Load power supply control loop
A load control and power supply control technology, applied in circuit devices, battery circuit devices, current collectors, etc., can solve the problems of untimely monitoring of battery power, shortening battery life, and labor consumption, avoiding excessive discharge and redundancy. Steps, quick response effect
Inactive Publication Date: 2015-03-18
HANGZHOU DIANZI UNIV
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Problems solved by technology
At present, most of the batteries on the market are not equipped with a voltage over-discharge detection control circuit. The detection of the battery is based on the experience of the staff to regularly check the power of the battery. shortened battery life
Method used
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[0012] The present invention will be further described below in conjunction with the accompanying drawings.
[0013] Such as figure 1 As shown, a battery-powered load control circuit includes a battery pack, a start-up circuit, a load control main circuit, a power supply voltage limit comparison circuit, and a load cut-off power supply circuit.
[0014] The start-up loop includes a filter capacitor C5 and a third resistor R3. One end of the filter capacitor C5 is connected to the positive pole "+" of the battery BT1, the other end of C5 is connected to one end of the third resistor R3, and the other end of R3 is connected to the control terminal of the thyristor Q2. The filter capacitor C5 and the third resistor R3 together form a start-up circuit for the control electrode of the thyristor Q2. When the power supply voltage of battery BT1 is normal, once the circuit is energized, the field effect transistor Q1 is connected immediately, so that the load can obtain power supply...
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The invention discloses a control loop with a storage battery supplying power for a load. Most of existing storage batteries are not provided with a voltage detection protection circuit, the over discharge phenomenon is severe, and the service life of the storage batteries is shortened largely. The load power supply control loop comprises a storage battery set, a power-on loop, a power supply voltage limiting value comparison circuit, a cut-off load power circuit and a load control main circuit. A thyristor Q2 and a field-effect tube Q1 are switched to control the power on and power failure of the whole load power supply control loop. The load control loop decides the switching of the thyristor Q2 and the field-effect tube Q1 according to the requirements for the power supply of the load, and the power supply voltage limiting value comparison circuit is used for controlling the power supply that the field-effect tube Q1 is closed and then the load is opened. An artificial circuit is adopted to build the circuit, the price is low, the application is easy and convenient, electric quantity with which the storage batteries supplies the load can be detected and controlled widely in real time, and the service life of the storage batteries is prolonged greatly.
Description
technical field [0001] The invention relates to a load power supply control loop, in particular to a circuit, in particular to a control loop for a storage battery to supply power to a load. Background technique [0002] The storage battery is a common power supply device for powering loads in daily life and production. The load consumes electric energy regularly according to the needs of the operation purpose, so the electric energy of the battery is always in the state of "full", "underfull" and "insufficient" with no definite period. When the battery is in the "full" and "less full" state, the normal power supply to the load must be guaranteed, and when the battery is in the "insufficient" state, the load power supply must be cut off. At present, most of the batteries on the market are not equipped with a voltage over-discharge detection control circuit. The detection of the battery is based on the experience of the staff to regularly check the power of the battery. sho...
Claims
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IPC IPC(8): H02J7/00
Inventor 朱亚萍杨成忠刘文亮
Owner HANGZHOU DIANZI UNIV