WO2023003307A1 - 셀 조립체 - Google Patents
셀 조립체 Download PDFInfo
- Publication number
- WO2023003307A1 WO2023003307A1 PCT/KR2022/010473 KR2022010473W WO2023003307A1 WO 2023003307 A1 WO2023003307 A1 WO 2023003307A1 KR 2022010473 W KR2022010473 W KR 2022010473W WO 2023003307 A1 WO2023003307 A1 WO 2023003307A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cell assembly
- printed circuit
- circuit board
- cell
- cover
- Prior art date
Links
- 239000002184 metal Substances 0.000 claims abstract description 30
- 229910052751 metal Inorganic materials 0.000 claims abstract description 30
- 238000009434 installation Methods 0.000 claims abstract description 15
- 230000004308 accommodation Effects 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 16
- 238000000926 separation method Methods 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 9
- 239000006260 foam Substances 0.000 claims description 5
- 230000035939 shock Effects 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 238000005452 bending Methods 0.000 description 7
- 239000003990 capacitor Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000013021 overheating Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
-
- 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
- H01M50/20—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
-
- 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
- H01M50/233—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
- H01M50/242—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 against vibrations, collision impact or swelling
-
- 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
- H01M50/284—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]
-
- 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
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
-
- 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
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/588—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries outside the batteries, e.g. incorrect connections of terminals or busbars
-
- 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
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
- H01M50/595—Tapes
-
- 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 cell assembly, and more particularly, to a cell assembly capable of safely protecting element members therein.
- a cell assembly has a detachable structure that can be freely attached to and separated from an external device or has a built-in structure embedded in an external device, depending on the type of external device.
- a cell assembly having a detachable structure is mainly used for external devices such as a laptop computer
- a cell assembly having a built-in structure is mainly used for external devices such as a smart phone or a smart pad.
- a device such as a protection circuit module (PCM) may be provided in the cell assembly.
- PCM protection circuit module
- the device since the durability of the device is low, the device may be easily damaged or damaged when the cell assembly is dropped or an external impact is applied to the cell assembly. Therefore, a problem in which the battery does not operate normally may occur because the device does not properly control the battery.
- Patent Document 1 An example of such prior art is presented in Patent Document 1 below.
- Patent Document 1 KR 10-1650030 B
- the present invention provides a cell assembly capable of reducing impact applied to internal element members.
- the present invention provides a cell assembly capable of improving durability by protecting internal element members.
- the present invention is composed of a first side frame and a lower frame case to form a receiving space on the upper side of the lower frame; a battery cell accommodated in the accommodating space; a cover composed of a second side frame and an upper frame, the second side frame coupled to the first side frame, and installed on the case to form an installation space between the lower part of the upper frame and the upper part of the battery cell; and an element member disposed in the installation space and spaced apart from the upper frame in the vertical direction.
- the element member is disposed closer to the battery cell than the upper frame to form a predetermined separation distance between the upper frame and the elements included in the element member.
- the element member may include a board installed on the battery cell; and elements spaced apart from the upper frame in the vertical direction and installed on the board so as to form a space capable of absorbing impact.
- a predetermined separation distance formed between the upper frame and the element is 0.3 mm or more and 0.7 mm or less.
- At least a portion of the support member can be stretched and contracted in a vertical direction so as to absorb an impact.
- the support member forms a path through which heat is transferred from the element member to the cover.
- the board includes a printed circuit board, and the device includes a capacitor and a thermistor.
- the board is a printed circuit board
- a hole is provided in the center
- the upper end of the metal plate installed on the printed circuit board is caught on the upper surface of the printed circuit board
- the lower end is It is configured to be exposed to the lower surface of the printed circuit board through a hole
- the unit cell is located under the printed circuit board and has a welding portion welded to at least a portion of the metal plate exposed through the hole.
- the metal plate is in direct contact with the inside of the hole of the printed circuit board, and the upper end of the metal plate is spaced apart from the upper edge of the printed circuit board by a predetermined distance.
- the present invention it is possible to reduce the impact applied to the element member inside the cell assembly by an external force.
- the life of the cell assembly can be extended and maintenance can be facilitated.
- FIG. 1 is a view showing the structure of a cell assembly according to an embodiment of the present invention.
- FIG. 2 is a view showing a structure in which an element according to an embodiment of the present invention is spaced apart from a cover.
- FIG 3 is a view showing a structure in which a support member according to an embodiment of the present invention is installed between a cover and a board.
- FIG. 4 is a view showing a structure in which a support member is installed between a cover and a board according to another embodiment of the present invention.
