A secondary battery includes a case that accommodates an electrode assembly including a plurality of first electrode plates coated with a first active material, a plurality of second electrode plates coated with a second active material, and a separator positioned between each of the first electrode plates and each of the second electrode plates; lead tabs connected to the first electrode plates and the second electrode plates, respectively, and protruding outside of the case; and a protection circuit board electrically connected to the lead tabs, wherein the protection circuit board includes a pad including a blank region and a cell seating region, the lead tabs are seated on the cell seating region, and the blank region is along an edge of the cell seating region.

Provided are a battery module and a battery pack including the same, and more particularly, a battery module in which a CMU (cell monitoring unit) may be easily and conveniently mounted by providing a CMU mounting part, on which the CMU may be mounted, on an end plate constituting a module case, and a battery pack capable of simplifying the entire manufacturing process of the battery pack and increasing space utilization inside the battery pack by applying the battery module to the battery pack.

Provided are a battery module and a battery pack including the same, and more particularly, a battery module in which a CMU (cell monitoring unit) may be easily and conveniently mounted by providing a CMU mounting part, on which the CMU may be mounted, on an end plate constituting a module case, and a battery pack capable of simplifying the entire manufacturing process of the battery pack and increasing space utilization inside the battery pack by applying the battery module to the battery pack.

A cell having a galvanic cell, a first semiconductor switching element, a first cell connection, which is directly electrically coupled to a first potential connection of the galvanic cell, and a second cell connection, which is electrically coupled via the first semiconductor switching element to a second potential connection of the galvanic cell. The battery cell includes a third cell connection electrically coupled to the second potential connection of the galvanic cell, a second semiconductor switching element, and a fourth cell connection, which is electrically coupled via the second semiconductor switching element to the first potential connection of the galvanic cell.

A vehicle battery unit comprising: a plurality of battery modules; an electric connection box; a battery control device configured to control the plurality of battery modules, a signal line extending from the electric connection box; a voltage detection line extending from the plurality of battery modules; and a battery case which accommodates the plurality of battery modules, the electric connection box, the battery control device, the signal line, and the voltage detection line. The battery control device includes: a first connector to which the signal line is connected on the one side in the front-rear direction; and a second connector to which the voltage detection line is connected on the other side in the front-rear direction. The battery control device is disposed above the plurality of battery modules and further on the one side than a center portion of the plurality of battery modules in the front-rear direction.

A self-balancing floating battery case, comprising an upper casing and a lower casing, wherein the upper casing and the lower casing are connected by threads, a height of the upper casing is bigger than a height of the upper casing. A light opening is provided at an intermediate portion of the upper casing away from a center of the upper casing, a box surrounding the light opening is provided on an inner wall of the upper casing, the box is divided to be a PCB cavity and a battery cavity, a main body of the light opening deviates towards the PCB cavity and a main body of the battery cavity deviate towards the center of the upper casing. In the present invention, existing structures are modified, the battery case has a higher waterline, entrance of water can be prevented; and eccentricity of the center of gravity is corrected by weight.

A self-balancing floating battery case, comprising an upper casing and a lower casing, wherein the upper casing and the lower casing are connected by threads, a height of the upper casing is bigger than a height of the upper casing. A light opening is provided at an intermediate portion of the upper casing away from a center of the upper casing, a box surrounding the light opening is provided on an inner wall of the upper casing, the box is divided to be a PCB cavity and a battery cavity, a main body of the light opening deviates towards the PCB cavity and a main body of the battery cavity deviate towards the center of the upper casing. In the present invention, existing structures are modified, the battery case has a higher waterline, entrance of water can be prevented; and eccentricity of the center of gravity is corrected by weight.

An energy storage apparatus includes: an energy storage unit including an energy storage device; a substrate electrically connected to the energy storage unit; a cover disposed on one side in a first direction of the substrate; and a cable in which one end is electrically connected to the energy storage unit while the other end is connected to an external conductive member of the energy storage apparatus. The cable is disposed on one side in the first direction of at least a part of the cover while connected to the external conductive member.

A pouch battery module is provided. The pouch battery module includes a metal housing, wherein a plurality of pouch battery cells arranged along a first direction is disposed inside the metal housing; and a rigid insulation plate being provided between an outermost pouch battery cell and the metal housing along the first direction.

A busbar module includes: busbars fixed to battery cells of a battery module; a plate-like flexible circuit body; and a case that accommodates the circuit body and the busbars, in which the circuit body includes a trunk portion extending in a first direction in which the battery cells are arranged, and branch portions branching from the trunk portion and connected to the busbars, the branch portion includes a base portion, a fixed portion fixed to the busbar, and an intermediate portion extending from the base portion to the fixed portion is the first direction, a first end portion of the trunk portion has a first through-hole, and the case includes a first protrusion and locks the first end portion with the first protrusion to hold the circuit body in a state where the intermediate portion is flexurally deformed.