Sony Corporation

Murata Manufacturing Co., Ltd.

Other

Taisei Plas Co., Ltd.

Sony Co., Ltd.

Hidero Mitsui

Toshitaka Takei

Masaru Hiratsuka

Mitsuo Sakamoto

Kazuhito Hatta

Takao Sawaguchi

Yasuhito Eguchi

Hiroyuki Yamada

Tamiji Nagai

Takehiko Tanaka

Hiroyuki Suzuki

Takeru Yamamoto

Ken Segawa

Yoshiyuki Fuchigami

Shoichi Nishiyama

Toshiro Endo

Shigeki Murayama

Masahiro Sawaguchi

Masashi Meguro

Masanori Naritomi

Kiyoshi Nakagawa

Takayuki Yamahira

Shinya Fukushima

Kazuyuki Morita

Kaoru Tomono

Yoshinori Hashimoto

Hitoshi Nakashima

Yamada Hiroyuki

A battery pack has a battery obtained by packing a battery element with a packing member. The battery element is formed by winding or laminating an anode and a cathode through separators. The battery pack includes frame member surrounding the packing member packing the battery element and a coating layer constituted of a curable resin formed on surfaces of the packing member which are surrounded and demarcated by the frame member.

Battery pack and manufacturing method therefor

A method of producing a separator is provided. The method includes providing a particle membrane including inorganic particles on at least one principal surface of a porous body by a vapor-phase process such that the particle membrane has a porosity that is non-uniform in a thickness direction thereof. A method of producing a microporous membrane is also provided.

Method of producing a separator and method of producing a microporous membrane

A separator includes a porous body, and a particle membrane that is formed on at least one principal surface of the porous body. The particle membrane is made of inorganic particles, and has a void formed therein by the inorganic particles. The particle membrane has a porosity that is non-uniform in the thickness direction thereof.

Separator, battery using the same, method for producing separator, microporous membrane, and method for producing a microporous membrane

Battery pack including a frame member surrounding a packing member and manufacturing method therefor

A battery pack includes one or more cell blocks in which one or more secondary battery cells are connected in series and/or in parallel, and a control section for measuring a voltage of the one or more cell blocks to detect an abnormality of a cell block on the basis of a measurement result. The control section calculates a time differential of the voltage for the one or more cell blocks on the basis of the measured voltage, extracts a first time differential which is maximum and a second time differential which is minimum from the time differentials of the voltage for the one or more cell blocks, and determines that a cell block corresponding to the second time differential is abnormal in a case where a difference between the first time differential and the second time differential is less than a prescribed value.

Battery pack and control method therefor

An outer casing of a non-aqueous electrolyte battery is capable of being mass-produced as well as thin and resistant to damage. The outer casingcomprises a casing bodyand a cover. After being internally packaged, a non-aqueous electrolyte battery, e.g. a lithium-ion polymer secondary battery, is sandwiched between the casing bodyand the cover, which are then joined together integrally. The coveris formed from a film-shaped sheet materialof a synthetic resin to make the outer casingthin. The casing bodyand the coverhave a casing body outer peripheral frameand a cover outer peripheral frame, respectively, formed by injection molding. Joint portions of the casing bodyand the coverhave stepped portionsand, respectively. The stepped portions ensure the mechanical strength against shock and impact. With this structure, the outer casingis resistant to damage.

Outer casing of non-aqueous electrolyte battery and production method therefor

Disclosed are a battery pack and a method of producing the same. A battery pack includes a cell main body in which a cell element comprising a solid state electrolyte or a gel form electrolyte disposed between a cathode active material layer and an anode active material layer is contained inside a sheath material comprised of an aluminum laminated film, an outer case having a box-like shape with one end face open and containing the cell main body therein, and a cap for closing the open face of the outer case. In the battery pack, initial charging of the cell main body is conducted after the cell main body is contained into the outer case to assemble the battery pack. An enhancement of cell capacity at a fixed outside size or a reduction in outside size at a fixed cell capacity is achieved.

Battery pack with insulating film sheath material and method of producing the same

A battery element is housed and sealed in a package body, and further, packed together with a connecting board and a frame by the package body. A laminate material for sealing the battery element is used as an outer package material of a battery pack. Thus, the increase of volume for the pack is reduced as much as possible.

Battery pack and method for producing battery pack

A battery pack is provided. The battery device is accommodated and hermetically sealed in a packaging unit and is packed along with a connection substrate and a frame by the packaging unit. A laminated material used for hermetically sealing the battery device is also used as an exterior material for the battery pack.

Battery pack and method for producing same

A rectangular and sealed battery incorporating an outer can for accommodating a power generation element and a cover for closing an opening of the outer can such that the outer can and the cover are welded to each other. The thickness of a body portion of the outer can is smaller than the thickness of the opening. A flange formed into a stepped portion is provided for the outer end of the cover, and the end of the opening of the outer can is made contact with the outer surface of a projection of the cover formed by the stepped portion so as to be joined to the outer surface of the projection and butt-welded to the flange. In the foregoing case, the cover and the end of the opening of the outer can are welded to each other from a side direction.

Rectangular and sealed battery

A variety of information is transmitted to an electronic apparatus by using a microcomputer for low-speed processing and with saved power. A CPU acquires detection data of a thermistor, and detection data, such as the terminal voltage or the discharge current of a battery, at intervals of 10 seconds, through respective interfaces, calculates the remaining capacity and the total capacity of the battery, stores the results and the acquired data as transmission data in a RAM, and transmits this stored transmission data at intervals of one second from a communication interface to an electronic apparatus. Since the CPU transmits the data in one direction independently of the operation of the CPU on the electronic apparatus side, it is possible to greatly lower the operating clock of the CPU and to greatly reduce the consumption of power thereof.

Communication method, remaining capacity calculation method, total capacity calculation method, overcharge protection method, information display method, and battery pack

Battery pack

Growing community of inventors

Kanagawa, Japan

Masaru Hiratsuka