WO2021187777A1 - 배터리 스웰링 검사 장치 - Google Patents
배터리 스웰링 검사 장치 Download PDFInfo
- Publication number
- WO2021187777A1 WO2021187777A1 PCT/KR2021/002633 KR2021002633W WO2021187777A1 WO 2021187777 A1 WO2021187777 A1 WO 2021187777A1 KR 2021002633 W KR2021002633 W KR 2021002633W WO 2021187777 A1 WO2021187777 A1 WO 2021187777A1
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- WO
- WIPO (PCT)
- Prior art keywords
- battery
- pressure
- swelling
- pressing member
- swelling test
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- H01M10/4285—Testing apparatus
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/30—Measuring arrangements characterised by the use of mechanical techniques for measuring the deformation in a solid, e.g. mechanical strain gauge
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- 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
- H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present invention relates to a battery swelling test apparatus, and more particularly, to a battery swelling test apparatus capable of inspecting the swelling of a battery cell.
- gas may be generated inside the battery during charging and discharging or at a high temperature, and swelling may occur. Since there is a risk of fire or explosion due to swelling of the battery, it is important to accurately examine the swelling behavior of the battery.
- Patent Document 1 an apparatus for inspecting swelling of a battery using a plurality of load cells has been disclosed (Patent Document 1).
- a first plate, a plurality of load cells, a second plate, an object to be measured (battery cell), and a third plate are stacked, and the first plate, the second plate, and the third plate are fastened to a plurality of plates. fixed through the member.
- the second plate provided between the battery cell and the plurality of load cells is fixed by the fastening member, the swelling pressure of each part of the battery cell is transmitted to the plurality of load cells, but a lot of loss is inevitable.
- Patent Document 1 since the movement of the second plate according to the swelling pressure is restricted by the fastening member, there is a limitation in that the swelling of the battery cell cannot be accurately inspected.
- FIG. 9 of Patent Document 1 a structure is disclosed in which the second plate is composed of a plurality of partial flat plates, and each partial flat plate is interconnected by a connecting portion. Since the partial plates are connected to each other, there is a problem that the swelling pressure applied to one partial plate may affect the other partial plates.
- the plurality of partial flat plates of Patent Document 1 are constrained to each other by a connecting portion formed of a material having elasticity or ductility. That is, when a swelling pressure is applied to any one of the partial flat plates, the swelling pressure is not transmitted only toward the load cell located in the lower direction, but is distributed through the connection part.
- Patent Document 1 KR 10-2017-0042082 A
- the present invention has been devised to solve the above problems, and an object of the present invention is to provide a battery swelling test apparatus capable of independently measuring the pressure of each part of a battery cell corresponding to each of a plurality of pressure measuring elements. .
- a battery swelling test apparatus includes a lower plate configured in a plate shape; an upper plate configured in a plate shape and positioned to face the lower plate; a fixed frame configured to be fixedly coupled to a portion of the lower plate and a portion of the upper plate; a plurality of pressure measuring elements fixedly coupled to the lower plate, positioned so that the head faces the upper plate, and configured to respectively measure the pressure applied to the head; and a plurality of pressing members having an upper surface configured in a flat shape, the upper surface facing the upper plate, and at least a portion of the lower surface being attached to the head of each of the plurality of pressure measuring elements.
- the pressure measuring element may be configured in a form in which at least a portion of the head is inclined.
- the pressure measuring element at least a portion of the head may be configured in the form of a curved surface.
- the pressing member may be configured such that a central portion of the lower surface is attached to the head.
- the pressing member may be configured such that the upper surface faces the upper plate with a predetermined interval therebetween.
- the fixing frame may be configured to adjust the distance between the upper surface and the upper plate.
- the pressing member may include: a body part having a plate shape having the upper surface and the lower surface; and a leg portion configured to protrude downward from at least a portion of the body portion.
- the pressing member may be configured such that an angle between the body part and the leg part is changeable.
- the leg portion may be coupled to at least a portion of the body portion to enable hinge rotation.
- the battery swelling test apparatus may further include an elastic member configured such that one end is attached to the lower plate and the other end is attached to the leg portion.
- the body portion may be configured to be inclined around the head to correspond to a position where pressure is applied.
- the leg part may be configured to be movable in the lower direction by the elastic member that contracts or expands according to the degree of inclination of the body part.
- the battery swelling test apparatus may further include a support member having one end attached to the lower plate and a hollow or groove formed therein so that the leg portion is inserted.
- the elastic member may be configured to be located inside the hollow or the groove.
- the battery swelling test apparatus may further include a guide member configured to protrude upward from the upper surface of the lower plate to partition the upper surface of the lower plate into a plurality of sections.
- a battery swelling test apparatus is connected to the plurality of pressure measurement elements, receives a pressure value measured from each of the plurality of pressure measurement elements, and a battery cell between the upper plate and the pressing member
- the controller may further include a controller configured to determine at least one of a swelling distribution of the battery cell and a swelling degree for each part of the battery cell based on a plurality of received pressure values.
- the swelling distribution of the battery cell and/or the swelling degree of each part of the battery cell can be measured more accurately.
- 1 is a block diagram schematically illustrating a battery swelling test apparatus according to an embodiment of the present invention.
- 2 is a diagram schematically illustrating a battery swelling test apparatus according to an embodiment of the present invention.
- FIG. 3 is a diagram illustrating a pressure measuring element of a battery swelling test apparatus according to an embodiment of the present invention.
- FIG. 4 is an exploded perspective view of a pressure measuring element and a pressing member in the battery swelling test apparatus according to an embodiment of the present invention.
- FIG. 5 is a combined perspective view of a pressure measuring element and a pressing member in the battery swelling test apparatus according to an embodiment of the present invention.
- FIG. 6 is a view showing another embodiment of the pressing member in the battery swelling test apparatus according to an embodiment of the present invention.
- FIG. 7 is a diagram schematically illustrating a battery swelling test apparatus according to an embodiment of the present invention.
- FIG. 8 is a view showing an embodiment of a pressing member in the battery swelling test apparatus according to an embodiment of the present invention.
- FIG. 9 is a diagram illustrating a pressing member in more detail in the battery swelling test apparatus according to an embodiment of the present invention.
- FIG. 10 is a view showing an embodiment in which the pressing member is inclined in the battery swelling test apparatus according to an embodiment of the present invention.
- FIG. 11 is a diagram schematically illustrating an embodiment in which an elastic member is further included in the battery swelling test apparatus according to an embodiment of the present invention.
- FIGS 12 to 14 are diagrams schematically illustrating an embodiment in which a support member is further included in the battery swelling device according to an embodiment of the present invention.
- 15 and 16 are diagrams schematically illustrating an embodiment in which a guide member is further included in the battery swelling test apparatus according to an embodiment of the present invention.
- FIG. 17 is a diagram schematically illustrating a swelling test result of a battery cell using the battery swelling test apparatus according to an embodiment of the present invention.
- a term such as a control unit described in the specification means a unit for processing at least one function or operation, which may be implemented as hardware or software, or a combination of hardware and software.
- FIG. 1 is a block diagram schematically illustrating a battery swelling test apparatus 100 according to an embodiment of the present invention.
- 2 is a diagram schematically illustrating a battery swelling test apparatus 100 according to an embodiment of the present invention.
- the battery swelling testing apparatus 100 is an apparatus for testing the swelling of the battery cell 10 , and may check a swelling distribution and/or a swelling degree.
- the battery cell 10 is provided with a negative terminal and a positive terminal, and means one physically separable independent cell.
- one pouch-type lithium polymer cell may be regarded as a battery cell.
- battery swelling in which the volume of the battery cell 10 swells may occur not only in the central portion of the battery cell 10 but also in the peripheral portion of the battery cell 10 .
- the peripheral portion refers to a region excluding the central portion. Accordingly, the battery swelling test apparatus 100 determines the pressure distribution (swelling distribution) of the battery cell 10 due to swelling and/or the pressure level (swelling degree) of each part of the battery cell 10 due to the swelling. can be inspected.
- the battery swelling test apparatus 100 includes a lower plate 110 , an upper plate 120 , a fixed frame 130 , a pressure measuring element 140 , and A pressing member 150 may be included.
- the lower plate 110 may be configured in a plate shape.
- the lower plate 110 may be configured in a plate shape so that a plurality of pressure measuring elements 140 can be attached thereto.
- the lower plate 110 may be configured in the form of a flat plate.
- the upper plate 120 is configured in a plate shape, and may be configured to face the lower plate 110 .
- the upper plate 120 is configured in a flat plate shape, so that the lower surface of the upper plate 120 may be in contact with the upper surface of the battery cell 10 .
- the upper plate 120 and the battery cell 10 are detachable.
- the upper surface of the battery cell 10 may be attached to the lower surface of the upper plate 120 .
- the swelling test of the battery cell 10 is finished, the battery cell 10 may be detached from the upper plate 120 .
- the upper plate 120 and the lower plate 110 may be positioned to face each other.
- the upper plate 120 and the lower plate 110 are positioned to face each other, and the battery cell 10 may be provided between the upper plate 120 and the lower plate 110 .
- the fixed frame 130 may be configured such that a portion of the lower plate 110 and a portion of the upper plate 120 are fixedly coupled.
- the fixing frame 130 may fix the upper plate 120 and the lower plate 110 so that the upper plate 120 and the lower plate 110 are not shaken or rotated.
- a plurality of pressure measuring elements 140 may be provided.
- the plurality of pressure measuring elements 140 may be fixedly coupled to the lower plate 110 .
- the number of the pressure measuring elements 140 provided in the battery swelling test apparatus 100 is not limited, but if a larger number of the pressure measuring elements 140 are provided, the accuracy of the swelling test may be improved.
- nine pressure measuring elements 140 are provided.
- the plurality of pressure measuring elements 140 may be fixedly coupled to the lower plate 110 by being spaced apart from each other at regular intervals.
- the plurality of pressure measuring elements 140 when the plurality of pressure measuring elements 140 are fixedly coupled to a portion of the lower plate 110 , the swelling distribution of the battery cell 10 may not be accurately measured. Accordingly, the plurality of pressure measuring elements 140 may be disposed on the lower plate 110 at predetermined intervals.
