Battery charging apparatus
A battery charging and battery technology, applied in battery circuit devices, current collectors, electric vehicles, etc., can solve the problems of increased volume and weight, increased volume and cost of battery charging equipment, and increased manufacturing cost of battery charging equipment.
Inactive Publication Date: 2009-06-17
HYUNDAI MOTOR CO LTD
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Problems solved by technology
[0004] Moreover, because the charging current and voltage provided by the external power supply through the charger must be high enough to quickly charge the battery, this requires a high capacity battery device, increasing the size and cost of battery charging equipment
[0005] The charger can be composed of multiple insulated gate bipolar transistors (IGBTs), capacitors, and controllers, and the volume and weight of multiple IGBTs and capacitors must increase, resulting in increased manufacturing costs for battery charging equipment using such high-capacity devices
Method used
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[0022] Reference will be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements. The embodiments are described below in order to explain the present invention by referring to the figures.
[0023] refer to figure 1 , which shows a circuit diagram of a battery charging device according to a preferred embodiment of the present invention.
[0024] As shown, the battery charging device 100 includes an AC power source 110 , a three-phase motor 120 , an inverter 130 and a diode 140 . The battery charging device 100 can be used as a device for charging batteries of various vehicles including electric vehicles, plug-in fuel cell vehicles, or plug-in hybrid vehicles.
[0025] First, the AC power source 100 includes a first electrode 111 and a second electrode 112 . The first electrode 111 is connected to the neutral point of the three-phase motor 120 ...
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The present invention provides a battery charging apparatus with reduced weight, volume and manufacturing cost. The apparatus includes: an alternating current power source including a first electrode and a second electrode and supplying an alternating voltage for charging the battery; a diode including an anode electrode connected to the battery and a cathode electrode connected to the second electrode and half-wave rectifying the alternating voltage applied from the alternating current power source; a three-phase motor connected to the first electrode and transmitting to the battery the half-wave rectified voltage applied from the diode and the alternating current power source; and an inverter connected between the three-phase motor and the battery and converting the voltage applied from the three-phase motor into a direct voltage to transmit the direct voltage to the battery. Alternatively, the apparatus may comprise an alternating current power source, an inverter, a three-phase motor and a switching unit.
Description
technical field [0001] The present invention relates to battery charging devices. More particularly, the present invention relates to battery charging devices having reduced weight, volume and manufacturing costs. Background technique [0002] A battery charging device of a vehicle stores energy supplied from an external power source in a high-voltage battery, and the vehicle is driven by the energy stored in the battery. [0003] In this case, since the voltage supplied from the external power source is an alternating current, the battery charging device requires an independent charger to convert the alternating voltage into a direct current voltage and supply it to the battery. [0004] Moreover, because the charging current and voltage provided by the external power supply through the charger must be high enough to quickly charge the battery, this requires a high capacity battery device, increasing the size and cost of the battery charging equipment. [0005] A charger ...
Claims
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IPC IPC(8): H02J7/00H02J7/02H02J7/14
CPCH02J7/1415Y02T10/7005Y02T10/70
Inventor 宋泓锡张志勋李永国郑镇换
Owner HYUNDAI MOTOR CO LTD