WO2022270949A1 - 셀 모듈 어셈블리 및 이를 포함하는 배터리 팩 - Google Patents
셀 모듈 어셈블리 및 이를 포함하는 배터리 팩 Download PDFInfo
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- WO2022270949A1 WO2022270949A1 PCT/KR2022/008966 KR2022008966W WO2022270949A1 WO 2022270949 A1 WO2022270949 A1 WO 2022270949A1 KR 2022008966 W KR2022008966 W KR 2022008966W WO 2022270949 A1 WO2022270949 A1 WO 2022270949A1
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- Prior art keywords
- cell
- battery
- cell module
- cell frame
- module assembly
- Prior art date
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- 229910052751 metal Inorganic materials 0.000 claims description 24
- 239000002184 metal Substances 0.000 claims description 24
- 230000000712 assembly Effects 0.000 claims description 18
- 238000000429 assembly Methods 0.000 claims description 18
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- 125000006850 spacer group Chemical group 0.000 description 10
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
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- 239000004020 conductor Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
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- 229910000652 nickel hydride Inorganic materials 0.000 description 1
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
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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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
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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
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/643—Cylindrical 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
-
- 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
- H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
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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
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
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- 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
- H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
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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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
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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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/514—Methods for interconnecting adjacent batteries or cells
- H01M50/516—Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
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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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/519—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising printed circuit boards [PCB]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/10—Temperature sensitive devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present invention relates to battery technology, and more particularly, to a cell module assembly having a simple voltage/temperature sensing structure and excellent durability, and a battery pack including the same.
- Secondary batteries which are highly applicable to each product group and have electrical characteristics such as high energy density, are used not only for portable devices but also for electric vehicles (EVs) or hybrid electric vehicles (HEVs) driven by an electrical driving source. It is universally applied to scooters (Electric Scooter) and the like. These secondary batteries have not only the primary advantage of significantly reducing the use of fossil fuels, but also the advantage of not generating any by-products due to the use of energy, so they are attracting attention as a new energy source for improving eco-friendliness and energy efficiency.
- the unit secondary battery cell that is, the operating voltage of the unit battery cell is about 2.5V to 4.5V. Therefore, at present, it is not possible to obtain sufficient output to drive an electric scooter, for example, with one secondary battery cell.
- a battery module in which a plurality of lithium ion battery cells are connected in series and/or parallel must be configured. (Battery Management System), BDU (Battery Disconnection Unit), and electrical connection parts.
- the battery module 1 includes a harness cable to transmit voltage information of battery cells to the BMS.
- the harness cable may be composed of several strands of cables 2, terminals 3 of the cables coupled to one end of each cable 2, and connectors 5 integrally connected to the other ends of all the cables.
- the terminals 4 of the cable are wired to different voltage measurement locations and connected to metal plates (4, also referred to as bus bars) (connected to the anode or cathode of the battery cell) at the corresponding location. do. That is, the terminals 3 of the harness cable are connected to the corresponding metal plates 4 of the battery module and the connector 5 of the harness cable is connected to the BMS.
- the BMS monitors the voltages of the battery cells included in the battery module in real time and controls charging and discharging.
- soldering, bolting, and riveting are used to connect the terminal of the cable and the metal plate.
- Soldering, bolting, and riveting methods have advantages and disadvantages as shown in FIG. 2 in relation to cost, work speed, durability, possibility of rework, and the like.
- a structure additionally designed to the frame of the battery module for example, a cable tie, a cable holder, a clip or a wiring groove) structure
- cable wiring structures that are complicatedly extended in multiple paths make it difficult to simplify or compact a battery module or battery pack.
- the present invention has been devised to solve the above problems, and provides a cell module assembly having a simple connection and assembly structure between components for voltage or temperature sensing of battery cells and excellent durability, and a battery pack including the same. aims to do
- an object of the present invention is to provide a battery pack including a plurality of cell module assemblies having excellent durability and safety.
- Cell module assembly a plurality of battery cells; a cell frame accommodating the plurality of battery cells; bus bar plates disposed on one outer surface of the cell frame and electrically connecting the plurality of battery cells; and a sensing unit disposed on the other outer surface of the cell frame and electrically connected to the bus bar plates by wire bonding.
- the sensing unit may include a printed circuit board detachably coupled to the cell frame; a plurality of sensing plates coupled to the printed circuit board and wire-bonded to the bus bar plates; and a temperature sensing member coupled to the printed circuit board and measuring the temperature of one or more of the battery cells spaced apart from each other by a predetermined distance.
- the plurality of sensing plates may be provided in a number corresponding to the bus bar plates one-to-one and may be connected to the corresponding bus bar plates through wire bonding.
- the printed circuit board may be disposed on a side surface of the cell frame crossing an outer surface of the cell frame on which the bus bar plates are disposed.
- the side surface of the cell frame can insert the printed circuit board parallel to the side surface of the cell frame to a predetermined depth, and the printed circuit board supports the printed circuit board so that the printed circuit board is in close contact with the side surface of the cell frame.
- a holder may be included.
- the plurality of sensing plates may be provided in a structure bent at least once, one side fixedly coupled to the printed circuit board, and the other side disposed side by side on one outer surface of the cell frame on which the bus bar plates are disposed.
- It may include a board connection part attached to the printed circuit board; and a frame seating part extending from the board connection part and disposed at an edge of one outer surface of the cell frame.
- One end portions of the bus bar plates and frame seating portions of the sensing plates may be alternately disposed adjacent to each other.
- Each of the bus bar plates and each of the sensing plates may be connected by two metal wires.
