Characteristic tracking method and circuit for a battery module
First Claim
1. A characteristic tracking method for a battery module comprising at least one battery, comprising:
- providing a look-up table according to a primary characteristic of the battery;
detecting whether the battery satisfies a preset condition when the battery module is operated from a usage state to an idling state;
measuring a first voltage and a real capacity of the battery when the battery satisfies the preset condition;
utilizing the measured first voltage to located a table capacity of the battery from the look-up table; and
updating the look-up table according to the real capacity and the table capacity,wherein when the usage state is a discharge state, the look-up table is utilized to provide a charge cutoff point, which serves as a discharge based point such that discharge characteristics of the battery can be obtained from the look-up table, andwherein when the usage state is a charge state, the look-up table is utilized to provide a discharge cutoff point which serves as a charge based point such that charge characteristics of the battery can be obtained from the look-up table.
1 Assignment
0 Petitions
Accused Products
Abstract
A characteristic tracking method for a battery module including at least one battery is disclosed. A look-up table is provided according to a primary characteristic of the battery. It is determined whether a battery has satisfied a preset condition when the battery module is operated from a usage state to an idling state. The battery is measured to have obtained a first voltage and a real capacity when the battery satisfies the preset condition. The measured first voltage is utilized to locate a table capacity of the battery from the look-up table. The look-up table is updated according to the real capacity and the table capacity. A peripheral circuit of characteristic tracking method has been exhibited.
-
Citations
36 Claims
-
1. A characteristic tracking method for a battery module comprising at least one battery, comprising:
-
providing a look-up table according to a primary characteristic of the battery; detecting whether the battery satisfies a preset condition when the battery module is operated from a usage state to an idling state; measuring a first voltage and a real capacity of the battery when the battery satisfies the preset condition; utilizing the measured first voltage to located a table capacity of the battery from the look-up table; and updating the look-up table according to the real capacity and the table capacity, wherein when the usage state is a discharge state, the look-up table is utilized to provide a charge cutoff point, which serves as a discharge based point such that discharge characteristics of the battery can be obtained from the look-up table, and wherein when the usage state is a charge state, the look-up table is utilized to provide a discharge cutoff point which serves as a charge based point such that charge characteristics of the battery can be obtained from the look-up table. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. A characteristic tracking circuit for a battery module comprising at least one battery, comprising:
-
a current accumulation circuit obtaining a real capacity according to usage of the battery module; a voltage measurement circuit measuring the battery to obtain a first voltage; and a control circuit utilizing the measured first voltage to locate a table capacity from a look-up table, and updating the look-up table according to the real capacity and the table capacity, comprising; a determining module determining whether a preset condition has been satisfied, wherein when the preset condition has been satisfied, the determining module activates the voltage measurement circuit to measure a present open circuit voltage of the battery to serve as the measured first voltage, wherein the look-up table is utilized to provide a discharge cutoff point of the battery to serve as a charge based point and a charge characteristic of the battery is obtained according to the charge based point, and wherein the look-up table is utilized to provide a charge cutoff point of the battery to serve as a discharge based point and a discharge characteristic of the battery is obtained according to the discharge based point. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
-
Specification