Abstract: An electrode assembly is formed by winding a positive electrode plate, a separator, and a negative electrode plate that are stacked. The positive electrode plate includes a positive tab, a positive current collector, and a positive active material layer. A thickness of the positive current collector is T1, and a width of the positive current collector is W1. Along a first direction, a distance from the positive tab to a first termination end is A. Along a second direction, a distance from the positive tab to a first start end is B. The negative electrode plate includes a negative tab, a negative current collector, and a negative active material layer. A thickness of the negative current collector is T2, and a width of the negative current collector is W2. Along the first direction, a distance from the negative tab to the second termination end is C. Along the second direction, a distance from the negative tab to the second start end is D, satisfying: 0.8?[A/(T1×W1)+D/(T2×W2)]/[B/(T1×W1)+C/(T2×W2)]?1.2.

Abstract: An electrochemical apparatus, including a first housing, a first connector connected to the first housing, an electrode plate assembly, a first tab, and a second tab. A first electrode plate of the electrode plate assembly is located on a winding inner side. The first tab is connected to a first region of the first electrode plate, and includes a second region connected to the first housing. The second tab is connected to a third region of a second electrode plate. The first connector includes a fourth region. A winding length of the first region extending beyond the third region is less than one turn. An angle formed by rotating the third region to the first region around a winding center is ?, 45°???135°. An angle formed by rotating the first region to the fourth region around the second region is ?, ?60°???45°.

Abstract: An electrochemical apparatus, including a housing and an electrode assembly. The housing includes a first housing portion and a second housing portion with opposite polarities. The electrode assembly includes an electrode plate assembly, a first tab, and a second tab, where the electrode plate assembly includes a first electrode plate and a second electrode plate arranged in a wound manner, the first tab is connected to the first electrode plate and the first housing portion, and the second tab is connected to the second electrode plate and the second housing portion. The electrochemical apparatus further includes a first connector, the first connector including a first arc portion; and/or, the electrochemical apparatus further includes a second connector, the second connector including a second arc portion.

Abstract: A secondary battery includes an electrode assembly. Along a winding direction of the electrode assembly, a distance between a first winding start end of a first electrode plate and a first tab is L1, and a distance between a second winding start end of a second electrode plate and a second tab is L2, satisfying: 0.8?L1/L2?1.2. The first electrode plate includes a first blank foil region. The first blank foil region is a winding end section of the first electrode plate. The second electrode plate includes a second blank foil region. The second blank foil region is a winding end section of the second electrode plate. The first tab is connected to the first blank foil region, and the second tab is connected to the second blank foil region. A first insulation layer is provided on the first blank foil region.

Abstract: A novel yeast strain and methods of use thereof for robust biosynthesis of demethylated polymethoxy flavones are disclosed. Also provided are method of administering demethylated polymethoxy flavones for the treatment of obesity and inflammatory a disease.

Abstract: An electrochemical apparatus, including a housing, an electrode assembly, a first tab, a first connecting member, a second tab, and a second connecting member. The housing includes a top wall, a side wall, and a bottom wall, the top wall being provided with a first electrode. The electrode assembly includes a first electrode plate and a second electrode plate. The first tab is connected to the first electrode plate and the first electrode, and the first connecting member is connected to the first electrode. The second tab is connected to the second electrode plate and the housing, and the second connecting member is connected to the housing. When the electrochemical apparatus is in a charging/discharging state, a magnetic field generated by the electrochemical apparatus is weakened, reducing electromagnetic interference of the electrochemical apparatus to an electric device.

Abstract: An electrochemical apparatus, including a housing, an electrode assembly accommodated in the housing, a first tab, and a second tab. The housing includes a top wall, a side wall, and a bottom wall, where the top wall is provided with a first electrode. The electrode assembly includes a first electrode plate and a second electrode plate. The first tab is connected to the first electrode plate and the first electrode. The second tab is connected to the second electrode plate. When viewed in a direction perpendicular to the top wall, an angle between a length direction of the first tab and a length direction of the second tab is denoted as ?, satisfying: 0°???60°. When the electrochemical apparatus is in a charging/discharging state, a magnetic field generated by the electrochemical apparatus can be weakened.

Abstract: An electrochemical apparatus, including a winding-structured electrode assembly, an end of a first electrode plate is provided with a first zone connected to a first tab, an end of a second electrode plate is provided with a second zone connected to a second tab. Along a winding direction from inside to outside, the first electrode plate is located on the inner side of the electrode assembly relative to the second electrode plate, and the first zone exceeds the second zone by a winding length of less than one turn. An angle between a half line from a winding center to a center of the first zone and a half line from the winding center to a center of the second zone is ?, 30°???270°. An effective current path length of the outermost turn of the first electrode plate is extended, thereby reducing a magnetic field produced by the electrode assembly.