Individual cell voltage detection circuit for charge and discharge control in a battery pack
Assignee02Micro, Inc.
InventorGuoxing LI
Life of this patent
Estimating the term…
Abstract
A battery management system for a battery pack comprises a battery module and a controller. The controller comprises a voltage detection and control circuit, wherein the controller comprises a voltage to current converter. A cell voltage is converted to current and produces a voltage detected at an input to one or more logic devices. The level of voltage detected is dependent upon the current output of the voltage to current converter and a threshold current. The output of the one or more logic devices is received by a controller, and the controller is operable to control the charging and discharging of the battery cell based on the logic device output.
Claims24
A battery management system for a battery pack comprising:
- a battery module;
- a controller coupled to the one or more battery modules, the controller comprising:
- a voltage to current converter, and
- one or more logic devices, wherein a voltage output of the battery module is converted to current by the voltage to current converter and a voltage input to the one or more logic devices is dependent upon the current output of the voltage to current converter and a threshold current, and wherein the controller is operable to control at least one of the charging and discharging of the battery module based upon an output of the one or more logic devices.
A process for controlling a battery pack, comprising:
- converting a voltage output of a battery module to a current;
- comparing the converted current to a threshold current;
- performing a logical function on an input signal, wherein the input signal is dependent upon the comparison of the converted current and the threshold current;
- controlling at least one of a charging and discharging of the battery pack, wherein the controlling is based upon an output of the logical function.
A non-transitory computer readable media comprising computer-executable instructions stored therein for controlling a battery pack, the computer-executable instructions comprising:
- instructions to convert a voltage output of a battery module to a current;
- instructions to compare the converted current to a threshold current;
- instructions to perform a logical function on an input signal, wherein the input signal is dependent upon the comparison of the converted current and the threshold current;
- instructions to control at least one of a charging and discharging of the battery pack, wherein the controlling is based upon an output of the logical function.
Dependencies are inferred from the claim text.