WO2022154311A1 - 전지 모듈 및 이를 포함하는 전지 팩 - Google Patents
전지 모듈 및 이를 포함하는 전지 팩 Download PDFInfo
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- WO2022154311A1 WO2022154311A1 PCT/KR2021/019809 KR2021019809W WO2022154311A1 WO 2022154311 A1 WO2022154311 A1 WO 2022154311A1 KR 2021019809 W KR2021019809 W KR 2021019809W WO 2022154311 A1 WO2022154311 A1 WO 2022154311A1
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- WIPO (PCT)
- Prior art keywords
- battery
- battery cell
- module
- cell stack
- sheet layer
- Prior art date
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Images
Classifications
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- 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
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
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- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
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- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
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- 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
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- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
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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 module and a battery pack including the same, and more particularly, to a battery module with improved processability and a battery pack including the same.
- Secondary batteries are receiving a lot of attention as an energy source in various product groups such as mobile devices and electric vehicles.
- Such a secondary battery is a powerful energy resource that can replace the use of conventional products using fossil fuels, and is in the spotlight as an eco-friendly energy source because no by-products are generated according to energy use.
- a battery module including at least one battery cell is configured, and other components are added to the at least one battery module to configure the battery pack. How to do it is common
- Such a battery module may include a battery cell stack in which a plurality of battery cells are stacked and a frame accommodating the battery cell stack.
- FIG. 1 is an exploded perspective view showing a conventional battery module.
- a conventional battery module includes a battery cell stack 10 in which a plurality of battery cells are stacked, a mono frame 20 accommodating the battery cell stack 10 , and front and rear surfaces of the battery cell stack. It may include end plates 40 that cover the .
- bus bar frames 41 may be positioned between the battery cell stack 10 and the end plate 40 , and the cover plate 50 is disposed between the upper portion of the battery cell stack 10 and the mono frame 20 . ) can be located.
- the bus bar frame 41 and the cover plate 50 may be coupled to each other to form a bus bar frame assembly.
- An object of the present invention is to provide a battery module with improved processability and a battery pack including the same.
- a battery module includes a battery cell stack formed by stacking a plurality of battery cells, a module frame accommodating the battery cell stack, and between the battery cell stack and an upper surface of the module frame. Including an insulating sheet layer positioned on the module frame, an opening is formed on the upper surface of the module frame, the insulating sheet layer may be formed with a protrusion inserted into the opening.
- the module frame may include a frame member on which the battery cell stack is mounted, and an upper plate positioned opposite to the bottom of the frame member and having the opening.
- the frame member may include the bottom portion and side portions respectively extending upward from both sides of the bottom portion.
- the battery module may further include a temperature sensor positioned between the lower end of the insulating sheet layer portion formed with the protrusion and the battery cell stack.
- a depression may be formed inside the protrusion of the insulating sheet layer, and a portion of the temperature sensor may be disposed in the depression.
- the protrusion of the insulating sheet layer may be exposed to the outside of the module frame by the opening.
- the battery module may further include an end plate positioned on each of the open first side and the second side of the module frame, and the opening may be formed adjacent to the end plate rather than the central portion of the battery cell stack.
- the insulating sheet layer may include a polycarbonate (PC) film.
- PC polycarbonate
- the insulating sheet layer may be adhered to the upper surface of the module frame.
- a battery pack according to another embodiment of the present invention includes the battery module described above.
- insulating performance between the plurality of battery cells and the module frame may be secured through the insulating sheet layer positioned on the battery cell stack.
- an opening is formed in the upper plate of the module frame to avoid interference between components, and an insulating sheet layer is formed along the opening, thereby securing a space for the temperature sensor for measuring the temperature of the battery cell.
- FIG. 1 is an exploded perspective view showing a conventional battery module.
- FIG. 2 is an exploded perspective view of a battery module according to an embodiment of the present invention.
- FIG. 3 is a perspective view showing a state in which the components of the battery module of FIG. 2 are combined.
- FIG. 4 is a perspective view showing a battery cell according to an embodiment of the present invention.
- FIG. 5 is a perspective view of the battery module of FIG. 3 as viewed in a state in which it is rotated 180 degrees.