- the pressure measuring element 140 may be positioned such that the head 141 faces the upper plate 120 , and may be configured to measure the pressure applied to the head 141 , respectively.
- FIG 3 is a diagram illustrating a pressure measuring element 140 of the battery swelling test apparatus 100 according to an embodiment of the present invention.
- the pressure measuring device 140 may include a head 141 and a body 142 . And, the pressure measuring element 140 may be configured to measure the pressure applied to the head (141). For example, a load cell may be applied as the pressure measuring element 140 .
- a swelling pressure may be applied to the heads 141 of each of the plurality of pressure measuring elements 140 .
- Each of the plurality of pressure measuring elements 140 may measure the swelling pressure applied to the head 141 .
- the plurality of pressure measuring elements 140 do not affect each other in the process of measuring the pressure, depending on the location where the swelling occurs in the battery cell 10, the The measured swelling pressures may be different from each other.
- a plurality of pressing members 150 may be provided.
- the number of pressing members 150 may correspond to the number of the plurality of pressure measuring elements 140 .
- the pressing member 150 may have a flat upper surface, and the upper surface may be configured to face the upper plate 120 .
- the battery cell 10 may be interposed between the pressing member 150 and the upper plate 120 .
- the upper surface of the pressing member 150 When the upper surface of the pressing member 150 is in contact with the battery cell 10 , the upper surface of the pressing member 150 has a flat shape so that the swelling pressure of the battery cell 10 can be applied to the pressing member 150 . can be configured.
- the battery cell 10 may be interposed and fixed between the upper surface-facing upper plate 120 of the pressing member 150 .
- the pressing member 150 may be configured such that at least a portion of a lower surface thereof is attached to the head 141 of each of the plurality of pressure measuring elements 140 .
- the head 141 and the pressing member 150 of the pressure measuring element 140 may be formed of a magnetic material attachable to each other. More preferably, the upper end of the head 141 of the pressure measuring element 140 and the central portion of the lower surface of the pressing member 150 may be formed of a magnetic material. Accordingly, the central portion of the lower surface of the pressing member 150 may be attached to the upper end of the head 141 of the pressure measuring element 140 by magnetism. Also, the pressing member 150 may be detachably attached to the head 141 of the pressure measuring element 140 .
- FIG. 4 is an exploded perspective view of the pressure measuring element 140 and the pressing member 150 in the battery swelling test apparatus 100 according to an embodiment of the present invention.
- 5 is a combined perspective view of the pressure measuring element 140 and the pressing member 150 in the battery swelling test apparatus 100 according to an embodiment of the present invention.
- the plurality of pressing members 150 may be attached to corresponding pressure measuring elements 140 . That is, the plurality of pressing members 150 and the plurality of pressure measuring elements 140 may correspond to each other on a one-to-one basis.
- the central portion of the lower surface (-z-direction surface) of the pressing member 150 may be attached to the upper end (+z-direction upper end) of the head 141 .
- the pressing member 150 may be attached to the head 141 of the pressure measuring element 140 such that the upper surface (+z-direction surface) is parallel to the lower plate 110 .
- the plurality of pressing members 150 may be positioned to be spaced apart from each other by a predetermined distance.
- the first pressing member 150 corresponds to the first pressure measuring element 140a and the second pressing member 150 corresponds to the second pressure measuring element 140b.
- the first pressing member 150 may transmit the swelling pressure to the head 141 of the first pressure measuring element 140a. That is, the pressure in the downward direction (-z direction) is applied to the first pressing member 150 by the swelling pressure, and this swelling pressure is applied to the first pressure measuring element 140a through the first pressing member 150 . may be transferred to the head 141 of Since the first pressing member 150 and the second pressing member 150 are spaced apart from each other by a predetermined distance and do not contact each other, the swelling pressure applied to the first pressing member 150 is applied to the second pressing member 150 . It may not have a direct impact.
- the pressure measuring element 140 at least a portion of the head 141 may be configured in an inclined shape.
- the pressing member 150 when a swelling pressure is applied to the pressing member 150 , the pressing member 150 may be pressed by the applied swelling pressure. Also, the pressing member 150 may be inclined to correspond to a position to which the swelling pressure is applied.
- the pressing member 150 when the swelling pressure is applied at a position outside the center of the pressing member 150 , the pressing member 150 may be inclined around the top of the head 141 . That is, the central portion of the lower surface of the pressing member 150 (the portion attached to the upper end of the head 141) may act as a supporting point.
- the body 142 of the pressure measuring element 140 is fixedly coupled to the lower plate 110 , and the head 141 of the pressure measuring element 140 may move in an up-down direction.
- the head 141 may move in an upper direction (+z direction) and a lower direction ( ⁇ z direction). Therefore, as in the previous example, in the process of inclining the pressing member 150 , the pressing member 150 may be more easily transmitted to the head 141 of the pressure measuring element 140 by the force applied to the pressing member 150 .
- a portion of the upper end (+z-direction upper end) of the head 141 may be configured in an inclined shape.
- At least a portion of the head 141 of the pressure measuring element 140 may be formed in an angular shape or a curved shape.
- at least a portion of the head 141 may be configured in a curved shape.
