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Method and device for utilizing surplus energy

A technology of residual energy and energy storage equipment, applied in the field of residual energy utilization methods and devices, can solve problems such as low efficiency and potential safety hazards, and achieve the effects of avoiding excessive temperature, wide application range, and low cost

Inactive Publication Date: 2018-12-18
SICHUAN ENERGY INTERNET RES INST TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

It can be understood that in order to realize the utilization of the remaining electric energy of the waste lithium battery, the remaining electricity in the battery must first be discharged, but most of the existing discharge technologies are inefficient and have potential safety hazards

Method used

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  • Method and device for utilizing surplus energy
  • Method and device for utilizing surplus energy

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Embodiment Construction

[0037] After investigation, the inventor found that the current methods of discharging waste lithium batteries mostly use aqueous solution containing salt as the discharge medium to perform slow discharge, but the discharge rate of this method is slow, which affects production efficiency. During the discharge process, the electrolyte solution of the waste lithium battery may seep out. The lithium hexafluorophosphate in the electrolyte solution will produce harmful gases such as hydrogen fluoride when it meets water, which poses a safety hazard. The pollution of the electrolyte solution makes it difficult to recycle the discharged saline solution. Processing poses difficulties. In the process of industrialized production, a large amount of heat energy will be generated when the waste battery is discharged, which will increase the temperature of the workshop. The high temperature season will bring hidden dangers to safe production and cause high temperature damage to employees. ...

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Abstract

The embodiment of the invention relates to the technical field of waste battery treatment, in particular to a method and a device for utilizing surplus energy. The method for utilizing surplus energyis applied to a detection platform, the detection platform is respectively electrically connected with an energy storage device and a plurality of waste battery packs, the waste battery packs are serially connected to form a discharge battery module, each waste battery pack is electrically connected with the energy storage device, and the method comprises the following steps: judging whether the voltage of the obtained discharge battery module is larger than the voltage of the obtained energy storage device; if so, controlling the discharge battery module to start discharging; judging whetherthe real-time voltage of the collected discharge battery module is smaller than the voltage of the energy storage device during discharging; and if so, controlling the discharge battery module to stopdischarging. By adoption of the method and device for utilizing surplus energy, the residual energy of the waste battery pack can be efficiently and safely recovered.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of waste battery treatment, in particular, to a method and device for utilizing residual energy. Background technique [0002] Facing the increasingly severe energy crisis and environmental problems, it has become an inevitable trend for the development of human society to replace traditional vehicles with new energy electric vehicles. With the application of lithium-ion batteries in electric vehicles, the lithium-ion battery industry has developed extremely rapidly. More and more lithium-ion power plants have been established, and the demand for lithium-ion batteries has also increased. The huge power battery market will be accompanied by a big explosion in the lithium battery recycling industry. The development of the lithium battery recycling industry can also avoid resource waste and environmental pollution, and will also generate considerable economic benefits and investment o...

Claims

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Application Information

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IPC IPC(8): H01M10/44H01M10/54
CPCH01M10/441H01M10/448H01M10/54Y02E60/10Y02W30/84
Inventor 殷娟娟李敬刘毅
Owner SICHUAN ENERGY INTERNET RES INST TSINGHUA UNIV
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