- the battery cells are cylindrical battery cells having a battery can containing an electrode assembly and a top cap coupled to the upper end of the battery can, and the battery cells are mounted on the cell frame so that the upper end of the battery can faces the same direction. can be accepted
- the cell frame is provided in a box shape with one surface open, and includes an accommodating portion having a height corresponding to the length of the battery cells and forming a space in which the battery cells can be erected and accommodated; an upper plate portion located in the direction of the upper end of the battery can; and an opening located in a direction toward a lower end of the battery can, and the upper plate may include terminal connection holes partially exposing the upper end of the battery can.
- the plurality of bus bar plates are attached to the outer surface of the upper plate of the cell frame, and the plurality of bus bar plates are connected to the top cap of each of the battery cells or the top of the battery can exposed through the terminal connection holes. Can be wire bonded.
- the temperature sensing member includes a first temperature sensing member having one end inserted into the cell frame, and the first temperature sensing member includes a first cable extending from the printed circuit board by a predetermined length; and A first thermistor coupled to an end of one cable may be provided, and the first thermistor may be inserted into the receiving part through a temperature sensing hole formed through an upper plate of the cell frame to come into contact with the battery cell.
- the battery cell contacted by the first thermistor may be one of battery cells located in a central region of the cell frame.
- the upper plate of the cell frame may include a plurality of cable guide ribs protruding from a straight wiring path of the first cable so as to be wired in a straight line from the printed circuit board to the temperature sensing hole.
- the plurality of cable guide ribs may include an inlet support rib for supporting a portion of the first cable immediately before being introduced into the temperature sensing hole at a predetermined height from the surface of the upper plate of the cell frame.
- the temperature sensing member includes a second temperature sensing member having one end extending to a side cutout formed through the other outer surface of the cell frame intersecting the upper plate portion of the cell frame, the second temperature sensing member comprising the printed circuit board.
- a second cable extending from the board by a predetermined length; and a second thermistor coupled to an end of the second cable, wherein the second thermistor extends through the side cutout to the battery cell located at the outermost part of the accommodating part. It can be placed in contact with the side.
- a battery pack including the above-described cell module assembly, comprising: two cell module assemblies in which the cell frames are coupled to each other so that the top caps of the battery cells face each other; a BMS assembly coupled to one side of the two cell module assemblies; and a pack case integrally accommodating the two cell module assemblies and the BMS assembly.
- the upper plate of one of the two cell frames facing each other has one or more protrusions protruding in a coupling direction, and the upper plate of the other cell frame protrudes in a coupling direction. It may be provided with one or more space maintaining columns provided to fit the protrusions inside.
- the bus bar plates may be disposed on an upper plate of the cell frame, and the sensing unit may be disposed on a side of the cell frame crossing the upper plate of the cell frame.
- an electric scooter including the battery pack described above may be provided.
- an electric vehicle including the battery pack described above may be provided.
- a cell module assembly having a simple connection and assembly structure between components for voltage or temperature sensing of battery cells and excellent durability, and a battery pack including the same may be provided.
- a thermistor in a cell module assembly including a plurality of battery cells, can be effectively and stably disposed where a battery cell having a high rate of temperature increase during charging and discharging of the battery cells is located.
- two cell module assemblies in which cell frames are assembled so that the top caps of the battery cells face each other can be accommodated in a pack case.
- FIG. 1 is a view showing an electrical connection structure for voltage sensing of a cell module assembly according to the prior art.
- FIG 3 is a perspective view of a battery pack according to an embodiment of the present invention.
- FIG. 4 is a partially exploded perspective view of the battery pack of FIG. 3 .
- FIG. 5 is a perspective view illustrating two cell module assemblies and a BMS assembly in FIG. 4 .
- FIG. 6 is a cross-sectional view of a battery pack according to an embodiment of the present invention.
- FIG. 7 is a perspective view of the first cell module assembly of FIG. 5 .
- FIG. 8 is a view showing a cell frame of the first cell module assembly of FIG. 7 .
- FIG. 9 is a diagram illustrating an exemplary configuration in which battery cells are accommodated in the cell frame of FIG. 8 .
- FIG. 10 is a perspective view of a cell spacer according to an embodiment of the present invention.
- FIG. 11 is a view in which the cell spacer of FIG. 10 is applied to the configuration of FIG. 9 .
- FIG. 12 is a view in which a heat dissipation pad is applied to the exemplary embodiment of FIG. 11 .
- FIG. 13 is a view looking at the upper plate of the cell frame, which is the opposite side of the embodiment of FIG. 12 .
- FIG. 14 is a view showing portions of an upper plate and a side part of a cell frame in the first cell module assembly of FIG. 13 .
- FIG. 15 is a view of the top plate and the side surface of the cell frame of FIG. 14 viewed from different angles.
- FIG. 16 is a perspective view of the sensing unit of FIG. 15 .
- FIG. 17 is a side view of the sensing unit of FIG. 16 .
- FIG. 18 is a reference diagram for explaining a temperature distribution measured during discharging of battery cells included in a first cell module assembly according to an embodiment of the present invention.
- 19 is an enlarged view of a portion of the upper plate of the cell frame of the first cell module assembly according to an embodiment of the present invention.
- FIG. 20 is a view of a portion of the upper plate of the cell frame of FIG. 19 viewed from another angle.
- 21 and 22 are views showing before and after assembling a two-cell module assembly according to an embodiment of the present invention.
- FIG. 23 is a view showing that a BMS assembly is assembled to the two cell module assembly of FIG. 22 .
- FIG. 3 is a perspective view of a battery pack according to an embodiment of the present invention
- FIG. 4 is a partially exploded perspective view of the battery pack of FIG. 3
- FIG. 5 is a perspective view showing two cell module assemblies and a BMS assembly in FIG. 4 6 is a cross-sectional view of a battery pack according to an embodiment of the present invention.
