Method for quickly judging whether retired battery can be subjected to cascading utilization
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A step-by-step, fast technology, applied in the field of rapid judgment of whether decommissioned batteries can be used in steps, can solve problems such as the inability to realize fast regrouping and the inability to quickly judge the re-use of retired batteries, so as to save resources, judge accuracy, and reduce wasteful effect
Inactive Publication Date: 2018-09-28
桑顿新能源科技(长沙)有限公司
View PDF10 Cites 1 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
Although this method can achieve cascading utilization to a certain extent, it cannot quickly judge whether the decommissioned batteries can be reused in cascades, and at the same time cannot achieve rapid regrouping
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0025] In this example, 4 batteries (ternary) were subjected to 1C, 0.5C, 0.2C normal temperature cycles respectively, and the capacity and voltage drop within 30 minutes after charging at 0.5C constant current and constant voltage were recorded;
[0026] 1# cell: capacity 1C ≈Capacity 0.5C ≈Capacity 0.2C ; 30 minutes after 0.5C constant current and constant voltage charging, the voltage drop > 0.06V, discarded; dismantling found that the battery core was seriously decomposed of lithium, and the electrolyte was dry;
[0027] 2# cell: capacity 1C ≈Capacity 0.5C ≈Capacity 0.2C ;After charging at 0.5C constant current and constant voltage within 30 minutes, the voltage drop > 0.1V, discarded; after the cycle, the battery cell swelled significantly, dismantling found that the battery cell was seriously decomposed of lithium, the pole pieces turned dark red, and the electrolyte dried up;
[0028] 3# cell: capacity 1C 0.5C 0.2C ; After 0.5C constant current and constant voltag...
Embodiment 2
[0032] In this example, 4 batteries (lithium iron) were subjected to 1C, 0.5C, and 0.2C normal temperature cycles respectively, and the capacity and voltage drop within 30 minutes after charging at 0.5C constant current and constant voltage were recorded;
[0033] 1# cell: capacity 1C ≈Capacity 0.5C ≈Capacity 0 .2C; 0.5C constant-current constant-voltage charging within 30 minutes after the voltage drop > 0.2V, discarded; dismantling found serious lithium deposition in the battery cell, and the electrolyte dried up;
[0034] 2# cell: capacity 1C ≈Capacity 0.5C ≈Capacity 0.2C ; 30 minutes after 0.5C constant current and constant voltage charging, the voltage drop > 0.5V, discarded; after the cycle, the battery cell swelled significantly, dismantling found that the battery cell was seriously decomposed of lithium, the pole pieces turned dark red, and the electrolyte dried up;
[0035] 3# cell: capacity 1C 0.5C 0.2C ; After 0.5C constant current and constant voltage chargin...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
Abstract
The invention discloses a method for quickly judging whether a retired battery can be subjected to cascading utilization. The method includes the following steps: step S1, cycling a battery core to betested at a first multiplying rate for one period at normal temperature, and ensuring that the discharge capacity is a capacity 1; step S2, after standing at the normal temperature for a period of time, cycling the battery core at a second multiplying rate for one period, and ensuring that the discharge capacity is a capacity 2; step S3, after standing at the normal temperature for a period of time, cycling the battery core at a third multiplying rate for one period, and ensuring that the discharge capacity is a capacity 3, wherein the second multiplying rate is greater than the third multiplying rate and less than the first multiplying rate; and step S4, if judging that the capacity 1 is less than the capacity 2 and the capacity 2 is less than the capacity 3, determining that the batterycore is suitable for cascading utilization, and otherwise, determining that the battery core is not suitable for cascading utilization. According to the scheme of the invention, whether the retired battery with a normal appearance can be subjected to cascading utilization is judged through cyclic tests with three different multiplying rates, whether the battery can be subjected to cascading utilization can be quickly and efficiently judged without disassembling the battery, the operation is quick and convenient, the waste can be reduced, and resources can be saved.
Description
technical field [0001] The invention belongs to the field of battery recycling, in particular to a method for quickly judging whether decommissioned batteries can be used step by step. Background technique [0002] As the new energy market continues to boom, the number of electric vehicles in the market continues to increase, and the number of decommissioned power batteries is also growing explosively. The current mainstream technology for lithium battery cascade utilization is as follows: 1. Initially screen the batteries with a capacity lower than 80% according to their appearance, then test their capacity, internal resistance, and voltage, and eliminate cells with abnormal voltage and internal resistance, and conduct a test according to their capacity. 2. Disassemble and recycle batteries with abnormal appearance or low capacity, high internal resistance and low voltage. Although this method can achieve cascade utilization to a certain extent, it cannot quickly judge whe...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more