KR102364202B1 - Battery pack for electric vehicles with improved cooling performance - Google Patents

Battery pack for electric vehicles with improved cooling performance Download PDF

Info

Publication number
KR102364202B1
KR102364202B1 KR1020200045349A KR20200045349A KR102364202B1 KR 102364202 B1 KR102364202 B1 KR 102364202B1 KR 1020200045349 A KR1020200045349 A KR 1020200045349A KR 20200045349 A KR20200045349 A KR 20200045349A KR 102364202 B1 KR102364202 B1 KR 102364202B1
Authority
KR
South Korea
Prior art keywords
battery module
plate
cooling
battery
housing
Prior art date
Application number
KR1020200045349A
Other languages
Korean (ko)
Other versions
KR20210127465A (en
Inventor
송대천
남상현
Original Assignee
에너테크인터내셔널 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 에너테크인터내셔널 주식회사 filed Critical 에너테크인터내셔널 주식회사
Priority to KR1020200045349A priority Critical patent/KR102364202B1/en
Priority to PCT/KR2020/006320 priority patent/WO2021210717A1/en
Publication of KR20210127465A publication Critical patent/KR20210127465A/en
Application granted granted Critical
Publication of KR102364202B1 publication Critical patent/KR102364202B1/en

Links

Images

Classifications

    • 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
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • 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
    • B60L58/26—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 by cooling
    • 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
    • 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
    • H01M10/613—Cooling or keeping cold
    • 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
    • H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
    • 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
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • 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
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • 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
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/222—Inorganic material
    • H01M50/224—Metals
    • 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
    • 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
    • H01M50/258—Modular batteries; Casings provided with means for assembling
    • 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
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/91—Electric vehicles
    • 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

Abstract

본 발명은 냉각판을 배터리모듈과 직접 접촉시켜 균일한 냉각이 이루어지도록 함으로써 냉각 효율을 향상시킴과 동시에, 수냉식으로서 외부 공기를 이용함에 따른 방진관리와 내부의 분진 오염 문제를 해소할 수 있으며, 냉각판의 구조와 배터리모듈 및 하우징과의 결합구조를 최적화하여 구성을 간소화함으로써 배터리팩의 전체 사이즈가 커지는 것을 방지하고, 냉각기능의 구동을 위한 전원을 사용하지 않아 배터리의 소모량을 줄여 사용효율을 더욱 높일 수 있는 전기자동차용 배터리팩을 제공한다.
본 발명의 전기자동차용 배터리팩은, 다수개의 배터리셀을 적층하여 양측면에서 고정플레이트로 고정하여 이루어진 배터리모듈과, 배터리모듈을 내부에 수용하기 위한 하우징과, 하우징과 배터리모듈 사이에 위치하여 배터리모듈의 적층된 배터리셀과 일측면이 접촉하도록 배치되고 차량의 냉각수가 내부통로로 유입되는 입구와 배출되는 출구를 구비하여 내부통로로 흐르는 냉각수에 의해 배터리모듈의 열을 낮추도록 된 냉각판을 포함하여 이루어진 것이다.The present invention improves cooling efficiency by bringing the cooling plate into direct contact with the battery module so that uniform cooling is achieved, and at the same time, as a water cooling type, it is possible to solve the problem of dust control and internal dust pollution caused by using external air, and cooling By optimizing the structure of the plate and the coupling structure with the battery module and housing to simplify the configuration, the overall size of the battery pack is prevented from increasing. We provide battery packs for electric vehicles that can be increased.
The battery pack for an electric vehicle of the present invention includes a battery module formed by stacking a plurality of battery cells and fixing them with fixing plates on both sides, a housing for accommodating the battery module therein, and a battery module positioned between the housing and the battery module Including a cooling plate disposed so that one side of the stacked battery cells and one side come into contact with each other and having an inlet and an outlet for the vehicle coolant to flow into the inner passage to lower the heat of the battery module by the coolant flowing into the inner passage. it has been done

Description

냉각 성능을 향상시킨 전기자동차용 배터리팩{Battery pack for electric vehicles with improved cooling performance}Battery pack for electric vehicles with improved cooling performance

본 발명은 전기자동차용 배터리팩에 관한 것으로, 더욱 상세하게는 배터리의 고출력시 발생하는 과열을 방지하기 위하여 배터리의 온도가 적정하게 유지되게 하는 냉각 성능을 향상시킨 전기자동차용 배터리팩에 관한 것이다.The present invention relates to a battery pack for an electric vehicle, and more particularly, to a battery pack for an electric vehicle with improved cooling performance that allows the temperature of the battery to be properly maintained in order to prevent overheating that occurs during high output of the battery.

일반적으로 전기자동차 또는 하이브리드 차량에 사용되는 리튬 이온 배터리는 고출력 동작시 발열현상이 발생한다. 이러한 발열에 대해 효율적인 열관리가 이루어지지 않을 경우 과열로 인해 화재나 폭발의 위험이 있다. 또한 배터리가 고온에서 사용되면 수명이 감소하여 교체시기가 빨리 도래하므로 배터리 유지비용 증가의 문제도 발생한다. 따라서, 배터리의 고출력 동작시 적정한 온도를 유지할 수 있도록 관리할 필요가 있다.In general, lithium ion batteries used in electric vehicles or hybrid vehicles generate heat during high-output operation. If efficient thermal management is not performed for such heat, there is a risk of fire or explosion due to overheating. In addition, when the battery is used at a high temperature, the lifespan of the battery decreases, and the replacement period arrives sooner, thereby increasing the maintenance cost of the battery. Accordingly, it is necessary to manage the battery to maintain an appropriate temperature during high-output operation of the battery.

종래에도 상기한 문제를 해결하기 위해 제안된 것이 있다. 예를 들면 대한민국 등록특허 제10-0534730호의 전기자동차용 배터리 트레이 냉각장치(이하, '선행기술'이라 함.)가 알려져 있다.In the prior art, there are some that have been proposed to solve the above problems. For example, a battery tray cooling device for an electric vehicle of Republic of Korea Patent Registration No. 10-0534730 (hereinafter referred to as 'prior art') is known.

상기 선행기술은, 도 9에 도시된 바와 같이 배터리 트레이(200)의 일측에 장착되어 내부로 공기를 흡입하도록 하는 냉각팬(210)과, 상기 배터리 트레이(200) 내부에 설치되는 배터리모듈(220)의 하부에 장착되어 배터리모듈(220)에서 발생하는 열을 흡열하는 흡열부재(230)와, 상기 흡열부재(230)에 일단이 장착되어 열을 전달하는 히트파이프(240)와, 상기 히트파이프(240)의 타단에 장착되는 발열부재(250)와, 상기 발열부재(250)에 장착되며 양단에 직류전류를 인가하면 일단은 발열하며 타단은 흡열하여 온도가 제어되도록 발열부재(250)에 장착되는 펠티에소자(260)로 구성되어 있다.In the prior art, as shown in FIG. 9 , a cooling fan 210 mounted on one side of the battery tray 200 to suck air inside, and a battery module 220 installed inside the battery tray 200 . ) and a heat absorbing member 230 for absorbing heat generated by the battery module 220, and a heat pipe 240 having one end mounted on the heat absorbing member 230 to transfer heat, and the heat pipe The heating member 250 is mounted on the other end of the 240, and it is mounted on the heating member 250. When a direct current is applied to both ends, one end heats up and the other end absorbs heat to control the temperature. It is composed of a Peltier element (260).

