Evaluation apparatus and evaluation method of sheet type cell
First Claim
1. An evaluation method of a sheet type secondary cell for evaluating a charging and/or discharging characteristic of the sheet type secondary cell capable of charging and/or discharging and in which a storage layer that stores electrons during charging operation and that releases the electrons during a discharging operation is sandwiched by layers of a positive electrode and a negative electrode, the evaluation method comprising the step ofbringing an electrode probe into electrical contact with a first of a plurality of measurement parts on an outer surface of at least one of the positive electrode and the negative electrode, and measuring an electric characteristic value at the first measurement part, so as to evaluate a charging and/or discharging characteristic of the sheet type secondary cell and to perform identification of an abnormal area in the sheet type secondary cell,wherein the electrode probe is brought into contact with the outer surface of one of the positive electrode and the negative electrode, and a fixed electric potential is applied to the entire electrode of the other of the positive electrode and the negative electrode,wherein a charge source and a voltage meter are connected to the electrode probe, the charge source supplies charging power to the to the first measuring part via the electrode probe, and a charge characteristic is detected from a change in a measurement voltage of the voltage meter as the sheet type secondary cell is charged from a non-charged state to a fully charged state, so as to evaluate the charging and/or discharging characteristic of the sheet type secondary cell,wherein the sheet type secondary cell is divided into said plurality of measurement parts, each having a same size and configuration,wherein the first measurement part is changed to another of the plurality of measurement parts by movement of at least one of the electrode probe and the sheet type secondary cell, and the electric characteristic value is measured at each of the plurality of measurement parts so as to make an evaluation,wherein measurement results and evaluation results at each of the plurality of the measurement parts are output collectively and displayed or printed out as a greyscale image of the secondary cell whose greyscale values are indicative of normality or abnormality for each of the measurement parts.
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Accused Products
Abstract
An electrode probe is brought into contact with a measurement part on an outer surface of at least one of the positive electrode and the negative electrode of a sheet type cell, and quantity of electricity is measured at the measurement part, so as to evaluate the sheet type cell. The electrode probe may be connected to a voltage meter and to a charge source or a discharge source, and the evaluation made by detecting a charge characteristic that changes the cell from a non-charged state to a fully charged state, a discharge characteristic that changes the cell from a fully charged state to the non-charged state, or a measurement voltage of the voltage meter when the cell is in the fully charged state.
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Citations
14 Claims
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1. An evaluation method of a sheet type secondary cell for evaluating a charging and/or discharging characteristic of the sheet type secondary cell capable of charging and/or discharging and in which a storage layer that stores electrons during charging operation and that releases the electrons during a discharging operation is sandwiched by layers of a positive electrode and a negative electrode, the evaluation method comprising the step of
bringing an electrode probe into electrical contact with a first of a plurality of measurement parts on an outer surface of at least one of the positive electrode and the negative electrode, and measuring an electric characteristic value at the first measurement part, so as to evaluate a charging and/or discharging characteristic of the sheet type secondary cell and to perform identification of an abnormal area in the sheet type secondary cell, wherein the electrode probe is brought into contact with the outer surface of one of the positive electrode and the negative electrode, and a fixed electric potential is applied to the entire electrode of the other of the positive electrode and the negative electrode, wherein a charge source and a voltage meter are connected to the electrode probe, the charge source supplies charging power to the to the first measuring part via the electrode probe, and a charge characteristic is detected from a change in a measurement voltage of the voltage meter as the sheet type secondary cell is charged from a non-charged state to a fully charged state, so as to evaluate the charging and/or discharging characteristic of the sheet type secondary cell, wherein the sheet type secondary cell is divided into said plurality of measurement parts, each having a same size and configuration, wherein the first measurement part is changed to another of the plurality of measurement parts by movement of at least one of the electrode probe and the sheet type secondary cell, and the electric characteristic value is measured at each of the plurality of measurement parts so as to make an evaluation, wherein measurement results and evaluation results at each of the plurality of the measurement parts are output collectively and displayed or printed out as a greyscale image of the secondary cell whose greyscale values are indicative of normality or abnormality for each of the measurement parts.
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8. An evaluation apparatus of a sheet type secondary cell for evaluating a charging and/or discharging characteristic of the sheet type secondary cell capable of charging and/or discharging in which a storage layer that stores electrons during charging operation and that releases the electrons during a discharging operation is sandwiched by layers of a positive electrode and a negative electrode, the evaluation apparatus comprising:
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an electrode probe that is configured to be brought into electrical contact with a first of a plurality of measurement parts on an outer surface of at least one of the positive electrode and the negative electrode; a measurement evaluation unit that configured to measure an electric characteristic value at the measurement part via the electrode probe, so as to evaluate the charging and/or discharging characteristic of the sheet type secondary cell and to perform identification of an abnormal area in the sheet type secondary cell; a charge source connected to the electrode probe; a relative movement mechanism configured to move at least one of the electrode probe and the sheet type secondary cell so as to allow the first measurement part to change to another of the plurality of measurement parts; a collective output unit that collectively outputs measurement results and evaluation results at the plurality of the measurement parts for display or print-out as a greyscale image of the secondary cell whose greyscale values are indicative of normality or abnormality for each of the plurality of measurement parts, wherein the electrode probe is configured to be brought into contact with the outer surface of one of the positive electrode and the negative electrode, and a fixed electric potential is applied to the entire electrode of the other of the positive electrode and the negative electrode, wherein the charge source supplies charging power to the to the first measuring part via the electrode probe, and the measurement evaluation unit is configured to detect a charge characteristic from a change in a measurement voltage of a voltage meter contained therein as the sheet type secondary cell is charged from a non-charged state to a fully charge state, so as to evaluate the charging and/or discharging characteristic of the sheet type secondary cell, wherein the sheet type secondary cell is divided into said plurality of measurement parts, each having a same size and configuration, wherein the first measurement part is changed to another of the plurality of measurement parts by said relative movement mechanism, and the electric characteristic value is measured at each of the plurality of measurement parts so as to make an evaluation, and wherein measurement results and evaluation results at each of the plurality of the measurement parts are output collectively by the collective output unit for display or print-out. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification