Automobile transporting device and working process thereof

Abstract

The invention discloses an automobile transporting device and a working process thereof. A problem in an existing electric automobile application is to be solved. The automobile transporting device comprises an automobile train; the automobile train comprises a traction vehicle and electric automobiles; the electric automobiles are connected with each other through semi-connecting devices in sequence; the traction vehicle is connected with the electric automobile through a semi-connecting device; a current collection device is arranged on the traction vehicle and communicates with an overheadcontact system; and the overhead contact system is arranged on a road. According to the automobile transporting device, electric energy supply paths can be effectively reduced, the electric energy utilization rate can be increased; the automobile transporting device effectively runs within multiple running mileages at a constant speed so that energy consumption is reduced; traffic jams and trafficaccidents are effectively reduced; the traveling average speed is increased; the labor intensity of a driver of a towed vehicle is reduced; difficult charging and low charging speed are effectively avoided; the electric automobile manufacturing cost and battery scrap quantity are reduced; the automobile transporting device can run at a high speed; the safety is enhanced; and more efficient traveling is realized.

Description

technical field [0001] The invention relates to the field of transportation, in particular to a vehicle transportation device. Background technique [0002] With people's emphasis on environmental pollution and the advancement of new energy technologies, more and more electric vehicles have appeared in people's field of vision. [0003] The known electric vehicles can be roughly divided into two types according to the energy supply method: charging equipment charging (pile charging, car charging, the current mainstream energy supply mode of electric vehicles, most electric vehicles adopt), battery replacement (battery replacement is a niche mode, with some Buses, Weilai Company as the representative and some applications of BAIC), hybrid power system, contact line power supply (represented by trolley bus), fuel cell power supply, air battery (such as zinc-air battery, aluminum-air battery, etc., are still in the laboratory stage), etc. [0004] The main problems exposed by...

AI Technical Summary

Problems solved by technology

[0006] Second, the charging speed is slow: since the battery capacity of common electric vehicles in the market is mostly greater than 40 kWh, it takes a long time to fully charge due to various working conditions

Fast charging has a great impact on the life of the currently commonly used (scale use) ternary, lithium iron phosphate, and lithium manganate batteries, and it is usually not recommended to use it frequently; moreover, even fast charging takes a long time

In order to solve the problem of slow charging, since the 2008 Olympic Games, buses have adopted a battery replacement solution. This solution is more problematic, and usually only serves designated models (such as taxis, buses, sanitation vehicles, etc.) , The operating route is basically fixed, a large number of batteries need to be backed up, a single large site is required, service personnel need to be deployed, and there are requirements for the space of the vehicle

And there are problems such as deformation of the battery box after repeated replacements, reduction in electrical connection performance, and reduction in mechanical connection performance, which brings a large number of maintenance and safety hazards, and the overall operating cost is high

[0007] Third, the problem of battery aging and performance attenuation: the batteries used in the current electric vehicles are known to use multiple lithium, lithium manganese oxide, and lithium iron phosphate materials, and the battery packs usually have a charging frequency of less than 1000-2000 times; and its Performance gradually degrades

The life of a group of batteries cannot meet the driving requirements of the vehicle's full life under normal circumstances

[0008] Fourth, high cost: Due to the high cost of batteries, the price of electric vehicles is high

[0009] Fifth, safety issues: the thermal runaway temperature of lithium iron phosphate batteries is higher than that of lithium manganese oxide, lithium cobalt oxide and ternary lithium batteries

Due to the loading of a large number of batteries, problems such as small battery installation space and abnormal shapes have been caused during the vehicle design and manufacturing process, making design and manufacturing difficult; it is difficult to achieve ideal battery working conditions (represented by the consistency of the temperature field, the performance of lithium batteries Sensitive to temperature changes) and expensive to achieve ideal conditions

Due to the centralized energy storage of large battery packs, thermal runaway is more likely to spread when it occurs, which brings greater safety hazards

Safety issues also include vehicle driving safety, road driving will inevitably lead to traffic accidents; the battery pack may be punctured, squeezed and other accidents, there is a chance of battery fire; this has been publicly reported over the years, and there have been casualties

[0010] Sixth, battery recycling: a variety of material systems and a huge amount of scrap batteries, the workload and cost of recycling are huge

[0011] Seventh, the cruising range is short: under the high-speed driving conditions of the currently applied electric vehicles, the cruising range is greatly shortened

[0012] Eighth, battery performance changes: battery performance changes caused by temperature changes, low temperature has a greater impact on battery performance, represented by lithium iron phosphate batteries; in order to deal with low temperature problems, battery packs must be equipped with heat preservation and heating measures, low temperature When the cruising range is greatly shortened

[0013] Ninth, low energy utilization rate: long energy path, the energy supply path of a typical electric vehicle in known technology is: power plant → step-up transformer → line network → step-down transformer → battery charging → standby → battery discharge → vehicle motor; All the energy of the vehicle's driving distance is converted twice through the charging and discharging of the vehicle battery, and its total energy utilization rate is low.

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