Battery pack parallel operation control method and associated device
A control method and technology of battery packs, which are applied to battery circuit devices, circuit devices, collectors, etc., can solve the problems of battery pack voltage and charge state differences, affect battery pack service life, and discharge current unevenness, etc., to avoid The effects of charging and discharging, prolonging the service life and reducing power loss
Inactive Publication Date: 2020-02-11
HAINING YUNENG ELECTRONICS CO LTD
View PDF3 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The design of the energy storage system needs to consider the needs of system capacity expansion. At this time, multiple battery packs need to be connected in parallel. Since the parallel connection of battery packs is a parallel connection of high current, the difference in the internal resistance of the cable and the internal resistance of the contact cannot be ignored. The difference in internal resistance and contact internal resistance will make the discharge current of each battery pack uneven during use, and the uneven discharge current will cause the voltage of the battery pack to differ from the state of charge after the battery pack stops discharging, and there will be a high voltage. Possibility of the battery pack charging to the battery pack with low voltage, which will lead to the loss of power of the battery pack and affect the service life of the battery pack
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0037] The core of this application is to provide a control method for parallel operation of battery packs, which can effectively avoid charging and discharging between battery packs, reduce the power consumption of battery packs, and prolong the service life of battery packs; another core of this application is to provide a The control device, equipment and computer-readable storage medium for battery packs working in parallel all have the above-mentioned technical effects.
[0038] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The present application discloses a battery pack parallel operation control method, which includes acquiring, after a power converter enable instruction is received, the battery parameters of variousbattery packs, and determining a power relationship of the respective battery packs based on the battery parameters; turning on an output switch corresponding to the battery pack with the largest power in order to switch in the battery pack with the largest power; when the power of the switched-in battery pack decreases to be equal to or less than that of the battery pack to be switched in, turning on an output switch corresponding to the battery pack to be switched in in order to switch in the battery pack to be switched in; after a power converter disenable instruction is received, turning off the output switches corresponding to the respective switched-in battery packs. The control method can effectively avoid charging and discharging between the battery packs, reduce the power loss ofthe battery packs, and extend the service lives of the battery packs. The present application also discloses a battery pack parallel operation control device and apparatus, and a computer-readable storage medium, all of which have the above technical effects.
Description
technical field [0001] The present application relates to the field of energy storage technology, and in particular to a control method for parallel operation of battery packs; and also relates to a control device, equipment and computer-readable storage medium for parallel operation of battery packs. Background technique [0002] An energy storage system includes a power converter, an energy manager, a battery management system, and a battery pack (composed of cells connected in series). Among them, the power converter is used to complete the inverter function of DA-AC and the charging function of AC-DC, the energy manager is mainly used to complete the control function of the energy storage system, and the battery management system is mainly used to manage each battery pack. The design of the energy storage system needs to consider the needs of system capacity expansion. At this time, multiple battery packs need to be connected in parallel. Since the parallel connection of...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCH02J7/0063
Inventor 罗宇浩周懂明周宇峰
Owner HAINING YUNENG ELECTRONICS CO LTD