이러한 구성의 선행기술에 의하면, 냉각팬(210)을 작동하여 배터리 트레이(200) 내로 공기를 흡입시키고, 펠티에소자(260)의 작동을 제어하여 히트파이프(240)로 전달되는 배터리(220)의 열이 냉각된다. 따라서 다수개 설치되는 배터리모듈(220)를 동시에 냉각시키는 장점이 있다.According to the prior art of this configuration, by operating the cooling fan 210 to suck air into the battery tray 200, and to control the operation of the Peltier element 260 of the battery 220 delivered to the heat pipe (240) heat is cooled Therefore, there is an advantage of cooling the battery modules 220 installed in plurality at the same time.

그러나, 선행기술은 외부 공기를 이용하는 공랭식으로 방진관리가 필요하고, 방진관리가 되어 있지 않을 경우 배터리 트레이(200) 내부에 분진 오염의 문제가 있으며, 공기순환을 위한 통로 공간이 마련되어야 하므로 배터리팩 조립체의 전체 사이즈가 커지는 단점이 있고, 공기 흐름이 원활하지 못할 경우 냉각 효율이 급격히 저하될 수 있고 배터리팩 전체에 균일하게 전달되지 못할 경우 특정부위에서 과열되는 문제가 있다.However, the prior art requires dust-proof management in an air-cooled manner using external air, and when dust-proof management is not performed, there is a problem of dust contamination inside the battery tray 200, and since a passage space for air circulation must be provided, the battery pack There is a disadvantage in that the overall size of the assembly increases, and if the air flow is not smooth, cooling efficiency may be rapidly reduced, and if it is not uniformly transmitted to the entire battery pack, there is a problem of overheating in a specific area.

또한 냉각팬(210), 흡열부재(230), 히트파이프(240), 발열부재(250) 및 펠티에소자(260) 등 많은 구성요소를 배터리 트레이(200)에 설치해야 하므로 구조가 복잡하고, 더욱이 냉각팬(210)과 펠티에소자(260)에 별도의 전원을 공급해야 하므로 이를 위해 배터리 전력을 이용할 경우, 배터리 사용효율을 더욱 저하시키는 문제가 발생한다.In addition, since many components such as the cooling fan 210, the heat absorbing member 230, the heat pipe 240, the heat generating member 250 and the Peltier element 260 must be installed in the battery tray 200, the structure is complicated, and further Since it is necessary to supply separate power to the cooling fan 210 and the Peltier device 260 , when battery power is used for this, there is a problem of further lowering the battery usage efficiency.

본 발명은 상기와 같은 종래의 문제를 해결하기 위한 것으로, 그 목적은 차량의 엔진 냉각을 위해 사용되는 냉각수를 이용한 냉각판을 배터리모듈과 직접 접촉시켜 균일한 냉각이 이루어지도록 함으로써 냉각 효율을 향상시킴과 동시에, 수냉식으로서 외부 공기를 이용함에 따른 방진관리와 내부의 분진 오염 문제를 해소할 수 있는 전기자동차용 배터리팩 조립체를 제공하는데 있다.The present invention is to solve the conventional problems as described above, and an object of the present invention is to improve cooling efficiency by directly contacting a cooling plate using coolant used for engine cooling of a vehicle with a battery module to achieve uniform cooling. At the same time, it is to provide a battery pack assembly for an electric vehicle that can solve the problem of dust pollution management and internal dust pollution caused by using external air as a water cooling type.

또한 본 발명은 냉각판의 구조와 배터리모듈 및 하우징과의 결합구조를 최적화하여 구성을 간소화함으로써 배터리팩의 전체 사이즈가 커지는 것을 방지하고, 냉각기능의 구동을 위한 전원을 사용하지 않아 배터리의 소모량을 줄여 사용효율을 더욱 높일 수 있는 전기자동차용 배터리팩을 제공하는데 있다.In addition, the present invention simplifies the configuration by optimizing the structure of the cooling plate and the coupling structure between the battery module and the housing, thereby preventing the overall size of the battery pack from increasing, and reducing the consumption of the battery by not using the power for driving the cooling function. It is to provide a battery pack for an electric vehicle that can further increase usage efficiency by reducing it.

상기의 목적을 달성하기 위하여 본 발명은, 다수개의 배터리셀을 적층하여 양측면에서 고정플레이트로 고정하여 이루어진 배터리모듈; 상기 배터리모듈을 내부에 수용하기 위한 하우징; 및 상기 하우징과 배터리모듈 사이에 위치하여 배터리모듈의 적층된 배터리셀과 일측면이 접촉하도록 배치되고, 차량의 냉각수가 내부통로로 유입되는 입구와 배출되는 출구를 구비하여, 내부통로로 흐르는 냉각수에 의해 배터리모듈의 열을 낮추도록 된 냉각판을 포함하는 냉각 성능을 향상시킨 전기자동차용 배터리팩에 특징이 있다.In order to achieve the above object, the present invention provides a battery module formed by stacking a plurality of battery cells and fixing them with fixing plates on both sides; a housing for accommodating the battery module therein; and disposed between the housing and the battery module so as to be in contact with one side of the stacked battery cells of the battery module, and having an inlet through which the vehicle's cooling water flows into the inner passage and an outlet through which the vehicle's coolant is discharged. A battery pack for an electric vehicle with improved cooling performance is characterized by including a cooling plate designed to lower the heat of the battery module.

또한 본 발명에 있어서, 상기 배터리모듈에 구비되어 배터리모듈의 온도를 검출하기 위한 제1 온도센서; 냉각판의 입구에 구비되어 입구로 유입되는 냉각수의 온도를 검출하기 위한 제2 온도센서; 및 상기 제1 온도센서와 제2 온도센서로부터 검출된 배터리모듈과 냉각수의 온도정보를 차량의 중앙처리시스템(CPU)에 제공하기 위한 온도관리시스템을 더 포함하는 냉각 성능을 향상시킨 전기자동차용 배터리팩에 특징이 있다.In addition, in the present invention, a first temperature sensor provided in the battery module to detect the temperature of the battery module; a second temperature sensor provided at the inlet of the cooling plate to detect the temperature of the coolant flowing into the inlet; and a temperature management system for providing temperature information of the battery module and coolant detected from the first temperature sensor and the second temperature sensor to a central processing system (CPU) of the vehicle. There are features in the pack.

또한 본 발명에 있어서, 상기 냉각판은 배터리모듈의 배터리셀과 접촉하는 편평한 판상의 후면판; 상기 후면판과 소정틈새를 유지하여 배치되는 전면판; 및 상기 후면판과 전면판 사이의 가장자리부에 배치되어 후면판과 전면판 사이에 내부통로가 형성되도록 하는 테두리프레임을 포함하며, 상기 전면판에는 후면판과 끝단이 접촉하여 내부통로를 부분적으로 막아 냉각수의 흐름시 내부통로에서 와류를 발생시킴으로써 흐름이 지연되도록 하는 다수개의 오목형상부를 형성하고, 상기 후면판, 전면판 및 테두리프레임은 알루미늄 합금재질로 제작하여 브레이징 용접으로 상호 고정하는 냉각 성능을 향상시킨 전기자동차용 배터리팩에 특징이 있다.In addition, in the present invention, the cooling plate is a flat plate-shaped rear plate in contact with the battery cells of the battery module; a front plate disposed to maintain a predetermined gap with the rear plate; and an edge frame disposed on an edge portion between the rear plate and the front plate to form an internal passage between the rear plate and the front plate, wherein the front plate has an end in contact with the rear plate to partially block the internal passage A plurality of concave parts are formed to delay the flow by generating a vortex in the internal passage when the coolant flows, and the rear plate, the front plate and the frame frame are made of an aluminum alloy material and fixed to each other by brazing to improve cooling performance. It is characterized by battery packs for electric vehicles.

또한 본 발명에 있어서, 상기 후면판과 전면판 사이의 내부통로 중간에 배치되고 내부통로를 2분할하는 중앙프레임을 더 포함하며, 상기 중앙프레임은 알루미늄 합금재질로 제작되고, 후면판, 전면판 및 테두리프레임의 브레이징 용접시 함께 용접되어 고정되는 냉각 성능을 향상시킨 전기자동차용 배터리팩에 특징이 있다.In addition, in the present invention, it is disposed in the middle of the inner passage between the rear plate and the front plate and further comprises a central frame dividing the inner passage into two, the central frame is made of an aluminum alloy material, the rear plate, the front plate and It is characterized by battery packs for electric vehicles with improved cooling performance that are welded together and fixed during brazing welding of the frame frame.

또한 본 발명에 있어서, 상기 냉각판의 후면판과 배터리모듈 사이에 개재하여 밀착시킨 접착력이 있는 아크릴재질의 써멀패드를 더 포함하는 냉각 기능을 향상시킨 전기자동차용 배터리팩에 특징이 있다.In addition, in the present invention, there is a feature in the battery pack for an electric vehicle having an improved cooling function, which further includes a thermal pad of an acrylic material having an adhesive force interposed between the rear plate of the cooling plate and the battery module.

또한 본 발명에 있어서, 상기 냉각판의 상단 가장자리부는 배터리모듈의 고정플레이트의 상단과 하우징의 상단에 고정하고, 상기 냉각판의 하단 가장자리부는 하우징의 하단에 고정하며, 상기 배터리모듈의 고정플레이트와 하우징 사이에는 배터리모듈을 냉각판쪽으로 이동시켜 배터리모듈이 냉각판의 후면판에 밀착되게 하는 당김기구가 구비된 냉각 기능을 향상시킨 전기자동차용 배터리팩에 특징이 있다.Further, in the present invention, the upper edge of the cooling plate is fixed to the upper end of the fixing plate of the battery module and the upper end of the housing, and the lower edge of the cooling plate is fixed to the lower end of the housing, and the fixing plate and the housing of the battery module are fixed to the lower end of the housing. In between, the battery pack for an electric vehicle with an improved cooling function is characterized by a pulling mechanism that moves the battery module toward the cooling plate so that the battery module is in close contact with the rear plate of the cooling plate.

상기의 특징적 구성을 가지는 본 발명의 전기자동차용 배터리팩에 의하면, 차량의 엔진을 냉각시키는 냉각수를 이용한 냉각판을 배터리모듈과 직접 접촉시켜 열을 냉각시키는 것이므로 공기를 이용한 공냉식에 비하여 냉각효율을 향상시킬 수 있음과 동시에, 종래에 외부공기 사용으로 인한 방진관리 및 배터리팩 내부의 분진 오염의 염려가 없으며, 냉각기능의 구동을 위한 전원을 사용하지 않아 배터리의 사용효율을 더욱 높이는 효과가 있다.According to the battery pack for an electric vehicle of the present invention having the above characteristic configuration, since the cooling plate using the coolant for cooling the engine of the vehicle is in direct contact with the battery module to cool the heat, the cooling efficiency is improved compared to the air cooling type using air. At the same time, there is no concern about dust-proof management and dust contamination inside the battery pack due to the use of outside air in the prior art, and the power supply for driving the cooling function is not used, thereby further increasing the use efficiency of the battery.

또한 본 발명은 냉각판의 내부통로로 흐르는 냉각수에 와류를 일으켜 흐름을 더욱 지연시키면서 냉각수가 냉각판 전체에 걸쳐 균일하게 분포되어 흐르게 하고, 냉각판과 배터리모듈과의 균일한 접촉과 밀착력을 증대시킴에 따라, 냉각판과 배터리모듈 사이의 열교환 효율이 더욱 향상되는 효과가 있다.In addition, the present invention causes a vortex in the cooling water flowing through the internal passage of the cooling plate to further delay the flow, and allows the cooling water to be uniformly distributed throughout the cooling plate and increase the uniform contact and adhesion between the cooling plate and the battery module. Accordingly, there is an effect that the heat exchange efficiency between the cooling plate and the battery module is further improved.

또한 본 발명은 냉각판을 얇은 판상으로 구성하여 배터리모듈과 하우징 사이에 배치하고, 냉각판, 배터리모듈 및 하우징의 상호간 결합구조를 최적화하여 협소한 하우징 내부 구성을 간소화함으로써 배터리팩의 전체 사이즈가 커지는 것을 방지하는 효과가 있다. In addition, the present invention configures the cooling plate in a thin plate shape and arranges it between the battery module and the housing, and optimizes the mutual coupling structure of the cooling plate, the battery module and the housing to simplify the narrow housing internal configuration, thereby increasing the overall size of the battery pack. has the effect of preventing

도 1은 본 발명에 따른 전기자동차용 배터리팩을 나타낸 분해사시도.
도 2는 본 발명에 따른 전기자동차용 배터리팩의 조립상태를 개략적으로 나타낸 평면도.
도 3은 도 1에서 냉각판을 나타낸 분해사시도.
도 4는 도 1에 나타낸 냉각판의 횡단면도.
도 5는 도 1에서 냉각판의 상단 가장자리부에 대한 고정구조를 나타낸 주요부 단면도.
도 6은 도 1에서 냉각판의 하단 가장자리부에 대한 고정구조를 나타낸 주요부 단면도.
도 7은 도 1에서 배터리모듈을 냉각판에 밀착시키기 위한 당김기구를 나타낸 주요부 사시도.
도 8의 (a) 및 (b)는 본원발명의 냉각판과 직선형 내부통로를 가지는 냉각판의 냉각수 흐름분포도.
도 9는 종래의 공랭식 냉각장치가 구비된 전기자동차용 배터리팩을 나타낸 개략도. 1 is an exploded perspective view showing a battery pack for an electric vehicle according to the present invention.
2 is a plan view schematically showing an assembled state of the battery pack for an electric vehicle according to the present invention.
3 is an exploded perspective view showing the cooling plate in FIG. 1 ;
Fig. 4 is a cross-sectional view of the cooling plate shown in Fig. 1;
FIG. 5 is a sectional view of a main part showing a fixing structure for an upper edge of a cooling plate in FIG. 1;
FIG. 6 is a sectional view of a main part showing a fixing structure for a lower edge of a cooling plate in FIG. 1;
Fig. 7 is a perspective view of a main part showing a pulling mechanism for attaching the battery module to a cooling plate in Fig. 1;
8 (a) and (b) are the cooling water flow distribution diagrams of the cooling plate of the present invention and the cooling plate having a straight internal passage.
9 is a schematic view showing a battery pack for an electric vehicle equipped with a conventional air-cooling cooling device.

