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公开(公告)号：US11728474B2
公开(公告)日：2023-08-15
申请号：US16534494
申请日：2019-08-07
Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED
Inventor： Huixin Wang , Silin Huang , Hongming Yu , Sheng Cheng
IPC: H01M4/36 , H01M4/04 , H01M4/1393 , H01M10/052
CPC classification number: H01M4/366 , H01M4/0404 , H01M4/1393 , H01M10/052
Abstract: A battery cell is disclosed having a cathode including a cathode substrate with a surface coating of a first cathode active material in a first cathode region and a second cathode active material in a second cathode region, an anode including an anode substrate having a surface coating of a first anode active material in a first anode region and a second anode active material in a second anode region, wherein a value CB1 is a ratio of a unit area capacity CsA1 of the first anode region to a unit area capacity Csc1 of the first cathode region, a value CB2 is a ratio of a unit area capacity CsA2 of the second anode region to a unit area capacity Csc2 of the second cathode region, wherein the surface coating of the cathode and/or anode is a partitioned coating including different active materials, and wherein CB2≥CB1.
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公开(公告)号：US10944134B2
公开(公告)日：2021-03-09
申请号：US16201850
申请日：2018-11-27
Applicant: Ningde Amperex Technology Limited
Inventor： Jifei Wang , Sheng Cheng , Wei Liang , Peilei Yang
Abstract: A battery includes a casing having two first peripheral portions and two second peripheral portions, a cell disposed within the casing, two conductive tabs electrically connected to the cell and exposed from at least one of the first peripheral portions, and an absorbent. Each of the second peripheral portions has a sealed region that has a sealed edge adjacent to the cell. The sealed region of at least one of the second peripheral portions has an inner sealed section disposed adjacent to the sealed edge, an outer sealed section, and an isolating section disposed between the inner sealed section and the outer sealed section. The absorbent is received in the isolating section for absorbing moisture or gas.
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公开(公告)号：US20200313171A1
公开(公告)日：2020-10-01
申请号：US16534494
申请日：2019-08-07
Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED
Inventor： Huixin Wang , Silin Huang , Hongming Yu , Sheng Cheng
IPC: H01M4/36 , H01M4/04 , H01M4/1393 , H01M10/052
Abstract: The present application relates to an electrode and an electrochemical device including the electrode. The anode of the present application includes a first anode region and a second anode region, wherein the unit area capacity CsA2 of the second anode region is greater than or equal to the unit area capacity CsA1 of the first anode region. The cathode of the present application includes a first cathode region and a second cathode region, wherein the unit area capacity CsC2 of the second cathode region is less than or equal to 98% of the unit area capacity CsC1 of the first cathode region. When the anode and/or cathode of the present application are/is applied to an electrochemical device, the formation of lithium dendrites can be effectively reduced, thereby improving the safety of the electrochemical device.
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Patent Agency Ranking
公开(公告)号：US20150004498A1
公开(公告)日：2015-01-01
申请号：US14147463
申请日：2014-01-03
Applicant: Ningde Amperex Technology Limited
Inventor： Sheng Cheng , Shaojun Niu , Dongming He , Xiaowen Zhang
Abstract: The present disclosure provides a separator and an electrochemical device, the separator is provided with a folded structure unit across a widthwise direction of the separator, and an overlapping part of the folded structure unit is filled with an adhesive. When the separator is applied into a production of the electrochemical device, a winding process can be performed as usual. After an electrolyte injection or high temperature aging of the electrochemical device, the adhesive filled in the folded structure unit of the separator may be dissolved into the electrolyte, the folded structure unit can be unfolded to a flat position again, so as to effectively eliminate deformation of the electrochemical device, which may be caused by thermal contraction of the separator, over stress in the separator wound in a cell, or the separator's binding on expansion of negative and positive electrodes, during operation and production of the electrochemical device.
