WO2012067359A2 - 냉매의 분배 균일성이 향상된 전지팩 - Google Patents
냉매의 분배 균일성이 향상된 전지팩 Download PDFInfo
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- WO2012067359A2 WO2012067359A2 PCT/KR2011/008269 KR2011008269W WO2012067359A2 WO 2012067359 A2 WO2012067359 A2 WO 2012067359A2 KR 2011008269 W KR2011008269 W KR 2011008269W WO 2012067359 A2 WO2012067359 A2 WO 2012067359A2
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- WIPO (PCT)
- Prior art keywords
- refrigerant
- battery module
- inlet
- unit cells
- battery pack
- Prior art date
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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
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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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
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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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
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
- H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
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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
- 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
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
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- 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
Definitions
- the present invention relates to a battery pack having improved uniformity of distribution of refrigerant, and more particularly, to a battery pack including a plurality of battery cells or unit cells, wherein the unit cells are spaced apart from each other in the width direction of the battery pack. It is arranged upright to form a single battery module layer, two or more battery module layers are built in the pack case in a stacked structure arranged in the height direction of the battery pack, the refrigerant inlet that the refrigerant flows into the two or more battery module layers at the same time And a battery pack including a structure of a refrigerant outlet through which the refrigerant passing through the unit cells is discharged.
- Secondary batteries capable of charging and discharging have been widely used as energy sources of wireless mobile devices. Secondary batteries are also attracting attention as a power source for electric vehicles (EVs) and hybrid electric vehicles (HEVs), which are proposed as a way to solve air pollution in conventional gasoline and diesel vehicles that use fossil fuels. .
- EVs electric vehicles
- HEVs hybrid electric vehicles
- One or two or four battery cells are used for small mobile devices, whereas medium and large battery modules, which are electrically connected to a plurality of battery cells, are used in medium and large devices such as automobiles due to the necessity of high output capacity.
- the medium-large battery module is preferably manufactured in a small size and weight
- the rectangular battery, the pouch-type battery, etc. which can be charged with high integration and have a small weight to capacity, are mainly used as battery cells of the medium-large battery module.
- a pouch-type battery using an aluminum laminate sheet or the like as an exterior member has attracted much attention in recent years due to advantages such as low weight, low manufacturing cost, and easy form deformation.
- the medium-large battery module In order for the medium-large battery module to provide the output and capacity required by a given device or device, it is necessary to electrically connect a plurality of battery cells in series or in series and in parallel, and to maintain a stable structure against external force.
- the battery cells constituting the medium-large battery module is composed of a secondary battery capable of charging and discharging, such a high output large capacity secondary battery generates a large amount of heat during the charging and discharging process. If this is not effectively removed, thermal buildup occurs and consequently accelerates the deterioration of the unit cell, and in some cases there is a risk of fire or explosion. Therefore, a vehicle battery pack that is a high output large capacity battery requires a cooling system for cooling the battery cells embedded therein.
- the performance degradation of some battery cells will cause the performance degradation of the entire battery pack. Since one of the main causes of such a performance non-uniformity is due to the cooling non-uniformity between the battery cells, there is a need for a structure capable of ensuring cooling uniformity during the flow of the refrigerant.
- the battery pack 20 is arranged upright in the width direction of the battery pack 20 to form one battery module 10 layer, and two battery module 10 layers are formed.
- the battery pack built in the pack case 15 may be used in a laminated structure arranged in the height direction of the battery pack 20.
- the coolant introduced from the coolant inlet 11 formed at the upper side cools the unit cells while sequentially passing through the flow path formed between the unit cells stacked in the longitudinal direction and is externally provided through the coolant discharge unit 12 formed at the lower part. To be discharged.
- this structure has a problem that it is difficult to uniformly cool between the battery cells because the temperature difference between the layers, the refrigerant flow path is longer and the differential pressure is generated.
- the present invention aims to solve the problems of the prior art as described above and the technical problems that have been requested from the past.
- An object of the present invention is to provide a battery pack having improved cooling efficiency by effectively removing heat generated from a unit cell by a uniform refrigerant supply and minimizing a differential pressure between unit cells to suppress performance degradation of the unit cell.
- Still another object of the present invention is to provide a battery pack having a structure having excellent design flexibility by easily changing a refrigerant passage according to a structure of a device to which the battery pack is applied.
- a battery pack according to the present invention for achieving this object is a battery pack including a plurality of electrically connected battery cells or unit modules ('unit cell'),
- Unit cells are arranged upright in the width direction (lateral direction) of the battery pack in a state spaced apart from each other to form a coolant flow path to form a single battery module layer, two or more battery module layers are the height direction of the battery pack Inside the pack case with a laminated structure arranged in the
- the refrigerant inlet is introduced into the two or more battery module layers at the same time, and the refrigerant discharge unit through which the refrigerant passing through the unit cells is discharged Doing.
- the battery pack according to the present invention includes a coolant inlet of a novel structure in which refrigerant is introduced at the same time into unit cells included in battery module layers stacked in a longitudinal direction, thereby effectively removing heat from the unit cells.
- the temperature variation of the unit cells between the battery module layers can be greatly reduced.
- the battery module layers may have a structure spaced apart from each other in a structure for preventing the refrigerant movement between the layers. Therefore, not only cooling is performed for each battery module layer, but also the partition between the incoming refrigerant and the discharged refrigerant is ensured, thereby further improving the cooling efficiency.
- the structure for preventing the movement of the refrigerant between the battery module layers may be achieved by, for example, a structure in which the refrigerant passage is formed only of the battery module layer.
- the coolant inlet and the coolant discharge part into which the coolant is simultaneously introduced into the battery module layers may be formed in various structures, and some preferred examples will be described below.
- the refrigerant inlet may have a structure in which the refrigerant flows into all the battery module layers and all the unit cells of each battery module layer.
- a coolant discharge part through which the coolant passing through the battery module layers is discharged is formed on the opposite side of the coolant inlet part, and the flow path direction at the coolant discharge part is opposite to the flow path direction of the coolant inlet part. It may be a phosphorus structure. Therefore, the refrigerant flows in one direction and does not circulate in all the unit cells of each battery module layer.
- the coolant inlet may preferably have a structure in which the cross-sectional width decreases with increasing distance from the coolant inlet duct.
- the "cross-sectional width decreases” means that the coolant inlet is inclined toward the opposite end of the coolant inlet duct.
- the flow cross-sectional area of the coolant is gradually reduced by the cross-sectional width that decreases away from the coolant inlet duct as defined above.
- the moving speed of the refrigerant gradually increases, but the flow rate of the refrigerant decreases, and a uniform amount is introduced for each battery module layer regardless of the distance from the refrigerant inlet duct.
- the temperature variation of the unit cells can be reduced to further improve its performance.
- the coolant inlet and / or coolant discharge may be branched into two or more in the longitudinal direction of the battery pack.
- the refrigerant inlet may include a plurality of unit cells (a) of the battery module layer (A) and some unit cells of the battery module layer (B) other than the battery module layer (A). It may have a structure including a first branch inlet which is introduced into the field (b1) at the same time, and a second branch inlet that is simultaneously introduced into the remaining unit cells (b2) of the battery module layer (B). That is, since the respective refrigerant branch inlets are formed in the battery module layer A and the battery module layer B to cool the unit cells, it is possible to further improve a uniform distribution effect of the refrigerant.
- the battery module layer (A) and the battery module layer (B) may each be composed of one or more battery module layers, this structure is more preferable for a battery pack consisting of a plurality of battery module layers.
- the coolant introduced from the first branch inlet and the second branch inlet may be a structure in which a coolant discharge unit is collected and discharged after passing through the unit cells.
- a flow path converting unit is located at a position facing the refrigerant inlet unit after the refrigerant flowing from the first branch inlet unit and the second branch inlet unit passes through the unit cells.
- a refrigerant discharge unit may be disposed between the second branch inlets, and the coolant may be discharged through the refrigerant discharge unit via a space between the battery module layer A and the battery module layer B. . That is, the coolant inlet and the coolant outlet are located together at one side of the battery pack, and the coolant flows from the flow path conversion part to the coolant discharge part by using a space between the battery module layers.