- a battery pack 10 includes a cell module assembly 100 , a BMS assembly 200 and a pack case 300 .
- the pack case 300 includes a middle case 310 , an upper cover 320 and a lower cover 330 .
- the middle case 310 may have a hollow shape having upper and lower ends open and allowing the cell module assembly 100 and the BMS assembly 200 coupled to the lower side to be integrally inserted into the interior in a sliding manner. there is.
- the upper cover 320 and the lower cover 330 may be coupled to the open upper and lower ends of the middle case 310 and cover the upper and lower ends of the middle case 310 , respectively.
- the middle case 310 it is provided with a metal material such as aluminum (A1) as a material having high mechanical rigidity and excellent heat dissipation to protect the cell module assembly 100 and the BMS assembly 200 from external impact. It can be.
- the battery pack 10 may be configured to accommodate two cell module assemblies 100 coupled to the pack case 300 as shown in FIG. 5 .
- Each of the two cell module assemblies 200 includes a plurality of battery cells 110 .
- the battery cell 110 may be a cylindrical secondary battery.
- the cylindrical battery cell 110 is sealed by placing an electrolyte solution and an electrode assembly in a cylindrical battery can, placing a top cap 112 on the upper open end of the battery can, and crimping the upper open end of the battery can. it may have been
- the cylindrical battery cell 110 may have an electrode assembly wound in a jelly-roll shape with a separator interposed between the positive electrode plate and the negative electrode plate, and a positive electrode tab is attached to the positive electrode plate and the positive electrode tab is connected to the top cap 112.
- can A negative electrode tab may be attached to the negative electrode plate, and the negative electrode tab may be connected to the battery can.
- the two cell module assemblies 100 may be configured so that the top caps 112 of the cylindrical battery cells 110 face each other. 4 to 6, in the two cell module assembly 100, the top cap 112 of each battery cell 110 faces the central portion of the battery pack 10, and the top cap 112 of each battery cell 110
- the bottom of the battery can may be configured to face the outer portion of the battery pack 10 .
- the two cell module assembly 100 includes a first cell module assembly 100A on the left side and a second cell module assembly 100B on the right side in FIG. 5, and as shown in FIG.
- the first cell module assembly 100A may be disposed so that the top caps 112 of all the cylindrical battery cells 110 included therein face to the right, and the bottom surface of the battery can faces to the left.
- the second cell module assembly 100B may be disposed so that the top caps 112 of all the cylindrical battery cells 110 included therein face to the left, and the bottom surface of the battery can faces to the right.
- the battery pack 10 since components for electrical connection and components for voltage/temperature sensing are located in the central region of the battery pack 10, durability against external impact and electrical safety are improved. can be increased
- the bottom surface of all the cylindrical battery cells 110 included in the two-cell module assembly 100 may be disposed to face the wall surface of the middle case 310 closely, so that the rows of the cylindrical battery cells 110 are disposed in the middle.
- the case 310 can easily dissipate heat.
- heat is transferred from the cylindrical battery cells 110 to the middle case 310 more quickly by placing a thermally conductive material or a heat dissipation pad 170 in the space between the bottom surface of the cylindrical battery cells 110 and the middle case 310. can make it go away.
- the battery pack 10 according to the present invention has a simple heat dissipation structure of the battery cells 110 and is very effective.
- FIG. 7 is a perspective view of the first cell module assembly 100A of FIG. 5
- FIG. 8 is a view showing the cell frame 120 of the first cell module assembly 100A of FIG. 7
- FIG. 9 is a view of the first cell module assembly 100A of FIG. It is a diagram showing an exemplary configuration in which the battery cells 110 are accommodated in the cell frame 120.
- first cell module assembly 100A and the second cell module assembly 100B included in the battery pack 10 of the present invention have substantially the same main components, the first cell module assembly 100A
- the description of the second cell module assembly 100B is replaced with the description of .
- the cell module assembly 100 includes a plurality of battery cells 110, a cell frame 120, a bus bar plate 130, and a sensing unit ( 140).
- the plurality of battery cells 110 are cylindrical secondary batteries in which the top cap 112 is coupled to the upper end of the battery can, and the upper end of the battery can, that is, the top cap 112, is all facing the same direction as the cell frame. (120) is accepted.
- the battery cells 110 may be placed upright inside the cell frame 120 in a state where the upper ends of battery cans are partially inserted into the cell holders 121a inside the cell frame 120 and held.
- the cell frame 120 may be provided in a substantially rectangular box shape with one side open.
- the cell frame 120 includes an accommodating part 121 forming a space in which the battery cells 110 can be erected and stored, an upper plate part 122 located in the direction of the upper end of the battery can, and a part in the direction of the lower end of the battery can. It includes an open part 123 located and a side part 124 forming a four-sided wall.
- the accommodating part 121 refers to the inner space of the cell frame 120 surrounded by the top plate part 122 and the side part 124, and is configured to have a height corresponding to the length (or height) of the battery cells 110. It can be.
- the cell frame 120 of this embodiment may be provided in a form in which the side portions 124 of the four sides are extended by the length of the cylindrical battery cell 110 .
- the upper plate portion 122 of the cell frame is a cell frame supporting the battery cells 110 under the top cap 112 when the top cap 112 is erected downward ( 120) and has terminal connection holes 122a.
- the terminal connection holes 122a may be configured so that upper ends of battery cans of all battery cells 110 are partially exposed to the outside of the upper plate portion 122 of the cell frame. Through these terminal connection holes 122a, all battery cells 110 are accommodated in the cell frame 120, and the top cap 112 of each battery cell 110 and the upper edge 111a of the battery can are It may be partially exposed to the outside of the upper plate portion 122 of the cell frame.