- the movement of the pressure member 150 is restricted by the shape of the head 141 of the pressure measuring element 140 . can be minimized. That is, since the head 141 of the pressure measuring element 140 has a shape in which the pressing member 150 can be easily inclined, the pressing member 150 can be easily inclined in response to the applied pressure.
- the upper end of the body 151 of the pressing member 150 and the head 141 of the pressure measuring element 140 are formed of a magnetic material, so that the pressing member 150 is easily returned to its original shape after being tilted. can be
- FIG. 6 is a view showing another embodiment of the pressing member 150 in the battery swelling test apparatus 100 according to an embodiment of the present invention.
- a groove corresponding to the head 141 of the pressure measuring element 140 may be provided in the central portion of the lower surface of the pressing member 150 .
- the curvature of the groove of the lower surface of the pressing member 150 may be less than or equal to the curvature of the upper end of the head 141 of the pressure measuring element 140 .
- the groove of the lower surface of the pressing member 150 and the upper end of the head 141 of the pressure measuring element 140 may be magnetically attached to each other. And, when the swelling pressure is applied to the pressing member 150 , the pressing member 150 may be easily inclined along the head 141 of the pressure measuring element 140 .
- FIG. 7 is a diagram schematically illustrating a battery swelling test apparatus 100 according to an embodiment of the present invention.
- the pressing member 150 may be configured such that the upper surface faces the upper plate 120 with a predetermined interval therebetween.
- the fixing frame 130 may be configured to adjust the distance between the upper surface and the upper plate 120 .
- the fixed frame 130 may be configured to adjust the position where the lower plate 110 and the upper plate 120 are coupled.
- the position at which the lower plate 110 and the upper plate 120 are fixedly coupled in the fixing frame 130 can be adjusted so that the battery cell 10 can be fixed between the pressing member 150 and the upper plate 120 . have. Accordingly, the distance between the upper surface of the pressing member 150 and the lower surface of the upper plate 120 may be adjusted.
- the fixing frame 130 may be configured such that a position at which the lower plate 110 and the upper plate 120 are fixed can be adjusted in the vertical direction (z direction).
- the battery swelling test apparatus 100 is provided with a fixed frame 130 configured to adjust the distance between the lower plate 110 and the upper plate 120, and various thicknesses (eg, There is an advantage in that the swelling of the battery cell 10 having the z-direction length of the battery cell 10 in FIG. 7 can be checked.
- FIG. 8 is a diagram illustrating an embodiment of the pressing member 150 in the battery swelling test apparatus 100 according to an embodiment of the present invention.
- the pressing member 150 may include a body part 151 and a leg part 152 .
- the body part 151 may be configured in a plate shape having the upper surface and the lower surface.
- the leg part 152 may be configured to protrude downward from at least a portion of the body part 151 .
- the body 151 may be configured in a plate shape having an upper surface (a surface in a +z direction) and a lower surface (a surface in a -z direction).
- the leg part 152 may protrude from a part of the body part 151 in the downward direction (-z direction).
- the swelling pressure of the battery cell 10 is accurately applied to the pressure measuring element 140 corresponding to the inclined pressing member 150 . may not be delivered. In this case, the accuracy of the swelling distribution of the battery cells 10 tested by the plurality of pressure measuring elements 140 may be reduced. Therefore, even when one pressing member 150 is rotated, the plurality of pressure measuring elements 140 may be disposed on the lower plate 110 with a predetermined distance therebetween so that they do not come into contact with the adjacent pressing member 150 .
- the pressing member 150 may be configured such that the angle between the body part 151 and the leg part 152 is changeable.
- FIG. 9 is a diagram illustrating the pressing member 150 in more detail in the battery swelling test apparatus 100 according to an embodiment of the present invention.
- 10 is a diagram illustrating an embodiment in which the pressing member 150 is inclined in the battery swelling test apparatus 100 according to an embodiment of the present invention.
- FIG. 9 is an embodiment in which the pressing member 150 is not inclined
- FIG. 10 is an embodiment in which the pressing member 150 is inclined by the swelling pressure F. As shown in FIG. 9
- the angle between the body part 151 and the leg part 152 may be A1° and B1°.
- a swelling pressure F is applied to the pressing member 150 and the pressing member 150 is rotated, the angle between the body part 151 and the leg part 152 is A2° and Can be changed to B2°.
- leg part 152 may be coupled to at least a portion of the body part 151 to enable hinge rotation.
- leg part 152 and the body part 151 may be coupled to each other through the hinge pin 153 .
- the leg part 152 and the body part 151 may be rotatably coupled with the hinge pin 153 as an axis. Accordingly, even if the body portion 151 of the pressing member 150 is inclined, the leg portion 152 may face downward (-z direction).
- leg part 152 and the body part 151 are configured to be hingedly rotatable, even if some of the body parts 151 among the plurality of pressing members 150 are inclined, the plurality of The leg portions 152 of the pressing member 150 may not contact each other. That is, since the leg portion 152 of the pressing member 150 may always face the downward direction (-z), the spacing between the plurality of pressing elements disposed on the lower plate 110 may be set to be narrower.
- the battery swelling test apparatus 100 by arranging a larger number of pressurizing elements on the lower plate 110 , the swelling distribution and/or the swelling degree of the battery cells 10 . can be checked more accurately.
