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Home > News > Recycling

Researchers build robotic disassembly system for battery recycling

Source：Adsale Plastics Network Date ：2021-08-19 Editor ：JK

Researchers at the Department of Energy’s Oak Ridge National Laboratory (ORNL) of the U.S. have developed a robotic disassembly system for spent electric vehicle battery packs to safely and efficiently recycle and reuse critical materials while reducing toxic waste.

 

According to Tim McIntyre, principal investigator in ORNL’s Electrification and Energy Infrastructures Division, only a small percentage of lithium-ion vehicle batteries are recycled today, and the majority of the processes used to do so are not automated.

 

Whether a recycler simply wants to get through the outer housing to access batteries and replace worn components, or completely recycle battery stacks for recovery of cobalt, lithium, metal foils and other materials, the first step is battery diagnostics for safe and efficient handling and disassembly.


“With our system, when the robot picks up the battery pack and puts it on the production line, it marks the last time a human will touch it until it’s in pieces and parts,” introduced Tim McIntyre.


1_web.jpg

Researchers at Oak Ridge National Laboratory developed a robotic disassembly system for used electric vehicle batteries.


Limiting human interaction is important for both safety and efficiency. The robots swiftly remove bolts and other housing regardless of any remaining charge, whereas human operators must undertake an exacting, lengthy process to discharge used batteries before breaking them down manually.

 

Automated disassembly reduces human exposure to toxic chemicals found inside the batteries and high power levels that are approaching the 900-volt level in some newer vehicles.

 

The automated system, developed as part of DOE’s Critical Materials Institute, or CMI, can be easily reconfigured to any type of battery stack. It can be programmed to access just the individual battery modules for refurbishment or reuse as stationary energy storage, or the batteries can be taken apart down to the cell level for separation and materials recovery.

 

The work builds on expertise developed in previous ORNL projects for the CMI that focused on robotic disassembly of hard drives for recovery of rare-earth magnets. Engineers also proved that those magnets can be directly reused in electric motors.


2_web.jpg

The newly developed line aims to make battery recycling safer, faster.


“Automatic disassembly of components containing critical materials not only eliminates labor-intensive manual disassembly, but provides for an efficient process to separate the components into higher value streams where the critical materials are concentrated into individual feedstocks for recycle processing,” said CMI Director Tom Lograsso.

 

The researchers follow the same protocol each time: breaking down the used component manually and collecting data on that process to create the robotic tools and controls needed to drive an automated system, stated Jonathan Harter, ORNL project team member.

 

“Industry is not limited on the amount of batteries they can take into this process. There is a significant backlog already accumulated. The limiting factor is the time it takes to perform the electrical discharge and perform disassembly manually,” said Jonathan Harter. He estimated that in the time it takes in some processes to disassemble 12 battery stacks by hand, the automated system could handle 100 or more.

 

The next step could be building the process up to commercial scale, and the team also sees opportunities to apply the same kind of disassembly system to electric vehicle drive trains for recovery of materials such as rare earth magnets, copper, steel and intact power electronics.

 

To make recycling more economically feasible, it must be done at high throughput and be flexible enough to process multiple consumer products in a single facility, Jonathan Harter added.

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Source：Adsale Plastics Network Date ：2021-08-19 Editor ：JK

Researchers at the Department of Energy’s Oak Ridge National Laboratory (ORNL) of the U.S. have developed a robotic disassembly system for spent electric vehicle battery packs to safely and efficiently recycle and reuse critical materials while reducing toxic waste.

 

According to Tim McIntyre, principal investigator in ORNL’s Electrification and Energy Infrastructures Division, only a small percentage of lithium-ion vehicle batteries are recycled today, and the majority of the processes used to do so are not automated.

 

Whether a recycler simply wants to get through the outer housing to access batteries and replace worn components, or completely recycle battery stacks for recovery of cobalt, lithium, metal foils and other materials, the first step is battery diagnostics for safe and efficient handling and disassembly.


“With our system, when the robot picks up the battery pack and puts it on the production line, it marks the last time a human will touch it until it’s in pieces and parts,” introduced Tim McIntyre.


1_web.jpg

Researchers at Oak Ridge National Laboratory developed a robotic disassembly system for used electric vehicle batteries.


Limiting human interaction is important for both safety and efficiency. The robots swiftly remove bolts and other housing regardless of any remaining charge, whereas human operators must undertake an exacting, lengthy process to discharge used batteries before breaking them down manually.

 

Automated disassembly reduces human exposure to toxic chemicals found inside the batteries and high power levels that are approaching the 900-volt level in some newer vehicles.

 

The automated system, developed as part of DOE’s Critical Materials Institute, or CMI, can be easily reconfigured to any type of battery stack. It can be programmed to access just the individual battery modules for refurbishment or reuse as stationary energy storage, or the batteries can be taken apart down to the cell level for separation and materials recovery.

 

The work builds on expertise developed in previous ORNL projects for the CMI that focused on robotic disassembly of hard drives for recovery of rare-earth magnets. Engineers also proved that those magnets can be directly reused in electric motors.


2_web.jpg

The newly developed line aims to make battery recycling safer, faster.


“Automatic disassembly of components containing critical materials not only eliminates labor-intensive manual disassembly, but provides for an efficient process to separate the components into higher value streams where the critical materials are concentrated into individual feedstocks for recycle processing,” said CMI Director Tom Lograsso.

 

The researchers follow the same protocol each time: breaking down the used component manually and collecting data on that process to create the robotic tools and controls needed to drive an automated system, stated Jonathan Harter, ORNL project team member.

 

“Industry is not limited on the amount of batteries they can take into this process. There is a significant backlog already accumulated. The limiting factor is the time it takes to perform the electrical discharge and perform disassembly manually,” said Jonathan Harter. He estimated that in the time it takes in some processes to disassemble 12 battery stacks by hand, the automated system could handle 100 or more.

 

The next step could be building the process up to commercial scale, and the team also sees opportunities to apply the same kind of disassembly system to electric vehicle drive trains for recovery of materials such as rare earth magnets, copper, steel and intact power electronics.

 

To make recycling more economically feasible, it must be done at high throughput and be flexible enough to process multiple consumer products in a single facility, Jonathan Harter added.

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