Samsung Sdi Co., Inc.

Masaki Koike

Yasuaki Hiramura

Sung-Soo Kim

Geun-Bae Kim

Jung-Joon Park

Hironari Takase

Hideaki Maeda

Sung-Jae Cho

Jae-Chul Um

Toru Inagaki

Eui-Sun Hong

A separator for non-aqueous rechargeable lithium batteries and a non-aqueous rechargeable lithium battery including the separator are provided. The separator includes a separator body and a composite including an organic compound and an inorganic compound supporting the separator body, where the organic compound has a higher melting point than that of the material composing the separator body, and the inorganic compound includes an element selected from the group consisting of 1A, 2A, 3A, 4A, 3B, and 5B elements from the periodic table, and combinations thereof, and at least one moiety selected from the group consisting of oxides, hydroxides, carbonates, phosphates, sulfates, nitrates, alkoxides, and combinations thereof.

Separator for non-aqueous rechargeable lithium battery

A secondary battery having a simplified structure by which a lead of a safety device can be adhered to the battery includes an electrode unit having a positive electrode plate, a negative electrode plate and a separator disposed therebetween, a can having a bottom portion and made of aluminum or an aluminum alloy, the can in which the electrode unit and an electrolytic solution are accommodated and sealed, and a surface coating provided on at least an outer surface of the bottom portion of the can to which the lead is attached.

Secondary battery and manufacturing method thereof

The negative active material for a non-aqueous rechargeable battery includes a main component of lithium vanadium oxide, and at least one selected from the group consisting of LiVO, vanadium carbide, and mixtures thereof. The LiVOis included in an amount of 0.5 to 3.0 wt % based on the total weight of the negative active material, and the vanadium carbide is included in amount of 0.5 wt % or less based on the total weight of the negative active material. The negative active material can improve discharge capacity of the non-aqueous rechargeable battery.

Negative active material including lithium vanadium oxide for non-aqueous rechargeable battery, and non-aqueous rechargeable battery including same

A battery protection device may include a thermally responsive operating plate having two plates secured together, the two plates having different coefficients of thermally expansion, an electrically conductive member, and a stopper with which the thermally responsive operating plate can be interlocked. The battery protection device may have a recoverable region current cutoff state, where the thermally responsive operating plate is not interlocked with the stopper, and a contact and dissociation of the thermally responsive operation plate with and from the electrically conductive member can be repeatedly realized. The battery protection device may have an unrecoverable region current cutoff state, where the thermally responsive operating plate is interlocked with the stopper and the thermally responsive operation plate is unrecoverably dissociated from the electrically conductive member.

Battery protection device and battery having the same

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Yokohama, Japan

Masaki Koike