WO2021251624A1 - 배터리 모듈 및 그의 제조방법 - Google Patents
배터리 모듈 및 그의 제조방법 Download PDFInfo
- Publication number
- WO2021251624A1 WO2021251624A1 PCT/KR2021/005531 KR2021005531W WO2021251624A1 WO 2021251624 A1 WO2021251624 A1 WO 2021251624A1 KR 2021005531 W KR2021005531 W KR 2021005531W WO 2021251624 A1 WO2021251624 A1 WO 2021251624A1
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- WIPO (PCT)
- Prior art keywords
- battery
- battery cell
- heat transfer
- accommodating groove
- cover plate
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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
- H01M10/617—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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
-
- 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
- H01M10/04—Construction or manufacture in general
-
- 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
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/647—Prismatic or flat cells, e.g. pouch 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/651—Means for temperature control structurally associated with the cells characterised by parameters specified by a numeric value or mathematical formula, e.g. ratios, sizes or concentrations
- H01M10/652—Means for temperature control structurally associated with the cells characterised by parameters specified by a numeric value or mathematical formula, e.g. ratios, sizes or concentrations characterised by gradients
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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
- H01M10/653—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
- H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
-
- 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
-
- 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
- H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch 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
- 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
- H01M10/6553—Terminals or leads
-
- 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 module and a method for manufacturing the same, and more particularly, to a battery module in which heat dissipation of a battery cell is increased and a temperature deviation is reduced, and a method of manufacturing the same.
- a secondary battery refers to a battery capable of charging and discharging unlike a primary battery that cannot be charged, and these secondary batteries are widely used in phones, notebook computers, camcorders, power storage devices, electric vehicles, and the like.
- the secondary battery is classified into a can-type secondary battery in which an electrode assembly is embedded in a metal can and a pouch-type secondary battery in which an electrode assembly is embedded in a pouch, wherein the pouch-type secondary battery is an electrode assembly in which electrodes and separators are alternately stacked; and a pouch for accommodating the electrode assembly.
- the battery pack includes a battery module including a plurality of battery cells, and the plurality of battery cells are connected in series or parallel to increase capacity and output.
- the above-described battery module generates more heat as the capacity and output increase, and accordingly, if the heat generated from the battery module is not smoothly discharged to the outside, deterioration, ignition, and explosion of the battery module may occur.
- an object of the present invention is to provide a battery module capable of reducing temperature deviation of the entire battery module and a method for manufacturing the same.
- a battery module of the present invention for achieving the above object includes a plurality of battery cells overlappingly arranged in a thickness direction; a battery case accommodating the battery cells and having an open bottom structure; and a cover plate coupled to a lower portion of the battery case to support the battery cells, and a heat dissipation member provided on one surface of the cover plate on which the battery cells are supported and provided with a heat sink for dissipating heat generated in the battery cells.
- the heat sink includes a first heat transfer material provided to be connected in the longitudinal direction of the battery cell to the center of one surface of the cover plate, and a first heat transfer material provided on both sides of the first heat transfer material, respectively, in the longitudinal direction of the battery cell a second heat transfer material having a structure arranged in a plurality of rows along This can be gradually narrowed.
- the cover plate is provided on both sides of a first accommodating groove provided in the center of one surface and having a structure connected in the longitudinal direction of the battery cell, and the first accommodating groove in the thickness direction of the battery cell, and is provided at the center of the battery cell.
- a second accommodating groove having a structure in which the spacing is gradually narrowed toward both ends, the first accommodating groove is provided with a first heat transfer material, and the second heat transfer material is provided in the second accommodating groove can
- the first accommodating groove and the second accommodating groove may be formed to be connected, and the first and second heat transfer materials may be integrally connected.
- An insulating member having insulating properties may be provided on one surface of the cover plate except for the first and second accommodating grooves.
