KR20080010048A - Electric vehicle with charger - Google Patents

Electric vehicle with charger Download PDF

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KR20080010048A
KR20080010048A KR1020060070011A KR20060070011A KR20080010048A KR 20080010048 A KR20080010048 A KR 20080010048A KR 1020060070011 A KR1020060070011 A KR 1020060070011A KR 20060070011 A KR20060070011 A KR 20060070011A KR 20080010048 A KR20080010048 A KR 20080010048A
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South Korea
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voltage
current
mode
battery
constant
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KR1020060070011A
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Korean (ko)
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KR100828554B1 (en
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서주영
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주식회사 서린건축사사무소
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B60L58/22—Balancing the charge of battery modules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/10—Constant-current supply systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Abstract

A charger in an electric vehicle for performing multi-control is provided to lengthen the life time of a battery by removing a deterioration process of the battery due to the non-uniformity of electrolyte composition of a condenser. A charger in an electric vehicle for performing multi-control includes the steps of: performing a constant-current control mode of controlling inputted current uniformly, increasing voltage, and proceeding the next step when the voltage of a condenser reaches 2[V/CELL](S100); performing a constant power control mode of maintaining the voltage of the condenser as 2.4[V/CELL](S200); performing a constant-voltage control mode of uniformly maintaining the voltage of the condenser as total 58V and reducing the inputted current(S300); performing an agitation mode of increasing the voltage of the condenser to limit the final voltage of the condenser as 2.83[V/CELL](S400); performing a stop mode of stopping the charging of the condenser for 10 to 20 minutes when the amount of current is 17% of the total amount of current inputted in the previous step(S500); and performing an equalizing mode of finishing the charging of the condenser when the voltage variation of the condenser is below 60[mV] per an hour(S600).

Description

다중제어를 수행하는 전동차량 충전기{Electric vehicle with charger}[0001] Electric vehicle with charger [

도 1은 본 발명에 따른 다중제어를 수행하는 전동차량 충전기의 충전방법을 도식화한 블럭도.1 is a block diagram illustrating a charging method of an electric vehicle charger for performing multiple control according to the present invention.

도 2는 본 발명에 적용되는 개략적인 시스템을 보인 회로도.2 is a circuit diagram showing a schematic system applied to the present invention;

*도면의 주요부분에 대한 부호 설명*Description of the Related Art [0002]

10: 충전기 20: 입력전원부10: Charger 20: Input power section

30: 제어보드30: Control board

본 발명은 다중제어를 이용해 충전기를 충전하는 충전기에 관한 것으로, 더욱 상세하게는 통상적으로 적용되는 정전류 - 정전압 제어방식에 정전력제어를 추가하여 정전력제어 구간의 충전용에 맞추어 충전기를 최적 설계할 수 있으며, 충전완료 후 축전지의 자기방전을 보상하기 위한 트리클모드 등을 추가하여 축전지 전 해액의 성층화 문제 등을 해결하여 축전지의 열화과정을 해소하여 전지의 수명을 향상시키도록 할 수 있는 다중제어를 수행하는 전동차량 충전기에 관한 것이다.The present invention relates to a charger for charging a charger using multiple controls, and more particularly, to a charging device for charging a charger by applying constant power control to a conventional constant current-constant voltage control scheme, And trickle mode to compensate the self-discharge of the battery after charging is completed, thereby solving the problem of stratification of the battery electrolytic solution, thereby solving the deterioration process of the battery to improve the life of the battery. And more particularly to an electric vehicle charger to be operated.

일반적으로 전동차량은 전해액이 수용된 축전기를 충전기로 충전시켜 사용하므로 엔진차량에 비해 소음 및 진동이 없어 산업현장에서는 생산성 증대를 기할 수 있으며, 청결한 상태로 유지할 수 있는 장점으로 점차 그 사용이 일반화되고 있다.Generally, an electric vehicle uses a capacitor filled with an electrolytic solution by charging it with a charger, so there is no noise and vibration as compared with an engine vehicle. Thus, productivity can be increased in an industrial field, and a clean state can be maintained. .

