Can solid-state batteries improve EVs even more? Hyundai is betting on it. The automaker recently filed a patent for a pressurized all-solid-state EV battery system in the US.
Hyundai files patent for all-solid-state EV battery system
Hyundai looks to get a leg up as EV adoption continues climbing. The company’s latest plans include improving battery stability and energy density. In other words, Hyundai wants better-performing EVs that last longer.
The patent for an “all-solid-state battery system provided with pressurizing device” was published on December 28, 2023.
Hyundai describes an all-solid-state battery system where pressure is constantly maintained in each cell regardless of charging and discharging rates.
Traditional lithium-ion batteries use a liquid electrolyte to separate the cathode and anode. Solid-state batteries use, well, solid electrolyte. Therefore, even if the electrolyte is damaged, the battery maintains stability and performance.
Solid-state batteries are gaining popularity as a potential alternative to current lithium-ion batteries. The technology promises to be lighter and safer while offering faster charging and better performance. However, certain limitations are holding the technology back.
Solid-state batteries are still relatively new, and since there is no liquid electrolyte, a solid material must be used. These materials, like graphite, can be expensive and hard to source.
Hyundai’s new all-solid-state battery system is designed to overcome these issues. The system applies constant pressure to each cell during charging and discharging.
The patent describes battery cells arranged in a closed pressurized chamber. The cells are pressurized by fluid in an isostatic pressure. A pressurizing device is used to control the supply of the fluid to the chamber.
Sensors are used to determine the pressure and temperature in the chamber, while a voltage detector shows the voltage of each cell.
An included controller is used to start charging and discharging each cell when the temperature and pressure are within a set range. The system also consists of a temperature-adjusting device to maintain optimal temperatures.
Electrek’s Take
Hyundai isn’t the only automaker that aims to change the game with solid-state EV batteries. Toyota has been vowing to launch the technology for years. Its first solid-state batteries were due out in 2021, then in 2022, and now it looks like around 2030. And that will be in limited supply.
GM, Volkswagen, Ford, Nissan, Honda, Mercedes-Benz, and others are working on solid-state battery tech.
Hyundai wants to be one of the top three EV producers by 2030. The company’s CEO, Jae Hoon Chang, has said Hyundai will develop solid-state LFP and NCM batteries to lower costs with more flexibility.
The South Korean automaker is no stranger to the technology. Hyundai has recently filed patents for electrolyte solutions, binder solutions, and methods of manufacturing solid-state battery electrodes.
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The California Air Resource Board (CARB) has withdrawn its request to enact the proposed Advanced Clean Fleets rule, which required fleets that are “well-suited for electrification” to reduce emissions through the phase-in of Zero-Emission Vehicles (ZEVs) and the banning of commercial diesel sales after 2035.
“Frankly, given that the Trump administration has not been publicly supportive of some of the strategies that we have deployed in these regulations, we thought it would be prudent to pull back and consider our options,” CARB chair Liane Randolph said in an interview. “The withdrawal is an important step given the uncertainty presented by the incoming administration that previously attacked California’s programs to protect public health and the climate and has said will continue to oppose those programs.”
Here’s hoping the BEVs and ZEVs have better luck next round.
Electrek’s Take
While some may celebrate the delay of the Advanced Clean Fleets rule, their celebrations will undoubtedly prove to be myopic and short-lived. The reality is that America is no longer the world leader in technology or transportation that backward organizations like the American Trucking Association believe it to be, and the fact is that delaying a transition to cleaner, more efficient technology will only put the US further behind its economic rivals in Asia and the Middle East.
Even before this Pyrrhic victory for American truck brands that have been slow to push BEVs into production, demand for diesel was at a generational low, and companies like Volvo, Renault, and Mercedes-Benz have been logging millions of electric miles on their deployed trucking fleets.
All of which is to say: if you thought it was going to be hard for American brands to catch up before, it’s going to be even harder now.
In an official announcement released at 8:15PM last night, Walmart-backed electric van company Canoo filed a voluntary petition for relief under Chapter 7 of the US Bankruptcy Code and will cease operations immediately.