이하, 본 발명의 바람직한 실시예를 첨부도면에 의거하여 상세하게 설명한다. 도 1 및 도 2는 본 발명에 따른 전기자동차용 배터리팩을 나타낸 분리사시도 및 개략평면도로서, 도시된 바와 같이 본 발명의 배터리팩은 배터리모듈(10), 하우징(20) 및 냉각판(30)을 포함하여 이루어진다.Hereinafter, a preferred embodiment of the present invention will be described in detail based on the accompanying drawings. 1 and 2 are an exploded perspective view and a schematic plan view of a battery pack for an electric vehicle according to the present invention. As shown, the battery pack of the present invention includes a battery module 10, a housing 20 and a cooling plate 30. is made including

배터리모듈(10)은, 다수개의 배터리셀(11)을 횡방향으로 적층하여 횡방향 양측면에서 고정플레이트(12)로 고정하여 이루어진 것으로, 본 실시예에서는 4개의 배터리모듈(10)을 횡방향으로 배치하여 고정플레이트(12)로 결합한 것을 예시하고 있으나, 배터리모듈(10)의 배치수는 배터리 전체 용량이나 배치할 공간에 따라 변경될 수 있다.The battery module 10 is made by stacking a plurality of battery cells 11 in the transverse direction and fixing them with fixing plates 12 on both sides in the transverse direction. Although the arrangement is exemplified in combination with the fixed plate 12 , the number of arrangement of the battery modules 10 may be changed according to the total capacity of the battery or the space to be arranged.

하우징(20)은 상기 배터리모듈(10)을 내부에 수용하기 위한 것으로, 수용되는 배터리모듈(10)의 외형과 대응하는 내부공간을 가지도록 형성한다.The housing 20 is for accommodating the battery module 10 therein, and is formed to have an internal space corresponding to the external shape of the accommodated battery module 10 .

냉각판(30)은 배터리모듈(10)의 배터리셀(11)이 노출된 일측면과 하우징(20)의 대향측 내면 사이에 위치하는 것으로, 냉각판(30)의 일측면이 배터리모듈(10)의 노출된 배터리셀(11)의 일측면과 접촉하도록 배치된다. 따라서 본 실시예에서와 같이 4개의 배터리모듈(10)이 횡방향으로 배치된 경우, 냉각판(30)은 이에 대응하여 횡방향으로 긴 판형태로 형성된다.The cooling plate 30 is positioned between the one side of the battery module 10 on which the battery cells 11 are exposed and the inner surface of the housing 20 on the opposite side. One side of the cooling plate 30 is the battery module 10 . ) is disposed so as to be in contact with one side of the exposed battery cell 11 . Therefore, when the four battery modules 10 are arranged in the transverse direction as in the present embodiment, the cooling plate 30 is formed in a transversely long plate shape corresponding thereto.

냉각판(30)은 차량의 냉각수, 예를 들면 엔진을 냉각시킬 때 사용하는 냉각수를 이용하는 것으로, 냉각수가 내부통로(31)로 유입되는 입구(30a)와 내부통로(31)에서 배출되는 출구(30b)를 구비하여, 내부통로(31)로 흐르는 냉각수가 배터리모듈(10)의 열을 흡수하여 낮추도록 되어 있다.The cooling plate 30 uses the vehicle's coolant, for example, coolant used to cool the engine. 30b), the cooling water flowing through the inner passage 31 absorbs the heat of the battery module 10 to lower it.

도 3 및 도 4에 도시된 바와 같이 냉각판(30)은 후면판(32)과 전면판(33)을 맞대어 형성되는 것으로, 후면판(32)은 배터리모듈(10)의 배터리셀(11)과 접촉하는 부분으로 편평한 판상으로 형성되고, 전면판(33)은 상기 후면판(32)과 대응하는 판상으로 형성되어 소정틈새를 유지하여 배치된다.As shown in FIGS. 3 and 4 , the cooling plate 30 is formed by facing the rear plate 32 and the front plate 33 , and the rear plate 32 is the battery cell 11 of the battery module 10 . It is formed in a flat plate shape as a part in contact with the front plate 33 and is formed in a plate shape corresponding to the rear plate 32 and is disposed by maintaining a predetermined gap.

후면판(32)과 전면판(33) 사이의 가장자리부에는 테두리프레임(34)이 배치되어 후면판(32)과 전면판(33) 사이에 냉각수가 흐르는 내부통로(31)를 형성하게 된다. 후면판(32)과 전면판(33) 사이의 내부통로(31) 중간에는 내부통로(31)를 2분할함과 동시에 냉각판(30)의 변형을 방지하도록 구조적 강도를 보강하는 중앙프레임(35)을 배치하고 있다. An edge frame 34 is disposed on the edge between the rear plate 32 and the front plate 33 to form an internal passage 31 through which coolant flows between the rear plate 32 and the front plate 33 . In the middle of the inner passage 31 between the rear plate 32 and the front plate 33, the inner passage 31 is divided into two and at the same time, a central frame 35 for reinforcing structural strength to prevent deformation of the cooling plate 30. ) is placed.

또한, 전면판(33)에는 후면판(32)과 끝단이 접촉하여 내부통로(31)를 부분적으로 막아 냉각수의 흐름시 내부통로(31)에서 와류를 발생시킴으로써 흐름이 지연되도록 하고, 냉각수의 흐름을 내부통로(31) 전체에 걸쳐 균일하게 분포시키도록 특정의 패턴으로 배치된 원형의 오목형상부(33a)를 다수 형성하고 있다. In addition, the front plate 33 has the rear plate 32 and the end in contact with the inner passage 31 to partially block the flow of the coolant, thereby generating a vortex in the inner passage 31 to delay the flow, and to delay the flow of the coolant. A plurality of circular concave-shaped portions 33a arranged in a specific pattern are formed so as to uniformly distribute them throughout the inner passage 31 .