- the positive electrode tab connected to the electrode assembly inside is connected to the top cap 112 and the negative electrode tab is connected to the bottom of the battery can so that the top cap 112 is connected to the positive terminal of the battery cell 110.
- the battery can functions as the negative terminal.
- the battery can may be wrapped with an insulating sheet so that only the bottom or top edge of the battery can function as a negative electrode terminal.
- the top cap 112 of each battery cell 110 or the top edge of the battery can Battery cells may be connected in series and/or in parallel by connecting 111a to the bus bar plates 130 disposed on the outer surface of the upper plate 122 of the cell frame according to a predetermined pattern. A more detailed description of the electrical connection configuration of the battery cells 110 will be described later.
- the opening part 123 of the cell frame is provided on the opposite side of the upper plate part 122 of the cell frame, and as shown in FIG. 8, only the outer edge portion remains and the inner area is completely open. According to the opening 123 of the cell frame, during the assembling process of inserting the cylindrical battery cell 110, the opening 123 of the cell frame 120 is directed upward and a cell insertion jig (not shown) is used.
- the cylindrical battery cells 110 may be integrally inserted into the cell frame 120 by using.
- the cell module assembly 100 further includes a cell spacer 150 .
- the cell spacer 150 is a component applied to prevent movement of the lower ends of the battery cells 110 accommodated in the cell frame 120 and to maintain a gap therebetween.
- the battery cells 110 stored in the cell frame 120 stand upright inside the cell frame 120 in a state in which the upper ends of each battery can are partially inserted into the cell holders 121a in the accommodating part 121 and held. disposed, and the lower end of each battery can may be held by the cell spacer 150 .
- the cell spacer 150 is an insulating material and has a plate-like shape detachable from the outer edge portion forming the circumference of the open portion 123 of the cell frame, and as shown in FIG. 10, a plurality of spacer holes 151 to provide The spacer hole 151 may have a diameter corresponding to that of the battery can and may be formed to surround the lower end of the battery can.
- the cell spacer 150 is installed in the opening 123 of the cell frame to block the movement of the battery cells 110 even when external shock or vibration is applied to the cell frame 120, thereby preventing battery candles. It is possible to prevent the lower ends from contacting or colliding with each other.
- the cell module assembly 100 covers the cell spacer 150 and the lower end of a battery can and is coupled to the opening 123 of the cell frame 120. It further includes a heat transfer member to be.
- the heat transfer member may include a heat dissipation pad 170 and/or a heat dissipation sheet.
- the heat transfer member may be configured to contact the wall surface of the middle case 310 . According to this configuration, the heat of the battery cell 110 can be effectively dissipated to the middle case 310 through the heat transfer member.
- FIG. 13 is a view of the upper plate portion 122 of the cell frame, which is the opposite side of the embodiment of FIG. 12, and FIG. 14 is a view of the upper plate portion 122 and the side portion 124 of the cell frame in the first cell module assembly 100A of FIG. 13 15 is a view showing the top plate part 122 and the side part 124 of the cell frame of FIG. 14 viewed from different angles.
- the plurality of bus bar plates 130 may be disposed on one outer surface of the cell frame 120, that is, on the upper plate portion 122 of the cell frame.
- the positive bus bar plate 130+ is disposed at the end of the +Z direction
- the negative bus bar plate 130- is disposed at the end of the -Z direction
- the positive bus bar plate 130+ and the negative bus bar plate 130+ are disposed.
- Bus bar plates 130 may be disposed at predetermined intervals in the ⁇ Z direction between the bar plates 130-.
- bus bar plates 130 move in the ⁇ Y direction in a straight line or zigzag form to avoid positions of terminal connection holes 122a or protrusions 122f formed in the upper plate 122 of the cell frame. It may be provided in an extended form.
- the plurality of bus bar plates 130 are wire-bonded with the top caps 112 of the battery cells 110 exposed through the terminal connection holes 122a or the upper rim 111a of the battery can, so that the battery cells 110 ) serves to electrically connect them.
- wire bonding means that both ends of the metal wire (W) are pressed to the object to be bonded by ultrasonic waves.
- other bonding techniques such as laser welding, may be applied to the wire bonding, although not necessarily ultrasonic waves.
- the top cap 112 is wire-bonded to the positive bus bar plate 130+, and the battery The upper edge 111a of the can is wire-bonded to the second bus bar plate 130 adjacent to the positive bus bar plate 130+ in the -Z direction.
- the top cap 112 is wire bonded to the second bus bar plate 130, and the upper edge 111a of the battery can is in the -Z direction. wire bonded to the third bus bar plate 130.
- the top cap 112 of the battery cells 110 or the upper edge 111a of the battery can is wire-bonded to the corresponding bus bar plates 130, and finally, the last one indicated by 'C7' in FIG.
- the battery cells 110 included in the cell module assembly 100 are connected in series and in the form of 7S6P. can be connected in parallel.
- the positive bus bar plate 130+ may function as a positive terminal of the cell module assembly 100 and the negative bus bar plate 130 - may function as a negative terminal of the cell module assembly 100 .
- the sensing unit 140 includes a printed circuit board 141, a plurality of sensing plates 142, and a temperature sensing member 143.
- the sensing unit 140 is disposed on the other outer surface of the cell frame 120 where the electrical connection to the battery cells 110 intersects the upper plate 122 of the cell frame configured as described above, and the bus bar plate ( 130) and is electrically connected by wire bonding to sense the voltage information of the battery cells 110.
- the printed circuit board 141 a rigid printed circuit board 141 and a flexible printed circuit board 141 may be employed.
- the cell module assembly 100 of this embodiment includes a rigid printed circuit board 141 to enhance durability, and the printed circuit board 141 has a circuit pattern for transmitting voltage information or temperature information of the battery cells 110. to provide
- the printed circuit board 141 may be detachably attached to the side part 124 of the cell frame 120 .
- the printed circuit board 141 is the side surface of the cell frame 120 crossing the upper plate 122 of the cell frame on which the bus bar plates 130 are disposed. (124).
- the printed circuit board 141 is configured so that the plate surface faces the side surface 124 of the cell frame 120 and the upper edge of the printed circuit board 141 is positioned at the same height as the top plate 122 of the cell frame. It can be.
- the side part 124 of the cell frame 120 is provided so that the printed circuit board 141 can be disposed on the side part 124 of the cell frame 120, and the printed circuit board 141 is attached to the cell frame 120.
- a substrate mounting holder 127 is included.
- the substrate mounting holder 127 is provided at predetermined intervals along the length direction (Z direction) of the cell frame 120, and interferes with the temperature sensing member 143 or cable connector 146 on the printed circuit board 141. It may be provided on the side part 124 of the cell frame 120 so that it does not.
- the plurality of sensing plates 142 are components connected to the bus bar plates 130 by wire bonding in order to sense voltages for each bank of battery cells 110 (battery cells 110 connected in parallel). .
- the plurality of sensing plates 142 may be provided in a number corresponding to the bus bar plates 130 one-to-one and connected to the corresponding bus bar plates 130 through wire bonding.
- the sensing plates 142 may be made of an electrically conductive metal such as nickel, copper (Cu), or silver (Ag).
- the plurality of sensing plates 142 are provided in a structure bent at least once, one side is fixedly coupled to the printed circuit board 141 and the other side is the cell frame 120 on which the bus bar plates 130 are disposed. It can be arranged side by side on the surface of the upper plate portion 122 of.
- the plurality of sensing plates 142 are made of electrically conductive metal and are provided in an approximate 'L' or 'L' shape, and are coupled to the printed circuit board 141 as shown in the exemplary embodiment of FIGS. 16 to 17.
- the sensing plate 142 is bent and extended from the board connection part 142a facing the plate surface of the printed circuit board 141 and the board connection part 142a to the edge of one outer surface of the cell frame 120. It includes a frame mounting portion 142b that can be placed face to face. According to this configuration, as shown in FIG.
- the frame mounting portions 142b of the sensing plates 142 may be disposed to face the edge of the upper plate portion 122 of the cell frame.
- the frame mounting portions 142b of the sensing plates 142 are disposed alternately with one end of the bus bar plates 130 at the edge of the cell frame 120. It can be.
- the bus bar plates 130 widely distributed in the inner region of the edge of the upper plate 122 of the cell frame do not interfere with the wire bonding area connecting the battery cells 110 and the corresponding bus bar plates ( 130), the sensing plate 142 and the bus bar plate 130 can be connected as much as possible even with a short metal wire (W).
- the bus bar plate 130 and the sensing plate 142 may be connected by two metal wires (W). In this case, voltage sensing is possible even if one of the two metal wires W is disconnected, so reliability and durability of voltage sensing can be increased.
- the metal wire (W) connecting the battery cell 110 and the bus bar plate 130 or the sensing plate 142 and the bus bar plate 130 according to the present embodiment has a diameter of 0.12 mm to 0.8 mm and a length of It is 5mm to 10mm and can be provided with aluminum material. According to the configuration as described above, the metal wire W can operate as a fuse when the battery pack 10 is externally short-circuited.
- the metal wire W is configured as described above, so that, for example, when a current of 47.4 A or more flows, the metal wire W of at least one bank of battery cells 110 All of them may be cut off so that the flow of current to the cell module assembly 100 may be blocked.
- the metal wire (W) can be appropriately selected in diameter and length as needed, and its material may also be made of a metal such as copper or nickel.
- the temperature sensing member 143 includes two temperature sensing members 143A and 143B having different lengths.
- the relatively long temperature sensing member 143 is the first temperature sensing member 143A used to measure the central temperature of the cell module assembly 100 and has a relatively long length.
- the short temperature sensor is the second temperature sensing member 143B used to measure the outside temperature of the cell module assembly 100 .
- the first temperature sensing member 143A includes a first cable 144a extending from the printed circuit board 141 by a predetermined length and a first thermistor 144b coupled to an end of the first cable 144a. do.
- the second temperature sensing member 143B includes a second cable 145a extending from the printed circuit board 141 by a predetermined length and a second thermistor 145b coupled to an end of the second cable 145a. do.
- the first cable 144a is longer than the second cable 145a, and the first cable 144a and the second cable 145a extend in opposite directions.
- the battery pack 10 needs to accurately sense heat generated from the battery cells 110 during charging and discharging, and manage charging and discharging accordingly or cool it. Otherwise, the deterioration rate of the battery cells 110 is increased and performance is deteriorated.
- FIG. 18 is a reference diagram for explaining the measured temperature distribution during discharging of the battery cells 110 included in the first cell module assembly 100A according to an embodiment of the present invention, Table 1 and Table 2 according to FIG. 18 It sorted out the results.
- the temperature of the battery cell 110 with the highest temperature among the battery cells 110 and the battery cell 110 with the lowest temperature It is necessary to accurately determine the temperature of
- the cell module assembly 100 has the highest temperature among the battery cells 110 included in the cell module assembly 100 based on the above test results (see FIG. 18) 5 It is configured to measure the temperature of the burnt battery cell 110 with the first temperature sensing member 143A.
- a predetermined battery cell 110 the fifth battery cell 110 in this embodiment
- the first thermistor 144b A temperature sensing hole 122b is formed on the surface of the upper plate 122 of the cell frame so that the first thermistor 144b can be inserted from the outside to the inside of the cell frame 120 .
- a temperature sensing hole 122b is provided in the upper plate 122 of the cell frame corresponding to the position of the fifth battery cell 110 .
