Battery management system with wireless charging
A technology of battery management system and wireless charging, which is applied in battery circuit devices, current collectors, electric vehicles, etc., and can solve problems such as balance
Active Publication Date: 2015-04-08
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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- Application Information
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Problems solved by technology
[0009] The purpose of the present invention is to overcome the disadvantage that battery equalization must be carried out when the existing battery pack is fully charged, and to provide a battery management system with wireless charging function suitable for electric vehicles
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[0018] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0019] Such as figure 1 As shown, the battery management system of the present invention includes a battery pack, a master-slave control board and a charging coil. Each battery pack is composed of multiple battery strings connected in parallel. The master-slave control board includes a master control board and a slave control board, and the master control board is connected with the slave control board through a vehicle communication bus. Connect one end of the control board to the battery pack, and the other end of the control board to the charging coil. A battery pack, a slave control board and a set of charging coils constitute a battery pack, and the slave control board is responsible for estimating the capacity of the battery pack in the battery pack and opening and closing the charging coils. An electric vehicle can have n battery pack...
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Provided is a battery management system with wireless charging. A main and auxiliary control board of the battery management system is divided into main control boards and auxiliary control boards. One end of each main control board is connected with a battery pack, the other end of each auxiliary control board is connected with charging coils, one battery pack, one auxiliary control board and one group of charging coils form a battery package, and the auxiliary control boards are responsible for the estimation of the capacity of the battery packs and on-off of the charging coils in the battery package. The battery packs can be charged by the auxiliary control boards either in a wired mode or a wireless mode. A battery unit in each battery pack is connected with the charging coils which charge the battery packs through a rectifying circuit, and the auxiliary control boards control on-off of the coils through a switch. The charge states of the battery packs in a plurality of battery packages are transmitted to a vehicle control unit from the main control boards through an automobile communication bus. The auxiliary control boards are connected with each other through the automobile communication bus, the main control boards are in communication with the auxiliary control boards through the automobile communication bus, and the main control boards are in communication with the vehicle control unit through the automobile communication bus.
Description
technical field [0001] The invention relates to a battery management system, in particular to a battery management system with a wireless charging function. Background technique [0002] In occasions that require large-capacity electric energy storage and supply, such as energy storage power stations, electric vehicles, communication base stations, etc., single batteries are often used in series and connected in groups to obtain large voltage and current. The performance of batteries is complex, and the characteristics of different types of batteries vary greatly. Due to the imbalance between batteries, the overall capacity of the battery pack is often affected and its use is affected. The battery management system is designed to improve the performance of the battery pack and reduce its negative impact. [0003] The main functions of the battery management system (BMS) include: accurately estimating the state of charge (State of Charge, or SOC) of the power battery pack; ...
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IPC IPC(8): H02J7/00H02J7/02
Inventor 宋显锦刘国强夏慧张超张瑞华徐小宇梁玲
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI