Charging and discharging control system for battery pack
A technology for charge and discharge control and battery packs, applied in battery circuit devices, charge equalization circuits, battery parallel conversion, etc., can solve problems such as single connection mode of battery cells, unbalanced battery power, failure to detect and realize faulty battery isolation, etc.
Pending Publication Date: 2017-07-21
安徽康力节能电器科技有限公司
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Problems solved by technology
[0002] The existing battery charging system has a single connection mode for battery cells, which cannot meet the needs of fast charging and high-voltage discharge of the battery pack at the same time, and cannot isolate faulty batteries through the detection of battery parameters. In addition, when charging the battery pack, no When the charging time or the power provided by the charging system is limited, the problem of charging the battery. When the charging time or the power provided by the charging system is limited, it is impossible to fully charge each battery cell in the battery pack, and the charging of the battery cells is carried out randomly. Selecting or sequentially selecting the rechargeable battery units will easily cause the imbalance of battery power in the battery pack and reduce the battery life. If the battery is charged at a high temperature for a long time, it is easy to cause problems such as battery explosion.
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[0019] figure 1 Configuration diagram for the battery pack charge and discharge control system: figure 1 The intermediate charge and discharge control system includes a main switch 101, a rectifier 102, a DC-DC converter 103, a controller 104, a battery parallel charging switch 105 and a battery bypass switch 113 corresponding to the battery unit 109, and a battery parallel charging switch corresponding to the battery unit 110. 106 and battery bypass switch 114, battery parallel charging switch 107 and battery bypass switch 115 corresponding to battery unit 111, battery parallel charging switch 108 and battery bypass switch 116 corresponding to battery unit 112,
[0020] The battery power detection device, the battery temperature detection device and the DC-DC converter detection device, the AC input power supply is connected to one end of the main switch 101, the other end of the main switch 101 is connected to one end of the rectifier 102, and the other end of the rectifier ...
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The invention discloses a charging and discharging control system for a battery pack, and the system comprises a main switch, a rectifier, a DC-DC converter, a controller, a battery electric quantity detection device, a battery temperature detection device and a DC-DC converter detection device, a battery series connection discharging switch, a battery bypass switch, and a battery parallel connection charging switch. The system achieves the charging isolation of a battery with a fault through the battery parallel connection charging switch, achieves the discharging isolation of the battery with the fault through the battery bypass switch, improves the safety of the battery charging and discharging control system, gives full consideration to the charging demands of a large-capacity battery pack, employs the creative DC-DC converter, improves the quality of charging electric energy, prolongs the service life of the battery, selects the battery with the lower electric quantity for charging through the sorting of the electric quantities of the battery units in the battery packs, can improve the charging efficiency, and achieves the safe charging through setting a battery unit charging temperature threshold value.
Description
technical field [0001] The invention relates to a battery pack charge and discharge control system, in particular to a battery control system that can select and switch charge and discharge battery units according to the parameters of each battery unit in the battery pack. Background technique [0002] The battery unit in the existing battery charging system has a single connection method, which cannot meet the fast charging requirements and high-voltage discharge requirements of the battery pack at the same time, nor can it realize the isolation of faulty batteries through the detection of battery parameters. In addition, when charging the battery pack, it is not considered. When the charging time or the power provided by the charging system is limited, the problem of charging the battery, when the charging time or the power provided by the charging system is limited, it is impossible to make each battery cell in the battery pack fully charged, and the charging of the batter...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H02J7/00
CPCH02J7/0077H02J7/0091H02J7/0016H02J7/0024Y02E60/10
Inventor 李国红李中虎司红康刘自付郭本能周鹏
Owner 安徽康力节能电器科技有限公司