이와 같이 냉각판(30)을 구성하는 후면판(32), 전면판(33), 테두리프레임(34) 및 중앙프레임(35)은 열전도율과 기계적 강도가 우수한 알루미늄 합금재질로 제작하는 것이 바람직하고, 브레이징(brazing) 용접으로 상호 견고하게 고정함과 동시에, 내부통로(31)에 대하여 확실한 수밀이 유지되도록 한다.As such, the rear plate 32, the front plate 33, the frame frame 34 and the center frame 35 constituting the cooling plate 30 are preferably made of an aluminum alloy material having excellent thermal conductivity and mechanical strength, It is fixed to each other firmly by brazing welding, and at the same time, a reliable watertightness is maintained with respect to the inner passage (31).

다시 도 1을 참조하면, 냉각판(30)의 후면판(32)과 배터리모듈(10) 사이에는 열전도율이 우수한 아크릴재질의 써멀패드(36)가 개재된다. 아크릴재질의 써멀패드(36)는 냉각판(30)의 알루미늄 합금재질보다 어느정도 신축성이 있고, 접착력이 있으며 굴곡 변형 가능하므로, 냉각판(30)의 후면판(32)을 직접 배터리모듈(10)에 밀착하여 접촉시키는 것에 비하여 써멀패드(35)를 개재하여 접촉시키는 것이 평면도 오차로 인해 비접촉 부분이 발생하는 것을 최소화할 수 있다. Referring back to FIG. 1 , a thermal pad 36 made of an acrylic material having excellent thermal conductivity is interposed between the rear plate 32 of the cooling plate 30 and the battery module 10 . The acrylic thermal pad 36 has more elasticity than the aluminum alloy material of the cooling plate 30, has adhesive strength, and can be bent and deformed, so the rear plate 32 of the cooling plate 30 is directly connected to the battery module 10. Compared to making contact with the , contact with the thermal pad 35 interposed therebetween can minimize the occurrence of a non-contact portion due to a flatness error.

또한 도 2에서와 같이 배터리모듈(10)에는 제1 온도센서(41)가 구비되고, 냉각판(30)의 입구(30a)에는 제2 온도센서(42)가 구비되어 있다. 따라서 제1 온도센서(41)에 의해 검출된 배터리모듈(10)의 온도정보와 제2 온도센서(42)에 의해 검출된 냉각수의 온도정보를 온도관리시스템(43)을 통해 차량의 중앙처리시스템(CPU)에 제공함으로써, 배터리모듈(10)의 과열정도에 따라 냉각판(30)으로 공급되는 냉각수의 온도를 적절하게 조절할 수 있다.Also, as shown in FIG. 2 , a first temperature sensor 41 is provided in the battery module 10 , and a second temperature sensor 42 is provided at the inlet 30a of the cooling plate 30 . Accordingly, the temperature information of the battery module 10 detected by the first temperature sensor 41 and the temperature information of the coolant detected by the second temperature sensor 42 are transferred to the vehicle's central processing system through the temperature management system 43 . By providing (CPU), the temperature of the cooling water supplied to the cooling plate 30 can be appropriately adjusted according to the degree of overheating of the battery module 10 .

본 발명의 배터리팩을 구성하는 배터리모듈(10), 하우징(20) 및 냉각판(30)의 고정구조는, 도 1에 도시된 바와 같이, 냉각판(30)의 상단 가장자리부를 배터리모듈(10)의 고정플레이트(12) 상단과 하우징(20)의 상단에 고정하고, 냉각판(30)의 하단 가장자리부는 하우징(20)의 하단에 고정하여 이루어진다.The fixing structure of the battery module 10, the housing 20, and the cooling plate 30 constituting the battery pack of the present invention is, as shown in FIG. 1, the upper edge of the cooling plate 30 to the battery module 10 ) fixed to the upper end of the fixing plate 12 and the upper end of the housing 20 , and the lower edge of the cooling plate 30 is fixed to the lower end of the housing 20 .

즉, 도 5에 도시된 바와 같이 냉각판(30)의 상단 가장자리부 고정은, 배터리모듈(10)의 고정플레이트(12), 냉각판(30)의 상단 가장자리부, 하우징(20)의 상단에 관통구멍을 각각 형성하고, 볼트(51)와 너트(52)로 체결함으로써 고정되고, 냉각판(30)의 상단 가장자리부를 따라 복수곳에서 견고하게 고정한다.That is, as shown in FIG. 5 , the upper edge portion of the cooling plate 30 is fixed to the fixing plate 12 of the battery module 10 , the upper edge portion of the cooling plate 30 , and the upper end of the housing 20 . Through holes are formed, respectively, and they are fixed by fastening them with bolts 51 and nuts 52 , and they are firmly fixed at a plurality of places along the upper edge of the cooling plate 30 .

도 6에 도시된 바와 같이 냉각판(30)의 하단 가장자리부 고정은, 냉각판(30)의 하단 가장자리부와 하우징(20)의 하단에 관통구멍을 각각 형성하고, 역시 볼트(53)와 너트(54)로 체결함으로써 고정되고, 냉각판(30)의 하단 가장자리부를 따라 복수곳에서 견고하게 고정한다.As shown in FIG. 6 , the fixing of the lower edge of the cooling plate 30 forms a through hole in the lower edge of the cooling plate 30 and the lower end of the housing 20, respectively, and also the bolt 53 and the nut It is fixed by fastening at (54), and is firmly fixed at a plurality of places along the lower edge of the cooling plate (30).

한편, 도 7은 도 1에 도시된 방향의 반대쪽에서 본 하우징(20) 내부의 주요부 사시도로서, 배터리모듈(10)을 냉각판(30)쪽으로 당겨 밀착시키기 위한 당김기구를 나타낸 것이다.Meanwhile, FIG. 7 is a perspective view of the main part of the inside of the housing 20 as viewed from the opposite side of the direction shown in FIG. 1 , and shows a pulling mechanism for pulling the battery module 10 toward the cooling plate 30 to closely adhere it.

당김기구는, 배터리모듈(10)의 고정플레이트(12)와 하우징(20)의 바닥 사이에 구비되어 배터리모듈(10)을 냉각판(30)쪽으로 이동시켜 배터리모듈(10)을 냉각판(30)의 후면판(32)에 밀착시키는 기능을 수행한다.The pulling mechanism is provided between the fixing plate 12 of the battery module 10 and the bottom of the housing 20 to move the battery module 10 toward the cooling plate 30 to move the battery module 10 to the cooling plate 30 ) performs a function of adhering to the rear plate 32 .

이러한 당김기구(60)는 하우징(20) 바닥에 지지편(22)을 가지는 지지브라켓(21)이 용접되어 있고, 배터리모듈(10)의 고정플레이트(12)에는 상기 지지브라켓(21)의 지지편(22)에 대응하여 배터리모듈(10)의 밀착방향을 기준으로 하여 후방측에 당김편(13)을 형성하여 구성할 수 있다.In the pulling mechanism 60 , a support bracket 21 having a support piece 22 is welded to the bottom of the housing 20 , and the support bracket 21 is supported on the fixing plate 12 of the battery module 10 . Corresponding to the piece 22 , it may be configured by forming the pulling piece 13 on the rear side based on the close contact direction of the battery module 10 .