- FIG. 6 is a perspective view illustrating an upper plate and an insulating sheet layer included in the battery module of FIG. 5 .
- FIG. 7 is a cross-sectional view taken along the cutting line A-A of FIG. 5 .
- a part of a layer, film, region, plate, etc. when a part of a layer, film, region, plate, etc. is said to be “on” or “on” another part, it includes not only cases where it is “directly on” another part, but also cases where there is another part in between. . Conversely, when we say that a part is “just above” another part, we mean that there is no other part in the middle.
- the reference portion means to be located above or below the reference portion, and to necessarily mean to be located “on” or “on” in the direction opposite to gravity not.
- planar view it means when the target part is viewed from above, and when it is referred to as “cross-section”, it means when the cross-section obtained by cutting the target part vertically is viewed from the side.
- FIG. 2 is an exploded perspective view of a battery module according to an embodiment of the present invention.
- 3 is a perspective view showing a state in which the components of the battery module of FIG. 2 are combined.
- 4 is a perspective view showing a battery cell according to an embodiment of the present invention.
- the battery module includes a battery cell stack 100 in which a plurality of battery cells 110 are stacked, and a module for accommodating the battery cell stack 100 .
- Frame 180 , end plates 400 positioned on the front and rear surfaces of the battery cell stack 100 , respectively, and a bus bar frame 410 positioned between the battery cell stack 100 and the end plate 400 ) includes
- the insulating sheet layer 500 is formed between the battery cell stack 100 and the upper surface of the module frame 180 .
- the module frame 180 may include a frame member 200 having an open upper side, and an upper plate 300 covering an open upper side of the frame member 200 .
- the frame member 200 may include a bottom portion 210 and at least two side portions 220 bent at both ends of the bottom portion 210 .
- the frame member 200 may be U-shaped.
- the battery cell 110 is preferably a pouch-type battery cell.
- the two electrode leads 111 and 112 are opposite to each other to be different from the one end 114a of the battery body 113 .
- Each has a structure protruding from one end (114b).
- the battery cell 110 is manufactured by attaching both ends 114a and 114b of the battery case 114 and one side 114c connecting them to the battery case 114 in a state in which an electrode assembly (not shown) is accommodated.
- the battery cell 110 has a total of three sealing portions 114sa, 114sb, 114sc, and the sealing portions 114sa, 114sb, 114sc are sealed by a method such as thermal fusion. structure, and the other one side may be formed of a connection part 115 .
- the battery case 114 is defined in the longitudinal direction of the battery cell 110, one side portion 114c connecting the both ends (114a, 114b) of the battery case 114 and the connecting portion A space between 115 may be defined in the width direction of the battery cell 110 .
- connection part 115 is a region extending long along one edge of the battery cell 110 , and a protrusion 110p of the battery cell 110 called a bat-ear is formed at the end of the connection part 115 .
- the protrusion 110p may be formed on at least one of both ends of the connection part 115 , and may protrude in a direction perpendicular to the direction in which the connection part 115 extends.
- the protrusion 110p may be positioned between one of the sealing parts 114sa and 114sb of both ends 114a and 114b of the battery case 114 and the connection part 115 .
- the battery case 114 generally has a laminate structure of a resin layer/metal thin film layer/resin layer.
- the battery case surface is made of an O (oriented)-nylon layer
- an adhesive member such as an adhesive adhesive such as a double-sided tape or a chemical adhesive bonded by a chemical reaction during adhesion is attached to the surface of the battery case to form a battery cell laminate. (100) can be formed.
- the battery cells 110 are stacked along the y-axis direction to form the battery cell stack 100, and the battery cell stack 100 is the module frame 180 in the opposite direction to the z-axis. can be accommodated inside.
- a thermally conductive resin layer may be positioned between the battery cell stack 100 and the bottom 210 of the frame member 200 .
- the frame member 200 accommodates the battery cell stack 100 .
- the module frame 180 corresponds to the first side and the second side.
- the outer surfaces other than the outer surface of the battery cell stack 100 it may be formed in a bent plate-shaped structure to continuously cover the lower surface and both sides adjacent to the lower surface.
