High-voltage direct-current system battery charging protecting circuit structure
A charging protection and system battery technology, applied in battery circuit devices, emergency protection circuit devices, circuit devices, etc., can solve problems such as inability to prevent high current charging, unreliable operation of battery charging circuits, etc., and achieve stable and reliable circuits and control principles simple effect
Inactive Publication Date: 2015-12-02
杜建国
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[0005] In order to overcome the defects of unreliable operation of the battery charging circuit in the prior art DC system and the inability to prevent high-current charging, the purpose of this application is to provide a battery charging protection circuit structure that can effectively prevent battery charging from overcurrent
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[0012] Below in conjunction with accompanying drawing, the specific embodiment of the application is described in further detail:
[0013] like figure 1 The structure of the battery charging protection circuit of the high-voltage direct current system shown in the present application changes the single busbar working mode of the current high-voltage direct current (referred to as HVDC) system to separate the output busbar of the rectifier module and increase the battery charging protection circuit, with a charging busbar and a load busbar Design the circuit.
[0014] The charging protection circuit includes a diode (D1), a contactor (K1), a shunt (C1), a controller), a load (L1), a fuse (F1), a battery pack (B1), a load bus (LoadBus), Battery bus (BatteryBus) and bus negative (Bus-).
[0015] The contactor includes coil 1 pin, coil 2 pin, the third contact and the fourth contact, the cathode of the diode (D1) and the fourth contact of the contactor (K1) are connected to the ...
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A high-voltage direct-current system battery charging protection circuit structure belongs to the high-voltage direct-current system technology field. The structure comprises a rectifying module, a battery pack and a load. The output buses of the rectifying module are divided into a battery bus and a load bus; the battery bus and the load bus are additionally provided with a charging protecting circuit which comprises a diode, a contactor, a current divider, a controller and a fuse; the contactor comprises a coil pin 1, a coil pin 2, a third contact point and a fourth contact point; the cathode of the diode and the fourth contact point of the contactor are connected with the load bus; one end of the load is connected with the load bus, and the other end is connected with the negative terminal of a direct-current bus; the anode of the diode and the third contact point of the contactor are connected with the battery bus; the battery bus is connected with the anode of the battery bus by the current divider and the fuse; the cathode of a battery is connected with the negative terminal of the battery bus; and the coil pin 1 and the coil pin 2 of the contactor are connected with the controller. The invention provides an HVDC dual bus circuit structure which can work reliably and prolong the service life of the battery.
Description
technical field [0001] The application belongs to the technical field of high-voltage direct current systems, and in particular relates to the design of busbar circuits of high-voltage direct current systems. Background technique [0002] In the prior art, the communication power supply system adopts N+1 modules to configure the number of rectifier modules, that is, it is calculated according to the designed load current plus the charging current of 0.1C10, and adopts N+1 configuration, among which N are the main ones, and N≤ At 10 o'clock, one spare, when N>10, every 10 spare one. The outputs of all rectifier modules are on the same bus, and are responsible for charging the load and the battery at the same time. When the monitor fails, the battery charging current limit will fail, and the charging module will charge the battery according to the maximum output capacity, resulting in excessive battery charging current. , thereby damaging the battery. The battery is an im...
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IPC IPC(8): H02J7/34H02H7/18
Inventor 杜建国
Owner 杜建国