Changes for page 3.3 Control
Last modified by Admin on 2025/04/09 12:14
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... ... @@ -106,19 +106,26 @@ 106 106 107 107 Calculation of the resistance of cells is carried out in two ways. The first method is used when the battery passes from a relaxation state to a charge or discharge state, wherein the cell resistance value 108 108 109 -R = (U-U,,ocv,,) / I,,stable,,, 109 +{{formula fontSize="SMALL" imageType="PNG"}} 110 +R = \frac{U-U_{ocv}}{I_{stable}} 111 +{{/formula}} 110 110 113 +where U — the cell voltage measured in the charge or discharge state, V; U,,ocv,, — cell voltage measured in the state of relaxation (before switching to the state of charge or discharge); I,,stable,, — stabilized current through the cell in the state of charge or discharge. 111 111 112 -where U is the cell voltage measured in the charge or discharge state, V; U,,ocv,, is the cell voltage measured in the state of relaxation (before switching to the state of charge or discharge); I,,stable,, – stabilized current through the cell in the state of charge or discharge. 113 - 114 114 The second method is used for a stepwise change in the current through the cell, while the value of the cell resistance: 115 115 116 -R = (U,,2,,-U,,1,,) / (I,,stable2,,-I,,stable1,,) provided that | I,,stable2,,-I,,stable1,, | > 0.2 × Q,,max,, 117 +{{formula fontSize="SMALL"}} 118 +R = \frac{U_2-U_1}{I_{stable2}-I_{stable1}} 119 +{{/formula}} 117 117 118 - (Q,,max,,isthe maximum cell capacity),121 +provided that 119 119 120 -where U,,2,, is the voltage on the cell at the moment when the stabilized current I,,stable2,, is flowing through it; U,,1,, – the voltage on the cell at the moment when the stabilized current I,,stable1,, flowing through it. 123 +{{formula fontSize="SMALL"}} 124 +| I_{stable2}-I_{stable1} | > 0.2 × Qmax 125 +{{/formula}} 121 121 127 +where Q,,max,, — the maximum cell capacity,U,,2,, — voltage on the cell at the moment when the stabilized current I,,stable2,, is flowing through it; U,,1,, — the voltage on the cell at the moment when the stabilized current I,,stable1,, flowing through it. 128 + 122 122 The stabilized current I,,stable,, = I, if during the stabilization time the instantaneous current I is in the range from 0.95 × I to 1.05 × I. 123 123 124 124 To change parameters of the algorithm for calculating the cell resistance, select the "Control → Resistance estimation" section: