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 battery element including a positive electrode, a negative electrode, and an electrolytic solution, a housing member having an open end and configured to accommodate the battery element, and a safety valve mechanism attached to the housing member and configured to close the open end. The safety valve mechanism includes a closing member and a coupling member disposed between the battery element and the closing member. The coupling member is electrically coupled to both of a wound electrode body and the closing member, and has a coupling portion physically coupled to the closing member, and a groove is provided in at least part of a peripheral region of the coupling portion.
Claims16
A secondary battery, comprising:
- a battery element including a positive electrode, a negative electrode, and an electrolytic solution;
- a housing member having an open end and configured to accommodate the battery element;
- and
- a safety valve mechanism attached to the housing member and configured to close the open end, wherein
- the safety valve mechanism includes
- a closing member configured to close the open end, and
- a coupling member disposed between the battery element and the closing member,
- wherein the coupling member is electrically coupled to both of a wound electrode body and the closing member,
- wherein the coupling member has a coupling portion physically coupled to the closing member, and
- wherein a groove is provided in at least part of a peripheral region of the coupling portion.
A battery pack, comprising:
- a secondary battery;
- a controller configured to control 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, wherein
- the secondary battery includes
- a battery element including a positive electrode, a negative electrode, and an electrolytic solution,
- a housing member having an open end and configured to close the battery element, and
- a safety valve mechanism attached to the housing member and closing the open end, and
- the safety valve mechanism includes
- a closing member configured to close the open end, and
- a coupling member disposed between the battery element and the closing member,
- wherein the coupling member is electrically coupled to both of a wound electrode body and the closing member,
- wherein the coupling member has a coupling portion physically coupled to the closing member, and
- wherein a groove is provided in at least part of a peripheral region of the coupling portion.
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 operation of the secondary battery, wherein
- the secondary battery includes
- a battery element including a positive electrode, a negative electrode, and an electrolytic solution,
- a housing member having an open end and configured to accommodate the battery element, and
- a safety valve mechanism attached housing member and configured to close the open end, and
- the safety valve mechanism includes
- a closing member configured to close the open end, and
- a coupling member disposed between the battery element and the closing member,
- wherein the coupling member is electrically coupled to both of a wound electrode body and the closing member,
- wherein the coupling member has a coupling portion physically coupled to the closing member, and
- wherein a groove is provided in at least part of a peripheral region of the coupling portion.
Dependencies are inferred from the claim text.