The application of robotic welding technology in production.

In recent years, there have been multiple casualties due to fires caused by electric bicycles spontaneously igniting inside buildings. According to data released by the Fire Rescue Bureau of the Ministry of Emergency Management, there are approximately 2,000 electric bicycle fires occurring nationwide each year, with 90% happening in public areas such as lobbies, hallways, and stairwells.

Why do electric bicycles suddenly catch fire? Why is it so troublesome for owners to push bicycles up and down the stairs?

Lithium battery fires and explosions account for most of the reasons for electric vehicle fires. Lithium batteries are lightweight and compact, and they have a higher energy density under the same specifications, meeting the design requirements of the new national standard for bicycles. In recent years, the market share of lithium electric vehicles has further expanded. However, the frequent occurrence of lithium battery accidents has caused many consumers to worry. In fact, lithium batteries from regular manufacturers undergo strict quality control throughout the production process, making accidents unlikely. For example, in May of this year, an electric vehicle exploded in an elevator in Chengdu, Sichuan Province, because the recycled lithium battery used by the owner was swollen. The explosion of an electric vehicle in Hangzhou was also due to the owner purchasing a cheaper, unbranded battery! The mismatch between the lithium battery and the charger was the result. Generally speaking, low-priced, poor-quality lithium batteries are the main culprits of electric vehicle fires and explosions.

Lithium battery explosions happen very quickly, and there is no reaction time in a closed space, so you cannot push the vehicle upstairs. The phenomenon of residents pushing large vehicles upstairs mainly occurs in old communities that lack dedicated parking sheds for electric vehicles. The difficulty of charging downstairs leads to the use of private wiring, and the chaos of large vehicles going upstairs raises the question of how to solve this.

Since charging is difficult, then don't charge. Shared electric bicycles can be taken and used. Electric vehicles use green energy, which the government strongly advocates. Investors are optimistic about the returns that can be generated through continuous financing, and the increase in user numbers can lower costs, leading to profits through innovative advertising cooperation models. However, the sharing of electric vehicles consumes a large amount of public resources and is greatly affected by factors such as personnel quality and policies, resulting in high maintenance costs. If this model is promoted nationwide to solve the convenience and safety of residents using electric vehicles, it will be a huge management system that will bear significant pressure, and its operating costs will be high. It can be imagined that the development of shared electric vehicles has a long way to go.

Shared batteries are also a solution model. China has nearly 300 million electric vehicles, and scanning to swap batteries for immediate full-range endurance should have a good market. An important factor affecting the profitability of individual swap stations is the number of vehicles swapped daily. Considering the initial investment costs, later management and maintenance, and the stable demand for vehicle replacements, shared battery cabinets are generally located near business districts rather than residential areas. However, the reality is that for many electric vehicle owners, the power demand is only to meet commuting needs. The fluctuation in power costs is not only considered expensive but also becomes troublesome when they have to return it after use. If the profitability model cannot be further expanded, the promotion among consumers and residents will inevitably face significant resistance.

What about scanning charging piles? Many old communities have set up charging piles, which have solved some charging problems. However, the distribution of charging piles within communities is uneven, and many non-charging 'zombie cars' occupy spaces for a long time, leading to difficulties in management for plugging in and extracting. Additionally, charging pile companies need land for construction, which will still face various obstacles. The layout of the community affects charging piles, and pile companies often encounter situations where landowners hold out, increasing the cost of building piles. When local governments introduce subsidy policies for charging pile construction, some stringent regulations make it difficult for pile companies to obtain subsidies. With the high costs of building charging piles, related companies can only raise charging fees to make a profit, resulting in high charges. If we want to be widely accepted and eliminate the phenomenon of electric vehicles going upstairs, all of the above are issues that pile companies need to consider.

The management of electric vehicles going 'upstairs' should be more about guidance than prohibition. Measures should be flexible, and the thinking should also be flexible. The fundamental reason why electric vehicles continue to go upstairs despite prohibitions is that some residents do not recognize the dangers of charging electric vehicles upstairs, leading to gaps in understanding and a sense of complacency. Relevant departments and media should strengthen social publicity to make more residents fully aware of the dangers of charging electric vehicles 'upstairs,' ensuring that everyone knows the risks to avoid danger. All sectors of society can also take action to manage the parking and charging behavior of electric vehicles while promoting the importance of not choosing poor-quality, low-priced lithium batteries, opting for regular manufacturers, guiding the quality of lithium batteries, and strictly prohibiting charging lithium batteries in residential areas.