- FIG. 5 is a view showing a structure in which a support member is formed together with a cover according to the present invention.
- FIG. 6 is a conceptual diagram showing a conventional cylindrical cell assembly.
- FIG. 7 is a conceptual diagram illustrating an exemplary cylindrical cell assembly according to the present invention.
- FIG. 1 is a view showing the structure of a cell assembly according to an embodiment of the present invention
- FIG. 2 is a view showing a structure in which an element is spaced apart from a cover according to an embodiment of the present invention.
- a cell assembly according to an embodiment of the present invention is a device that provides power to an electronic device.
- a cell assembly 100 includes a case 110 , a battery cell 120 , a cover 130 , and a device member 140 .
- the case 110 is composed of a first side frame 111 and a lower frame 112 .
- the first side frame 111 forms the circumference of the outer side of the case 110
- the lower frame 112 is connected to the lower portion of the first side frame 111 to form the lower portion of the outer shape of the case 110.
- an accommodation space may be formed on the upper side of the lower frame 112 . That is, the space surrounded by the lower frame 112 and the first side frame may be an accommodation space.
- the case may be manufactured in the form of a pouch, an accommodation space may be formed therein, and a first opening may be formed by opening an upper surface thereof.
- the shape and structure of the case 110 is not limited thereto and may vary.
- the battery cell 120 is accommodated in an accommodation space inside the case 110 .
- the battery cell 120 may be formed in a rectangular plate shape along the shape of the accommodation space, and the volume of the battery cell 120 may be less than or equal to the volume of the accommodation space. Accordingly, the battery cell 120 may be inserted into the receiving space through the first opening.
- the battery cell 120 has a structure in which a cathode electrode and a cathode electrode are stacked with a separator interposed therebetween, and a lead portion including a cathode lead and a cathode lead is formed.
- the shape and structure of the battery cell 120 are not limited thereto and may vary.
- the cover 130 is composed of a second side frame 131 and an upper frame 132 .
- the second side frame 131 forms a side circumference of the outer shape of the cover 130
- the upper frame 131 is connected to the upper portion of the second side frame 131 to form an upper portion of the outer shape of the cover 130.
- an installation space may be formed between the lower part of the upper frame 132 and the upper part of the battery cell 120 . That is, the space surrounded by the lower part of the upper frame 132, the upper part of the battery cell 120, and the second side frame 131 may be the installation space. Accordingly, the lower surface of the cover 130 may be opened to form a second opening.
- the cover 130 may be detachably installed on the case 110 . That is, the lower part of the second side frame 131 and the upper part of the first side frame 111 are coupled so that the inside of the cover 130 and the case 110 may be sealed. Since the first opening is formed on the upper surface of the case 110 and the second opening is formed on the lower surface of the cover 130, the accommodation space and the installation space S may communicate with each other through the openings.
- the shape and structure of the cover 130 is not limited thereto and may vary.
- the element member 140 is disposed in the installation space S inside the cover 130 .
- the element member 140 may be a protection circuit module (PCM), and a lead portion of the battery cell 120 may be electrically connected to it.
- PCM protection circuit module
- the device member 140 can detect an abnormal state of the battery cell 120, such as overcharging or overcurrent, and when the abnormal state of the battery cell 120 is detected, the battery cell 120 is controlled to charge the battery cell 120. ) can suppress or prevent heat generation or explosion.
- the element member 140 is spaced apart from the upper frame 132 of the cover 130 in the vertical direction in the installation space (S). Accordingly, the element member 140 is disposed closer to the battery cell 120 than the upper frame 132, so that a predetermined separation distance is maintained between the element 142 provided in the element member 140 and the upper frame 132. can form Therefore, when an external force is applied to the cover 130, it is possible to prevent a direct impact from being applied to the element 142, and thus damage to the element 142 can be suppressed or prevented.
- the element member 140 includes a board 141 and an element 142 .
- the board 141 may be installed on the battery cell 120 .
- the board 141 may be a printed circuit board (PCB). Accordingly, the lead portion of the battery cell 120 and the element 142 may be mounted on the board 141 .
- An external input/output terminal (not shown) may be bonded to the board 141 to be electrically connected to an external electronic device that supplies power to the battery cell 120 or receives power from the battery cell 120 .
- the structure of the board 141 is not limited thereto and may vary.
- the device 142 may be mounted on the board 141 .
- the element 142 may be configured as a safety element made of an active element or a protection element in which direct circuits are formed, and overheating and explosion of the battery cell 120 caused by overcharging, overdischarging, or overcurrent can be prevented.