이러한 전동차량에 사용되는 충전기는 통상 교류전원전압의 변동이나 축전지의 방전상태와는 관계없이 항상 일정한 설정치로 충전하여 과충전이나 과방전에 의한 축전지의 손상 없이 축전지를 충전하는 장치로서, 입력되는 교류전압의 변동에 대응하고, 안정된 상태에서 축전지를 충전하기 위해서 정전류 - 정전압 제어방식을 채용하고 있다.A charger used in such an electric vehicle is usually charged at a predetermined constant value regardless of fluctuations of an AC power supply voltage or a discharge state of the battery to charge the battery without damaging the battery due to overcharge or overdischarge. A constant current-constant voltage control system is adopted in order to charge the battery in a stable state in response to the fluctuation.

상기 정전류 - 정전압 제어방식은 정전류 제어에서 정전압 제어로 전이하는 시점의 충전 상한 전압을 기준으로 하며, 전류가 기준 수치에 도달할 때까지 충전하는 방식이다.The constant current-constant voltage control method is based on the charge upper limit voltage at the time of transition from the constant current control to the constant voltage control, and is charged until the current reaches the reference value.

이러한 정전류 - 정전압 제어방식은 단순한 정전류 또는 정전압 방식의 단점을 해결한 것으로, 축전지의 불균등 충전을 해소하고, 대용량의 충전기를 사용할 필요가 없어 매우 효율적인 충전방식이라 할 수 있다.This constant current-constant voltage control method solves the disadvantage of a simple constant current or constant voltage method, eliminating the uneven charging of the battery and eliminating the need to use a large-capacity charger, which is a very efficient charging method.

그러나, 정전류 - 정전압 제어방식은 정전류에서 정전압으로 제어로 전환하는 시점이 축전지 전압을 기준으로 하여 정전류 지령치를 설정하여야 하므로, 축전지 내부의 전해액은 위치별로 전도도가 달라지게 되어 전지 내부의 위치별로 특성이 다른 상태로 운전되며, 이는 전지 열화의 원인이 되었다.However, since the constant current-constant voltage control method must set the constant current command value based on the battery voltage at the time of switching from the constant current to the constant voltage control, the conductivity of the electrolyte inside the battery varies depending on the position, It is operated in another state, which causes battery deterioration.

본 발명은 이러한 문제점을 해결하기 위하여 안출된 것으로서, 본 발명의 목적은 정전류 - 정전압 제어 사이의 구간에 정전력제어를 하고, 에지테이션 및 이퀄라이징 충전을 추가하여 축전기 각 셀의 전압이 균일화가 되도록, 저전류로 충전시켜 균등충전을 가능하도록 하는 다중제어 충전기를 제공하는데 있다.SUMMARY OF THE INVENTION The present invention has been conceived in order to solve such a problem, and it is an object of the present invention to provide a method of controlling a constant current and a constant voltage by controlling an electrostatic force in a section between a constant current and a constant voltage control and adding an edgeing and an equalizing charge, And to provide a multi-control charger that enables charging to be performed at a low current to enable uniform charging.

하나의 바람직한 실시 양태에 있어서 본 발명에 따른 다중제어 충전기는, 전술한 문제를 모두 해소하고, 축전기의 전해액 조성의 불균등화에 따른 전지의 열화과정을 해소하여 전지의 수명을 향상시킬 수 있다.In one preferred embodiment, the multi-control charger according to the present invention can solve the above-mentioned problems and improve the lifetime of the battery by eliminating the deterioration process of the battery due to unevenness of the electrolyte composition of the capacitor.

본 발명의 또 다른 목적 및 효과는 이하의 상세한 설명으로부터 명확하게 되고, 본 발명의 바람직한 실시예를 나타내는 상세한 설명 및 실시예는 본 발명의 범주를 제한하는 것이 아니다.Other objects and advantages of the present invention will become apparent from the detailed description given hereinafter and the detailed description and the examples that illustrate the preferred embodiments of the present invention are not intended to limit the scope of the present invention.