- the bottom portion 210 of the frame member 200 is formed to cover the lower surface of the battery cell stack 100
- the two side portions 220 of the frame member 200 are of the battery cell stack 100 . It may be formed to cover the both sides.
- the upper plate 300 may be formed in a single plate-shaped structure surrounding the upper surface other than the lower surface and the both sides covered by the frame member 200 .
- the frame member 200 and the upper plate 300 may form a structure that covers the battery cell stack 100 up, down, left, and right by being joined by welding or the like in a state in which corresponding corner portions are in contact with each other.
- the battery cell stack 100 may be physically protected through the frame member 200 and the upper plate 300 .
- the frame member 200 and the upper plate 300 may include a metal material having a predetermined strength.
- the end plate 400 may be positioned on the open first side (x-axis direction) and the second side (the opposite direction of the x-axis) of the module frame 180 to cover the battery cell stack 100 .
- the end plate 400 may physically protect the battery cell stack 100 and other electrical components from external impact, and a battery module mounting structure may be provided to fix the battery module to a pack frame (not shown).
- bus bar frame 410 and the separation cover 420 may be positioned on the open first side (x-axis direction) and the second side (the opposite direction of the x-axis) of the battery cell stack 100 . That is, the bus bar frame 410 and the separation cover 420 may be sequentially positioned between the battery cell stack 100 and the end plate 400 .
- the bus bar frame 410 is positioned on the first side (x-axis direction) and the second side (the opposite direction of the x-axis) of the battery cell stack 100 to cover the battery cell stack 100 and at the same time, the battery cells It may serve to guide the connection between the laminate 100 and an external device.
- a bus bar may be mounted on the bus bar frame 410 , and the electrode leads 111 and 112 of the battery cell 110 shown in FIG. 4 are bent after passing through the slit formed in the bus bar frame 410 . It can be joined to the busbar. Through this, the battery cells 110 constituting the battery cell stack 100 may be connected in series or in parallel.
- a terminal bus bar 430 may be mounted on the bus bar frame 410 .
- the terminal bus bar 430 is connected to at least one of the electrode leads 111 and 112 of the battery cell 110 , and one end is exposed to the outside through openings respectively formed in the separation cover 420 and the end plate 400 .
- the plurality of battery cells 110 may be electrically connected to an external device through the terminal bus bar 430 .
- a connector (not shown) may be mounted on the bus bar frame 410 . Information such as the temperature or voltage of the battery cell 110 measured through a sensing assembly (not shown) inside the battery module may be transmitted to an external battery management system (BMS) or the like through the connector.
- BMS battery management system
- the separation cover 420 is an electrically insulating member, and separates the battery cell stack 100, the bus bar frame 410, and other electrical components from the end plate 400 or the upper plate 300 to prevent external short circuits, etc. You can do something to prevent this from happening.
- the separation cover 420 may be formed with a recessed portion 421 to guide the connection between the connector and the external BMS.
- the insulating sheet layer 500 is a thin film having an electrically insulating performance, and may include a polycarbonate (PC) film.
- the insulating sheet layer 500 may have a thin thickness of 0.1 mm to 0.3 mm. Therefore, even when the insulating sheet layer 500 is inserted into the battery module, there is an advantage that the height increase of the battery module is not large.
- the insulating sheet layer 500 including a polycarbonate (PC) film has heat resistance, so that even when exposed for a long time in a high temperature environment, the degree of change in its shape is not large. Therefore, it is easy to manage the product, and it is suitable to be applied as a component of a battery module that generates heat.
- PC polycarbonate
- the battery cell stack 100 and the upper plate 300 may be insulated from each other. That is, it is possible to secure the insulation performance of the battery module.
- a bus bar frame assembly including a cover plate 50 is inserted to secure insulation performance, which acts as a disadvantage in terms of space utilization and weight.
- the insulating sheet layer 500 according to the present embodiment is a thin film, and it is possible to secure the insulating performance of the battery module and reduce both the height and the weight of the battery module.
- a comparative example there is a case where an insulator in the form of a pad is positioned on the battery cell stack.
