Why 48V?
The three developed systems all have power systems, and the same place is based on a 48v power platform, which is mainly because the motor is more stable and more powerful, and it is more convenient and fast to charge at the charging station with 48v. But they may also consider that the on-board power supply system will be used for household appliances in the car, such as air conditioners, microwave ovens, refrigerators and so on. The power system is mainly used to park the trailer and is connected with the tractor.
AL-KO electric platform function
1 and AL-KO's new generation chassis integrate 48V electric drive, which can actively drive the trailer. This will reduce the energy consumption of tractors by up to 70% to increase the cruising range of tractors. 2, X-RTA active charging mode (power recovery), by towing the RV to brake or downhill, charging the car battery to get more energy. 3. Torque Vector Trailer Stability System (anti-sway and anti-roll), an automatic control system based on sensors, can independently control the speed of a certain wheel through electric drive, and can keep the vehicle in a balanced driving state in a short time. 4. The trailer assistant monitors the trailer status in real time through the vehicle-mounted electric loading camera and intelligent sensor. 5, self-sufficient, the car battery can meet the needs of life in the car and provide working energy for the electrical appliances in the car. Such as refrigerators, air conditioners and entertainment facilities. 6, the connection of intelligent facilities, thanks to the car battery, the trailer can be connected to more intelligent facilities. Such as GPS positioning, visible mileage, battery charging status, electronic anti-theft and so on.
Alko and Huber also talked about a scalable battery system, which means that customers can buy battery capacity according to their own needs. According to Alko, all the functions of the electric chassis can be controlled through the mobile APP, and the battery power and 360-degree surround camera can also be viewed in real time. This increases safety and is easier to operate.
Des Laves. E.home function
E home? Coco is the first trailer with electric drive chassis, which was unveiled at the 20 19 German Auto Show. E home? The core of Coco is two hub motors, which turn a passive trailer into an active life car. 1, equipped with intelligent electronic control module, can set the weight value of the towed vehicle, such as towing 100kg RV, so that the trailer RV is suitable for towing more vehicles; 2. e home? Coco can also control the wheels independently through intelligent electronic modules to achieve a more stable driving state (anti-swing, anti-roll); 3. Power recovery, which can be used to charge the car battery when going downhill; 4. 360-degree U-turn can be realized independently, and the on-board motor provides power for the trailer; 5. Increase battery life through solar panels.
E home? Coco demonstrated its protective measures for the power system. The impact absorbing element (the silver part in the above picture) can effectively protect the battery installed in the chassis frame. The battery is suspended in a separate internal frame, which in turn is connected to the external main frame. The collision absorbing element between the two frames can protect the battery in case of an accident.
Knox. & amp？ Bosch? 48V system
(Bosch) Bosch Engineering Company and Knaus Talbot (Knaus? Tabbert) has introduced a new 48-volt system chassis, which can provide campers with greater flexibility and independence when traveling and vacationing. 1, with power recovery device during driving, which can charge the battery; 2, it is easy to control the movement of the trailer, and the independent power system makes the action of the trailer more convenient; 3. The power unit constitutes the foundation of digital service, which can connect more intelligent facilities and increase the comfort of the trailer; 4. Provide power for the daily use of RV electrical appliances, such as refrigerator air conditioning.
Knox. & amp？ Bosch? 48V system includes three parts: E-axis, sensor and battery; Its battery adopts modular structure design, and customers can customize the required battery capacity according to their own needs. It can accommodate up to eight 48v lithium batteries, each weighing 15kg and weighing 2.4kwh The data is so accurate because this Bosch technology has been used in other projects.
The constant change of technology
Make the trailer relatively independent; Recover energy through braking; Increase the driving safety and convenience of the trailer. Saving energy, intelligent system, providing a more comfortable living environment for RV camping and having autonomous mobility are one of the important research and development goals of electric trailer chassis. This is a brand-new field. Under the high standard requirements of the automobile industry, the industry is also exploring more possibilities that electric chassis can bring.
This article comes from car home, the author of the car manufacturer, and does not represent car home's position.