- FIG. 11 is a diagram schematically illustrating an embodiment in which an elastic member 160 is further included in the battery swelling test apparatus 100 according to an embodiment of the present invention. Specifically, FIG. 11 is a diagram schematically illustrating only one pressure measuring element 140 , one pressing member 150 , and an elastic member 160 in the battery swelling test apparatus 100 . However, it should be noted that the structure of FIG. 11 is also applicable to the embodiment of FIG. 7 .
- the battery swelling test apparatus 100 may further include an elastic member 160 .
- the elastic member 160 may be configured such that one end is attached to the lower plate 110 and the other end is attached to the leg unit 152 .
- the body 151 may be configured to be inclined around the head 141 to correspond to a position where pressure is applied. That is, the body 151 may be rotated around the head 141 to correspond to a position where pressure is applied.
- leg part 152 is moved in the upper direction (+z direction) or the lower direction (-z direction) by the elastic member 160 that contracts or expands according to the degree of inclination of the body part 151 .
- the elastic member 160 may be configured to be movable.
- the swelling pressure applied thereafter is applied to the pressure measuring element through the pressing member 150 . (140) may not be accurately conveyed.
- the elastic member 160 when a swelling pressure is applied to the pressing member 150 to incline the body part 151 , the elastic member 160 may contract or expand. And, when the swelling pressure disappears, the pressing member 150 inclined by the elastic force of the elastic member 160 may easily return to its original position.
- the battery swelling test apparatus 100 further includes an elastic member 160 connecting the lower plate 110 and the pressing member 150 , and pressurizes when the swelling pressure applied to the pressing member 150 is extinguished.
- the member 150 can be easily returned to its original state. Through this, in the swelling test process in which the battery cell 10 is charged and discharged a plurality of times, the swelling distribution and/or the swelling degree of the battery cell 10 may be more accurately inspected.
- FIGS 12 to 14 are diagrams schematically illustrating an embodiment in which a support member 170 is further included in the battery swelling apparatus according to an embodiment of the present invention.
- FIGS. 12 and 13 schematically show only one pressure measuring element 140 , one pressing member 150 , an elastic member 160 , and a supporting member 170 in the battery swelling test apparatus 100 . It is the drawing shown.
- FIG. 12 shows an embodiment in which the pressing member 150 is provided with two leg portions 152 and two support members 170 are provided.
- 13 is an embodiment in which the pressing member 150 is provided with four leg parts 152 and four support members 170 are provided.
- FIG. 14 shows the battery swelling test apparatus 100 in which two leg parts 152 are provided in each of the plurality of pressing members 150 , and each leg part 152 is inserted into the support member 170 . It is a drawing showing an embodiment.
- the battery swelling test apparatus 100 may further include a support member 170 .
- the support member 170 may be configured such that one end is attached to the lower plate 110 , and a hollow or groove is formed therein so that the leg part 152 is inserted.
- leg part 152 Since the leg part 152 is inserted into the support member 170 and the leg part 152 can only move inside the support member 170 , even when the body part 151 of the pressing member 150 rotates Contact between the adjacent leg parts 152 may be blocked.
- the battery swelling test apparatus 100 further includes a support member 170 , thereby providing an interval (specifically, a plurality of pressure measuring elements 140 ) disposed on the lower plate 110 . of the pressing member 150) may be set to be narrower. Accordingly, since the number of pressure measuring elements 140 that may be disposed on the lower plate 110 may be increased, the swelling distribution and/or the swelling degree of the battery cell 10 may be more accurately inspected.
- the elastic member 160 may be configured to be located inside the hollow or the groove.
- a hollow may be formed inside the support member 170 .
- the elastic member 160 is provided inside the hollow of the support member 170, one end is attached to the upper surface (+z-direction surface) of the lower plate 110, the other end is inserted into the hollow leg portion 152 ) can be attached to the lower surface (-z direction surface).
- a groove may be formed in the support member 170 .
- the elastic member 160 is seated in the groove of the support member 170 , one end is attached to the upper surface (+z-direction surface) of the groove of the support member 170 , and the other end is inserted into the groove. It may be attached to the lower surface (-z-direction surface) of the part 152 .
- the battery swelling test apparatus 100 further includes a support member 170 for preventing contact between the adjacent pressure members 150 , and includes a plurality of pressure measuring elements 140 . ), it is possible to improve the accuracy of the swelling pressure of the battery cell 10 measured by each.
- the battery swelling test apparatus 100 since the battery swelling test apparatus 100 includes the elastic member 160 inside the support member 170 , it is easier to return to the original position after the body part 151 of the pressing member 150 is rotated. can make it come back.
- 15 and 16 are diagrams schematically illustrating an embodiment in which a guide member 180 is further included in the battery swelling test apparatus 100 according to an embodiment of the present invention.
- the battery swelling test apparatus 100 may further include a guide member 180 .
- the guide member 180 may be configured to protrude from the upper surface of the lower plate 110 in the upper direction (+z direction) to divide the upper surface (+z-direction surface) of the lower plate 110 into a plurality of sections. .
- the guide member 180 may be integrally formed with the lower plate 110 , or may be configured separately from the lower plate 110 and attached to the lower plate 110 .
