A method for charging and discharging an energy storage battery
An energy storage battery, charging and discharging technology, applied in secondary battery charging/discharging, battery circuit device, secondary battery repair/maintenance, etc., can solve complex problems, achieve the effect of simplifying control and increasing available capacity
Active Publication Date: 2019-10-08
BEIJING JIAOTONG UNIV +1
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Problems solved by technology
Moreover, when charging the battery using the constant current-constant voltage charging method, it is also necessary to switch the control mode of the energy storage converter to switch from the constant current control mode to the constant voltage control mode, which is more complicated
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[0026] Embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art would recognize that the described embodiments can be modified in various ways or combinations thereof without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims. Also, in this specification, the drawings are not drawn to scale, and like reference numerals denote like parts.
[0027] Combine below Figure 1 to Figure 5 This embodiment will be described in detail.
[0028] figure 1 It is the circuit diagram of the connection between the energy storage converter and the grid in the present invention, such as figure 1 As shown, the energy storage converter 100 is composed of three groups of bridge arms connected in parallel with the first capacitor 110, connected to both ends of the energy storage battery 200, wherein th...
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The invention discloses an energy-storage battery charging / discharging method. An energy storage battery is charged / discharged by utilizing an energy storage current converter; in the charging / discharging process of the energy storage battery, a constant-power charging / discharging stage is carried out firstly, and then a stepped power reduction charging / discharging stage is carried out; a constant-power and stepped power reduction charging / discharging way is adopted, the energy storage current converter is controlled to enter into the stepped power reduction charging / discharging stage from the constant power charging / discharging stage according to the charged quantity of the energy storage battery. According to the method provided by the invention, the power is used as a single controlled variable, and the switching between a constant current control mode and a constant pressure control mode is not needed, so that the control of the energy storage current converter is simplified.
Description
technical field [0001] The invention relates to the technical field of battery charging and discharging, in particular to a method for charging and discharging an energy storage battery. Background technique [0002] The battery charging methods mainly include constant current charging, constant voltage charging and constant current-constant voltage charging. Constant current charging is to keep the entire charging current constant, and the speed is fast; constant voltage charging is that the battery current will decrease with the increase of battery terminal voltage during the charging process, and the speed is slow; constant current-constant voltage charging is the commonly used charging method at present. , the first stage is charged with a constant current, and when the voltage reaches a predetermined value, it is transferred to the second stage for constant voltage charging. At this time, the current gradually decreases. When the charging current drops to zero, the batt...
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IPC IPC(8): H01M10/44H02J7/00
CPCH01M10/44H02J7/00Y02E60/10
Inventor 梁建钢孟秋艳童亦斌
Owner BEIJING JIAOTONG UNIV