Patent application number | Description | Published |
20140220425 | ACCUMULATOR - An accumulator includes a case accommodating an electrode assembly and electrolyte. The case includes a recess, a port, and a cap. The recess extends into a wall of the case. The port extends through the case wall in the recess. The cap is welded to the case wall around the recess to close the recess. | 08-07-2014 |
20150017517 | POWER STORAGE APPARATUS AND VEHICLE WITH POWER STORAGE APPARATUS MOUNTED THEREON - A power storage device includes an electrode assembly formed by stacking a positive electrode sheet, a negative electrode sheet, and a sheet-like separator arranged between the positive and negative electrode sheets. The positive electrode sheet includes a positive electrode thin metal plate, which includes a first positive electrode edge and a second positive electrode edge. A surface of the positive electrode sheet includes a positive electrode application region and a positive electrode non-application region. The negative electrode sheet includes a negative electrode thin metal plate including a first negative electrode edge and a second negative electrode edge. A positive electrode border, which is a border between the positive electrode application region and the positive electrode non-application region, is located between the first positive electrode edge and the second positive electrode edge. The positive electrode border is located between the first negative electrode edge and the second negative electrode edge. | 01-15-2015 |
20150079432 | CURRENT INTERRUPTION DEVICE AND ELECTRIC STORAGE DEVICE USING SAME - A current interruption device includes: a deforming plate configured to deform when the internal pressure of the casing rises above the predetermined level; a conducting plate which configures the current path; and a contact plate. The conducting plate includes a first contact portion configured to contact the contact plate. The contact plate includes a second contact portion configured to contact the first contact portion. The deforming plate includes a pressure receiving portion configured to receive the internal pressure of the casing and a contacting portion configured to contact the first contact portion. The second contact portion is configured to be separated from the conducting plate by deformation causing the contacting portion to move toward the contact plate. The deforming plate is insulated from the conducting plate and the contact plate. The conducting plate is disposed to be interleaved between the deforming plate and the contact plate. | 03-19-2015 |
20150086847 | POWER STORAGE DEVICE - When an electrode assembly of a power storage device is viewed from the front in the direction of lamination, the distance between a positive electrode electricity collecting portion and an imaginary reference line passing through the center of the electrode assembly is different from the distance between a negative electrode electricity collecting portion and the imaginary reference line. Therefore, the electrode assembly has an asymmetrical structure. | 03-26-2015 |
20150099154 | ELECTRIC STORAGE DEVICE AND RECHARGEABLE BATTERY - The electric storage device is provided with a case body and an electrode assembly accommodated in the case body. The electrode assembly includes positive and negative electrode sheets each having an active material layer. The case body includes at least one primary inner wall surface, at least one secondary inner wall surface, and corner surfaces. A plane that includes the boundary line between a primary inner wall surface and the corresponding corner surface and faces the corresponding secondary inner wall surface is defined as an imaginary boundary plane. An edge of the active material layer of a positive electrode sheet facing the corresponding secondary inner wall surface is positioned on the surface of the imaginary boundary plane, or is positioned in a region spaced further apart from the secondary inner wall surface facing the edge than the position of the imaginary boundary plane. | 04-09-2015 |
20150104694 | ELECTRICITY STORAGE DEVICE - A positive collector and a negative collector are arranged such that connecting surfaces of the positive collector and the negative collector that are connected to collection groups face an electrode assembly. An insulator is arranged in a case between the positive and negative collectors and a terminal wall of the case. The insulator separates an opposing surface from the terminal wall. This reduces useless space and insulates the collectors and the power collection groups from the case. | 04-16-2015 |
20150140401 | ELECTRICITY STORAGE DEVICE - A rechargeable battery includes positive and negative electrodes and first and second separator portions. The positive electrode includes a positive metal foil and a positive active material layer. A positive active material-free portion is formed on a first end of the positive electrode. The positive active material layer extends to a second end. The negative electrode includes a negative metal foil and a negative active material layer. A negative active material-free portion is formed on a third end of the negative electrode. The negative active material layer extends to a fourth end. Each of the first and second separator portions includes a strong bonding portion and a weak bonding portion. The strong bonding portion is located proximate to the first end and extends along the first end. The weak bonding portion is located proximate to the second end and extends along the second end. | 05-21-2015 |
20150207124 | ELECTRIC STORAGE DEVICE - The electric storage device disclosed herein is a stacked type electric storage device. The electric storage device includes a separator insulating a first electrode from a second electrode. The electric storage device includes a first conductive path from a first electrode terminal to the first electrode, a second conductive path from a second electrode terminal to the second electrode, and a current interruption device disposed between the second electrode terminal and the second electrode, the current interruption device being configured to interrupt the second conductive path. The separator includes a first surface part covering the one surface of the first electrode, a second surface part covering the other surface of the first electrode, and a connection part connected to both the first and second surface parts. The connection part is disposed between the current interruption device and an end of the first electrode on a current interruption device side. | 07-23-2015 |
20150207132 | ELECTRIC STORAGE DEVICE INCLUDING CURRENT INTERRUPTION DEVICE - An electric storage device comprises the current interruption device which includes a deformable plate electrically connected to a first conductive member and a second conductive member to constitute part of a conductive path. The deformable plate deforms to interrupt the conductive path, when a pressure inside the casing rises. The first conductive member, the second conductive member, and the current interruption device are disposed between the terminal attachment wall and the electrode assembly. The first conductive member extends along the terminal attachment wall to connect the tab and the current interruption device. The second conductive member is connected to the current interruption device at a location that is farther from the terminal attachment wall than a connection between the first conductive member and the current interruption device, and extends along the terminal attachment wall to connect the current interruption device and the electrode terminal. | 07-23-2015 |