따라서, 지지편(22)과 당김편(13)에 관통구멍을 형성하고, 볼트(55)와 너트(56)를 이용하여 당김편(13)을 지지편(22)쪽으로 당겨 체결하는 것에 의해 냉각판(30)의 고정구조를 더욱 견고하게 하고, 배터리모듈(10)을 냉각판(30)쪽으로 밀착시켜 배터리모듈(10)과 냉각판(30)의 밀착상태를 더욱 견고하게 유지하여 양호한 열교환 기능을 수행할 수 있도록 되어 있다.Accordingly, through holes are formed in the support piece 22 and the pull piece 13 , and the pull piece 13 is pulled toward the support piece 22 and tightened using the bolt 55 and the nut 56 , thereby cooling. A good heat exchange function by making the fixing structure of the plate 30 more robust, and keeping the battery module 10 in close contact with the cooling plate 30 to further firmly maintain the close contact between the battery module 10 and the cooling plate 30 is enabled to perform.

이러한 구성으로 이루어진 전기자동차용 배터리팩의 작용을 설명하면 다음과 같다. 도 1 및 도 2에서와 같이 배터리 사용으로 배터리모듈(10)에서 열이 발생하면, 냉각판(30)의 입구(30a)로 냉각수를 유입시켜 내부통로(31)로 흐르게 한 후, 출구(30b)로 배출시킴으로써 배터리모듈(10)과 냉각판(30) 사이에 열교환이 이루어져 배터리모듈(10)의 온도를 낮출 수 있다.The operation of the battery pack for an electric vehicle having such a configuration will be described as follows. As in FIGS. 1 and 2 , when heat is generated in the battery module 10 due to the use of a battery, cooling water is introduced into the inlet 30a of the cooling plate 30 to flow into the internal passage 31 , and then the outlet 30b ), heat exchange is made between the battery module 10 and the cooling plate 30 to lower the temperature of the battery module 10 .

즉, 배터리모듈(10)의 일측면은 열전도율이 높은 아크릴재질의 써멀패드(36)를 개재하여 냉각판(30)의 후면판(32)과 접촉되어 있고, 냉각판(30)은 열전도율이 높은 알루미늄 합금으로 제조된 것이므로, 배터리모듈(10)의 높은 열이 써멀패드(36)와 후면판(32)을 통해 내부통로(31)로 흐르는 냉각수로 전달되어 방출된다. 이로 인해 배터리모듈(10)의 온도를 낮출 수 있고, 배터리모듈(10)과 냉각판(30)의 접촉에 의한 수냉식이므로 외부공기를 사용하는 공냉식에 비하여 배터리모듈(10)의 냉각성능을 더욱 향상시킬 수 있다.That is, one side of the battery module 10 is in contact with the rear plate 32 of the cooling plate 30 via a thermal pad 36 made of an acrylic material having high thermal conductivity, and the cooling plate 30 has high thermal conductivity. Since it is made of an aluminum alloy, the high heat of the battery module 10 is transferred to the coolant flowing through the thermal pad 36 and the rear plate 32 to the internal passage 31 and is discharged. Due to this, the temperature of the battery module 10 can be lowered, and the cooling performance of the battery module 10 is further improved compared to the air cooling type using external air because it is a water cooling type by contacting the battery module 10 and the cooling plate 30 . can do it

또한 본 발명의 냉각판(30)은 전면판(33)에 다수 배치된 원형의 오목형상부(33a)에 의해 내부통로(31)의 일부를 막아 냉각수의 흐름시 와류를 형성할 수 있다. 이러한 와류 발생은 냉각수의 흐름을 지연시켜 충분히 열교환할 수 있는 시간을 확보할 수 있고, 다수의 오목형상부(33a)는 특정 패턴으로 배치되어 냉각수의 흐름을 냉각판(30) 전체에 걸쳐 균일하게 함으로써 열교환효율을 더욱 높일 수 있다. In addition, the cooling plate 30 of the present invention can form a vortex when the cooling water flows by blocking a part of the inner passage 31 by a plurality of circular concave-shaped portions 33a disposed on the front plate 33 . This vortex generation delays the flow of the cooling water to ensure sufficient time for heat exchange, and the plurality of concave portions 33a are arranged in a specific pattern to uniformly flow the cooling water over the entire cooling plate 30 . By doing so, the heat exchange efficiency can be further increased.

도 8의 (a) 및 (b)는 상기한 바와 같이 내부통로(31)에 다수의 오목형상부(33a)가 특정의 패턴으로 배치된 냉각판(30)과, 내부통로(31)가 직선형으로 형성된 냉각판(30A)의 냉각수 흐름분포도를 나타낸 것으로, (a)에서와 같이 특정패턴으로 배치된 다수의 오목형상부(33a)가 구비된 냉각판(30)은 (b)에서와 같은 직선형 통로를 가지는 냉각판(30A)에 비하여 냉각수의 흐름이 냉각판(30) 전체에 걸쳐 균일하게 분포됨을 실험을 통해 알 수 있었고, 이로써 냉각판(30)의 열교환 효율을 더욱 높일 수 있음을 확인하였다.8A and 8B show the cooling plate 30 in which a plurality of concave-shaped portions 33a are arranged in a specific pattern in the inner passage 31 as described above, and the inner passage 31 is straight. The cooling water flow distribution diagram of the cooling plate 30A formed by It was found through an experiment that the flow of cooling water was uniformly distributed over the entire cooling plate 30 as compared to the cooling plate 30A having a passage, and thus it was confirmed that the heat exchange efficiency of the cooling plate 30 could be further increased. .

다시 도 2를 참조하면, 본 발명의 냉각판(30)으로 유입되는 냉각수는 차량의 엔진을 냉각시키는 냉각수를 이용한 것으로, 차량에 구비된 냉각수탱크, 순환펌프, 라디에이터 등으로 이루어지는 냉각수 순환계통을 차량의 중앙처리장치(CPU)가 제어함으로써 배터리팩의 냉각판(30)으로 냉각수를 순환시킬 수 있다. Referring back to FIG. 2 , the coolant flowing into the cooling plate 30 of the present invention uses coolant for cooling the engine of the vehicle, and a coolant circulation system including a coolant tank, a circulation pump, a radiator, etc. The cooling water can be circulated to the cooling plate 30 of the battery pack by controlling the central processing unit (CPU) of the battery pack.

따라서, 배터리모듈(10)에 구비된 제1 온도센서(41)로부터 검출된 배터리모듈(10)의 온도정보와, 냉각판(30)의 입구(30a)에 구비된 제2 온도센서(42)로부터 검출된 냉각수의 온도정보를 온도관리시스템(43)이 차량의 중앙처리장치(CPU)로 보내게 되면, 차량의 중앙처리장치(CPU)는 배터리모듈(10)의 검출온도에 의거하여 냉각판(30)으로 공급되는 냉각수의 온도를 조절할 수 있어 배터리모듈(10)의 온도를 적절하게 제어 및 유지할 수 있다.Accordingly, the temperature information of the battery module 10 detected from the first temperature sensor 41 provided in the battery module 10 and the second temperature sensor 42 provided at the inlet 30a of the cooling plate 30 . When the temperature management system 43 sends the temperature information of the coolant detected from The temperature of the cooling water supplied to (30) can be adjusted, so that the temperature of the battery module (10) can be appropriately controlled and maintained.