- the element 142 may include a capacitor 142a and a thermistor 142b.
- the element 142 is disposed to face the upper frame 132, and may be spaced apart from the upper frame 132 in the vertical direction. Accordingly, a space capable of absorbing an impact applied to the element 142 may be formed by the distance between the element 142 and the upper frame 132 . Accordingly, the element 142 may be protected by preventing an external force applied to the cover 130 from being directly transferred to the element 142 .
- the cover 130 when the cell assembly 100 falls and the cover 130 collides with the floor, the cover 130 is crushed by the distance between the element 142 and the wall of the cover 130 to absorb the impact. can do. Therefore, it is possible to minimize the impact generated when the cell assembly 100 is dropped to the device 142 . Accordingly, by stably protecting the element 142 , damage to the element 142 may be suppressed or prevented.
- the upper frame 132 and the element 142 may be 0.3 mm or more to 0.7 mm or less. If the vertical separation distance (B) between the upper frame 132 and the element 142 is less than 0.3 mm, since a sufficient space to absorb the impact applied to the element 142 is not formed, the element from external force (142) may not be safely protected.
- the vertical separation distance B between the upper frame 132 and the device 142 exceeds 0.7 m, the size of the cover 130 becomes too large, and space utilization of the cell assembly 100 may deteriorate. Therefore, it is possible to set a distance B between the upper frame 132 and the device 142 in the separation direction so as to stably protect the device 142 and prevent the space utilization of the cell assembly 100 from deteriorating. .
- the distance apart from the upper frame 132 may be set differently according to the elements 142 .
- the vertical length of the thermistor 142b may be longer than the vertical length of the capacitor 142a. That is, the vertical separation distance between the upper frame 132 and the thermistor 142b may be shorter than the vertical separation distance between the upper frame 132 and the capacitor 142a. Therefore, when the cover 130 is shocked and crushed, the upper frame 132 collides with the thermistor 142b having strong durability, and the thermistor 142b causes the upper frame 132 to reach the position of the capacitor 142a. The capacitor 142a may not collide with the upper frame 132 because it is not crushed. Thus, it is possible to more safely protect elements with weak durability.
- a method of setting the lengths of the elements 142 in one direction is not limited thereto and may vary.
- FIG. 3 is a view showing a structure in which a support member according to an embodiment of the present invention is installed between a cover and a board
- FIG. 4 shows a structure in which a support member according to another embodiment of the present invention is installed between a cover and a board.
- the cell assembly 100 may further include a support member 150 .
- the support member 150 is disposed in the installation space S together with the element member 140 .
- the support member 150 may extend vertically.
- the support member 150 is longer than the element 142 in the vertical direction, and may be installed between the board 141 and the wall of the cover 130 .
- the support member 150 may be formed in a circular bar shape. Since the support member 150 is longer than the element 142 in the vertical direction, the element 142 and the upper frame 132 move vertically by the difference in length between the support member 150 and the element 142 in the vertical direction. can be separated Therefore, the support member 150 can stably separate the upper frame 132 and the element 142. Therefore, even if an impact is applied to the cover 130, since the outer shape of the cover 130 can be stably maintained by the support member 150, transmission of the impact to the element 142 can be more effectively suppressed or prevented. there is.
- the support member 150 may be formed in a hollow shape. Therefore, while the support member 150 separates the upper frame 132 and the element 142, the weight can be reduced. Thus, an increase in the weight of the cell assembly 100 can be minimized.
- the formation and structure of the support member 150 is not limited thereto and may vary.
- a plurality of support members 150 may be provided.
- the element 142 is located in the center of the board 141, and the support members 150 are located in the outer part of the board 141 and may be disposed along the circumference of the board 141.
- the support members 150 support different parts of the upper frame 132, so that the cover 130 can maintain its outer appearance more stably.
- the structure in which the support members 150 are disposed is not limited thereto and may vary.
- the support member 150 may be made of a thermally conductive material. Accordingly, the support member 150 may form a path through which heat is transferred from the device member 140 to the cover 130 . Accordingly, heat generated from the device 142 or the battery cell 120 is transferred to the board 141, and the heat transferred to the board 141 is transferred to the cover 130 through the support member 150 to be transferred to the outside. may be released. Overheating of the device 142 or the battery cell 120 by the support member 150 can be effectively suppressed or prevented.
