| Patent application number | Description | Published |
|---|
| 20080290877 | Apparatus and Method of Testing for Battery - The present invention relates to an apparatus and method for testing batteries, which can prevent errors from occurring due to the tolerance of voltage sensors when the charged states of batteries are measured, and can charge a battery having a charged state deteriorated due to the difference in the resistance of each battery. The apparatus includes a voltage circuit for measuring voltages of N batteries. A resistance circuit decreases voltages of batteries, which are greater than a reference voltage. A connection switch unit selects any one of the N batteries. A divert change unit separates polarities of each battery and changes positions of an cathode and a anode of the battery depending on separated polarities. A selection switch unit selectively connects the cathode and anode of the battery to an cathode and a anode of the voltage circuit or the resistance circuit. | 11-27-2008 |
| 20090237030 | CHARGE EQUALIZATION APPARATUS - The present invention relates to a charge equalization apparatus, which allows the primary and secondary windings of a transformer to be easily fabricated, can control the flow of charge to batteries depending on the charged states of series-connected batteries, and can prevent overcurrent from flowing into a battery currently being charged. | 09-24-2009 |
| 20090302803 | CHARGE EQUALIZATION APPARATUS AND METHOD - The present invention relates, in general, to a battery voltage equalization apparatus and method, and, more particularly, to a charge equalization apparatus and method, which decrease the withstand voltages of semiconductor switching elements while maintaining charge equalization performance, thus making it easy to implement the secondary windings of transformers while reducing the costs of the charge equalization apparatus. The charge equalization apparatus includes N first transformers (T | 12-10-2009 |
| 20090322155 | CHARGE OF EQUALIZATION APPARATUS WITH PARALLEL CONNECTION OF SECONDARY WINDINGS OF MULTIPLE TRANSFORMERS - The present invention relates, in general, to a charge equalization apparatus with series-connected battery cells and, more particularly, to a charge equalization apparatus, in which series-connected battery cells (B | 12-31-2009 |
| 20100007308 | CHARGE EQUALIZATION APPARATUS - The present invention relates to a charge equalization apparatus, which can enable the primary windings and the secondary windings of transformers to be easily manufactured, can control the flow of charges into batteries depending on the charged states of series-connected batteries, and can prevent overcurrent from flowing into batteries that are currently being charged. | 01-14-2010 |
| 20100112419 | BATTERY TEMPERATURE CONTROLLER FOR ELECTRIC VEHICLE USING THERMOELECTRIC SEMICONDUCTOR - Disclosed herein is a device for controlling the temperature of batteries for electric vehicles. The device includes a thermoelectric semiconductor unit, a thermoelectric semiconductor unit, a temperature sensor, and a battery controller. The thermoelectric semiconductor unit is configured such that a portion thereof is exposed in a battery tray. The thermoelectric semiconductor unit controller causes the thermoelectric semiconductor unit to radiate heat, and causes the thermoelectric semiconductor unit to absorb heat. The temperature sensor detects and outputs the temperature of the battery tray. The battery controller outputs the heat radiating control signal to the thermoelectric semiconductor unit controller when the temperature detected by the temperature sensor is lower than a predetermined value, and outputting the heat absorbing control signal to the thermoelectric semiconductor unit controller when the temperature detected by the temperature is equal to or higher than the predetermined value. | 05-06-2010 |
| 20100148726 | CHARGE EQUALIZATION APPARATUS - The present invention relates to a charge equalization apparatus, in which series-connected batteries are divided into modules having certain sizes, and intra-module charge equalization and inter-module charge equalization are simultaneously performed, thus improving charge equalization performance and reducing the circuit size. | 06-17-2010 |
| 20100207578 | Automatic Charge Equalization Method and Apparatus for Series Connected Battery String - The present invention relates to an automatic charge equalization apparatus and method having an automatic PWM generating means for a series-connected battery string. The automatic charge equalization method and apparatus for a series-connected battery string according to the present invention can improve charge equalization by accomplishing charge equalization operation after comparing the potential of the corresponding battery cell with the average potential of the plurality of battery cells including the corresponding battery cell upon charging or discharging the corresponding battery cell. | 08-19-2010 |
