A low-cost, ultra-long-life stepped buffer gradient power storage system
A power storage system and ultra-long life technology, which is applied in the direction of current collectors, electric vehicles, electrical components, etc., can solve problems such as short life, achieve the effects of improving life, prolonging the interval between charge and discharge cycles, and improving service life
Inactive Publication Date: 2016-01-06
HUNAN UNIV OF SCI & TECH
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Problems solved by technology
[0005] All in all, the current design method of the power storage system makes the cycle life of the power storage system directly depend on the life of the battery cells and cannot break through this limit, especially when faced with high-frequency charging and discharging requirements, the life is very short
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Embodiment Construction
[0027] The following will take the design of a certain type of solar lawn lamp prototype (CPD-NO.01) power storage system as an example to describe the application and implementation of this low-cost, ultra-long-life stepped buffer and gradual change power storage system in detail.
[0028] Such as figure 1 As shown, it is a general diagram of the basic principle of the design method of the low-cost, ultra-long-life step-buffer gradual change type power storage system. It can be seen from the figure that the present invention is composed of a plurality of single batteries of the same type (lithium batteries, lead-acid batteries, nickel-cadmium batteries, nickel-metal hydride batteries, etc.), and these single batteries are divided into several buffer storage areas and initial main storage areas. These buffer storage areas are activated one by one in a stepwise activation manner, that is, when the cycle life of the activated buffer storage area ends or the fault fails to work n...
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A low-cost, ultra-long-life step-by-step buffer storage system. Several buffer storage areas and initial main storage areas are set inside the storage system. These buffer storage areas are activated one by one in a stepwise activation manner. When the cycle life of the buffer storage area ends or fails to work normally, activate the next buffer storage area, and so on, until all the buffer storage areas are activated and put into use; the activated buffer storage area is used for high-frequency The secondary charge and discharge, the inactive buffer storage area and the initial main storage area constitute the main storage area, the input terminals of the activated buffer storage area and the main storage area are connected to the primary energy generation system in parallel, and the activated buffer storage area The output of the storage area is connected to the load, and the output of the main storage area is selectively connected to the load and the input of the activated buffer storage area. The invention will greatly improve the service life of the electric storage system, and compared with the electric storage system composed of similar storage batteries, the service life is increased by 2-4 times.
Description
technical field [0001] The invention relates to a low-cost, ultra-long-life power storage system, especially a power storage system that uses solar energy, wind power, etc. as primary energy input, and needs to meet the needs of high-frequency charging and discharging, low price, and long life. Background technique [0002] The power storage system composed of various batteries has a wide range of applications, and more and more occasions require the existence of power storage systems, such as solar photovoltaic applications, wind power generation, various vehicles, aerospace and so on. [0003] Different application fields have different performance requirements for power storage systems. For example, artificial satellites require high energy density and long life; in the field of solar lamps, high-frequency charging and discharging, long life, and low cost are required; in the field of wind power generation, solutions are required. High-frequency charging, long life, and l...
Claims
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IPC IPC(8): H02J7/00
Inventor 刘丽芳姜晴魏琳席海波虞叶东刘义春
Owner HUNAN UNIV OF SCI & TECH