Fire protection device with composite system, composite system and battery pack with fire protection device.

The present application describes a fire protection device comprising

(a) a composite system including
(a1) a carrier layer,
(a2) an adhesive layer, and
(a3) a fire protection layer containing at least one ablative-acting compound, and
(b) a shell inside which the composite system is arranged.

The fire protection device can be used in battery packs, in order to avoid overheating and/or contain a fire in the battery pack.

A method of producing a powder mass for a lithium battery, comprising: (a) mixing an inorganic filler and an elastomer or its precursor in a liquid medium or solvent to form a suspension; (b) dispersing a plurality of particles of a cathode active material in the suspension to form a slurry; and (c) dispensing the slurry and removing the solvent and/or polymerizing or curing the precursor to form the powder mass, wherein at least a particulate comprises one or a plurality of cathode active material particles being encapsulated by a layer of inorganic filler-reinforced elastomer having a thickness from 1 nm to 10 μm, a fully recoverable tensile strain from 2% to 500%, and a lithium ion conductivity from 10.sup.−7 S/cm to 5×10.sup.−2 S/cm and the inorganic filler has a lithium intercalation potential from 1.1 V to 4.5 V versus Li/Li.sup.+.

A method of producing a powder mass for a lithium battery, comprising: (a) mixing an inorganic filler and an elastomer or its precursor in a liquid medium or solvent to form a suspension; (b) dispersing a plurality of particles of a cathode active material in the suspension to form a slurry; and (c) dispensing the slurry and removing the solvent and/or polymerizing or curing the precursor to form the powder mass, wherein at least a particulate comprises one or a plurality of cathode active material particles being encapsulated by a layer of inorganic filler-reinforced elastomer having a thickness from 1 nm to 10 μm, a fully recoverable tensile strain from 2% to 500%, and a lithium ion conductivity from 10.sup.−7 S/cm to 5×10.sup.−2 S/cm and the inorganic filler has a lithium intercalation potential from 1.1 V to 4.5 V versus Li/Li.sup.+.

Provided is a battery pack capable of preventing an ignition or explosion of a battery cell by including a pack housing having the inside that is in a negative pressure state. The battery pack includes: at least one battery module including a plurality of battery cells and a module case having an accommodating space to accommodate the plurality of battery cells therein; and a pack housing including an upper case that has an internal structure to cover a top portion of the at least one battery module and includes a cover portion having an external structure having a curved surface entirely from one end to the other end, and a lower case that has an internal structure to surround a bottom portion of the at least one battery module and includes a mounting portion having an external structure having a curved surface entirely from one end to the other end, wherein the upper case and the lower case are combined with each other and sealed to maintain an inside of the pack housing in a negative pressure state.

Provided is a battery pack capable of preventing an ignition or explosion of a battery cell by including a pack housing having the inside that is in a negative pressure state. The battery pack includes: at least one battery module including a plurality of battery cells and a module case having an accommodating space to accommodate the plurality of battery cells therein; and a pack housing including an upper case that has an internal structure to cover a top portion of the at least one battery module and includes a cover portion having an external structure having a curved surface entirely from one end to the other end, and a lower case that has an internal structure to surround a bottom portion of the at least one battery module and includes a mounting portion having an external structure having a curved surface entirely from one end to the other end, wherein the upper case and the lower case are combined with each other and sealed to maintain an inside of the pack housing in a negative pressure state.

Disclosed is a battery module, as well as a battery pack and a vehicle comprising the same. The battery module includes a plurality of battery cells arranged side by side to face each other in at least one direction, a cooling plate located below the plurality of battery cells, and a heat transfer tape adhered to the battery cells to transfer heat of the battery cells to the cooling plate.

Various implementations directed to a cabin thermal management system are provided. In one implementation, an aircraft may include a passenger cabin configured to transport one or more passengers. The aircraft may also include a battery pack configured to power one or more electronic components of the aircraft. The aircraft may further include a cabin thermal management system configured to regulate a cabin temperature of the passenger cabin by transferring thermal energy from the battery pack to the passenger cabin.

An exemplary retention assembly includes a plurality of battery cells, a heat exchange structure, and a strap that pulls together the heat exchange structure and the plurality of battery cells.

A jelly-roll type of electrode assembly in which a negative electrode sheet, a positive electrode sheet, and a separation membrane interposed between the negative electrode sheet and the positive electrode sheet are wound together is provided. The electrode assembly also includes: at least one electrode tab attached to the negative electrode sheet or the positive electrode sheet and at least a portion extending outside; and a heat radiation tape adhered to the electrode.The electrode tab to which the heat radiation tape is adhered is positioned between the center part of the wound electrode assembly and an external circumferential surface, or on the external circumferential surface, the heat radiation tape includes a heat diffusion layer, and the heat diffusion layer includes at least one of graphite and a metal foil.

A vacuum cleaner, a battery assembly and a charging stand are provided. The battery assembly may include a plurality of battery cells, and a battery cover configured to support the plurality of battery cells. The battery cover may include a plurality of partition walls, and each of the plurality of partition walls forms a plurality of cell chambers that accommodate each of the plurality of battery cells, respectively, and at least a portion of the plurality of partition walls are spaced apart from each other to form at least one separation chamber.