Title:
SYSTEM FOR FORMING AND TESTING BATTERIES IN PARALLEL AND IN SERIES
Document Type and Number:
WIPO Patent Application WO/2021/113161
Kind Code:
A3
Abstract:
A circuit assembly for forming and testing batteries connected in parallel and in series includes a parallel test management device (PTMD) that connects to each battery and includes a main relay and a current transducer in series and an auxiliary relay in series with a current limiting resistor, which are parallel to the main relay. Parallel battery groups are formed by connecting multiple PTMD-battery combinations and a voltage equalizer in parallel. Multiple parallel battery groups are connected in series. This smart battery tray replaces a bulky, complicated engagement system and reduces the requirement for BTS channels and cables substantially. An aging rack monitors battery voltage on the smart battery tray. The equalizers and BTS pass current through the batteries simultaneously. The current through batteries and the voltage drop across the current transducer are about zero at the end of charge and discharge.
Inventors:
ZHANG CHAOJIONG (US)
Application Number:
PCT/US2020/062548
Publication Date:
September 16, 2021
Filing Date:
November 30, 2020
Export Citation:
Assignee:
ZHANG CHAOJIONG (US)
International Classes:
G06F1/26; G01R31/36; H01M10/44; H02J1/10; H02J7/34
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Attorney, Agent or Firm:
HODGSON, Stephen, S. (US)
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