- heat in different regions of the element member 140 may be emitted to the outside through the different support members 150 . Accordingly, heat of the element member 140 can be uniformly discharged as a whole, and local overheating of the element 142 or the battery cell 120 can be suppressed or prevented.
- the support member 150' may be formed in a form in which at least a portion thereof is stretchable and contractible in the vertical direction.
- the support member 150' may be formed in the form of a spring capable of contracting vertically. Therefore, when an impact is applied to the cover 130, since the support member 150' can absorb the impact while contracting vertically in the installation space S, further suppressing or preventing the transmission of the impact to the element 142 can do.
- the vertical length at which the support member 150 ′ is maximally contracted may be longer than the vertical length of the element 142 . Therefore, even if the support member 150' is contracted, the wall of the cover 130 can be prevented from contacting the element 142, preventing the element 142 from colliding with the wall of the cover 130 and being damaged. can do.
- a plurality of spring-shaped support members 150' may be provided. Accordingly, since the support members 150' absorb impacts in different regions, the support members 150' can easily absorb the impact even when an impact is applied at any position of the cover 130. Accordingly, the support members 150' can more effectively suppress or prevent shock from being transmitted to the element 142.
- the support member 150' may be formed of a material capable of being stretched and contracted instead of being formed in the form of a spring, and various combinations are possible between the embodiments.
- the support member 150 can stably separate the upper frame 132 and the element member 140 from each other. Therefore, when the cover 130 receives an impact, the support member 150 can more effectively suppress or prevent the wall of the cover 130 from colliding with the element member 140 . Thus, by safely protecting the element member 140 inside the cell assembly 100, the life of the cell assembly 100 can be extended and maintenance can be facilitated.
- the support member 150 of the present invention may be integrally provided with the cover 130 as shown in FIG. 5 .
- the height of the integrally provided support member 150 from the upper frame 132 is an element protruding above the board 141 when the end extending farthest from the upper frame 132 is supported on the upper surface of the board 141 ( 142) to protect the elements from top impact.
- the support member 150 may have a lattice structure spaced apart from the inner circumference of the second side frame 131 by a predetermined interval. In this case, the support member 150 may perform a function of reinforcing the side rigidity of the cover 130 .
- the support member 150 of FIG. 5 does not come into contact with the upper surface of the board 141 at the end of the extension in the vertical direction from the upper frame 132 , and the side of the board 141 and It may extend into the space between the second side frames 131.
- the height of the support member 150 is substantially the same as that of the second side frame 131, and is formed integrally with the cover 130.
- the end of the vertical extension portion is coupled to and supported by the upper portion of the first side frame 111 together with the lower portion of the second side frame 131, or the battery cell ( 120) may be supported by the upper surface.
- the height of the support member 150 and the length of the second side frame 131 are greater than the sum of the height of the element 142 and the thickness of the board 141 .
- the present invention additionally, by improving the structure in which the metal plate 1200 is electrically connected to the printed circuit board (board), provides a cell assembly with supplemented rigidity, solves the disadvantage of being vulnerable to external impact, separate bending Assembly errors due to the bending process are prevented by not performing the process, and cost reduction and cost reduction are brought about by not using an insulating tape.
- FIG. 6 is a conceptual diagram illustrating a conventional cylindrical cell assembly.
- a conventional cylindrical cell assembly is composed of a unit cell 10, a metal plate 20, a printed circuit board 30, an insulating tape 40, a cap copper 50, and a foam tape 60. .
- the metal plate 20 is attached to the upper surface, side surface and Two bending processes were performed to surround the lower surface, and an insulating tape 40 was placed between the lower surface of the metal plate 20 and the printed circuit board 30 . Thereafter, the cap cupper 50 was assembled on the printed circuit board 30, and the foam tape 60 was adhered to the cap cover 50.
- the conventional cylindrical cell assembly has weak rigidity due to bending assembly tolerance, assembly strength, etc., and is vulnerable to external impact, and has a disadvantage in that cost increases due to the additional cost of the insulating tape 40.
- FIG. 7 is a conceptual diagram showing an exemplary cylindrical cell assembly according to the present invention.
- the cell assembly according to the present invention includes a printed circuit board 1100, a metal plate 1200, and a unit cell 1300.
- the printed circuit board 1100 is provided with a hole 1110 in the center.
- the printed circuit board 1100 is a part for SMTing circuit elements.
- the central hole 1110 is a part where the metal plate 1200 is installed (or assembled).
- the metal plate 1200 has an upper end 1210 caught on the upper surface of the printed circuit board 1100 and a lower end exposed to the lower surface of the printed circuit board 1100 through the hole 1110. 1100) is installed.
