Systems and methods for performing battery management
First Claim
1. A battery management system comprising:
- a plurality of cells coupled in series between a positive terminal and a negative terminal;
a first node controller electrically coupled to a first set of node subsystems, the first node controller powered by a first cell or set of cells of the plurality of cells; and
a second node controller electrically coupled to a second set of node subsystems, the second node controller powered by a second cell or set of cells of the plurality of cells, wherein the second set of cells differs from the first set of cells;
an output control circuit positioned in series with the one or more cells between the positive terminal and the negative terminal, the output control circuit further coupled to the first node controller, the second node controller, or both;
wherein the output control circuit comprises a transistor positioned in series with the one or more cells, wherein a control input of the transistor is coupled to the first control node or to the second control node;
wherein the first node controller or the second node controller is configured to;
selectively apply a signal to the control input to enable the transistor when the plurality of cells are not charging; and
selectively refrain from applying the signal to the control input when the plurality of cells are charging.
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Accused Products
Abstract
Systems and methods for battery management are disclosed. A system may include an internal control network including multiple node controllers powered by a unique cell or combination of cells of a battery. The node controllers may communicate with each other via a node communication system. Each node controller may be responsible for managing a charge level associated with one or more cells. The one or more devices of the internal control network may enable measurement of environmental factors such as a temperature and a current and voltage applied at the battery. Based on the measured environmental factors, the internal control network may perform an ongoing assessment of the one or more cells of the battery and of an overall battery condition. The internal control network may initiate turning on or off a battery output to prevent over discharge and possible damage to the battery or devices connected to the battery.
14 Citations
10 Claims
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1. A battery management system comprising:
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a plurality of cells coupled in series between a positive terminal and a negative terminal; a first node controller electrically coupled to a first set of node subsystems, the first node controller powered by a first cell or set of cells of the plurality of cells; and a second node controller electrically coupled to a second set of node subsystems, the second node controller powered by a second cell or set of cells of the plurality of cells, wherein the second set of cells differs from the first set of cells; an output control circuit positioned in series with the one or more cells between the positive terminal and the negative terminal, the output control circuit further coupled to the first node controller, the second node controller, or both; wherein the output control circuit comprises a transistor positioned in series with the one or more cells, wherein a control input of the transistor is coupled to the first control node or to the second control node; wherein the first node controller or the second node controller is configured to; selectively apply a signal to the control input to enable the transistor when the plurality of cells are not charging; and selectively refrain from applying the signal to the control input when the plurality of cells are charging. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification