Separator and energy storage device
AssigneeNingde Amperex Technology Limited
InventorsWei Cui, Xinghua Tao, Cong Cheng
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Abstract
A separator includes: a first porous substrate; and a second porous substrate arranged on at least one surface of the first porous substrate; wherein the elongation at break of the second porous substrate is greater than the elongation at break of the first porous substrate in at least one of the machine and transverse directions of the separator. The separator has a high tensile strength and an elongation at break and good heat resistance, and may improve the safety performance of the energy storage device when the separator is applied to the energy storage device.
Claims20
A separator, comprising:
- a first porous substrate;
- and
- a second porous substrate arranged on at least one surface of the first porous substrate;
- wherein, an elongation at a break of the second porous substrate is greater than an elongation at a break of the first porous substrate in at least one of a machine or a transverse directions of the separator;
- wherein the elongation at the break of the second porous substrate is 105% to 800% in the machine and the transverse directions.
An energy storage device, comprising a separator, wherein the separator comprises:
- a first porous substrate;
- and
- a second porous substrate arranged on at least one surface of the first porous substrate;
- wherein, an elongation at a break of the second porous substrate is greater than an elongation at a break of the first porous substrate in at least one of a machine or a transverse directions of the separator;
- wherein the elongation at the break of the second porous substrate is 105% to 800% in the machine and the transverse directions.
Dependencies are inferred from the claim text.