- the guide member 180 and the lower plate 110 are each configured, and the guide member 180 is attached to the lower plate 110 .
- the upper surface of the lower plate 110 may be divided into a plurality of sections by the guide member 180 .
- the pressure measuring element 140 and the pressing member 150 may be provided in each section.
- at least one of the elastic member 160 and the support member 170 may be further provided in each section.
- the battery swelling test apparatus 100 further includes the guide member 180 , so that contact between the plurality of pressing members 150 can be prevented in advance.
- the deformation force of the elastic member 160 may exceed an elastic limit. That is, when the body portion 151 of the pressing member 150 is rotated excessively, some of the elastic members 160 may expand to exceed the elastic limit. In this case, the elastic member 160 expanded to exceed the elastic limit may be plastically deformed. Accordingly, there is a problem in that it is no longer possible to accurately measure the swelling distribution and/or the swelling degree of the battery cell 10 by using the elastic member 160 .
- the upper surface of the pressing member 150 may protrude from the upper surface of the guide member 180 by a predetermined length L2 . And, when swelling of the battery cell 10 occurs, the volume of the battery cell 10 may increase to press the pressing member 150 .
- the upper plate 120 and the lower plate 110 are fixed so as not to be shaken or rotated by the fixing frame 130 , a swelling pressure can be applied to the pressing member 150 by the increased volume of the battery cell 10 . have.
- the height L2 of the guide member 180 may be determined in consideration of the elastic limit of the elastic member 160 .
- the guide member 180 prevents the volume of the battery cell 10 from increasing above a certain level, so that the pressing member 150 is excessively rotated in one direction so that the elastic member 160 exceeds the elastic limit. expansion can be prevented.
- the height of the guide member 180 may be determined in consideration of the elastic limit of the elastic member 160 and the height (L1+L2) from the upper surface of the lower plate 110 to the upper surface of the pressing member 150 .
- the height of the guide member 180 is the elastic limit of the elastic member 160 , the height (L1+L2) from the upper surface of the lower plate 110 to the upper surface of the pressing member 150 , and the battery cell 10 . ) can be determined by comprehensively considering the maximum degree of expansion.
- the battery swelling test apparatus 100 has an advantage in that it is possible to reduce the maintenance and repair costs of the test apparatus by preventing the elastic member 160 from being damaged.
- the battery swelling test apparatus 100 can dramatically reduce the possibility of damage to the elastic member 160 , it is possible to more accurately inspect the swelling distribution and/or the swelling degree of the battery cell 10 . have.
- the battery swelling test apparatus 100 may further include a controller 190 .
- the controller 190 uses a processor, an application-specific integrated circuit (ASIC), other chipsets, logic circuits, registers, communication modems, data processing devices, etc. known in the art to execute various control logics performed in the present invention. may optionally be included. Also, when the control logic is implemented in software, the controller 190 may be implemented as a set of program modules. In this case, the program module may be stored in the memory and executed by the controller 190 . The memory may be inside or outside the control unit 190 , and may be connected to the control unit 190 by various well-known means.
- ASIC application-specific integrated circuit
- the controller 190 may be connected to the plurality of pressure measuring elements 140 and configured to receive pressure values measured from each of the plurality of pressure measuring elements 140 .
- control unit 190 may be communicatively connected to the plurality of pressure measuring elements 140 by wire.
- controller 190 may receive the pressure values measured from the plurality of pressure measuring elements 140 . That is, the controller 190 may receive the swelling pressure value of the battery cell 10 measured by each of the plurality of pressure measuring elements 140 .
- the controller 190 controls a swelling distribution of the battery cell 10 based on a plurality of received pressure values.
- the battery cell 10 may be configured to determine at least one of swelling levels for each region.
- the first pressure measuring element 140a may measure the pressure value of the first portion of the battery cell 10 .
- the second pressure measuring element 140b measures the pressure value of the second portion of the battery cell 10
- the third pressure measuring element 140c measures the pressure value of the third portion of the battery cell 10 .
- the controller 190 may receive a first pressure value from the first pressure measuring element 140a. In addition, the controller 190 may receive a second pressure value from the second pressure measuring element 140b and may receive a third pressure value from the third pressure measuring element 140c.
- the controller 190 determines the swelling distribution for the first, second, and third parts of the battery cell 10 based on each of the first pressure value, the second pressure value, and the third pressure value.
- control unit 190 calculates a first pressure difference value between the first pressure value and the reference pressure value, calculates a second pressure difference value between the second pressure value and the reference pressure value, and calculates the third pressure value and the reference pressure value.
- a third pressure difference value between the values may be calculated.
- the control unit 190 corresponds to the first pressure difference value, the second pressure difference value, and the third pressure difference value to a plurality of preset pressure sections, and the first part, the second part, and the second part of the battery cell 10 . It is possible to determine the degree of swelling for each of the three regions.
- the plurality of pressure sections may be preset as a normal section, a warning section, and a danger section.
- the plurality of pressure sections may be stored in an internal memory or an external memory of the controller 190 .
- the controller 190 may determine that the degree of swelling of the first portion of the battery cell 10 is at the dangerous level, the degree of swelling of the second portion is at the warning level, and the degree of swelling of the third portion is at the normal level. .
