Waste energy echelon utilization method of power battery for electric vehicle
A technology for power batteries and electric vehicles, applied in battery recycling, recycling technology, secondary battery repair/maintenance, etc., can solve the problem of lack of cascade utilization of surplus energy in power batteries, low operational feasibility, and difficulty Realization and other problems, to achieve the effect of avoiding electrolyte deterioration, simple repair method, and good performance consistency
Active Publication Date: 2013-06-05
GUANGDONG BRUNP RECYCLING TECH +1
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China Electric Power Research Institute's patent application CN201110410608.8 "A Grading Method for Cascade Utilization of Electric Vehicle Power Batteries" proposes a theoretical method for grading power batteries, which can guide the detection of physical and chemical properties of power batteries, but the actual The operation feasibility is relatively l
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Embodiment 1
[0071] (1) Dismantling: After discharge or under special conditions without discharge, the waste power battery pack obtained by recycling is dismantled without damage, and the screws on the battery pack are removed with a screwdriver, and the parts other than the battery cells are removed one by one. Use a knife to cut the position that cannot be disassembled with a screwdriver, disassemble the battery pack into a battery module, and then disassemble the battery module into a battery cell, and finally get several battery cells. Special conditions refer to the conditions in which protective measures such as isolating oxygen and lowering the temperature are implemented in the environment of the dismantling process to prevent unsafe phenomena such as combustion and explosion of the power battery. After dismantling, record the basic information of the battery cell, the rated voltage is 3.2V, and the nominal capacity is 60Ah.
[0072] (2) Screening before repair: First, check the a...
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The invention discloses a waste energy echelon utilization method of a power battery for an electric vehicle. The waste energy echelon utilization method of the power battery for the electric vehicle comprises the following steps: firstly, a waste power battery set is disassembled; secondly, performance detection is conducted on battery monomers without damaged appearance to screen out battery monomers capable of being directly used and ensure that a fifth step is accessed, the battery monomers capable of being repaired and reused are screened out, and processed in a third step, and unrepairable battery monomers are processed in a discarded mode; thirdly, the battery monomers capable of being repaired and reused are repaired; fourthly, performance detection is conducted on repaired battery monomers to screen out battery monomers with the difference of nominal voltage and virtual voltage not larger than 0.02V and the virtual capacity not lower than 70% of nominal capacity, the battery monomers with the difference of the nominal voltage and the virtual voltage not larger than 0.02V and the virtual capacity not lower than 70% of the nominal capacity are processed according to the next step, and the repaired battery monomers not capable of reaching the standards are processed in a discarded mode; and fifthly, a new power battery set is assembled. Because waste capacity of a monomer battery of the power battery is reasonably utilized, and is recombined to a new power battery applied to different occasions, the waste energy echelon utilization method of the power battery for the electric vehicle not only satisfies requirements of using occasions, but also utilizes performance of the power batteries.
Description
technical field [0001] The invention relates to a power battery recycling method, in particular to a step-by-step utilization method of residual energy of a power battery for an electric vehicle. Background technique [0002] The power battery refers to the power source that provides the power source for the tool. It has the characteristics of high energy, high power, high discharge rate, wide working temperature range and long service life. Electric vehicles use a power battery pack composed of multiple battery cells, which is composed of hundreds of power batteries with good electrical performance consistency. The power battery determines the performance of the electric vehicle. When the performance of the power battery pack drops to a certain level, in order to ensure the driving and safety needs of the electric vehicle, the power battery should be replaced in time. [0003] The cascade utilization of the remaining energy of the power battery refers to the application fi...
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Login to view more IPC IPC(8): H01M10/42H01M10/54
CPCY02E60/12Y02E60/10Y02W30/84
Inventor 欧彦楠李长东余海军
Owner GUANGDONG BRUNP RECYCLING TECH
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