On April 11, 2021, IM Motor unveiled the power details of its luxury electric midsize sedan L7 on its social media. Based on the previously known information, the peak power and torque of the L7 four-wheel-drive version are 400 kW and 700 N·m respectively, giving the L7 a 0-100 km/h acceleration time of 3.9 seconds. The newly released range data specifically notes the existence of a rear-wheel-drive model, indicating that there are two types of L7, single-motor and dual-motor.
In addition, this announcement also confirms that the Hair-pin flat wire winding rear motor is the main power source with a power density of 6.9 kW/kg, while the front motor of the L7 is equipped with a unidirectional clutch, meaning it can be disconnected when not needed to reduce drag.
From the above information, two conclusions can be reasonably inferred:
- Both front and rear axles are equipped with permanent magnet synchronous motors;
- The rear motor has more power.
Furthermore, from the rendering above, the color scheme and shape of the corresponding parts indicate that both the front and rear subframes are likely made of aluminum alloy. The suspension system consists of front double wishbones and rear multi-link, both with metal springs.
The motor is mounted closer to the front axle and is installed at a higher height, presumably to avoid the steering mechanism. This structure indicates the reason why the L7’s front suspension is relatively long. It can be inferred that the core reason for this design is to gain more effective longitudinal space for the cabin.
The L7 is also equipped with a wireless charging system with a waterproof rating of IP69K and an output of 11 kW, which will become the world’s first wireless charging system for mass-produced cars. IM claims that the vehicle can automatically park in alignment with the wireless charging system, while weather resistance and foreign object detection features ensure normal operation of the system.
🔗Source: IM Motor
This article is a translation by ChatGPT of a Chinese report from 42HOW. If you have any questions about it, please email bd@42how.com.