Capacitor quick-charge apparatus

• US 10,615,623 B2
• Filed: 07/20/2018
• Issued: 04/07/2020
• Est. Priority Date: 07/20/2017
• Status: Active Grant

• Current Assignee: Doohyun Infra Co., Ltd.
• Original Assignee: Doohyun Infra Co., Ltd.
• Inventors: Kang, Eui Suk
• Primary Examiner(s): Tso, Edward
• Assistant Examiner(s): Piggush, Aaron
• Application Number:
  US16/041,622
• Publication Number:
  US 20190070965A1
• Time in Patent Office: 627 Days
• Field of Search: 320143, 320145, 320159, 320166
• CPC Class Codes: B60L 50/40 using propulsion power supplied by capacitors
• CPC Class Codes: G01R 31/392 Determining battery ageing or deterioration, e.g. state of health
• CPC Class Codes: G01R 31/64 Testing of capacitors
• CPC Class Codes: H02J 7/00032 characterised by data exchange
• CPC Class Codes: H02J 7/0014 Circuits for equalisation of charge between batteries
• CPC Class Codes: H02J 7/0016 using shunting, discharge or bypass circuits
• CPC Class Codes: H02J 7/00711 with introduction of pulses during the charging process
• CPC Class Codes: H02J 7/00714 in response to battery charging or discharging current
• CPC Class Codes: H02J 7/345 using capacitors as storage or buffering devices
• CPC Class Codes: H03K 5/24 the characteristic being amplitude
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/72 Electric energy management in electromobility
• CPC Class Codes: Y02T 10/92 Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

The capacitor quick-charge apparatus includes an input AC power source, a phase modulator, a rectifier, a shunt, a module current supply, a current control element, a capacitor, a resistance, a comparator, a variable resistor, an Operational Amplifier 1 (OP AMP 1) to an Operational Amplifier 5 (OP AMP 5), an Auto Voltage Regulator (AVR) or a Micro Control Unit (MCU), and a monitor system.

Claims

1. A capacitor quick-charged apparatus, the apparatus comprising:

a phase modulator configured to modulate a phase of a voltage waveform with respect to an input power source AC to control an intensity of a direct voltage (DV) and a direct current (DC), thereby shortening a charging time;

a rectifier configured to convert a phase-modulated AC voltage through the phase modulator into a DC voltage and acting as a noise filter;

a shunt connected to the rectifier in parallel for detecting the DC voltage through the rectifier to broaden a measurement range of a current and to detect an error;

a current supply configured to pass the current received from the shunt therethrough to capacitors;

a current control device configured to control the current supplied to the capacitors from the current supply;

the capacitors configured to being charged from the current outputted from the current control device;

a resistor configured to block an access current generating an excessive heat in a smoothing circuit device for protecting the capacitors;

a comparator configured to compare a voltage across both ends of the shunt and a voltage across a variable resistor with an equilibrium value, and to transmit a compared result to the phase modulator for changing a value of the current flowing to the capacitors to control rapid charging;

a variable resistor having a passive protection circuit function configured to manually set a symmetric value of a voltage if the input power source AC and the capacitors are connected serially;

a first operational amplifier (OP AMP 1) configured to amplify a symmetric value of the voltage controlled by the variable resistor;

a second operational amplifier (OP AMP 2) configured to amplify the current value supplied from the shunt;

a third operational amplifier (OP AMP 3) configured to amplify a voltage between ends of the capacitors; and

an automatic voltage regulator (AVR) having an automatic protection circuit function configured to receive a signal from the third operational amplifier (OP AMP 3) and to confirm an initial charge voltage and a final discharge voltage of the capacitor; and

a Pulse-Width Modulation (PWM) generator configured to rapidly charge the capacitors by comparing the current value adjusted by the variable resistor according to the current value transmitted from the comparator if the waveform of the signal pulse transmitted from the AVR is a manual signal or rapidly charge the capacitors according to a phase modulated current based upon a signal outputted from the comparator if the waveform of the signal pulse transmitted from the AVR is an automatic control.

2. The capacitor quick-charge apparatus of claim 1, wherein the input power source (AC) is 220V to 380V and the electric power source is a high voltage of 440V to 1,000V when an electric vehicle (EV) is charged.

3. The capacitor quick-charge apparatus of claim 1, wherein the current control device maintains a final discharge voltage constantly according to the charging of the capacitors so that an ultra-rapid charge is performed and corrects an error range of among cells in the capacitors.

4. The capacitor quick-charge apparatus of claim 1, wherein the current control device has a cutoff and a bypass functions for controlling an input voltage and an input current to the capacitors.

5. The capacitor quick-charge apparatus of claim 1, the capacitor rapid charging apparatus further comprising:

a monitor system for allowing the user to check a charging amount of the capacitor by a signal amplified by the OP AMP 1 to OP AMP 3 and transmitted through the AVR, an electricity usage fee, and an abnormality of the capacitor rapid charging apparatus, thereby having a function of Internet of Things (IoT).

6. The capacitor quick-charge apparatus of claim 1, further comprising:

n-3 OP AMPs configured to add to the OP AMP 1 to OP AMP 3 in parallel to check a presence or an absence of abnormality in each capacitor in the AVR by measuring the capacitor voltage for each phase of the apparatus, to calculate data of the total charge power by summing the measured capacitor voltages, to calculate a current lifetime of the capacitor and a future service life based upon the calculated data, and to inform an replacement period of the capacitor to the user.

7. The capacitor quick-charge apparatus of claim 1, wherein the capacitor quick-charge charge apparatus removes any one of the PWM generator or the comparator when the apparatus is a small-sized capacitor quick-charge apparatus.

8. The capacitor quick-charge apparatus of claim 1, wherein the current control device is selected from any one of an Insulated gate bipolar transistor (IGBT), a Transistor (TR), and a Field Effect Transistor (FET).