China Tianjin Liwei New Energy Technology Co., Ltd. Company News

The automotive landscape has witnessed remarkable technological advancements, and car emergency starting power supplies are no exception. These devices have evolved from simple jump - starters to sophisticated power management systems.​ Today's high - end emergency starting power supplies are engineered to deliver high - amperage output, enabling them to start vehicles with large engines effortlessly. They can provide instant power, even in sub - zero temperatures, where traditional batteries may fail.​ Another remarkable feature is their intelligent design. Many power supplies are equipped with advanced safety features, such as over - charge protection, short - circuit protection, and reverse - polarity protection. These safeguards prevent damage to both the power supply and your vehicle's electrical system, ensuring safe and reliable operation.​ The versatility of car emergency starting power supplies is also worth highlighting. As mentioned earlier, they can be used to charge various electronic devices. Some models even come with inverters, which convert DC power to AC power, allowing you to use household appliances in your car.​ In addition, the charging process has become more convenient. Many power supplies support fast - charging technology, reducing the time it takes to recharge the device. This means you can quickly get back on the road, even if you've used the power supply multiple times.​ In summary, car emergency starting power supplies are a testament to modern automotive technology. They offer a combination of power, safety, and convenience, making them an essential addition to any vehicle.

In the unpredictable world of automotive adventures, a car emergency starting power supply emerges as an indispensable lifesaver. Picture this: you're late for an important meeting, and your car refuses to start. It’s a nightmare! But with a reliable emergency starting power supply, such panic - inducing situations become a thing of the past.​ These power supplies are designed to quickly jump - start your vehicle, regardless of whether it’s due to a dead battery, extreme weather conditions, or other electrical issues. They come in a variety of sizes and capacities, making them suitable for different types of vehicles, from compact cars to large trucks.​ One of the most significant advantages of modern car emergency starting power supplies is their portability. Small and lightweight, they can be easily stored in the trunk, glove compartment, or even a backpack. This means you can carry them with you wherever you go, providing peace of mind on long road trips, during daily commutes, or in remote areas.​ Moreover, they often come equipped with additional features. Many models include USB ports, allowing you to charge your mobile phone, tablet, or other electronic devices. Some even have built - in flashlights, which are extremely useful during nighttime breakdowns or in dark areas.​ In conclusion, a car emergency starting power supply is not just a luxury but a necessity for every car owner. It’s a small investment that can save you time, money, and a great deal of stress.

Despite their widespread use and numerous advantages, lithium - batteries face several challenges. One of the major challenges is the limited supply of critical raw materials. Lithium, cobalt, and nickel, which are essential for battery manufacturing, are concentrated in a few regions of the world. This creates geopolitical and supply - chain risks. Additionally, as the demand for lithium - batteries continues to grow, there are concerns about the availability and cost of these raw materials. Another challenge is the safety of lithium - batteries. Although significant progress has been made in safety features, there have still been incidents of battery fires and explosions, especially in high - energy - density applications. Ensuring the safety of lithium - batteries in all operating conditions is a top priority for manufacturers and researchers. However, the future prospects of lithium - batteries are still bright. Continued research and development are expected to overcome these challenges. New battery chemistries and manufacturing processes are being explored to reduce the reliance on scarce raw materials and improve safety. As the technology matures and economies of scale are achieved, the cost of lithium - batteries is likely to continue to decline, further expanding their applications in various industries.

With the increasing penetration of renewable energy sources such as solar and wind power, energy storage has become a critical component of the power grid. Lithium - batteries are playing a leading role in this area. Solar panels generate electricity during the day when the sun is shining, and wind turbines produce power when the wind is blowing. However, these energy sources are intermittent. Lithium - batteries can store the excess electricity generated during peak production periods and release it when the renewable energy generation is low or when the demand for electricity is high. In a residential solar - energy system, a lithium - battery can be installed to store the electricity generated by the solar panels. This allows homeowners to use the stored energy at night or during cloudy days, reducing their reliance on the grid. On a larger scale, utility - scale lithium - battery energy storage systems are being deployed to balance the power grid. They can help regulate voltage and frequency, and also provide backup power during grid outages. The use of lithium - batteries in renewable energy storage not only improves the reliability and stability of the power grid but also promotes the integration of more renewable energy sources, moving us closer to a clean and sustainable energy future.

