one or more salts selected from Na2CO3, NaHCO3, K2CO3, NaNO3, NaNO2, FeSO4, NH4OH and NaSO 13.The process according to any one of the previous claims, wherein the discharge medium is an aqueous salt solution comprising Na2CO3, wherein the Na2CO3 concentration is in the range of 1-15 wt.%, such as 1-8 wt.%, or 1-5 wt.%. 14.The process according to claim wherein sending (S7) the one or more battery cell to a next step in a battery cell recycling process comprises sending the one or more battery cell to be washed and then crushed, before metal extraction. 15.The process according to any one of the preceding claims, wherein the process further comprises recovery of the electrically conductive fluid of the discharge medium by: removing (S8) impurities from the electrically conductive fluid to obtain 5 a raw electrically conductive fluid; and adjusting (S9) the concentration of the obtained raw electrically conductive fluid for reuse.
SE2250287A 2022-03-03 2022-03-03 Enhanced discharge processes of batteries and battery cells SE546759C2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
SE2250287A SE546759C2 (en) 2022-03-03 2022-03-03 Enhanced discharge processes of batteries and battery cells
PCT/EP2023/055406 WO2023166163A1 (en) 2022-03-03 2023-03-03 Enhanced discharge processes
US18/843,051 US20250174748A1 (en) 2022-03-03 2023-03-03 Enhanced discharge processes
EP23709192.1A EP4487404A1 (en) 2022-03-03 2023-03-03 Enhanced discharge processes
CA3244957A CA3244957A1 (en) 2022-03-03 2023-03-03 Enhanced discharge processes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2250287A SE546759C2 (en) 2022-03-03 2022-03-03 Enhanced discharge processes of batteries and battery cells

Publications (2)

Publication Number Publication Date
SE2250287A1 SE2250287A1 (en) 2023-09-04
SE546759C2 true SE546759C2 (en) 2025-02-18

Family

ID=85477919

Family Applications (1)

Application Number Title Priority Date Filing Date
SE2250287A SE546759C2 (en) 2022-03-03 2022-03-03 Enhanced discharge processes of batteries and battery cells

Country Status (5)

Country Link
US (1) US20250174748A1 (en)
EP (1) EP4487404A1 (en)
CA (1) CA3244957A1 (en)
SE (1) SE546759C2 (en)
WO (1) WO2023166163A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20250014747A (en) * 2023-07-21 2025-02-03 삼성에스디아이 주식회사 Battery pack fire extinguishing system capable of reducing direct injection operation time and method of filling the fire extinguishing agent therefor
KR20250076166A (en) * 2023-11-22 2025-05-29 삼성에스디아이 주식회사 Container for battery disposal and battery disposal device
DE102024108760A1 (en) * 2024-03-27 2025-10-02 Lisa Dräxlmaier GmbH Method and device for the controlled discharge of at least one battery cell, and use of an electrically conductive liquid with at least reduced corrosive properties for the controlled discharge of at least one battery cell

Citations (10)

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JPH08306394A (en) * 1995-04-28 1996-11-22 Ricoh Co Ltd How to dispose of used batteries
US5631540A (en) * 1994-11-23 1997-05-20 Lucent Technologies Inc. Method and apparatus for predicting the remaining capacity and reserve time of a battery on discharge
US20060250109A1 (en) * 2005-04-08 2006-11-09 Kazunori Haraguchi Classification and collection method and identification method for batteries
CN102856610A (en) * 2012-08-28 2013-01-02 奇瑞汽车股份有限公司 Pretreatment method for recycling scrap lithium ion battery
WO2014017085A1 (en) * 2012-07-25 2014-01-30 三洋電機株式会社 Battery-pack processing device
CN207967229U (en) * 2018-01-12 2018-10-12 宁德时代新能源科技股份有限公司 Battery scraps processing unit
CN110620410A (en) * 2019-09-02 2019-12-27 宁波唯嘉电子科技有限公司 Lithium battery mis-charging judging method, storage medium and control terminal
CN110391474B (en) * 2018-04-23 2020-09-29 中南大学 Discharging method of waste lithium ion battery
CN111740176A (en) * 2020-07-02 2020-10-02 南京工程学院 A sorting method for retired power lithium batteries
CN111900503A (en) * 2020-08-04 2020-11-06 威立雅新能源科技(江门)有限公司 Mixed solution for discharging lithium ion battery and discharging method thereof

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CN110079671B (en) * 2019-04-23 2021-02-02 广东光华科技股份有限公司 Method for comprehensively recovering valuable elements of waste lithium ion batteries

Patent Citations (10)

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US5631540A (en) * 1994-11-23 1997-05-20 Lucent Technologies Inc. Method and apparatus for predicting the remaining capacity and reserve time of a battery on discharge
JPH08306394A (en) * 1995-04-28 1996-11-22 Ricoh Co Ltd How to dispose of used batteries
US20060250109A1 (en) * 2005-04-08 2006-11-09 Kazunori Haraguchi Classification and collection method and identification method for batteries
WO2014017085A1 (en) * 2012-07-25 2014-01-30 三洋電機株式会社 Battery-pack processing device
CN102856610A (en) * 2012-08-28 2013-01-02 奇瑞汽车股份有限公司 Pretreatment method for recycling scrap lithium ion battery
CN207967229U (en) * 2018-01-12 2018-10-12 宁德时代新能源科技股份有限公司 Battery scraps processing unit
CN110391474B (en) * 2018-04-23 2020-09-29 中南大学 Discharging method of waste lithium ion battery
CN110620410A (en) * 2019-09-02 2019-12-27 宁波唯嘉电子科技有限公司 Lithium battery mis-charging judging method, storage medium and control terminal
CN111740176A (en) * 2020-07-02 2020-10-02 南京工程学院 A sorting method for retired power lithium batteries
CN111900503A (en) * 2020-08-04 2020-11-06 威立雅新能源科技(江门)有限公司 Mixed solution for discharging lithium ion battery and discharging method thereof

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NEMBHARD, N. 'Safe, Sustainable Discharge of Electric Vehicle Batteries as a Pre-treatment Step to Crushing in the Recycling Process', [online], KTH School of Industrial Engineering and Management, 2020-12-17, p 56-58. [retreived on 2021-09-08] Retreived from the Internet: https://upcommons.upc.edu/handle/2117/334753 *

Also Published As

Publication number Publication date
US20250174748A1 (en) 2025-05-29
SE2250287A1 (en) 2023-09-04
WO2023166163A1 (en) 2023-09-07
EP4487404A1 (en) 2025-01-08
CA3244957A1 (en) 2023-09-07

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