Multi-layer structure flexible battery, manufacturing method and electric equipment thereof
A flexible battery and multi-layer structure technology, which is applied in the manufacture of electrolyte batteries, batteries, secondary batteries, etc., can solve the problems such as the shedding of the active material film layer of the pole piece, the large stress of the pole piece, and the impact on the charging and discharging function of the battery. Effect of peeling and reducing interfacial stress
Pending Publication Date: 2022-05-27
晨柔点智能科技(北京)有限公司
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Problems solved by technology
[0003] In the existing flexible lithium-ion battery system, when the battery is used in a special scene such as bending, the active material film layer in the bending area is prone to fall off from the current collector, especially when the battery thickness is greater than 300um, be
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[0027] In order to better illustrate this embodiment, some components in the drawings may be omitted, enlarged or reduced, which do not represent the size of the actual product; for those skilled in the art, some well-known structures and their descriptions in the drawings may be omitted. understandable. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations. The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.
[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present inventio...
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Abstract
The invention discloses a multi-layer structure flexible battery, a manufacturing method and electric equipment thereof. The multi-layer structure flexible battery comprises a stacking structure formed by stacking a soft polymer layer and a battery unit, wherein the battery unit comprises a positive current collector layer, a positive material layer, a diaphragm, a negative current collector layer and a negative material layer; the diaphragm is arranged between the positive electrode material layers and the negative electrode material layers, and the positive electrode material layers or the negative electrode material layers are distributed at intervals along the horizontal direction; therefore, on one hand, in the repeated bending process of the battery, the internal stress of the battery can be effectively released through the soft polymer layer, and the stress in the positive electrode material layer, the negative electrode material layer, the negative electrode current collector layer and the positive electrode current collector layer is reduced, so that the whole battery has flexibility; on the other hand, the positive electrode material layers and the negative electrode material layers are distributed at intervals along the horizontal direction, so that the interface stress between the positive and negative electrode material layers and the positive and negative electrode current collector layers can be reduced to inhibit stripping.
Description
technical field [0001] The invention relates to the technical field of energy storage devices, in particular to a flexible battery with a multi-layer structure, a manufacturing method and electrical equipment thereof. Background technique [0002] With the rapid development of mobile devices and wearable devices, these devices put forward higher requirements for the flexibility of the batteries they use. [0003] In the existing flexible lithium-ion battery system, when the battery is used in special scenarios such as bending, the pole piece is prone to the phenomenon that the active material film layer falls off the current collector in the bending area, especially when the thickness of the battery is greater than 300um, bending As a result, the internal stress of the pole piece is relatively large, which in turn affects the charging and discharging function of the battery. Therefore, to fundamentally realize the construction of the flexible electrode, higher requirements a...
Claims
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Login to view more IPC IPC(8): H01M10/0525H01M10/058H01M10/42
CPCH01M10/0525H01M10/058H01M10/4235H01M2220/30Y02P70/50
Inventor 廖湘标宋清泉陈曦
Owner 晨柔点智能科技(北京)有限公司
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