A detection method for the degree of powder stringing of single cells of thermal batteries
A single battery and detection method technology, which is applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problem of not being able to quantitatively reflect the degree of powder stringing between positive and negative electrodes, and achieve fast measurement speed, low cost, and measurement. accurate effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0051] like Figure 1 to Figure 6 As shown, the present invention is a method for detecting the degree of powder stringing of single cells of thermal batteries, including:
[0052] At room temperature, use a high input impedance voltmeter to measure the open circuit voltage V of the hot battery cell, and use an ohmmeter to measure the resistance R of the hot battery cell in constant voltage or constant current mode 3 , using an ammeter to measure the short-circuit current I of the hot battery cell 4 ;
[0053] According to the above measured open circuit voltage V, resistance R 3 and short-circuit current I 4 The value of any two parameters in the three parameters can be calculated to obtain the internal resistance R of the single cell of the thermal battery 1 , The leakage resistance R caused by string powder 2 ; and judge the degree of powder stringing of hot battery cells: when 02 4 Ω, the degree of powder accumulation is very serious, the battery may not be able to di...
Embodiment 2
[0065] Such as Figure 1 to Figure 6 As shown, the difference between this embodiment and Embodiment 1 is that this embodiment is based on the open-circuit voltage V and short-circuit current I of the thermal battery single cells 4 Two parameters, use the following formula to calculate the internal resistance R of the hot battery cell at room temperature 1 , The leakage resistance R caused by string powder 2 :
[0066] R 1 =U 0 / I 4 ,
[0067] R 2 =(U 0 / I 4 ) / (U 0 / V-1),
[0068] where U 0 It is the open-circuit electromotive force of the single cell of the hot battery at room temperature, which is determined by experiment.
[0069] During implementation: S10. Increase the thickness of the electrolyte to d, and prepare several single battery sheet samples A 1 、A 2 ,...,A m , so that it is possible to completely avoid the phenomenon of stringing powder between the positive and negative electrodes inside the cell, and use a blade to completely remove the stringin...
Embodiment 3
[0075] Such as Figure 1 to Figure 6 As shown, the difference between this embodiment and Embodiment 1 is that this embodiment is based on the open circuit voltage V of the hot battery cell and the resistance R measured in the constant voltage mode. 3 Two parameters, use the following formula to calculate the internal resistance R of the hot battery cell at room temperature 1 , The leakage resistance R caused by string powder 2 :
[0076] R 1 =R 3 × U 0 ×(1 / V-1 / U 10 ),
[0077] R 2 =R 3 ×(U 0 × U 10 -U 0 ×V) / (U 10 ×U 0 -U 10 ×V),
[0078] where U 10 is the driving voltage of the resistance meter in the constant voltage mode; U 0 It is the open-circuit electromotive force of the single cell of the hot battery at room temperature, which is determined by experiment.
[0079] During implementation: S10. Increase the thickness of the electrolyte to d, and prepare several single battery sheet samples A 1 、A 2 ,...,A m , so that it is possible to completely avoid...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More