Invention Grant
- Patent Title: Sampling circuit, equalization circuit, and system for single cell in series battery pack
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Application No.: US16455714Application Date: 2019-06-27
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Publication No.: US11041911B2Publication Date: 2021-06-22
- Inventor: Denghai Pan , Zejie Lv , Yuanzhong Wu
- Applicant: Huawei Technologies Co., Ltd.
- Applicant Address: CN Shenzhen
- Assignee: Huawei Technologies Co., Ltd.
- Current Assignee: Huawei Technologies Co., Ltd.
- Current Assignee Address: CN Shenzhen
- Agency: Leydig, Voit & Mayer, Ltd.
- Priority: CN201611265992.6 20161231
- Main IPC: G01R31/3835
- IPC: G01R31/3835 ; G01R31/396 ; G01R31/36 ; H02J7/00 ; H01M10/42 ; H01M10/48 ; B60L58/22
Abstract:
In a sampling circuit, a single cell in a series battery pack is isolated from a voltage divider resistor in a bleeder circuit by using a first isolation sampling switch, so as to prevent a drain current of the single cell. In addition, sampling errors in sampling voltages collected by the sampling circuit may be offset during differential calculation.
Public/Granted literature
- US20190317153A1 SAMPLING CIRCUIT, EQUALIZATION CIRCUIT, AND SYSTEM FOR SINGLE CELL IN SERIES BATTERY PACK Public/Granted day:2019-10-17
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