KR101419556B1 - Battery pack for self temperature control electromobile using thermoelectric effect - Google Patents

Battery pack for self temperature control electromobile using thermoelectric effect Download PDF

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KR101419556B1
KR101419556B1 KR1020090017652A KR20090017652A KR101419556B1 KR 101419556 B1 KR101419556 B1 KR 101419556B1 KR 1020090017652 A KR1020090017652 A KR 1020090017652A KR 20090017652 A KR20090017652 A KR 20090017652A KR 101419556 B1 KR101419556 B1 KR 101419556B1
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temperature
battery
temperature control
unit
battery pack
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KR1020090017652A
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KR20100098931A (en
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윤난지
박혜웅
홍승택
전호진
박성준
최대식
김여진
이한호
최승돈
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주식회사 엘지화학
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
    • H01M10/6572—Peltier elements or thermoelectric devices
    • 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
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • 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
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Battery Mounting, Suspending (AREA)
  • Secondary Cells (AREA)

Abstract

본 발명은 열전현상을 이용한 자가 온도조절 전기자동차용 배터리팩에 관한 것으로, 본 발명에 의한 열전현상을 이용한 자가 온도조절 전기자동차용 배터리팩은 온도가 조절되는 배터리 팩에 있어서, 다수 배치되는 단전지; 상기 단전지를 단위별로 커버링하는 셀 커버; 및 상기 단전지를 쿨링 또는 히팅하여 온도를 조절하는 온도조절소자;를 포함하며, 상기 온도조절소자는 바이패스한 단전지의 전류에 의해 작동된다.The present invention relates to a self-temperature-controlled electric vehicle battery pack using a thermoelectric effect, and a battery pack for a self-temperature-controlled electric vehicle using thermoelectric conversion according to the present invention is a battery pack whose temperature is controlled, ; A cell cover for covering the unit cells by unit; And a temperature regulating element for controlling the temperature by cooling or heating the unit cell, wherein the temperature regulating element is operated by the current of the bypassed single cell.

본 발명에 따르면, 부피 최소화와 함께 배터리의 온도 상승시 온도조절소자에 의해 설정 온도를 유지할 수 있도록 냉각시켜 배터리의 수명을 연장 가능하면서 저온에서 배터리를 온도조절소자에 의해 발열시켜 시동을 걸 때 충분한 출력을 낼 수 있고, 배터리의 냉각 또는 가열이 요구되면 배터리에서 동력원인 전류를 바이패스 하여 별도의 전원이 불필요하며, 간접 방식에 의해 배터리의 온도 조절이 가능하므로 온도 조절에 효과적인 이점이 있다.According to the present invention, it is possible to minimize the volume and increase the life of the battery by cooling the battery to maintain the set temperature by the temperature control element when the temperature rises, and to heat the battery by the temperature control element at a low temperature Power can be output. If battery cooling or heating is required, the power source current is bypassed from the battery, thereby eliminating the need for a separate power source. The temperature of the battery can be adjusted indirectly, which is advantageous in temperature control.

전기자동차, 단전지, 온도조절소자, 간접, 온도 Electric vehicle, single cell, temperature control device, indirect, temperature

Description

열전현상을 이용한 자가 온도조절 전기자동차용 배터리팩{BATTERY PACK FOR SELF TEMPERATURE CONTROL ELECTROMOBILE USING THERMOELECTRIC EFFECT}BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a battery pack for a self-

본 발명은 열전현상을 이용한 자가 온도조절 전기자동차용 배터리팩에 관한 것으로, 더욱 상세하게는 열전현상에 의해 단위별 셀의 온도를 효과적으로 제어할 수 있는 열전현상을 이용한 자가 온도조절 전기자동차용 배터리팩에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a self-temperature-controlled battery pack for an electric vehicle using thermoelectric conversion, and more particularly, .

