WO2012093652A1 - 充放電検査システム、充放電検査装置のための校正システム及び校正装置 - Google Patents
充放電検査システム、充放電検査装置のための校正システム及び校正装置 Download PDFInfo
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- WO2012093652A1 WO2012093652A1 PCT/JP2012/000008 JP2012000008W WO2012093652A1 WO 2012093652 A1 WO2012093652 A1 WO 2012093652A1 JP 2012000008 W JP2012000008 W JP 2012000008W WO 2012093652 A1 WO2012093652 A1 WO 2012093652A1
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- Prior art keywords
- battery
- inspection
- calibration
- charge
- inspection 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]
- G01R31/385—Arrangements for measuring battery or accumulator variables
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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
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
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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
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
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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
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
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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
Definitions
- the present invention relates to a charge / discharge inspection system for inspecting a secondary battery, and a calibration system and a calibration apparatus suitable for such a system.
- Patent Document 1 describes an inspection device for inspecting the thickness of an electrode mixture of a lithium ion secondary battery electrode.
- the apparatus includes a first ultrasonic sensor for measuring a lithium ion secondary battery electrode and a second ultrasonic sensor for measuring a reference material, and the first ultrasonic sensor is used by using the second ultrasonic sensor. Is calibrated.
- a charge / discharge inspection device for automatically inspecting the quality or characteristics of a secondary battery has been proposed.
- the inspection is performed as one step or the final step of battery production.
- the inspection apparatus is calibrated at a certain frequency in order to maintain the inspection accuracy.
- the inspection is temporarily terminated, and a calibration device for calibration is connected to the inspection device instead of the secondary battery. Carrying in the calibration device and wiring connection with the inspection device are performed manually, and there is a situation that it takes time to prepare for the calibration process.
- the present invention has been made in such a situation, and one of the exemplary purposes of an aspect thereof is to contribute to improving the productivity of battery inspection through the automation of preparatory work for calibration processing.
- An aspect of the present invention relates to a charge / discharge inspection system.
- This system is a charge / discharge inspection apparatus for charging / discharging a plurality of secondary batteries for inspection, and is provided in a power supply, a battery inspection unit containing a plurality of secondary batteries, and a battery inspection unit.
- a charge / discharge inspection device comprising a plurality of contacts for feeding each secondary battery from a cage power supply, and a calibration device for calibrating the charge / discharge inspection device, wherein a plurality of contacts are used instead of the secondary battery.
- a calibration device having at least one connection terminal for connecting to at least one of the contacts, the calibration device to the battery inspection unit, and at least one connection terminal to be connectable to at least one of the plurality of contacts And a transport device for positioning at the transport position.
- the calibration device can be positioned at the transport position by the transport device.
- the conveyance position is a position in the battery inspection unit that enables the connection terminal of the calibration device to be connected to the contact of the battery inspection unit.
- the at least one connection terminal may be a plurality of connection terminals formed in an arrangement that matches the arrangement of the plurality of contacts.
- the battery inspection unit is configured such that a plurality of secondary batteries and a plurality of contacts are relatively movable, and each contact is connected to a corresponding secondary battery by a relative advance of the secondary battery with respect to the contacts.
- the at least one connection terminal is positioned at a position where the secondary battery is to be positioned in the transfer position with respect to the transfer direction of the transfer device, and at least one of the plurality of contacts and the at least one connection terminal is a battery. It may be connected by movement of the secondary battery in the relative forward direction in the inspection unit.
- By positioning the connection terminal instead of the battery it is possible to connect the connection terminal and the contact in the same manner as the relative movement between the battery and the contact.
- the connection operation between the battery and the contact in the automatic inspection process can be used for the connection between the connection terminal and the contact in the calibration process. By automating the connection work, the calibration time can be shortened and the burden on the operator can be reduced.
- the carrier device is configured to be supported on the outside of the battery inspection unit, and an arm unit configured to move the calibration device linearly from the support unit to the carrier position and to be positioned from the support unit. And may be provided.
- the calibration device may have an outer shape so as to avoid interference with the charge / discharge inspection device when positioned by the arm portion. If it does in this way, a calibration device can be smoothly conveyed to a charging / discharging test
- the calibration apparatus may include a first portion that includes a connection terminal and is formed to a size that can be accommodated in the battery inspection unit, and a second portion that is electrically connected to the first portion.
- the transfer device may position the first part at the transfer position and hold the second part outside the battery inspection unit.
- This calibration system is a calibration system for a charge / discharge inspection device for a secondary battery, and the charge / discharge inspection device is provided in a battery inspection unit containing a plurality of secondary batteries, and in each battery inspection unit.
- Still another aspect of the present invention is a calibration apparatus.
- This device is a calibration device for calibrating a charge / discharge inspection device for a secondary battery, and the charge / discharge inspection device is provided in a battery inspection unit that houses a plurality of secondary batteries, and a battery inspection unit. And a plurality of contacts for supplying power to each secondary battery.