- the metal plate 1200 together with the printed circuit board 1100 constitutes an integrated protection circuit module (PCM).
- PCM integrated protection circuit module
- the unit cell 1300 is disposed below the printed circuit board 1100 and has a welding portion 1310 welded to at least a portion of the metal plate 1200 exposed through the hole 1110.
- the cell assembly according to the present invention strengthens the fixing force between the protection circuit module (PCM) and the cell, prevents the occurrence of assembly tolerance due to the bending process of the conventional cell assembly, and does not require a separate insulating tape. Therefore, it is possible to reduce costs and secure a smaller pack overall size that meets customer needs.
- PCM protection circuit module
- the anode of the unit cell 1300 is located at the welded part 1310 . That is, the welding portion 1310 is a portion where the anode of the cell 1300 and the metal plate 1200 are welded.
- the metal plate 1200 directly contacts the inside of the hole 1110 of the printed circuit board 1100 .
- “direct contact” means that no other member is included between the metal plate 1200 and the inside of the hole 1110 .
- the upper end 1210 of the metal plate 1200 may be separated from the upper edge of the printed circuit board 1100 by a predetermined distance. Since the metal plate 1200 does not perform a bending process of a conventional cylindrical cell assembly, it may be positioned away from the edge of the printed circuit board 1100 . On the other hand, referring to FIG. 6, since the conventional cylindrical assembly undergoes a bending process, the metal plate 20 is formed to surround the edge of the printed circuit board 30.
- the metal plate 1200 has a welding surface welded to the printed circuit board 1100 .
- the welding surface may be a surface directly contacting the inside of the hole 1110 .
- the unit cell according to the present invention may be a cylindrical unit cell.
- Components of the cylindrical unit cell are various known materials and are not particularly limited.
- the cell assembly includes a cell cover (not shown) surrounding the exterior of the cell; and a cap cover 1400 assembled with the cell cover while covering an upper portion of the substrate.
- a foam tape 1500 attached to the top of the cap cover 1500 may be included.
- the foam tape 1500 implements the degree of freedom of the overall length through compression and serves to protect the cell assembly from external impact.
- support member 1200 metal plate
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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)
Abstract
Description
Claims (18)
- 제1 측면프레임과 하부프레임으로 구성되어 하부프레임 상측에 수용공간을 형성하는 케이스;상기 수용공간에 수용되는 배터리 셀;제2 측면프레임과 상부프레임으로 구성되어 상기 제2 측면프레임이 상기 제1 측면프레임과 결합되고, 상기 케이스 상에 설치되어 상기 상부프레임의 하부와 상기 배터리 셀 상부 사이에 설치공간을 형성하는 커버; 및상기 설치공간에 배치되며, 상기 상부프레임과 상하방향으로 이격되어 형성되는 소자부재;를 포함하는 셀 조립체.
- 청구항 1에 있어서,상기 소자부재는 상기 상부프레임보다 상기 배터리 셀에 근접하게 배치되어, 상기 상부프레임과 상기 소자부재에 구비되는 소자 사이에 소정의 이격거리를 형성하는 셀 조립체.
- 청구항 2에 있어서,상기 소자부재는,상기 배터리 셀 상에 설치되는 보드; 및충격을 흡수할 수 있는 공간이 형성되도록, 상기 상부프레임과 상하방향으로 이격되어 상기 보드 상에 설치되는 소자;를 포함하는 셀 조립체.
- 청구항 2에 있어서,상기 상부프레임과 상기 소자 사이에 형성되는 소정의 이격거리는, 0.3mm 이상 내지 0.7mm 이하인 셀 조립체.
- 청구항 3에 있어서,상기 소자보다 상하방향 길이가 길게 형성되고, 상기 보드와 상기 상부프레임 사이에 설치되는 지지부재를 더 포함하는 셀 조립체.
- 청구항 5에 있어서,상기 지지부재는 상기 커버와 일체형으로 형성되는 것을 특징으로 하는 셀 조립체.
- 청구항 5에 있어서,상기 지지부재는 상기 커버와 일체형으로 형성되되, 상기 제2 측면프레임의 내주부로부터 연장형성되는 격자구조를 포함할 수 있으며,이때 상기 지지부재의 상하방향 길이는 상기 소자의 상하방향 길이와 상기 보드의 두께를 합한 것보다 크며,상기 보드의 측부와 제2 측면프레임 사이의 공간에 설치되는 것;을 특징으로 하는 셀 조립체.
