CN109863638B - Fixing device for secondary battery test - Google Patents
Fixing device for secondary battery test Download PDFInfo
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- CN109863638B CN109863638B CN201880004034.4A CN201880004034A CN109863638B CN 109863638 B CN109863638 B CN 109863638B CN 201880004034 A CN201880004034 A CN 201880004034A CN 109863638 B CN109863638 B CN 109863638B
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- magnetic force
- secondary battery
- permanent magnet
- force generating
- generating unit
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
- B25B11/002—Magnetic work holders
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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
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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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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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
- H01M10/44—Methods for charging or discharging
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The fixing device for secondary battery test according to the present invention comprises: a placing table on which a secondary battery to be tested is placed and which is provided as a magnet; a cover unit provided as a magnet to cover the secondary battery; and a magnetic force generating unit providing a magnetic force to the mounting table and the cover unit, wherein when the magnetic force is transmitted from the magnetic force generating unit to the mounting table and the cover unit, an attractive magnetic force is generated between the cover unit and the mounting table to fix the secondary battery placed between the cover unit and the mounting table from moving.
Description
Technical Field
Cross Reference to Related Applications
This application claims the benefit of priority from korean patent application No. 10-2017-.
Technical Field
The present invention relates to a fixing device for testing a secondary battery.
Background
Unlike the primary battery, the secondary battery is rechargeable, and further, the possibility of miniaturization and high capacity is high. Thus, many studies on secondary batteries are recently being conducted. As technology develops and the demand for mobile devices increases, the demand for secondary batteries as an energy source is rapidly increasing.
The secondary battery is classified into a coin type battery, a cylindrical type battery, a prismatic type battery, and a pouch type battery according to the shape of a battery case. In such a secondary battery, an electrode assembly mounted in a battery case is a chargeable and dischargeable power generation device having a structure in which electrodes and separators are stacked.
The electrode assembly may be broadly divided into: a Jelly-roll type electrode assembly in which a separator is interposed between a positive electrode and a negative electrode each provided in the form of a sheet coated with an active material, and then the positive electrode, the separator, and the negative electrode are wound; a stacking type electrode assembly in which a plurality of positive electrodes and negative electrodes are sequentially stacked with separators therebetween; and a stacking/folding type electrode assembly in which the stacking type unit cells are wound together with separators having a long length.
Most of the secondary batteries including such pouch type batteries undergo many related tests during battery tests in the development process of the secondary batteries.
For example, when performing a Nail (Nail) penetration test of the secondary battery, the secondary battery may move while a Nail passes through the secondary battery, and thus it is difficult to accurately perform the Nail penetration test.
Fig. 1 is a plan view illustrating a measured portion of a secondary battery for a nail penetration test.
When the piercing test of the secondary battery 10 according to the related art is performed, the lift may occur at the No. 7 position when the nail passes through the No. 3 position of the secondary battery 10. Here, a secondary short circuit may occur due to movement such as lifting of the secondary battery 10, thereby significantly deteriorating the reliability of the puncture test of the secondary battery 10.
Disclosure of Invention
Technical problem
An aspect of the present invention is to provide a fixing device for a secondary battery test capable of preventing a secondary battery from moving when testing the secondary battery.
Technical scheme
A fixing device for secondary battery testing according to an embodiment of the present invention includes: a mounting table on which a secondary battery to be tested is mounted and which is provided as a magnet; a cover unit provided as a magnet to cover the secondary battery; and a magnetic force generating unit supplying a magnetic force to the mounting table and the cover unit, wherein when the magnetic force is transmitted from the magnetic force generating unit to the mounting table and the cover unit, an attractive magnetic force is generated between the cover unit and the mounting table to fix the secondary battery placed between the cover unit and the mounting table not to move.
Advantageous effects
According to the present invention, the secondary battery can be fixed to prevent the secondary battery from moving when the secondary battery is detected, thereby improving detection reliability.
Further, according to the present invention, the secondary battery between the cover unit and the seating table may be fixed by an attractive magnetic force between the cover unit and the seating table receiving the magnetic force from the magnetic force generating unit. Therefore, the movement of the secondary battery occurring when the nail passes through the secondary battery in the nail penetration test process can be effectively prevented to improve the reliability of the nail test.
