| 摘要 |
A circuit includes a power supply configured to generate a supply voltage, an electrical load coupled to receive the supply voltage from the power supply, and a switching circuit. The switching circuit has a first terminal coupled to a first terminal of the electrical load, a second terminal, and a third, control terminal. The first and second terminals of the switching circuit correspond to current conducting terminals of the switching circuit. The circuit also includes a current sensing circuit and at least one battery having a first terminal coupled to a corresponding terminal of the current sensing circuit. The circuit additionally includes a battery measurement circuit having a first terminal coupled to the control terminal of the switching circuit and at least a second terminal coupled to first and second opposing terminals of the at least one battery. |
| 主权项 |
1. In a system including a power supply configured to generate a supply voltage, an electrical load configured to receive the supply voltage, and a battery pack comprising at least one battery, a battery management circuit for managing the battery pack, the battery management circuit having first and second terminals configured to be coupled to first and second opposing terminals of the power supply and first and second opposing terminals of the electrical load, and having third and fourth terminals configured to be coupled to first and second opposing terminals of the at least one battery, the battery management circuit comprising:
a switching circuit having a first terminal coupled to the first terminal of the battery management circuit, a second terminal, and a third, control terminal; a current sensing circuit having a first terminal coupled to the second terminal of said switching circuit, a second terminal coupled to the control terminal of said switching circuit, and a third terminal coupled to the third terminal of the battery management circuit, said current sensing circuit configured to receive a current signal from said switching circuit, measure a direction of the current signal, and provide a current sensing signal indicative of the direction of the current signal at the second terminal of said current sensing circuit; and a battery measurement circuit having a first terminal coupled to the control terminal of said switching circuit and at least a second terminal coupled to the first and second terminals of the at least one battery, said battery measurement circuit configured to measure one or more characteristics of the at least one battery and provide a battery measurement signal in response thereto at the first terminal of the battery measurement circuit, wherein a control signal corresponding to the current sensing signal and the battery measurement signal controls current flow through the current conducting terminals of said switching circuit. |