- a pair of heat dissipation pads may be provided at both ends of the inner surface of the battery case to reduce a temperature difference between the center and both ends of the battery cell by dissipating heat generated from both ends of the battery cell.
- a finishing pad for closing the space between the pair of heat dissipation pads may be provided on the inner surface of the battery case between the pair of heat dissipation pads.
- the first receiving groove is provided to gradually increase in depth from the center to both ends of the battery cell, and the thickness of the first heat transfer material provided in the first receiving groove is gradually increased from the center to both ends of the battery cell. It can be provided to increase.
- the thickness of the battery cell may be gradually increased from the center to both ends of the battery cell.
- the battery module manufacturing method of the present invention includes the disposing step of arranging a plurality of battery cells to overlap in the thickness direction; An accommodating step of accommodating a plurality of battery cells overlapping the inside of the battery case having an open lower portion; A preparation step of preparing a heat dissipation member including a cover plate and a heat sink provided on one surface of the cover plate on which the battery cells are supported;
- the preparatory step includes a preparatory step of preparing a cover plate, one surface of the cover plate A molding process of forming the first accommodating groove and the second accommodating groove by pressing with a press, and injecting a heat transfer solution into the first accommodating groove and the second accommodating groove to manufacture a heat sink, wherein the heat sink is the first and an injection process including a first heat transfer material formed in the receiving groove and a second heat transfer material formed in the second receiving groove, wherein the first receiving groove is located in the center of one surface of the cover plate in the forming process It is formed to be connected in the longitudinal direction of the cell, and the second accommodating groove is provided on both sides of the first accommodating groove and is formed in a structure arranged in a plurality of rows in the longitudinal direction of the battery cell, and the second accommodating groove is It is formed on one surface of the cover plate so that the gap is gradually narrowed
- first accommodating groove and the second accommodating groove are connected to each other, and in the injection process, as the first accommodating groove and the second accommodating groove are connected, the first heat transfer material and the second heat transfer material are integrally formed. Connected heat sinks can be manufactured.
- an attachment process of attaching an insulating member having insulation to one surface of the cover plate excluding the first and second accommodation grooves may be further included.
- the receiving step may further include attaching heat dissipation pads having heat dissipation properties to both ends of the battery case corresponding to both ends of the battery cell.
- the receiving step may further include a step of attaching a finishing pad to the inner surface of the battery case between the heat dissipation pads.
- the battery module of the present invention includes a plurality of battery cells, a battery case, and a heat dissipation member having a cover plate and a heat sink, wherein the heat sink includes a first heat transfer material and a plurality of rows of second heat transfer materials have Due to such a characteristic, heat generated in the battery cell may be smoothly discharged to the outside through the first and second heat transfer materials, and accordingly, the temperature increase of the battery module may be significantly suppressed.
- the second heat transfer material is characterized in that the gap is gradually narrowed from the center to both ends of the battery cell. Due to this characteristic, it is possible to gradually increase the heat dissipation from the center to both ends of the battery cell, and accordingly, the temperature deviation from the center to both ends of the battery cell can be reduced, and as a result, the performance of the battery module can be greatly improved. can be raised
- the cover plate includes a first accommodating groove and a second accommodating groove formed in an intaglio, wherein the first heat transfer material is provided in the first accommodation groove, and the second heat transfer material is a second It is characterized in that it is provided in the receiving groove. Due to these characteristics, the first and second heat transfer materials may be effectively provided.
- the battery module of the present invention it is characterized in that an insulating member having insulation is provided on one surface of the cover plate except for the first and second accommodating grooves. Due to such a feature, it is possible to prevent in advance the occurrence of a short circuit due to the contact between the battery cell and the cover plate, and as a result, safety can be improved.
- the first accommodating groove is characterized in that the depth gradually increases from the center to both ends of the battery cell, and due to this characteristic, the first heat transfer material provided in the first accommodating groove may be provided to increase in height from the center to both ends of the battery cell, thereby greatly increasing the heat dissipation of both ends compared to the center of the battery cell, and as a result, the temperature deviation of the entire battery cell can be reduced. have.
- the second accommodating groove is characterized in that the depth gradually increases from the center to both ends of the battery cell, and due to such a feature, the second heat transfer material provided in the second accommodating groove may be provided to increase in height from the center to both ends of the battery cell, thereby greatly increasing the heat dissipation of both ends compared to the center of the battery cell, and as a result, the temperature deviation of the entire battery cell can be reduced. have.
- a pair of heat dissipation pads are provided at both ends of the inner surface of the battery case, respectively. Due to such a characteristic, heat dissipation at both ends of the upper portion of the battery cell may be greatly increased, and accordingly, the temperature deviation of the entire battery cell may be greatly reduced.
- FIG. 1 is a perspective view showing a battery module according to a first embodiment of the present invention.
- FIG. 2 is a cross-sectional view showing a battery module according to a first embodiment of the present invention.
- Figure 3 is a perspective view showing a heat dissipation member of the battery module according to the first embodiment of the present invention.
- Figure 4 is a plan view showing a heat dissipation member of the battery module according to the first embodiment of the present invention.
- FIG. 5 is a cross-sectional view taken along line A-A in FIG.
- FIG. 6 is a cross-sectional view taken along line B-B shown in FIG.
- FIG. 7 is a cross-sectional view taken along line C-C shown in FIG.
- FIG. 8 is a perspective view illustrating a heat dissipation pad and a finishing pad in the battery module according to the first embodiment of the present invention.
- FIG. 9 is a flowchart illustrating a method of manufacturing a battery module according to a first embodiment of the present invention.
- 10 to 13 are process diagrams showing the preparation steps of the battery module manufacturing method according to the first embodiment of the present invention.
- FIG. 14 is a cross-sectional view illustrating a heat dissipation member of a battery module according to a second embodiment of the present invention.
- FIG. 15 is a cross-sectional view illustrating a heat dissipation member of a battery module according to a third embodiment of the present invention.
- the battery module 100 improves the heat dissipation structure of the battery cell to increase the heat dissipation property of the battery cell and reduce the temperature deviation of the entire battery cell, the thickness A plurality of battery cells 110 overlapping in the direction, a battery case 120 accommodating the battery cells 110 but having an open bottom structure, and coupled to a lower portion of the battery case 120 and the battery
- the case 120 includes a heat dissipation member 130 that radiates heat generated from the plurality of battery cells 110 accommodated in the case 120 to the outside.
- the battery module 100 has been described as one embodiment that the heat dissipation member is coupled to the lower portion of the battery case. It may be provided in the department.
- the battery cell 110 includes an electrode assembly, an electrode lead connected to the electrode assembly, and a pouch case accommodating the electrode assembly with the tip of the electrode lead drawn out to the outside.
- a plurality of battery cells 110 having such a configuration are disposed to overlap in a thickness direction, and a plurality of battery cells 110 disposed in a thickness direction have a structure connected in series or in parallel.
- the battery case 120 is for accommodating a plurality of battery cells, has a rectangular box shape with an opening at the bottom, and accommodates a plurality of overlapping battery cells 110 inside the battery case 120 through the opening.
- the battery cell 110 is accommodated in the battery case 120 in an upright state with the electrode lead facing the longitudinal end of the battery case 120 .
- the heat dissipating member 130 includes a cover plate 131 supporting the battery cell 110 accommodated in the battery case 120 and a heat dissipating body 132 dissipating heat generated in the battery cell 110 to the outside. do.
- the cover plate 131 closes the lower part of the battery case 120 while being coupled to the lower part of the battery case 120 , and supports the lower part of the battery cell 110 accommodated in the battery case 120 to the outside. prevent withdrawal.
- the cover plate 131 is formed of a heat dissipation material so that the heat of the battery cell transferred from the heat sink can be smoothly discharged to the outside.
- the heat sink 132 is provided on one surface of the cover plate 131 on which the battery cell 110 is supported, absorbs heat generated in the battery cell 110, and then discharges it to the outside, and thus the battery cell ( 110) can be effectively dissipated.
- the heat sink 132 includes a first heat transfer material 132a provided to be connected to the center of one surface of the cover plate 131 in the longitudinal direction (left and right direction of the cover plate when viewed in FIG. 4) of the battery cell; It is provided on both sides of the first heat transfer material 132a (the upper and lower portions of the first heat transfer material when viewed in FIG. 4 ), and a plurality of batteries are provided along the longitudinal direction of the battery cell (the left and right direction of the cover plate as viewed in FIG. 4 ). and a second heat transfer material 132b having a structure arranged in a column.
- first and second heat transfer materials 132a and 132b may be formed of a contact thermal interface material (TIM) and may have adhesive properties.
- TIM contact thermal interface material
- at least one of a heat dissipation grease, a heat conductive adhesive, and a phase change material may be used.
- the heat sink 132 having such a configuration can apply heat to the center of the overlapping battery cells 110 in which a lot of heat is generated, and the heat generation of both sides of the overlapping battery cells 110 in which heat is generated less than the center can be applied differently. , thereby increasing the heat dissipation property of the battery cell 110 and reducing the temperature deviation between the center and both sides of the battery cell 110 .
- the present invention has an arrangement structure of the second heat transfer material 132b for reducing the temperature deviation of the battery cell 110 as described above.
- the second heat transfer material 132b gradually increases the distance from the outer central point in the width direction of the battery cell 110 (the point at which the longitudinal direction of the battery cell is equal) to both ends (both end points in the longitudinal direction of the battery cell). It has a structure that is narrowly arranged in multiple columns. Accordingly, a large amount of the second heat transfer material 132b is arranged at both ends of the battery cell generating high heat to greatly increase heat dissipation, and a small amount of the second heat transfer material 132b is arranged at the central point of the battery cell generating low heat. Thus, the exothermicity can be increased less. As a result, the temperature deviation due to the difference in heat dissipation between the central point and both ends of the battery cell can be greatly reduced.
- the heat dissipation member 130 having the above configuration can greatly increase the heat dissipation properties of the plurality of battery cells 110 accommodated in the battery case 120 , and in particular can reduce the overall temperature variation of the plurality of battery cells, thereby reducing the battery cell performance. can increase
- the cover plate 131 is provided in the center of one surface and includes a first receiving groove 131a having a structure connected in the longitudinal direction of the battery cell 110 and the battery cell 110 .
- the second receiving grooves 131b are provided on both sides of the first receiving grooves 131a in the thickness direction, respectively, and the second receiving grooves 131b having a structure in which the intervals are gradually narrowed from the center to both ends of the battery cell 110 are included.
- the first heat transfer material 132a is provided in the first receiving groove 131a
- the second heat transfer material 132b is provided in the second receiving groove 131b.
- first accommodating groove 131a and the second accommodating groove 131b have a structure formed in a concave shape on the upper surface of the cover plate 131 as seen in FIG. 3 .
- first heat transfer material 132a and the second heat transfer material 132b are made of the same material.
- the heat dissipation member 130 having such a configuration forms a first accommodating groove 131a and a second accommodating groove 131b on one surface of the cover plate 131 to form a first heat transfer material 132a and a second heat transfer material ( 132b) can be easily formed.
- first accommodating groove 131a and the second accommodating groove 131b are formed to be connected, and accordingly, the first accommodating groove 131a and the second accommodating groove 131b provided in the first accommodating groove 131b are formed to be connected. and the second heat transfer materials 132a and 132b may be integrally connected, and as a result, heat generated from the battery cell 110 may be dispersed throughout the first and second heat transfer materials 132a and 132b. heat dissipation can be improved.