일반적으로, 전기자동차용 배터리 시스템의 주된 문제점 중 하나가 배터리 시스템의 수명 문제이며, 이는 온도 스트레스에 크게 의존하게 된다.In general, one of the major problems of battery systems for electric vehicles is the life of the battery system, which is highly dependent on thermal stress.

이와 같은 전기자동차의 주동력원인 배터리 시스템은 반복적으로 화학에너지를 전기에너지로 변환시킬 수 있도록 전류를 흘려 넣음으로써 재충전이 가능한 2차 전지를 주로 사용하고 있으며, 이와 같은 2차 전지는 화학 에너지에서 전기 에너지로 변환되면서 부산물로 다량의 열이 발생하게 된다.The battery system, which is the main power source of such electric vehicles, mainly uses secondary batteries capable of being recharged by flowing current so as to repeatedly convert chemical energy into electric energy. As a result of energy conversion, a large amount of heat is generated as a by-product.

특히, 배터리 시스템에 열이 발생할 경우 배터리 시스템 내부의 전해액 온도가 상승함에 따라 전해액 온도가 상승하게 되어 저항도 상승하게 되며, 온도가 낮은 경우 전해액의 비중이 작아짐에 따라 전력 방출이 감소되어 시동성이 저하되고, 온도가 높은 경우 전해액이 증발되어 배터리 시스템의 수명이 급격하게 줄어들게 되므로 배터리 시스템은 최대 성능을 나타내기 위하여 전해액의 온도를 25℃ 정도를 유지하도록 한다.In particular, when heat is generated in the battery system, as the temperature of the electrolyte in the battery system rises, the temperature of the electrolyte rises and the resistance rises. When the temperature is low, the specific gravity of the electrolyte decreases, If the temperature is high, the electrolyte is evaporated and the life of the battery system is drastically reduced. Therefore, the battery system maintains the temperature of the electrolyte at about 25 ° C. in order to exhibit the maximum performance.

한편, 종래에는 배터리 시스템에서 발생하는 열을 수냉 또는 공냉으로 냉각하는 방식을 채택하고 있으나 냉각장치의 부피에 따라 배터리 시스템의 사이즈 또한 상대적으로 커지는 문제점이 있었다.Meanwhile, conventionally, a method of cooling the heat generated in the battery system by water cooling or air cooling has been adopted, but the size of the battery system also becomes relatively large according to the volume of the cooling device.

본 발명은 상기 종래의 문제점을 해결하기 위하여 안출된 것으로서, 그 목적은 부피 최소화와 함께 배터리의 온도 상승시 온도조절소자에 의해 설정 온도를 유지할 수 있도록 냉각시켜 배터리의 수명을 연장 가능하면서 저온에서 배터리를 온도조절소자에 의해 발열시켜 시동을 걸 때 충분한 출력을 낼 수 있게 한 열전현상을 이용한 자가 온도조절 전기자동차용 배터리팩을 제공함에 있다.SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and its object is to provide a battery having a low battery capacity, which can minimize the volume and cool the battery, And a thermoelectric conversion element which generates heat by heating the thermostat element to generate a sufficient output when starting the thermostat.

또한, 본 발명의 다른 목적은 배터리의 냉각 또는 가열이 요구되면 동력원인 배터리에서 전류를 바이패스 하여 별도의 전원이 불필요하고, 간접 방식에 의해 배터리의 온도 조절이 가능하므로 온도 조절에 효과적인 열전현상을 이용한 자가 온도조절 전기자동차용 배터리팩을 제공함에 있다.Another object of the present invention is to provide a method of controlling the temperature of a battery by bypassing a current from a battery as a power source when cooling or heating of the battery is required, And a battery pack for use in a self-temperature-controlled electric vehicle.

상술한 목적을 달성하기 위하여 본 발명은, 온도가 조절되는 배터리 팩에 있어서, 다수 배치되는 단전지; 상기 단전지를 셀 단위 별로 커버링하는 셀 커버; 및 상기 단전지를 쿨링 또는 히팅하여 온도를 조절하는 온도조절소자;를 포함하며, 상 기 온도조절소자는 바이패스한 단전지의 전류에 의해 작동되는 것을 특징으로 한다.According to an aspect of the present invention, there is provided a battery pack whose temperature is controlled, comprising: a plurality of unit cells arranged in a plurality; A cell cover for covering the unit cell by cell unit; And a temperature control element for controlling the temperature by cooling or heating the unit cell, wherein the temperature control element is operated by the current of the bypassed unit cell.

또한, 본 발명에서의 상기 온도조절소자는 상기 단전지의 사이에 개입 설치되는 것을 특징으로 한다.Further, the temperature controlling element in the present invention is interposed between the unit cells.

또한, 본 발명에서의 상기 온도조절소자는 상기 셀 커버의 내측에 설치되는 것을 특징으로 한다.Further, the temperature controlling element in the present invention is provided inside the cell cover.

또한, 본 발명에서의 상기 온도조절소자는 열전소자 또는 열전재료 중 어느 하나인 것을 특징으로 한다.Further, the temperature controlling element in the present invention is characterized by being either a thermoelectric element or a thermoelectric material.

또한, 본 발명에서의 상기 온도조절소자는 시트 형태로 구비되는 것을 특징으로 한다.Further, the temperature controlling element in the present invention is characterized by being provided in a sheet form.

또한, 본 발명에서의 상기 셀 단위 별 단전지는 2개 이상으로 구비되는 것을 특징으로 한다.In addition, the present invention is characterized in that the number of unit cells per unit cell is two or more.

또한, 본 발명에서는 상기 온도조절소자와 이웃한 상기 셀 커버의 내벽에 단열재가 설치되는 것을 특징으로 한다.According to the present invention, a heat insulating material is provided on the inner wall of the cell cover adjacent to the temperature controlling device.

이와 같은 본 발명의 열전현상을 이용한 자가 온도조절 전기자동차용 배터리팩은, 부피 최소화와 함께 배터리의 온도 상승시 온도조절소자에 의해 설정 온도를 유지할 수 있도록 냉각시켜 배터리의 수명을 연장 가능하면서 저온에서 배터리를 온도조절소자에 의해 발열시켜 시동을 걸 때 충분한 출력을 낼 수 있는 효과가 있다.The battery pack for a self-temperature-controlled electric vehicle using the thermoelectric conversion according to the present invention minimizes the volume and cools the battery pack to maintain the set temperature by the temperature controller when the battery temperature rises, The battery is heated by the temperature regulating element to generate sufficient output when starting.

또한, 본 발명은 배터리의 냉각 또는 가열이 요구되면 배터리에서 동력원인 전류를 바이패스 하여 별도의 전원이 불필요하고, 간접 방식에 의해 배터리의 온도 조절이 가능하므로 온도 조절에 효과적인 이점이 있다.In addition, when cooling or heating of a battery is required, the present invention bypasses a current source as a power source of the battery, thereby eliminating the need for a separate power source, and the temperature of the battery can be adjusted indirectly.

이하, 본 발명의 열전현상을 이용한 자가 온도조절 전기자동차용 배터리팩을 첨부도면을 참조하여 일 실시 예를 들어 설명하면 다음과 같다.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a battery pack for a self-temperature-controlled electric vehicle using thermoelectric conversion according to the present invention will be described with reference to the accompanying drawings.

본 발명의 바람직한 일 실시 예에 따른 열전현상을 이용한 자가 온도조절 전기자동차용 배터리팩은 도 1에 도시된 바와 같이 단전지(110), 셀 커버(120) 및 온도조절소자(130)를 포함하여 구성된다. 이때, 상기 단전지(110)의 온도를 조절하기 위해서는 배터리팩(100)에 장착된 BMS(Battery Management System)의 제어신호를 통해 배터리팩(100) 자체에서 해당 전류를 흐르게 한다.1, a battery pack for a self-temperature-controlled electric vehicle using thermoelectric conversion according to a preferred embodiment of the present invention includes a unit cell 110, a cell cover 120, and a temperature control device 130 . At this time, in order to control the temperature of the unit cell 110, a corresponding current flows in the battery pack 100 itself through a control signal of a BMS (Battery Management System) mounted on the battery pack 100.

그리고 상기 단전지(110), 셀 커버(120), 온도조절소자(130), 온도감지센서 및 BMS는 트레이(102) 내부에 구비된다.The unit cell 110, the cell cover 120, the temperature control device 130, the temperature sensor, and the BMS are provided inside the tray 102.

이때, 상기 전기 자동차는 하이브리드차량(HEV: Hybrid Electric Vehicle) 또는 플러그인 하이브리드차량(PHEV: Plug-in Hybrid Electric Vehicle) 등이 이에 접목된다.At this time, the electric vehicle is connected to a hybrid electric vehicle (HEV) or a plug-in hybrid electric vehicle (PHEV).

상기 단전지(110)는 다수 배치되는 셀(cell)로, 적어도 2개 이상마다 한 조를 이루며, 한 조를 이루는 단위별 개수는 증감이 가능하다. 그리고 상기 단전지(110)의 외부 등에 단전지(110)의 온도를 감지하여 BMS로 출력하는 온도감지센 서(도면에 미도시)가 구비된다. 이때, 상기 온도감지센서는 단전지(110)의 단위별마다 구비되는 것이 바람직하다.The unit cells 110 are arranged in a plurality of cells, and at least two groups of cells are formed, and the number of unit cells constituting one cell group can be increased or decreased. And a temperature sensing sensor (not shown) for sensing the temperature of the unit cell 110 on the outside of the unit cell 110 and outputting the sensed temperature to the BMS. At this time, it is preferable that the temperature sensor is provided for each unit of the unit cells 110.

상기 셀 커버(120)는 상기 단전지(110)를 단위별로 커버링(covering)하며, 상기와 같이 2개 이상의 단전지(110)를 커버링하며, 본 발명에서는 2개의 단전지(110)로 구성되는 것을 예시한다.The cell cover 120 covers the unit cells 110 by unit and covers two or more unit cells 110 as described above. In the present invention, the unit cells 120 are composed of two unit cells 110 .

상기 온도조절소자(130)는 단위별 단전지(110)마다 개별적으로 쿨링(cooling) 또는 히팅(heating)하여 온도를 조절하며, 단전지(110)의 전류를 바이패스(bypass)하게 하여 작동된다.The temperature controller 130 is operated by cooling or heating the unit cells 110 by unit to control the temperature and by bypassing the current of the unit cell 110 .

이때, 상기 온도조절소자(130)는 열전소자 또는 열전재료 등 중 어느 하나인 것을 특징으로 하며, 전류 인가시 직류(DC) 전류의 방향에 따라 한쪽 면에서는 발열이 일어나고 반대 면에서는 냉각이 일어나는 펠티어(Peltier) 효과를 이용하는 온도제어 소자이면 어느 것으로도 대체가 가능하다.The temperature control element 130 may be a thermoelectric element or a thermoelectric material. When the current is applied, the temperature control element 130 generates heat in one side and cooling in the other side depending on the direction of the DC current. Or any temperature control device that utilizes the Peltier effect.

더욱이, 상기 온도조절소자(130)는 단위별 단전지(110)의 사이에 개입 설치 즉, 단위별 단전지(110)의 개수가 2개일 경우 그 사이에 시트 형태 등으로 2개가 위치되거나 그 사이와 외측에 각각 시트 형태 등으로 2개씩 구비될 수 있다. 이때, 상기 온도조절소자(130)는 단위별 단전지(110)에 최대한 근접한 위치에 장착되어 간접적으로 온도를 제어하는 것이 바람직하다.In addition, when the number of the unit cells 110 is two, the temperature controlling element 130 may be interposed between the unit cells 110, And two in the form of a sheet on the outer side. At this time, it is preferable that the temperature regulating element 130 is installed at a position as close as possible to the unit cell 110 to control the temperature indirectly.

