Provided a battery cell having a plurality of electrodes and a battery module using the same. In order to configure the battery module only by connections of the electrodes without including a separate bus bar and improve the degree of freedom of the connections, the battery cell having cathode terminals and anode terminals protruding to the outside includes: a plurality of electrode terminals selected from the cathode terminals or the anode terminals and formed on both sides of the battery cell opposing each other. The battery cell having the plurality of electrodes and the battery module formed is various forms according to a layout of a vehicle using the same may be configured.

A battery pack includes a battery assembly including six batteries each having a cylindrical external shape, and electrode terminals at both end portions in a cylindrical axis direction, respectively, are arranged in a second direction perpendicular to the cylindrical axis direction in which cylindrical axes thereof are in parallel or substantially in parallel, and a tab to connect the electrode terminals of the six batteries. Assuming that three batteries arranged in the second direction are a first battery, a second battery, and a third battery in this order, the tab is connected to the first battery and the third battery without being connected to the second battery.

A battery pack includes a battery assembly including six batteries each having a cylindrical external shape, and electrode terminals at both end portions in a cylindrical axis direction, respectively, are arranged in a second direction perpendicular to the cylindrical axis direction in which cylindrical axes thereof are in parallel or substantially in parallel, and a tab to connect the electrode terminals of the six batteries. Assuming that three batteries arranged in the second direction are a first battery, a second battery, and a third battery in this order, the tab is connected to the first battery and the third battery without being connected to the second battery.

The present disclosure is directed to energy storage systems for vehicles. In some aspects, the energy storage system may be used to power an electric automobile. The energy storage system may include a plurality of individual battery cells. The cells may be cylindrical and have a positive and negative terminal on the same side. The cells may be physically and/or electrically organized into bricks. The bricks may be physically and/or electrically organized into modules. The modules may be physically and/or electrically organized into strings. The strings may be physically and/or electrically organized into a pack. In some embodiments, packs, strings, modules and/or bricks may include flexible circuitry and/or may be liquid cooled.

A battery pack includes a battery unit; a housing including an inner portion and an outer portion, the battery unit being accommodated in the inner portion, the outer portion including a service terminal therein that is electrically connected to the battery unit; a bus bar including a first end and a second end, the first end being in the inner portion of the housing and connected to the battery unit, the second end being in the outer portion of the housing and connected to the service terminal such that at least a portion of the bus bar is buried in the housing; a first sealing portion sealing the battery unit and the first end of the bus bar; and a second sealing portion sealing the service terminal and the second end of the bus bar.

A battery pack includes a battery unit; a housing including an inner portion and an outer portion, the battery unit being accommodated in the inner portion, the outer portion including a service terminal therein that is electrically connected to the battery unit; a bus bar including a first end and a second end, the first end being in the inner portion of the housing and connected to the battery unit, the second end being in the outer portion of the housing and connected to the service terminal such that at least a portion of the bus bar is buried in the housing; a first sealing portion sealing the battery unit and the first end of the bus bar; and a second sealing portion sealing the service terminal and the second end of the bus bar.

A battery pack having a plurality of reinforcing elements disposed between cell holders and separating the cell connectors of the battery pack. Thereby, the battery pack according to the invention provides improved protection against short circuits during manufacture.

A battery pack includes at least one battery unit. The battery unit includes at least one battery string. The battery string includes one or at least two cells. A voltage difference across the battery string is less than or equal to 60 V. When the battery string includes at least two cells, the cells in the battery string are arranged sequentially along a first direction, and the first direction is parallel to a direction from the tail of the vehicle to the head of the vehicle.

A battery pack includes at least one battery unit. The battery unit includes at least one battery string. The battery string includes one or at least two cells. A voltage difference across the battery string is less than or equal to 60 V. When the battery string includes at least two cells, the cells in the battery string are arranged sequentially along a first direction, and the first direction is parallel to a direction from the tail of the vehicle to the head of the vehicle.

An apparatus includes a battery pack with N battery bricks, each with a DC output voltage. The output of each brick is connected in series providing a bus voltage. Each brick includes battery power modules (“BPMs”) connected in parallel and each connected to a battery cell. Each BPM charges/discharges the connected battery cell. Each brick has a battery brick controller that provides a control signal to each brick's BPMs. A control signal of a BPM is derived from a BPM error signal that includes a battery cell current of the battery cell of BPM subtracted from a summation of an average current signal, a local droop current and a balancing current. The balancing current is based on a current SOC of the battery cell connected to the BPM and a desired SOC for the battery cell connected to the BPM. A BMS derives the balancing current for the BPMs.