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Instant charging technology allows electric buses to be charged when they get on and off.
You can imagine that there is a public transportation system that can provide transportation services for people in the city, but it does not emit any exhaust gas, does not require overhead power lines, and does not require long waits for recharging. But now there is no need for fantasy, because a new type of charging system can realize your dream in the near future. It can quickly “instantaneously charge†an on-board battery for an electric bus in as little as 15 seconds. The new technology developed by ABB will be used on large-capacity electric vehicles in Geneva, Switzerland as part of the TOSA pilot project.
According to ABB, this type of bus is capable of charging 400 kilowatts in 15 seconds at the designated location. This allows the bus to be charged when the passenger gets on and off the bus, and the battery is fully charged by charging the terminal for three to four minutes. Claes Rytoft, ABB's Chief Technology Officer, said: "With the rapid charging technology, we can pilot a new generation of electric buses that do not require overhead lines. This project will pave the way for more flexible and cheap public transport infrastructure. And it will reduce urban pollution and noise.
The quick charger uses a laser-controlled arm that connects the charger to the car's outlet and it can be integrated with the bus station. This system can enable electric buses to replace trams and subway systems in urban areas, and in the process can get rid of unsightly overhead power lines. This system is designed to optimize high-frequency bus routes in key urban areas. Since the energy for the pilot project in Geneva came from hydropower, it was declared a "zero carbon emission" solution. However, this argument is not accurate, because some areas use coal or natural gas to generate electricity. The TOSA pilot project plans to operate the bus between the airport in Geneva and the International Exhibition Center.
NSK manufacture a full range of deep groove ball bearings. These bearings are the most common type and are used in a wide variety of applications.
Single-Row Deep Groove Ball Bearings
Pressed Steel Cages
Single-row deep groove ball bearings are the most common type of rolling bearings. Their use is very widespread.
In addition to open type bearings, these bearings often have steel shields or rubber seals installed on one or both sides and are prelubricated with grease. Also, snap rings are sometimes used on the periphery. As to cages, pressed steel ones are the most common.
For big deep groove ball bearings, machined brass cages are used.
Machined cages are also used for high speed applications.
Extra Small Ball Bearings and Miniature Ball Bearings
Miniature and instrument ball bearings can be divided into two basic types, deep groove and angular contact. The first (deep groove) can be further divided into the following five classes depending on their design details:
Standard type
Flanged outer ring
Extended inner ring
Expanded type in which one ring has a radial thickness that is larger than normal compared with the bearing width.
Thin section type in which both rings are extra thin in the radial direction. They can also be classified as: open, shielded, or sealed.
Maximum-Type Ball Bearings
Maximum-Type ball Bearings contain a larger number of balls than normal deep groove ball bearings because of filling slots in the inner and outer rings. Because of their filling slots, they are not suitable for applications with high axial loads. types of bearings have boundary dimensions equal to those of single-row deep groove ball bearings of Series 6200 and 6300 respectively. Besides the open type, ZZ type shielded bearings are also available. When using these bearings, it is important for the filling slot in the outer ring to be outside of the loaded zone as much as possible. Their cages are pressed steel.
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Shijiazhuang Longshu Mechanical & Electrical Equipment Trading Co., Ltd. , https://www.longsbearings.com