상술한 목적을 달성하기 위한 본 발명은, 3상의 정전류 - 정전압 제어방식으로 충전되는 전동차량 충전기의 충전방법으로서, 입력된 변압기의 1차측을 Y 또는

Figure 112006053482811-PAT00001
로 결선하여 유입된 전류를 일정하게 제어하고, 전압은 증가시키며, 축전지의 전압이 2[V/CELL]에 다다르면, 다음 단계로 전환하는 정전류제어모드수행단계와, 상기 축전지의 전압이 2[V/CELL]에 다다르면 정격전류와 정격전압의 곱으로 계산한 정격전력으로 변화시키고, 상기 충전기의 정격용량과 동일하도록 상기 축전지의 전압을 2.4[V/CELL]로 유지시키는 정전력제어모드수행단계와, 상기 유지된 축전기의 전압을 총 58V로 일정하게 유지시키고, 유입전류를 감소시키며, 상기 정전류와 정전력모드수행단계에서 유입된 전류량의 1/18이 되는 시점에서 다음 단계로 전환되는 정전압제어모드수행단계와, 상기 정전압제어모드수행단계에서 결정된 상기 정전력모드수행단계에서 유입된 전류량의 1/18이 되는 시점에서 정전류제어를 수행하여 유입되는 전류는 일정하게 하고, 축전지의 전압을 증대시켜 축전지의 최종전압을 2.83[V/CELL]로 제한시키는 에지테이션모드수행단계와, 상기 에지테이션모드수행단계에서 총 유입된 전류량의 17%가 되면 10~20분간 축전지를 충전하지 않는 스톱모드수행단계와, 상기 충전된 축전지 셀 간의 전압 불평등을 균등화시키도록 상기 에지테이션모드수행단계에서 수행된 상기 정전력모드수행단계에서 유입된 전류량의 1/18이 되는 1/2로 정전류 제어를 수행하고, 축전지 전압의 변동이 시간당 60[mV] 이하가 되면 충전이 종료되는 이퀄라이징모드수행단계를 포함하여 이루어는 충전기를 제공한다.According to another aspect of the present invention, there is provided a charging method for an electric vehicle charger charged by a three-phase constant current-constant voltage control method,
Figure 112006053482811-PAT00001
A constant current control mode in which the voltage of the battery is controlled to 2 [V / CELL] when the voltage of the battery reaches 2 [V / CELL] / CELL], the voltage of the battery is maintained at 2.4 [V / CELL] so as to be the rated power calculated by multiplying the rated current by the rated current and the rated capacity of the charger, A constant voltage control mode in which the voltage of the maintained capacitor is kept constant at a total of 58 V, the inrush current is reduced, and a transition is made from the time point when the current is equal to 1/18 of the amount of current flowing in the constant current and constant power mode, Wherein the constant current control is performed at a time point when the current is 1 / 18th of the amount of current flowing in the constant power mode mode determined in the step of performing the constant voltage control mode, And a voltage of the battery is increased to limit the final voltage of the battery to 2.83 [V / CELL]. When the amount of current is 17% of the total amount of the input current in the step of performing the agitation mode, A first mode in which the voltage is in a range of 1 / 18th of the amount of current flowing in the step of performing the constant power mode performed in the step of performing the agitation mode so as to equalize the voltage inequality between the charged battery cells, 2 and performing the equalizing mode in which the charging is terminated when the variation of the battery voltage is less than 60 [mV] per hour.

또한, 상기 이퀄라이징모드수행단계가 종료하면 축전지가 충전기에 연결된 상태인지 확인하여 12시간 마다 축전지의 방전량을 확인하여 보충하는 트리클모드수행단계를 더 포함한다.In addition, when the equalizing mode is performed, it is checked whether the battery is connected to the charger, and the trickle mode performing step is performed to check and replenish the discharge amount of the battery every 12 hours.