| 20100207579 | Two-Stage Charge Equalization Method and Apparatus for Series-Connected Battery String - A two-stage charge equalization apparatus for a series-connected battery string comprises a battery module having a plurality of batteries connected in series; a battery string having M (M≧2) battery modules connected in series; M charge control switch modules connected in parallel to each of the M battery modules; M second DC/DC converters connected to each of the M charge control switch modules; a single first DC/DC converter connected to the M second DC/DC converter; and a microprocessor controlling the charge control switch module, wherein the first DC/DC converter is inputted with an overall potential of the battery string and outputs a potential lower than the potential inputted and each of batteries composing the battery module shares the second DC/DC converter using the charge control switch module. | 08-19-2010 |
| 20100231166 | Battery Management System with Integration of Voltage Sensor and Charge Equalizer - A battery management system according to the present invention comprises a battery module consisted of a plurality of batteries connected in series; a switch module connected in parallel to the battery module; a voltage sensor measuring a voltage of each battery composing the battery module; a charge equalizer causing each battery composing the battery module to be charged, discharged or charged/discharged; and a microprocessor controlling the switch module to determine whether to charge or discharge each battery composing the battery module according to the voltage values measured by the voltage sensor and; wherein the voltage sensor and the charge equalizer are connected in parallel to each battery composing the battery module by the switch module. | 09-16-2010 |
| 20100261064 | HIGH POWER LITHIUM UNIT CELL AND HIGH POWER LITHIUM BATTERY PACK HAVING THE SAME - Disclosed herein are a high power lithium unit cell and a high power lithium battery pack having the high power lithium unit cell. The present invention increases the width of an electrode terminal of a lithium battery, thus reducing heat generation and a potential drop due to resistance of the electrode terminal, therefore efficiently eliminating the generated heat. | 10-14-2010 |
| 20100277845 | Circuit Apparatus for Protecting a Pre-Charge Resistance Using an Interlock Switch - The present invention relates to a circuit apparatus for protecting a pre-charge resistance using an inter-lock switch, and more particularly, to a circuit apparatus for protecting a pre-charge resistance by controlling a current flowing to a voltage transformer of an electric vehicle using an inter-lock switch and a polyswitch. The present invention provides a circuit apparatus for protecting a pre-charge resistance using an inter-lock switch, including a pre-charge resistance, a pre-charge relay and a main relay placed between a battery of a hybrid electric vehicle and a voltage transformer, wherein the circuit apparatus includes an inter-lock switch which is operated complementarily with the pre-charge relay and is for preventing continuous flow of an overcurrent to the voltage transformer and the resulting damage of the pre-charge resistance. | 11-04-2010 |
| 20100283433 | CHARGE EQUALIZATION APPARATUS WITH PARALLEL CONNECTION OF PRIMARY WINDINGS OF MULTIPLE TRANSFORMERS - The present invention relates, in general, to a charge equalization apparatus for batteries and, more particularly, to a charge equalization apparatus, in which the primary windings (M | 11-11-2010 |
| 20110089898 | Two-Stage Charge Equalization Method and Apparatus for Series-Connected Battery String - A two-stage charge equalization apparatus for a series-connected battery string having a two-stage DC-DC converter including a first DC-DC converter; and a second DC-DC converter which is inputted. A battery string is divided into one or more battery modules having a plurality of battery cells connected in series, and a current conversion switch module forms a path of the charge current between the battery module and the second DC-DC converter to allow the charge current to be applied to the particular battery cell composing the battery module and controls an application direction of the charge current. A microprocessor determines a battery cell to be charged of a low-charged battery cell and controls the current conversion switch module to allow the charge current to be applied to the battery cell to be charged. | 04-21-2011 |
