Abstract: There is provided a resin molded component that is injection molded, the resin molded component including an outer surface portion on which a gate mark is formed, and an inner surface portion that is on a side opposite to the outer surface portion and has a fracture mark of resin formed.

Abstract: A battery includes an electrode body and an exterior member that accommodates the electrode body. At least a part of the exterior member is covered with an insulating member, and the insulating member has a multi-layer structure. A side of the insulating member in contact with the exterior member is defined as an inner layer and a side of the insulating member opposite to the inner layer is defined as an outer layer. An innermost layer of the insulating member includes a nonflammable gas generating member that generates nonflammable gas at high temperature, and an outermost layer of the insulating member includes an insulating resin layer.

Abstract: A battery pack having a plurality of laminated batteries between a pair of restraint plates that each have a battery positioning portion for determining positions of the plurality of laminated batteries and that sandwich the plurality of laminated batteries, and a band around a central portion of a stacked structure of the plurality of laminated batteries and the pair of restraint plates and that fastens the stacked structure at the central portion.

Abstract: A battery case that includes an outer case that houses a battery, and an output terminal on an outer side of the outer case and having a first flat plate portion defining a first bolt insertion hole, and a second flat plate portion orthogonal to the first flat plate portion. The battery case and the output terminal define therebetween a first nut holding portion configured to hold a nut between the second flat plate portion of the output terminal and the first nut holding portion, the first nut holding portion having a sloped shape where a distance between the first nut holding portion and the second flat plate portion of the output terminal is shorter on a back side than on a front side thereof along a nut insertion direction.

Abstract: A battery case that includes an outer case that houses a battery, and an output terminal on an outer side of the outer case and having a first flat plate portion defining a first bolt insertion hole, and a second flat plate portion orthogonal to the first flat plate portion. The battery case and the output terminal define therebetween a first nut holding portion configured to hold a nut between the second flat plate portion of the output terminal and the first nut holding portion, the first nut holding portion having a sloped shape where a distance between the first nut holding portion and the second flat plate portion of the output terminal is shorter on a back side than on a front side thereof along a nut insertion direction.

Abstract: A battery pack having a plurality of laminated batteries between a pair of restraint plates that each have a battery positioning portion for determining positions of the plurality of laminated batteries and that sandwich the plurality of laminated batteries, and a band around a central portion of a stacked structure of the plurality of laminated batteries and the pair of restraint plates and that fastens the stacked structure at the central portion.

Abstract: A battery state monitoring device includes a substrate in which a through-hole disposed to be opposite to a safety valve of a battery is formed, a sensor which includes a positive electrode end and a negative electrode end and which is provided on the substrate, a first interconnector which is connected to the positive electrode end of the sensor on the substrate and which is disposed to pass along a part of a periphery of the through-hole, and a second interconnector which is connected to the negative electrode end of the sensor on the substrate and which is disposed to pass along a part of the periphery of the through-hole. The first interconnector and the second interconnector are disposed to extend along each other at the periphery of the through-hole.

Abstract: A battery state monitoring device (3) is provided with: a substrate (100) that is provided with a terminal insertion hole (111B) into which an electrode terminal (75) of a battery (2) is inserted; a stator (141B) which is formed of a heat conductive material, is provided around the terminal insertion hole (111B), and is fitted to the electrode terminal (75) so as to be in contact with the electrode terminal (75) in a state where the electrode terminal (75) is inserted into the terminal insertion hole (111B); and a temperature measuring element (151) which is affixed to the substrate (100) and measures the temperature of the electrode terminal (75) through the stator (141B).

Abstract: There is provided a method of thermally controlling an electric storage device. The method comprises increasing cooling medium supplied to the electric storage as an electric charge stored in the electric storage device increases. According to the method, by increasing the cooling medium supplied to the electric storage device as an electric charge stored in the electric storage device increases, the electric storage device may be kept at a temperature that increases the efficiency of charging or discharging the electric storage device. It is asserted to be more efficient to lower the temperature of the electric storage device when more electric charge is stored in the electric storage device. Also, an adequate amount of the cooling medium may be supplied to the electric storage. As a result, the overall efficiency of the electric system may be improved.

Abstract: A battery state monitoring device includes a substrate in which a through-hole disposed to be opposite to a safety valve of a battery is formed, a sensor which includes a positive electrode end and a negative electrode end and which is provided on the substrate, a first interconnector which is connected to the positive electrode end of the sensor on the substrate and which is disposed to pass along a part of a periphery of the through-hole, and a second interconnector which is connected to the negative electrode end of the sensor on the substrate and which is disposed to pass along a part of the periphery of the through-hole. The first interconnector and the second interconnector are disposed to extend along each other at the periphery of the through-hole.

Abstract: An object of the present invention is to provide a secondary battery lifetime prediction apparatus, a battery system and a secondary battery lifetime prediction method that allow a more accurate lifetime prediction for a secondary battery.

Abstract: A battery system includes: a first battery cell; a second battery cell; a power load supplied with current from the first battery cell and the second battery cell; a connection which electrically connects a negative electrode terminal of the first battery cell and a positive electrode terminal of the second battery cell; a connection which electrically connects the first negative electrode terminal and the second positive electrode terminal; a cell balancing circuit which causes electromotive voltages of the first battery cell and the second battery cell to be substantially equal; and a controller, wherein the controller enables the current to be supplied to the power load after causing the electromotive voltages of the first battery cell and the second battery cell to be substantially equal, thereby determining looseness of the connection.

Abstract: A positive electrode active material for a lithium ion secondary battery is a lithium-containing composite oxide represented by the chemical formula: Lia(Co1-x-yMgxAly)bMzOc, where M is at least one element selected from the group consisting of Na and K, and the values a, b, c, x, y and z respectively satisfy 0?a?1.05, 0.005?x?0.15, 0.0001?y?0.01, 0.0002?z?0.008, 0.85?b?1.1 and 1.8?c?2.1. This makes it possible to improve a high temperature storage characteristics and safety of the lithium ion secondary battery.

Abstract: There is provided a method of thermally controlling an electric storage device. The method comprises increasing cooling medium supplied to the electric storage as an electric charge stored in the electric storage device increases. According to the method, by increasing the cooling medium supplied to the electric storage device as an electric charge stored in the electric storage device increases, the electric storage device may be kept at a temperature that increases the efficiency of charging or discharging the electric storage device. It is asserted to be more efficient to lower the temperature of the electric storage device when more electric charge is stored in the electric storage device. Also, an adequate amount of the cooling medium may be supplied to the electric storage. As a result, the overall efficiency of the electric system may be improved.

Abstract: A positive electrode active material for a lithium ion secondary battery is a lithium-containing composite oxide represented by the chemical formula: Lia(Co1-x-yMgxAly)bMzOc, where M is at least one element selected from the group consisting of Na and K, and the values a, b, c, x, y and z respectively satisfy 0≦a≦1.05, 0.005≦x≦0.15, 0.0001≦y≦0.01, 0.0002≦z≦0.008, 0.85≦b≦1.1 and 1.8≦c≦2.1.