阅读说明：本技术 电化学装置及电子装置 (Electrochemical device and electronic device ) 是由 江静 于 2020-03-25 设计创作，主要内容包括：一种电化学装置,包括电极组件,电极组件包括第一极片和电连接第一极片的第一极耳组,电极组件的一端包括复用区域。第一极片包括位于第一极片端部的第一区域及连接第一区域的第二区域,第一区域的厚度小于第二区域的厚度,第一区域设置于复用区域内。第一极耳组包括位于第一极耳端部的第一连接部和连接第一连接部并位于电极组件侧面的第一弯折部,第一弯折部设置于复用区域内。本申请还提供应用所述电化学装置的电子装置。本申请的电化学装置一方面可以改善界面接触效果,降低析锂风险；另一方面可以充分利用电化学装置内部空间,提升能量密度。(An electrochemical device includes an electrode assembly including a first pole piece and a first pole ear set electrically connected to the first pole piece, one end of the electrode assembly including a multiplexing zone. The first pole piece comprises a first area and a second area, the first area is located at the end portion of the first pole piece, the second area is connected with the first area, the thickness of the first area is smaller than that of the second area, and the first area is arranged in the multiplexing area. The first tab group comprises a first connecting part and a first bending part, wherein the first connecting part is positioned at the end part of the first tab, the first bending part is connected with the first connecting part and positioned on the side surface of the electrode assembly, and the first bending part is arranged in the multiplexing area. The present application also provides an electronic device using the electrochemical device. The electrochemical device can improve the interface contact effect and reduce the risk of lithium precipitation; on the other hand, the internal space of the electrochemical device can be fully utilized, and the energy density is improved.)

An electrochemical device comprising an electrode assembly comprising a first pole piece and a first pole ear set electrically connected to the first pole piece, wherein,

one end of the electrode assembly includes a multiplexing region;

the first pole piece comprises a first area and a second area, the first area is located at one end of the first pole piece, the second area is connected with the first area, the thickness of the first area is smaller than that of the second area, and the first area is arranged in the multiplexing area;

the first tab group comprises a first connecting part and a first bending part, the first connecting part is located at one end of the first tab, the first bending part is connected with the first connecting part and located on the side face of the electrode assembly, and the first bending part is arranged in the multiplexing area.

The electrochemical device of claim 1, wherein the electrode assembly further comprises a second pole piece and a second pole ear set electrically connected to the second pole piece;

the second pole piece comprises a third area and a fourth area, the third area is located at one end of the second pole piece, the fourth area is connected with the third area, the thickness of the third area is smaller than that of the fourth area, and the third area is arranged in the multiplexing area;

the second electrode lug group comprises a second connecting part and a second bending part, the second connecting part is located at one end of the second electrode lug, the second bending part is connected with the second connecting part and located on the side face of the electrode assembly, and the second bending part is arranged in the multiplexing region.

The electrochemical device according to claim 2, wherein the first bent portion and the second bent portion are located at opposite sides of the electrode assembly, respectively.

The electrochemical device of claim 2, wherein the first pole piece is disposed on the multiplexing region for a length greater than a length of the second pole piece disposed on the multiplexing region.

The electrochemical device according to claim 1, wherein a width of the first region is not less than a length of the first bent portion.

The electrochemical device according to claim 1, wherein, in a thickness direction of the electrochemical device, a thickness of the first bent portion is h1, a sum of thicknesses of the first region is h3, and a sum of thicknesses of the second region is h2, which satisfy a relation: h1 is less than or equal to (h2-h 3).

The electrochemical device according to claim 6, further comprising an interposer, wherein a first end of the interposer is electrically connected to the first bent portion, and the first end is not bent.

The electrochemical device according to claim 7, wherein surfaces of the first bent portion and the first end portion are provided with an insulating layer.

The electrochemical device of claim 7, wherein the first end portion has a thickness h4 and a number n4, which satisfy the relationship: h4 Xn 4+ h1 is less than or equal to (h2-h 3).

An electronic device comprising the electrochemical device according to any one of claims 1 to 9.