KR20080053713A - Circuit for equalization of battery charge state - Google Patents

Circuit for equalization of battery charge state Download PDF

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KR20080053713A
KR20080053713A KR1020060125605A KR20060125605A KR20080053713A KR 20080053713 A KR20080053713 A KR 20080053713A KR 1020060125605 A KR1020060125605 A KR 1020060125605A KR 20060125605 A KR20060125605 A KR 20060125605A KR 20080053713 A KR20080053713 A KR 20080053713A
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South Korea
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switch
charge
battery
circuit
cell
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KR1020060125605A
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Korean (ko)
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KR100867803B1 (en
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타케시 야마다
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현대자동차주식회사
기아자동차주식회사
현대자동차일본기술연구소
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    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0014—Circuits for equalisation of charge between batteries
    • H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
    • 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]
    • 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 circuit for equalization of a battery charge state is provided to reduce a cost without requiring a transformer included in an existing charge equalization circuit device and suppress EMI(ElectroMagnetic Interference) and noise. A circuit for equalization of a battery charge state includes a battery(10), Photo-Mos switches(20), a charge line(50), a discharge line(60), and a current limiting circuit(30). The battery includes a plurality of cells(40). The photo-MOS switches are mounted on each of the cells by two. The charge line is connected to one of the two photo-MOS switched mounted on each of the cells. The discharge line is connected to the other photo-MOS switched mounted on each of the cells. The current limiting circuit discharges a current from the cell with the highest SOC(State Of Charge) among the cells and sequentially charges the current to the cell with the lowest SOC by being connected to the charge and discharge lines.

Description

조전지의 충전 균등화 회로 장치{Circuit for equalization of battery charge state}Circuit for equalization of battery charge state

도 1은 본 발명에 따른 조전지의 충전 균등화 회로를 나타내는 회로도,1 is a circuit diagram showing a charge equalization circuit of an assembled battery according to the present invention;

도 2는 본 발명에 따른 조전지의 충전 균등화 회로의 병렬접속시 전류 흐름을 나타내는 회로도,2 is a circuit diagram showing the current flow in parallel connection of the charge equalization circuit of the assembled battery according to the present invention;

도 3은 본 발명에 따른 조전지의 충전 균등화 회로의 직렬접속시 전류 흐름을 나타내는 회로도.Figure 3 is a circuit diagram showing the current flow in series connection of the charge equalization circuit of the assembled battery according to the present invention.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

10 : 배터리 20 : 포토-모스 스위치10 battery 20 photo-MOS switch

30 : 전류제한회로 40 : 셀30: current limit circuit 40: cell

50 : 충전라인 60 : 방전라인50: charge line 60: discharge line

C1 : 제1캐패시터 C2 : 제2캐패시터C1: first capacitor C2: second capacitor

R : 저항 SW1 : 제1스위치R: resistance SW1: first switch

SW2 : 제2스위치 SW3 : 제3스위치SW2: second switch SW3: third switch

SW4 : 제4스위치 SW5 : 제5스위치SW4: fourth switch SW5: fifth switch

본 발명은 조전지의 충전 균등화 회로 장치에 관한 것으로서, 더욱 상세하게는 기존의 변압기를 사용하지 않고, 스위치, 전류제한회로, 콘덴서 등을 조합하여 하이브리드 전기 차량의 배터리인 조전지에 대한 충전 균등화를 실현함과 함께 비용 절감, EMI 및 노이즈 억제 등을 효과를 얻을 수 있도록 한 조전지의 충전 균등화 회로 장치에 관한 것이다.The present invention relates to a charge equalization circuit device of a battery pack, and more particularly, to equalize the charge of a battery pack of a hybrid electric vehicle by combining a switch, a current limiting circuit, a capacitor, and the like without using a conventional transformer. The present invention relates to a charge equalization circuit device of an assembled battery capable of achieving cost reduction, EMI, and noise suppression.