이하, 본 발명에 따른 하나의 바람직한 실시예를 첨부도면을 참조하여 상세히 설명한다. 먼저, 도면에 걸쳐 기능적으로 동일하거나, 유사한 부분에는 동일한 부호를 부여한다.Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings. First, functionally identical or similar portions are given the same reference numerals throughout the drawings.

도 1은 본 발명에 따른 다중제어를 수행하는 전동차량 충전기의 충전방법을 도식화한 블럭도이고, 도 2는 본 발명에 적용되는 개략적인 시스템을 보인 회로도이다.FIG. 1 is a block diagram illustrating a charging method of an electric vehicle charger for performing multiple control according to the present invention, and FIG. 2 is a circuit diagram showing a schematic system applied to the present invention.

도 1 내지 도 2를 참조하면, 본 발명에 따른 다중제어를 수행하는 전동차량 충전기는 3상의 정전류 - 정전압 제어방식으로 충전되는 전동차량 충전기의 충전방법으로 충전된 충전기로서, 여기에 정전력 제어방식을 추가하여 이루어진 충전기(10)다.Referring to FIGS. 1 and 2, an electric vehicle charger for performing multiple control according to the present invention is a charger charged by a charging method of an electric vehicle charger charged in a three-phase constant current-constant voltage control mode, To the charger (10).

먼저, 본 발명에 따른 충전기(10)는 정전류제어모드수행단계(S100)와 정전력제어모드수행단계(S200), 정전압제어모드수행단계(S300), 에지테이션모드수행단계(S400), 스톱모드수행단계(S500), 이퀄라이징모드수행단계(S600), 트릭클모드수행단계(S700)로 충전되는 특성을 갖는다.First, the charger 10 according to the present invention includes a constant current control mode performing step S100, an electrostatic power control mode performing step S200, a constant voltage control mode performing step S300, an edgeing mode performing step S400, (S500), an equalizing mode execution step (S600), and a trick mode execution step (S700).

정전류제어모드수행단계(S100)는 입력된 변압기의 1차측을 Y 또는

Figure 112006053482811-PAT00002
로 결선하여 유입된 전류를 일정하게 제어하고, 전압은 증가시키며, 축전지의 전압이 2[V/CELL]에 다다르면, 다음 단계로 전환한다.In the constant current control mode execution step S100, the primary side of the input transformer is Y or
Figure 112006053482811-PAT00002
And the voltage is increased. When the voltage of the battery reaches 2 [V / CELL], it switches to the next step.

이러한 작동은 도 2에 도시된 바와 같이, 입력전원부(20)의 구성에 의해서 수행된다. 입력전원부(20)는 3상 전원부로서 입력 변압기의 결선에 의해서 220V, 380V를 겸용으로 사용할 수 있으며, 3상 입력전원과 동기되는 신호를 제어보드(30)로 인가한다.This operation is performed by the configuration of the input power source unit 20, as shown in Fig. The input power supply unit 20 is a three-phase power supply unit, and can be used as 220 V and 380 V by connection of an input transformer. A signal synchronized with the 3-phase input power supply is applied to the control board 30.

정전력제어모드수행단계(S200)는 상기 축전지(10)의 전압이 2[V/CELL]에 다다르면 정격전류와 정격전압의 곱으로 계산한 정격전력으로 변화시키고, 상기 충전기의 정격용량과 동일하도록 상기 축전지의 전압을 2.4[V/CELL]로 유지시키는 작동을 수행한다.In the constant power control mode execution step S200, when the voltage of the battery 10 reaches 2 [V / CELL], the constant power control mode execution step S200 changes the rated power to the rated power calculated by the product of the rated current and the rated voltage, And maintains the voltage of the battery at 2.4 [V / CELL].

이러한 작동을 수행하는 정전력제어모드수행단계(S200)는 전력변환부(20)에서 이루어지고, 전력변환부(40)는 세미 컨버터로 이루어져 있으며, 스위칭 소자는 사이리스터를 사용하고, 3상으로 입력된 교류 전원을 직류 전원으로 변환시킨다.The constant power control mode performing step S200 for performing the above operation is performed in the power converting unit 20, the power converting unit 40 is made of a semi-converter, the switching device uses a thyristor, Converted AC power into DC power.

