Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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 casing 4 comprises a casing body 4a and a cover 4b. After being internally packaged, a non-aqueous electrolyte battery 2, e.g. a lithium-ion polymer secondary battery, is sandwiched between the casing body 4a and the cover 4b, which are then joined together integrally. The cover 4b is formed from a film-shaped sheet material 4c of a synthetic resin to make the outer casing 4 thin. The casing body 4a and the cover 4b have a casing body outer peripheral frame 9 and a cover outer peripheral frame 10, respectively, formed by injection molding. Joint portions of the casing body 4a and the cover 4b have stepped portions 9a and 10a, respectively. The stepped portions ensure the mechanical strength against shock and impact. With this structure, the outer casing 4 is resistant to damage.

Abstract: 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.

Abstract: 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 casing 4 comprises a casing body 4a and a cover 4b. After being internally packaged, a non-aqueous electrolyte battery 2, e.g. a lithium-ion polymer secondary battery, is sandwiched between the casing body 4a and the cover 4b, which are then joined together integrally. The cover 4b is formed from a film-shaped sheet material 4c of a synthetic resin to make the outer casing 4 thin. The casing body 4a and the cover 4b have a casing body outer peripheral frame 9 and a cover outer peripheral frame 10, respectively, formed by injection molding. Joint portions of the casing body 4a and the cover 4b have stepped portions 9a and 10a, respectively. The stepped portions ensure the mechanical strength against shock and impact. With this structure, the outer casing 4 is resistant to damage.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: By using a DI molding method or a roll forming method, a casing member made of a thin cylindrical metal pipe is formed and molded so as to almost coincide with a shape of a battery element, thereby forming an outer casing. A power generating element to which a circuit board has been connected is enclosed in the outer casing and opening portions of the outer casing are closed by a front cap and a rear cap formed by, for example, a resin molding, thereby forming a battery pack. The power generating element is used by externally covering the battery element with a laminate film or the battery element is enclosed as it is into the outer casing. To suppress the penetration of the moisture into the battery, it is also possible to mix a moisture trapper for absorbing the moisture into a resin material of the front cap and rear cap and suppress the penetration of the moisture.

Abstract: 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.