- the first thermistor 144b of the first temperature sensing member 143A is inserted into the inside of the cell frame 120, that is, into the accommodating portion 121 of the cell frame 120 through the temperature sensing hole 122b. The temperature is sensed by contacting the outer periphery of the fifth battery cell 110 .
- a portion of the first cable 144a of the first temperature sensing member 143A is wired from the edge of the upper plate 122 of the cell frame to the position of the temperature sensing hole 122b.
- a plurality of cable guide ribs 122c, 122d, and 122e protrude from the upper plate 122 of the cell frame, so that the first cable 144a is routed at the edge of the upper plate 122 of the cell frame at the temperature. It can be wired in a straight line without bending up to the sensing hole 122b.
- the plurality of cable guide ribs 122c, 122d, and 122e may be configured to protrude on the straight wiring path of the first cable 144a, as in the embodiment of FIG.
- the plurality of cable guide ribs 122c, 122d, and 122e include an inlet support rib 122e provided near the circumference of the temperature sensing hole 122b.
- the inlet support rib 122e supports the portion K1 immediately before being introduced into the temperature sensing hole 122b from the first cable 144a at a predetermined height from the surface of the upper plate 122 of the cell frame. play a role
- the first cable 144a do not need to bend That is, the first cable 144a is spaced apart from the surface of the upper plate 122 of the cell frame by the plurality of cable guide ribs 122c, 122d, and 122e, and the upper end of the battery cell 110 or the bus bar plate 130 or a metal wire (W) may be wired in a straight line.
- the plurality of cable guide ribs 122c, 122d, and 122e prevent the left and right movement of the first cable 144a, thereby preventing the first thermistor 144b from departing from its original position.
- the second temperature sensing member 143B may be configured to measure the temperature of one battery cell 110 among battery cells 110 located in an outer region of the cell module assembly 100 .
- the side part 124 of the cell frame 120 crossing the upper plate part 122 of the cell frame has a side cutout 128 formed therethrough.
- the side of the battery cell 110 located in the outermost part of the cell frame 120, that is, the accommodating part 121, may be exposed to the outside through the side cutout 128.
- the second cable 145a of the second temperature sensing member 143B extends from the printed circuit board 141 to the position of the side cutout 128, and the second thermistor 145b extends through the side cutout 128. It may be configured to contact the side of the battery cell 110 exposed through. At this time, a thermally conductive adhesive (not shown) may be used to stably fix the second thermistor 145b to the side of the battery cell 110 .
- voltage information and temperature information of the battery cells 110 included in the cell module assembly 100 are sensed, and the voltage information and temperature information are transmitted from the printed circuit board 141 to the cable connector. It may be transmitted to the BMS assembly 200 through 146.
- 21 and 22 are views showing before and after assembly of two cell module assemblies 100A and 100B according to an embodiment of the present invention.
- the battery pack 10 includes two cell module assemblies 100A and 100B.
- the two cell module assemblies 100A and 100B may be configured so that the cell frames 120 may be coupled so that the upper plates 122 of the cell frames face each other.
- the upper plate 122 of any one of the two cell frames 120 includes one or more protrusions 122f protruding in the coupling direction
- the upper plate portion 122 may include one or more space maintaining columns 122g protruding in a coupling direction and provided to insert the protrusions 122f inside. That is, a plurality of protrusions 122f are provided on the upper plate portion 122 of the cell frame of the first cell module assembly 100A, and the gap is maintained on the upper plate portion 122 of the cell frame of the second cell module assembly 100B.
- Columns 122g may be provided to correspond to the number and positions of the protrusions 122f.
- the protrusions 122f of the first cell module assembly 100A are press-fitted and coupled to the spacing maintaining columns 122g of the second cell module assembly 100B.
- the first cell module assembly 100A and the second cell module assembly 100B maintain a constant distance from each other as shown in 'D1' shown in FIG. 22 by the coupled protrusions 122f and the space maintaining column 122g. and can be coupled without relative flow. Therefore, the wire bonding area formed on the upper plate portion 122 of the cell frame of the first cell module assembly 100A and the wire bonding area formed on the upper plate portion 122 of the cell frame of the second cell module assembly 100B do not contact each other. And, as shown in FIG.
- two cell module assemblies 100 physically coupled to each other may be serially connected to each other by an interconnection bus bar 180 .
- the interconnection bus bar 180 is placed in contact with the positive bus bar plate 130+ of the first cell module assembly 100A and the negative bus bar plate 130- of the second cell module assembly 100B.
- the battery cells 110 included in the battery pack 10 according to the present embodiment may be connected in series and parallel in a 14S6P form.
- the two cell module assemblies 100A and 100B have the BMS assembly 200 coupled to the lower side and can be inserted into the middle case 310 in a sliding manner, and the upper cover 320 is formed on the top of the middle case 310. may be coupled, and the lower cover 330 may be coupled to the lower end of the middle case 310 .
- the top caps 112 of the battery cells 110 included in the first cell module assembly 100A are at the center of the battery pack 10. portion and the bottom of the cell can faces the outer portion of the battery pack 10. Also, the top cap 112 of the battery cells 110 included in the second cell module assembly 100B faces the central portion of the battery pack 10 and the bottom of the battery can faces the outer portion of the battery pack 10. do.
- components such as the bus bar plates 130 for electrical connection or voltage/temperature sensing, the sensing unit 140, and the metal wire W are located in the central area of the pack case 300, thereby protecting against external impact. Durability and electrical safety can be increased.
- the bottom surfaces of all the cylindrical battery cells 110 included in the two-cell module assembly 100 are located close to the wall of the pack case 300, the rows of the cylindrical battery cells 110 are transferred to the middle case 310. Can be easily dissipated.