정전압제어모드수행단계(S300)는 상기 유지된 축전기의 전압을 총 58V로 일정하게 유지시키고, 유입전류를 감소시키며, 상기 정전류와 정전력모드수행단계(S100)(S200)에서 유입된 전류량의 1/18이 되는 시점에서 다음 단계로 전환시킨다.In the constant voltage control mode execution step S300, the voltage of the stored capacitor is maintained at a total of 58V, the inrush current is reduced, and the constant current and the constant power mode are performed in step S100 (S200) / 18 to the next step.

에지테이션모드수행단계(S400)는 상기 정전압제어모드수행단계(S300)에서 결정된 상기 정전력모드수행단계(S200)에서 유입된 전류량의 1/18이 되는 시점에서 정전류제어를 수행하여 유입되는 전류는 일정하게 하고, 축전지의 전압을 증대시켜 축전지의 최종전압을 2.83[V/CELL]로 제한시킨다.In the step of performing the edge mode (S400), the constant current control is performed at a time point when the current is 1 / 18th of the amount of current flowing in the constant power mode execution step (S200) determined in the constant voltage control mode execution step (S300) And the voltage of the battery is increased to limit the final voltage of the battery to 2.83 [V / CELL].

스톱모드수행단계(S500)는 상기 에지테이션모드수행단계(S400)에서 총 유입된 전류량의 17%가 되면 10~20분간 축전지를 충전하지 않는 작동을 수행한다.The stop mode performing step S500 performs an operation of not charging the battery for 10 to 20 minutes when the amount of current is 17% of the total amount of the input current in the step of performing the edgeing mode (S400).

이퀄라이징모드수행단계(S600)는 상기 충전된 축전지 셀 간의 전압 불평등을 균등화시키도록 상기 에지테이션모드수행단계(S400)에서 수행된 상기 정전력모드수행단계(S200)에서 유입된 전류량의 1/18이 되는 1/2로 정전류 제어를 수행하고, 축 전지 전압의 변동이 시간당 60[mV] 이하가 되면 충전이 종료된다.The step of performing the equalizing mode S600 may include the step of performing the constant power mode operation S200 performed in the step of performing the edgeing mode so as to equalize the voltage inequality between the charged battery cells, And the charging is terminated when the variation of the battery cell voltage becomes 60 [mV] or less per hour.

트릭클모드수행단계(S700)는 상기 이퀄라이징모드수행단계(S600)가 종료하면 축전지가 충전기(10)에 연결된 상태인지 확인하여 12시간 마다 축전지의 방전량을 확인하여 보충하는 역할을 수행한다.The trickle mode execution step S700 checks whether the battery is connected to the charger 10 when the equalizing mode execution step S600 is completed and checks the amount of the battery discharged every 12 hours to supplement the battery.

위와 같은 정전압제어모드수행단계(S300), 에지테이션모드수행단계(S400), 스톱모드수행단계(S500), 이퀄라이징모드수행단계(S600), 트릭클모드수행단계(S700)는 제어보드(30)에 의해서 제어되며, 제어보드(30)는 축전지의 전압과 유입전류에 따라 각 제어모드를 결정하며, 상기 3상 입력전원과 동기되어 발생하는 외부 인터럽트를 기준으로 3상의 점호각을 계산하여 상기 전력변환부(20)의 스위칭 소자인 사이리스터를 트리거시킨다.The control board 30 performs the constant voltage control mode execution step S300, the edge mode execution step S400, the stop mode execution step S500, the equalizing mode execution step S600, and the trick mode execution step S700, And the control board 30 determines each control mode according to the voltage of the battery and the input current. The control board 30 calculates the three phase phase angle based on the external interrupt generated in synchronization with the three phase input power, And triggers a thyristor which is a switching element of the converting unit 20. [

위와 같은 역할을 수행하는 제어보드(30)는 집적화시킨 반도체 콘트롤러가 적용하여 디지탈화되어 있으며, A/D 컨버터, 타이머 등을 포함하고 있다.The control board 30, which performs the above-described functions, is digitized by the integrated semiconductor controller, and includes an A / D converter, a timer, and the like.

