Storage battery pack string all-cell active monitoring equalization management and control system and control method
A battery pack and control system technology, applied in charge equalization circuits, electric vehicles, secondary batteries, etc., can solve problems such as potential safety hazards, inconsistencies in voltage and power, affecting the efficiency and utilization of battery strings, and achieve efficient operation , the effect of ensuring safety
Pending Publication Date: 2019-03-26
周锡卫
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Problems solved by technology
Due to the differences in the physical and chemical properties of each battery cell, and the difference in the environmental dimensions during installation and operation, the batteries in the battery string have inconsistencies in voltage and power, which affects the overall performance of the battery string. Efficiency and utilization also bring security risks
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[0025] As an implementation example, combining figure 1 A system and control method for active monitoring and balancing management and control of all cells in a battery string are described, however, the technology and solution of the present invention are not limited to the content given in this embodiment example.
[0026] like figure 1 As shown, the present invention proposes an active monitoring and balancing control system and control method for all cells in a battery string, which mainly includes: a first cell (1), a second cell (2), a third cell ( 3), the mth battery cell (m), the positive pole of the first battery cell (a11), the negative pole of the first battery cell (aa1), the positive pole of the second battery cell (a21), the negative pole of the second battery cell (aa2 ), the positive pole of the 3rd battery cell (a31), the negative pole of the 3rd battery cell (aa3), the positive pole of the mth battery cell (am1), the negative pole of the mth battery cell (aa...
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The invention belongs to the technical field of storage battery energy storage and particularly relates to a storage battery pack string all-cell active monitoring equalization management and controlsystem and control method. A storage battery cell whose electric quantity is higher than an average electric quantity is controlled to be connected to an input end through a DC/DC module, at the sametime, a storage battery cell whose electric quantity is lower than the average electric quantity is controlled to be connected to an output end, and the electric quantity in the storage battery cell whose electric quantity is higher than the average electric quantity is timely transferred to the storage battery cell whose electric quantity is lower than the average electric quantity to complete the active equalization. Any storage battery cell in a storage battery pack string is controlled to be connected to the input end or output end of the DC/DC module, and the two-way high-efficiency equalization. The active and effective equalization of the voltage and electric quantity consistency of each storage battery cell of the storage battery pack string is completed, a controlled storage battery cell with the need of equalization control is adjusted bidirectionally and arbitrarily, the efficient, fast and multiple-parallel equalization control is achieved, the safe, healthy and efficient operation of a storage battery energy storage system is ensured, and the invention has great positive significance for the application of the energy storage system.
Description
technical field [0001] The invention belongs to the technical field of battery energy storage, and in particular relates to an active monitoring and balancing control system and control method for all cells in a battery string. Background technique [0002] The battery energy storage system is an important part of electric vehicle new energy power, smart grid and energy Internet, especially the electrochemical energy storage system is a battery string composed of multiple unit battery cells connected to the converter equipment for charging and discharging , controlled to complete power regulation and charge and discharge. Due to the differences in the physical and chemical properties of each battery cell, and the difference in the environmental dimensions during installation and operation, the batteries in the battery string have inconsistencies in voltage and power, which affects the overall performance of the battery string. Efficiency and utilization also bring security ...
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IPC IPC(8): H02J7/00H01M10/42H01M10/46H01M10/48
CPCH01M10/4207H01M10/425H01M10/46H01M10/482H01M2010/4271H02J7/0018Y02E60/10
Inventor 周锡卫
Owner 周锡卫
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