Abstract: An electrochemical apparatus, including an electrode assembly, which includes an electrode plate assembly, a first tab, and a second tab. A first electrode plate includes a first current collector and a first active material layer, a first region of a winding tail section of the first current collector is connected to the first tab. A second electrode plate includes a second current collector and a second active material layer, a second region of a winding tail section of the second current collector is connected to the second tab. A sum of equivalent magnetic field strengths of the first current collector F1 and a sum of equivalent magnetic field strengths of the second current collector F2 satisfy: |F1?F2|?4×10?5, which can better reduce an axial magnetic field at an end face of a wound structure, thereby further reducing interference of the electrochemical apparatus to the electrical device.

Abstract: An electrochemical apparatus includes a housing, an electrode assembly, and a first adhesive component. The electrode assembly is disposed within the housing. The electrode assembly includes a first side surface and a second side surface opposite each other along a first direction, and a third side surface and a fourth side surface opposite each other along a second direction. The second direction is perpendicular to the first direction. The first adhesive component includes a first side portion and a second side portion opposite each other. The first side portion includes a first adhesive region, a first non-adhesive region, and a second adhesive region arranged sequentially. The first adhesive region is adhered to the first side surface. The second adhesive region is adhered to the second side surface. The second side portion includes a third adhesive region. The third adhesive region is adhered to the housing.

Abstract: The present disclosure provide a battery shell assembly and a lithium-ion battery. The battery shell assembly includes a shell, a pole and a connection terminal. The shell is formed with an accommodating cavity. The pole is disposed at the first end of the shell and is insulatively connected to the shell. The connection terminal is disposed on one side of the pole away from the shell. The connection terminal has a first welding portion and a second welding portion. The second welding portion is protrudingly disposed on one side of the first welding portion away from the pole. The first welding portion is electrically connected with the pole. The second welding portion is disposed to be electrically connected with an external circuit.

Abstract: The present disclosure relates to an aqueous formulation of an oil-soluble corrosion inhibitor, and a preparation method and a regeneration method thereof.

Abstract: The application provides a power amplification circuit, a radio frequency generation device, and a communication system. The power amplification circuit includes a first primary amplification circuit, a second primary amplification circuit, a first secondary amplification circuit, a second secondary amplification circuit, a first coupler, a second coupler, a first combiner, and a second combiner. An inter-frequency power splitting characteristic is implemented after a signal passes through the first coupler and the second coupler. A bandwidth of the first primary amplification circuit and a bandwidth of the second primary amplification circuit are less than a bandwidth of the first secondary amplification circuit and a bandwidth of the second secondary amplification circuit. By narrowing the bandwidths of the primary amplification circuits, design complexity is reduced. In the application, it may be easier to design a power amplifier with a large bandwidth, a large back-off amount, and high efficiency.

Abstract: Wave power generation device and sea farm are provided. The wave power generation device includes a flexible mat, a transmission module and an energy conversion module. The flexible mat has at least three vertices, and can be spread by outward tensional forces applied on the vertices. At least one of the vertices is connected with the transmission module. The energy conversion module is connected to the transmission module, to partially convert mechanical energy of the flexible mat produced under an action of wave surge into electrical energy. The flexible mat and the transmission module are cooperated to enable the flexible mat to be sufficiently spread to absorb the wave energy under the action of wave undulation of various frequencies and directions.

Abstract: This disclosure relates to the field of optical communication technology and provides a high-isolation light source filling device in a wavelength division multiplexing system and method thereof. The light source filling device comprises a multiplexing WSS and demultiplexing WSS, wherein a filling light source is arranged on an output port carrying no service, of the demultiplexing WSS, and the filling light source guides filling light into the output port carrying no service; the filling light is transmitted through a second common port of the demultiplexing WSS or a light splitting device arranged on a first common port of the demultiplexing WSS, and the filling light transmitted through the demultiplexing WSS is guided into an input port carrying no service, of the multiplexing WSS. In this disclosure, it achieves the filling of high-isolation wide-spectrum noise light, and on the other hand, it does not add additional filtering devices.

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: 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 lifting and placing caster includes a mounting seat, a mounting frame, a swing rod and a limiting rod. One end of the mounting frame is rotatably connected to the mounting seat. The mounting frame has a roller and a first rotating shaft. The mounting frame has a strip through hole throughout which the first rotating shaft is disposed. The first rotating shaft can reciprocate in an extension direction of the strip through hole. One end of the swing rod is rotatably connected to the mounting seat, and the other end of the swing rod is rotatably connected to the first rotating shaft. The limiting rod is rotatably connected to the mounting frame. The roller can be driven to switch between a first position and a second position through the rotation of the mounting frame.