- an insulating member 133 having insulating properties is provided on one surface of the cover plate 131 except for the first and second receiving grooves 131a and 131b. That is, the insulating member 133 insulates between the battery cell 110 and the cover plate 131 , thereby preventing a short circuit that may occur as the battery cell 110 and the cover plate 131 come into contact with each other.
- the insulating member 133 has an adhesive tape shape and is attached to one surface of the cover plate 131 . Accordingly, it is possible to increase the convenience of use.
- a coating layer is further included between the end of the insulating member 133 and the cover plate 131 to prevent a heat transfer material from flowing between the end of the insulating member 133 and the cover plate 131 .
- the coating layer may prevent the end of the insulating member 133 from falling off the cover plate 131 .
- the battery module 100 according to the first embodiment of the present invention further includes a heat dissipation pad 140 .
- the heat dissipation pad 140 is for reducing a temperature deviation between the upper center and both ends of the battery cell.
- both ends of the battery cell generate higher heat than the center of the battery cell because the electrode leads are connected, and heat dissipation paddles 140 are further added to reduce the temperature deviation between the center of the top surface of the battery cell and both ends.
- the heat dissipation pad 140 is attached to both sides of the inner surface of the battery case 120 , and both ends of the upper surface of the battery cell 110 accommodated in the battery case 120 are supported, and both ends of the upper surface of the battery cell 110 are supported. It dissipates heat, and thus the temperature deviation between the center and both ends of the battery cell can be greatly reduced by increasing the heat dissipation properties of both ends of the battery cell.
- the battery case 120 further includes a finishing pad 150 for maintaining a constant distance between the heat dissipation pads 140 respectively attached to both sides of the inner surface.
- the finishing pad 150 is attached to the inner surface of the battery case 120 between the pair of heat dissipation pads 140 , and maintains a constant distance between the pair of heat dissipation pads 140 .
- the closing pad 150 closes the space between the pair of heat dissipation pads 140 , thereby preventing the battery cell 110 from being deformed while flowing into the space between the pair of heat dissipation pads 140 . .
- the method for manufacturing a battery module according to the first embodiment of the present invention includes an arrangement step, an accommodation step, a preparation step, and a combination step, as shown in FIGS. 9 to 13 .
- a plurality of battery cells 110 are prepared, the prepared plurality of battery cells 110 are overlapped in the thickness direction, and the plurality of overlapped battery cells 110 are connected in series or parallel contact.
- a plurality of battery cells 110 overlapping the inside of the battery case 120 having an open lower part is accommodated.
- the battery cell 110 is accommodated in an upright state with the electrode lead facing the longitudinal end of the battery case 120 .
- the receiving step further includes the step of attaching the heat dissipation pad 140 to both ends of the inner surface of the battery case 120 corresponding to both ends of the upper surface of the battery cell 110, respectively, and the heat dissipation pad 140 increases heat dissipation to both ends of the upper surface of the battery cell 110 .
- the receiving step further includes a step of attaching a finishing pad 150 to the inner surface of the battery case 120 between the heat dissipation pads 140 , and the finishing pad 150 is a pair of heat dissipation pads 140 . The space between them is maintained, and the space between the pair of heat dissipation pads 140 is closed.
- the preparation steps include a preparation process of preparing the cover plate 131 , a molding process of forming a receiving groove for providing a heat sink in the cover plate 131 , and a heat sink 132 through the receiving groove formed in the cover plate 131 . ) including the injection process to manufacture
- a cover plate 131 having a size and shape corresponding to the open lower portion of the battery case 120 is prepared.
- a first accommodating groove 131a and a second accommodating groove 131b formed by pressing one surface (the upper surface of the cover plate as viewed in FIG. 11 ) of the cover plate 131 with a press are engraved. ) is molded.
- the first accommodating groove 131a is formed to be connected in the longitudinal direction of the battery cell to the center of one surface of the cover plate 131 , and the second accommodating groove 131b is formed on both sides of the first accommodating groove 131a. It is provided in the portion and is formed in a structure arranged in a plurality of rows in the longitudinal direction of the battery cells 110 .