일반적으로 자동차용 배터리 관리 시스템(BMS : Battery Management System)은 하이브리드 전기 자동차의 구동장치인 모터의 동력원으로 사용되는 배터리의 수명을 더 연장하고 전동기의 성능과 효율을 개선하기 위해 배터리의 SOC(State Of Charge) 상태를 모니터링 및 제어하는 시스템을 의미한다.In general, a battery management system (BMS) for automobiles is used in order to extend the life of the battery used as a power source of the motor that drives the hybrid electric vehicle and to improve the performance and efficiency of the motor. Charge) means a system that monitors and controls the status.

상기 조전지는 단전지에 비해 전지를 전력원으로 하는 기기에서 실제 사용가능한 상태로 만들어진 배터리 팩(Battery Pack)이라고도 하며, 하이브리드 전기 차량 또는 순수 전기 차량에 적용된다.The assembled battery is also referred to as a battery pack (Battery Pack) made in a practically usable state in a device using a battery as a power source compared to a single cell, and is applied to a hybrid electric vehicle or a pure electric vehicle.

종래의 조전지 충전 균등화 회로 장치는 변압기와 스위치를 사용함에 따라, 신속하게 충전 균등화를 수행할 수 있지만, 각 셀마다 변압기를 장착될 필요가 있어 중량 및 비용 모두 증가되는 문제점 있었다.The conventional battery charge equalization circuit device can perform charge equalization quickly by using a transformer and a switch, but it is necessary to install a transformer for each cell, thereby increasing both weight and cost.

예를 들어, 충전 균등화를 가능하게 하는 회로구성이 일본특허공개2002-223528에서 개시되어 있는 바, 이는 변압기와 스위치를 조합한 방법으로서, 스위칭 으로 인해 변압기로 승압 또는 강압되어 신속한 충전을 가능하게 하나, 전지의 모든 셀에 변압기를 장착해야 하며, 고주파 EMI 대책이 필수이기 때문에 비용이 증가되는 문제점이 있었다.For example, a circuit configuration that enables charge equalization is disclosed in Japanese Patent Laid-Open No. 2002-223528, which is a combination of a transformer and a switch, which is boosted or stepped down by a transformer to enable rapid charging. In addition, transformers must be installed in all cells of the battery, and a high frequency EMI countermeasure is required, thereby increasing costs.

또한, 종래의 조전지 충전 균등화 회로 장치는 고속 스위칭을 할 필요가 있기 때문에, 전자파(EMI)를 발생시키는 노이즈(Noise)원이 되며, 기타 제어기기의 오동작 원인이 될 수 있다.In addition, since the conventional battery charge equalization circuit device needs to perform high-speed switching, it is a source of noise generating electromagnetic waves (EMI), and may cause malfunction of other controllers.

이를 억제 하기 위하여, 새로운 부품이 또한 필요하게 되지만, 이는 비용 증가로 이어지는 단점을 유발시킨다.To suppress this, new parts are also needed, but this leads to disadvantages leading to increased costs.

본 발명은 상기와 같은 점을 감안하여 안출한 것으로서, 기존의 충전 균등화 회로 장치에 포함된 변압기를 사용하지 않고, 스위치, 전류제한회로, 콘덴서 등을 조합하여 하이브리드 전기 차량의 배터리인 조전지에 대한 충전 균등화를 실현함과 함께 비용 절감 및 EMI 억제, 노이즈 억제 등을 효과를 얻을 수 있도록 한 조전지의 충전 균등화 회로 장치를 제공하는데 그 목적이 있다.The present invention has been made in view of the above, and does not use a transformer included in a conventional charging equalization circuit device, but combines a switch, a current limiting circuit, a capacitor, and the like for a battery pack of a hybrid electric vehicle. It is an object of the present invention to provide a charge equalization circuit device for an assembled battery that realizes charge equalization, and can reduce costs, suppress EMI, and suppress noise.