한편, 다른 실시 예의 온도조절소자(130')는 도 2에 도시된 바와 같이 상기 셀 커버(120)의 프레임 등에 설치되는 것도 선택적으로 가능하여 단위별 단전지(110)의 외측에 각각 대응되도록 구비되며, 시트 형태 등으로 구비될 수 있으면 서 간접적으로 단전지(110)의 온도를 제어하게 된다. 2, the thermostat 130 'may be installed on a frame of the cell cover 120 or the like, and may correspond to the outside of the unit cell 110 by units And the temperature of the unit cell 110 may be indirectly controlled as long as it is provided in a sheet form or the like.

이때, 상기 셀 커버(120)는 내벽에 단열재(140)가 구비되어 셀 커버(120)의 내벽과 이웃하게 위치된 온도조절소자(130')로부터 온도의 영향을 받지 않도록 한다.At this time, the cell cover 120 is provided with a heat insulating material 140 on its inner wall so as not to be influenced by the temperature from the temperature controlling device 130 'positioned adjacent to the inner wall of the cell cover 120.

그리고 상기 온도조절소자(130')의 위치는 이에 한정하지 않고 변경 실시가 가능하다.Further, the position of the temperature regulating element 130 'is not limited thereto and can be changed.

그러므로 본 발명에 의한 열전현상을 이용한 자가 온도조절 전기자동차용 배터리팩은 도 1 및 도 2에 도시된 바와 같이 단위별 단전지(110)의 개별적인 온도 제어를 위해 단전지(110)에서 발생하는 전류를 온도조절소자(130)로 바이패스하게 하여 온도조절소자(130)가 작동되게 한다.Therefore, as shown in FIGS. 1 and 2, the battery pack for a self-temperature-controlled electric vehicle using the thermoelectric effect according to the present invention is characterized in that a current generated in the unit cell 110 for individual temperature control of the unit cells 110 To the temperature regulating element 130 so that the temperature regulating element 130 is operated.

이때, 단위별 단전지(110)의 온도가 설정치 이상으로 상승하면 이를 온도감지센서가 감지한 후 이 신호를 BMS에 출력하고 BMS의 제어 신호에 의해 온도조절소자(130)에 전류를 인가하여 냉각시키고 설정 온도로 하강하면 상기 온도조절소자(130)에 전류를 차단한다.At this time, if the temperature of the unit cell 110 per unit rises above the set value, the temperature sensor senses the temperature of the unit cell 110 and outputs the signal to the BMS, and the current is applied to the temperature control element 130 by the control signal of the BMS, And when the temperature is lowered to the set temperature, the current is cut off to the temperature regulating element 130.

다르게는 겨울과 같이 영하의 저온에 노출되어 차량의 시동이 걸리지 않을 경우를 위해 단위별 단전지(110)의 온도가 설정치 이하로 하강하면 이를 온도감지센서가 감지한 후 이 신호를 BMS에 출력하고 BMS의 제어 신호에 의해 온도조절소자(130)에 전류를 인가하여 가열시키고 설정 온도로 상승하면 상기 온도조절소자(130)에 전류를 차단한다. 즉, 단위별 단전지(110)의 온도를 상승시켜 저온에서 차량의 시동을 걸기 위한 출력을 충분히 낼 수 있도록 하는 것이다.Alternatively, if the temperature of the unit cell 110 per unit falls below the set value in order to prevent the vehicle from being started by being exposed to a low temperature of minus temperature as in winter, the temperature sensor senses the temperature of the unit cell 110 and outputs the signal to the BMS The current is applied to the temperature regulating element 130 by the control signal of the BMS and then the current is shut off to the temperature regulating element 130 when the temperature is raised to the set temperature. That is, the temperature of the unit cells 110 is increased by the unit, so that an output for starting the vehicle at a low temperature can be sufficiently generated.