또한 본 발명은 도 5 및 도 6에 도시된 바와 같이 냉각판(30)을 얇은 판상으로 구성하여 배터리모듈(10)과 하우징(20) 사이에 배치하고, 냉각판(30)의 상단 가장자리부를 따라 여러곳에서 양쪽의 하우징(20) 및 배터리모듈(10)의 고정플레이트(12)와 견고하게 고정하고, 냉각판(30)의 하단 가장자리부를 따라 여러곳에서 하우징(20)과 견고하게 고정한 것이므로, 하우징(20) 내의 협소한 공간내에서 배터리모듈(10), 하우징(20) 및 냉각판(30)의 상호간 결합구조를 최적화할 수 있고, 또한 하우징(20)의 내부 구성을 간소화하여 배터리팩의 전체 사이즈가 커지는 것을 방지할 수 있다.5 and 6, the cooling plate 30 is formed in a thin plate shape and disposed between the battery module 10 and the housing 20, and along the upper edge of the cooling plate 30 Since it is firmly fixed with the fixing plate 12 of the housing 20 and the battery module 10 on both sides in several places, and firmly fixed with the housing 20 in several places along the lower edge of the cooling plate 30, It is possible to optimize the mutual coupling structure of the battery module 10, the housing 20, and the cooling plate 30 within a narrow space within the housing 20, and also to simplify the internal configuration of the housing 20 so that the battery pack It is possible to prevent the overall size from increasing.

지금까지 설명된 실시예는 본 발명의 바람직한 실시예를 설명한 것에 불과하고, 본 발명의 권리범위는 설명된 실시예에 한정되는 것은 아니며, 본 발명의 기술적 사상과 청구범위 내에서 이 분야의 당업자에 의하여 다양한 변경, 변형 또는 치환이 가능할 것이며, 그와 같은 실시예들은 본 발명의 범위에 속하는 것으로 이해되어야 한다.The embodiments described so far are merely illustrative of preferred embodiments of the present invention, and the scope of the present invention is not limited to the described embodiments, and within the spirit and claims of the present invention, those skilled in the art can Various changes, modifications or substitutions will be possible by this, and it should be understood that such embodiments fall within the scope of the present invention.

10 : 배터리모듈 11 : 배터리셀
12 : 고정플레이트 20 : 하우징
30 : 냉각판 30a : 입구
30b : 출구 31 : 내부통로
32 : 후면판 33 : 전면판
34 : 테두리프레임 35 : 중앙프레임
36 : 써멀패드 41,42 : 제1 및 제2 온도센서
43 : 온도관리시스템 CPU : 차량의 중앙처리장치 10: battery module 11: battery cell
12: fixed plate 20: housing
30: cooling plate 30a: inlet
30b: exit 31: inner passage
32: rear panel 33: front panel
34: border frame 35: center frame
36: thermal pad 41, 42: first and second temperature sensors
43: temperature management system CPU: central processing unit of vehicle

Claims (6)

다수개의 배터리셀을 적층하여 양측면에서 고정플레이트로 고정하여 이루어진 배터리모듈;
상기 배터리모듈을 내부에 수용하기 위한 하우징; 및
상기 하우징과 배터리모듈 사이에 위치하여 배터리모듈의 적층된 배터리셀과 일측면이 접촉하도록 배치되고, 차량의 냉각수가 내부통로로 유입되는 입구와 배출되는 출구를 구비하여, 내부통로로 흐르는 냉각수에 의해 배터리모듈의 열을 낮추도록 된 냉각판을 포함하며,
상기 냉각판의 상단 가장자리부는 배터리모듈의 고정플레이트의 상단과 하우징의 상단에 고정하고, 상기 냉각판의 하단 가장자리부는 하우징의 하단에 고정하며,
상기 배터리모듈의 고정플레이트와 하우징 사이에는 배터리모듈을 냉각판쪽으로 이동시켜 배터리모듈이 냉각판의 후면판에 밀착되게 하는 당김기구가 구비되고,
상기 당김기구는, 상기 하우징 바닥에 지지편을 가지는 지지브라켓이 용접되고, 배터리모듈의 고정플레이트에는 상기 지지브라켓의 지지편에 대응하여 배터리모듈의 밀착방향을 기준으로 하여 후방측에 당김편을 형성하며,
상기 지지편과 당김편에 관통구멍을 형성하고, 볼트와 너트를 이용하여 당김편을 지지편쪽으로 당겨 체결함으로써 이루어진 것을 특징으로 하는 냉각 기능을 향상시킨 전기자동차용 배터리팩.a battery module formed by stacking a plurality of battery cells and fixing them with fixing plates on both sides;
a housing for accommodating the battery module therein; and
It is located between the housing and the battery module, is disposed so that one side of the stacked battery cells of the battery module comes into contact with each other, and has an inlet through which the vehicle's cooling water flows into the inner passage and an outlet at which it is discharged. It includes a cooling plate designed to lower the heat of the battery module,
The upper edge of the cooling plate is fixed to the upper end of the fixing plate of the battery module and the upper end of the housing, and the lower edge of the cooling plate is fixed to the lower end of the housing,
A pulling mechanism is provided between the fixing plate of the battery module and the housing to move the battery module toward the cooling plate so that the battery module is in close contact with the rear plate of the cooling plate,
In the pulling mechanism, a support bracket having a support piece is welded to the bottom of the housing, and a pull piece is formed on the fixing plate of the battery module in response to the support piece of the support bracket on the rear side based on the close contact direction of the battery module. and
A battery pack for an electric vehicle with improved cooling function, characterized in that it is formed by forming a through hole in the support piece and the pulling piece, and pulling the pulling piece toward the support piece by using a bolt and a nut to tighten it. 제 1 항에 있어서, 상기 배터리모듈에 구비되어 배터리모듈의 온도를 검출하기 위한 제1 온도센서;
냉각판의 입구에 구비되어 입구로 유입되는 냉각수의 온도를 검출하기 위한 제2 온도센서; 및
상기 제1 온도센서와 제2 온도센서로부터 검출된 배터리모듈과 냉각수의 온도정보를 차량의 중앙처리시스템(CPU)에 제공하기 위한 온도관리시스템을 더 포함하는 것을 특징으로 하는 냉각 기능을 향상시킨 전기자동차용 배터리팩.According to claim 1, wherein the first temperature sensor is provided in the battery module to detect the temperature of the battery module;
a second temperature sensor provided at the inlet of the cooling plate to detect the temperature of the cooling water flowing into the inlet; and
Electric with improved cooling function, characterized in that it further comprises a temperature management system for providing temperature information of the battery module and the coolant detected from the first temperature sensor and the second temperature sensor to the central processing system (CPU) of the vehicle. Car battery pack. 제 1 항에 있어서, 상기 냉각판은 배터리모듈의 배터리셀과 접촉하는 편평한 판상의 후면판; 상기 후면판과 소정틈새를 유지하여 배치되는 전면판; 및 상기 후면판과 전면판 사이의 가장자리부에 배치되어 후면판과 전면판 사이에 내부통로가 형성되도록 하는 테두리프레임을 포함하며,
상기 전면판에는 후면판과 끝단이 접촉하여 내부통로를 부분적으로 막아 냉각수의 흐름시 내부통로에서 와류를 발생시킴으로써 흐름이 지연되도록 하는 다수개의 오목형상부를 형성하고,
상기 후면판, 전면판 및 테두리프레임은 알루미늄 합금재질로 제작하여 브레이징 용접으로 상호 고정하는 것을 특징으로 하는 냉각 기능을 향상시킨 전기자동차용 배터리팩.According to claim 1, wherein the cooling plate is a flat plate-shaped rear plate in contact with the battery cells of the battery module; a front plate disposed to maintain a predetermined gap with the rear plate; and an edge frame disposed on an edge portion between the rear plate and the front plate to form an internal passage between the rear plate and the front plate,
A plurality of concave-shaped portions are formed on the front plate to delay the flow by generating a vortex in the internal passage when the coolant flows by partially blocking the inner passage by contacting the rear plate and the end,
The battery pack for an electric vehicle with improved cooling function, characterized in that the rear plate, the front plate and the frame frame are made of an aluminum alloy material and fixed to each other by brazing welding. 제 3 항에 있어서, 상기 후면판과 전면판 사이의 내부통로 중간에 배치되고 내부통로를 2분할하는 중앙프레임을 더 포함하며,
상기 중앙프레임은 알루미늄 합금재질로 제작되고, 후면판, 전면판 및 테두리프레임의 브레이징 용접시 함께 용접되어 고정되는 것을 특징으로 하는 냉각 기능을 향상시킨 전기자동차용 배터리팩.4. The method of claim 3, further comprising a central frame disposed in the middle of the inner passage between the rear plate and the front plate and dividing the inner passage into two,
The central frame is made of an aluminum alloy material, and is welded and fixed together during brazing welding of the rear plate, the front plate and the edge frame. 제 3 항에 있어서, 상기 냉각판의 후면판과 배터리모듈 사이에 개재하여 밀착시킨 접착력이 있는 아크릴재질의 써멀패드를 더 포함하는 것을 특징으로 하는 냉각 기능을 향상시킨 전기자동차용 배터리팩.The battery pack for an electric vehicle with an improved cooling function according to claim 3, further comprising a thermal pad made of an acrylic material having adhesive force interposed between the rear plate of the cooling plate and the battery module. 삭제delete
KR1020200045349A 2020-04-14 2020-04-14 Battery pack for electric vehicles with improved cooling performance KR102364202B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020200045349A KR102364202B1 (en) 2020-04-14 2020-04-14 Battery pack for electric vehicles with improved cooling performance
PCT/KR2020/006320 WO2021210717A1 (en) 2020-04-14 2020-05-14 Electric car battery pack having improved cooling performance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020200045349A KR102364202B1 (en) 2020-04-14 2020-04-14 Battery pack for electric vehicles with improved cooling performance