상기한 목적을 달성하기 위한 본 발명은: 여러개의 셀이 배열된 배터리와; 상기 각 셀에 2개씩 장착된 포토-모스 스위치(Photo-MosSW)와; 상기 각 셀에 2개씩 장착된 포토-모스 스위치중 하나에 연결된 충전라인과; 상기 각 셀에 2개씩 장 착된 포토-모스 스위치중 다른 하나에 연결된 방전라인과; 상기 충전 및 방전라인에 연결되어, 배터리 셀중 SOC가 가장 높은 셀로부터 전류를 방전시키고, 가장 낮은 셀에 전류를 충전시키는 전류제한회로로 구성된 것을 특징으로 하는 조전지의 충전 균등화 회로 장치를 제공한다.The present invention for achieving the above object is a battery comprising a plurality of cells arranged; Two photo-MosSW switches mounted on each of the cells; A charging line connected to one of the photo-MOS switches mounted in each of the two cells; A discharge line connected to another one of the photo-MOS switches mounted in each of the two cells; It is connected to the charge and discharge lines, the charge equalization circuit device of the assembled battery, characterized in that composed of a current limiting circuit for discharging the current from the cell with the highest SOC of the battery cells, and charges the current in the lowest cell.

바람직한 구현예로서, 상기 전류제한회로는 배터리 셀중 SOC가 가장 높은 셀로부터 전류를 방전시키는 병렬회로와, 가장 낮은 셀에 전류를 충전시키는 직렬회로로 구성된 것을 특징으로 한다.In a preferred embodiment, the current limiting circuit is characterized by consisting of a parallel circuit for discharging the current from the cell with the highest SOC of the battery cells, and a series circuit for charging the current in the lowest cell.

상기 병렬회로는 저항과, 방전라인과 연결된 제1스위치와, 상기 저항과 제1스위치간에 연결된 제1캐패시터와, 상기 저항과 연결된 제2스위치와, 상기 제1스위치와 연결된 제4스위치와, 상기 제2 및 제4스위치간에 연결된 제2캐패시터로 구성된 것을 특징으로 한다.The parallel circuit includes a resistor, a first switch connected to a discharge line, a first capacitor connected between the resistor and the first switch, a second switch connected to the resistor, a fourth switch connected to the first switch, And a second capacitor connected between the second and fourth switches.

상기 직렬회로는 전류의 충전 흐름 방향을 따라 충전라인과 연결된 제5스위치와, 포토-모스 스위치와 연결된 저항과, 상기 제5스위치와 저항간에 연결된 제1 및 제2캐패시터와, 제1 및 제2캐패시터 사이에 연결된 제3스위치로 구성된 것을 특징으로 한다.The series circuit includes a fifth switch connected to a charging line along a charging flow direction of a current, a resistor connected to a photo-MOS switch, first and second capacitors connected between the fifth switch and a resistor, and first and second electrodes. It is characterized by consisting of a third switch connected between the capacitor.

이하, 본 발명의 바람직한 실시예를 첨부도면을 참조로 상세하게 설명하기로 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

첨부한 도 1은 본 발명에 따른 조전지의 충전 균등화를 위한 회로도를 나타낸다.1 shows a circuit diagram for charge equalization of a battery pack according to the present invention.

본 발명에 따른 충전 균등화를 위한 회로 구성은, 배터리(10), 포토-모스 스 위치(20), 한 쌍의 캐패시터(C1,C2), 충전 및 방전을 위한 전류제한회로(30) 등으로 구성된다.The circuit configuration for equalization of charge according to the present invention includes a battery 10, a photo-MOS switch 20, a pair of capacitors C1 and C2, a current limiting circuit 30 for charging and discharging, and the like. do.

