公开(公告)号：US12132163B2

公开(公告)日：2024-10-29

申请号：US17761746

申请日：2020-09-17

Applicant: LG Energy Solution, Ltd.

Inventor： Soon Ju Choi ,  Eun Ju Lee ,  Seok Koo Kim ,  Ji Eun Lee ,  Ji Hoon Ryu

IPC: H01M10/04 ,  H01M10/0583 ,  H01M10/44 ,  H01M50/317 ,  H01M50/46

CPC classification number: H01M10/049 ,  H01M10/0583 ,  H01M10/446 ,  H01M50/317 ,  H01M50/46

Abstract: The present invention relates to a method for manufacturing a secondary battery and a secondary battery. The method for manufacturing the secondary battery comprises an accommodation step of accommodating an electrode assembly in an accommodation part of a battery case, a vent membrane mounting step of mounting a vent membrane on a discharge hole, which passes between the inside and outside of the battery case, in the battery case, and a case sealing step of sealing the battery case, wherein the vent membrane allows only a gas to pass through the discharge hole of the battery case, but blocks a liquid.

公开(公告)号：US12113164B2

公开(公告)日：2024-10-08

申请号：US18315245

申请日：2023-05-10

Applicant: Sila Nanotechnologies, Inc.

Inventor： Gleb Yushin ,  Bogdan Zdyrko ,  Alexander Thomas Jacobs ,  Eugene Michael Berdichevsky

IPC: H01M10/0525 ,  H01M10/054 ,  H01M10/42 ,  H01M10/44 ,  H01M50/691

CPC classification number: H01M10/0525 ,  H01M10/054 ,  H01M10/4235 ,  H01M10/446 ,  H01M50/691 ,  Y02T10/70 ,  Y10T29/49108

Abstract: Metal-ion battery cells are provided that take advantage of the disclosed “doping” process. The cells may be fabricated from anode and cathode electrodes, a separator, and an electrolyte. A metal-ion additive may be incorporated into (i) one or more of the electrodes, (ii) the separator, or (iii) the electrolyte. The metal-ion additive provides additional donor ions corresponding to the metal ions stored and released by anode and cathode active material particles. An activation potential may then be applied to the anode and cathode electrodes to release the additional donor ions into the battery cell.

公开(公告)号：US20240313276A1

公开(公告)日：2024-09-19

申请号：US18183755

申请日：2023-03-14

Applicant: NATIONAL INSTRUMENTS CORPORATION

Inventor： Piet Vanassche ,  Jeroen Van den Keybus

IPC: H01M10/44 ,  H02J7/00

CPC classification number: H01M10/446 ,  H01M10/441 ,  H01M10/443 ,  H02J7/0069

Abstract: Systems, methods and devices for performing dynamically controlled battery cell formation. A formation process is performed on a plurality of battery cells. A series connection is established through each of the plurality of battery cells and a cycling device. Each battery cell is coupled to a respective monitoring device to monitor performance during cell formation. The monitoring devices provide indications to a controller when their monitored battery cells experience a status change. Responsive to the indication, instructions are provided for synchronously modifying the series connection through the first battery cell and modifying a voltage amplitude at the cycling device. Modifying the series connection through the first battery cell may include switching a voltage polarity across the first battery cell shorting the series connection around the first battery cell without modifying the series connection through the other battery cells.

公开(公告)号：US20240306732A1

公开(公告)日：2024-09-19

申请号：US18280185

申请日：2021-12-14

Applicant: KT&G CORPORATION

Inventor： Daenam HAN ,  Seoksu JANG ,  Seungwon LEE ,  Sungwook YOON ,  Yonghwan KIM

IPC: A24F40/90 ,  A24F40/50 ,  H01M10/44 ,  H02J7/00

CPC classification number: A24F40/90 ,  A24F40/50 ,  H01M10/446 ,  H01M10/448 ,  H02J7/0063 ,  H02J7/007182 ,  H01M2220/30

Abstract: An aerosol-generating device and an operation method thereof are disclosed. The aerosol-generating device of the present disclosure includes a heater configured to heat an aerosol-generating substance, a battery configured to supply electric power to the heater, and a controller. The controller updates the number of times of charging/discharging of the battery based on at least one of a result of performing operation related to charging or a result of performing operation related to discharging. When the number of times of charging/discharging is less than a preset reference number of times, the controller maintains a reference voltage preset in relation to charging of the battery. When the number of times of charging/discharging is equal to or greater than the preset reference number of times, the controller changes the reference voltage to a second voltage level, which is lower than the currently set first voltage level.

公开(公告)号：US12095070B2

公开(公告)日：2024-09-17

申请号：US17417598

申请日：2020-09-09

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Jung Mi Lee ,  Nak Gi Sung ,  Joon Sung Bae

IPC: H01M4/04 ,  H01M10/44

CPC classification number: H01M4/0447 ,  H01M10/446

Abstract: The present invention comprises: a pre-aging step for aging, at room temperature, a secondary battery comprising a cathode including a cathode active material, an anode including an anode active material, a separator interposed between the cathode and the anode, and an electrolyte (S100); a first charging step for primarily charging the pre-aged secondary battery to an SOC of the secondary battery of 60% or higher (S200); a high-temperature aging step for aging the primarily charged secondary battery at a high temperature (S300); and a room-temperature aging step for aging the high-temperature aged secondary battery at room temperature (S400), wherein the room-temperature aging step comprises a resetting process for charging the secondary battery to the same SOC as in the first charging step.

公开(公告)号：US20240304867A1

公开(公告)日：2024-09-12

申请号：US18669632

申请日：2024-05-21

Applicant: Jiangsu KATOP Automation Co., Ltd.