- 청구항 5에 있어서,상기 지지부재는, 충격을 흡수할 수 있도록 적어도 일부가 상하방향으로 신장수축 가능한 셀 조립체.
- 청구항 5에 있어서,상기 지지부재는, 상기 소자부재에서 상기 커버로 열이 전달되는 경로를 형성하는 셀 조립체.
- 청구항 3 내지 청구항 7 중 어느 한 항에 있어서,상기 보드는 인쇄회로기판을 포함하고,상기 인쇄회로기판은 중앙에 홀을 구비하며,상단이 상기 인쇄회로 기판의 상면에 걸리고, 하단이 상기 홀을 통해 상기 인쇄회로기판의 하면으로 노출되게 상기 인쇄회로기판에 설치된 메탈 플레이트; 및인쇄회로기판의 하부에 위치하고, 상기 홀을 통해 노출된 메탈 플레이트의 적어도 일부 영역과 용접되는 용접부를 갖는 단위 셀을 포함하는 셀 조립체.
- 중앙에 홀이 마련된 인쇄회로기판; 및상단이 상기 인쇄회로기판의 상면에 걸리고, 하단이 상기 홀을 통해 상기 인쇄회로기판의 하면으로 노출되게 상기 인쇄회로기판에 설치된 메탈 플레이트; 및상기 인쇄회로기판의 하부에 위치하고, 상기 홀을 통해 노출된 메탈 플레이트의 적어도 일부 영역과 용접되는 용접부를 갖는 단위 셀을 포함하는, 셀 조립체.
- 제 11 항에 있어서, 상기 단위 셀은 용접부에 양극이 위치하는, 셀 조립체.
- 제 12 항에 있어서, 상기 메탈 플레이트는 상기 인쇄회로기판의 홀의 내측과 직접 접촉되는, 셀 조립체.
- 제 11 항에 있어서, 상기 메탈 플레이트의 상단은 상기 인쇄회로기판의 상면 가장 자리와 소정 거리 떨어진, 셀 조립체.
- 제 11항에 있어서, 상기 메탈 플레이트는 상기 인쇄회로기판과 용접된 용접면을 갖는, 셀 조립체.
- 제 11 항에 있어서, 상기 단위 셀은 원통형 단위 셀인, 셀 조립체.
- 제 11 항에 있어서, 상기 셀의 외관을 둘러싸는 셀 커버; 및상기 기판 상부를 덮으면서 상기 셀 커버와 조립되는 캡 커버를 포함하는, 셀 조립체.
- 제 17 항에 있어서, 상기 기판 커버의 상부에 접착되는 폼 테이프를 포함하는, 셀 조립체.
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Publication number | Priority date | Publication date | Assignee | Title |
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JP2002298809A (ja) * | 2001-03-29 | 2002-10-11 | Sanyo Electric Co Ltd | パック電池 |
KR20070067778A (ko) * | 2005-12-23 | 2007-06-29 | 삼성에스디아이 주식회사 | 리튬 이차전지와 그 제조방법 |
KR20090078181A (ko) * | 2008-01-14 | 2009-07-17 | 삼성에스디아이 주식회사 | 배터리 팩 |
KR20110005580A (ko) * | 2009-07-10 | 2011-01-18 | 삼성에스디아이 주식회사 | 이차 전지 |
KR20120089412A (ko) * | 2010-11-16 | 2012-08-10 | 삼성에스디아이 주식회사 | 배터리 팩 |
KR101650030B1 (ko) | 2013-09-30 | 2016-08-22 | 주식회사 엘지화학 | 보호회로 모듈을 포함하는 이차전지 팩 |
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JP2002298809A (ja) * | 2001-03-29 | 2002-10-11 | Sanyo Electric Co Ltd | パック電池 |
KR20070067778A (ko) * | 2005-12-23 | 2007-06-29 | 삼성에스디아이 주식회사 | 리튬 이차전지와 그 제조방법 |
KR20090078181A (ko) * | 2008-01-14 | 2009-07-17 | 삼성에스디아이 주식회사 | 배터리 팩 |
KR20110005580A (ko) * | 2009-07-10 | 2011-01-18 | 삼성에스디아이 주식회사 | 이차 전지 |
KR20120089412A (ko) * | 2010-11-16 | 2012-08-10 | 삼성에스디아이 주식회사 | 배터리 팩 |
KR101650030B1 (ko) | 2013-09-30 | 2016-08-22 | 주식회사 엘지화학 | 보호회로 모듈을 포함하는 이차전지 팩 |
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