Battery-Cell Converter Management Systems
First Claim
1. A Battery Cell Converter system comprising:
- one or more energy-storing battery cells each having high and low voltage terminals; and
one or more DC/DC converters each having input and output terminals;
wherein high and low-voltage terminals of each of said energy-storing battery cells is coupled to or integrate with input terminals of one or more of said DC/DC converters; and
wherein the output terminals of each DC/DC converter constitute an output of the Battery Cell Converter system.a monitoring &
control unit which comprising one or more of the following functions;
a) measures voltage across each single battery cell or each group of direct parallel-connected battery cellsb) fuel gauging and monitoring of the State of Charge of each single battery cell or each groups of battery cellsc) control the charging circuits to chargei. each of the single battery cell or each group of direct parallel-connected battery cells, orii. all of the battery cells as a group.
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Abstract
A battery cell converter (BCC) unit including one or more energy-storing battery cells coupled to one or more DC/DC converters is disclosed. A management unit can monitor and control the charging and discharging of each battery cells; including monitoring of voltages & State-of-Charge of each cell as well as controlling the switching of the DC/DC converters. The combined power and cell switching algorithms optimizes the charging and discharging process of the battery cells. A compound battery cell converter system comprising a series stack of BCCs to achieve high effective converter output voltage is also disclosed. The new proposed Battery Cell Converter architecture will enable improvements in battery pack usage efficiencies, will increase battery pack useable time per charge, will extend battery pack life-time and will lower battery pack manufacturing cost.
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Citations
25 Claims
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1. A Battery Cell Converter system comprising:
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one or more energy-storing battery cells each having high and low voltage terminals; and one or more DC/DC converters each having input and output terminals; wherein high and low-voltage terminals of each of said energy-storing battery cells is coupled to or integrate with input terminals of one or more of said DC/DC converters; and wherein the output terminals of each DC/DC converter constitute an output of the Battery Cell Converter system. a monitoring &
control unit which comprising one or more of the following functions;a) measures voltage across each single battery cell or each group of direct parallel-connected battery cells b) fuel gauging and monitoring of the State of Charge of each single battery cell or each groups of battery cells c) control the charging circuits to charge i. each of the single battery cell or each group of direct parallel-connected battery cells, or ii. all of the battery cells as a group. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification