An energy transfer equalizing charging circuit and method
A technology of equalization charging and energy transfer, applied in battery circuit devices, secondary battery charging/discharging, circuit devices, etc., can solve problems such as poor, no equalization or equalization effect, etc., to increase robustness and improve equalization effect. Effect
Active Publication Date: 2017-01-04
ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD +2
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Problems solved by technology
[0005] The purpose of the present invention is to provide an energy transfer type equalizing charging circuit and method for the technical problem of no equalization or poor equalization effect when charging the existing series battery packs
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[0031] The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.
[0032] refer to figure 1 As shown, the present invention provides an energy transfer type balanced charging circuit, including a logic judgment and execution module 301, a relay network 302, a series battery pack 303, a DC / DC bidirectional constant current module 304 and a DC bus 305, the relay network 302 and the series connection The battery pack 303 is connected, the logical judgment and execution module 301 is connected to the relay network 302, and the relay network 302 is also connected to the DC bus 305 through the DC / DC bidirectional constant current module 304; The voltage of any battery, judge whether the voltage value is abnormal, and control the relay network 302 and the DC / DC bidirectional constant current module 304 to carry out balanced charging according ...
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The invention discloses an energy-transfer lossless equalizing charge circuit and a method. The circuit comprises a logical judgment and?execution module, a relay network, series-connected batteries, a DC / DC?bidirectional constant-current?module and a DC bus, wherein the relay network is connected with the series-connected batteries; the logical judgment and?execution module is connected with the relay network; and the relay network is also connected with the DC bus via the DC / DC?bidirectional constant-current?module. The logical judgment and?execution module acquires voltage of any battery in the series-connected batteries in real time, whether the voltage value is abnormal is judged, the relay network and the DC / DC?bidirectional constant-current?module are controlled to carry out lossless equalizing charge according to the judging result, and transition energy during the equalizing process is stored temporarily in the DC bus. According to the energy-transfer lossless equalizing charge circuit and the method, energy can taken from the DC bus to be outputted in a constant current way to a certain battery, energy can also be taken from constant current of the battery to be back to the DC bus, the whole circuit topology?adopts a modular design idea, the equalizing effect is improved, and robustness?of the system is enhanced.
Description
technical field [0001] The invention relates to the technical field of charge equalization of storage battery packs, and more specifically relates to an energy transfer type equalization charging circuit and method. Background technique [0002] In recent years, energy storage technology has developed rapidly, which can effectively respond to load fluctuations through rapid active / reactive power control, and ensure emergency power supply for key loads in the event of power supply system failure. At present, the power system composed of lead-acid batteries and UPS is widely used as an emergency power supply, but because the volume-to-energy ratio and weight-to-energy ratio of lead-acid batteries are too small, it is impossible to achieve "large-capacity and mobile", and smart batteries are not used. management system, resulting in shortened battery life. As the performance of lithium-ion batteries continues to improve, their energy density increases at a rate of 10%-15% per ...
Claims
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IPC IPC(8): H02J7/00H01M10/44
CPCY02E60/10
Inventor 杨艺云张阁林强陈显富肖静司传涛肖园园彭建华刘金铃
Owner ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD