Title:
VOLTAGE EQUALIZATION CIRCUIT, SERIES-CONNECTED BATTERY PACK, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/051888
Kind Code:
A1
Abstract:
A voltage equalization circuit (10), a series-connected battery pack (20), and an electronic device. The voltage equalization circuit (10) is applied to the series-connected battery pack (20), and the series-connected battery pack (20) comprises n batteries connected in series. The voltage equalization circuit (10) comprises: a voltage divider circuit (11). A first end (111) of the voltage divider circuit (11) is connected to the positive electrode of the series-connected battery pack (20), and a second end (112) of the voltage divider circuit is connected, via a resistor (12), to a positive electrode of an mth battery in the series-connected battery pack (20), where m is counted from the negative electrode of the series-connected battery pack. The negative electrode of the series-connected battery pack (20) is grounded. A voltage of the second end (112) of the voltage divider circuit (11) is m / n times a voltage of the first end (111) of the voltage divider circuit (11), wherein n is an integer greater than 1, and m is an integer greater than or equal to 1 and less than n. The voltage equalization circuit (10), the series-connected battery pack (20), and the electronic device have simple structures and low costs, thereby improving a utilization rate and extending a service life of the series-connected battery pack (20).
Inventors:
WANG HUI (CN)
Application Number:
PCT/CN2018/105755
Publication Date:
March 19, 2020
Filing Date:
September 14, 2018
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H02J7/00
Foreign References:
| CN1707903A | 2005-12-14 | |||
| US6806686B1 | 2004-10-19 | |||
| CN106300535A | 2017-01-04 | |||
| EP0575205A1 | 1993-12-22 | |||
| CN107516922A | 2017-12-26 |
Attorney, Agent or Firm:
LEADER PATENT & TRADEMARK FIRM (CN)
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