Battery separator, method of manufacturing a battery separator, battery, battery pack, and electronic apparatus
AssigneeSony Corporation
InventorsChak Chung Andrew Yu, Takahiro Kawana, Nobuyuki Nagaoka
Life of this patent
Estimating the term…
Abstract
A battery separator includes a porous base material and a heat-resistant layer. The porous base material includes a first surface, a second surface opposed to the first surface, and a hole. The hole is formed in the porous base material and causes the first surface and the second surface to communicate with each other. The heat-resistant layer is configured to cover at least the first surface and a surface of the hole. The heat-resistant layer is formed of an inorganic material and deposited by an atomic layer deposition method.
Claims12
A battery separator, comprising:
- a porous base material including
- a first surface,
- a second surface opposed to the first surface, and
- a hole that is formed in the porous base material and causes the first surface and the second surface to communicate with each other;
- and
- a heat-resistant layer configured to cover at least the first surface and a surface of the hole, the heat-resistant layer being formed of an inorganic material and deposited by an atomic layer deposition method.
A method of manufacturing a battery separator, comprising:
- preparing a porous base material including
- a first surface,
- a second surface opposed to the first surface, and
- a hole that is formed in the porous base material and causes the first surface and the second surface to communicate with each other;
- and
- forming a heat-resistant layer by an atomic layer deposition method, the heat-resistant layer being configured to cover at least the first surface and a surface of the hole and being formed of an inorganic material.
A battery, comprising:
- a positive electrode;
- a negative electrode;
- an electrolyte layer arranged between the positive electrode and the negative electrode;
- and
- a separator including
- a porous base material including a first surface opposed to the positive electrode, a second surface opposed to the negative electrode, and a hole that is formed in the porous base material and causes the first surface and the second surface to communicate with each other, and
- a heat-resistant layer to cover at least the first surface and a surface of the hole, the heat-resistant layer being formed of an inorganic material and deposited by an atomic layer deposition method.
A battery pack, comprising:
- a battery including
- a positive electrode,
- a negative electrode,
- an electrolyte layer arranged between the positive electrode and the negative electrode, and
- a separator including
- a porous base material including a first surface opposed to the positive electrode, a second surface opposed to the negative electrode, and a hole that is formed in the porous base material and causes the first surface and the second surface to communicate with each other, and
- a heat-resistant layer to cover at least the first surface and a surface of the hole, the heat-resistant layer being formed of an inorganic material and deposited by an atomic layer deposition method;
- a control unit configured to control charge and discharge of the battery;
- and
- a package body configured to support the battery and the control unit.
An electronic apparatus, comprising:
- a battery including
- a positive electrode,
- a negative electrode,
- an electrolyte layer arranged between the positive electrode and the negative electrode, and
- a separator including
- a porous base material including a first surface opposed to the positive electrode, a second surface opposed to the negative electrode, and a hole that is formed in the porous base material and causes the first surface and the second surface to communicate with each other, and
- a heat-resistant layer to cover at least the first surface and a surface of the hole, the heat-resistant layer being formed of an inorganic material and deposited by an atomic layer deposition method;
- and
- a power receiving circuit configured to receive power supply from the battery.
Dependencies are inferred from the claim text.