배터리(10)의 각 셀(40)에는 충전 및 방전을 위한 스위치로서, 2개씩의 포토-모스 스위치(20: photo-MosSW)가 연결되어, 배터리(10)의 충전 또는 방전이 이루어질 수 있는 상태가 된다.Each cell 40 of the battery 10 is a switch for charging and discharging, and two photo-MosSW switches 20 are connected to each other so that the battery 10 may be charged or discharged. Becomes

상기 각 포토-모스 스위치(20)에는 충전라인(50) 및 방전라인(60)이 연결되어 있으며, 이 충전 및 방전라인(50,60)에는 2개의 캐패시터(C1,C2)와 1개의 저항(R), 그리고 5개의 스위치(SW1,SW2,SW3,SW4,SW5)가 조합된 전류제한회로(30)가 연결된다.Each photo-MOS switch 20 is connected to a charge line 50 and a discharge line 60, and two capacitors C1 and C2 and one resistor (C) are connected to the charge and discharge lines 50 and 60. R and a current limiting circuit 30 in which five switches SW1, SW2, SW3, SW4, and SW5 are combined.

상기 전류제한회로(30)는 배터리(10)의 각 셀(40)로 방전되는 전류를 방전시킬 수 있는 병렬회로와, 배터리(10)의 각 셀(40)로 충전을 위한 전류를 공급하는 직렬회로로 구성된다.The current limiting circuit 30 is a parallel circuit capable of discharging the current discharged to each cell 40 of the battery 10, and a series for supplying current for charging to each cell 40 of the battery 10. It consists of a circuit.

보다 상세하게는, 상기 배터리 방전을 위한 병렬회로는 3개의 스위치(SW1,SW2,SW4)와, 2개의 캐패시터(C1,C2)와, 저항(R)으로 구성되는 바, 상기 저항(R)과 제1캐패시터(C1)가 연결되고, 이 제1캐패시터(C1)와 제1스위치(SW1)가 연결되며, 제1스위치(SW1)는 방전라인(60)과 연결된다.More specifically, the parallel circuit for discharging the battery is composed of three switches (SW1, SW2, SW4), two capacitors (C1, C2), and a resistor (R), the resistor (R) and The first capacitor C1 is connected, the first capacitor C1 and the first switch SW1 are connected, and the first switch SW1 is connected to the discharge line 60.

또한, 상기 저항(R)과 제2스위치(SW2)가 연결되고, 이 제2스위치(SW2)와 제2캐패시터(C2)가 연결되며, 상기 제2캐패시터(C2)와 제1스위치(SW1)가 제4스위치(SW4)에 의하여 연결되는 회로 구성을 갖는다.In addition, the resistor R and the second switch SW2 are connected, the second switch SW2 and the second capacitor C2 are connected, and the second capacitor C2 and the first switch SW1 are connected to each other. Has a circuit configuration connected by the fourth switch SW4.

반면에, 상기 배터리 충전을 위한 직렬회로는 2개의 스위치(SW3,SW5)와, 2개 의 캐패시터(C1,C2)와, 저항(R)으로 구성되는 바, 전류의 충전 흐름 방향을 따라 충전라인(50)과 제5스위치(SW5)가 연결되고, 제5스위치(SW5)와 제2캐패시터(C2)가 연결되며, 제2캐패시터(C2) 및 제1캐패시터(C1)가 제3스위치(SW3)에 의하여 연결되고, 제1캐패시터(C1)와 각 포토-모스 스위치(20)간에 저항(R)이 연결된다.On the other hand, the series circuit for charging the battery is composed of two switches (SW3, SW5), two capacitors (C1, C2), and a resistor (R), charging line along the direction of charge flow of current 50 and the fifth switch SW5 are connected, the fifth switch SW5 and the second capacitor C2 are connected, and the second capacitor C2 and the first capacitor C1 are connected to the third switch SW3. ) Is connected, and a resistor R is connected between the first capacitor C1 and each photo-MOS switch 20.

여기서, 상기 병렬회로로 이루어진 배터리 방전회로의 동작을 설명하면 다음과 같다.Here, the operation of the battery discharge circuit consisting of the parallel circuit is as follows.

