Environment-friendly safe discharging method for waste lithium ion battery
A lithium-ion battery, green and environmental protection technology, applied in secondary battery charging/discharging, secondary battery repair/maintenance, recycling by waste collectors, etc. And wet recovery is difficult, the discharge effect cannot be guaranteed and other problems, to avoid unsafe hidden dangers, improve the discharge effect, and reduce the cost.
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Embodiment 1
[0036] S1 put 2kg of discarded lithium-ion batteries of model 18650 into a tray with a diameter of 10mm randomly, open the upper port of the cavity, put the tray into the cavity, and fix it on the vibration press chassis, add a particle size of 1 Discharge particles with different sizes of ~3mm, the discharge particles are made of flake graphite, polyurethane and copper powder in a ratio of 0.5:0.1:0.5 using a granulator to form spherical and polyhedral shapes, and the volume ratio of waste lithium-ion batteries to discharge particles is 1:3 .
[0037] S2 Turn on the vibration pressurizer, and gradually pressurize the waste lithium-ion batteries and discharge particles in the tray while vibrating. When the pressure reaches 5000pa, circulating cold water is introduced into the periphery of the cavity, so that the temperature in the cavity is 20 °C, and the static After standing for 2 hours, release the pressure, withdraw the vibration pressurizing device chassis, so that the di...
Embodiment 2
[0040] S1 put 10kg of 50Ah square aluminum shell batteries randomly into a tray with a diameter of 15mm, open the upper port of the cavity, put the tray into the cavity, and fix it on the chassis of the vibrating press, add a particle size of 5~ Discharge particles with different sizes of 8mm. The discharge particles are made of cryptocrystalline graphite, polystyrene and iron powder in a ratio of 0.1:0.01:0.1 using a granulator to form spherical and polyhedral shapes. The volume ratio of waste lithium-ion batteries to discharge particles is 1:5.
[0041] S2 turns on the vibrating pressurizer, and gradually pressurizes the waste lithium-ion batteries and discharge particles in the tray while vibrating. When the pressure reaches 10000pa, circulating cold water is introduced into the periphery of the cavity, so that the temperature in the cavity is 10 °C, and the static After standing for 10 hours, release the pressure, withdraw the chassis of the vibration pressurizing device, ...
Embodiment 3
[0044] Put 15kg of 100Ah square aluminum shell batteries randomly into a tray with a diameter of 15mm, open the upper port of the cavity, put the tray into the cavity, and fix it on the vibration press chassis, add a particle size of 8-10mm Discharge particles of different sizes are made of flake graphite, cryptocrystalline graphite, phenolic resin, epoxy resin and aluminum powder in a ratio of 0.5:0.48:0.1:0.2:0.98 using a granulator to form spherical and polyhedral shapes, waste lithium The volume ratio of ion batteries to discharge particles is 1:4.
[0045] S2 turns on the vibrating pressurizer to gradually pressurize the waste lithium-ion batteries and discharge particles in the tray while vibrating. When the pressure reaches 20000pa, circulating cold water is introduced into the periphery of the cavity, so that the temperature in the cavity is 5°C. After standing for 20 hours, release the pressure, withdraw the chassis of the vibration pressurizing device, so that the di...
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