Battery state diagnostic apparatus for battery set and battery module charger/discharger
First Claim
1. A diagnostic apparatus for diagnosing a state of charge of a battery set including a plurality of battery modules each having a plurality of cells, comprising:
- a no-load voltage calculating section for calculating no-load voltage of the cell;
a first judging section for determining whether a state of charge of each of the cells is normal or abnormal based on the no-load voltage of the cell calculated by the no-load voltage calculating section; and
a second judging section for determining that a battery module including a cell judged to be abnormal by the first judging section is an abnormal battery module which is required to be replaced.
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Accused Products
Abstract
A diagnostic apparatus for determining a battery charge status of a battery set, includes a no-load voltage calculating section for detecting no-load voltage VCn of cells; a first judging section for determining whether a battery state of each of the cells C is normal or abnormal based on the cell no-load voltage VCn calculated by the no-load voltage calculating section; and a second judging section for determining that a battery module including the cell determined to be abnormal by the first judging section is an abnormal battery module which is necessary to be exchanged. Further, the battery state diagnostic apparatus may also include a third judging section for determining a battery set is an abnormal battery set which is necessary to be exchanged when the number of battery modules determined to be abnormal is equal to or greater than a predetermined number, and calculating section for calculating the average voltage value of a plurality of battery modules determined to be normal based on the cell no-load voltage VCn.
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Citations
12 Claims
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1. A diagnostic apparatus for diagnosing a state of charge of a battery set including a plurality of battery modules each having a plurality of cells, comprising:
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a no-load voltage calculating section for calculating no-load voltage of the cell; a first judging section for determining whether a state of charge of each of the cells is normal or abnormal based on the no-load voltage of the cell calculated by the no-load voltage calculating section; and a second judging section for determining that a battery module including a cell judged to be abnormal by the first judging section is an abnormal battery module which is required to be replaced. - View Dependent Claims (2, 3)
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4. An electric car provided with a battery set including a plurality of battery modules having a plurality of cells, the electric car comprising a diagnostic apparatus for diagnosing battery charge status comprising:
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a no-load voltage calculating section for calculating no-load voltage of the cell; a first judging section for determining whether a state of charge of each of the cells is normal or abnormal based on the no-load voltage of the cell calculated by the no-load voltage calculating section; and a second judging section for determining that a battery module including a cell judged to be abnormal by the first judging section is an abnormal battery which requires replacement.
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5. A module charger/discharger for adjusting a voltage of a replacement battery module which is used to replace an abnormal battery module in a battery set including a plurality of battery modules having a plurality of cells, the module charger/discharger comprising:
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an average voltage calculating section for calculating the average voltage value of a plurality of battery modules judged to be normal by a battery diagnostic apparatus, wherein the replacement battery module is charged or discharged such that the voltage of the replacement battery module assumes the average voltage value calculated by the average voltage calculating section; the battery diagnostic apparatus comprising; a no-load voltage calculating section for calculating a no-load voltage of each of the cells; a first judging section for judging whether a state of charge of each of the cells is normal or abnormal based on the no-load voltage of the cell calculated by the no-load voltage calculating section; and a second judging section for judging that a battery module including a cell judged to be abnormal by the first judging section is an abnormal battery module which requires replacement.
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6. A module charger/discharger for adjusting a voltage of a replacement battery module which is used to replace an abnormal battery module of a battery set including a plurality of battery modules having a plurality of cells, wherein the replacement battery module is charged or discharged such that the voltage of the replacement battery module assumes the average voltage value calculated by a battery state diagnostic apparatus comprising:
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a no-load voltage calculating section for calculating no-load voltage of the cell; a first judging section for judging whether a battery state of each of the cells is normal or abnormal based on the no-load voltage of the cell calculated by the no-load voltage calculating section; and a second judging section for judging that a battery module including a cell judged to be abnormal by the first judging section is an abnormal battery module which requires replacement.
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7. A diagnostic apparatus for a battery set including a plurality of battery modules having a plurality of cells, comprising:
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an internal resistance calculating section for calculating internal resistance of each of the cells; a first judging section for judging whether a state of charge of each of the cells is normal or abnormal based on the internal resistance of the cells calculated by the internal resistance calculating section; and a second judging section for judging that a battery module including a cell determined to be abnormal by the first judging section is an abnormal battery module which requires replacement. - View Dependent Claims (8, 9)
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10. An electric car provided with a battery set including a plurality of battery modules each having a plurality of cells, the electric car comprising a diagnostic apparatus for diagnosing the state of the battery modules comprising:
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an internal resistance calculating section for calculating internal resistance of each of the cells; a first judging section for judging whether a state of charge of each of the cells is normal or abnormal based on the internal resistance of the cells calculated by the internal resistance calculating section; and a second judging section for judging that a battery module including a cell determined to be abnormal by the first judging section is an abnormal battery module which requires replacement.
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11. A module charger/discharger for adjusting a voltage of a replacement battery module which is used to replace an abnormal battery module in a battery set including a plurality of battery modules which each have a plurality of cells, the module charger/discharger comprising:
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an average voltage calculating section for calculating the average voltage value of a plurality of battery modules determined to be normal by a battery diagnostic apparatus, wherein the replacement battery module is charged or discharged such that the voltage of the replacement battery module assumes the average voltage value calculated by the average voltage calculating section; the battery diagnostic apparatus comprising; an internal resistance calculating section for calculating internal resistance of each of the cells; a first judging section for determining whether a state of charge of each of the cells is normal or abnormal based on the internal resistance of the cell calculated by the internal resistance calculating section; and a second judging section for judging that a battery module including a cell determined to be abnormal by the first judging section is an abnormal battery module which requires replacement.
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12. A module charger/discharger for adjusting a voltage of a replacement battery module which is used to replace an abnormal battery module of a battery set including a plurality of battery modules which each have a plurality of cells, wherein the replacement battery module is charged or discharged such that the voltage of the replacement battery module assumes an average voltage value calculated by a battery diagnostic apparatus comprising:
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an internal resistance calculating section for calculating internal resistance of each of the cells; a first judging section for judging whether a state of charge of each of the cells is normal or abnormal based on the internal resistance of the cell calculated by the internal resistance calculating section; and a second judging section for judging that a battery module including a cell judged to be abnormal by the first judging section is an abnormal battery module which requires replacement.
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Specification