- the second accommodating grooves 131b are formed on one surface of the cover plate 131 so that the distance from the center of the battery cell 110 to both ends is gradually narrowed. Accordingly, the second heat transfer material 132b provided in the second accommodating groove 131b may be manufactured to have a structure in which the gap is gradually narrowed from the center to both ends of the battery cell 110 .
- a heat dissipating member 130 having a heat dissipating body 132 provided on one surface of the cover plate 131 on which the battery cell 110 is supported is prepared.
- the first receiving groove 131a and the second receiving groove 131b are formed to be connected, and accordingly, even if the heat transfer solution is injected into the first receiving groove 131a or the second receiving groove 131b.
- the heat transfer solution can be fed to other receiving grooves, and as a result, work efficiency can be increased.
- the first and second heat transfer materials 132a and 132b manufactured in the first accommodating groove 131a and the second accommodating groove 131b may be manufactured to be integrally connected to each other, thereby improving heat dissipation.
- an insulating member 133 having insulation is attached to one surface of the cover plate 131 except for the first accommodating groove 131a and the second accommodating groove 131b. It further includes an attaching step.
- an insulating member 133 having an adhesive force is attached to one surface of the cover plate 131 .
- a coating solution is applied between the end of the insulating member 133 and the cover plate 131 to prepare a coating layer.
- the first heat transfer material 132a and the second heat transfer material 132b are injected by injecting the heat transfer solution 132c into the first accommodation groove 131a and the second accommodation groove 131b.
- the finished battery module 100 shown in FIG. 2 can be manufactured.
- the battery module 100 is provided in the center of one surface of the cover plate 131 and has a structure connected in the longitudinal direction of the battery cell 110 . It is provided on both sides of the first accommodating groove 131a and the first accommodating groove 131a in the thickness direction of the battery cell 110 and arranged so that the distance from the center of the battery cell 110 to both ends is gradually narrowed. It includes a second receiving groove (131b) having a structure to be.
- the first accommodating groove 131a is provided to gradually increase in depth from the center to both ends of the battery cell 110, and accordingly, the first heat transfer material 132a provided in the first accommodating groove 131a. ) has a structure in which the height gradually increases from the center to both ends of the battery cell 110 .
- heat dissipation properties can be applied differently from the center to both ends of the battery cell 110 disposed in the center, and accordingly, the battery cell disposed in the center of the battery case. It is possible to reduce the temperature deviation of (110).
- the battery module 100 is provided in the center of one surface of the cover plate 131 and has a structure connected in the longitudinal direction of the battery cell 110 . It is provided on both sides of the first accommodating groove 131a and the first accommodating groove 131a in the thickness direction of the battery cell 110 and arranged so that the distance from the center of the battery cell 110 to both ends is gradually narrowed. It includes a second receiving groove (131b) having a structure to be.
- the second accommodating groove 131b is provided to gradually increase in depth from the center to both ends of the battery cell 110, and accordingly, the second heat transfer material 132b provided in the second accommodating groove 131b. ) has a structure in which the height gradually increases from the center to both ends of the battery cell 110 .
- the battery module 100 according to the second embodiment of the present invention can more precisely control the heat dissipation from the middle to both ends of the battery cells 110 disposed at both ends of the battery case, and accordingly, both sides of the battery case It is possible to reduce the temperature deviation of the battery cell 110 disposed at the end.
