A system is described for providing an electrical ground connection for a circuit assembly. The system may include a housing for the circuit assembly, the housing having an electrically conductive fixation member configured for attachment to an electrically conductive element outside the housing. The system may also include an electrically conductive feature configured for attachment to the circuit assembly, the electrically conductive feature comprising a flexible contact terminal configured to contact the electrically conductive fixation member inside the housing. Attachment of the electrically conductive fixation member to the electrically conductive element outside the housing enables an electrical ground connection for the circuit assembly via the electrically conductive feature comprising the flexible contact terminal.

A battery module includes: a stack of a plurality of battery cells; an end plate provided at an axial end portion of the stack of the battery cells; a substrate provided on a side opposite to the battery cells with respect to the end plate; a mounted component provided on the substrate; and a heat transfer body that is provided between the substrate and the end plate and that transfers, to the end plate, heat generated from the mounted component.

A battery module assembly includes a front frame and a rear frame installed on the front and rear surfaces of the cell assembly and configured to mold a bus bar for electrically connecting battery cells included in the cell assembly, a left end plate and a right end plate respectively covering both side surfaces of the cell assembly, an upper clamp and a lower clamp disposed over an upper portion and a lower portion of the cell assembly, respectively clamping an upper portion and a lower portion of each of the left end plate and the right end plate, and pressing both side surfaces of the cell assembly disposed between the left end plate and the right end plate, and a front cover and a rear cover covering the front frame and the rear frame. A long hole formed in an upper portion and a lower portion of the front cover and the rear cover, and a pipe disposed on an inner perimeter surface of the long hole.

A system is described for providing an electrical ground connection for a circuit assembly. The system may include a housing for the circuit assembly, the housing having an electrically conductive fixation member configured for attachment to an electrically conductive element outside the housing. The system may also include an electrically conductive feature configured for attachment to the circuit assembly, the electrically conductive feature comprising a flexible contact terminal configured to contact the electrically conductive fixation member inside the housing. Attachment of the electrically conductive fixation member to the electrically conductive element outside the housing enables an electrical ground connection for the circuit assembly via the electrically conductive feature comprising the flexible contact terminal.

In a stack, a plurality of power storage cells are stacked. A resin plate is placed on the stack. A flexible printed circuit board is placed on the resin plate and has an electric circuit electrically connected to the plurality of power storage cells. A thermistor element is provided on the electric circuit and is in contact with one power storage cell of the plurality of power storage cells to detect a temperature of the power storage cell. A cover member is provided on the resin plate to cover the flexible printed circuit board. An elastic body is located between the cover member and the thermistor element to press the thermistor element toward the power storage cell. The cover member includes a protuberance that protrudes toward the resin plate side. The elastic body is disposed on the protuberance.

In a stack, a plurality of power storage cells are stacked. A resin plate is placed on the stack. A flexible printed circuit board is placed on the resin plate and has an electric circuit electrically connected to the plurality of power storage cells. A thermistor element is provided on the electric circuit and is in contact with one power storage cell of the plurality of power storage cells to detect a temperature of the power storage cell. A cover member is provided on the resin plate to cover the flexible printed circuit board. An elastic body is located between the cover member and the thermistor element to press the thermistor element toward the power storage cell. The cover member includes a protuberance that protrudes toward the resin plate side. The elastic body is disposed on the protuberance.

A plate member is provided with a gas exhaust port, an opening, and a wall portion. The opening is formed in a bottom surface portion at a position facing an electrode terminal. The wall portion protrudes from the bottom surface portion at positions on outer sides with respect to the gas exhaust port in a width direction of the plate member, and discontinuously extends in a stacking direction of power storage cells. A flexible printed circuit board has a main body portion, and a connection piece portion that extends from the main body portion and is curved so as to be connected to a connection terminal. A first gap is formed between the main body portion and the connection piece portion. A first auxiliary wall portion is provided in the first gap, the first auxiliary wall portion protruding from the bottom surface portion and extending in the stacking direction.

A wired circuit board for battery includes a stainless steel layer, an insulating base layer, and a conductor layer sequentially toward one side in the thickness direction. The stainless steel layer is electrically connected to the conductor layer. The stainless steel layer includes a first laser weld portion that can be laser welded. The first laser weld portion is exposed to the one side and the other side in the thickness direction.

A battery module includes a battery cell assembly having a plurality of battery cells, a sensing assembly which covers a front and rear of the battery cell assembly when mounted thereto, a module case which receives the battery cell assembly and the mounted sensing assembly, and a thermally conductive adhesive interposed between an upper inner surface of the module case and an upper side of the battery cell assembly. The sensing assembly includes a first busbar frame assembly positioned at the front of the battery cell assembly, a second busbar frame assembly positioned at the rear of the battery cell assembly, and a sensing wire which connects the first and second busbar frame assemblies and runs across the upper side of the battery cell assembly in a diagonal direction. The thermally conductive adhesive is disposed on two sides of the sensing wire.

A battery pack includes: battery cells, each including first and second end portions that are opposite each other in a length direction; a case having an accommodation space in which the battery cells and a fluid to cool the battery cells are configured to be accommodated, the case including first and second covers respectively covering the first and second end portions; first and second tab plates respectively on the first and second covers and connected to the first and second end portions; a circuit board on the first tab plate; and a first lead and a second lead through which the first and second tab plates are connected to the circuit board, the first and second leads connected to a first side portion of the circuit board. An arrangement of the leads connected to electrodes of the battery cells is improved, and heat is efficiently dissipated from a switch device.