- the calibration device includes a connection portion having a plurality of connection terminals for connecting to a plurality of contacts instead of the secondary battery, and the plurality of connection terminals are formed in an arrangement suitable for the arrangement of the plurality of contacts. And at least the connection part is formed in the dimension which can be accommodated in a battery test
- the charge / discharge inspection system of an aspect of the present invention it is possible to contribute to the improvement of the productivity of the inspection device through the automation of the preparatory work for the calibration process.
- a charge / discharge inspection system includes a charge / discharge inspection device for charging / discharging a plurality of secondary batteries for inspection, a calibration device for calibrating the charge / discharge inspection device, and calibration. And a transport device for transporting the device to the charge / discharge inspection device.
- the charge / discharge inspection apparatus includes one or a plurality of battery inspection units and a power supply unit for supplying power to the battery inspection units.
- Each battery inspection unit is configured to receive and inspect collectively a plurality of arranged secondary batteries.
- the battery inspection unit includes a plurality of probes each for measuring or supplying power to each individual secondary battery, and both of the probes are established or disconnected to establish a connection between the probes and the secondary battery. And a moving mechanism for relatively moving back and forth.
- the conveyance device is configured to convey the calibration device from its storage location to an arbitrary battery inspection unit, and further convey the calibration device to an appropriate location in the battery inspection unit. Thereby, automation of conveyance of a calibration device is realized.
- the conveyance position of the calibration device is determined from the viewpoint of increasing the ease of connection work to the charge / discharge inspection device, for example, connection work between the connection terminal of the calibration device and the probe of the battery inspection unit.
- the conveyance position may be determined so that the connection terminal of the calibration device is positioned at a position where the electrode of the secondary battery is to be positioned in the inspection process.
- a calibration terminal may position a connection terminal in the position where an electrode will exist regarding the carrying-in direction to the battery test
- the calibration device may be moved so that the connection terminal approaches the probe in a direction different from the loading direction.
- the calibration device has a connection terminal group formed in an array corresponding to the battery array in the battery inspection unit. Since the connection terminal of the calibration device is formed corresponding to the battery arrangement, the connection work of the calibration device to the charge / discharge inspection device is facilitated.
- the plurality of connection terminals of the calibration device are formed with a number and arrangement interval that match the number and arrangement interval of the plurality of probes of the battery inspection unit.
- the connection terminal may be configured to be brought into contact with the probe to establish an electrical connection with the probe.
- the calibration device is carried into the battery inspection unit in the horizontal direction and positioned in the same manner as the secondary battery, and then advances relative to the probe in the vertical direction, for example.
- the connection terminal of the calibration device approaches the probe and finally comes into contact.
- the plurality of connection terminals of the calibration device can be automatically connected to the plurality of probes of the battery inspection unit.
- FIG. 1 is a diagram schematically showing a charge / discharge inspection apparatus 10 according to an embodiment of the present invention.
- the charge / discharge inspection apparatus 10 is a secondary battery inspection apparatus configured to charge and discharge a large number of secondary batteries in order to collectively inspect a large number of secondary batteries.
- the charge / discharge inspection device 10 includes a power supply device 11 and a battery inspection unit 12.
- the battery inspection unit 12 is also referred to as an inspection unit 12 for simplicity.
- the power supply device 11 and the inspection unit 12 are configured as separate devices and are connected by a connection cable.
- the connection cable includes a power line and a control line.
- the power supply device 11 and the inspection unit 12 may be installed, for example, adjacent or close to each other. Alternatively, the power supply device 11 may be installed away from the inspection unit 12.
- FIG. 1 the electric power system and communication control system of the charging / discharging test
- inspection apparatus 10 are typically shown, a power line is shown as a continuous line which connects each element, and a communication control line is shown with a broken line.
- a power line and a communication control line for connecting the two components are provided separately.
- the power supply device 11 includes a power regeneration converter 13, a constant voltage power supply 14, and a controller 15.
- the power regeneration converter 13, the constant voltage power supply 14, and the controller 15 are accommodated in a power supply enclosure (not shown).
- the power supply device enclosure has a rack or frame structure, for example, and defines a rectangular parallelepiped internal space that houses the power regeneration converter 13, the constant voltage power supply 14, and the controller 15.
- the power regeneration converter 13 relays an external power source (not shown) and a constant voltage power source 14.
- the external power source is, for example, a commercial power source such as an AC power source supplied for industrial use.
- the power regeneration converter 13 functions as a power receiving circuit from an external power source when charging a battery to be inspected in the inspection unit 12, and functions to return power to the external power source when the battery is discharged.
- the power regeneration converter 13 is provided as a power regeneration converter common to the plurality of constant voltage power sources 14.
- the constant voltage power supply 14 adjusts and outputs the power supplied from the external power supply via the power regeneration converter 13.
- a plurality of constant voltage power supplies 14 (five in the illustrated example) are provided, and each constant voltage power supply 14 is connected to the power regeneration converter 13.
- Each of the constant voltage power supplies 14 has a plurality of channels, and an individual buck-boost converter 28 is connected to each channel.
