A power storage device according to the present disclosure includes: an electrode body; and an outer covering can that houses the electrode body. The outer covering can includes a bottom part that includes an exhaust valve. The exhaust valve includes: a pl...

Provided is a cylindrical battery that has improved safety and also suppresses deformation of a bottom part. According to one aspect of the present disclosure, a cylindrical battery comprises an electrode body, an electrolyte, an outer can that is a bottom...

Thermal energy of batteries is efficiently dissipated to outside, achieving high safety. A battery pack includes a core block (10) including battery cells disposed at predetermined positions in a battery holder (2) and a casing accommodating the core block...

A battery pack allows an outer covering case to absorb an impact acting on a core pack housing a plurality of cells, and increases impact strength. Abattery pack includes core pack (2) housing a plurality of cells, and outer case (1) housing core pack (2)....

The purpose of the present disclosure is to provide a nonaqueous electrolyte secondary battery that has high capacity and excellent cycle characteristics. A nonaqueous electrolyte secondary battery according to one embodiment of the present invention is pr...

In a negative electrode for a secondary battery that is an example of an embodiment, a mixture layer contains graphite particles, and has a lower layer arranged on the core body side of the mixture layer and an upper layer arranged on the surface of the mi...

The present invention provides a cylindrical battery in which the opening end of an outer can has an external terminal of a different polarity from a sealing body and easily connectable to an external lead. A cylindrical battery (10) that is one embodiment...

Uneven distribution of current is suppressed even in a condition that semiconductor elements are mounted in a limited area on a circuit board. A power supply device includes a secondary battery cell, charging/discharging FETs (21-28), and a circuit board (...

The present application relates to field of cathode material, and a cathode material and a method for preparing the same, a lithium ion battery provided, where the cathode material includes an active material having a chemical formula Li(NiCoR)MO, where 0....

A fuse element of a SCP is reliably fusion-cut with a simple circuit configuration to interrupt an electric current. In a power supply equipped with a battery unit, a control circuit (7) is configured to control turning on and off of a switch (6) configure...