Self-correction method for remaining capacity estimation of lithium iron phosphate power battery
A power battery, lithium iron phosphate technology, applied in the measurement of electrical variables, measurement of electricity, measurement devices and other directions, can solve the problem of not having accumulated errors, a large number of calculations, and high accuracy of battery management systems, reducing errors, and being easy to apply and popularize Effect
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[0043] The method of the present invention will be further described below in conjunction with the accompanying drawings.
[0044] Such as Figure 5 The method of the present invention shown includes the following steps:
[0045] Step (1). Initialize the value of the actual remaining capacity SOC: take the rated capacity C of the lithium iron phosphate power battery as the reference value;
[0046] Step (2). The ampere-hour method is used to estimate the remaining capacity of the lithium iron phosphate power battery during the entire charge and discharge process, and the reference remaining capacity estimated by the ampere-hour method is recorded as SOC′;
[0047] Step (3). Perform charging and discharging tests on the lithium iron phosphate power battery at different temperatures to construct the relationship curve between the temperature and capacity of the lithium iron phosphate power battery. According to the temperature T detected by the lithium iron phosphate power battery at a ...
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