公开(公告)号：EP4325597A1

公开(公告)日：2024-02-21

申请号：EP22940938.8

申请日：2022-08-29

申请人： Eve Energy Co., Ltd.

发明人： FU, Hongli ,  SUN, Peiling ,  CAO, Lang ,  ZHU, Yuan

IPC分类号： H01M4/134 ,  H01M4/62

摘要： The present application relates to a negative electrode plate and a lithium metal battery. The lithium metal battery includes a steel can; a core disposed inside the steel can, the core is formed by winding a positive electrode plate, a separator, and a negative electrode plate, the negative electrode plate is made of lithium metal, and a metal reinforcement structure is embedded in the negative electrode plate; a negative electrode tab, a first end of the negative electrode tab is connected to the negative electrode plate, and a second end of the negative electrode tab is welded to an inner wall of the steel can; a positive electrode tab, a first end of the positive electrode tab is connected to the positive electrode plate; a cap, a second end of the positive electrode tab is welded to the cap; an insulation assembly arranged at both ends of the core.

公开(公告)号：EP4395021A1

公开(公告)日：2024-07-03

申请号：EP22930474.6

申请日：2022-06-09

申请人： Eve Energy Co., Ltd.

发明人： ZHENG, Zhong ,  CAO, Lang ,  ZHANG, Lixing ,  DENG, Huihui ,  SUN, Peiling ,  ZHU, Yuan

IPC分类号： H01M50/109 ,  H01M4/06 ,  H01M50/466

CPC分类号： Y02P70/50 ,  Y02E60/10

摘要： A button battery, a manufacturing method thereof, and an electronic device are disclosed, the button battery includes a housing including a bottom cover on a side of a negative electrode sheet and a positive electrode cover on a side of a positive electrode sheet; the housing includes the positive electrode sheet, a separator, a carbon foil, and the negative electrode sheet stacked in sequence; the separator has an inverted U-shape, and both sides of the inverted U-shape are bent toward the positive electrode sheet; the button battery is filled with electrolyte. The button battery of the present application is provided with the carbon foil between the negative electrode sheet and the separator, the carbon foil can suppress a reaction of the negative electrode with electrolyte and positive electrode ions, thereby reducing the internal resistance of the button battery and the resistance of the negative electrode surface. Meanwhile, by arranging the carbon foil on the negative electrode surface, the button battery has a double-layer capacitance characteristic to shunt the current on the negative electrode surface, thereby greatly improving the performance of the button battery under high current discharge and the pulse performance at low temperature.

公开(公告)号：EP4411850A1

公开(公告)日：2024-08-07

申请号：EP24711108.1

申请日：2024-02-02

申请人： Eve Energy Co., Ltd.

发明人： HAN, Dandan ,  LIU, Zhihua ,  ZHU, Yuan ,  CAO, Lang ,  SUN, Peiling

IPC分类号： H01M4/06 ,  H01M50/109 ,  H01M6/14

CPC分类号： Y02E60/10 ,  H01M6/14 ,  H01M4/06 ,  H01M50/109

摘要： The present application discloses a button battery. The button battery includes a case 10, a positive electrode powder piece 400, and a current collector 300. The case 10 includes a positive electrode case 100 and a negative electrode case 200 interconnected. The positive electrode case 100 and the negative electrode case 200 are connected to define a cavity 101. The positive electrode powder piece 400 is disposed in the cavity 101. The current collector 300 is disposed in the cavity 101, the current collector 300 and the positive electrode powder piece 400 are stacked, and at least a part of the current collector 300 is embedded into the positive electrode powder piece 400. A side of current collector 300 away from the positive electrode powder piece 400 is contacted with a bottom of the positive electrode case 100.

公开(公告)号：EP4152430A1

公开(公告)日：2023-03-22

申请号：EP20953840.4

申请日：2020-10-16

申请人： Eve Energy Co., Ltd. ,  Eve Hyperpower Batteries Inc.

发明人： DENG, Huihui ,  CAO, Lang ,  SUN, Peiling ,  WANG, Pingao ,  ZHANG, Jun ,  ZHU, Yuan ,  LIU, Jianhua ,  LIU, Jincheng

IPC分类号： H01M4/04

摘要： An extrusion head (1) for molding a pole piece and a molding device comprising same, and a molding method and a preparation method therefor. The extrusion head (1) comprises an extrusion head (1) housing, and a through extrusion channel (6) is provided inside the extrusion head (1) housing in an extrusion direction; and the extrusion channel (6) is divided into a transition cavity (61) and a molding cavity (62) that are in sequential butt joint and communication in the extrusion direction, and the diameter of the annular surface of the inner wall of the transition cavity (61) is gradually reduced in the extrusion direction.