- the battery pack according to the present invention may be applied to means of transportation such as electric scooters and electric vehicles. That is, the electric scooter or electric vehicle according to the present invention may include one or more battery packs according to the present invention.
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Abstract
Description
Claims (22)
- 복수의 전지셀들;상기 복수의 전지셀들을 수용하는 셀 프레임;상기 셀 프레임의 외측 일면에 배치되고 상기 복수의 전지셀들을 전기적으로 연결하는 버스바 플레이트들; 및상기 셀 프레임의 외측 타면에 배치되고 상기 버스바 플레이트들과 와이어 본딩되어 전기적으로 연결되는 센싱 유닛을 포함하는 것을 특징으로 하는 셀 모듈 어셈블리.
- 제1항에 있어서,상기 센싱 유닛은,상기 셀 프레임에 착탈 결합되는 인쇄회로기판;상기 인쇄회로기판에 결합되고 상기 버스바 플레이트들과 와이어 본딩된 복수의 센싱 플레이트들; 및상기 인쇄회로기판에 결합되고 소정 거리 이격된 상기 전지셀들 중 하나 이상의 전지셀의 온도를 측정하는 온도 센싱부재;를 포함하는 것을 특징으로 하는 셀 모듈 어셈블리.
- 제2항에 있어서,상기 복수의 센싱 플레이트들은, 상기 버스바 플레이트들과 일대일 대응하는 개수로 구비되고 각각 대응하는 상기 버스바 플레이트들과 와이어 본딩으로 연결된 것을 특징으로 하는 셀 모듈 어셈블리.
- 제2항에 있어서,상기 인쇄회로기판은 상기 버스바 플레이트들이 배치된 상기 셀 프레임의 외측 일면과 교차하는 상기 셀 프레임의 측면부에 배치된 것을 특징으로 하는 셀 모듈 어셈블리.
- 제4항에 있어서,상기 셀 프레임의 측면부는 상기 인쇄회로기판을 상기 셀 프레임의 측면부와 나란하게 소정 깊이까지 끼워넣을 수 있고 상기 인쇄회로기판의 판면이 상기 셀 프레임의 측면부에 밀착되게 상기 인쇄회로기판을 지지하는 기판 거치홀더를 포함하는 것을 특징으로 하는 셀 모듈 어셈블리.
- 제2항에 있어서,상기 복수의 센싱 플레이트들은, 각각적어도 1회 절곡된 구조로 마련되어 일측은 상기 인쇄회로기판에 고정 결합되고 타측은 상기 버스바 플레이트들이 배치된 상기 셀 프레임의 외측 일면에 나란하게 배치된 것을 특징으로 하는 셀 모듈 어셈블리.
- 제2항에 있어서,상기 복수의 센싱 플레이트들은, 각각상기 인쇄회로기판에 부착되는 기판 연결부;와상기 기판 연결부에서 연장되어 상기 셀 프레임의 외측 일면 가장자리에 배치되는 프레임 안착부를 포함하는 것을 특징으로 하는 셀 모듈 어셈블리.
- 제7항에 있어서,상기 버스바 플레이트들의 일단부와 상기 센싱 플레이트들의 프레임 안착부는 서로 교번적으로 이웃하게 배치된 것을 특징으로 하는 셀 모듈 어셈블리.
- 제2항에 있어서,각 상기 버스바 플레이트와 각 상기 센싱 플레이트는 2가닥의 금속 와이어에 의해 연결된 것을 특징으로 하는 셀 모듈 어셈블리.
- 제2항에 있어서,상기 전지셀들은 전극 조립체를 내장한 전지 캔과 상기 전지 캔의 상단부에 결합되는 탑 캡을 구비한 원통형 전지셀들이고,상기 전지셀들은 상기 전지 캔의 상단부가 모두 같은 방향을 향하도록 상기 셀 프레임에 수용된 것을 특징으로 하는 셀 모듈 어셈블리.
- 제10항에 있어서,상기 셀 프레임은, 일면이 개방된 박스 형상으로 마련되고상기 전지셀들을 세워서 수납할 수 있는 공간을 형성하며 상기 전지셀들의 길이에 대응하는 높이를 갖도록 마련된 수용부;상기 전지 캔의 상단부 방향에 위치한 상판부; 및상기 전지 캔의 하단부 방향에 위치한 개방부를 포함하고,상기 상판부는 상기 전지 캔의 상단부를 부분적으로 노출시키는 단자 연결홀들을 구비하는 것을 특징으로 하는 셀 모듈 어셈블리.
- 제11항에 있어서,상기 셀 프레임의 상판부의 외측면에 상기 버스바 플레이트들이 부착되고,상기 버스바 플레이트들은,상기 단자 연결홀들을 통해 노출된 각 상기 전지셀들의 상기 탑 캡 또는 상기 전지 캔의 상단 테두리와 와이어 본딩된 것을 특징으로 하는 셀 모듈 어셈블리.
- 제11항에 있어서,상기 온도 센싱부재는, 일단부가 상기 셀 프레임의 내부로 삽입 배치되는 제1 온도 센싱부재를 포함하고,상기 제1 온도 센싱부재는 상기 인쇄회로기판에서 소정 길이만큼 연장되는 제1 케이블;과 상기 제1 케이블의 말단에 결합되는 제1 써미스터를 구비하고,상기 제1 써미스터는 상기 셀 프레임의 상판부에 관통 형성된 온도 센싱홀을 통해 상기 수용부에 삽입 배치되고 상기 전지셀과 접촉하는 것을 특징으로 하는 셀 모듈 어셈블리.