Publications (2)

Publication Number Publication Date
KR20210127465A KR20210127465A (en) 2021-10-22
KR102364202B1 true KR102364202B1 (en) 2022-02-17

Family

ID=78084935

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020200045349A KR102364202B1 (en) 2020-04-14 2020-04-14 Battery pack for electric vehicles with improved cooling performance

Country Status (2)

Country Link
KR (1) KR102364202B1 (en)
WO (1) WO2021210717A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114256532B (en) * 2021-11-30 2023-12-01 江铃汽车股份有限公司 Cooling plate support and battery pack
CN116487765B (en) * 2023-06-20 2023-09-26 宁波齐云新材料技术有限公司 High-integration multi-layer lithium battery pack water-cooling packaging plate and processing method thereof

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150105045A (en) * 2014-03-07 2015-09-16 현대모비스 주식회사 Heat-pipe assembly having heating and cooling function, battery module for eco-friendly vehicle using of the heat-pipe assembly, method for manufacturing of the heat-pipe assembly, method for manufacturing of the battery module, and method for operating of the battery module
KR102321512B1 (en) * 2014-09-11 2021-11-04 현대모비스 주식회사 Water-cooled battery cooling apparatus using water-cooled battery module
KR102082385B1 (en) * 2015-12-08 2020-02-27 주식회사 엘지화학 Cooling Member for Battery Module Comprising Member for Providing Coolant Flow Channels
KR102023716B1 (en) * 2016-03-03 2019-09-20 주식회사 엘지화학 Battery system for vehicle
KR102273195B1 (en) * 2017-12-27 2021-07-05 주식회사 엘지에너지솔루션 Battery module with improved cooling structure
KR102277035B1 (en) * 2018-03-21 2021-07-13 주식회사 엘지에너지솔루션 Battery module, battery pack comprising the battery module and vehicle comprising the battery pack
KR102643493B1 (en) * 2018-06-28 2024-03-04 현대자동차주식회사 Battery system for vehicle

Also Published As

Publication number Publication date
WO2021210717A1 (en) 2021-10-21
KR20210127465A (en) 2021-10-22

Similar Documents

Publication Publication Date Title
JP4440553B2 (en) Battery pack cooling device
US11749855B2 (en) Battery module and battery pack including the same
EP1641067B1 (en) System for controlling temperature of a secondary battery module
KR20070041064A (en) Heat exchanging system of battery pack using thermoelectric element
CN108886189B (en) Battery pack temperature control and power supply system
KR101471242B1 (en) Battery unit
KR102364202B1 (en) Battery pack for electric vehicles with improved cooling performance
KR101417411B1 (en) Battery for vehicle and vehicle comprising the same
US20100276120A1 (en) Temperature adjusting mechanism
KR20190138919A (en) Battery cooling device for vehicle
EP3923400A1 (en) Battery module assembly, battery pack, and device using battery as power source
JP2003331932A (en) Assembled battery and battery system
JP6931626B2 (en) Vehicle battery cooling structure
RU2791288C1 (en) Battery for electric vehicles with improved cooling performance
WO2021249272A1 (en) Battery pack and electric vehicle
KR102329210B1 (en) Thermal management system of electric vehicle battery module assembly
KR100683215B1 (en) Heater core unit for vehicles
EA046485B1 (en) BATTERY FOR ELECTRIC VEHICLES WITH IMPROVED COOLING CHARACTERISTICS
KR102399138B1 (en) Battery pack
KR102399137B1 (en) Battery pack
KR101283344B1 (en) Battery Module Containing Thermoelectric Film
JP2019169390A (en) Battery module
CN220306337U (en) Battery cell assembly and battery pack
CN113851770B (en) Battery pack and electric vehicle
JP2019135707A (en) Battery module

Legal Events

Date Code Title Description
E701 Decision to grant or registration of patent right
GRNT Written decision to grant