Hyundai patents an all-solid-state EV battery system within the US


Can solid-state batteries enhance EVs much more? Hyundai is betting on it. The automaker just lately filed a patent for a pressurized all-solid-state EV battery system within the US.

Hyundai recordsdata patent for all-solid-state EV battery system

Hyundai appears to be like to get a leg up as EV adoption continues climbing. The corporate’s newest plans embody enhancing battery stability and power density. In different phrases, Hyundai desires better-performing EVs that last more.

The patent for an “all-solid-state battery system supplied with pressurizing gadget” was revealed on December 28, 2023.

Hyundai describes an all-solid-state battery system the place stress is continually maintained in every cell no matter charging and discharging charges.

Conventional lithium-ion batteries use a liquid electrolyte to separate the cathode and anode. Strong-state batteries use, nicely, stable electrolyte. Due to this fact, even when the electrolyte is broken, the battery maintains stability and efficiency.

Strong-state batteries are gaining reputation as a possible different to present lithium-ion batteries. The expertise guarantees to be lighter and safer whereas providing sooner charging and higher efficiency. Nonetheless, sure limitations are holding the expertise again.

Hyundai all-solid-state battery system (Supply: USPTO)

Strong-state batteries are nonetheless comparatively new, and since there isn’t any liquid electrolyte, a stable materials should be used. These supplies, like graphite, will be costly and laborious to supply.

Hyundai’s new all-solid-state battery system is designed to beat these points. The system applies fixed stress to every cell throughout charging and discharging.

(Supply: USPTO)

The patent describes battery cells organized in a closed pressurized chamber. The cells are pressurized by fluid in an isostatic stress. A pressurizing gadget is used to regulate the provision of the fluid to the chamber.

Sensors are used to find out the stress and temperature within the chamber, whereas a voltage detector reveals the voltage of every cell.

2023 Hyundai IONIQ 5 (Supply: Hyundai)

An included controller is used to begin charging and discharging every cell when the temperature and stress are inside a set vary. The system additionally consists of a temperature-adjusting gadget to keep up optimum temperatures.

Electrek’s Take

Hyundai isn’t the one automaker that goals to alter the sport with solid-state EV batteries. Toyota has been vowing to launch the expertise for years. Its first solid-state batteries had been due out in 2021, then in 2022, and now it appears to be like like round 2030. And that might be in restricted provide.

GM, Volkswagen, Ford, Nissan, Honda, Mercedes-Benz, and others are engaged on solid-state battery tech.

Hyundai desires to be one of many high three EV producers by 2030. The corporate’s CEO, Jae Hoon Chang, has mentioned Hyundai will develop solid-state LFP and NCM batteries to decrease prices with extra flexibility.

The South Korean automaker is not any stranger to the expertise. Hyundai has just lately filed patents for electrolyte options, binder options, and strategies of producing solid-state battery electrodes.

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