Entity

Time filter

Source Type


Patent
NEC Energy Devices Ltd. | Date: 2014-02-14

Provided is a battery pack capable of solving a problem in which driving becomes unstable. Switches (


Patent
Nec Energy Devices Ltd. | Date: 2014-03-18

A battery production method includes: preparing a battery element in which a positive electrode that includes a positive electrode current collector tab, and a negative electrode that includes a negative electrode current collector tab are stacked or wound through a separator; connecting a positive electrode pulled-out tab to the positive electrode current collector tab and connecting a negative electrode pulled-out tab to the negative electrode current collector tab; enclosing the battery element, positive electrode current collector tab and negative electrode current collector tab in a flexible exterior member, with the positive electrode pulled-out tab and negative electrode pulled-out tab being pulled out; forming a reference portion on the exterior member; and boring, in the positive electrode pulled-out tab and negative electrode pulled-out tab being pulled out of the exterior member, holes that are to be used for fixation, based on the reference portion after formation.


Patent
Nec Energy Devices Ltd. | Date: 2014-06-27

Battery cell


The exemplary embodiment has an object to provide a nonaqueous electrolyte solution having a flame retardancy over a long period and having a good capacity maintenance rate. The exemplary embodiment is a nonaqueous electrolyte solution containing a lithium salt, at least one oxo-acid ester derivative of phosphorus selected from compounds represented by a predetermined formula, and at least one disulfonate ester selected from a cyclic disulfonate ester and a linear disulfonate ester represented by the predetermined formulae.


Patent
Nec Energy Devices Ltd. | Date: 2014-04-17

Provided is a battery module whose layout for accurately detecting the average of entire temperature information is realized by a small number of temperature sensors. A battery module

Discover hidden collaborations