우선, 배터리의 충전상태(SOC: State Of Charge)를 모니터링 및 제어하는 배터리 관리 시스템(BCM)에서 배터리 셀중 SOC가 가장 높은 셀부(이하, Cell-max 라 칭함)와 가장 낮은 셀부(이하, Cell-min 이라 칭함)을 검출하여, 하기와 같은 흐름에 따라 충전 균등화를 수행한다.First, in the battery management system (BCM) that monitors and controls the state of charge (SOC) of the battery, the highest cell portion (hereinafter referred to as Cell-max) and the lowest cell portion (hereinafter, Cell-max) of the battery cells are the min), and charge equalization is performed according to the following flow.

배터리(10)의 셀(40)중 Cell-max와 제1 및 제2캐패시터(C1,C2)를 접속시켜 각 캐패시터(C1,C2)로 전류를 방전시킨다.Cell-max and the first and second capacitors C1 and C2 in the cell 40 of the battery 10 are connected to discharge current to each capacitor C1 and C2.

이때, 제1,2,4스위치(SW1, SW2, SW4)를 온 시키고, 제3,5스위치(SW3, SW5)를 오프시킨다.At this time, the first, second and fourth switches SW1, SW2 and SW4 are turned on, and the third and fifth switches SW3 and SW5 are turned off.

상기 제1 및 제2캐패시터(C1,C2)는 Cell-max에 대해 병렬로 접속되는 상태이다.The first and second capacitors C1 and C2 are connected in parallel with respect to Cell-max.

따라서, 상기 Cell-max로부터 방전되는 전류가 저항(R)을 지나 제1캐패시터(C1)로 방전되고, 동시에 저항(R) 및 제2스위치(SW2)를 지나 제2캐패시터(C2)로 방전된다.Accordingly, the current discharged from the Cell-max is discharged through the resistor R to the first capacitor C1 and simultaneously discharged through the resistor R and the second switch SW2 to the second capacitor C2. .

상기 저항(R)은 스위치, 배터리 등의 용량에 따라 결정되고, 수시 전류제한 을 하여 안전성을 확보하면서 저역통과필터(LPF: Low Pass Filter) 역할도 하기 때문에 전자파(EMI) 노이즈에 대한 차단 효과를 얻을 수 있다.The resistance (R) is determined according to the capacity of a switch, a battery, and the like, and acts as a low pass filter (LPF) while ensuring safety by limiting current at any time, thereby preventing the effect of EMI. You can get it.

이에 따라, 상기 제1 및 제2캐패시터(C1,C2)와 상기 배터리(10)의 셀(40)중 Cell-min간의 전위차, 저항(R)에 의하여 방전 전류(i)가 결정되며, 캐패시터(C1,C2)에 쌓인 전하는 Q=(Q1+Q2)이고, 캐패시터의 전압(Vd)은 Vd≒Cell-max 이 된다.Accordingly, the discharge current i is determined by the potential difference between the first and second capacitors C1 and C2 and Cell-min of the cell 40 of the battery 10 and the resistance R, and the capacitor ( The charge accumulated on C1 and C2 is Q = (Q1 + Q2), and the voltage Vd of the capacitor is Vd ≒ Cell-max.

여기서, 상기 직렬회로로 이루어진 배터리 충전회로의 동작을 설명하면 다음과 같다.Here, the operation of the battery charging circuit composed of the series circuit is as follows.

배터리(10)의 셀(40)중 Cell-max와 제1 및 제2캐패시터(C1,C2)를 단락시키고자, 제3 및 제5스위치(SW3, SW5)를 온시키는 동시에 제1,2,4스위치(SW1,SW2,SW4)를 오프시킨다.In order to short-circuit Cell-max and the first and second capacitors C1 and C2 in the cell 40 of the battery 10, the third and fifth switches SW3 and SW5 are turned on and the first and second 4 Turn off the switches (SW1, SW2, SW4).