- This comparative example is heavier and requires more space than the insulating sheet layer 500 according to the present embodiment.
- the insulating sheet layer 500 according to the present embodiment can be molded into a desired shape, the pad-shaped insulator can cover even a portion where it is impossible to secure an insulating distance, so that the insulating performance can be increased.
- FIG. 5 is a perspective view of the battery module of FIG. 3 as viewed in a state in which it is rotated 180 degrees.
- 6 is a perspective view illustrating an upper plate and an insulating sheet layer included in the battery module of FIG. 5 .
- an opening 300A is formed in the upper surface of the module frame 180 according to the present embodiment. Specifically, an opening 300A is formed in the upper plate 300 , and a protrusion 500p inserted into the opening 300A is formed in the insulating sheet layer 500 . The protrusion 500p may be exposed to the outside of the module frame 180 by the opening 300A.
- the opening 300A may be formed adjacent to the end plate 400 rather than the central portion of the battery cell stack 100 .
- the insulating sheet layer 500 may be adhered to the upper plate 300 . More specifically, an adhesive member (not shown) may be positioned between the insulating sheet layer 500 and the upper plate 300 . If the adhesive member includes a material having an adhesive force, the material or shape thereof is not limited, but may be a double-sided tape.
- the insulating sheet layer 500 may be delivered in a state of being adhered to the upper plate 300 .
- the insulating sheet layer 500 may be formed of a thin film, and may be easily attached to the upper plate 300 .
- the insulating sheet layer 500 may be disposed and assembled on the battery cell stack 100 in a state in which it is adhered to the upper plate 300 to manufacture a battery module. That is, since the insulating sheet layer 500 is delivered in an adhesive state to the upper plate 300 , defects in the manufacturing process in which the insulating sheet layer 500 is misaligned or separated during the assembly process of the upper plate 300 can be prevented. have.
- FIG. 7 is a cross-sectional view taken along the cutting line A-A of FIG. 5 .
- the battery module according to the present embodiment further includes a temperature sensor 700 positioned between the lower end of the insulating sheet layer 500 in which the protrusion 500p is formed and the battery cell stack 100 .
- the temperature sensor 700 may measure the temperature of the battery cell 110 .
- the temperature sensor 700 may be formed on the flexible circuit board part 800 .
- the temperature sensor 700 may be implemented using a thermistor element.
- a thermistor is a semiconductor device using a phenomenon in which a resistance value varies according to temperature, and may be formed by mixing and sintering oxides such as copper, manganese, nickel, cobalt, chromium, and iron. Such a thermistor has the advantage of being small in size and capable of measuring even a rapid temperature change or a minute temperature change.
- the temperature information measured by the temperature sensor 700 may be transmitted to another device outside the battery module.
- the measured temperature information is transmitted to a battery management system (BMS) outside the battery module, and may be used to control the battery module.
- BMS battery management system
- a depression 500A may be formed inside the protrusion 500p of the insulating sheet layer 500 , and a portion of the temperature sensor 700 may be disposed in the depression 500A.
- the opening 300A may be formed when the material of the upper plate 300 is trimmed without separate machining to secure a space for the temperature sensor 700 .
- the space of the temperature sensor 700 component is secured, thereby improving fairness.
- the battery module described above may be included in the battery pack.
- the battery pack may have a structure in which one or more battery modules according to the present embodiment are collected and packed by adding a battery management system (BMS) that manages the temperature or voltage of the battery and a cooling device.
- BMS battery management system
- the battery pack may be applied to various devices. These devices can be applied to transportation means such as electric bicycles, electric vehicles, hybrid vehicles, etc., but the present invention is not limited thereto and can be applied to various devices that can use a battery module, which also falls within the scope of the present invention. .
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Battery Mounting, Suspending (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
Claims (10)
- 복수의 전지셀이 적층되어 형성된 전지셀 적층체,상기 전지셀 적층체를 수납하는 모듈 프레임, 및상기 전지셀 적층체와 상기 모듈 프레임의 상부면 사이에 위치하는 절연 시트층을 포함하고,상기 모듈 프레임의 상부면에는 개구부가 형성되고, 상기 절연 시트층에는 상기 개구부에 삽입되는 돌출부가 형성되는 전지 모듈.