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- Electrochemistry (AREA)
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Algebra (AREA)
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Abstract
Description
Claims (13)
- 두께 방향으로 겹치게 배치되는 복수의 배터리 셀;상기 배터리 셀을 수용하되, 하부가 개방된 구조를 가진 배터리 케이스; 및상기 배터리 케이스의 하부에 결합되면서 상기 배터리 셀을 지지하는 커버 플레이트와, 상기 배터리 셀이 지지되는 상기 커버 플레이트의 일면에 구비되고 상기 배터리 셀에서 발생한 열을 방열하는 방열체를 구비한 방열부재를 포함하며,상기 방열체는, 상기 커버 플레이트의 일면 중앙에 상기 배터리 셀의 길이방향으로 연결되게 구비되는 제1 열전달 물질과, 상기 제1 열전달 물질의 양측부에 각각 구비되고 상기 배터리 셀의 길이방향을 따라 복수 열로 정렬되는 구조를 가지는 제2 열전달 물질을 포함하고,상기 제2 열전달 물질은, 상기 배터리 셀의 중앙에서 양쪽 끝단으로 갈수록 방열성이 증대시키기 위해 상기 배터리 셀의 중앙에서 양쪽 끝단으로 갈수록 간격이 점차 좁아지게 정렬되는 배터리 모듈.
- 청구항 1에 있어서,상기 커버 플레이트는, 일면 중앙에 구비되고 상기 배터리 셀의 길이방향으로 연결되는 구조를 가진 제1 수용홈과, 상기 배터리 셀의 두께 방향인 제1 수용홈의 양측에 구비되고 상기 배터리 셀의 중앙에서 양쪽 끝단으로 갈수록 간격이 점차 좁아지게 배열되는 구조를 가진 제2 수용홈을 포함하며,상기 제1 수용홈에는 제1 열전달 물질이 구비되고, 상기 제2 수용홈에는 상기 제2 열전달 물질이 구비되는 배터리 모듈.
- 청구항 2에 있어서,상기 제1 수용홈과 상기 제2 수용홈은 연결되게 형성되면서 상기 제1 및 제2 열전달 물질을 일체로 연결시키는 배터리 모듈.
- 청구항 2에 있어서,상기 제1 및 제2 수용홈을 제외한 상기 커버 플레이트의 일면에는 절연성을 가진 절연부재가 구비되는 배터리 모듈.
- 청구항 1에 있어서,상기 배터리 케이스의 내면 양쪽 끝단에는 상기 배터리 셀의 양쪽 끝단에서 발생하는 열을 방열하여 상기 배터리 셀의 중앙과 양쪽 끝단 사이의 온도 편차를 감소시키는 한 쌍의 방열패드가 각각 구비되는 배터리 모듈.
- 청구항 5에 있어서,한 쌍의 방열패드 사이의 상기 배터리 케이스 내면에는 한 쌍의 방열패드 사이의 공간을 마감하는 마감패드가 구비되는 배터리 모듈.
- 청구항 2에 있어서,상기 제1 수용홈은 상기 배터리 셀의 중앙에서 양쪽 끝단으로 갈수록 깊이가 점차 증대되게 구비되고,상기 제1 수용홈에 구비되는 제1 열전달 물질은 상기 배터리 셀의 중앙에서 양쪽 끝단으로 갈수록 두께가 점차 증대되게 구비되는 배터리 모듈.
- 청구항 2에 있어서,상기 배터리 셀의 중앙에 위치한 상기 제2 수용홈에서 상기 배터리 셀의 양쯕단에 위치한 상기 제2 수용홈으로 갈수록 깊이가 점차 증대되게 구비되고,상기 제2 수용홈에 구비된 복수의 제2 열전달 물질은 상기 배터리 셀의 중앙에서 양쪽 끝단으로 갈수록 두께가 점차 증대되게 구비되는 배터리 모듈.