- Such a structure is excellent in design flexibility since the position of the refrigerant inlet and the refrigerant outlet may be changed according to the structure of the device applied to the battery pack.
- the refrigerant inlet is a first branch inlet through which refrigerant is introduced into some unit cells (a1) of at least two battery module layers, and a second is introduced into some unit cells (a2) of the battery module layers.
- a refrigerant inlet including a branch inlet, and a refrigerant outlet through which the refrigerant passing through the remaining unit cells (a3) of the battery module layers is positioned between the first branch inlet and the second site inlet.
- the refrigerant flows from the first branch inlet and the second branch inlet and passes through the unit cells a1 and a2 to move to the refrigerant discharge unit through the unit cell a3.
- It may be a structure in which the flow path conversion unit is located.
- a partition wall may be formed in the flow path converting unit so as to move to the unit cells a3 without mixing the refrigerant derived from the first branch inlet and the refrigerant derived from the second branch inlet.
- the branch inlet of the battery module layer adjacent to the refrigerant inlet duct among the battery module layers may have a greater vertical cross-sectional area of the refrigerant passage than that of the branch inlets of the remaining battery module layers.
- the size of the vertical cross-sectional area of the branch inlet may be variously formed according to the flow rate and flow of the coolant.
- the coolant outlet of the battery module layer adjacent to the coolant inlet duct among the battery module layers is the remaining battery module layer. Since the vertical cross-sectional area of the coolant flow path is larger than that of the coolant discharge part, the flow rate of the coolant flowing into the unit cells for each battery module layer may be more uniform.
- the refrigerant inlet includes a branch inlet through which refrigerant is introduced into some unit cells a1 of the two or more battery module layers.
- a first branch outlet portion passing through some unit cells a2 of the battery module layers and a second branch outlet portion passing through the remaining unit cells a3 of the battery module layers are located.
- the refrigerant flowing from the branch inlet and passing through the unit cells a1 may move to the first branch outlet and the second branch outlet through the unit cells a2 and a3, respectively.
- the flow path converter for providing the coolant flow path may be located.
- a partition wall may be formed in the flow path converting unit so that the coolant derived from the coolant inlet may be divided into the unit cells a2 and the unit cells a3.
- Such a structure is also excellent in design flexibility, since the position of the coolant inlet and the coolant outlet can be adjusted according to the structure of the device applied to the battery pack.
- the branch inlet of the battery module layer adjacent to the refrigerant inlet duct among the battery module layers may have a structure in which a vertical cross-sectional area of the refrigerant passage is larger than that of the branch inlets of the remaining battery module layers.
- the coolant discharge part of the battery module layer may have a structure in which a vertical cross-sectional area of the coolant flow path is larger than the coolant discharge parts of the remaining battery module layers.
- the refrigerant inlet may be formed in a space between the front surface of the pack case and the front surface of the battery module layers, and the front surface of the pack case may have a structure including two or more continuous inclined surfaces.
- the front surface of the pack case in the refrigerant inlet may have a structure in which the distance from the front surface of the battery module layers is continuously reduced in the direction of the opposite end of the refrigerant inlet.
- the refrigerant flowing through the refrigerant inlet passes through a continuous slope and branches to the battery module layer to reach the opposite end of the refrigerant inlet duct while maintaining the flow rate. All of the battery module layers located at a long distance may be cooled uniformly.
- the present invention may also be an electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, or a power storage device, which uses the battery pack as a power source.
- a structure in which the battery pack is mounted on the trunk of the vehicle is more preferable.
- Electric vehicles using a battery pack as a power source hybrid electric vehicles, plug-in hybrid electric vehicles, power storage devices and the like are known in the art, detailed description thereof will be omitted.
- FIG. 1 is a side schematic view of a medium-large battery pack according to the prior art
- 2 to 3 are embodiments of a battery pack according to the present invention.
- FIG. 4 to 9 illustrate embodiments of a battery pack in which a coolant inlet and / or a coolant outlet are branched into two or more in the longitudinal direction of the battery pack.
