Abstract: An electrochemical apparatus, including a housing, an electrode assembly disposed within the housing, and an adhesive component located between the housing and the electrode assembly. The housing includes a first sidewall, and the electrode assembly includes a first side surface adjacent to the first sidewall, where the first side surface includes a second region, a first region, and a third region arranged sequentially along a first direction. The adhesive component includes a first surface and a second surface opposite to each other; the first surface includes a first adhesive zone bonded to the first sidewall; the second surface includes a second adhesive zone bonded to the second region, a third adhesive zone bonded to the third region, and a first non-adhesive zone located between the second adhesive zone and the third adhesive zone. Along a second direction, a projection of the first adhesive zone overlaps with the first non-adhesive zone.

Abstract: An electrochemical apparatus includes a housing, an electrode assembly, a first adhesive member, and a second adhesive member. A first sidewall of the housing includes an internal first surface and an external second surface opposite to each other along a first direction. The electrode assembly is disposed within the housing, and the electrode assembly includes a first side surface. The first adhesive member includes a first side portion and a second side portion opposite each other, where the first side portion includes a first adhesive region bonded to the first surface, and the second side portion includes a second adhesive region, a first non-adhesive region, and a third adhesive region sequentially arranged along a second direction, and the second adhesive region and the third adhesive region are bonded to the first side surface. The second surface is bonded to an external structure through the second adhesive member.

Abstract: An electrochemical apparatus including a housing, an electrode assembly, and an adhesive member. The housing includes a first sidewall, and the electrode assembly is disposed within the housing and includes a first side surface adjacent to the first sidewall, the first side surface including a second region, a first region, and a third region arranged sequentially along a first direction. The adhesive member is located between the housing and the electrode assembly. The adhesive member includes a first side and a second side opposite each other, the first side including a first adhesive zone bonded to the first sidewall, the second side including a second adhesive zone bonded to the second region, a third adhesive zone bonded to the third region, and a first non-adhesive zone located between the second adhesive zone and the third adhesive zone.

Abstract: A battery includes an electrode assembly, a housing, and a terminal post, where the electrode assembly is accommodated in the housing. The housing includes a first wall and a second wall disposed opposite each other along a first direction and includes a peripheral side wall surrounding the first wall and the second wall and disposed therebetween. The first direction is a thickness direction of the battery. The first wall includes a reinforcement portion, where the reinforcement portion protrudes beyond the peripheral side wall. The peripheral side wall includes a top wall and a bottom wall disposed opposite each other along a second direction, where the top wall is provided with a through-hole, and the terminal post is disposed at the through-hole.

Abstract: An electrochemical device includes a housing, a first sealing ring, and an electrode post. The housing includes a cover provided with a through-hole. The cover includes a first wall surface and a second wall surface. The first sealing ring includes a first annular surface and a second annular surface. The first annular surface connects to the first wall surface. The first sealing ring is disposed around a hole axis of the through-hole. The electrode post includes a first part and a second part. The first part is inserted into the through-hole. The second part is connected to an end portion of the first part, the end portion being located in the inner cavity of the housing. A third annular surface includes a first region connected to the second annular surface. The first region includes a first edge and a second edge.

Abstract: An electrochemical apparatus, including a housing. The housing includes a main body part and a sealed part extending outward from an edge of the main body part. The main body part is configured to accommodate an electrode assembly. The sealed part includes a first outer edge, an outer arc edge, and a second outer edge. The outer arc edge connects the first outer edge and the second outer edge. The outer arc edge protrudes toward the main body part. A minimum curvature radius of the outer arc edge is rmin mm, satisfying: rmin?0.3, which can reduce the stress concentration at the outer arc edge of the sealed part under drop conditions, thereby reducing the risk of tear and damage to the sealed part of a battery under drop conditions, which otherwise causes safety accidents.

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.

Abstract: An electrochemical apparatus includes a housing having a cavity and including a wall, where the wall is provided with a stress-weak zone. In this application, the stress-weak zone arranged on the wall of the housing of the electrochemical apparatus is a weak part of the housing. When the electrochemical apparatus generates gas under conditions such as short circuit, high temperature, and overcharge, a pressure inside the housing increases. Under the action of the pressure, the stress-weak zone can form an opening, and the opening allows the inner cavity of the housing to communicate with the external environment in which the electrochemical apparatus is located, to discharge the gas in the inner cavity of the housing, thereby reducing risks of expansion, deformation, or even explosion of the electrochemical apparatus caused by gas generation inside the electrochemical apparatus, and improving safety of the electrochemical apparatus.