Apparatus and method for detecting battery pack voltage
First Claim
1. A voltage detection apparatus for a battery pack, the battery pack having a plurality of battery blocks, each battery block including a plurality of cells connected in series, each cell having a positive electrode and a negative electrode, the voltage detection apparatus comprising:
- a plurality of selectors, each selector being coupled to one of the plurality of battery blocks for determining a predetermined cell, each selector including a switch box and a switch controller, the switch controller being capable of receiving at least one voltage signal from the coupled battery block and controlling a status of the switch box;
a detector buffer coupled to the plurality of selectors for receiving a cell voltage of the predetermined cell and supplying an intermediate voltage, the detector buffer having an inverting terminal and a non-inverting terminal; and
a data process circuit coupled to the detector buffer for processing the intermediate voltage to acquire a voltage value indicative of the cell voltage of the predetermined cell.
2 Assignments
0 Petitions
Accused Products
Abstract
An apparatus and method for detecting battery pack voltage is disclosed. The voltage detection apparatus includes a plurality of selectors for providing a cell voltage of a predetermined cell, a detector buffer for receiving the cell voltage of the predetermined cell and supplying an intermediate voltage, a data process circuit for processing the intermediate voltage to acquire a voltage value indicative of the cell voltage of the predetermined cell, wherein each selector includes a plurality of switches and a plurality of level shifters, each switch being controlled by one of the plurality of level shifters to operate with a safe gate-source voltage, source-bulk voltage and reverse-biased body diode.
-
Citations
22 Claims
-
1. A voltage detection apparatus for a battery pack, the battery pack having a plurality of battery blocks, each battery block including a plurality of cells connected in series, each cell having a positive electrode and a negative electrode, the voltage detection apparatus comprising:
-
a plurality of selectors, each selector being coupled to one of the plurality of battery blocks for determining a predetermined cell, each selector including a switch box and a switch controller, the switch controller being capable of receiving at least one voltage signal from the coupled battery block and controlling a status of the switch box; a detector buffer coupled to the plurality of selectors for receiving a cell voltage of the predetermined cell and supplying an intermediate voltage, the detector buffer having an inverting terminal and a non-inverting terminal; and a data process circuit coupled to the detector buffer for processing the intermediate voltage to acquire a voltage value indicative of the cell voltage of the predetermined cell. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A method for detecting a voltage of each cell in a battery pack, the battery pack having a plurality of cells connected in series, comprising the steps of:
-
predetermining a cell to be detected in response to a selection signal; receiving at least one voltage signal from the battery pack; generating a plurality of control signals according to the selection signal and the at least one voltage signal; selecting the predetermined cell under control of the plurality of control signals, the predetermined cell having a cell voltage; acquiring an intermediate voltage based on the cell voltage of the predetermined cell; and acquiring a voltage value indicative of the cell voltage of the predetermined cell according to the intermediate voltage. - View Dependent Claims (14, 15, 16, 17, 18)
-
-
19. An electronic system, comprising:
-
a battery pack having a plurality of cells connected in series, the plurality of battery cells being divided into a plurality of battery blocks; an electronic equipment attached to and powered up by the battery pack; a digital device capable of predetermining a cell from the plurality of cells and providing selection signals; and a voltage detection apparatus coupled to the digital device for receiving the selection signals and coupled to the battery pack for selecting the predetermined cell according to the selection signals and detecting a voltage of the predetermined cell, the voltage detection apparatus including a plurality of switch boxes and a plurality of switch controllers, each switch box being coupled to one of the plurality of battery blocks, and each switch controller being coupled to one of the plurality of battery blocks for receiving voltage signals and to one of the plurality of switch boxes for supplying control signals. - View Dependent Claims (20, 21, 22)
-
Specification