BATTERY APPARATUS FOR CONTROLLING PLURAL BATTERIES AND CONTROL METHOD OF PLURAL BATTERIES
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Accused Products
Abstract
Lower order control devices control plural battery cells configuring plural battery modules. An input terminal of the low order control device in the highest potential, an output terminal of the low order control device in the lowest potential, and a high order control device are connected by isolating units, photocouplers. Diodes which prevent a discharge current of the battery cells in the battery modules are disposed between the output terminal of the low order control device and the battery cells in the battery module on the low potential side. Terminals related to input/output of a signal are electrically connected without isolating among the plural low order control devices.
51 Citations
17 Claims
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1-10. -10. (canceled)
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11. A battery apparatus comprising:
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a plurality of battery modules each having a plurality of battery cells, said plurality of battery modules being connected in series; and a plurality of first control devices, connected in series by signal lines in an electrically non-isolated state, to receive a command signal and detect a status of the plurality of battery cells; and wherein the serially connected first control devices are connected to a second control device which sends the command signal through a signal line which is isolated electrically by an isolator. - View Dependent Claims (17)
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12. A battery apparatus comprising:
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a plurality of battery modules each having a plurality of battery cells, said plurality of battery modules being connected in series; and a plurality of first control devices, corresponding to the plurality of battery modules, said first control devices being connected in series in an electrically non-isolated state and said first control devices being arranged to receive a command signal from a second control device through a circuit device, said circuit device being arranged such that the first control devices are maintained at a first voltage and the second control device is maintained at a second voltage smaller than the first voltage, and wherein the first control devices detect a status of the plurality of battery cells which are included in a corresponding battery module, and wherein the plurality of first control devices are integrated circuits having input and output signal circuits, and wherein said input signal circuit of one of the first control devices and output signal circuit of another of the first control devices have different reference potentials. - View Dependent Claims (16)
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13. A battery apparatus comprising:
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a first circuit region having a plurality of battery modules each having a plurality of battery cells, said plurality of battery modules being connected in series, and a plurality of first control devices connected in series in an electrically non-isolated state in said first circuit region, corresponding to the plurality of battery modules, to receive a command signal and detect a status of the plurality of battery cells which are included in a corresponding battery module; and a second circuit region having a second control device for outputting the command signal to the first circuit region, and wherein the first and second regions have different reference potentials, and wherein the apparatus has a device for connecting the first and second regions, and for maintaining the different reference potentials of the first and second circuit regions. - View Dependent Claims (15)
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14. A battery apparatus comprising:
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a plurality of battery modules each having a plurality of battery cells, said plurality of battery modules being connected in series; and a plurality of first control devices, at least some of which are connected in series by signal lines in an electrically non-isolated state, to receive a command signal and detect a status of the plurality of battery cells; and wherein the serially connected first control devices are connected to a second control device which sends the command signal through a signal line which is isolated electrically by an isolator.
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Specification