- control unit 190 may be configured to first determine the swelling distribution for each region of the battery cell 10 and then determine the degree of swelling only at the portion of the battery cell 10 where it is determined that the swelling has occurred. have.
- the controller 190 determines that swelling has occurred in the first portion and the second portion of the battery cell 10 .
- the controller 190 may determine the degree of swelling in the first portion by matching the first pressure difference value with respect to the first portion of the battery cell 10 to a plurality of preset pressure sections.
- the controller 190 determines the degree of swelling in the second portion of the battery cell 10 by matching the second pressure difference value with respect to the second portion of the battery cell 10 to a plurality of preset pressure sections. can do.
- the controller 190 may compare the plurality of received pressure values with the sizes of the reference pressure values, and if the received pressure value is equal to or greater than the reference pressure value, it may be determined that swelling has occurred.
- the battery swelling test apparatus 100 may determine the swelling distribution of the battery cell 10 and/or the swelling degree of each part of the battery cell 10 . Accordingly, a region where swelling has occurred in the battery cell 10 may be specifically specified.
- the battery swelling test apparatus 100 can specifically determine the swelling degree for each part of the battery cell 10 , information for analyzing the cause of the swelling of the battery cell 10 is provided. There are advantages to doing.
- 17 is a diagram schematically illustrating a swelling test result of the battery cell 10 using the battery swelling test apparatus 100 according to an embodiment of the present invention.
- the degree of swelling is the most severe in the -y-direction region among the regions A to I of the battery cell 10 divided into nine parts. can be That is, in the embodiment of FIG. 7 , the swelling is most severe in the region H of the battery cell 10 corresponding to the second pressure measuring element 140b among the three pressure measuring elements 140 located in the -y direction. can be seen to have occurred.
- the battery swelling test apparatus 100 determines which part of the battery cell 10 has the most swelling by using the swelling distribution for each part of the battery cell 10 . can be inspected.
- the embodiment of the present invention described above is not implemented only through the apparatus and method, and may be implemented through a program for realizing a function corresponding to the configuration of the embodiment of the present invention or a recording medium in which the program is recorded.
- the implementation can be easily implemented by those skilled in the art to which the present invention pertains from the description of the above-described embodiments.
- control unit 190 control unit
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Abstract
Description
Claims (15)
- 판상으로 구성된 하판;판상으로 구성되고, 상기 하판과 대면되게 위치하도록 구성된 상판;상기 하판의 일부분 및 상기 상판의 일부분이 고정 결합되도록 구성된 고정 프레임;상기 하판에 고정 결합되고, 헤드가 상기 상판을 향하도록 위치하며, 상기 헤드에 가해지는 압력을 각각 측정하도록 구성된 복수의 압력 측정 소자; 및상부면이 평평한 형태로 구성되고, 상기 상부면이 상기 상판에 대면되며, 하부면 중 적어도 일부분이 상기 복수의 압력 측정 소자 각각의 헤드에 부착되도록 구성된 복수의 가압 부재를 포함하는 것을 특징으로 하는 배터리 스웰링 검사 장치.
- 제1항에 있어서,상기 압력 측정 소자는,상기 헤드의 적어도 일부분이 경사진 형태로 구성된 것을 특징으로 하는 배터리 스웰링 검사 장치.
- 제2항에 있어서,상기 압력 측정 소자는,상기 헤드의 적어도 일부분이 곡면의 형태로 구성된 것을 특징으로 하는 배터리 스웰링 검사 장치.
- 제2항에 있어서,상기 가압 부재는,상기 하부면의 중앙부가 상기 헤드와 부착되도록 구성된 것을 특징으로 하는 배터리 스웰링 검사 장치.
- 제1항에 있어서,상기 가압 부재는,상기 상부면이 상기 상판과 소정의 간격을 두고 대면되도록 구성된 것을 특징으로 하는 배터리 스웰링 검사 장치.
- 제5항에 있어서,상기 고정 프레임은,상기 상부면과 상기 상판 사이의 간격을 조절 가능하도록 구성된 것을 특징으로 하는 배터리 스웰링 검사 장치.
- 제1항에 있어서,상기 가압 부재는,상기 상부면 및 상기 하부면을 구비하는 판상으로 구성된 몸통부; 및상기 몸통부의 적어도 일부분에서 하부 방향으로 돌출된 형태로 구성된 다리부를 포함하는 것을 특징으로 하는 배터리 스웰링 검사 장치.
- 제7항에 있어서,상기 가압 부재는,상기 몸통부와 상기 다리부 사이의 각도가 변경 가능하도록 구성된 것을 특징으로 하는 배터리 스웰링 검사 장치.
- 제7항에 있어서,상기 다리부는,상기 몸통부의 적어도 일 부분과 결합되어, 힌지 회동이 가능하도록 구성된 것을 특징으로 하는 배터리 스웰링 검사 장치.
- 제7항에 있어서,일단이 상기 하판에 부착되며, 타단이 상기 다리부에 부착되도록 구성된 탄성 부재를 더 포함하는 것을 특징으로 하는 배터리 스웰링 검사 장치.