Further, since the secondary battery placed between the cover unit and the seating table is fixed by the attractive magnetic force between the cover unit and the seating table, the secondary battery having various shapes and sizes can be easily fixed without damaging the secondary battery.
Drawings
Fig. 1 is a plan view illustrating a measured portion of a secondary battery for a nail penetration test.
Fig. 2 is a conceptual front perspective view of a fixture for secondary battery testing according to an embodiment of the present invention.
Fig. 3 is a sectional view taken along line a-a' of fig. 1.
Fig. 4 is a perspective view of a magnetic force generating unit in a fixing apparatus for secondary battery testing according to an embodiment of the present invention.
Fig. 5 is an exploded perspective view of a magnetic force generating unit in a fixing device for secondary battery testing in accordance with an embodiment of the present invention.
Fig. 6 is a front view illustrating a state in which magnetism of a magnetic force generating unit is turned off (off) in the fixing device for secondary battery test according to an embodiment of the present invention.
Fig. 7 is a front view illustrating a state in which magnetism of a magnetic force generating unit is turned on (on) in a fixture for secondary battery testing according to an embodiment of the present invention.
Fig. 8 is a sectional view of a fixture for secondary battery testing according to another embodiment of the present invention.
Fig. 9 is a sectional view of a magnetic force generating unit in a fixing apparatus for secondary battery testing according to another embodiment of the present invention.
Detailed Description
The objects, specific advantages and novel features of the invention will become more apparent from the following detailed description of the invention when taken in conjunction with the drawings. It should be noted that components of the drawings in the present application are given reference numerals as much as possible using the same numerals even though they are shown in other drawings. Furthermore, the present invention may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. In the following description of the present invention, a detailed description of related art that may unnecessarily obscure the gist of the present invention will be omitted.
Fig. 2 is a conceptual front perspective view of a fixture for secondary battery testing according to an embodiment of the present invention, and fig. 3 is a sectional view taken along line a-a' of fig. 1.
Referring to fig. 2 and 3, the fixing device 100 for secondary battery testing according to an embodiment of the present invention includes a Stage (Stage)110 on which the secondary battery 10 is mounted, a cover unit 120 covering the secondary battery 10, and a magnetic force generating unit 130 providing a magnetic force to the Stage 110 and the cover unit 120, and the fixing device 100 for secondary battery testing fixes the secondary battery 10 so as not to move. The fixing device 100 for secondary battery testing according to an embodiment of the present invention may further include a vertical moving unit 160 for vertically moving the cover unit 120 to be coupled.
Hereinafter, a fixing device for a secondary battery test according to an embodiment of the present invention will be described in detail with reference to fig. 2 to 7.
Referring to fig. 3, for example, a secondary battery 10 to be tested by using a fixture for secondary battery testing may include a battery case 11 having an accommodation space therein and an electrode assembly 12 accommodated in the accommodation space of the battery case 11.
The electrode assembly 12 may be a power generating element that can be charged and discharged and has a structure in which electrodes 12c and separators 12d are combined and alternately stacked.
The electrodes 12c may include a positive electrode 12a and a negative electrode 12 b. Here, the electrode assembly 12 may have a structure in which the positive electrodes 12 a/the separators 12 d/the negative electrodes 12b are alternately stacked. Here, the separator 12d may be disposed between the cathode 12a and the anode 12b and also disposed outside the cathode 12a and the anode 12 b. Here, the separator 12d may be disposed to surround the entire electrode assembly 12 in which the cathode 12 a/the separator 12 d/the anode 12b are stacked.
The separator 12d is made of an insulating material to electrically insulate the positive electrode 12a from the negative electrode 12 b. Here, the separator 12d may be made of, for example, a polyolefin-based resin film such as polyethylene or polypropylene having micropores.
The mounting table 110 may have a flat mounting surface to mount the secondary battery 10 for testing thereon. Here, the placing stage 110 may have a rectangular block (block) shape, for example.
