A battery, its packaging method and terminal

Abstract

Embodiments of the present invention provide a battery packaging method and a battery, the battery includes a bare cell and a packaging film, the edge of the bare cell includes at least one first open space, the first open space runs through the thickness direction of the bare cell, There is no bare cell in the first open space, and the packaging film forms a closed space for containing the bare cell. The packaging film forms a first sealing part in the first open space, and the first sealing part does not cover the bare cell. The first sealing part A second open space is enclosed by the packaging film on the side wall of the first open space, and the first open space and the second open space are partially overlapped. On the basis of maintaining the flexibility of the battery shape, the battery reduces the number of cutting and folding operations of the packaging film during the packaging process, and simplifies the packaging process; and there is no need to set large-sized chamfers at the corners of the open space on the edge of the bare cell , to avoid the loss of energy density, while reducing the difficulty of pole piece cutting. The embodiment of the invention also provides a terminal including the battery.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of battery packaging, and in particular, to a battery, a packaging method thereof, and a terminal. Background technique [0002] Lithium-ion batteries used in current electronic devices are typically rectangular in shape. Rectangular batteries have a fixed shape and low flexibility, which will affect the design and arrangement of other components inside the device to a certain extent, and even cause idle space in some application scenarios, resulting in a reduction in the utilization of the internal space of the device. In contrast, special-shaped batteries (the shape of the pole pieces of the battery or the bare cells are irregular shapes) have high shape flexibility, good consistency, and strong designability, and have unique advantages in improving space utilization and optimizing structural design. Advantage. However, the complexity of the shape means that the packaging proces...

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Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a battery packaging method, by retaining the first sealing part produced by the packaging film in the open space on the edge of the bare cell during the packaging process, reducing the number of cutting and folding, to solve the problem to a certain extent The existing special-shaped battery packaging technology requires multiple cutting and folding operations on the packaging film in the opening area, resulting in cumbersome packaging procedures and low packaging efficiency. Large-size chamfers are set at the corners of the area, resulting in waste of space, loss of energy density, and high difficulty in pole piece cutting

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