- 복수개의 배터리 셀을 두께 방향으로 겹치게 배치하는 배치단계;하부가 개방된 배터리 케이스의 내부에 겹친 복수개의 배터리 셀을 수용하는 수용단계;커버 플레이트와, 상기 배터리 셀이 지지되는 커버 플레이트의 일면에 구비되는 방열체를 포함한 방열부재를 준비하는 준비단계;상기 방열부재의 커버 플레이트를 상기 배터리 케이스의 하부에 결합하고, 상기 방열체를 상기 배터리 셀에 지지시키는 결합단계를 포함하며,상기 준비단계는, 커버 플레이트를 준비하는 준비공정, 상기 커버 플레이트의 일면을 프레스로 가압하여 제1 수용홈과 제2 수용홈을 성형하는 성형공정, 상기 제1 수용홈과 상기 제2 수용홈에 열전달 용액을 주입하여 방열체를 제조하되, 상기 방열체는 상기 제1 수용홈에 형성되는 제1 열전달 물질과, 상기 제2 수용홈에 형성되는 제2 열전달 물질을 포함하는 주입공정을 포함하고,상기 성형공정에서 제1 수용홈은 상기 커버 플레이트의 일면 중앙에 상기 배터리 셀의 길이방향으로 연결되게 성형되고, 상기 제2 수용홈은 상기 제1 수용홈의 양측부에 구비되고 상기 배터리 셀의 길이방향으로 복수 열로 정렬되는 구조로 성형되며,상기 제2 수용홈은 상기 커버 플레이트의 일면에 상기 배터리 셀의 중앙에서 양쪽 끝단으로 갈수록 간격이 점차 좁아지게 배열되도록 성형되고,상기 제2 수용홈에 구비되는 상기 제2 열전달 물질은 상기 배터리 셀의 중앙에서 양쪽 끝단으로 갈수록 간격이 점차 좁아지게 배열되는 구조를 가지는 배터리 모듈 제조방법.
- 청구항 9에 있어서,상기 성형공정은 제1 수용홈과 제2 수용홈을 연결되게 성형하며,상기 주입공정은 상기 제1 수용홈과 상기 제2 수용홈이 연결됨에 따라 제1 열전달 물질과 제2 열전달 물질이 일체로 연결된 방열체를 제조하는 배터리 모듈 제조방법.
- 청구항 9에 있어서,상기 성형공정과 상기 주입공정 사이에는, 상기 제1 수용홈과 제2 수용홈을 제외한 상기 커버 플레이트의 일면에 절연성을 가진 절연부재를 부착하는 부착공정을 더 포함하는 배터리 모듈 제조방법.
- 청구항 9에 있어서,상기 수용단계는, 상기 배터리 셀의 양쪽 끝단과 대응하는 상기 배터리 케이스의 내면 양쪽 끝단에 방열성을 가진 방열패드를 각각 부착하는 공정을 더 포함하는 배터리 모듈 제조방법.
- 청구항 12에 있어서,상기 수용단계는, 상기 방열패드 사이의 상기 배터리 케이스 내면에 마감패드를 부착하는 공정을 더 포함하는 배터리 모듈 제조방법.
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| CN202180006587.5A CN114930616B (zh) | 2020-06-10 | 2021-04-30 | 电池模块及其制造方法 |
| JP2022528283A JP7321635B2 (ja) | 2020-06-10 | 2021-04-30 | バッテリーモジュール及びその製造方法 |
| US17/783,148 US12407039B2 (en) | 2020-06-10 | 2021-04-30 | Battery module and method for manufacturing the same |
| EP21822818.7A EP4047719B1 (en) | 2020-06-10 | 2021-04-30 | Battery module and method for manufacturing the same |
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| CN114930616A (zh) | 2022-08-19 |
| JP2023501736A (ja) | 2023-01-18 |
| JP7321635B2 (ja) | 2023-08-07 |
| EP4047719A4 (en) | 2023-08-16 |
| EP4047719A1 (en) | 2022-08-24 |
| KR102937900B1 (ko) | 2026-03-11 |
| US12407039B2 (en) | 2025-09-02 |
| US20230023147A1 (en) | 2023-01-26 |
| EP4047719B1 (en) | 2026-03-11 |
| KR20210153431A (ko) | 2021-12-17 |
| CN114930616B (zh) | 2025-09-12 |
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