- FIG. 2 is a perspective view schematically showing one exemplary battery pack of the present invention.
- the battery pack 200 is one battery module arranged upright in the width direction of the battery pack 200 in a state in which the unit cells 101 are spaced apart from each other so as to form the refrigerant passage 105.
- a layer 100 is formed, and four battery module layers 100 are embedded in the pack case 150 in a stacked structure arranged in the height direction of the battery pack 200.
- the battery module layers 100 are spaced apart from each other in a structure for preventing refrigerant movement between the layers.
- the refrigerant inlet 110 has a structure in which the refrigerant flows into all the battery module layers 100 and all the unit cells 101 of each battery module layer, and the refrigerant passing through the battery module layers 100 is discharged.
- the coolant discharge part 120 is formed on the opposite side of the coolant inlet part 110, and the flow path direction (see the solid arrow) in the coolant discharge part 120 is the flow path direction of the coolant inlet part 110 (dotted arrow). It is formed in the structure opposite to the reference.
- FIG. 3 is a perspective view schematically showing another exemplary battery pack of the present invention.
- the coolant inlet 111 of the battery pack 201 has a structure in which a cross-sectional width decreases according to a distance from a coolant inlet duct (not shown), and the coolant outlet 121 Since the flow path direction (refer to a solid arrow) of the flow path and the flow path direction (refer to the dotted arrow) of the refrigerant inlet portion 111 are the same structure, the detailed description thereof will be omitted.
- FIG. 4 to 9 schematically illustrate perspective views of a battery pack in which a coolant inlet and / or a coolant outlet are branched into two or more numbers in the longitudinal direction of the battery pack.
- the refrigerant inlet of the battery pack 202 includes a first branch inlet 112a and a second branch inlet 112b, and the battery module layer A (100A) and the battery module layer B (100B) is composed of two battery module layers, respectively.
- the first branch inlet 112a has a refrigerant unit unit cells 101b1 of the battery module layer 100B other than the entire unit cells 101a of the battery module layer 100A and the battery module layer 100A.
- the second branch inlet 112b is simultaneously introduced into the remaining unit cells 101b2 of the battery module layer 100B.
- the coolant introduced from the first branch inlet 112a and the second branch inlet 112b is disposed at the position opposite to the coolant inlet 112 and passes through the unit cells. 122) is formed.
- the refrigerant introduced from the first branch inlet 113a and the second branch inlet 113b is located at a position opposite to the refrigerant inlet of the battery pack 203.
- the flow path conversion unit 130 After passing through the plurality of channels, the flow path conversion unit 130 is positioned, and the refrigerant discharge unit 123 is positioned between the first branch inlet 113a and the second branch inlet 113b. Therefore, the refrigerant of the flow path conversion unit 130 is discharged through the refrigerant discharge part 123 via the space 140 between the battery module layer 100A and the battery module layer 100B.
- the refrigerant inlet of the battery pack 204 includes a first branch inlet 114a and battery module layers in which refrigerant is introduced into some unit cells 101a1 of the three battery module layers 100.
- the battery module layers 100 are positioned between the second branch inlet 114b and the first branch inlet 114a and the second site inlet 114b that flow into some unit cells 101a2 of the apparatus 100.
- a refrigerant discharge part 124 through which the refrigerant passing through the remaining unit cells 101a3 is discharged.
- the coolant flowing from the first branch inlet 114a and the second branch inlet 114b and passing through the unit cells 101a1 and 101a2 is located at a position opposite to the coolant inlet.
- a flow path converter 130 providing a coolant flow path that may move to the coolant discharge part 124 is located.
- the flow path conversion unit 130 includes a partition wall so that the refrigerant derived from the first branch inlet 114a and the refrigerant derived from the second branch inlet 114b are not mixed with each other to move to the unit cells 101a3. Not shown) is formed.
- the branch inlet 115A of the battery module layer adjacent to the refrigerant inlet duct (not shown) among the battery module layers 100 of the battery pack 205 is the remaining battery module layer.
- the vertical cross-sectional area of the coolant flow path is formed to be larger than that of the branch inlet 115B of the field.
- the coolant outlet 125A of the battery module layer adjacent to the coolant inlet duct is larger than the coolant outlet 125B of the remaining battery module layers. Except for the fact that the vertical cross-sectional area of the refrigerant passage is large, the description thereof will be omitted because it is the same as that of FIG.
- the refrigerant inlet duct means a duct for supplying the refrigerant to the refrigerant inlet, it is located on the branch inlet 115A in the drawing.
- the refrigerant inlet of the battery pack 206 includes a branch inlet 116a through which refrigerant is introduced into some unit cells 101a1 of the three battery module layers 100.
- the refrigerant passes through the first branch discharge part 126a passing through some unit cells 101a2 of the battery module layers 100 and a second passing through the remaining unit cells 101a3 of the battery module layers.
- the branch discharge part 126b is located, and the refrigerant flowing from the branch inlet part 116a and passing through the unit cells 101a1 passes through the unit cells 101a2 and 101a3 at a position facing the refrigerant inlet part.
- a flow path converting unit 130 is provided to provide a refrigerant flow path that can move to the branch discharge part 126a and the second branch discharge part 126b, respectively.
- a partition wall (not shown) is formed so that the coolant derived from the coolant inlet 116 may be divided into the unit cells 101a2 and the unit cells 101a3.
- the branch inlet 117A of the battery module layer adjacent to the refrigerant inlet duct (not shown) among the battery module layers 100 is branched inlet of the remaining battery module layers 100.
- the vertical cross-sectional area of the refrigerant passage is greater than that of the portion 117B, and the vertical cross-sectional area of the refrigerant passage 127A of the battery module 100 layer adjacent to the refrigerant inlet duct is greater than that of the remaining battery module layers. Except for greatly formed points, the description is the same as in FIG. 6, and thus detailed description thereof will be omitted.
- the battery pack may be formed in a structure corresponding to the structure of the device to which the coolant inlet and the coolant discharge part in which the coolant is simultaneously introduced into the battery module layers and to which the battery pack is applied, and are stacked in the longitudinal direction.
- the unit cells included in the battery module layers include a refrigerant inlet portion at which the refrigerant is introduced at the same time and the refrigerant discharge portion is discharged after removing the heat to be generated in the unit cell, to effectively remove the heat of the unit cells and the temperature deviation Can be greatly reduced.
- the battery pack according to the present invention has a structure capable of simultaneously cooling the unit cells located in the battery module layers, to uniformly supply the refrigerant to each unit cell, and the temperature difference between the unit cells in the cooling process and Differential pressure can be minimized.
- the battery pack according to the present invention is easy to change the refrigerant passage according to the structure of the device to which it is applied, it is excellent in design flexibility.
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Abstract
Description
Claims (21)
- 전기적으로 연결된 다수의 전지셀 또는 단위모듈('단위셀')들을 포함하는 전지팩으로서,단위셀들이 냉매 유로를 형성할 수 있도록 상호 이격된 상태로 전지팩의 폭 방향(횡 방향)으로 직립 배열되어 하나의 전지모듈 층을 이루고 있고, 둘 이상의 전지모듈 층들이 전지팩의 높이 방향(종 방향)으로 배열된 적층 구조로 팩 케이스에 내장되어 있으며,둘 이상의 전지모듈 층들에 위치한 일부 또는 전체 단위셀들을 동시에 냉각시킬 수 있도록, 냉매가 둘 이상의 전지모듈 층들에 동시에 유입되는 냉매 유입부와, 단위셀들을 통과한 냉매가 배출되는 냉매 배출부의 구조를 포함하고 있는 것을 특징으로 하는 전지팩.
- 제 1 항에 있어서, 상기 전지모듈 층들 사이는 층들 간의 냉매 이동을 방지하기 위한 구조로 상호 이격되어 있는 것을 특징으로 하는 전지팩.
- 제 1 항에 있어서, 상기 냉매 유입부는 냉매가 모든 전지모듈 층들과 각각의 전지모듈 층의 모든 단위셀들에 유입되는 구조로 이루어진 것을 특징으로 하는 전지팩.
