A hand holdable light comprises: a light body having a forward portion, a rearward portion, and a central portion between the forward portion and to the rearward portion; a light source proximate a forward end; and a switch for energizing the light source. The rearward portion has a non-circular cross-section; the switch is on the forward portion; and the central portion has a recess opposite the switch. The light is holdable by a hand with a finger or thumb proximate the recess and the other of a finger or thumb proximate the switch. A battery assembly comprises: a battery housing for receiving and connecting a battery; an electrical switch on a first end of the battery housing; and a pattern of electrical contacts on a second end of the battery housing, wherein ones of the electrical contacts are connected to the battery.

A hand holdable light comprises: a light body having a forward portion, a rearward portion, and a central portion between the forward portion and to the rearward portion; a light source proximate a forward end; and a switch for energizing the light source. The rearward portion has a non-circular cross-section; the switch is on the forward portion; and the central portion has a recess opposite the switch. The light is holdable by a hand with a finger or thumb proximate the recess and the other of a finger or thumb proximate the switch. A battery assembly comprises: a battery housing for receiving and connecting a battery; an electrical switch on a first end of the battery housing; and a pattern of electrical contacts on a second end of the battery housing, wherein ones of the electrical contacts are connected to the battery.

An electric joint formed between a high current source and a high current load, and a method of making electrical connection between them. In one form, the source is made up of one or more cells in a battery pack and the load is an electric motor. An electrical connection assembly includes a first conductor, a fastener and a second conductor joined together such that electrical continuity between the conductors is not established until the fastener imparts a substantially normal force to both of them in such a way that they become secured together to produce a deformable shape to adjacently-facing surfaces one or both conductors, thereby ensuring significant contact and a related low electrical resistance as a way to avoid imperfect or partial attachments at the joint.

One problem to be solved by the present disclosure is to provide a battery wiring module that can facilitate parts control. A case (12) includes a first case body (21) including first wire inserting portions (31), a second case body (22) including second wire inserting portions (41), first covers (24) attached to the first case body (21) to cover the first wire inserting portions (31), and second covers (25) attached to the second case body (22) to cover the second wire inserting portions (41). Furthermore, the first covers (24) and the second covers (25) have shapes identical to each other.

An aspect of this disclosure is to provide a battery wiring module that enables the case to stably hold bus bars. A battery wiring module (10) according to an aspect of this disclosure includes a plate-shaped bus bar (11) to be connected to a secondary battery (BT); and a case (12) that holds the bus bar (11). Also, the case (12) includes a holding portion (33) that holds the bus bar (11), and a regulating portion (34) that regulates rotation of the bus bar (11) about the holding portion (33) when the bus bar (11) is viewed in the plate thickness direction of the bus bar (11), i.e., in the height direction (Z).

-- A first cover includes: a cover body portion that covers a wire insertion portion, a first engaging portion that extends from the cover body portion to a case body side, and is engaged with a first engagement portion of the case body, and a second engaging portion that extends from the cover body portion to the case body, and is engaged with a second engagement portion of the case body. A length in an extending direction of the first engaging portion is set longer than a length in an extending direction of the second engaging portion. Moreover, the case body includes a first regulation portion that abuts against a leading end portion in the extending direction of the first engaging portion when the first engaging portion is about to be engaged with the second engagement portion, and regulates displacement of the first engaging portion in an attachment direction.

A two-piece current collector sub-assembly includes a current collector bridge disposed on the positive terminal of a first battery cell and a current collector plate disposed on a second battery cell. The current collector plate surrounds a positive terminal of the second battery cell. The current collector bridge is coupled to the current collector plate to electrically connect the first battery cell to the second battery cell.

Embodiments of the present disclosure relate to a battery module. According to an embodiment of the present disclosure, there is provided a battery module including a plurality of battery cells each including at least one electrode tab, and a bus bar in contact with the electrode tabs to electrically connect the plurality of battery cells, wherein the bus bar includes a plate in which a plurality of holes are formed, and the electrode tabs are inserted into at least a portion of the plurality of holes to electrically connect the plurality of battery cells.

Embodiments of the present disclosure relate to a battery module. According to an embodiment of the present disclosure, there is provided a battery module including a plurality of battery cells each including at least one electrode tab, and a bus bar in contact with the electrode tabs to electrically connect the plurality of battery cells, wherein the bus bar includes a plate in which a plurality of holes are formed, and the electrode tabs are inserted into at least a portion of the plurality of holes to electrically connect the plurality of battery cells.

Disclosed is a compact secondary battery module, which includes a cartridge assembly having a plurality of cartridges stacked while accommodating cells, respectively, so that a plurality of lead overlapping portions where leads of adjacent cells overlap with each other are located at a cartridge sidewall with a predetermined pattern; and a sensing housing having a plurality of bus bars located and welded corresponding to the lead overlapping portions, respectively, the sensing housing being capable of being arranged at a side of the cartridge assembly, wherein a first lead of a cell of each lead overlapping portion is configured to have a shorter width than a second lead having a polarity opposite to the first lead as much as a predetermined width, and in a state where the sensing housing is coupled to the cartridge assembly, a corresponding bus bar comes into contact with the second lead substantially on the same line as the first lead, and the second lead and the bus bar are welded to each other.