이상에서 설명한 본 발명의 상세한 설명에서는 본 발명의 바람직한 실시 예를 참조하여 설명하였지만, 본 발명의 보호범위는 상기 실시 예에 한정되는 것이 아니며, 해당 기술분야의 통상의 지식을 갖는 자라면 본 발명의 사상 및 기술영역으로부터 벗어나지 않는 범위 내에서 본 발명을 다양하게 수정 및 변경시킬 수 있음을 이해할 수 있을 것이다.While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

도 1은 본 발명의 일 실시 예에 의한 열전현상을 이용한 자가 온도조절 전기자동차용 배터리팩을 도시한 개략도이다.1 is a schematic view showing a battery pack for a self-temperature-controlled electric vehicle using a thermoelectric effect according to an embodiment of the present invention.

도 2는 본 발명의 다른 실시 예에 의한 열전현상을 이용한 자가 온도조절 전기자동차용 배터리팩을 도시한 개략도이다.2 is a schematic view showing a battery pack for a self-temperature-controlled electric vehicle using thermoelectric conversion according to another embodiment of the present invention.

< 도면의 주요 부분에 대한 부호의 설명 >Description of the Related Art

100: 배터리팩 110: 단전지100: Battery pack 110: Single cell

120: 셀 커버 130, 130': 온도조절소자120: cell cover 130, 130 ': temperature control element

140: 단열재140: Insulation

Claims (7)

온도가 조절되는 배터리 팩에 있어서,In a battery pack whose temperature is controlled, 다수 배치되는 단전지;A plurality of single cells arranged; 상기 단전지를 단위별로 커버링하는 셀 커버; 및A cell cover for covering the unit cells by unit; And 상기 단전지를 쿨링 또는 히팅하여 온도를 조절하는 온도조절소자;를 포함하며,And a temperature control element for controlling the temperature by cooling or heating the unit cell, 상기 온도조절소자는 바이패스한 단전지의 전류에 의해 작동되며, 상기 셀 커버의 내측에 설치되는 것을 특징으로 하는 열전현상을 이용한 자가 온도조절 전기자동차용 배터리팩.Wherein the temperature control element is operated by a current of the bypassed single cell and is installed inside the cell cover. 제 1항에 있어서, The method according to claim 1, 상기 온도조절소자는 상기 단전지의 사이에 개입 설치되는 것을 특징으로 하는 열전현상을 이용한 자가 온도조절 전기자동차용 배터리팩.Wherein the temperature control element is interposed between the unit cells. &Lt; RTI ID = 0.0 &gt; 15. &lt; / RTI &gt; 삭제delete 제 1항 또는 제 2항에 있어서,3. The method according to claim 1 or 2, 상기 온도조절소자는 열전소자 또는 열전재료 중 어느 하나인 것을 특징으로 하는 열전현상을 이용한 자가 온도조절 전기자동차용 배터리팩.Wherein the temperature control element is any one of a thermoelectric element and a thermoelectric material. 제 4항에 있어서, 5. The method of claim 4, 상기 온도조절소자는 시트 형태로 구비되는 것을 특징으로 하는 열전현상을 이용한 자가 온도조절 전기자동차용 배터리팩.Wherein the temperature regulating element is provided in a sheet form. 제 1항에 있어서, The method according to claim 1, 상기 단위별 단전지는 2개 이상으로 구비되는 것을 특징으로 하는 열전현상을 이용한 자가 온도조절 전기자동차용 배터리팩.Wherein each unit cell is provided with two or more unit cells. 제 1항에 있어서,The method according to claim 1, 상기 온도조절소자와 이웃한 상기 셀 커버의 내벽에 단열재가 설치되는 것을 특징으로 하는 열전현상을 이용한 자가 온도조절 전기자동차용 배터리팩.And a heat insulating material is provided on an inner wall of the cell cover adjacent to the temperature controlling device.
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