Further, the placing stage 110 may be provided as a magnet. Here, the placing stage 110 may be provided as a ferromagnetic body made of a metal material. Here, the seating stage 110 may include one or more of iron (Fe), nickel (Ni), or cobalt (Co).
The cover unit 120 may be provided as a magnet covering the secondary battery 10. Here, the cover unit 120 may be provided as a ferromagnetic body made of a metal material. Here, the cover unit 120 may include one or more of iron (Fe), nickel (Ni), or cobalt (Co).
Further, the cover unit 120 may have a rectangular block shape, for example.
Fig. 4 is a perspective view of a magnetic force generating unit in a fixing apparatus for secondary battery tests according to an embodiment of the present invention, and fig. 5 is an exploded perspective view of a magnetic force generating unit in a fixing apparatus for secondary battery tests according to an embodiment of the present invention.
Fig. 6 is a front view illustrating a state in which magnetism of the magnetic force generating unit 130 is turned off (off) in the fixing device 100 for secondary battery test according to an embodiment of the present invention, and fig. 7 is a front view illustrating a state in which magnetism of the magnetic force generating unit 130 is turned on (on) in the fixing device 100 for secondary battery test according to an embodiment of the present invention.
Referring to fig. 3 to 5, the magnetic force generating unit 130 may provide a magnetic force to the mounting table 110 and the cover unit 120. Here, an attractive magnetic force may be generated between the cover unit 120 receiving the magnetic force from the magnetic force generating unit 130 and the seating table 110 to fix the secondary battery 10 placed between the cover unit 120 and the seating table 110 not to move.
Further, the magnetic force generating unit 130 may have one side mounted on the mounting table 110 and the other side on which the cover unit 120 is disposed to be vertically movable. Thus, the magnetic force generated in the magnetic force generating unit 130 may be transmitted to the seating table 110 and the cover unit 120.
Further, the magnetic force generating unit 130 may include a pair of ferromagnetic blocks (blocks) 132 and 133, a cylindrical permanent magnet 131 rotatably disposed between the pair of ferromagnetic blocks 132 and 133, and a non-magnetic Block 134 disposed between the pair of ferromagnetic blocks 132 and 133 to rotatably support the cylindrical permanent magnet 131. In addition, the magnetic force generating unit 130 may further include an adjusting part 135 on an end of the cylindrical permanent magnet 131.
The non-magnetic block 134 may be made of one or more of aluminum (Al), copper (Cu), and gold (Au).
The cylindrical permanent magnet 131 may have polarities of N and S poles opposite in polarity on both sides in a lateral direction of the rotation axis C thereof, respectively. Here, as the cylindrical permanent magnet 131 rotates, the magnetism of the magnetic force generating unit 130 may be turned on/off (on/off).
Mounting holes 136 may be formed such that the cylindrical permanent magnet 131 is rotatably mounted on the non-magnetic block 134 and the pair of ferromagnetic blocks 132 and 133. Here, the mounting hole 136 may have a shape corresponding to that of the cylindrical permanent magnet 131. Here, the cylindrical permanent magnet 131 may rotate along the inner wall of the mounting hole 136 such that both sides of the cylindrical permanent magnet 131 alternately face the non-magnetic block 134 and the pair of ferromagnetic blocks 132 and 133.
The adjustment part 135 may be disposed on an end of the cylindrical permanent magnet 131 and also disposed outside the mounting hole 136. Here, as the adjustment part 135 rotates, the cylindrical permanent magnet 131 may equally rotate.
Here, since the adjustment part 135 is rotated to rotate the cylindrical permanent magnet 131, the magnetism of the magnetic force generating unit 130 can be easily turned on/off.
Referring to fig. 5 and 6, since the adjustment part 135 rotates to rotate the cylindrical permanent magnet 131, when each of the N pole end 131a and the S pole end 132b of the cylindrical permanent magnet 131 is disposed to face the non-magnetic block 134, the magnetism of the magnetic force generating unit 130 may be turned off (off).
Referring to fig. 5 and 7, since the adjustment part 135 is rotated to rotate the cylindrical permanent magnet 131, when each of the N pole end 131a and the S pole end 132b of the cylindrical permanent magnet 131 is disposed to face the pair of ferromagnetic pieces 132 and 133, the magnetism of the magnetic force generating unit 130 may be turned on (on).
Thus, referring to fig. 2, 5 and 7, for example, when a Nail penetration test is performed on the secondary battery 10 to be tested, before a Nail (Nail)21 is passed through the secondary battery 10 by using the Nail penetration device 20, the N pole end 131a and the S pole end 132b of the cylindrical permanent magnet 131 are disposed to face the pair of ferromagnetic blocks 132 and 133, respectively, so that the magnetism of the magnetic force generating unit 130 is turned on (on) to fix the secondary battery 10 by the cover unit 120 and the mounting table 110. Here, a magnetic force may be generated in a direction in which the cover unit 120 and the seating table 110 attract each other to fix the secondary battery 10. Thus, when the nail 21 passes through the secondary battery 10, the secondary battery can be fixed without moving.
Referring to fig. 2 and 3, the cover unit 120 may be vertically movably coupled to the magnetic force generating unit 130 by a vertical moving unit 160.
In addition, the cover unit 120 may be vertically movably coupled to the magnetic force generating unit 130 by a vertical moving unit 160.
In addition, the vertical moving unit 160 may include a guide part 150 fixed to the magnetic force generating unit 130 and a movable block 140 coupled to the guide part 150.
The guide protrusion 151 may protrude from the guide part 150. Here, the guide protrusion 151 may protrude in a direction in which the movable block 140 is disposed.
The movable block 140 may have one side vertically movably coupled to the guide portion 150 and the other side on which the cover unit 120 is fixed.
Further, the movable block 140 may have a guide hole 141 into which the guide protrusion 151 is inserted in a vertical direction. Thus, the movable block 140 may be vertically moved by the guide of the guide protrusion 151.
The guide protrusion 151 may include a body 151b disposed in the guide hole 141 and an end 151a protruding to the outside of the guide hole 141. Here, the end 151a of the guide protrusion 151 may have a size greater than that of the guide hole 141 to prevent the movable block 140 from being separated from the guide part 150.
Here, the movable block 140 may include an accommodation protrusion 142 along an edge of the guide hole 141, thereby accommodating an end 151a of the guide protrusion 151. That is, a stepped portion may be formed along an edge of the guide hole 141 of the movable block 140 to provide the receiving portion 143 in which the end 151a of the guide protrusion 151 is received. Here, the receiving portion 143, in which the end 151a of the guide protrusion 151 is received, may have a width corresponding to that of the end 151a of the guide protrusion 151.
Further, the guide hole 141 may have a width corresponding to that of the body 151b of the guide protrusion 151.
The fixing device 100 for secondary battery testing according to an embodiment of the present invention may fix the secondary battery 10 placed between the cover unit 120 and the seating table 110 by the attractive magnetic force between the cover unit 120 and the seating table 110 receiving the magnetic force from the magnetic force generating unit 130. Thus, when the nail penetration test is performed, movement, such as lifting, of the secondary battery 10 may be suppressed when the nail 21 passes through the secondary battery 10 to prevent occurrence of a secondary Short circuit (Short). That is, when a test in which the nail 21 passes through the secondary battery 10 is performed, the secondary battery 10 may be shaken by the impact to cause a secondary short circuit, thereby significantly deteriorating the reliability of the test result.
< embodiment 1>
The secondary battery is fixed by using a fixing device including a mounting table provided as a magnet, a cover unit provided as a magnet and covering the secondary battery, and a magnetic force generating unit, and then a nail penetration test of the secondary battery is performed.
< comparative example 1>
The test conditions (variables) were the same as those in embodiment 1, except that there was no separate fixing device for fixing the secondary battery.
< Experimental example >
The results obtained by performing the nail penetration test on the secondary battery were analyzed and shown in table 1. When the nail penetration test is performed, the state of charge is SOC 100%, and the penetration speed is 1 m/min. Further, the dependent variable is the presence or absence of a fixing means for fixing the secondary battery.