다시, 제어보드(30)의 제어에 따라 충전기(10)는 축전지가 연결됨으로서 축전지의 전원으로 제어보드(30) 및 충전기가 구동되어 충전을 시작하게 되며, 축전기를 충전기(10)로부터 분리하면 충전기 및 제어보드(30)의 모든 전원은 오프되어 충전기의 전원손실을 최소화한다.The control board 30 and the charger are driven to start charging by the power of the battery as the battery is connected to the charger 10 under the control of the control board 30. When the capacitor is detached from the charger 10, And the control board 30 are turned off to minimize the power loss of the charger.

또한, 제어보드(30)는 축전지의 전압과 유입전류의 크기가 제한 범위를 넘어설 경우엔 하드웨어적으로 모든 게이트 신호를 오프시킴으로서 과전압, 과전류로보터 전체적인 시스템을 보호하는 기능과 축전지 유입전류의 검출로 상기 사이리스터 고정을 진단하는 기능을 수행한다.In addition, when the voltage of the battery and the magnitude of the inrush current exceed the limit range, the control board 30 functions to protect the entire system of overvoltage and overcurrent by protecting all the gate signals by hardware, Thereby diagnosing the thyristor fixing.

즉, 전기 설명으로부터 명확해지듯이, 이 발명은 충전기의 이용률 향상과 축전지 전해액의 성층화 문제를 보완하는 다중제어방식 제공하여 충전기(10)의 신뢰성과 이용의 효율성을 증대를 도모할 수 있다.That is, as apparent from the foregoing description, the present invention can improve the reliability and utilization efficiency of the charger 10 by providing a multi-control method for improving the utilization rate of the charger and stratifying the battery electrolyte.

본 발명은 그 정신 또는 주요한 특징으로부터 일탈하는 일없이, 다른 여러 가지 형태로 실시할 수 있다. 그 때문에, 전술한 실시예는 모든 점에서 단순한 예시에 지나지 않으며, 한정적으로 해석해서는 안된다. 본 발명의 범위는 특허청구의 범위에 의해서 나타내는 것으로써, 명세서 본문에 의해서는 아무런 구속도 되지 않는다. 다시, 특허청구범위의 균등 범위에 속하는 변형이나 변경은, 모두 본 발명의 범위 내의 것이다.The present invention may be embodied in many other forms without departing from the spirit or essential characteristics thereof. Therefore, the above-described embodiments are merely examples in all respects, and should not be construed restrictively. The scope of the present invention is indicated by the appended claims, and the present invention is not restricted by the specification. Modifications and variations falling within the scope of the appended claims all fall within the scope of the present invention.

이상에서 상세히 설명한 바와 같이, 본 발명에 따른 다중제어를 수행하는 전동차량 충전기는 정전류 - 정전압 제어 사이의 구간에 정전력제어를 하고, 에지테이션 및 이퀄라이징 충전을 추가하여 축전기 각 셀의 전압이 균일화가 되도록, 저전류로 충전시켜 균등충전을 가능하도록 하여 축전기의 전해액 조성의 불균등화에 따른 전지의 열화과정을 해소하여 전지의 수명을 향상시킬 수 있다.As described in detail above, the electric vehicle charger for performing the multiple control according to the present invention performs constant electric power control during the interval between the constant current and the constant voltage control, and adds the agitation and the equalizing charge so that the voltage of each cell of the capacitor becomes equal So that the battery can be charged uniformly at a low current so that the deterioration of the battery due to the unevenness of the electrolyte composition of the capacitor can be eliminated and the life of the battery can be improved.

