Lithium battery ohmic resistance test method based on double-pulse current
A technology of pulse current and ohmic internal resistance, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve problems such as long-term and inability to eliminate polarization resistance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0088] Example 1
[0089] Take the lithium iron phosphate battery as an example, place the lithium iron phosphate battery in a constant temperature environment of 25℃, (such as figure 1 ) The specific process of measuring the ohmic resistance at 95% and 90% state of charge is as follows:
[0090] (1) Place the lithium iron phosphate battery in a constant temperature environment of 25°C, and the standing time is not less than 1 hour;
[0091] (2) Charge the lithium iron phosphate battery at a constant current with a standard current of 0.5C, stop charging when the battery's highest voltage reaches 3.7V, and let it stand for 1 hour;
[0092] (3) The lithium iron phosphate battery is discharged at a constant current with a standard current of 0.5 amplitude, and the discharge time is 6 minutes, and then it is allowed to stand for 1 hour;
[0093] (4) The lithium iron phosphate battery is instantaneously discharged with a pulse current of 1C in amplitude, and the discharge time is 100 mill...
Example Embodiment
[0103] Example 2
[0104] Taking the lithium iron phosphate battery as an example, the specific process of testing the ohmic resistance at 25°C and 35°C under the 95% charged state of the lithium iron phosphate battery is given as follows:
[0105] (1) Place the lithium iron phosphate battery in a constant temperature environment of 25°C, and the standing time is not less than 1 hour;
[0106] (2) Charge the lithium iron phosphate battery at a constant current with a standard current of 0.5C, stop charging when the battery's highest voltage reaches 3.7V, and let it stand for 1 hour;
[0107] (3) The lithium iron phosphate battery is discharged at a constant current with a standard current of 0.5 amplitude, and the discharge time is 6 minutes, and then it is allowed to stand for 1 hour;
[0108] (4) The lithium iron phosphate battery is instantaneously discharged with a pulse current of 1C in amplitude, and the discharge time is 100 milliseconds, and the pulse current with an amplitude o...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap