General Motors executive vice president Doug Parks said GM is developing million-mile batteries for electric vehicles.
Tim Grewe, GM’s director of battery engineering and electrification strategy, introduced GM’s approach to chemistry, battery and module design, and how high-volume Production of electric vehicle batteries. At the same time, the latest report from Reuters said GM executive vice president Doug Parks (Doug Parks) also said that GM is developing a million-mile battery for electric vehicles.
GM discloses the latest progress in electric vehicle battery development, is working on a million-mile battery
In Grayway’s view, GM is the winner of the pouch battery: “It’s a huge leap toward low-cost batteries that actually maintain performance and range. Compared to today’s Bolt EV batteries, the cobalt content is 70% lower. %.” The soft-pack battery mentioned by Grayway will be put into production at the Lordstown battery plant, a joint venture with LG Chem in Ohio, USA. At the same time, GM is also co-developing with LG Chem to change from nickel-manganese-cobalt chemical composition to NCMA mixed chemical composition, where A stands for aluminum, which is the key to reducing the amount of cobalt by 70%. There are reports that Tesla has also switched to NCMA with the help of LG for the Model 3 made in China.
In terms of production capacity, simplification, modularization, and assembly-line production are critical for high-speed, high-volume cell production. While the Lordstown, Ohio battery plant covers an area about the size of 30 football fields, Growe said there are challenges with GM’s planned 30 GWh capacity, which is only needed for 1 million EV battery packs averaging 30 kWh. production capacity. In the future, the Lordstown Battery Factory will further increase its production capacity, or even double it, by expanding the plant and speeding up the production line. Meanwhile, Grayway confirmed that the Lordstown battery factory will only produce pouch cells, while the prismatic cells will be produced in China for GM’s electric vehicles sold in the Chinese market.
According to Grayway, the size and shape of the pouch cells are critical. “All of our applications use the same battery cell, and all vehicles are guaranteed production scale and production quality. Although 100 Ah is a large number, it is about 20 small cylindrical battery cells that everyone is familiar with. We do not Instead of rolling up these electrodes into individual cans, they are laid flat and welded firmly together to form a long soft pack.”
The pouch battery can be stacked vertically for high-occupancy pickups or horizontally for low-slung sports cars, while providing better footroom. Using horizontal stacking, one of the GM EV batteries can achieve a 22-kilowatt-hour power reserve, according to Grayway.
“I’m sure our true breakthrough innovation will come sooner than anyone expects,” asserts Grayway. He listed a series of developments GM has made in batteries, including next-generation electrolytes to produce million-mile batteries, solid-state lithium metal anodes, zero-cobalt chemistry, and better separators. At the same time, GM’s future battery packs are easier to maintain, and modular cells of different chemistries and sizes, and even future battery components, can be interchanged. A wireless communication system in the battery pack allows dealers to mix and match and replace a single faulty module instead of replacing the entire battery pack.
It is worth mentioning that Greyway gave an example of a soft pack battery to reply how GM recycles or reuses batteries from electric vehicles: the advantage of a soft pack battery is that there is a positive electrode and a negative electrode, and two are connected to the electrodes or welded. Pole ears together. If there are 20 positive and negative electrodes stacked together in a pouch battery, how can it be broken down by some chemical process without mixing the cathode and anode together? In fact, the disassembly process is very easy, just take out the two tabs and separate them together, which can be recycled at low cost.
According to reports, GM’s current research and development in the battery field mainly involves million-mile batteries, cobalt-free chemistry, solid-state batteries, and ultra-fast charging.
General Motors executive vice president Doug Parks said GM is developing million-mile batteries for electric vehicles.
Tim Grewe, GM’s director of battery engineering and electrification strategy, introduced GM’s approach to chemistry, battery and module design, and how high-volume Production of electric vehicle batteries. At the same time, the latest report from Reuters said GM executive vice president Doug Parks (Doug Parks) also said that GM is developing a million-mile battery for electric vehicles.
GM discloses the latest progress in electric vehicle battery development, is working on a million-mile battery
In Grayway’s view, GM is the winner of the pouch battery: “It’s a huge leap toward low-cost batteries that actually maintain performance and range. Compared to today’s Bolt EV batteries, the cobalt content is 70% lower. %.” The soft-pack battery mentioned by Grayway will be put into production at the Lordstown battery plant, a joint venture with LG Chem in Ohio, USA. At the same time, GM is also co-developing with LG Chem to change from nickel-manganese-cobalt chemical composition to NCMA mixed chemical composition, where A stands for aluminum, which is the key to reducing the amount of cobalt by 70%. There are reports that Tesla has also switched to NCMA with the help of LG for the Model 3 made in China.
In terms of production capacity, simplification, modularization, and assembly-line production are critical for high-speed, high-volume cell production. While the Lordstown, Ohio battery plant covers an area about the size of 30 football fields, Growe said there are challenges with GM’s planned 30 GWh capacity, which is only needed for 1 million EV battery packs averaging 30 kWh. production capacity. In the future, the Lordstown Battery Factory will further increase its production capacity, or even double it, by expanding the plant and speeding up the production line. Meanwhile, Grayway confirmed that the Lordstown battery factory will only produce pouch cells, while the prismatic cells will be produced in China for GM’s electric vehicles sold in the Chinese market.
According to Grayway, the size and shape of the pouch cells are critical. “All of our applications use the same battery cell, and all vehicles are guaranteed production scale and production quality. Although 100 Ah is a large number, it is about 20 small cylindrical battery cells that everyone is familiar with. We do not Instead of rolling up these electrodes into individual cans, they are laid flat and welded firmly together to form a long soft pack.”
The pouch battery can be stacked vertically for high-occupancy pickups or horizontally for low-slung sports cars, while providing better footroom. Using horizontal stacking, one of the GM EV batteries can achieve a 22-kilowatt-hour power reserve, according to Grayway.
“I’m sure our true breakthrough innovation will come sooner than anyone expects,” asserts Grayway. He listed a series of developments GM has made in batteries, including next-generation electrolytes to produce million-mile batteries, solid-state lithium metal anodes, zero-cobalt chemistry, and better separators. At the same time, GM’s future battery packs are easier to maintain, and modular cells of different chemistries and sizes, and even future battery components, can be interchanged. A wireless communication system in the battery pack allows dealers to mix and match and replace a single faulty module instead of replacing the entire battery pack.
It is worth mentioning that Greyway gave an example of a soft pack battery to reply how GM recycles or reuses batteries from electric vehicles: the advantage of a soft pack battery is that there is a positive electrode and a negative electrode, and two are connected to the electrodes or welded. Pole ears together. If there are 20 positive and negative electrodes stacked together in a pouch battery, how can it be broken down by some chemical process without mixing the cathode and anode together? In fact, the disassembly process is very easy, just take out the two tabs and separate them together, which can be recycled at low cost.
According to reports, GM’s current research and development in the battery field mainly involves million-mile batteries, cobalt-free chemistry, solid-state batteries, and ultra-fast charging.
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