Detection circuit and method for starting charging
First Claim
1. A detection circuit for starting charging, having a cell anode terminal, a high-level charging input terminal and a low-level charging input terminal, and comprising:
- a cell connector, wherein a first anode contact feedback terminal, a second anode contact feedback terminal, an electric-quantity feedback data terminal, an electric-quantity feedback clock terminal and a cathode contact feedback terminal of the cell connector are coupled to a first anode contact receiving terminal, a second anode contact receiving terminal, an electric-quantity receiving terminal, a clock terminal, and a cathode contact receiving terminal of a first controller respectively, the first anode contact feedback terminal is coupled to the cell anode terminal, and the cell connector is configured to generate an anode contact signal when it is detected whether an anode of the cell is contacted, to generate a cathode contact signal when it is detected whether a cathode of the cell is contacted, to generate an electric quantity signal when an electric quantity of the cell is detected, and to send the anode contact signal, the cathode contact signal and the electric quantity signal to the first controller;
the first controller, wherein a first enable terminal and a first data terminal of the first controller are coupled to a second enable terminal and a second data terminal of a second controller respectively, a first control terminal of the first controller is coupled to a first controlled terminal of a switch circuit, the first controller has a third data terminal and a fourth data terminal, and is configured to send the anode contact signal, the cathode contact signal and the electric quantity signal received to the second controller, to send a charging request signal to the second controller if the charging request signal sent by a charging adapter is received, to receive a start instruction sent by the second controller, and to send a connection instruction to the switch circuit if the start instruction is received;
the second controller, configured to receive the charging request signal sent by the first controller, to receive the anode contact signal, the cathode contact signal and the electric quantity signal sent by the first controller, and to send the start instruction to the first controller if the charging request signal is received, it is determined that the anode of the cell is well contacted according to the anode contact signal, it is determined that the cathode of the cell is well contacted according to the cathode contact signal, and it is determined that a voltage of the cell does not exceed a voltage threshold according to the electric quantity signal;
the switch circuit, wherein a cell terminal and a charging terminal of the switch circuit are coupled to the cell anode terminal and the high-level charging input terminal respectively, a second controlled terminal of the switch circuit is coupled to a second control terminal of the first controller, and the switch circuit is configured to connect the charging terminal with the cell terminal if the connection instruction sent by the first controller is received, such that the charging adapter charges the cell.
1 Assignment
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Accused Products
Abstract
A detection circuit and a detection method for starting charging are provided. The detection circuit comprises a cell connector, a first controller, a second controller and a switch circuit. The first controller sends an anode contact signal, a cathode contact signal and an electric quantity signal received from the cell connector to the second controller; the second controller sends a start instruction to the first controller if a charging request signal is received, the anode of the cell is well contacted, the cathode of the cell is well contacted, and a voltage of the cell does not exceed a voltage threshold; the first controller sends a connection instruction to the switch circuit to control connection of a charging terminal and a cell terminal of the switch circuit, such that a charging adapter charges the cell through the switch circuit.
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Citations
20 Claims
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1. A detection circuit for starting charging, having a cell anode terminal, a high-level charging input terminal and a low-level charging input terminal, and comprising:
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a cell connector, wherein a first anode contact feedback terminal, a second anode contact feedback terminal, an electric-quantity feedback data terminal, an electric-quantity feedback clock terminal and a cathode contact feedback terminal of the cell connector are coupled to a first anode contact receiving terminal, a second anode contact receiving terminal, an electric-quantity receiving terminal, a clock terminal, and a cathode contact receiving terminal of a first controller respectively, the first anode contact feedback terminal is coupled to the cell anode terminal, and the cell connector is configured to generate an anode contact signal when it is detected whether an anode of the cell is contacted, to generate a cathode contact signal when it is detected whether a cathode of the cell is contacted, to generate an electric quantity signal when an electric quantity of the cell is detected, and to send the anode contact signal, the cathode contact signal and the electric quantity signal to the first controller; the first controller, wherein a first enable terminal and a first data terminal of the first controller are coupled to a second enable terminal and a second data terminal of a second controller respectively, a first control terminal of the first controller is coupled to a first controlled terminal of a switch circuit, the first controller has a third data terminal and a fourth data terminal, and is configured to send the anode contact signal, the cathode contact signal and the electric quantity signal received to the second controller, to send a charging request signal to the second controller if the charging request signal sent by a charging adapter is received, to receive a start instruction sent by the second controller, and to send a connection instruction to the switch circuit if the start instruction is received; the second controller, configured to receive the charging request signal sent by the first controller, to receive the anode contact signal, the cathode contact signal and the electric quantity signal sent by the first controller, and to send the start instruction to the first controller if the charging request signal is received, it is determined that the anode of the cell is well contacted according to the anode contact signal, it is determined that the cathode of the cell is well contacted according to the cathode contact signal, and it is determined that a voltage of the cell does not exceed a voltage threshold according to the electric quantity signal; the switch circuit, wherein a cell terminal and a charging terminal of the switch circuit are coupled to the cell anode terminal and the high-level charging input terminal respectively, a second controlled terminal of the switch circuit is coupled to a second control terminal of the first controller, and the switch circuit is configured to connect the charging terminal with the cell terminal if the connection instruction sent by the first controller is received, such that the charging adapter charges the cell. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A detection method for starting charging, applied in a detection circuit for starting charging comprising a cell connector, a first controller, a second controller and a switch circuit, and comprising:
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with the cell connector, detecting in real time whether an anode of a cell is in contact and generating an anode contact signal, detecting in real time whether a cathode of the cell is in contact and generating a cathode contact signal, detecting an electric quantity of the cell in real time and generating an electric quantity signal, and sending the anode contact signal, the cathode contact signal and the electric quantity signal to the first controller; with the first controller, sending the anode contact signal, the cathode contact signal and the electric quantity signal to the second controller; with the first controller, sending a charging request signal to the second controller if the charging request signal sent by the charging adapter is received; with the second controller, sending a start instruction to the first controller, if the charging request signal is received, it is determined the anode of the cell is well contacted according to the anode contact signal, it is determined that the cathode of the cell is well contacted according to the cathode contact signal, and it is determined that a voltage of the cell does not exceed a voltage threshold according to the electric quantity signal; with the first controller, sending a connection instruction to the switch circuit if the start instruction is received; with the switch circuit, connecting a cell terminal with a charging terminal if the connection instruction sent by the first controller is received, such that the charging adapter charges the cell. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification