Smartphones that are used at hand every day have proven that frequent charging does not reduce the efficiency and longevity of the battery.
NASA has conducted special research on how to extend battery life. The results of the study show that the more fully charged the battery, the greater the loss. If the lithium battery's power is kept in the middle, the battery life will be longer. This means that you should not charge the lithium battery to 100%, and do not exhaust the lithium battery. The smaller the interval between charging and discharging, the better.
If the capacity of one of the battery cells in the battery pack is lower than the other cells, after a plurality of charging and discharging, the battery cell will eventually enter a deep discharge state, and may even cause the entire battery pack to malfunction. In order to avoid such a situation, a mature electric vehicle will be equipped with a detection device to monitor the working state of each battery unit; some will also set a discharge device to balance the state of charge of the battery unit.
How long does it take to fill the battery?
Different models, different charging equipment, and the time to fully charge the battery vary greatly.
Under normal circumstances, if you use the charging pile or charging wall box specified by the manufacturer, you can fully charge the battery within six to eight hours. However, if you use ordinary household power, the battery can last up to ten hours. This is also the main reason for restricting electric vehicles for intercity travel.
Is the cruising range longer in hot weather?
Hot weather may make the battery's redox reaction more active, but the possibility of reducing the cruising range of the vehicle is greater. In hot weather, most drivers and members use car air conditioning systems, which obviously increases power consumption. In addition, when the vehicle is working in a high temperature environment, the amount of heat generated by the vehicle battery is large, and the coolant circulation is also required to help the battery control the operating temperature.
Will it be out of power quickly in cold weather?
Unlike batteries used in cameras and mobile phones, electric vehicles are equipped with industrial-grade products that have been designed and manufactured to take into account the performance in harsh climates. Lithium-ion batteries are used at low temperatures, and the efficiency of the battery will be significantly reduced, but mature electric vehicle manufacturers have equipped the battery with "air conditioning" - when the weather is cold, the driver can enjoy the heated seat, and the battery can also enjoy the "electric blanket". .
Will the battery be stolen after parking?
Unlike gasoline vehicles, electric vehicles' batteries are often fixed to the chassis part of the vehicle. Professional equipment and tools are required for disassembly. The battery type of the electric car is special, and there is no conventional positive and negative pile head. After the theft, it is not easy to sell, and there is no door to use. It is also boring.
Can an electric car be equipped with an external device?
Electric vehicles can of course be connected to external electrical equipment, cigarette lighters that are carried with the car, flash memory and SD cards that play songs, and the recently popular driving safety recorder. However, the power management of electric vehicles is more strict than that of gasoline vehicles. When the current of the electric equipment exceeds the safety threshold and the remaining power of the vehicle itself is low, the on-board computer will cut off the power supply of the external equipment without mercy.
Will the cable be stolen while charging?
This is really a matter of spelling people. At this stage, people who buy electric cars will have fixed parking spaces, some of them will have fixed parking spaces in the basement, and neighbors and staff who can access electric vehicles. Under such conditions, the charging cable is still missing, and perhaps other reasons should be checked.
Which is better for fast charge and quick change?
From the current results, "charging" has clearly won. Most electric vehicles in recent years have adopted charging technology for electric vehicles. This seems to imply that "changing electricity" has become a past tense.
In several cities such as Hangzhou, electric vehicles that can replace power batteries have been sold. The advantage of “changing electricity†has been very obvious. Replacing the battery can greatly shorten the waiting time for charging. When the meter shows that the vehicle is running low, it can be directly driven to a nearby power station. If there are not many vehicles, the power can be changed in three or five minutes, and the electric vehicle can be "full of blood" on the road. However, infrastructure construction directly restricts the development of “changing electricity†– land resources in large and medium-sized cities are scarce. Building a large-scale power station requires not only multiple land in the central city, but also as far away as possible from residential areas. Text / reporter Wu Hao
Is the battery charging when reversing?
Vehicle movement necessarily requires work, and electric vehicles are still consuming electricity. If it is replaced by a gasoline car, it seems easier to explain that the engine needs to be powered regardless of whether it is driving forward or backward.
Self Tapping Screws
Because of its self forming or tapping the thread matching it, it has high anti loosing ability in combination and can be disassembled. In the small screw, its size, thread type, head type, drilling performance, in the engineering use of high tension, single, unilateral combination features almost unlimited. Self tapping materials can be divided into carbon steel and stainless steel, of which 1022 medium carbon steel is the main material.
1: According to the different head, it can be divided into: round head, flat head (i.e. countersunk head), top stigma, round top wide side head, big round head (i.e. big flat head), hexagon bearing hole head, hexagon bearing hole Huasi head, hexagon bearing hole Huasi head
Round head: it is the most commonly used head shape in the past
Flat head: it can replace the new design of round head and mushroom head. The head is low in diameter, and the peripheral circumference of the head is connected with the high edge of the characteristic, which makes it play a driving role for high-strength torque. It is slightly different from the hole head in head shape
Top column head: the diameter of the standard flat round top column head is smaller than that of the round head, but it is higher due to the groove depth. The smaller diameter increases the pressure acting on a small area, and can be closely combined with the flange and the increased surface layer. As the head is made in the drilling die set to ensure the concentration, they can be successfully applied to the holes in the internal drilling
Dome wide side head: due to the undercutting of the head to restrain and reduce the wear of the wire components, it is most commonly used in electrical appliances and tape recorders, providing an attractive design type for the middle and low head type with its more sufficient bearing surface
Big round head: also known as oval top wide edge head, is a low type, cleverly designed large diameter head. When the combined tolerance of additional function allows, it can be used to cover the metal plate hole with larger diameter. It can also be recommended to use flat head instead
Hexagon socket head: a kind of joint with the height of wrench head and the size of hexagon head. The hexagon is completely cold formed by the reverse hole mold, and there is an obvious depression at the top of the head
Hexagon socket head: such as the standard hexagon socket head, but at the same time, there is a socket face on the base of the head to protect the assembly from damage of the wrench. Sometimes the function of things is far more important than appearance
Hexagon head: This is a standard type of torque acting on the hexagon head. It has the feature of trimming sharp corners close to the tolerance range. It can be recommended for general commercial use. It can also be applied to various standard patterns and various thread diameters. Because of its necessary second process, it is more expensive than general hexagon socket
2: According to the groove type, there are four types: slotted head type (also called slotting), cross slotted head type, cross slotted head type, cross slotted compound slotted head type and meter slotted head type
3: According to the standard can be divided into: GB, DIN, ANSI, BS