Abstract: An electronic device includes a battery and a housing whose battery compartment has a main surface and a pair of side surfaces. The main surface is configured to face the bottom surface of the battery and the side surfaces are configured to face the respective side surfaces of the battery. Each of the side surfaces has a guide rail for the battery. Each of the guide rails has a first end at a primary end of the housing and a second end. Each of the guide rails is inclined such that the distance between the first end of the guide rail and the main surface of the battery compartment is greater than the distance at the second end.

Abstract: A battery system may include multiple battery cells grouped into modules. Each battery module may have a diffuser plate to direct the hot gases and molten material that are ejected during cell failure. The gas and material may be directed away from the nearest neighboring cells in the event of a single cell thermal runaway. Residual thermal energy is wicked away, absorbed or contained to keep heat away from the neighboring cells. These and other features may manage the blast energy and residual thermal energy of a single cell failure event. This may prevent a cascading failure of the larger battery system, thereby mitigating the risk of injury to personnel and property.

Abstract: A battery pack is provided. The battery pack includes a first partition piece, a battery row, and a shielding member. The first partition piece is located between two batteries adjacent to each other in a first direction in the battery row. An upper surface of the first partition piece is lower than an upper surface of a top cover. A recess is formed between the battery row and the first partition piece. The shielding member includes a first shielding portion and a second shielding portion. The first shielding portion overlays all explosion-proof valves of the battery row. A passage is disposed between the first shielding portion and the upper surface of the battery row. The passage is configured to guide a fluid to flow along the first direction and is provided with a downward opening. The second shielding portion closes off a part of the opening facing the recess directly.

Abstract: Provided is a lithium secondary battery comprising a cathode, an anode, and a non-aqueous electrolyte having lithium ion conductivity. A lithium metal is precipitated on a surface of the anode during charge of the lithium secondary battery. The lithium metal is dissolved from the surface of the anode in the non-aqueous electrolyte during discharge of the lithium secondary battery. The non-aqueous electrolyte contains a solvent and a lithium salt. The solvent includes a fluorinated ether. The fluorinated ether has a fluorination ratio of more than 0% and not more than 60%.