- 제 3 항에 있어서, 상기 전지모듈 층들을 통과한 냉매가 배출되는 냉매 배출부가 냉매 유입부의 대향측에 형성되어 있고, 상기 냉매 배출부에서의 유로 방향은 냉매 유입부의 유로 방향과 반대인 구조인 것을 특징으로 하는 전지팩.
- 제 3 항에 있어서, 상기 냉매 유입부는 냉매 유입 덕트로부터 거리에 따라 단면 폭이 감소하는 구조로 이루어진 것을 특징으로 하는 전지팩.
- 제 1 항에 있어서, 상기 냉매 유입부 및/또는 냉매 배출부는 전지팩의 종 방향으로 둘 이상의 개수로 분지되어 있는 것을 특징으로 하는 전지팩.
- 제 6 항에 있어서, 상기 냉매 유입부는 냉매가 일부 전지모듈 층(A)의 전체 단위셀들(a)과 상기 전지모듈 층(A) 이외의 전지모듈 층(B)의 일부 단위셀들(b1)로 동시에 유입되는 제 1 분지 유입부와, 상기 전지모듈 층(B)의 나머지 단위셀들(b2)로 동시에 유입되는 제 2 분지 유입부를 포함하고 있는 것을 특징으로 하는 전지팩.
- 제 7 항에 있어서, 상기 전지모듈 층(A)과 전지모듈 층(B)는 각각 하나 또는 둘 이상의 전지모듈 층들로 이루어진 것을 특징으로 하는 전지팩.
- 제 7 항에 있어서, 상기 냉매 유입부에 대향하는 위치에는 제 1 분지 유입부 및 제 2 분지 유입부로부터 유입된 냉매가 단위셀들을 통과한 후 모아져 배출되는 하나의 냉매 배출부가 형성되어 있는 것을 특징으로 하는 전지팩.
- 제 7 항에 있어서, 상기 냉매 유입부에 대향하는 위치에는 제 1 분지 유입부 및 제 2 분지 유입부로부터 유입된 냉매가 단위셀들을 통과한 후 모이는 유로 변환부가 위치하고, 상기 제 1 분지 유입부와 제 2 분지 유입부 사이에는 냉매 배출부가 위치하며, 상기 유로 변환부의 냉매는 전지모듈 층(A)과 전지모듈 층(B) 사이의 이격 공간을 경유하여 상기 냉매 배출부를 통해 배출되는 것을 특징으로 하는 전지팩.
- 제 6 항에 있어서,상기 냉매 유입부는 냉매가 둘 이상의 전지모듈 층의 일부 단위셀들(a1)로 유입되는 제 1 분지 유입부, 및 상기 전지모듈 층들의 일부 단위셀들(a2)로 유입되는 제 2 분지 유입부를 포함하고 있고,상기 제 1 분지 유입부와 제 2 부지 유입부 사이에는 상기 전지모듈 층들의 나머지 단위셀들(a3)을 통과한 냉매가 배출되는 냉매 배출부가 위치하며,상기 냉매 유입부에 대향하는 위치에는 제 1 분지 유입부 및 제 2 분지 유입부로부터 유입되어 단위셀들(a1, a2)을 통과한 냉매가 단위셀(a3)를 거쳐 상기 냉매 배출부로 이동할 수 있는 냉매 유로를 제공하는 유로 변환부가 위치하는 것을 특징으로 하는 전지팩.
- 제 11 항에 있어서, 상기 유로 변환부에는 제 1 분지 유입부로부터 유래된 냉매와 제 2 분지 유입부로부터 유래된 냉매가 혼합되지 않은 상태로 단위셀들(a3)으로 이동할 수 있도록 격벽이 형성되어 있는 것을 특징으로 하는 전지팩.
- 제 11 항에 있어서, 상기 전지모듈 층들 중에서 냉매 유입 덕트에 인접한 전지모듈 층의 분지 유입부는 나머지 전지모듈 층들의 분지 유입부보다 냉매 유로의 수직 단면적이 큰 것을 특징으로 하는 전지팩.
