CATL Patente

Provided are an electrode assembly (20), a battery cell (100), a battery (200) and an electrical device (1000). The electrode assembly (20) comprises a first electrode plate (21), a second electrode plate (22) and a separator (23). The second electrode plate (22) is stacked with the first electrode plate (21) in the thickness direction of the first electrode plate (21), and the polarity of the second electrode plate (22) is opposite to that of the first electrode plate (21). The separator (23) isolates the first electrode plate (21) from the second electrode plate (22), and is stacked with the first electrode plate (21) in the thickness direction of the first electrode plate (21). The separator (23), the first electrode plate (21) and the second electrode plate (22) are wound to form a whole. At a starting end (201) and/or an ending end (202) of the winding of the electrode assembly (20), at least one of the first electrode plate (21) and the second electrode plate (22) is fixed to the separator (23) by means of a connector (24).

The present application provides a battery cell (20), a battery (100), and a power consuming apparatus, relating to the field of batteries. The battery cell (20) includes an electrode terminal (213), an electrode assembly (22), and an adapter piece (23). The adapter piece (23) connects the electrode terminal (213) and the electrode assembly (22). The adapter piece (23) includes a main body region (231) and a thinned region (232) that are connected. A thickness of the thinned region (232) is less than a thickness of the main body region (231). The thinned region (232) is configured to be welded to the electrode terminal (213). This can solve the problem that other parts are easily damaged during a process of welding the adapter piece (23) and the electrode terminal (213).

A winding device, a battery processing device, and a battery production line are provided, belonging to the technical field of battery manufacturing. The winding device is used for producing an electrode assembly, the electrode assembly comprising a first electrode plate, a second electrode plate, a first separator and a second separator. The winding device comprises: a first feeding mechanism, a second feeding mechanism, a third feeding mechanism, a fourth feeding mechanism, a first combining mechanism, a winding mechanism and a first detection apparatus. The first combining mechanism is used for combining incoming materials comprising at least the first electrode plate, the first separator and the second electrode plate into a first composite plate. The winding mechanism is located downstream of the first combining mechanism, and is used for winding an incoming material comprising at least the first composite plate to form the electrode assembly. The first detection apparatus is located between the first combining mechanism and the winding mechanism, and is used for detecting the first composite plate.

Embodiments of the present disclosure provide a battery and an electric apparatus. The battery comprises a container and a battery cell; a containment cavity is formed in the container; the battery cell is arranged in the containment cavity, and the container is provided with a clearance area; the clearance area protrudes outward in a direction away from the battery cell and forms a protruding platform, so that a corresponding inner wall of the containment cavity is recessed to form an accommodating slot; a protrusion is formed on an outer surface of the battery cell, and at least a portion of the protrusion is located in the accommodating slot.

The present application provides a transient voltage support method and apparatus for an energy storage converter, a device, and a storage medium, relating to the technical field of grid-connected conversion. The transient voltage support method for the energy storage converter includes: obtaining preset reference value data and output electrical information of the energy storage converter; obtaining active power information, reactive power information, and voltage amplitude information of a grid connection point in response to the output electrical information; and obtaining grid connection control data of the energy storage converter in response to one or more of the preset reference value data, the active power information, the reactive power information, and the voltage amplitude information, and controlling the energy storage converter to perform transient voltage support control during grid connection conversion through the grid connection control data. The method can enhance the transient voltage support capability of the energy storage converter and improve the stability of grid connection control.

The present application discloses a battery cell (12), a battery (100), and an electric device, pertaining to the field of battery technology. The battery cell (12) includes a housing (121), an electrode terminal (123), and a fixing member (125). The housing (121) includes a first wall (128), and the first wall (128) is provided with a first through hole (1281). The electrode terminal (123) includes a main body (1231) and a step portion (1232), where at least a portion of the main body (1231) passes through the first through hole (1281), the step portion (1232) and the main body (1231) are integrally formed, the step portion (1232) protrudes from a peripheral surface of the main body (1231), and the step portion (1232) is located on an outer side of the first wall (128). The fixing member (125) is made of a metal material. The fixing member (125) is provided with a second through hole (1251) for the main body (1231) to pass through. In a thickness direction of the first wall (128), at least a portion of the fixing member (125) is located between the first wall (128) and the step portion (1232) and abuts against the step portion (1232). In the thickness direction of the first wall (128), the main body (1231) has a first end surface facing away from an interior of the housing (121), the fixing member (125) has a second end surface facing away from the first wall (128), and the first end surface extends beyond the second end surface. The energy density of the battery (100) is increased.

Embodiments of the present disclosure provide a battery cell, a cover plate assembly, a battery, and an electrical device. The battery cell includes a housing and an electrode assembly; the housing is provided with a mounting cavity, and the electrode assembly is arranged in the mounting cavity; an avoidance area is arranged on a first wall of the housing; the side of the avoidance area facing the electrode assembly is recessed to form an avoidance slot, and the side of the avoidance area away from the electrode assembly protrudes out to form a protrusion; and a part of the electrode assembly extends into the avoidance slot.

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A battery (10) is provided. The battery (10) comprises an accommodation housing (11) and a battery assembly (12); the accommodation housing (11) is provided with an accommodation cavity (111a), and the accommodation housing (11) comprises a first housing wall (111); the battery assembly (12) is accommodated in the accommodation cavity (111a), and the battery assembly (12) comprises a protruding part (12a); and the first housing wall (111) is provided with an accommodation portion (111b), and at least part of the protruding part (12a) is accommodated in the accommodation portion (111b).

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