| CPC H01M 50/531 (2021.01) [H01M 50/105 (2021.01); H01M 50/119 (2021.01); H01M 50/1243 (2021.01)] | 13 Claims |
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1. A soft pack battery module, comprising:
a battery cell, including a plurality of stacked battery units and two electric power outputs, wherein the plurality of stacked battery units is connected in series, in parallel or both, and each of the plurality of stacked battery units has an individual package structure to make charge transfer occur between two adjacent ones of the plurality of stacked battery units without an electrochemical reaction; and
a metallized plastic film package, packing the battery cell and including two sheets and an adhesion layer, each of the two sheets having an inner surface and an outer surface, the inner surface having an inner electrically-conductive area and the outer surface having an outer electrically-conductive area, wherein the inner electrically-conductive area is electrically connected with the outer electrically-conductive area, and the adhesion layer is adhered to parts of the inner surface of each of the two sheets to pack the battery cell;
wherein entire surfaces of the two electric power outputs of the battery cell are electrically connected directly with the inner electrically-conductive area of each of the two sheets respectively;
wherein the metallized plastic film package has a top outermost surface and a bottom outermost surface corresponding respectively to the outer surfaces of the two sheets and to a first polarity and a second polarity, the top outermost surface and the bottom outermost surface acting respectively as the two electric power outputs;
wherein each of the plurality of stacked battery units comprises:
two current collectors, disposed in parallel to each other;
an electrochemical system, disposed between the two current collectors, comprising:
two active material layers, being in contact with the two current collectors respectively; and
a separator, disposed between the two active material layers; and
a sealing frame, disposed between the two current collectors and adhered to the two current collectors to surround the electrochemical system;
wherein the two current collectors and the sealing frame serve as the individual package structure of each of the plurality of stacked battery units; and
wherein the uppermost current collector and the lowermost current collector of the stacked battery units at ends of the battery cell are respectively in direct contact with the inner electrically-conductive areas of the sheets to form electrical connections.
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