따라서, 상기 충전라인(50)과 연결된 제5스위치(SW5)와, 제2캐패시터(C2)와, 제3스위치(SW3)와, 제1캐패시터(C1)와, 저항(R)이 직렬로 접속되는 상태가 되며, 이에 상기 Cell-min에 제1 및 제2캐패시터(C1,C2)가 접속되는 상태가 된다.Therefore, the fifth switch SW5, the second capacitor C2, the third switch SW3, the first capacitor C1, and the resistor R connected to the charging line 50 are connected in series. In this state, first and second capacitors C1 and C2 are connected to the cell-min.

이때, 충전을 위한 전류는 아래와 같이 결정된다.At this time, the current for charging is determined as follows.

제1 및 제2캐패시터의 접속 방법을 직렬로 변경함으로써, 상기 캐패시터(C1,C2)의 승압된 전압 Vc=2×V(Cell-max)와 상기 Cell-min의 전압 V=V(Cell-min)간의 전위차와, 전류제한을 위한 저항(R)을 기반으로, 옴(Ω)의 법칙에 의하여 충전전류가 아래 식과 같이 결정된다.By changing the connection method of the first and second capacitors in series, the boosted voltage Vc = 2 × V (Cell-max) of the capacitors C1 and C2 and the voltage V = V of the Cell-min (Cell-min Based on the potential difference between and) and the resistance (R) for current limiting, the charging current is determined by the law of Ohm (Ω) as shown below.

I={2×V(Cell-max)-V(Cell-min)}/RI = {2 × V (Cell-max) -V (Cell-min)} / R

이와 같이, Cell-max의 방전 및 Cell-min의 충전이 한 번 종료되면, 다시 Cell-max의 방전 동작을 수행한다.As such, when the discharge of the Cell-max and the charging of the Cell-min are finished once, the discharge operation of the Cell-max is performed again.

이때, 2×V(캐패시터) ≒V(Cell-min)이 된다.At this time, it becomes 2xV (capacitor) _V (Cell-min).

이러한 공정을 반복해서 수행함으로써, 배터리 셀 전체의 SOC 불균등을 억제함과 더불어 충전 균등화를 실현할 수 있다.By repeatedly performing such a process, it is possible to suppress the SOC unevenness of the entire battery cell and to realize charge equalization.

이상에서 본 바와 같이, 본 발명에 따른 조전지의 충전 균등화 회로 장치에 의하면, 기존의 충전 균등화 회로 장치에 포함된 변압기를 사용하지 않고, 스위치, 전류제한회로, 콘덴서 등을 조합하여 하이브리드 전기 차량의 배터리인 조전지에 대한 충전 균등화를 실현함과 함께 비용 절감 및 EMI 억제, 노이즈 억제 등을 효과를 얻을 수 있다.As described above, according to the charging equalization circuit device of the assembled battery according to the present invention, a hybrid electric vehicle is combined with a switch, a current limiting circuit, a capacitor, and the like without using a transformer included in the existing charging equalization circuit device. Achieve charge equalization for battery packs, cost reduction, EMI suppression and noise suppression.

Claims (4)