- the constant voltage power supply 14 provides a voltage and current to the buck-boost converter 28 that is higher than the voltage and current that meet the battery test specifications.
- the constant voltage power source 14 is, for example, a DC-DC converter, and preferably an insulated bidirectional DC-DC converter.
- the controller 15 controls the charge / discharge inspection apparatus 10. That is, the controller 15 is configured to control the inspection unit 12, the power regeneration converter 13, and the constant voltage power supply 14.
- the controller 15 may be managed by a host control device or a management server.
- the management server may manage a calibration device and a conveyance device described later.
- a data processing unit 16 is connected to the controller 15.
- the data processing unit 16 collects and stores measurement data such as battery voltage, current, and temperature obtained by the inspection unit 12 via the controller 15.
- the data processing unit 16 processes the collected data and outputs it by an output means such as an associated display or printer.
- the data processing unit 16 is a known personal computer, for example.
- the controller 15 and the data processing unit 16 are connected by a known method such as a LAN.
- the inspection unit 12 is equipped with a plurality of step-up / step-down units 17.
- the step-up / step-down unit 17 is preferably provided in an arrangement section different from the inspection stage section in which the inspection stage is arranged in the housing 22 (see FIG. 2) of the inspection unit 12.
- the buck-boost unit 17 mounted on the inspection unit 12 includes a plurality of buck-boost converters 28 and a control circuit 29 for controlling these buck-boost converters 28.
- Each of the step-up / step-down units 17 is connected to the constant voltage power supply 14 by a power cable 24 and is connected to the controller 15 by a communication cable 25.
- the step-up / step-down converter 28 adjusts the input given from the constant voltage power supply 14 through the power cable 24 to a voltage and a current that meet the inspection specification.
- the output of the buck-boost converter 28 is given to a load 35 to be inspected.
- the load 35 is, for example, a secondary battery 40 (see FIG. 2).
- the inspection unit 12 includes a plurality of measurement circuits 34.
- the measurement circuit 34 measures the state of the load 35.
- the measurement circuit 34 includes, for example, at least one of a temperature measurement circuit, a voltage measurement circuit, and a current measurement circuit, and measures at least one of the temperature, voltage, and current of the load 35.
- the measurement result is sent to the controller 15 and further sent to the data processing unit 16.
- the measurement result may be relayed to the controller 15 by a known communication unit such as a remote I / O provided in the inspection unit 12.
- a total number of step-up / down converters 28 equal to the number of batteries 40 that can be inspected collectively at the inspection stage 42 (see FIG. 2) are provided. That is, one step-up / step-down converter 28 is associated with each load 35, and the same number of step-up / step-down converters 28 as the loads 35 are provided. Similarly, a measurement circuit 34 is provided for each load 35.
- FIGS. 2 to 5 are diagrams schematically showing a main part of the inspection unit 12 of the charge / discharge inspection apparatus 10 according to an embodiment of the present invention.
- 2 and 3 are a front view and a side view, respectively, when the battery 40 is carried in (or carried out after the inspection) for inspection.
- 4 and 5 are a front view and a side view, respectively, showing a state during inspection.
- 3 and 5 are views of the main part of the configuration shown in FIGS. 2 and 4 when viewed from the side.
- an XYZ orthogonal coordinate system is defined as shown. That is, the arrangement direction of the batteries 40 is the X direction, the vertical direction is the Y direction, and the direction orthogonal to both is the Z direction.
- the inspection unit 12 includes an inspection stage 42 and a probe unit 46.
- the inspection stage 42 is configured to arrange a large number of batteries 40 to be inspected, for example, in a matrix.
- the probe unit 46 includes a contact for inspecting the battery 40, for example, a probe 44.
- the probe unit 46 includes a large number of probes 44 provided in an array corresponding to the matrix array of the inspection stage 42.
- the inspection stage 42 and the probe unit 46 face each other, and a battery array space 48 is formed between them.
- the inspection stage 42 is disposed below the probe unit 46 in the vertical direction.
- a cross flow fan 50 for adjusting the temperature of the battery 40 is attached below the inspection stage 42.
- the housing 22 of the inspection unit 12 accommodates an inspection stage 42 and a probe unit 46.
- the housing 22 has a structure that closes the internal space from the external space and holds the contents so as not to be seen from the outside, as shown.
- casing 22 is provided with the wall part and door part (not shown) for demarcating internal space.
- the housing 22 may have a structure in which the contents are opened to the outside and visible from the outside.
- the housing 22 may be a rack, a frame, or a frame structure, for example.
- the batteries 40 have a rectangular parallelepiped shape in the illustrated example, and are arranged in the horizontal direction (X direction) with the side surfaces facing each other and spaced from the adjacent batteries 40.
- the side surface of the battery 40 is a plane parallel to the vertical direction (Y direction).
- the battery 40 is carried into the inspection unit 12 while being held on the pallet 52, and is inspected and carried out.
- the battery 40 has one or a plurality of (for example, two) electrodes 41 on the upper surface thereof.
- the shape and arrangement of the battery 40 are not limited to this, and may have any shape or may be arranged in any arrangement. Further, the arrangement and number of electrodes are not limited to the illustrated form.
- the loading / unloading direction of the pallet 52 is indicated by an arrow. Further, the positions when the pallet 52 and the battery 40 mounted thereon are carried into the inspection stage 42 are indicated by broken lines.
- the pallet 52 and the battery 40 are carried into or out of the inspection unit 12 by the pallet carrying device 60.
- the pallet transport device 60 is configured to be able to transport the pallet 52 linearly in each of the X direction, the Y direction, and the Z direction, for example.
- the pallet transport device 60 is configured to be extendable in the X direction from the support portion in a state where the pallet 52 is mounted with a support portion that is positioned in the YZ plane, a moving mechanism for moving the support portion in the YZ plane. An arm portion that is provided.
- a part of the side wall of the inspection unit 12 is configured as a door 54 that can be opened and closed.
- the door 54 is opened when the battery 40 is carried in and out, and is closed when the battery 40 is inspected.
- the battery array space 48 is partitioned from the external space during inspection.
- the pallet transport device 60 first transports the pallet 52 to a position adjacent to the door 54 outside the inspection unit 12, and carries the pallet 52 to the inspection stage 42 through the door 54 by extending the arm portion in the X direction.
- the pallet transport device 60 places the pallet 52 on the inspection stage 42 so that each battery 40 is positioned directly below the corresponding probe 44.
- the inspection stage 42 is a support table for mounting and supporting a plurality of batteries 40 to be inspected.
- the inspection stage 42 supports the battery 40 by supporting a pallet 52 on which the battery 40 is mounted, instead of directly supporting the battery 40.
- the inspection stage 42 for example, arranges a plurality (for example, several to several tens or more) of batteries 40 in a matrix or in a line along a plane perpendicular to the vertical direction (for example, a plane parallel to the floor surface).
- the inspection unit 12 may include a moving mechanism that relatively moves the inspection stage 42 and the probe unit 46 so that the probe 44 is moved toward and away from the battery 40.
- the moving mechanism provides relative movement, for example, in the vertical direction between the inspection stage 42 and the probe unit 46.
- the moving mechanism may be a known moving mechanism having such a function.
- the position of the probe unit 46 is fixed, and the inspection stage 42 is moved up and down by a vertical moving mechanism (see FIG. 5).
- the battery 40 is moved together with the pallet 52 by the movement of the inspection stage 42, and the electrode 41 and the probe 44 of the battery 40 are brought into contact with and separated from each other.
- the probe unit 46 may be movable together with the inspection stage 42 or instead of the inspection stage 42. In this way, in the inspection unit 12, the plurality of secondary batteries 40 and the plurality of probes 44 can be relatively advanced and retracted, and the secondary batteries 40 corresponding to each probe 44 by the relative advance of the secondary battery 40 with respect to the probes 44. 40 to be connected.
- the probe 44 is in contact with the electrode 41 of each battery 40 and applies power to each battery 40.
- the plurality of probes 44 are provided in an array corresponding to the array of the plurality of batteries 40.
- the number and arrangement interval of the probes 44 coincide with the number and arrangement interval of the electrodes 41.
- six batteries are arranged in a row with their side surfaces facing each other, and corresponding to this, six sets of probes 44 are similarly arranged in a row.
- one battery 40 is provided with two electrodes 41, and two probes 44 are provided correspondingly (see FIGS. 3 and 5). Further, a contact (not shown) for measuring other characteristics such as the temperature of the battery 40 may be provided.
- the probe unit 46 includes, for example, a support plate for supporting the probe 44, and this support plate is provided to face the inspection stage 42. Each probe 44 protrudes from the support plate toward the inspection stage 42. On the opposite side of the support plate from the inspection stage 42, various electrical components 56 including the measurement circuit 34, the step-up / step-down unit 17 and the like are accommodated. A space for this is secured (see FIG. 3).
- the measurement circuit 34 is attached to each probe 44 and is installed in the vicinity of the probe 44.
- the electrical component 56 may be provided exposed on the upper surface of the casing 22 of the inspection unit 12.
- the power cable 24 and the communication cable 25 that connect the inspection unit 12 to the power supply device 11 may extend from the side opposite to the door 54 in the X direction.
- This electrical component housing space is partitioned from the battery array space 48 by the probe unit 46, and may be used as an exhaust space for exhausting the airflow exhausted from the battery array space 48.
- This exhaust space may also be partitioned from the external space in the same manner as the rectifying space and the battery array space 48 described above.
- the batteries 40 are arranged in one row, and six batteries 40 can be accommodated in the inspection unit 12. It is also possible to configure the inspection unit 12 to accommodate more (or fewer) batteries. For example, the number in the arrangement direction (X direction) may be increased, or the number of columns of the batteries 40 may be two or more. Furthermore, a plurality of battery inspection units 12 including the inspection stage 42 and the probe unit 46 may be stacked in the vertical direction. In this way, the number of batteries that can be inspected collectively can be increased.
- the cross flow fan 50 is attached to each battery row.
- the cross flow fan 50 is disposed along the arrangement direction of the batteries 40.
- the cross-flow fan 50 has an air outlet facing the battery 40.
- the cross-flow fan 50 sucks air from the lateral direction (Z direction) and blows upward toward the battery 40 (Y direction).
- the length of the cross flow fans 50 in the arrangement direction is equal to or longer than the arrangement length of the batteries 40.
- a plurality of cross flow fans 50 may be provided along the battery arrangement direction with respect to one battery row, or a plurality of battery rows may share one cross flow fan 50.
- a fan such as a fan, a circulator, or a blower may be disposed along the arrangement direction of the batteries 40.
- the inspection stage 42 a rectifying space for rectifying an air flow sent from the cross flow fan 50 and directed to each battery 40 may be formed.
- the inspection stage 42 includes a battery support plate for supporting the battery 40 or the pallet 52, a mounting plate for mounting the cross flow fan 50, a battery support plate and a mounting plate. You may provide the side plate connected by both edge parts.
- the battery 40 is first carried into the inspection unit 12 by the pallet transport apparatus 60 in a state where the battery 40 is arranged on the pallet 52.
- the pallet conveyance device 60 positions the pallet 52 on the inspection stage 42 so that the electrode 41 of each battery 40 is positioned directly below each probe 44 of the probe unit 46 (FIG. 2).
- the pallet 52 and each battery 40 are moved vertically upward by the moving mechanism of the inspection stage 42, and the electrical connection between the electrode 41 and the probe 44 is established by the contact of the electrode 41 with the probe 44 (FIG. 4).
- the preparation stage for inspection is completed.
- the battery 40 is inspected under the control of the controller 15.
- a voltage profile or a current profile is predetermined for each inspection item.
- the controller 15 controls charging / discharging of each battery 40 according to such a profile.
- measurement values for necessary measurement items are acquired.
- An inspection is executed based on the measured value, and for example, the quality of each battery 40 is determined.
- the pallet 52 and the battery 40 are unloaded from the inspection unit 12 in the reverse flow to the loading.
- the battery 40 to be inspected next is mounted on the pallet 52 and carried into the inspection unit 12, and the inspection is executed in the same manner.
- a calibration process of the charge / discharge inspection apparatus 10 is performed using a calibration system 100 described later.
- FIG. 6 is a diagram schematically showing a calibration system 100 according to an embodiment of the present invention.
- the calibration system 100 is configured to include a calibration device 102 for calibrating the charge / discharge inspection device 10 and a transport device 104 for transporting the calibration device 102.
- the calibration device 102 includes at least one connection terminal 106 for connecting to at least one of the plurality of probes 44 instead of the secondary battery 40.
- the connection terminal 106 has a configuration similar to that of the electrode 41 of the secondary battery 40, and at least one of the plurality of probes 44 and the at least one connection terminal 106 are electrically connected directly by contact.
- the probe 44 and the connection terminal 106 may be connected by wiring.
- six pairs of connection terminals 106 are shown in the X direction corresponding to the battery arrangement shown in FIGS. In the figure, two connection terminals 106 constituting a pair are arranged in the Z direction.
- the calibration device 102 includes a connection unit 108 having a plurality of connection terminals 106 for connecting to the plurality of probes 44 instead of the secondary battery 40.
- the upper part of the calibration device 102 is configured as a connection unit 108.
- the connection part 108 is a connection terminal support plate for supporting the connection terminal 106, for example.
- the entire calibration device 102 including the connection portion 108 is formed to have a size that can be accommodated in the battery array space 48 of the inspection unit 12.
- the plurality of connection terminals 106 are formed in an arrangement that matches the arrangement of the plurality of probes 44.
- the number and interval of the plurality of connection terminals 106 match the number and interval of the plurality of probes 44.
- the plurality of connection terminals 106 may be formed in an arrangement that matches a part of the arrangement of the plurality of probes 44. That is, the number of connection terminals 106 may be smaller than that of the probe 44. In this case, the calibration of all the probes 44 may be completed by switching the connection terminal 106 from the calibrated probe 44 to the uncalibrated probe 44.
- some of the plurality of connection terminals 106 may be formed in an arrangement that matches the arrangement of the probes 44. That is, the number of connection terminals 106 may be larger than that of the probes 44.
- the calibration apparatus 102 may include a large number of connection terminals 106 arranged at various intervals, and may be configured to be compatible with the probes 44 having various arrangement intervals.
- the connection terminal group to be used can be selected according to the probe interval that varies depending on the design of the probe unit 46.
- the transfer device 104 is an automatic transfer device for transferring the calibration device 102 to a predetermined transfer position inside the battery inspection unit 12 from an external storage location.
- the transport device 104 is configured to be able to transport the calibration device 102 linearly in each of the X direction, the Y direction, and the Z direction.
- a known automatic conveyance device having such a function can be used as the conveyance device 104.
- the transport device 104 is configured to be able to advance and retreat in the X direction from the support unit in a state where the support unit positioned in the YZ plane, a moving mechanism for moving the support unit in the YZ plane, and the calibration device 102 are mounted. An arm portion that is provided.
- a dedicated conveying device for conveying the calibration device 102 may be used, and the conveying device 104 may be the pallet conveying device 60 described above.
- the transport path to the inspection unit 12 is common to the secondary battery, and the battery and the transport device can be shared.
- the transport device 104 first transports the calibration device 102 to a position adjacent to the door 54 outside the inspection unit 12.
- the conveyance direction of the calibration device 102 is indicated by an arrow.
- the position when the calibration apparatus 102 is conveyed to the inspection stage 42 is indicated by a broken line.
- the conveyance position of the calibration device 102 is a position where at least one connection terminal 106 can be connected to at least one of the plurality of probes 44.
- the transport device 104 positions the calibration device 102 on the inspection stage 42 so that each connection terminal 106 is positioned directly below the corresponding probe 44. In this way, the calibration device 102 is delivered from the transport device 104 to the inspection unit 12.
- the transport device 104 that has passed the calibration device 102 may stand by as it is.
- the transport device 104 may be moved for transporting the battery 40.
- connection terminal 106 is positioned at a position where the secondary battery 40 is to be positioned in the direction in which the transport device 104 carries the inspection unit 12.
- connection terminal 106 of the calibration device 102 placed at the transport position on the inspection stage 42 by the transport device 104 is positioned at a position where the secondary battery 40 is to be positioned in the horizontal plane.
- the calibration device 102 is moved from the transport position to the connection position with the probe unit 46 by the moving mechanism of the inspection unit 12.
- the position of the probe unit 46 is fixed, and the inspection stage 42 is moved up and down by a vertical movement mechanism.
- the calibration device 102 is moved by the movement of the inspection stage 42, and the connection terminal 106 and the probe 44 are brought into contact with and separated from each other.
- the probe unit 46 may be movable together with the inspection stage 42 or instead of the inspection stage 42. In this way, the probe 44 and the connection terminal 106 are connected by relative movement in the same direction as the relative movement direction for connection with the probe 44 of the secondary battery 40.
- the transport direction of the transport device 104 is not limited to the horizontal direction (X direction), and the connection direction of the calibration device 102 to the probe unit 46 (that is, the relative movement direction of the inspection stage 42 and the probe unit 46) is also the vertical direction (Y Direction). These can be changed according to the shape and arrangement of the batteries.
- the transport direction of the transport device 104 and the connection direction of the probe unit 46 of the calibration device 102 are directions that intersect each other, preferably orthogonal directions. For example, when the battery has a cylindrical shape and has electrodes at one end or both ends thereof, the batteries are laid in the Z direction, a plurality of the batteries are arranged in the X direction, and conveyed to the inspection unit 12 in the X direction. A configuration in which the unit 46 is connected in the Z direction is also conceivable.
- FIG. 8 is a block diagram showing the calibration apparatus 102 according to an embodiment of the present invention.
- the calibration device 102 includes a standard resistor 130, a measuring instrument 132, and a calibration control circuit 134 in addition to the connection terminal 106 described above.
- a pair of connection terminals 106 are provided corresponding to the pair of probes 44.
- Each of the pair of probes 44 corresponds to each of the positive and negative electrodes 41 of the battery 40, and each of the pair of probes 44 is connected to each of the positive and negative electrodes 41 during the inspection. Therefore, the pair of connection terminals 106 also correspond to the respective probes 44 corresponding to the positive and negative electrodes of the battery 40.
- the measurement circuit 34 is connected to the probe 44, and the measurement circuit 34 includes, for example, a detection resistor for measuring the current flowing through the battery during the inspection.
- the detection resistor is provided on the path of the charge / discharge current of the secondary battery between the output terminal of the buck-boost converter 28 and the probe 44. A voltage drop proportional to the charge / discharge current occurs in the detection resistor. The current flowing through the detection resistor is measured.
- the standard resistor 130 is mounted between the terminals of the pair of probes 44 instead of the secondary battery in the calibration process.
- a path including the detection resistor of the measurement circuit 34 and the standard resistor 130 in series is configured. That is, from the step-up / step-down converter 28, the one probe 44, one connection terminal 106, the standard resistor 130, the other connection terminal 106, the other probe 44, and the detection resistance of the measurement circuit 34, return to the step-up / down converter 28. It is a route.
- the measuring instrument 132 When a current is supplied from the buck-boost converter 28 to the standard resistor 130 through the probe 44 and the connection terminal 106 in the calibration process, a voltage drop proportional to the current occurs in the standard resistor 130.
- the measuring instrument 132 generates a current calibration value indicating the current flowing through the standard resistor 130 based on the voltage drop of the standard resistor 130 in the calibration process.
- the measuring instrument 132 is, for example, a digital multimeter.
- the resistance value of the standard resistor 130 is known, and its variation is negligible. Then, it can be said that the current value indicated by the current calibration value indicates the true current value flowing through the path including the standard resistor 130.
- the calibration control circuit 134 controls the calibration process. For example, the calibration control circuit 134 obtains the current calibration value a plurality of times by changing the current command value to the buck-boost converter 28. Based on this acquisition result, the calibration control circuit 134 calculates, for example, the relationship between the true current value obtained by the measuring instrument 132 and the measured value by the measuring circuit 34, and calibrates the measured value of the measuring circuit 34. Obtain calibration parameters. Alternatively, the calibration control circuit 134 calculates the relationship between the true current value obtained by the measuring instrument 132 and the current command value to the buck-boost converter 28 to obtain a calibration parameter.
- the calibration control circuit 134 acquires information necessary for calculation including a measurement value by the measurement circuit 34 and a current command value to the buck-boost converter 28 from the management server 110 or from the controller 15 through the management server 110.
- the calibration control circuit 134 transmits the calculated calibration parameter to the management server 110.
- the transmitted calibration parameters are stored in the management server 110 or the controller 15 for use in inspection.
- one standard resistor 130 is shown for the pair of connection terminals 106.
- the calibration apparatus 102 includes a plurality of pairs of connection terminals 106, the same number of standard resistors 130 as the number of connection terminal pairs may be provided.
- one standard resistor 130 may be shared by a plurality of pairs of connection terminals 106, and the connection terminal 106 connected to the standard resistor 130 may be selected by switching with a switch.
- the calibration device 102 can be positioned at the transport position inside the inspection unit 12 by the transport device 104.
- the burden on the operator can be reduced and the calibration time can be shortened.
- Each probe 44 of the probe unit 46 and each connection terminal 106 of the calibration device 102 are aligned with each other and can be directly connected at once by relative movement and contact.
- Calibration time can be shortened through automation of the connection work. The downtime of the inspection apparatus required for the calibration process is reduced, and the inspection throughput can be improved.
- the charge / discharge inspection apparatus 10 includes a plurality of inspection units 12, when the calibration apparatus 102 is transferred to one inspection unit 12 by the transport apparatus 104 and executes the calibration process, another inspection unit is provided. 12 can perform a battery test.
- the transfer device 104 is brought into a free state by passing the calibration device 102 to the inspection unit 12 (that is, a state in which another article such as the battery 40 can be transferred), and the other inspection unit 12 is used by using the transfer device 104. Then you can continue the battery inspection.
- a charge / discharge inspection system or a calibration system is provided in which a battery inspection can be performed or continued by another inspection unit 12 even when one inspection unit 12 is being calibrated.
- the battery inspection may be performed using a transport device (for example, the pallet transport device 60) different from the transport device 104.
- FIG. 9 is a diagram schematically showing a calibration system 200 according to an embodiment of the present invention.
- the calibration system 200 illustrated in FIG. 9 is different from the calibration system 100 including the integrated calibration device 102 in that the calibration system 200 includes a first calibration device 202 and a second calibration device 204.
- the description of the same configuration as the above-described embodiment will be appropriately omitted for the sake of simplicity.
- the first calibration device 202 includes the connection terminal 106 and is dimensioned to be accommodated in the battery inspection unit 12.
- the connection terminal 106 has the same configuration as that of the above-described embodiment.
- the second calibration device 204 is electrically connected to the first calibration device 202 by a cable 206.
- the first calibration device 202 is positioned at the transport position by the transport device 208 and further connected to the probe unit 46 by the transport device 208.
- the second calibration device 204 is held outside the inspection unit 12 by the transport device 208.
- the transport device 208 includes a support part 210 disposed outside the inspection unit 12 and an arm part 212 configured to be movable back and forth or extendable from the support part 210.
- the support part 210 is moved in the Y direction or in the Y direction and the Z direction by a moving mechanism capable of moving the support part 210 in at least the Y direction, preferably in the Y direction and the Z direction.
- the arm unit 212 can move forward and backward from the support unit 210 in the X direction, and the first calibration device 202 is linearly moved from the support unit 210 to the transport position for positioning.
- the first calibration device 202 is fixed or placed on the arm unit 212, and the second calibration device 204 is fixed or placed on the support unit 210.
- the outer shape of the first calibration device 202 is formed so as to avoid interference with the inspection unit 12 when being positioned by the arm portion 212. For example, when the first calibration device 202 is carried into the inspection unit 12 by the arm unit 212, the first calibration device 202 is prevented from contacting or colliding with the first calibration device 202 and the arm unit 212 and the probe unit 46 and the inspection stage 42.
- the dimensions are specified.
- the transport device 208 first transports the first calibration device 202 and the second calibration device 204 from the storage location of the calibration device to a position adjacent to the door 54 outside the inspection unit 12.
- the first calibration device 202 held by the transport device 208 is indicated by a broken line in FIG.
- the transfer device 208 extends the arm portion 212 to the battery arrangement space 48 of the inspection unit 12, thereby moving the first calibration device 202 to the transfer position of the inspection unit 12 while holding the second calibration device 204 on the support portion 210. To do.
