Balancing apparatus, and battery management system and battery pack including the same
AssigneeLG Energy Solution, Ltd.
InventorYeo-Bong Yoon
Life of this patent
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Abstract
A balancing apparatus, a battery management system and a battery pack including the battery management system are described. The balancing apparatus includes a voltage regulator to generate a first high level voltage from a voltage of an auxiliary battery, a power switch electrically connected to a high voltage node of a battery group, a DC-DC converter to generate a second high level voltage from a voltage applied to a voltage input terminal, a balancing unit including a plurality of balancing circuits connected in parallel to a plurality of battery cells of the battery group; and a control unit to hold the first high level voltage applied to the control terminal of the power switch in response to the second high level voltage being applied to the power terminal.
Claims12
A battery balancing apparatus, comprising:
- a voltage regulator configured to selectively generate a first high level voltage from a voltage of an auxiliary battery;
- a power switch including a first current terminal, a second current terminal and a control terminal, the first current terminal being electrically connected to a high voltage node of a battery group;
- a DC-DC converter including a voltage input terminal and a voltage output terminal, the DC-DC converter being configured to generate a second high level voltage from a voltage applied to the voltage input terminal and output the second high level voltage to the voltage output terminal, and the voltage input terminal being electrically connected to the second current terminal;
- a balancing unit including a plurality of balancing circuits, the plurality of balancing circuits being connected in parallel to a plurality of battery cells included in the battery group, respectively;
- and
- a control unit including a power terminal, a hold terminal and a plurality of balancing terminals, the power terminal being electrically connected to the voltage output terminal, the hold terminal being electrically connected to the control terminal, and the plurality of balancing terminals being electrically connected to the plurality of balancing circuits, respectively,
- wherein the control unit is configured to hold the first high level voltage through the hold terminal in response to the second high level voltage being applied to the power terminal.
Dependencies are inferred from the claim text.