Claims (2)

3상의 정전류 - 정전압 제어방식으로 충전되는 전동차량 충전기으로서, 입력된 변압기의 1차측을 Y 또는
Figure 112006053482811-PAT00003
로 결선하여 유입된 전류를 일정하게 제어하고, 전압은 증가시키며, 축전지의 전압이 2[V/CELL]에 다다르면, 다음 단계로 전환하는 정전류제어모드수행단계와, 상기 축전지의 전압이 2[V/CELL]에 다다르면 정격전류와 정격전압의 곱으로 계산한 정격전력으로 변화시키고, 상기 충전기의 정격용량과 동일하도록 상기 축전지의 전압을 2.4[V/CELL]로 유지시키는 정전력제어모드수행단계와, 상기 유지된 축전기의 전압을 총 58V로 일정하게 유지시키고, 유입전류를 감소시키며, 상기 정전류와 정전력모드수행단계에서 유입된 전류량의 1/18이 되는 시점에서 다음 단계로 전환되는 정전압제어모드수행단계와, 상기 정전압제어모드수행단계에서 결정된 상기 정전력모드수행단계에서 유입된 전류량의 1/18이 되는 시점에서 정전류제어를 수행하여 유입되는 전류는 일정하게 하고, 축전지의 전압을 증대시켜 축전지의 최종전압을 2.83[V/CELL]로 제한시키는 에지테이션모드수행단계와, 상기 에지테이션모드수행단계에서 총 유입된 전류량의 17%가 되면 10~20분간 축전지를 충전하지 않는 스톱모드수행단계와, 상기 충전된 축전지 셀 간의 전압 불평등을 균등화시키도록 상기 에지테이션모드수행단계에서 수행된 상기 정전력모드수행단계에서 유입된 전류량의 1/18이 되는 1/2로 정전류 제어를 수행하고, 축전지 전압의 변동이 시간당 60[mV] 이하가 되면 충전이 종료되는 이퀄라이징모드수행단 계를 수행하여 상기 충전기에 충전시키는 것을 특징으로 하는 다중제어를 수행하는 전동차량 충전기.An electric vehicle charger charged with a three-phase constant current-constant voltage control system, wherein the primary side of the input transformer is Y or
Figure 112006053482811-PAT00003
A constant current control mode in which the voltage of the battery is controlled to 2 [V / CELL] when the voltage of the battery reaches 2 [V / CELL] / CELL], the voltage of the battery is maintained at 2.4 [V / CELL] so as to be the rated power calculated by multiplying the rated current by the rated current and the rated capacity of the charger, A constant voltage control mode in which the voltage of the maintained capacitor is kept constant at a total of 58 V, the inrush current is reduced, and a transition is made from the time point when the current is equal to 1/18 of the amount of current flowing in the constant current and constant power mode, Wherein the constant current control is performed at a time point when the current is 1 / 18th of the amount of current flowing in the constant power mode mode determined in the step of performing the constant voltage control mode, And a voltage of the battery is increased to limit the final voltage of the battery to 2.83 [V / CELL]. When the amount of current is 17% of the total amount of the input current in the step of performing the agitation mode, A first mode in which the voltage is in a range of 1 / 18th of the amount of current flowing in the step of performing the constant power mode performed in the step of performing the agitation mode so as to equalize the voltage inequality between the charged battery cells, 2. The electric vehicle charger as claimed in claim 1, wherein the step of performing the equalizing mode in which the charging is terminated when the variation of the battery voltage is less than 60 [mV] . 제 1항에 있어서, The method according to claim 1, 상기 이퀄라이징모드수행단계가 종료하면 축전지가 충전기에 연결된 상태인지 확인하여 12시간 마다 축전지의 방전량을 확인하여 보충하는 트리클모드수행단계를 더 포함하여 이루어지는 것을 특징으로 하는 다중제어를 수행하는 전동차량 충전기.And a trickle mode performing step of checking whether the battery is connected to the charger when the step of performing the equalizing mode is completed and confirming and replenishing the discharge amount of the battery every 12 hours. .
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