- 제13항에 있어서,상기 제1 써미스터가 접촉하는 상기 전지셀은, 상기 셀 프레임의 내부에서 중심 영역에 있는 전지셀 중 하나인 것을 특징으로 하는 셀 모듈 어셈블리.
- 제14항에 있어서,상기 셀 프레임의 상판부는상기 인쇄회로기판에서 상기 온도 센싱홀까지 직선으로 배선되게 상기 제1 케이블의 직선 배선 경로 상에 돌출 형성되는 복수의 케이블 가이드 리브를 포함하는 것을 특징으로 하는 셀 모듈 어셈블리.
- 제15항에 있어서,상기 복수의 케이블 가이드 리브는,상기 제1 케이블에서 상기 온도 센싱홀에 인입되기 직전 부위를 상기 셀 프레임의 상판부의 표면에서 소정 높이로 이격되게 지지하는 인입부 지지리브를 포함하는 것을 특징으로 하는 셀 모듈 어셈블리.
- 제11항에 있어서,상기 온도 센싱부재는, 상기 셀 프레임의 상판부와 교차하는 상기 셀 프레임의 외측 타면에 관통 형성된 측부 절개공까지 일단부가 연장되는 제2 온도 센싱부재를 포함하고,상기 제2 온도 센싱부재는 상기 인쇄회로기판에서 소정 길이만큼 연장되는 제2 케이블;과 상기 제2 케이블의 말단에 결합되는 제2 써미스터를 구비하고,상기 제2 써미스터는 상기 측부 절개공을 통해 상기 수용부에서 최외곽에 위치한 전지셀의 측부에 접촉하게 배치된 것을 특징으로 하는 셀 모듈 어셈블리.
- 제1항 내지 제17항 중 어느 한 항에 따른 셀 모듈 어셈블리를 포함하는 배터리 팩으로서, 상기 전지셀들은 전극 조립체를 내장한 전지 캔과 상기 전지 캔의 상단부에 결합되는 탑 캡을 구비한 원통형 전지셀들이고, 상기 전지셀들은 상기 전지 캔의 상단부가 모두 같은 방향을 향하도록 상기 셀 프레임에 수용되고,상호 간의 상기 전지셀들의 탑 캡들이 서로 마주하도록 상호 간의 상기 셀 프레임들이 결합된 2개의 상기 셀 모듈 어셈블리;2개의 상기 셀 모듈 어셈블리의 일측에 결합된 BMS 어셈블리; 및상기 2개의 상기 셀 모듈 어셈블리와 상기 BMS 어셈블리를 일체로 수용하는 팩 케이스를 포함하는 것을 특징으로 하는 배터리 팩.
- 제18항에 있어서,상기 셀 프레임들은, 각각 상기 전지셀들의 탑 캡들과 대향하는 면인 프레임 상판부를 포함하고,서로 마주보는 2개의 상기 셀 프레임들 중 어느 하나의 셀 프레임의 상판부는 결합 방향으로 돌출 형성된 하나 이상의 돌기를 구비하고, 다른 하나의 셀 프레임의 상판부는 결합 방향으로 돌출 형성되고 상기 돌기를 내측에 끼울 수 있게 마련된 하나 이상의 간격유지 컬럼을 구비하는 것을 특징으로 하는 배터리 팩.
- 제18항에 있어서,상기 셀 프레임들은, 각각 상기 전지셀들의 탑 캡들과 대향하는 면인 프레임 상판부를 포함하고,상기 2개의 셀 모듈 어셈블리는,상기 셀 프레임의 상판부에 상기 버스바 플레이트들이 배치되고,상기 셀 프레임의 상판부와 교차하는 상기 셀 프레임의 측부에 상기 센싱 유닛이 배치된 것을 특징으로 하는 배터리 팩.
- 제18항에 따른 배터리 팩을 포함하는 전기 스쿠터.
- 제18항에 따른 배터리 팩을 포함하는 전기 자동차.
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KR20110016820A (ko) * | 2009-08-12 | 2011-02-18 | 삼성에스디아이 주식회사 | 방열 효율이 향상된 팩 전지 |
JP4733248B2 (ja) * | 2000-06-20 | 2011-07-27 | 本田技研工業株式会社 | セルモジュール構造 |
KR20200021791A (ko) * | 2018-08-21 | 2020-03-02 | 주식회사 엘지화학 | 버스바 플레이트를 포함하는 배터리 모듈 |
KR102239601B1 (ko) * | 2018-12-29 | 2021-04-13 | 몰렉스 엘엘씨 | 배터리 연결 모듈 |
CN113013540A (zh) * | 2019-12-18 | 2021-06-22 | 株式会社Lg化学 | 子电池组以及包括该子电池组的电池组和车辆 |
KR20210082679A (ko) | 2019-12-26 | 2021-07-06 | 대우조선해양 주식회사 | 멤브레인형 저장탱크 및 상기 멤브레인형 저장탱크의 누출 액화가스 회수 방법 |
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JP4733248B2 (ja) * | 2000-06-20 | 2011-07-27 | 本田技研工業株式会社 | セルモジュール構造 |
KR20110016820A (ko) * | 2009-08-12 | 2011-02-18 | 삼성에스디아이 주식회사 | 방열 효율이 향상된 팩 전지 |
KR20200021791A (ko) * | 2018-08-21 | 2020-03-02 | 주식회사 엘지화학 | 버스바 플레이트를 포함하는 배터리 모듈 |
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CN113013540A (zh) * | 2019-12-18 | 2021-06-22 | 株式会社Lg化学 | 子电池组以及包括该子电池组的电池组和车辆 |
KR20210082679A (ko) | 2019-12-26 | 2021-07-06 | 대우조선해양 주식회사 | 멤브레인형 저장탱크 및 상기 멤브레인형 저장탱크의 누출 액화가스 회수 방법 |
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