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Battery and packaging method thereof

A cell packaging and battery technology, applied in secondary batteries, battery pack components, non-aqueous electrolyte batteries, etc., can solve problems such as reducing energy density, damage, and large thickness, and achieve the effect of improving efficiency

Pending Publication Date: 2020-09-11
ENVISION DYNAMICS TECH (JIANGSU) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this packaging method will result in weaker strength and greater thickness of the folded edge, and a protruding horn will be formed at the junction of the folded edge and the positive and negative ear side fine seals, commonly known as "dog legs", such as Figure 4 The protruding horn A of the battery 500 shown has a risk of damage during subsequent module assembly, which causes waste of space and reduces energy density

Method used

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  • Battery and packaging method thereof
  • Battery and packaging method thereof
  • Battery and packaging method thereof

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Embodiment Construction

[0033] Various embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so as to better understand the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but only to illustrate the essence of the technical solutions of the present invention.

[0034] In the following description, for the purposes of explaining the various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that an embodiment may be practiced without one or more of these specific details. In other instances, well-known devices, structures and techniques associated with the present application may not have been shown or described in detail in order to avoid unnecessarily...

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Abstract

The invention discloses a battery and a packaging method thereof. The battery comprises a battery cell and a packaging piece for packaging the battery cell. The packaging piece is provided with a battery cell packaging groove. The battery cell packaging groove is composed of a first packaging groove and a second packaging groove which are stacked together. A first edge part and a second edge partare respectively arranged on one pair of opposite sides of the battery cell packaging groove, a third edge part and a fourth edge part are respectively arranged on the other pair of opposite sides ofthe battery cell packaging groove, and the positive electrode and the negative electrode of the battery are respectively arranged on the two sides where the third edge part and the four edge parts arelocated. The first edge part and the second edge part are bent relative to the plane where the first packaging groove and the second packaging groove are connected. According to the battery packagingtechnology, the module efficiency, the space utilization rate and the energy density of the battery can be improved.

Description

technical field [0001] The present invention relates to batteries, in particular to battery packaging. Background technique [0002] Soft-pack lithium-ion batteries are favored due to their high energy density, good safety, and light weight. They have been widely used in 3C digital electronics, pure electric vehicles, and hybrid electric vehicles. Soft pack batteries are made of aluminum-plastic composite film as packaging material. Therefore, the packaging structure and process of the aluminum-plastic composite film determine the packaging reliability, service life, and safety of the pouch battery. In addition, after the pouch cell package is precisely cut, the cut edge will expose the aluminum foil, which may easily cause the cell to corrode or short circuit with the outside world. It is necessary to fold and insulate the cut edge of the cell. [0003] At present, the packaging of soft-pack lithium-ion batteries is generally formed by stamping aluminum-plastic composite ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/02H01M10/0525H01M10/058
CPCH01M10/0525H01M10/058Y02E60/10Y02P70/50
Inventor 倪炼山林玉春陶亮王勇汤继磊
Owner ENVISION DYNAMICS TECH (JIANGSU) CO LTD
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