여러개의 셀이 배열된 배터리와;A battery in which several cells are arranged; 상기 각 셀에 2개씩 장착된 포토-모스 스위치(Photo-MosSW)와;Two photo-MosSW switches mounted on each of the cells; 상기 각 셀에 2개씩 장착된 포토-모스 스위치중 하나에 연결된 충전라인과;A charging line connected to one of the photo-MOS switches mounted in each of the two cells; 상기 각 셀에 2개씩 장착된 포토-모스 스위치중 다른 하나에 연결된 방전라인과;A discharge line connected to the other one of the photo-MOS switches mounted in each of the two cells; 상기 충전 및 방전라인에 연결되어, 배터리 셀중 SOC가 가장 높은 셀로부터 전류를 방전시키고, 가장 낮은 셀에 전류를 충전시키는 전류제한회로;A current limiting circuit connected to the charging and discharging lines to discharge current from a cell having the highest SOC and to charge the lowest cell; 를 포함하여 구성된 것을 특징으로 하는 조전지의 충전 균등화 회로 장치.Charge equalization circuit device of a battery pack, characterized in that configured to include. 청구항 1에 있어서, 상기 전류제한회로는 배터리 셀중 SOC가 가장 높은 셀로부터 전류를 방전시키는 병렬회로와, 가장 낮은 셀에 전류를 충전시키는 직렬회로로 구성된 것을 특징으로 하는 조전지의 충전 균등화 회로 장치.The apparatus of claim 1, wherein the current limiting circuit comprises a parallel circuit for discharging current from a cell having the highest SOC and a series circuit for charging a current in the lowest cell. 청구항 2에 있어서, 상기 병렬회로는 저항과, 방전라인과 연결된 제1스위치와, 상기 저항과 제1스위치간에 연결된 제1캐패시터와, 상기 저항과 연결된 제2스위치와, 상기 제1스위치와 연결된 제4스위치와, 상기 제2 및 제4스위치간에 연결된 제2캐패시터로 구성된 것을 특징으로 하는 조전지의 충전 균등화 회로 장치.The method of claim 2, wherein the parallel circuit comprises a resistor, a first switch connected to a discharge line, a first capacitor connected between the resistor and the first switch, a second switch connected to the resistor, and a first switch connected to the first switch. 4. The charge equalization circuit device of a battery pack, comprising: a switch; and a second capacitor connected between the second and fourth switches. 청구항 2에 있어서, 상기 직렬회로는 전류의 충전 흐름 방향을 따라 충전라인과 연결된 제5스위치와, 포토-모스 스위치와 연결된 저항과, 상기 제5스위치와 저항간에 연결된 제1 및 제2캐패시터와, 제 및 제2캐패시터 사이에 연결된 제3스위치로 구성된 것을 특징으로 하는 조전지의 충전 균등화 회로 장치.The method of claim 2, wherein the series circuit comprises: a fifth switch connected to a charging line along a charging flow direction of a current, a resistor connected to a photo-MOS switch, first and second capacitors connected between the fifth switch and a resistor; The charge equalizing circuit device of a battery pack, characterized in that consisting of a third switch connected between the first and second capacitors.
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Cited By (7)

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WO2011113280A1 (en) * 2010-03-17 2011-09-22 北汽福田汽车股份有限公司 Equalizing charge device and equalizing charge method
KR101222296B1 (en) * 2011-02-10 2013-01-16 삼성에스디아이 주식회사 System for charging-discharging device of secondary battery
KR101246145B1 (en) * 2011-02-22 2013-04-05 킴스테크날리지 주식회사 Voltage Equalization Circuit of Electric Energy Storage Device
WO2015156648A1 (en) * 2014-04-11 2015-10-15 주식회사 아이티엠반도체 Active cell balancing circuit using cell voltage measurement circuit of capacitor charging method
KR101579647B1 (en) * 2013-07-04 2015-12-23 주식회사 엘지화학 Battery equilibration apparatus and method that using motor and generator
US9444118B2 (en) 2011-05-26 2016-09-13 Samsung Sdi Co., Ltd. Battery pack
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WO2011113280A1 (en) * 2010-03-17 2011-09-22 北汽福田汽车股份有限公司 Equalizing charge device and equalizing charge method
KR101222296B1 (en) * 2011-02-10 2013-01-16 삼성에스디아이 주식회사 System for charging-discharging device of secondary battery
KR101246145B1 (en) * 2011-02-22 2013-04-05 킴스테크날리지 주식회사 Voltage Equalization Circuit of Electric Energy Storage Device
US9444118B2 (en) 2011-05-26 2016-09-13 Samsung Sdi Co., Ltd. Battery pack
KR101579647B1 (en) * 2013-07-04 2015-12-23 주식회사 엘지화학 Battery equilibration apparatus and method that using motor and generator
WO2015156648A1 (en) * 2014-04-11 2015-10-15 주식회사 아이티엠반도체 Active cell balancing circuit using cell voltage measurement circuit of capacitor charging method
KR101725158B1 (en) * 2015-12-16 2017-04-10 현대오트론 주식회사 Battery cell balancing apparatus

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