- 제10항에 있어서,상기 몸통부는,압력이 가해지는 위치에 대응되도록 상기 헤드를 중심으로 기울어질 수 있도록 구성되고,상기 다리부는,상기 몸통부가 기울어진 정도에 따라 수축 또는 팽창하는 상기 탄성 부재에 의해 상부 방향 또는 상기 하부 방향으로 이동 가능하도록 구성된 것을 특징으로 하는 배터리 스웰링 검사 장치.
- 제10항에 있어서,일단이 상기 하판에 부착되고, 상기 다리부가 삽입되도록 내부에 중공 또는 홈이 형성되도록 구성된 지지 부재를 더 포함하는 것을 특징으로 하는 배터리 스웰링 검사 장치.
- 제12항에 있어서,상기 탄성 부재는,상기 중공 또는 상기 홈의 내부에 위치하도록 구성된 것을 특징으로 하는 배터리 스웰링 검사 장치.
- 제1항에 있어서,상기 하판의 상면을 복수의 구간으로 구획하도록 상기 하판의 상면에서 상부 방향으로 돌출된 형태로 구성된 가이드 부재를 더 포함하는 것을 특징으로 하는 배터리 스웰링 검사 장치.
- 제1항에 있어서,상기 복수의 압력 측정 소자와 연결되고, 상기 복수의 압력 측정 소자 각각으로부터 측정된 압력값을 수신하고, 상기 상판과 상기 가압 부재 사이에 배터리 셀이 개재된 경우, 수신한 복수의 압력값에 기반하여 상기 배터리 셀의 스웰링 분포 및 상기 배터리 셀의 부위별 스웰링 정도 중 적어도 하나를 판단하도록 구성된 제어부를 더 포함하는 것을 특징으로 하는 배터리 스웰링 검사 장치.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP21771862.6A EP4053963B1 (en) | 2020-03-20 | 2021-03-03 | Battery swelling inspection apparatus |
| US17/789,108 US12158336B2 (en) | 2020-03-20 | 2021-03-03 | Battery swelling inspection apparatus |
| JP2022520755A JP7322291B2 (ja) | 2020-03-20 | 2021-03-03 | バッテリースウェリング検査装置 |
| CN202180005986.XA CN114556667B (zh) | 2020-03-20 | 2021-03-03 | 电池膨胀检查设备 |
| ES21771862T ES3058064T3 (en) | 2020-03-20 | 2021-03-03 | Battery swelling inspection apparatus |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020200034628A KR102782961B1 (ko) | 2020-03-20 | 2020-03-20 | 배터리 스웰링 검사 장치 |
| KR10-2020-0034628 | 2020-03-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2021187777A1 true WO2021187777A1 (ko) | 2021-09-23 |
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| PCT/KR2021/002633 Ceased WO2021187777A1 (ko) | 2020-03-20 | 2021-03-03 | 배터리 스웰링 검사 장치 |
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| US (1) | US12158336B2 (ko) |
| EP (1) | EP4053963B1 (ko) |
| JP (1) | JP7322291B2 (ko) |
| KR (1) | KR102782961B1 (ko) |
| CN (1) | CN114556667B (ko) |
| ES (1) | ES3058064T3 (ko) |
| WO (1) | WO2021187777A1 (ko) |
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| DE102022128689A1 (de) * | 2022-10-28 | 2024-05-08 | Bayerische Motoren Werke Aktiengesellschaft | Batteriezellenanordnung, Batterie und Fortbewegungsmittel |
| US20250183387A1 (en) | 2023-12-04 | 2025-06-05 | National Chung Shan Institute Of Science And Technology | Automatic pressure adjustment device for measuring pressurization demand of battery cells |
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|---|---|---|---|---|
| JP2024513152A (ja) * | 2021-12-06 | 2024-03-22 | エルジー エナジー ソリューション リミテッド | バッテリー圧力測定センサー及びこれを含むバッテリー圧力測定装置 |
| JP7635947B2 (ja) | 2021-12-06 | 2025-02-26 | エルジー エナジー ソリューション リミテッド | バッテリー圧力測定センサー及びこれを含むバッテリー圧力測定装置 |
| CN114734874A (zh) * | 2022-05-05 | 2022-07-12 | 钛深科技(深圳)有限公司 | 一种获取电芯重点检测区域的方法、电池智能安全检测方法、装置、系统及车辆 |
| CN114734874B (zh) * | 2022-05-05 | 2025-11-28 | 钛深科技(深圳)有限公司 | 一种获取电芯重点检测区域的方法、电池智能安全检测方法、装置、系统及车辆 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4053963A4 (en) | 2024-10-30 |
| CN114556667B (zh) | 2024-02-13 |
| KR102782961B1 (ko) | 2025-03-14 |
| EP4053963A1 (en) | 2022-09-07 |
| ES3058064T3 (en) | 2026-03-06 |
| CN114556667A (zh) | 2022-05-27 |
| JP7322291B2 (ja) | 2023-08-07 |
| KR20210117829A (ko) | 2021-09-29 |
| US20230033916A1 (en) | 2023-02-02 |
| JP2022551283A (ja) | 2022-12-08 |
| EP4053963B1 (en) | 2025-11-26 |
| US12158336B2 (en) | 2024-12-03 |
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