The Qin is the successor of the BYD F3DM, the world's first mass-produced plug-in hybrid automobile which launched in China in 2008. In April 2012, BYD replaced the F3DM with the Qin.[2][3][4] The first-generation Qin is the plug-in hybrid version of the BYD Surui (the second-generation BYD F3), and deliveries in China began in mid-December 2013.[5]
The second generation model includes two variants called the BYD Qin Pro and BYD Qin Plus. The BYD Qin Pro was launched in September 2018,[6] while the succeeding Qin Plus was launched in 2021. An updated version of the first generation is sold alongside the second generation Qin variants.
The plug-in hybrid variant (which was the only variant available in the beginning) currently offers a NEDCall-electric range of 82 km (51 mi)[12] and a hybrid electric powertrain that can extend the car's total range to a distance similar to that of a conventional petrol-powered vehicle. The all-electric variant offers a NEDC range of 520 kilometres (320 mi).[13]
The Qin was designed with BYD's next-generation, more efficient, dual-mode, electric powertrain. The BYD Qin uses a smaller lithium iron phosphate battery (LiFePO4, or LFP) than its predecessor, the F3DM: 13 kWh instead of 16 kWh. The LiFePO4 battery has a high energy density, can withstand up to 4,000 charges and still retain 80 percent performance, and uses no toxic heavy metals in its manufacture. Due to its improved design, the new battery is about 50 percent smaller and lighter than the one used on the F3DM. The reduced battery pack size translates into reduced price at the expense of the all-electric range, which BYD estimates at 50 kilometres (31 mi). The larger battery in the F3DM delivers an all-electric range of 97 kilometres (60 mi). BYD said the Qin would be seven percent more efficient with savings in power and energy in all-electric (EV) mode.[8][10]
In hybrid mode, the Qin uses two 110-kilowatt (148 hp; 150 PS) electric motors and a 1.5-litre turbo-charged direct-injected engine, instead of the 1.0-litre 3-cylinder engine used in the F3DM, to output 223 kW (299 hp; 303 PS) of power and 440 N⋅m (325 lb⋅ft; 45 kg⋅m) of torque. According to BYD Auto, the Qin has a top speed of 185 km/h (115 mph) and can accelerate from 0–100 km/h (0–62 mph) in less than 5.9 seconds. Thanks to its smaller battery and increased wheelbase, the Qin will have more interior space than the F3DM, and the styling has also been improved over BYD's earlier models, most notably in the car's interior. The Qin features two large TFT LCD displays on the dashboard, equipped with the BYD "i" intelligent cloud system platform incorporating features like telematics, cloud-computing and a full range of services 24 hours a day.[8][10]
Retail sales of the BYD Qin began in Costa Rica in November 2013, and BYD planned to start sales in other countries in Central and South America in 2014.[14][15]
A pure battery electric version, the Qin EV300, was released in China in March 2016.[16] The BYD Qin EV300 is powered by a 218 hp electric motor and a battery pack that is expected to deliver a range of 300 km (190 mi). Top speed is 150 kilometres per hour (93 mph).[17] There are four versions of the Qin EV300.[11]
BYD Qin EV300.
2019 refresh
Despite the introduction of the Qin Pro in 2018, an updated version of the first-generation Qin is also in production as of 2019. The manufacturer refers to it as the "all-new Qin" (全新秦).
The new model uses the "dragon face" styling of the front end, with some changes to the taillights. The vehicle is shorter than the initial model (4,675 mm (184.1 in) vs 4,740 mm (186.6 in)), while the wheelbase and the width remain same.
While the initial model was offered as a plug-in hybrid or with an all-electric drivetrain, the updated model is offered with a petrol engine or with an all-electric drivetrain.