[ Table 1]
| Number of fires (Total test number) | Ignition | |
| Embodiment mode | ||
| 1 | 3(7) | 43％ |
| Comparative example 1 | 6(7) | 86％ |
As shown in table 1, a significant decrease in the ignition rate was observed in embodiment 1 as compared with comparative example 1. In more detail, when the nail penetration test was performed on the secondary battery fixed by the attractive magnetic force between the cover unit and the mounting table through the magnetic force generating unit, the firing rate was 43%, and when the nail penetration test was performed without fixing the secondary battery according to comparative example 1 using a separate fixing device, it was seen that the firing rate was significantly increased to 86%. That is, it can be seen that secondary ignition occurs when the nail penetration test is performed on the secondary battery according to comparative example 1 without fixing the secondary battery. As a result, when the nail penetration test was performed on the secondary battery 10 by using the fixing device for secondary battery test according to embodiment 1, it can be seen that the reliability of the nail penetration test was significantly improved because the secondary battery 10 was fixed without moving.
Fig. 8 is a sectional view of a fixture for secondary battery testing in accordance with another embodiment of the present invention, and fig. 9 is a sectional view of a magnetic force generating unit in a fixture for secondary battery testing in accordance with another embodiment of the present invention.
Referring to fig. 8 and 9, the fixing device 200 for secondary battery testing according to an embodiment of the present invention may include a mounting table 110 on which the secondary battery 10 is mounted, a cover unit 120 covering the secondary battery 10, a magnetic force generating unit 230 providing a magnetic force to the mounting table 110 and the cover unit 120, and a moving unit 160 for making the cover unit 120 to be coupled vertically movable. Here, the fixing device 200 for secondary battery testing according to another embodiment of the present invention may include non-magnets 231b and 231c disposed at both sides of the cylindrical permanent magnet 231 of the magnetic force generating unit 230.
That is, the fixing device 200 for secondary battery testing according to another embodiment of the present invention is different from the fixing device 100 for secondary battery testing according to the previous embodiment in the configuration of the cylindrical permanent magnet 231. Thus, the contents of this embodiment mode and the contents of the embodiment mode repeated according to the foregoing embodiment mode will be briefly described, and further, the differences therebetween will be mainly described.
In more detail, in the fixing device 200 for secondary battery testing according to another embodiment of the present invention, the magnetic force generating unit 230 may include a pair of ferromagnetic blocks 232 and 233, a cylindrical permanent magnet 231 rotatably disposed between the pair of ferromagnetic blocks 232 and 233, and a non-magnetic block 234 disposed between the pair of ferromagnetic blocks 232 and 233 to rotatably support the cylindrical permanent magnet 231.
The cylindrical permanent magnet 231 may have polarities of N and S poles opposite in polarity on both sides in a lateral direction of the rotation axis C thereof, respectively. Here, the cylindrical permanent magnet 231 may be divided into three parts, for example. Thus, the permanent magnet 231a may be disposed at the middle of the cylindrical permanent magnet 231, and the non-magnets 231b and 231c may be disposed at both sides of the permanent magnet 231a, respectively. Thus, when the N and S poles of the permanent magnet 231a are disposed to face the non-magnets 231b and 231c, the non-magnets 231b and 231c disposed at both sides of the permanent magnet 231a may face the ferromagnetic blocks 232 and 233. As a result, in a state in which the N pole and S pole of the permanent magnet 231a face the magnetic force generating unit 230 of the non-magnetic block 234, the magnetic off (off), a more thorough non-magnetic state can be easily formed.
Although the present invention has been particularly shown and described with reference to exemplary embodiments thereof, the fixing device for secondary battery testing according to the present invention is not limited thereto. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention.
Furthermore, the scope of protection of the invention will be clarified by the appended claims.
