Complete-set charging device for energy-saving electric vehicle
A technology of charging device and electric car, which is applied in the direction of battery circuit device, circuit device, electric vehicle, etc.
Inactive Publication Date: 2016-08-10
谢宗洺 +2
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Problems solved by technology
[0003] Usually, the energy storage electric vehicle charging station is equipped with a charging device and a low-voltage power distribution device at the same time to meet the charging function and the low-voltage power distribution function. It is necessary to set up a traction rectifier transformer and a low-voltage distribution transformer, respectively The low-voltage side adopts different voltages, and the charging device is equipped with two sets of rectification devices to operate in parallel to achieve 12-pulse rectification. The same charging device cannot simultaneously charge multiple rows of energy storage electric vehicles with different voltages.
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[0009] The present invention will be further described below in conjunction with the accompanying drawings.
[0010] Traction and distribution combined transformer 1 is connected to 35kV or 10kV AC power supply, and the low-voltage side of each phase has two 0.4kV traction rectifier coils, one 0.4kV low-voltage distribution coil, and a wiring set of two 0.4kV traction rectifier coils Different implementation phase angles differ by 30 degrees.
[0011] The two sets of traction rectifier coils of the combined traction and distribution transformer (1) are respectively connected to two sets of AC 0.4kV three-phase bridge rectifiers (2), and the two sets of AC 0.4kV three-phase bridge rectifiers (2) are respectively connected to the AC voltage. After rectification, 6-pulse DC voltages with a phase angle difference of 30 degrees are respectively output, and two groups of 6-pulse DC voltages with a phase angle difference of 30 degrees are connected in series to form 12-pulse rectific...
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The invention belongs to a complete-set charging device for an energy-saving electric vehicle, which is used for performing direct-current charging on the energy-saving electric vehicle with a charging voltage amplitude and a charging current amplitude being adjustable. The charging device mainly comprises a traction and power distribution combination transformer, two sets of alternating-current 0.4kV three-phase bridge rectifiers, one group of BUCK circuit chopper, a serial diode group and a 0.4 kV power distribution cabinet, wherein the traction and power distribution combination transformer has functions of one 12-pulse-wave traction rectifier transformer and one three-phase low-voltage power distribution transformer; the two sets of alternating-current 0.4kV three-phase bridge rectifiers are the same three-phase bridge diode rectifiers; direct-current sides of the two sets of alternating-current 0.4kV three-phase bridge rectifiers are connected in series, thereby constructing a 12-pulse-wave rectifier group; the group of BUCK circuit chopper is a BUCK circuit chopper constructed by a multi-branch IGBT (Insulated Gate Bipolar Transistor) device; the serial diode group is a high-power diode combination with two or more branches; and the 0.4kV power distribution cabinet is a power distribution cabinet constructed by a multi-loop 0.4 / 0.23kV low-voltage switch.
Description
(1) Technical field [0001] The invention relates to a complete set of charging device for an energy storage type electric vehicle. (2) Background technology [0002] The direct energy of the energy storage tram comes from the on-board DC energy storage device, and the on-board DC energy storage device needs to be charged by the ground charging device to supplement the electric energy. [0003] Usually, the charging station of energy storage type electric vehicle is equipped with charging device and low-voltage power distribution device at the same time to meet the charging function and low-voltage power distribution function. The low-voltage side uses different voltages, and the charging device is equipped with two sets of rectifiers to run in parallel to achieve 12-pulse rectification. The same charging device cannot simultaneously charge multiple trains of energy storage trams with different voltages. [0004] The invention proposes to replace one three-phase traction rec...
Claims
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IPC IPC(8): H02J7/00H02J7/10H02J3/02
CPCH02J7/0013H02J3/02H02J7/06
Inventor 谢宗洺朱华斌王子睿
Owner 谢宗洺