A battery pack includes: a plurality of battery cells; and a holder including cell regions in which the plurality of battery cells are arranged, and well regions each arranged between adjacent cell regions of the cell regions, each of the well regions being connected to at least one of the adjacent cell region and being filled with a filling resin.

An accumulator arrangement for a hybrid or electric vehicle includes a plurality of battery cells which are stacked in a stacking direction to form at least one battery block. The at least one battery block is arranged in a housing of the accumulator arrangement. A cooling device includes a cooling plate arranged on one side on the battery block and extending parallel to the stacking direction. On the at least one cooling plate at least one cover plate with at least one cooling channel through which a coolant can flow is secured, facing away from the at least one battery block. The cooling plate forms an outer contour of the fluid-tight housing. The at least one cooling channel of the cover plate is open towards the at least one cooling plate and is closed by the at least one cooling plate.

An external battery device is implemented which can detachably engage with a smartwatch to thereby enable seamless battery replacement and smartwatch battery replenishment without having to remove the smartwatch from a user's wrist. The external battery device can be a bezel that aesthetically fits in a cut-out around a perimeter of the smartwatch's face and locks in place using, for example, a male-female connection mechanism. The external battery device includes a casing that functions as the bezel for the watch. The casing includes a channel inside which a rechargeable battery is positioned. The male connectors of the external battery device extend downward from a hole in the casing to engage with corresponding female receptacles on the smartwatch. In typical implementations, two different shapes of the male and female connection mechanisms may be used to provide a consistent manner in which the user connects the external battery device to the smartwatch.

A battery module includes: a cell laminated body; a first and a second end plates which are provided at both end portions of the cell laminated body; and a sensor device which is mounted on a mounting surface and detects the voltage of each cell in the cell laminated body. The sensor device includes: a sensor device body; and a sensor fixing portion which is fixed to the first end plate by a fastening member. In the perpendicular direction, an end surface of the fastening member is located to be lower than or equal to an end surface of the sensor device body, the mounting surface of the cell laminated body is located to be lower than a bottom surface of the sensor fixing portion, and an end surface of the first end plate is located to be lower than the mounting surface of the cell laminated body.

The present invention relates to a lid for a battery module, in particular in an electric vehicle, comprising a cover section for pole-side attachment of the lid to the battery module, and tabs which are provided at opposite ends of the cover section, are arranged inclined relative to the cover section and, in a state in which the lid is installed on the battery module, extend from the cover section in a direction pointing away from the battery module.

A battery assembly including a first end; a first cell; a second cell, stacked with the first cell, the first cell and the second cell are electrically connected via their tabs to form a series tab assembly or a parallel tab assembly, wherein a gap exists between the series tab assembly or the parallel tab assembly and the first end; and a tab insulator, having a first part and a second part extending from the first part, and the second part is located in the gap of the series tab assembly or the parallel tab assembly at the first end. The battery assembly and the electrochemical device including the battery assembly realize a connection of a soft-package battery with external device(s) by a simple structure and have good current overload capacity.

A battery pack includes an assembled battery, a battery case, a first temperature sensor and a second temperature sensor. The assembled battery has three or more battery cells electrically connected in series with each other. The battery case has the assembled battery received therein so that the assembled battery is partially exposed to outside of the battery case. The first temperature sensor is provided to detect the temperature of a most-exposed one of the three or more battery cells. The most-exposed battery cell has a maximum exposed area to the outside of the battery case among all of the three or more battery cells. The second temperature sensor is provided to detect the temperature of a least-exposed one of the three or more battery cells. The least-exposed battery cell has a minimum exposed area to the outside of the battery case among all of the three or more battery cells.

To improve reliability of a battery module, battery module (1) includes battery stack (2) having a plurality of batteries (14) stacked, each battery (14) having a top surface provided with an output terminal, restraining member (12) that has flat portion (54) extending along side surfaces of the plurality of batteries (14) in stacking direction (X) of batteries (14) and restrains the plurality of batteries (14), and side separator (10) that has first portion (50) interposed between each battery (14) and flat portion (54) and insulates each battery (14) from flat portion (54). Each battery (14) is disposed with gap (G) from first portion (50), the gap being large enough to suppress movement of water (W) due to capillarity.

A power storage module includes: a plurality of power storage devices arranged in a first direction; and a separator provided between two adjacent power storage devices and insulating the two power storage devices from each other. The power storage device includes an exterior can that have an opening, a sealing plate that blocks the opening, and a joint part between the exterior can and the sealing plate. The separator includes a contact area that abuts a surface of the exterior can facing the first direction and a separation area that overlaps the joint part as viewed in the first direction and concaved with respect to the contact area in a direction away from the exterior can.

Discussed is battery pack case configured to receive a battery cell stack constituted by a plurality of battery cells stacked therein, the battery pack case including a first case configured to allow the battery cell stack to be mounted therein and a second case coupled to the first case, the second case being configured to cover the battery cell stack, wherein the first case includes a first flat panel portion and a first side portion, wherein the second case includes a second flat panel portion and a second side portion, and wherein a thickness of the second flat panel portion of the second case is less than the thickness of the second side portion of the second case.