Claims (11)
1. A fixture for secondary battery testing, comprising:
a mounting table on which a secondary battery to be tested is mounted and which is provided as a magnet;
a cover unit provided as a magnet to cover the secondary battery; and
a magnetic force generating unit providing a magnetic force to the mounting table and the cover unit,
wherein an attractive magnetic force is generated between the cover unit and the mounting table to fix the secondary battery placed between the cover unit and the mounting table from moving when the magnetic force is transmitted from the magnetic force generating unit to the mounting table and the cover unit,
wherein the magnetic force generating unit includes:
a pair of ferromagnetic blocks;
a cylindrical permanent magnet rotatably disposed between the pair of ferromagnetic blocks; and
a non-magnetic block disposed between the pair of ferromagnetic blocks to rotatably support the cylindrical permanent magnet,
wherein the magnetic force generating unit is magnetically turned on/off as the cylindrical permanent magnet rotates,
wherein each of the mount table and the cover unit is provided as a ferromagnetic body made of a metal material, and
wherein the magnetic force generating unit has one side mounted on the mounting table and the other side on which the cover unit is vertically movably disposed to transmit the magnetic force generated in the magnetic force generating unit to the mounting table and the cover unit.
2. The fixing device as claimed in claim 1, wherein mounting holes are formed so that the cylindrical permanent magnet is rotatably mounted on the non-magnetic block and the pair of ferromagnetic blocks, and
as the cylindrical permanent magnet rotates, both sides of the cylindrical permanent magnet alternately face the non-magnetic block and the pair of ferromagnetic blocks.
3. The fixture according to claim 1, wherein the cylindrical permanent magnet has magnetism of N and S poles opposite in polarity on both sides in a direction transverse to a rotation axis thereof.
4. The fixing device according to claim 1, wherein as the cylindrical permanent magnet rotates, when each of N and S pole terminals of the cylindrical permanent magnet is disposed to face the non-magnetic block, magnetism of the magnetic force generating unit is turned off, and
when the N pole terminal and the S pole terminal of the cylindrical permanent magnet are respectively disposed to face the pair of ferromagnetic blocks, the magnetism of the magnetic force generating unit is turned on.
5. The fixture of claim 1 wherein each of the ferromagnetic blocks comprises one or more of Fe, Ni, and Co.
6. The fixture as claimed in claim 1, wherein said non-magnetic block comprises one or more of Al, Cu and Au.
7. The fixture according to claim 1, wherein each of the rest stage and the cover unit comprises one or more of Fe, Ni, and Co.
8. The fixing apparatus according to claim 1, further comprising a vertical moving unit for vertically movably coupling the cover unit to the magnetic force generating unit,
wherein the vertical moving unit includes:
a guide fixed to the magnetic force generating unit; and
a movable block having one side vertically movably coupled to the guide portion and the other side on which the cover unit is fixed.
9. The fixing device according to claim 8, wherein a guide projection is provided on the guide portion, and
the movable block has a guide hole in which the guide protrusion is inserted in a vertical direction, so that the movable block is vertically movable by the guide of the guide protrusion.
10. The fixing device according to claim 9, wherein an end portion of the guide protrusion has a size larger than a width of the guide hole to prevent the movable block from being separated from the guide portion.
11. The fixing device according to claim 10, wherein the movable block includes a receiving protrusion along an edge of the guide hole so as to receive the end of the guide protrusion.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20170087843 | 2017-07-11 | ||
| KR10-2017-0087843 | 2017-07-11 | ||
| KR1020180078398A KR102164255B1 (en) | 2017-07-11 | 2018-07-05 | Fixing equipment for rechargeable battery test |
| KR10-2018-0078398 | 2018-07-05 | ||
| PCT/KR2018/007824 WO2019013535A1 (en) | 2017-07-11 | 2018-07-10 | Fixing device for testing secondary battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109863638A CN109863638A (en) | 2019-06-07 |
| CN109863638B true CN109863638B (en) | 2022-03-04 |
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ID=65001642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880004034.4A Active CN109863638B (en) | 2017-07-11 | 2018-07-10 | Fixing device for secondary battery test |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109863638B (en) |
| WO (1) | WO2019013535A1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109863638A (en) | 2019-06-07 |
| WO2019013535A1 (en) | 2019-01-17 |
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Effective date of registration: 20220811 Address after: Seoul, South Kerean Patentee after: LG Energy Solution,Ltd. Address before: Seoul, South Kerean Patentee before: LG CHEM, Ltd. |