An electric vehicle charger
A technology for chargers and electric vehicles, which is applied to electric vehicles, current collectors, battery circuit devices, etc., can solve the problems of small size, high production cost, and high efficiency of switching power supply chargers, and achieves the saving of enameled wire materials and reducing material costs. Cost, the effect of reducing the failure rate
Active Publication Date: 2016-03-09
江苏江工电气制造有限公司
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Problems solved by technology
[0002] Electric vehicles need to charge their batteries during use. At present, there are mainly two types of chargers on the market: power frequency transformer chargers and switching power supply chargers. The power frequency transformer chargers have a simple circuit, but are relatively large in size. Low efficiency; the switching power supply charger is small in size and high in efficiency, but the circuit structure is complicated and the production cost is high
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[0015] The specific embodiment of the present invention will now be described with reference to the accompanying drawings.
[0016] An electric vehicle charger includes a charging unit for charging a battery, a discharging unit for discharging the battery, a shutdown control unit for stopping the charging unit and the discharging unit after the battery is fully charged, and a signal filtering unit for filtering the terminal voltage signal of the battery And a regulated power supply that provides working power for the electric vehicle charger.
[0017] The charging unit is a single-phase half-wave thyristor rectifier circuit, which includes a first single-phase thyristor SCR2 and a trigger circuit, the anode of the first single-phase thyristor is connected to the live wire of the mains, and the first single-phase The cathode of the thyristor is connected to the positive pole of the battery E, and the negative pole of the battery is connected to the neutral line of the mains; th...
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The invention provides an electric bicycle charger. The electric bicycle charger comprises a charging unit for charging a storage battery, a discharge unit for discharging the storage battery, a stop control unit for controlling the charging unit and the discharging unit to stop working according to the terminal voltage of the storage battery; the charging unit is a single-phase half-wave thyristor rectifier circuit and capable of providing an appropriate charging voltage in the positive half-cycle of the mains supply; the discharge unit is used for discharging the storage battery in the negative positive half-cycle of the mains supply; the voltage output by the thyristor is realized by changing a conduction angle; compared with a switching power source type voltage regulation, the power loss on the thyristor is much lower than that of a switching tube in a switching power source, and meanwhile, the thyristor rectifier circuit comprises less components so that the fault rate can be reduced in addition to the reduction of the material cost. Compared with an industrial frequency transformer type charger, the thyristor is used for charging the storage battery so that the volume of the charger can be greatly reduced, and simultaneously, the use of a silicon steel sheet and an enameled wire material can be avoided. The electric bicycle charger is simple in circuit structure, and also capable of meeting the requirement on charging the storage battery.
Description
technical field [0001] The invention relates to a charger for an electric vehicle, in particular to a charger for single-phase half-wave thyristor rectification. Background technique [0002] Electric vehicles need to charge their batteries during use. At present, there are mainly two types of chargers on the market: power frequency transformer chargers and switching power supply chargers. The power frequency transformer chargers have a simple circuit, but are relatively large in size. Low efficiency; the switching power supply charger is small in size and high in efficiency, but the circuit structure is complicated and the production cost is high. Contents of the invention [0003] The invention provides an electric vehicle charger, which has a simple circuit structure and can reduce the manufacturing cost on the basis of meeting the charging requirements. [0004] The technical solution of the present invention is that an electric vehicle charger includes a charging uni...
Claims
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IPC IPC(8): H02J7/10
Inventor 高玉琴
Owner 江苏江工电气制造有限公司