Switching method, circuit and system
A switching system and switching circuit technology, applied in the field of switching methods, circuits and systems, can solve the problems that the battery energy storage system cannot continue to work, the power conversion circuit cannot continue to output electric energy, etc.
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Embodiment 1
[0052] An embodiment of the present invention provides a switching system, which is set in a battery energy storage system including a power conversion circuit, such as figure 1 As shown in the solid line part, the switching system includes:
[0053] A switching circuit 11, the first end of the switching circuit 11 is connected to the first power supply 13, and the first end of the switching circuit 11 is also connected to the second power supply 14;
[0054] The power conversion circuit 12 is connected to the second terminal of the switching circuit 11 .
[0055] Specifically, in addition to the power conversion circuit, the battery energy storage system also includes an electronic control circuit. After the power conversion circuit converts the electric energy, it transmits the converted electric energy to the electronic control circuit, and the electronic control circuit uses the converted electric energy to work. Realize the control of the battery energy storage system. ...
Embodiment 2
[0069] On the basis of Embodiment 1, this embodiment of the present invention provides a switching circuit, which is applied to the switching system in Embodiment 1, such as figure 2 As shown in the solid line part, the switching circuit 11 includes:
[0070] Power lines, the power lines include: a first power line L1, a second power line L2, a third power line L3 and a fourth power line L4; the first end of the first power line L1 is connected to the first power supply 13, the second end of the first power transmission line L1 is connected to the positive pole of the power conversion circuit 12; the first end of the second power transmission line L2 is connected to the negative pole of the first power supply 13, so The second end of the second power transmission line L2 is connected to the negative pole of the power conversion circuit 12; the first end of the third power transmission line L3 is connected to the positive pole of the second power supply 14, and the third power...
Embodiment 3
[0074] The embodiment of the present invention provides the working principle of the switching system before and after power switching, including:
[0075] The first power supply and the second power supply output electric energy to the switching circuit respectively, so that the coil generates an electromagnetic effect after a current flows through the coil; The closed switch is turned off, and the electric energy transmitted by the third power line is blocked; the first power supply outputs electric energy to the power conversion circuit through the first power line and the second power line.
[0076] The first power supply stops outputting electric energy to the switching circuit, so that the electromagnetic effect generated by the coil disappears after the current in the coil disappears; the coil stops pulling the armature, so that the normally closed switch connected to the armature is closed , the electric energy transmitted by the third power line is turned on; wherein,...
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