A battery module includes a battery cell stack, a module frame, and a bus bar frame. The battery cell stack is configured to include a plurality of battery cells including electrode leads that are stacked in in the battery cells. The module frame is configured to accommodate the battery cell stack. The bus bar frame is positioned in a protrusion direction of the electrode leads protruding from the battery cells. A protrusion is formed in either the bus bar frame or the module frame. An insertion hole into which the protrusion is inserted is formed in the other of the bus bar frame and the module frame than the one of the bus bar frame and the module frame in which the protrusion is formed.

A battery module includes a battery cell stack, a module frame, and a bus bar frame. The battery cell stack is configured to include a plurality of battery cells including electrode leads that are stacked in in the battery cells. The module frame is configured to accommodate the battery cell stack. The bus bar frame is positioned in a protrusion direction of the electrode leads protruding from the battery cells. A protrusion is formed in either the bus bar frame or the module frame. An insertion hole into which the protrusion is inserted is formed in the other of the bus bar frame and the module frame than the one of the bus bar frame and the module frame in which the protrusion is formed.

A battery control unit includes a plurality of battery units, a charger configured to charge a battery, a controller, and a charging controller. Each of the plurality of battery units includes a switching unit. The switching unit is configured to switch between a connected state where the battery configured to be located in the same battery unit as that of the switching unit is connected in series with the battery configured to be located in an adjacent battery unit, and a non-connected state where the battery in the same battery unit as that of the switching unit is disconnected from the series connection with the battery in the adjacent battery unit.

A battery compartment for a toy figurine including an elongate cavity configured to receive a battery. The battery compartment has a first spring connector defining a positive contact surface for connection to the battery received in the elongate cavity. The battery compartment also has a battery shoulder mounted to the spring connector. The battery shoulder defines a hole shaped to tit a positive terminal of the battery therethrough. The battery compartment includes a second siring connector defining a negative contact surface for connection to the battery received in the elongate cavity. The second spring connector is configured to elastically maneuver to lengthen the donate cavity.

A battery compartment for a toy figurine including an elongate cavity configured to receive a battery. The battery compartment has a first spring connector defining a positive contact surface for connection to the battery received in the elongate cavity. The battery compartment also has a battery shoulder mounted to the spring connector. The battery shoulder defines a hole shaped to tit a positive terminal of the battery therethrough. The battery compartment includes a second siring connector defining a negative contact surface for connection to the battery received in the elongate cavity. The second spring connector is configured to elastically maneuver to lengthen the donate cavity.

Provided is a lithium ion battery module that has high safety and that even when runaway occurs, makes it difficult for this runaway to spread to other cells. The lithium ion battery module includes a cell unit including a plurality of cells provided with a rupture valve and a spacer including a recess, wherein the cell unit is covered by the spacer such that the rupture valve and the recess are arranged opposite each other, the recess has a depth of more than 0.5 mm, the spacer contains a resin, and a wall section formed of the spacer is provided between adjacent cells.

Provided is a lithium ion battery module that has high safety and that even when runaway occurs, makes it difficult for this runaway to spread to other cells. The lithium ion battery module includes a cell unit including a plurality of cells provided with a rupture valve and a spacer including a recess, wherein the cell unit is covered by the spacer such that the rupture valve and the recess are arranged opposite each other, the recess has a depth of more than 0.5 mm, the spacer contains a resin, and a wall section formed of the spacer is provided between adjacent cells.

Discussed is a battery pack including: a plurality of battery cells; a case configured to receive the plurality of battery cells therein; a connector configured to electrically connect the battery pack to a device; and a printed circuit board (PCB) configured to control operation of the battery pack, the PCB being located inside or outside the case, and the connector being coupled to the PCB, wherein the connector comprises: a clip portion configured to form a first contact point at which the connector electrically contacts a device pin inserted into the connector; and a contact arm having one side connected to the clip portion, the contact arm being configured to form a second contact point having a distance to the device pin varying in inverse proportion to a distance to the device pin at the first contact point.

Discussed is a battery pack including: a plurality of battery cells; a case configured to receive the plurality of battery cells therein; a connector configured to electrically connect the battery pack to a device; and a printed circuit board (PCB) configured to control operation of the battery pack, the PCB being located inside or outside the case, and the connector being coupled to the PCB, wherein the connector comprises: a clip portion configured to form a first contact point at which the connector electrically contacts a device pin inserted into the connector; and a contact arm having one side connected to the clip portion, the contact arm being configured to form a second contact point having a distance to the device pin varying in inverse proportion to a distance to the device pin at the first contact point.

A busbar for a battery module includes a first portion configured to be coupled to a first terminal of a first battery cell, a second portion configured to be coupled to a second terminal of a second battery cell, and a fuse portion extending between the first portion and the second portion. The fuse portion includes a number of openings extending through the fuse portion. Each pair of openings defines an electrical path between the first portion of the busbar and the second portion of the busbar.