Inventor： Leifeng Wang ,  Anmin Zhang ,  Yunqing Wu

IPC: H01M10/058 ,  H01M10/44 ,  H02J7/00

CPC classification number: H01M10/058 ,  H01M10/446 ,  H02J7/0045 ,  H02J7/0069 ,  H01M10/441 ,  H02J7/0013

Abstract: Provided herein is an efficient and energy-saving system for battery formation and grading, which includes a busbar, a charging module, a discharging module, a load transfer unit, a limiting unit and a formation fixture. The busbar is connected to an external constant current source. The formation fixture is used for loading a plurality of lithium batteries to be formation and grading. The load transfer unit is used for moving a lithium battery. The limiting unit is used for intercepting and positioning the lithium battery when it reaches a designated station, and releasing the lithium battery when it is about to move to the next station. Advantageously, the charging module and the discharging module are arranged independently, so that all the charging module and the discharging module can work simultaneously without forming any idle charging circuit or discharging circuit, thereby reducing the energy loss and system cost due to idle circuit.

公开(公告)号：US12062773B2

公开(公告)日：2024-08-13

申请号：US17623510

申请日：2020-07-02

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Myung-Hoon Ko ,  Jee-Ho Kim ,  Yong-Tae Lee ,  Pil-Kyu Park

IPC: H01M4/04 ,  H01M10/0525 ,  H01M10/44

CPC classification number: H01M4/0447 ,  H01M10/0525 ,  H01M10/446

Abstract: Provided is a method for determining the wetting degree of a lithium ion battery cell using a low current test. The wetting degree determination method according to the present disclosure includes a) obtaining, as a reference charge profile, a charge profile recorded while charging a reference battery cell having undergone receiving an electrode assembly and an electrolyte solution in a case, assembling and pre-aging with a low current of 0.01 C-rate or less, b) measuring and recording a charge profile while charging another battery cell having undergone receiving an electrode assembly and an electrolyte solution in a case, assembling and pre-aging with a low current of 0.01 C-rate or less in the same way as the reference battery cell, and c) determining the wetting degree of another battery cell relative to the reference battery cell by comparative analysis of the reference charge profile and the measured charge profile.

公开(公告)号：US12057552B2

公开(公告)日：2024-08-06

申请号：US16633428

申请日：2019-01-29

Applicant: LG CHEM, LTD.

Inventor： In Tae Chun ,  Jae Huoung Son ,  Chang Min Han ,  Ik Soo Chae ,  Chang Bum Ahn

IPC: H01M10/0585 ,  H01M10/0525 ,  H01M10/44

CPC classification number: H01M10/0585 ,  H01M10/0525 ,  H01M10/446

Abstract: A method for manufacturing a secondary battery capable of preventing the phenomenon of bending of an electrode stack generated in an activation step, and a secondary battery produced thereby are provided. The method of manufacturing a lithium secondary battery includes (a) a step of manufacturing a lithium secondary battery by embedding an electrode stack together with an electrolyte in a battery case, (b) a step of aging the battery at room temperature, (c) a hot press step of applying pressure and heat to the lithium secondary battery, and (d) a step of charging the battery, in which a stack surface of the electrode stack is laminated by the hot press step. In the process of activating the secondary battery in which the electrolyte is injected by performing a hot press step, it is possible laminate the stack surface of the electrode stack before the charging process.

公开(公告)号：US20240243295A1

公开(公告)日：2024-07-18

申请号：US18319573

申请日：2023-05-18

Applicant: National Taiwan University of Science and Technology

Inventor： Bing-Joe Hwang ,  Teshager Mekonnen Tekaligne ,  Sheng-Chiang Yang ,  Wei-Nien Su

IPC: H01M4/62 ,  C25D11/00 ,  H01M10/44

CPC classification number: H01M4/628 ,  C25D11/00 ,  H01M10/446

Abstract: A method of preventing corrosion of a battery current collector, comprising the steps of: providing an electrochemical battery comprising at least an anode, a cathode, and an electrolyte between the anode and the cathode; wherein: the cathode comprises a metal current collector and the electrolyte comprises a metal chelator, a negatively charged metal salt, and a solvent; performing charge/discharge on the electrochemical battery; wherein, the metal chelator in the electrolyte and the metal ions of the metal current collector, or the metal chelator in the electrolyte is co-chelated with both the metal ions of the metal current collector and the negative charge of the negatively charged metal salt to form an anti-corrosion layer on the metal current collector; by adding a chelating electrolyte as a protective layer, the metal current collector can be protected from electrolyte corrosion and the electrodes maintain high conductivity, thereby improving the efficiency of the battery.

公开(公告)号：US20240243280A1

公开(公告)日：2024-07-18

申请号：US18622196

申请日：2024-03-29

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Shiyang Cheng ,  Jumpei Shitaba ,  Ye Lang ,  Yuhao Lu

IPC: H01M4/525 ,  H01M4/02 ,  H01M4/505 ,  H01M10/04 ,  H01M10/44

CPC classification number: H01M4/525 ,  H01M4/505 ,  H01M10/0427 ,  H01M10/446 ,  H01M10/448 ,  H01M2004/028

Abstract: A positive electrode material, including a lithium transition metal oxide. As tested by X-ray diffractometry, a full width at half maximum FWHM(101) of a (101) crystal plane diffraction peak and a full width at half maximum FWHM(104) of a (104) crystal plane diffraction peak of the positive electrode material satisfy: FWHM(101)/FWHM(104)≤0.7. This application further provides an electrochemical device and an electronic device that includes the positive electrode material. The positive electrode material is of excellent structural stability under high temperature and high voltage, and is of excellent kinetic performance under high-rate charging and discharging conditions.