Battery Management System with Integration of Voltage Sensor and Charge Equalizer
First Claim
1. A battery management system, comprising:
- a battery module including a plurality of batteries connected in series;
a switch module connected in parallel to the battery module;
a voltage sensor which measures a voltage of each battery included in the battery module;
a charge equalizer causing each battery included in the battery module to be charged, discharged or charged/discharged; and
a microprocessor controlling the switch module to determine whether to charge or discharge each battery included in the battery module according to the voltage values measured by the voltage sensor,wherein the voltage sensor and the charge equalizer are connected in parallel to each battery included in the battery module by the same switch module.
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Abstract
A battery management system according to the present invention comprises a battery module consisted of a plurality of batteries connected in series; a switch module connected in parallel to the battery module; a voltage sensor measuring a voltage of each battery composing the battery module; a charge equalizer causing each battery composing the battery module to be charged, discharged or charged/discharged; and a microprocessor controlling the switch module to determine whether to charge or discharge each battery composing the battery module according to the voltage values measured by the voltage sensor and; wherein the voltage sensor and the charge equalizer are connected in parallel to each battery composing the battery module by the switch module.
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Citations
18 Claims
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1. A battery management system, comprising:
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a battery module including a plurality of batteries connected in series; a switch module connected in parallel to the battery module; a voltage sensor which measures a voltage of each battery included in the battery module; a charge equalizer causing each battery included in the battery module to be charged, discharged or charged/discharged; and a microprocessor controlling the switch module to determine whether to charge or discharge each battery included in the battery module according to the voltage values measured by the voltage sensor, wherein the voltage sensor and the charge equalizer are connected in parallel to each battery included in the battery module by the same switch module. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A battery management method for a battery management system comprising a battery module including a plurality of batteries connected in series;
- a switch module connected in parallel to the battery module;
a voltage sensor measuring a voltage of each battery included in the battery module;
a charge equalizer causing each battery to be charged, discharged or charged/discharged; and
a microprocessor controlling the switch module, comprising the steps of;(a) inputting a voltage value of each battery to the microprocessor by connecting the battery to the voltage sensor using the switch module for a prescribed time, for each battery included in the battery module; and (b) connecting the charge equalizer to a single battery which is selected to be charged or discharged based on the voltage values inputted to the microprocessor using the switch module to charge or discharge the single battery. - View Dependent Claims (13, 14, 15, 16, 17, 18)
- a switch module connected in parallel to the battery module;
Specification