BATTERY PACK AND CONTROL METHOD THEREFOR
First Claim
1. A battery pack comprising:
- one or a plurality of cell blocks in which one or a plurality of secondary battery cells are connected in series and/or in parallel; and
a control section for measuring a voltage of the one or the plurality of cell blocks to detect an abnormality of a cell block on the basis of a measurement result,wherein the control sectioncalculates a time differential of the voltage for the one or the plurality of cell blocks on the basis of the measured voltage;
extracts a first time differential which is maximum and a second time differential which is minimum from the time differentials of the voltage for the one or the plurality of cell blocks; and
determines that a cell block corresponding to the second time differential is abnormal in a case where a difference between the first time differential and the second time differential is less than a prescribed value.
3 Assignments
0 Petitions
Accused Products
Abstract
A battery pack includes one or more cell blocks in which one or more secondary battery cells are connected in series and/or in parallel, and a control section for measuring a voltage of the one or more cell blocks to detect an abnormality of a cell block on the basis of a measurement result. The control section calculates a time differential of the voltage for the one or more cell blocks on the basis of the measured voltage, extracts a first time differential which is maximum and a second time differential which is minimum from the time differentials of the voltage for the one or more cell blocks, and determines that a cell block corresponding to the second time differential is abnormal in a case where a difference between the first time differential and the second time differential is less than a prescribed value.
-
Citations
4 Claims
-
1. A battery pack comprising:
-
one or a plurality of cell blocks in which one or a plurality of secondary battery cells are connected in series and/or in parallel; and a control section for measuring a voltage of the one or the plurality of cell blocks to detect an abnormality of a cell block on the basis of a measurement result, wherein the control section calculates a time differential of the voltage for the one or the plurality of cell blocks on the basis of the measured voltage; extracts a first time differential which is maximum and a second time differential which is minimum from the time differentials of the voltage for the one or the plurality of cell blocks; and determines that a cell block corresponding to the second time differential is abnormal in a case where a difference between the first time differential and the second time differential is less than a prescribed value. - View Dependent Claims (2, 3)
-
-
4. A control method for a battery pack, comprising the steps of:
-
measuring a voltage of one or a plurality of cell blocks in which one or a plurality of secondary battery cells are connected in series and/or in parallel; calculating a time differential of the voltage for the one or the plurality of cell blocks on the basis of the measured voltage; extracting a first time differential which is maximum and a second time differential which is minimum from the time differentials of the voltage for the one or the plurality of cell blocks; and determining that a cell block corresponding to the second time differential is abnormal in a case where a difference between the first time differential and the second time differential is less than a prescribed value.
-
Specification