The field of lithium - battery technology is constantly evolving, with researchers and engineers making significant advancements to improve battery performance. One of the key areas of research is increasing the energy density of lithium - batteries. Higher energy density means that the battery can store more energy in a smaller and lighter package. This is particularly important for applications such as electric vehicles, where a longer driving range is desired without adding excessive weight. New cathode and anode materials are being developed, such as solid - state electrolytes, which have the potential to significantly increase energy density while also improving safety. Another area of focus is fast - charging technology. Consumers today expect quick charging times for their electronic devices and electric vehicles. Researchers are working on developing battery chemistries and charging algorithms that can allow for faster charging without degrading the battery's lifespan. Some new lithium - battery designs claim to be able to charge to 80% capacity in less than 30 minutes. In addition, efforts are being made to improve the lifespan of lithium - batteries. By understanding and controlling the degradation mechanisms, such as the formation of the solid - electrolyte - interface layer, scientists are developing strategies to extend the number of charge - discharge cycles a battery can undergo. This will reduce the cost of ownership for users and also contribute to a more sustainable battery ecosystem.

As the demand for lithium - batteries grows exponentially, it is essential to consider their environmental impact. On one hand, lithium - batteries play a significant role in reducing greenhouse gas emissions. In the transportation sector, electric vehicles powered by lithium - batteries produce zero tailpipe emissions compared to traditional gasoline - or diesel - powered vehicles. This helps to mitigate air pollution and combat climate change. However, the production of lithium - batteries also has some environmental drawbacks. The extraction of lithium, cobalt, and other critical minerals used in battery manufacturing can cause environmental damage. Lithium extraction often involves large - scale mining operations that can lead to water pollution, soil degradation, and habitat destruction. Additionally, the refining process of these minerals requires a significant amount of energy, which may be sourced from fossil fuels in some regions. Another concern is the disposal of used lithium - batteries. If not properly recycled, these batteries can release harmful chemicals into the environment. However, efforts are being made to develop efficient recycling technologies. Recycling lithium - batteries can recover valuable metals such as lithium, cobalt, and nickel, reducing the need for virgin mining and minimizing environmental impact. In conclusion, while lithium - batteries offer great potential for a sustainable future, it is crucial to manage their entire life cycle, from raw material extraction to disposal, in an environmentally responsible manner.

The automotive industry has witnessed a revolutionary shift with the increasing adoption of lithium - batteries. Electric vehicles (EVs) and hybrid electric vehicles (HEVs) rely heavily on lithium - ion batteries to store and supply electrical energy. In electric vehicles, lithium - batteries serve as the primary energy source. They power the electric motor, which drives the wheels. The high energy density of lithium - ion batteries allows EVs to achieve longer driving ranges. For example, some modern EVs can travel over 400 miles on a single charge, making them a more practical alternative to traditional internal - combustion - engine vehicles. Hybrid electric vehicles, on the other hand, combine an internal - combustion engine with an electric motor and a lithium - battery. The battery can assist the engine during acceleration, provide power for idling stop - start systems, and capture energy during braking through regenerative braking. This not only improves fuel efficiency but also reduces emissions. Moreover, lithium - batteries in cars are not only used for propulsion. They also power various auxiliary systems such as the vehicle's infotainment system, air conditioning, and lighting. As the technology continues to improve, the cost of lithium - batteries is decreasing, making electric and hybrid vehicles more affordable and accessible to a wider range of consumers.

　　Lithium-batteries have become an integral part of our modern lives,powering everything from smartphones to electric vehicles.But how do they actually work? 　　At the heart of a lithium-battery is the movement of lithium ions.In a typical lithium-ion battery,during charging,lithium ions are extracted from the positive electrode(cathode),pass through an electrolyte,and are inserted into the negative electrode(anode).This process is accompanied by the flow of electrons through an external circuit,creating an electrical current.The most common cathode materials include lithium-cobalt-oxide,lithium-iron-phosphate,and lithium-nickel-manganese-cobalt-oxide.Each material has its own characteristics in terms of energy density,power output,and cost. 　　When the battery is discharging,the process is reversed.Lithium ions move back from the anode to the cathode,and electrons flow back through the external circuit to power the device.This reversible ion-transfer mechanism allows lithium-batteries to be recharged multiple times. 　　However,over time,the performance of lithium-batteries degrades.Side reactions can occur at the electrodes,leading to the formation of a solid-electrolyte-interface(SEI)layer.This layer can grow and impede the movement of lithium ions,reducing the battery's capacity and overall performance.Understanding these fundamental working principles is crucial for further improving the performance and lifespan of lithium-batteries.

Do you know what the three major technologies of new energy vehicles are? These three technologies are respectively compared to the heart, muscles, and brain of new energy vehicles. They are respectively batteries, motors, and electronic control technology.   Known as the heart of new energy vehicles is the battery. What kind of range can a new energy vehicle have? The battery played a decisive role. Known as the muscle of new energy vehicles, the electric motor can determine the power, performance, and driving attributes of a new energy vehicle. Known as the brain of new energy vehicles, it is electronic control technology that enables a new energy vehicle to work systematically with both a battery and an electric motor.   From this perspective, battery, motor, and electronic control technology are the three major obstacles for new energy vehicles. If a car company can overcome these three mountains, it will inevitably achieve brilliant results in the research and development of new energy vehicles. But then again, these three major technologies of new energy vehicles are not so easy to overcome. From the perspective of batteries, what type of battery is more environmentally friendly, fast charging, and has a longer range for new energy vehicles? Is it a common pure electric vehicle or a hybrid vehicle? Or fuel cell electric vehicles? There doesn't seem to be a unified answer. There are many types of new energy vehicles, such as pure electric, range extender electric, hybrid and fuel cell electric, as well as hydrogen powered vehicles, and so on.   In the field of pure electric vehicles, people rely solely on a battery as the energy storage power source for new energy vehicles. It can provide electrical energy to the electric motor through the battery and convert it into kinetic energy, thereby propelling the car to run quickly. In the contemporary market, the types, styles, and properties of rechargeable batteries for pure electric vehicles are complex and varied. The common rechargeable batteries for pure electric vehicles are mainly lead-acid, nickel cadmium, nickel hydrogen, and lithium-ion batteries. These batteries can provide power for new energy vehicles using only one battery as an energy storage source. But this type of new energy vehicle has been jokingly referred to by netizens: it has a characteristic that cannot be compared to gasoline cars, which is that when it burns, its momentum is even more majestic. Even if we use a fire extinguisher at this time, it has no effect. Although this statement is a bit exaggerated, its storage power source is relatively single, so its service life is shorter. Should we question its safety? Everyone should measure it themselves.   From the perspective of electric motors, there are currently only 7 common types of engines for new energy vehicles. According to their structure and working principle, they can be further divided into three categories: DC motors, asynchronous motors, and synchronous motors. The generators installed in both gasoline and new energy vehicles are generally not too cheap. Because according to its structure and working principle, the manufacturing cost of DC motors is relatively high, as it contains many scarce resources such as rare earths, ferrites, and so on. The rotor speed of asynchronous motors is relatively low, while the rotor speed, frequency, and rhythm of synchronous motors tend to stabilize. So from the perspective of production and manufacturing, as well as the research and development, materials, and energy involved, if new energy vehicles want to last longer, have better comfort, more comprehensive performance, and higher recycling value The motor it is equipped with is definitely not cheap, so the factory price of this type of new energy vehicle may be a threshold for some audiences.   In addition, electronic control is the regulatory center that can control many functions of new energy vehicles, and it is also the key to determining the operating status of the entire new energy vehicle. It can also monitor and analyze the battery status, so as to monitor and diagnose the safety of the battery in real time, and manage the control of the vehicle's capabilities in a timely manner.   Compared with the three technologies, although they are all one of the three major technologies of new energy vehicles, the two major barriers of batteries and motors are probably already making many ordinary users fearful of new energy vehicles. So how long do you think it will take for the global new energy vehicle market to enter a relatively complete, safe, and intelligent era?