- the position of the support portion 210 in the Y direction is determined so as to take some distance between the connection terminal 106 and the probe unit 46 in order to avoid interference between the connection terminal 106 and the probe 44.
- the transfer device 208 positions the arm unit 212 and the first calibration device 202 so that each connection terminal 106 is positioned immediately below the corresponding probe 44.
- the transport device 208 moves the support portion 210 in the vertical direction so that the connection terminal 106 of the first calibration device 202 is brought into contact with and connected to the probe 44 of the probe unit 46.
- the inspection stage 42 may be raised and the arm unit 212 may be supported by the inspection stage 42.
- connection terminal portion can be reduced in size and simplified by separating the first calibration device 202 as the connection terminal portion from the second calibration device 204.
- the design of the insertion part to the inspection unit 12 can be facilitated.
- the second calibration device 204 is held outside without being inserted into the inspection unit 12. Therefore, compared with the case where the entire calibration apparatus is inserted into the inspection unit 12, the influence of the heat generated by the second calibration apparatus 204 on the calibration process in the inspection unit 12 can be reduced.
- the charge / discharge inspection apparatus 10 includes a plurality of inspection units 12
- the calibration apparatuses 202 and 204 are executing the calibration process by one inspection unit 12 by the transport apparatus 208, other inspection units are used. 12
- the battery can be transported using the pallet transport device 60 and the battery inspection can be performed.
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Abstract
Description
Claims (7)
- 検査のために複数の二次電池を充放電するための充放電検査装置であって、電源と、複数の二次電池を収容する電池検査ユニットと、前記電池検査ユニットに設けられており前記電源から各二次電池に給電するための複数の接触子と、を備える充放電検査装置と、
前記充放電検査装置の校正をするための校正装置であって、二次電池に代えて前記複数の接触子の少なくとも1つに接続するための少なくとも1つの接続端子を備える校正装置と、
前記校正装置を前記電池検査ユニットへと、前記少なくとも1つの接続端子を前記複数の接触子の少なくとも1つに接続可能とする搬送位置に位置決めするための搬送装置と、を備えることを特徴とする充放電検査システム。 - 前記少なくとも1つの接続端子は、前記複数の接触子の配列に適合する配列で形成された複数の接続端子であることを特徴とする請求項1に記載の充放電検査システム。
- 前記電池検査ユニットは、前記複数の二次電池と前記複数の接触子とが相対的に進退可能とされ、接触子に対する二次電池の相対前進によって各接触子が対応する二次電池に接続されるよう構成されており、
前記少なくとも1つの接続端子は前記搬送位置において、前記搬送装置の搬送方向に関して二次電池の位置決めされるべき位置に位置決めされ、
前記複数の接触子の少なくとも1つと前記少なくとも1つの接続端子とは、前記電池検査ユニットでの二次電池の相対前進方向の移動によって接続されることを特徴とする請求項1または2に記載の充放電検査システム。 - 前記搬送装置は、前記電池検査ユニットの外側に配置される支持部と、該支持部から進退可能に構成されており前記校正装置を前記支持部から前記搬送位置へと直線的に移動させて位置決めするためのアーム部と、を備え、
前記校正装置は、前記アーム部により位置決めされる際に前記充放電検査装置との干渉を避けるよう外形が形成されていることを特徴とする請求項1から3のいずれかに記載の充放電検査システム。 - 前記校正装置は、前記接続端子を含み前記電池検査ユニットに収容可能な寸法に形成されている第1部分と、該第1部分と電気的に連結された第2部分と、を備え、
前記搬送装置は、前記第1部分を前記搬送位置に位置決めし、前記第2部分を前記電池検査ユニットの外側に保持することを特徴とする請求項1から4のいずれかに記載の充放電検査システム。 - 二次電池の充放電検査装置のための校正システムであって、
前記充放電検査装置は、複数の二次電池を収容する電池検査ユニットと、前記電池検査ユニットに設けられており各二次電池に給電するための複数の接触子と、を備えており、
前記充放電検査装置の校正をするための校正装置であって、二次電池に代えて前記複数の接触子の少なくとも1つに接続するための少なくとも1つの接続端子を備える校正装置と、
前記電池検査ユニットにおいて前記校正装置を、前記複数の接触子の少なくとも1つを前記少なくとも1つの接続端子に接続可能とする搬送位置に位置決めするための搬送装置と、を備えることを特徴とする校正システム。 - 二次電池の充放電検査装置の校正をするための校正装置であって、
前記充放電検査装置は、複数の二次電池を収容する電池検査ユニットと、前記電池検査ユニットに設けられており各二次電池に給電するための複数の接触子と、を備え、
前記校正装置は、二次電池に代えて前記複数の接触子に接続するための複数の接続端子を有する接続部を備え、該複数の接続端子は前記複数の接触子の配列に適合する配列で形成されており、少なくとも前記接続部は前記電池検査ユニットに収容可能な寸法に形成されていることを特徴とする校正装置。
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