Abstract translation: 本公开提供了一种分离器和电化学装置，隔板在分隔件的宽度方向上设置有折叠结构单元，并且折叠结构单元的重叠部分填充有粘合剂。 当分离器应用于电化学装置的生产中时，可以像往常那样执行卷绕工艺。 在电化学装置的电解质注入或高温老化之后，填充在分离器的折叠结构单元中的粘合剂可以溶解到电解质中，折叠的结构单元可以再次展开到平坦的位置，以便有效地消除变形 的电化学装置，其可能由分离器的热收缩引起，在电池中缠绕的隔膜中的应力超过应力，或者在电化学装置的操作和制造期间隔板对负极和正极的膨胀的结合。
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公开(公告)号：US11682765B2
公开(公告)日：2023-06-20
申请号：US16534191
申请日：2019-08-07
Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED
Inventor： Huixin Wang , Silin Huang , Sheng Cheng , Hongming Yu
CPC classification number: H01M4/587 , H01M4/364 , H01M4/366 , H01M4/386 , H01M4/525 , H01M4/625 , H01M2004/021
Abstract: A lithium secondary battery is disclosed which includes a cathode having a first cathode region and a second cathode region adjacent to the first cathode region, wherein the second cathode region is adjacent to an uncoated region of the cathode substrate; an anode, the anode having a first anode region and a second anode region adjacent to the first anode region, wherein the second anode region is adjacent to an uncoated region of the anode substrate, wherein a value C1 is a ratio of a direct current resistance value RA1 of the first anode region to a direct current resistance value RC1 of the first cathode region; wherein a value C2 is a ratio of a direct current resistance value RA2 of the second anode region to a direct current resistance value RC2 of the second cathode region; and wherein C2
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公开(公告)号：US11658366B2
公开(公告)日：2023-05-23
申请号：US16672550
申请日：2019-11-04
Applicant: Ningde Amperex Technology Limited
Inventor： Silin Huang , Huixin Wang , Sheng Cheng , Hongming Yu
IPC: H01M50/46 , H01M4/62 , H01M10/0525 , H01M4/02 , H01M50/457 , H01M50/449
CPC classification number: H01M50/461 , H01M4/623 , H01M10/0525 , H01M50/449 , H01M50/457 , H01M2004/027 , H01M2004/028
Abstract: The present application provides an electrochemical device. The electrochemical device, comprising: a positive electrode; a negative electrode; and the separator, disposed between the positive electrode and the negative electrode, wherein the separator comprising a porous substrate, a first coating layer and a second coating layer, the first coating layer and the second coating layer are on a surface of the porous substrate, the first coating layer is disposed on at least one side of the second coating layer, the first coating layer includes a first binder, and the second coating layer includes a second binder, the adhesive force between the first coating layer and the positive electrode or the negative electrode is greater than the adhesive force between the second coating layer and the positive electrode or the negative electrode. The electrochemical device provided by the present application can further improve the cycle performance of the electrochemical device.
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公开(公告)号：US20210057700A1
公开(公告)日：2021-02-25
申请号：US16672550
申请日：2019-11-04
Applicant: Ningde Amperex Technology Limited
Inventor： Silin Huang , Huixin Wang , Sheng Cheng , Hongming Yu
IPC: H01M2/16 , H01M4/62 , H01M10/0525
Abstract: The present application provides an electrochemical device. The electrochemical device, comprising: a positive electrode; a negative electrode; and the separator, disposed between the positive electrode and the negative electrode, wherein the separator comprising a porous substrate, a first coating layer and a second coating layer, the first coating layer and the second coating layer are on a surface of the porous substrate, the first coating layer is disposed on at least one side of the second coating layer, the first coating layer includes a first binder, and the second coating layer includes a second binder, the adhesive force between the first coating layer and the positive electrode or the negative electrode is greater than the adhesive force between the second coating layer and the positive electrode or the negative electrode. The electrochemical device provided by the present application can further improve the cycle performance of the electrochemical device.
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公开(公告)号：US09607777B2
公开(公告)日：2017-03-28
申请号：US14147463
申请日：2014-01-03
Applicant: Ningde Amperex Technology Limited
Inventor： Sheng Cheng , Shaojun Niu , Dongming He , Xiaowen Zhang
IPC: H01M2/18 , H01G11/52 , H01M2/14 , H01M10/052 , H01G11/06
Abstract: The present disclosure provides a separator and an electrochemical device, the separator is provided with a folded structure unit across a widthwise direction of the separator, and an overlapping part of the folded structure unit is filled with an adhesive. When the separator is applied into a production of the electrochemical device, a winding process can be performed as usual. After an electrolyte injection or high temperature aging of the electrochemical device, the adhesive filled in the folded structure unit of the separator may be dissolved into the electrolyte, the folded structure unit can be unfolded to a flat position again, so as to effectively eliminate deformation of the electrochemical device, which may be caused by thermal contraction of the separator, over stress in the separator wound in a cell, or the separator's binding on expansion of negative and positive electrodes, during operation and production of the electrochemical device.
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