“We would like to thank the company’s employees for their dedication and hard work,” said Tony Aquila, Canoo CEO and one of the company’s largest investors (according to the press release). “We know that you believed in our company as we did. We are truly disappointed that things turned out as they did. We would also like to thank NASA, the Department of Defense, The United States Postal Service (‘USPS’), the State of Oklahoma and Walmart for their belief in our products and our company. This means a lot to everyone in the company.”
As a result of the chapter 7 filing, Canoo will cease operations effective immediately, 8:15PM on 17JAN2025. The next step in the company’s dissolution will see a court-appointed trustee manage the liquidation of the company’s remaining assets.
Electrek’s Take
Rumors fueled by outspoken former employees of Canoo began circling late last year, with furloughed employees urging Oklahoma state leaders to “hold the electric vehicle company accountable” after it shuttered the OK production line that had received more than $100 million in state incentives.
The same employee claims that the company was being wildly mismanaged, and that what few Canoo vehicles the company said it had built in the Oklahoma plant were actually built in Texas, and that no vehicles were actually ever built in OK. “Nothing was functioning,” the unnamed employee said, speaking to local news channel KFOR. “There was no, there was not one robotics line that actually worked to fabricate a part.”
You could argue that the employees should also be held accountable for happily collecting paychecks without actually producing anything this whole time, but that’s a conversation for another day. For now, I’ll be mourning the loss of what could have been a fun little domestic off-roader, and hoping Canoo’s employees find a soft landing and better jobs elsewhere.
The US Department of Energy (DOE) today announced $1.2 billion in financing to replace Puerto Rico’s fossil fuel plants with solar and battery storage through 2032.
The DOE’s Loan Programs Office announced two conditional commitments and one loan closing to power producers in Puerto Rico. Each supports a project contracted with the Puerto Rico Electric Power Authority. The announcements include:
The closing of a $584.5 million loan guarantee to subsidiaries of Convergent Energy to finance a 100 MW solar farm with a 55 MW (55 MWh) battery energy storage system (BESS) in the municipality of Coamo and BESS installations in the municipalities of Caguas (25MW/100MWh), Peñuelas (100MW/400MWh), and Ponce (up to 100MW/400MWh)
A conditional commitment for a loan guarantee of up to $133.6 million to a subsidiary of Infinigen for a 32.1 MW solar farm with an integrated 14.45 MW (4.76 MWh) BESS, and a co-located standalone 50 MW (200 MWh) BESS expansion in the municipality of Yabucoa
A conditional commitment for a loan guarantee of up to $489.4 million to a subsidiary of Pattern Energy for three stand-alone BESS in the municipalities of Arecibo (50 MW/200 MWh), and Santa Isabel (50 MW /200 MWh and 80 MW/320 MW), and a 70 MW solar farm with an integrated BESS in the municipality of Arecibo.
If all are finalized, these projects would more than double LPO’s support for utility-scale solar generation and battery energy storage in Puerto Rico.
LPO provides low-cost financing and a rigorous due diligence process, making it a valuable resource for Puerto Rico as it works to rebuild an affordable, reliable, and clean energy system. As a result of reliance on imported fuel, the persistent threat of tropical storms, and underinvested infrastructure, Puerto Ricans today face average energy costs that are twice the US average – all while consuming only one-quarter of the energy of the US per capita.
LPO’s initial loan to a power producer in Puerto Rico, Project Marahu, closed in October 2024, and when complete will add more than 200 MW of solar and up to 285 MW of stand-alone energy storage to Puerto Rico’s grid.
Through its September 2023 partial loan guarantee to Project Hestia, LPO also supports virtual power plant (VPP)-ready rooftop solar and battery storage installations in Puerto Rico. As a nationwide project, Hestia’s sponsor is committed to at least 20% of installations under Project Hestia going to homeowners in Puerto Rico.
As part of its procurement plan, Puerto Rico Electric Power Authority seeks to install 1,500 MW of battery storage and requires a minimum capacity of storage to be co-located with each utility-scale solar project. Energy storage systems currently online in Puerto Rico are being dispatched every day.
When including Marahu, LPO’s closed and conditionally committed financing supports over 100% of the capacity Puerto Rico Electric Power Authority aimed to procure under its initial request for energy storage project proposals, the first of six.
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