In the all-electric variant, the battery capacity is 53.1 kWh (191 MJ).[18][19]
The BYD Qin Pro is the first product of the second generation BYD Qin sedans; it debuted at the 2018 Beijing Auto Show. Initially sold alongside the first generation BYD Qin, it is the first BYD sedan to be designed by BYD's new chief designer, Wolfgang Egger.[21]
BYD Qin Pro rear
BYD's website states that the 2019 Qin Pro will have a "Dragon Face" design of the front grille and a rotating DiLink 12.8 inch touchscreen with artificial intelligence voice interaction system.[22] It will have a suite of advanced safety and driver-assistance systems[23] including an adaptive cruise control system with stop-and-go (ACC-S&G) and an automatic emergency braking system (AEB). High-strength steel comprises 73.5% of the weight of the car's body in white (in the gasoline variant).[24]
Powertrain
BYD offers three different powertrains on the model: the Qin Pro is available as an all-electric car, as a plug-in hybrid and as a conventional gasoline ICE vehicle. Some other models in the company's lineup, including the BYD Song, the BYD Tang and the BYD Song MAX also offer a choice of three different powertrains.
The BYD Qin Pro DM (the plug-in hybrid) is powered by a 154-horsepower (115 kW; 156 PS) 1.5-litre turbo, inline four engine combined with a 150-horsepower (112 kW; 152 PS) electric motor to produce a total of 304 horsepower (227 kW; 308 PS). The top speed of the BYD Qin Pro is 200 kilometres per hour (120 mph) and can accelerate from 0 to 100 km/h (0 to 62 mph) in 5.9 seconds.[25]
The BYD Qin Pro EV (the all-electric variant) features a 69.5 kWh (250 MJ) battery in the top version.[13]
BYD Qin Pro
Rear view
Qin Plus
For 2021, BYD introduced the Qin Plus as the refreshed version of the Qin Pro. The Qin Plus was unveiled during the 2020 Guangzhou Auto Show on November 20, 2020. Compared to the Qin Pro, it features restyled front and rear ends, while dimensions are unchanged. It is available as a plug-in hybrid DM-i variant and battery electric version.
Qin Plus DM-i
The Qin Plus initially was only available with a plug-in hybrid powertrain, using BYD's latest system called the DM-i. The Qin Plus was one of the first BYD products with the DM-i system to be introduced to the market, alongside the Tang DM-i and Song Plus DM-i crossovers; the market launch event was in January 2021.[26]
The DM-i powertrain of the Qin Plus combines a 1.5-litre naturally aspirated engine with a single electric motor for a total output of about 170 horsepower (127 kW; 172 PS). The engine's thermal efficiency ratio is claimed to be at the industry-leading 43% as of 2021. Fuel consumption of the Qin Plus does not exceed 3.8 litres per 100 kilometres (74 mpg‑imp; 62 mpg‑US). Its Blade battery provides an electric range of 50–120 km. The car is equipped with an E-CVT transmission.[citation needed]
The 1.5-litre naturally aspirated engine of the Qin Plus DM-i uses the Atkinson cycle and features cooled exhaust gas recirculation (EGR), a split cooling system (the engine cooling circuit is split into two parts, one for the cylinder head and one for the block) and an electric water pump. The engine develops a maximum power output of 81 kilowatts (109 hp; 110 PS) at 6000 rpm, and the peak torque is 135 N⋅m (100 lb⋅ft; 14 kg⋅m) at 4500 rpm. The compression ratio is 15.5:1 and it meets the National VI B emission standard in China.[citation needed]
The Qin Plus DM-i is equipped with a floating LCD instrument panel and a floating large-size central control screen, combined with a three-spoke flat-bottom multifunction steering wheel.[27]
Qin Plus DM-i
Rear view
Qin Plus EV
The top version features a 71.7 kWh battery with 600 km range.[28] Versions with batteries 47.5 and 57 kWh are also available, with ranges of 400 and 500 kilometres (250 and 310 mi) respectively.[20]
^Wanxiang, Liu (2018-10-19). "乘联会：3月新能源乘用车销量回升至1.56万辆 比亚迪北汽江淮包揽前三" [New energy passenger car sales in September: Chery eQ / BYD Yuan / BYD e5 / BYD Tang won the market segment] (in Chinese). D1EV.com. Retrieved 2018-10-21.
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