- 제1항에서,상기 모듈 프레임은, 상기 전지셀 적층체가 장착되는 프레임 부재와, 상기 프레임 부재의 바닥부 반대편에 위치하며, 상기 개구부가 형성된 상부 플레이트를 포함하는 전지 모듈.
- 제2항에서,상기 프레임 부재는 상기 바닥부와, 상기 바닥부의 양측부로부터 각각 상향 연장된 측면부를 포함하는 전지 모듈.
- 제1항에서,상기 돌출부가 형성된 상기 절연 시트층 부분 하단과 상기 전지셀 적층체 사이에 위치하는 온도 센서를 더 포함하는 전지 모듈.
- 제4항에서,상기 절연 시트층의 돌출부 내측에는 함몰부가 형성되고, 상기 함몰부에 상기 온도 센서 일부가 배치되는 전지 모듈.
- 제1항에서,상기 개구부에 의해 상기 절연 시트층의 돌출부가 상기 모듈 프레임 외부로 노출되어 있는 전지 모듈.
- 제1항에서,상기 모듈 프레임의 개방된 제1 측과 제2 측 각각에 위치하는 엔드 플레이트를 더 포함하고,상기 개구부는 상기 전지셀 적층체의 중앙부보다 상기 엔드 플레이트에 인접하게 형성되는 전지 모듈.
- 제1항에서,상기 절연 시트층은 폴리카보네이트(polycarbonate, PC) 필름을 포함하는 전지 모듈.
- 제1항에서,상기 절연 시트층은 상기 모듈 프레임의 상부면에 접착되는 전지 모듈.
- 제1항에 따른 전지 모듈을 포함하는 전지 팩.
Priority Applications (4)
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JP2022567400A JP7501974B2 (ja) | 2021-01-14 | 2021-12-24 | 電池モジュールおよびこれを含む電池パック |
CN202180035907.XA CN115668606A (zh) | 2021-01-14 | 2021-12-24 | 电池模块和包括该电池模块的电池组 |
US18/025,595 US20240014489A1 (en) | 2021-01-14 | 2021-12-24 | Battery module and battery pack including the same |
EP21919935.3A EP4131609A4 (en) | 2021-01-14 | 2021-12-24 | BATTERY MODULE AND BATTERY INCLUDING SAME |
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KR10-2021-0005509 | 2021-01-14 | ||
KR1020210005509A KR20220102950A (ko) | 2021-01-14 | 2021-01-14 | 전지 모듈 및 이를 포함하는 전지 팩 |
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US (1) | US20240014489A1 (ko) |
EP (1) | EP4131609A4 (ko) |
JP (1) | JP7501974B2 (ko) |
KR (1) | KR20220102950A (ko) |
CN (1) | CN115668606A (ko) |
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JP7364101B1 (ja) * | 2023-01-19 | 2023-10-18 | Tdk株式会社 | 蓄電池用仕切りシートおよび蓄電池システム |
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JP2023150576A (ja) * | 2022-03-31 | 2023-10-16 | 株式会社Aescジャパン | 電池モジュール |
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- 2021-01-14 KR KR1020210005509A patent/KR20220102950A/ko not_active Application Discontinuation
- 2021-12-24 US US18/025,595 patent/US20240014489A1/en active Pending
- 2021-12-24 CN CN202180035907.XA patent/CN115668606A/zh active Pending
- 2021-12-24 EP EP21919935.3A patent/EP4131609A4/en active Pending
- 2021-12-24 JP JP2022567400A patent/JP7501974B2/ja active Active
- 2021-12-24 WO PCT/KR2021/019809 patent/WO2022154311A1/ko active Application Filing
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Publication number | Publication date |
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EP4131609A4 (en) | 2024-05-01 |
CN115668606A (zh) | 2023-01-31 |
KR20220102950A (ko) | 2022-07-21 |
JP7501974B2 (ja) | 2024-06-18 |
JP2023525008A (ja) | 2023-06-14 |
EP4131609A1 (en) | 2023-02-08 |
US20240014489A1 (en) | 2024-01-11 |
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