Vehicle battery system balancing systems and methods
First Claim
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1. A system comprising:
- a battery system comprising a plurality of battery sections, each section of the plurality of sections comprising a plurality of cells;
a plurality of sensors coupled to the plurality of sections configured to measure an electrical parameter associated with each of the plurality of sections;
a balancing system coupled to the plurality of sections configured to selectively change amounts of energy stored in the plurality of sections;
battery control electronics communicatively coupled to the plurality of sensors and the balancing system, the battery control electronics being configured to;
determine a state of charge of each of the plurality of sections based upon the electrical parameter,calculate a plurality of quanta of energy required for each of the plurality of battery sections to reach a charge termination level associated with a charging operation of the battery system balancing point, andcontrol the balancing system to selectively change the amounts of energy stored in the plurality of sections such that each of the plurality of quanta of energy is within a particular range.
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Abstract
System and methods for balancing a vehicle battery system are presented. In certain embodiments, a method for balancing a vehicle battery system including a plurality of sections may include calculating a plurality of quanta of energy required for each of the plurality of sections to reaching a balancing point. Based at least in part on the calculated plural of quanta of energy, it may be determined that the plurality of sections of the battery system are unbalanced. To balance the battery system, a balancing system may be selectively actuated to change the amounts of energy stored in one or more of the plurality of cells such that the plurality of quanta of energy are within a particular range.
23 Citations
16 Claims
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1. A system comprising:
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a battery system comprising a plurality of battery sections, each section of the plurality of sections comprising a plurality of cells; a plurality of sensors coupled to the plurality of sections configured to measure an electrical parameter associated with each of the plurality of sections; a balancing system coupled to the plurality of sections configured to selectively change amounts of energy stored in the plurality of sections; battery control electronics communicatively coupled to the plurality of sensors and the balancing system, the battery control electronics being configured to; determine a state of charge of each of the plurality of sections based upon the electrical parameter, calculate a plurality of quanta of energy required for each of the plurality of battery sections to reach a charge termination level associated with a charging operation of the battery system balancing point, and control the balancing system to selectively change the amounts of energy stored in the plurality of sections such that each of the plurality of quanta of energy is within a particular range. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for balancing a plurality of sections included in a battery system comprising:
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calculating a plurality of quanta of energy required for each of the plurality of sections to reaching a charge termination level associated with a charging operation of the battery system; determining, based on the calculated plurality of quanta of energy, that the plurality of sections of the battery system are unbalanced; and selectively actuating a balancing system to change the amounts of energy stored in one or more of the plurality of cells such that the plurality of quanta of energy are within a particular range. - View Dependent Claims (8, 9, 10, 11)
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12. A non-transitory computer-readable storage medium storing instructions that, when executed by a processor, cause the processor to perform a method comprising:
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calculating a plurality of quanta of energy required for each of a plurality of sections included in a battery system to reaching a charge termination level associated with a charging operation of the battery system; determining, based on the calculated plurality of quanta of energy, that the plurality of sections of the battery system are unbalanced; and selectively actuating a balancing system to change the amounts of energy stored in one or more of the plurality of cells such that the plurality of quanta of energy are within a particular range. - View Dependent Claims (13, 14, 15, 16)
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Specification