Abstract: The present invention is drawn to a high power electrochemical energy storage device in a bipolar configuration, comprising at least n stackable cells in bipolar configuration wherein subgroups of m cells are electronically monitored. The storage cells have a lithium ion insertion anode and a lithium ion insertion cathode, a separator, an electrolyte system, and a leak-proof seal structure. A number of embodiments are disclosed, characterized by a favorable range of m values, in combination with the anode-to-cathode capacity ratio, electrolyte conductivity, and other battery key features, thereby providing a high power device providing long cycle life and excellent power performance over many thousand charge and discharge cycles while minimizing the cost for electronic monitoring.

Abstract: The present invention is drawn to a high power electrochemical energy storage device in a bipolar configuration, comprising at least n stackable cells (20) in bipolar configuration wherein subgroups of m cells are electronically monitored (63). The storage cells (20) have a lithium ion insertion anode (24) and a lithium ion insertion cathode (26), a separator (36), an electrolyte system (36), and a leak-proof seal structure (51). A number of embodiments are disclosed, characterized by a favorable range of m values, in combination with the anode-to-cathode capacity ratio, electrolyte conductivity, and other battery key features, thereby providing a high power device providing long cycle life and excellent power performance over many thousand charge and discharge cycles while minimizing the cost for electronic monitoring.

Abstract: The present invention is drawn to a high power electrochemical energy storage device, comprising at least one stackable, monolithic battery unit. The monolithic battery unit includes at least two electrochemical energy storage cells. The cells have a lithium ion insertion anode and a lithium ion insertion cathode, a bipolar current collector between cells and end plate current collectors at the opposing ends of each battery unit. A frame may be associated with the perimeter of the current collector. The current collector comprises a high-conductivity metal. The device also has the at least two storage cells substantially aligned adjacent one another, a separator material associated between the anode and the cathode within each cell; and an electrolyte within each cell. Additionally, the present invention is drawn to a device combining two or more of the monolithic units, either in series or in parallel or any combination thereof, so as to create a high power, high voltage energy storage device.