- 제 11 항에 있어서, 상기 전지모듈 층들 중에서 냉매 유입 덕트에 인접한 전지모듈 층의 냉매 배출부는 나머지 전지모듈 층들의 냉매 배출부보다 냉매 유로의 수직 단면적이 큰 것을 특징으로 하는 전지팩.
- 제 6 항에 있어서,상기 냉매 유입부는 냉매가 둘 이상의 전지모듈 층들의 일부 단위셀들(a1)로 유입되는 분지 유입부를 포함하고 있고,상기 분지 유입부의 양측에는 상기 전지모듈 층들의 일부 단위셀들(a2)을 통과하는 제 1 분지 배출부와, 상기 전지모듈 층들의 나머지 단위셀들(a3)을 통과하는 제 2 분지 배출부가 위치하며,상기 냉매 유입부에 대향하는 위치에는 분지 유입부로부터 유입되어 단위셀들(a1)을 통과한 냉매가 단위셀들(a2, a3)을 거쳐 제 1 분지 배출부와 제 2 분지 배출부로 각각 이동할 수 있는 냉매 유로를 제공하는 유로 변환부가 위치하는 것을 특징으로 하는 전지팩.
- 제 15 항에 있어서, 상기 유로 변환부에는 냉매 유입부로부터 유래된 냉매가 단위셀들(a2)과 단위셀들(a3)로 나뉘어 이동할 수 있도록 격벽이 형성되어 있는 것을 특징으로 하는 전지팩.
- 제 15 항에 있어서, 상기 전지모듈 층들 중에서 냉매 유입 덕트에 인접한 전지모듈 층의 분지 유입부는 나머지 전지모듈 층들의 분지 유입부보다 냉매 유로의 수직 단면적이 큰 것을 특징으로 하는 전지팩.
- 제 15 항에 있어서, 상기 전지모듈 층들 중에서 냉매 유입 덕트에 인접한 전지모듈 층의 냉매 배출부는 나머지 전지모듈 층들의 냉매 배출부보다 냉매 유로의 수직 단면적이 큰 것을 특징으로 하는 전지팩.
- 제 1 항에 있어서, 상기 냉매 유입부는 팩 케이스의 전면과 전지모듈 층들의 전면 사이의 공간에 형성되어 있고, 상기 팩 케이스의 전면은 둘 또는 그 이상의 연속적인 경사면을 포함하는 구조로 이루어진 것을 특징으로 하는 전지팩.
- 제 1 항에 따른 전지팩을 전원으로 사용하는 것을 특징으로 하는 전기자동차, 하이브리드 전기자동차, 플러그-인 하이브리드 전기자동차, 또는 전력저장 장치.
- 제 1 항에 따른 전지팩을 전원으로 사용하고 상기 전지팩이 차량의 트렁크에 장착되는 것을 특징으로 하는 전기자동차, 하이브리드 전기자동차, 또는 플러그-인 하이브리드 전기자동차.
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CN201180050295.8A CN103168388B (zh) | 2010-11-17 | 2011-11-02 | 提供改进的冷却剂分布均匀性的电池组 |
JP2013539743A JP5777724B2 (ja) | 2010-11-17 | 2011-11-02 | 冷媒分配における均一性を改善した電池パック |
US13/878,522 US9203124B2 (en) | 2010-11-17 | 2011-11-02 | Battery pack providing improved distribution uniformity of coolant |
EP11841047.1A EP2642584B1 (en) | 2010-11-17 | 2011-11-02 | Battery pack having improved uniformity in the distribution of refrigerant |
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US9203124B2 (en) | 2015-12-01 |
CN103168388B (zh) | 2015-06-17 |
JP5989746B2 (ja) | 2016-09-07 |
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CN103168388A (zh) | 2013-06-19 |
JP5777724B2 (ja) | 2015-09-09 |
KR20120053135A (ko) | 2012-05-25 |
EP2642584A4 (en) | 2014-10-01 |
JP2014500590A (ja) | 2014-01-09 |
JP2015072924A (ja) | 2015-04-16 |
WO2012067359A3 (ko) | 2012-07-26 |
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US20130280566A1 (en) | 2013-10-24 |
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