Remaining electric quantity determination method and device, and uninterruptible power supply
A technology of remaining power and determination method, applied in the field of power supply, can solve problems such as low reliability, and achieve the effect of high reliability
Pending Publication Date: 2021-11-05
KEHUA DATA CO LTD +1
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[0004] The embodiment of the present invention provides a method, device and uninterruptible power supply for determining the remaining power to solve the problem of low reliability when determining the remaining power
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[0091] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
[0092] In order to make the purpose, technical solution and advantages of the present invention clearer, specific embodiments will be described below in conjunction with the accompanying drawings.
[0093] As described in the background art, at present, the standard voltage and power relationship curve built into the UPS device before leaving the factory is usually used to determine the remaining ...
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The invention provides a remaining power determination method and device, and an uninterruptible power supply. The method comprises the following steps of obtaining first test data and second test data of a target power supply; obtaining first difference data between the first test data and first standard voltage electric quantity relation data of the target power supply, and second difference data between the second test data and second standard voltage electric quantity relation data of the target power supply; according to the first preset current, the second preset current and the current discharge current of the target power supply, performing linear fitting on the first difference data and the second difference data to obtain third difference data corresponding to the current discharge current; combining the third difference data with third standard voltage and electric quantity relation data corresponding to the current discharge current to obtain target voltage and electric quantity relation data corresponding to the current discharge current; and according to the target voltage electric quantity relation data, determining target power supply residual electric quantity. The method is advantaged in that reliability of the remaining power determination method can be improved.
Description
technical field [0001] The invention relates to the technical field of power supplies, in particular to a method and device for determining remaining power and an uninterruptible power supply. Background technique [0002] With the approach of the era of carbon neutrality, countries around the world are paying more and more attention to new energy sources. Uninterruptible Power Supply (UPS) equipment, as an important underlying device in the field of new energy, is widely used in photovoltaic, wind power and hydropower fields. played a huge role. [0003] In order to ensure the normal operation of the UPS device, it is necessary to obtain the remaining power of its power module. At present, the remaining power of the UPS equipment is usually determined by using the standard voltage and power relationship curve built in the UPS equipment before leaving the factory. However, with the increase of the use time of UPS equipment, the battery of its power module is gradually agin...
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IPC IPC(8): G01R31/40
CPCG01R31/40
Inventor 陈海飞黄金林余鑫
Owner KEHUA DATA CO LTD