CATL Patente

Zusammenfassung wird geladen …

A battery and an electrical device. The battery comprises a case (10), a connector (30) and at least one battery cell (20), wherein the at least one battery cell (20) is located in the case (10); and the connector (30) comprises a first connecting portion (31) and a second connecting portion (32) connected to each other, the first connecting portion (31) being fixedly connected to the at least one battery cell (20), and the second connecting portion (32) being fixedly connected to the case (10), so that the connector (30) can stably connect the battery cell (20) and the case (10) together, the connection reliability of the battery cell (20) and the case (10) is improved, and the structural strength and rigidity of the battery are improved, thereby improving the use reliability of the battery, and prolonging the service life of the battery.

A battery and an electric device. A battery (1100) comprises a box body (10), insulating members (30), and at least one battery cell (20). The box body (10) comprises first side beams (121) and second side beams (122), and the first side beams (121) and the second side beams (122) are connected and define an accommodating space (101). The at least one battery cell (20) is located in the accommodating space (101), battery cells adjacent to the first side beams (121) are first battery cells (201), the maximum area surface of each first battery cell (201) is a first surface (21), and the first surface (21) of the first battery cell (201) faces the corresponding first side beam (121). The insulating members (30) are located in the accommodating space (101), and each insulating member (30) is provided between the first battery cells (201) and the corresponding first side beam (121), so that when the first side beam (121) is impacted, the first surfaces (21) of the first battery cells (201) bear impact, reducing the impact deformation of the first battery cells (201), reducing the short-circuit risk of the first battery cells (201), thereby improving the use reliability of the battery (1100).

The present application discloses a battery and an electric device. The battery comprises a case, a heat exchange assembly, and at least one battery cell; the case comprises a plurality of first side beams, and the plurality of first side beams are connected to define a first accommodating cavity; the at least one battery cell is located in the first accommodating cavity; the heat exchange assembly is located in the first accommodating cavity, and comprises at least one heat exchange piece used for exchanging heat with the battery cell; and an accommodating slot is formed in at least one first side beam, and the at least one heat exchange piece is at least partially accommodated in the accommodating slot. In this way, the internal space of the case is saved, the space utilization rate of the battery is improved, and the structural compactness of the battery is improved, thereby improving the volumetric energy density of the battery.

Provided are a battery (100) and an electrical apparatus, which are applicable to the technical field of battery (100). The electrical apparatus includes the battery (100), the battery (100) including a battery unit (10) and a box body (20), where the battery unit (10) includes at least one battery cell (1). The box body (20) is provided with two first walls (21) opposite to each other along a first direction (Y), the two first walls (21) being each connected with a first connection member (22) configured to be connected to an external device, where in the first direction (Y), the battery unit (10) is disposed between the two first walls (21) and is position-limited by the first walls (21). In a case where the first connection member (22) is connected to the external device, the external device can constrain relative positions of the two first walls (21) in the first direction (Y), such that the two first walls (21) can constrain the battery unit along the first direction (Y) to effectively resist the expansion of the battery cell (1) and to reduce or eliminate the provision of structures such as an expansion beam, which helps to reduce the cost of the battery (100).

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

The present application provides a battery cell, a battery, and an electrical apparatus, which belongs to the technical field of batteries. The battery cell includes a shell, the shell has a first wall and a second wall connected to each other, the first wall is provided with a first groove, the first wall is configured to be capable of rupturing along at least a part of the first groove during pressure relief of the battery cell, so as to release the internal pressure of the battery cell, the second wall is located on one side of the first wall in a first direction, the first groove includes a first groove segment, and the first groove segment and the second wall are arranged in the first direction. The first wall is also provided with a second groove, in the first direction, the second wall has a first outer surface facing away from an interior of the shell, and a projection of the second groove in a thickness direction of the first wall is located between the first outer surface and a projection of the first groove segment in the thickness direction of the first wall, so that the second groove can absorb the excess material from extrusion of the first groove segment during a forming process of the first groove segment, so as to alleviate a phenomenon that the battery cell partially arches or planeness of the first wall is reduced.

The present application provides a battery cell, a battery and an electrical device, and relates to the technical field of batteries. The battery cell includes a shell and a pressure relief component; the shell includes a first wall portion; the pressure relief component is arranged on the first wall portion, a first weak portion of the pressure relief component defines at least one predetermined pressure relief region, and the pressure relief component is configured to be capable of rupturing along at least part of the first weak portion when the battery cell is subjected to pressure relief; in the width direction of the first wall portion, the size of the first wall portion is W, the first weak portion includes at least one first weak section, and the area of the cross section, perpendicular to an extension direction, of the first weak section is S<1>, 10mm≤W≤100mm, 0.006mm<2>≤S<1>≤0.15mm<2>. The risk of liquid leakage caused by the phenomenon that the pressure relief component is prematurely actuated or ruptures due to fatigue and the like after the battery cell is used for a long time can be reduced, the risks of bursting, explosion and the like of the shell of the battery cell caused by untimely pressure relief of the pressure relief component can be further reduced, and the operational reliability of the battery cell can be improved.

Embodiments of the present application provide a battery cell, a battery, and an electrical device. The battery cell includes a shell and a pressure relief component, where the pressure relief component is arranged on a first wall portion of the shell. The pressure relief component is provided with a first groove and a second groove, the first groove defines at least one predetermined pressure relief region, the pressure relief component is configured to be able to split along at least a part of the first groove when the battery cell releases pressure, the pressure relief component has a first surface and a second surface opposite to each other, the second groove is arranged in the first surface, and the second groove is configured to guide at least a part of the predetermined pressure relief region to flip. The second groove includes a first groove side surface and a second groove side surface arranged opposite to each other, the first groove side surface is closer to the predetermined pressure relief region than the second groove side surface, and an angle formed between the first groove side surface and the first surface is less than an angle formed between the second groove side surface and the first surface. The risk of the predetermined pressure relief region being opened prematurely due to poor surface flatness can be reduced, thereby prolonging the service life of the battery cell.