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US 2020/0091469 A1Published application
Secondary battery, battery pack, electric vehicle, electric power storage system, electric power tool, and electronic apparatus
AssigneeMurata Manufacturing Co., Ltd.
InventorKunio SODEYAMA
Life of this patent
Estimating the term…
Abstract
A secondary battery includes a housing member having a bent portion defining an open end, a battery element, a lid member which extends in a cross direction crossing a housing direction of the battery element to the housing member to close the open end of the housing member and has a bottom surface facing the battery element, a top surface opposite to the bottom surface, and a side surface coupled to the bottom surface and the top surface, and a sealing member interposed between the bent portion and the lid member. The bent portion includes a specific bent portion bent along each of the side surface and the top surface of the lid member. A bending ratio R1 (=(L1/D1)×100%) is 10% or more and 13% or less.
Claims14
A secondary battery, comprising:
- a housing member having a bent portion defining an open end;
- a battery element configured to be accommodated in the housing member, wherein the battery element includes a positive electrode, a negative electrode, and an electrolytic solution;
- a lid member which extends in a cross direction crossing a housing direction of the battery element to the housing member to close the open end of the housing member and has a bottom surface facing the battery element, a top surface opposite to the bottom surface, and a side surface coupled to the bottom surface and the top surface;
- and
- a sealing member interposed between the bent portion and the lid member, wherein
- the bent portion includes a specific bent portion bent along each of the side surface and the top surface of the lid member, and
- a bending ratio R1 (=(L1/D1)×100%) calculated based on a first outer diameter D1 (mm) of the housing member specified by the bent portion in the cross direction and a bending length L1 (mm) of the specific bent portion in the cross direction is 10% or more and 13% or less.
4 more elements
A battery pack, comprising:
- a secondary battery;
- a controller configured to control an operation of the secondary battery;
- and
- a switch configured to switch the operation of the secondary battery in accordance with an instruction from the controller,
- the secondary battery including
- a housing member having a bent portion defining an open end,
- a battery element configured to be accommodated in the housing member, wherein the battery element, wherein the battery element includes a positive electrode, a negative electrode, and an electrolytic solution,
- a lid member which extends in a cross direction crossing a housing direction of the battery element to the housing member to close the open end of the housing member and has a bottom surface facing the battery element, a top surface opposite to the bottom surface, and a side surface coupled to the bottom surface and the top surface, and
- a sealing member interposed between the bent portion and the lid member, wherein
- the bent portion includes a specific bent portion bent along each of the side surface and the top surface of the lid member, and
- a bending ratio R1 (=(L1/D1)×100%) calculated based on a first outer diameter D1 (mm) of the housing member specified by the bent portion in the cross direction and a bending length L1 (mm) of the specific bent portion in the cross direction is 10% or more and 13% or less.
8 more elements
An electric vehicle comprising:
- a secondary battery;
- a converter configured to convert electric power supplied from the secondary battery into drive power;
- a driver configured to operate in accordance with the drive power;
- and
- a controller configured to control an operation of the secondary battery,
- the secondary battery including
- a housing member having a bent portion defining an open end,
- a battery element configured to be accommodated in the housing member, wherein the battery element includes a positive electrode, a negative electrode, and an electrolytic solution,
- a lid member which extends in a cross direction crossing a housing direction of the battery element to the housing member to close the open end of the housing member and has a bottom surface facing the battery element, a top surface opposite to the bottom surface, and a side surface coupled to the bottom surface and the top surface, and
- a sealing member interposed between the bent portion and the lid member, wherein
- the bent portion includes a specific bent portion bent along each of the side surface and the top surface of the lid member, and
- a bending ratio R1 (=(L1/D1)×100%) calculated based on a first outer diameter D1 (mm) of the housing member specified by the bent portion in the cross direction and a bending length L1 (mm) of the specific bent portion in the cross direction is 10% or more and 13% or less.
9 more elements
Dependencies are inferred from the claim text.