A safe power circuit
A technology of safe power supply and voltage detection circuit, applied in battery circuit devices, circuit devices, measuring current/voltage, etc., can solve overvoltage, overcurrent, reverse charging without protection, charger and battery positive and negative poles cannot be automatically matched And other issues
Inactive Publication Date: 2017-03-01
ANHUI ZHENGMIN VEHICLE IND
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Problems solved by technology
[0003] In order to overcome the deficiencies of the above technologies, the present invention provides a safe power supply circuit, which solves the problems of overvoltage, overcurrent, reverse charging without protection, and the problem that the positive and negative poles of the charger and the battery cannot be automatically matched, making electric vehicles safer , more humane
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[0024] In order to facilitate those skilled in the art to better understand the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. The following is only exemplary and does not limit the protection scope of the present invention.
[0025] Such as figure 1 As shown, the safety power supply circuit of the present invention includes a single-chip microcomputer control circuit 6, a loop protection circuit 1, and a step-down and stable voltage power supply circuit 2 for supplying power to the single-chip microcomputer control circuit. The output end of the loop protection circuit is connected to a voltage detection circuit 4, One end of the output end of the voltage detection circuit 4 is connected with the single-chip microcomputer control circuit 6, and one end is connected with the loop switch protection circuit 3, and the output end of the loop switch protection circuit 3 is co...
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A safe power supply circuit of the invention comprises a single-chip microcomputer control circuit, a loop protecting circuit and a voltage reducing and stabilizing power supply circuit which supplies electric power to the single-chip microcomputer control circuit. The output end of the loop protecting circuit is connected with a voltage detecting circuit. One end of the output end of the voltage detecting circuit is connected with the single-chip microcomputer control circuit, and the other end is connected with a loop switch protecting circuit. The output end of the loop switch protecting circuit is connected with a current detecting circuit. The output end of the current detecting circuit is connected with the single-chip microcomputer control circuit. The output end of the single-chip microcomputer control circuit is connected with a voltage detecting circuit. The safe power supply circuit can settle the problems of no protecting measures for overvoltage, overcurrent and reverse charging; and incapability of realizing automatic matching between a charger and an anode and a cathode of a battery. Higher safety and higher user-friendly performance of an electric vehicle are realized.
Description
technical field [0001] The invention relates to a safe power supply circuit, which belongs to the technical field of intelligent and safe charging of electric vehicles. Background technique [0002] At present, the charging of electric vehicles is directly connected to the battery of the electric vehicle by the charger, and it is necessary to confirm the matching of the charging current and voltage of the charger and the battery, and the connection of the positive and negative poles is correct, because the mismatch between the charger and the battery will cause overcurrent, overvoltage, and reverse charging. Waiting for the charging state will cause the temperature of the charger and the battery to rise sharply. If it is light, the charger itself will be damaged or the life of the battery will end in a short time. If it is serious, it will cause a fire or even fatal consequences. Contents of the invention [0003] In order to overcome the deficiencies of the above technolo...
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IPC IPC(8): H02J7/00H02M3/156H02H3/08H02H3/20G01R19/165
Inventor 张永光张倩刘景全
Owner ANHUI ZHENGMIN VEHICLE IND