Hyundai's Ioniq-branded lineup of battery electric vehicles has grown spectacularly since the launch of the Ioniq 5 more than five years ago.Since then, the Ioniq family of EVs has added models like the Ioniq 6 sedan, Ioniq 5 N and Ioniq 6 N high-performance variants, the Ioniq 9 three-row SUV, and the Europe-only Ioniq 3 subcompact hatchback launched earlier this year (pictured).Family-Focused Ioniq 7 to Fill the Space Between the Ioniq 5 and Ioniq 9HyundaiIt looks like the expansion is set to continue at an even more rapid pace, with Auto Express reporting that Hyundai is gearing up for the launch of two new Ioniq crossover SUVs within the next 12-18 months: the subcompact Ioniq 4 and the midsize Ioniq 7.The new models will fill two important gaps in Hyundai's EV range, as the Ioniq 7 will bridge the gap between the midsize Ioniq 5 and the three-row Ioniq 9 large SUV (pictured above).Slightly larger than the Ioniq 5, the Ioniq 7 will target families first and foremost, which explains its more conventional SUV design and additional interior space compared to the Model Y-sized Ioniq 5. It's expected to offer two- and three-row seating options.The Ioniq 7 will reportedly feature single- and dual-motor powertrains, an 800-volt architecture enabling ultra-fast DC fast-charging, and a WLTP range of at least 400 miles. The model will also get Hyundai's latest Pleos infotainment system and over-the-air updates.The Ioniq 7 could be priced from £45,000 ($59,500) in the UK.The Ioniq 4 Will Effectively Replace the Kona EVAs for the Ioniq 4, it will be positioned between the Ioniq 3 hatchback and the Ioniq 5, effectively taking the space that the Kona EV currently occupies and competing with the likes of the Renault 4 and Skoda Epiq.Chris McKinnon, Hyundai Europe's VP of product, told Auto Express the upcoming subcompact crossover will be vital for the brand in Europe. When asked if the model will be similar to the Kia EV3, he said: "I really can't answer that question, to be honest. Watch this space."As with the Kia EV3, the Hyundai Ioniq 4 is likely to sport a more SUV-like design than the Ioniq 3 and Ioniq 5. As a result, rear passengers should have more headroom and legroom than in the Ioniq 3, while the trunk should be larger and more versatile.HyundaiIt will prioritize a safe, comfortable drive rather than sporty dynamics, although it's too early to rule out N performance versions. Expect the same powertrains as the Kia EV3, namely 42-kWh and 61-kWh battery packs and a front-mounted electric motor. If an N variant does happen, it could get a dual-motor powertrain like the Kia EV3 GT.According to Auto Express, the Ioniq 4 is likely to feature a similar interior design with the Ioniq 3, including the Pleos infotainment system and "living room"-like cabin (pictured above). Prices should start at around £25,000 (approximately $33,000) in the UK.The Hyundai Ioniq 7 will be the first to arrive in Europe in about a year, followed by the Ioniq 4 half a year later. Both models appear to have been designed specifically for European markets, but there's still a glimmer of hope for them to arrive stateside as Hyundai hasn't made any official announcement yet.