1、 Determine the type and condition of the roof Identifying roofs: The first step in identifying roofs is to have a very intuitive judgment, which is to identify the type of roof, whether it is a flat roof, a sloping roof, or a metal roof, as well as the composition of the roof, whether it is concrete, tiles, ceramic tiles, or exposed whole materials.   Determine the conditions for roof construction 1. Utilization area: Firstly, determine how much usable area there is on the roof, as usable area directly determines the installed capacity of the photovoltaic system. Secondly, the orientation of the roof is best to face south, as we are in the Northern Hemisphere and the electricity generation is high when facing south, which is the most ideal way to receive solar radiation. It can also be slightly biased towards the east or west, usually within a few degrees or around 10 degrees, and can be controlled within 1% of the power generation loss, which is also acceptable. 2. Obstruction: Obstruction has a crucial impact on solar power generation systems, including the obstruction of buildings and the presence of tall trees around them that affect lighting 3. Waterproof: To determine the waterproof condition of a roof, it is important to check if there is a very good waterproof layer on the roof. If a building does not have a good waterproof system, it may not be able to meet the functional requirements of the roof during its lifespan. 4. Pattern and anti-corrosion are basic requirements for the roof: whether the type of metal roof can be installed should be judged first, and anti-corrosion should pay attention to the anti-corrosion effect of the anti-corrosion paint on the metal roof. 5. Load bearing capacity: The photovoltaic system should be built on the roof. If the roof's load-bearing capacity cannot meet the requirements of photovoltaic construction, this project will not be established. The safety of photovoltaic systems and building safety includes fire prevention, lightning protection, and maintenance channels, and all contact points must be effectively protected. Lightning protection should be integrated with building lightning protection, and maintenance channels must be reserved for safety during maintenance.   2、 Tips for installing solar panels in sloping roof photovoltaic systems 1. The roof tiles on the sloping roof are used as decorative materials for the roof, and the solar panels are hung on the roof. How was it hung? When selecting the structure, there are two characteristics for the installation method: 1. Photovoltaic modules are mainly installed in a sloping overhead manner. The photovoltaic array is laid parallel to the roof, and the support adopts a steel embedded part dot matrix fixed crossbeam; 2. The vertical distance between the photovoltaic modules installed on the slope support and the roof meets the requirements for installation and ventilation clearance (the overhead distance is generally 150-200mm). The installation method of the bracket should pay attention to connecting the hanging tile strip and the water running strip to the fixed tile. The second is the form of horizontal tiles, because the ceramic tiles are glued to the tiles through concrete underneath, without any water running strips, and can only be made through concrete. As a new material, the roof with oil felt tiles is gradually being applied more and more, because if the oil felt tiles are removed and restored, they will leak if not controlled properly. So, the method used is to increase the connection position at the fixed point. The oil felt tile has a certain thickness, which forms a certain space. Before and after fixing, it should be filled with sealant to avoid the hidden danger of water leakage.   3、 The waterproof layer of flat roof photovoltaic system is crucial The structural selection of a flat roof can be based on the actual construction method of the roof finish, and the corresponding support system can be chosen. The support system generally consists of four parts: columns, foundations, inclined beams, and crossbeams. The battery components are connected to the crossbeam through fasteners. (Weight: 0.35~0.50kN/㎡) Installation inclination angle: The inclination angle corresponding to the maximum annual power generation in the local area is used as the installation inclination angle of the bracket (theoretical calculation value); Common forms of building structures: cast-in-place concrete frame and floor slab, steel structure+cast-in-place concrete floor slab, brick concrete structure+prefabricated floor slab; Common roof finishes: waterproofing membrane, cement mortar protective layer, ceramic tiles. The installation method of a flat roof bracket is U-shaped steel, which is a very thin thin-walled profile or aluminum alloy profile. These two materials have lower cost, higher strength, stable structure, and heavier weight for steel profiles, and higher cost and lighter weight for aluminum alloy profiles. Compared to aluminum profiles, steel profiles have a lower cost of about 0.2 yuan/watt.   4、 The influence of steel plate type on the design of color steel roof photovoltaic system Color steel tiles are generally used in household factories or large industrial plants. The difference between its installation method and sloping roofs lies in the installation method of the supports. The color steel roof is supported by a fixture on top of the color steel plate. Its function is to install at an angle that follows the slope of the roof. If the structural bearing capacity of the roof can be met, the inclination angle can be raised to increase the installation angle. Common roof panel systems include vertical edge interlocking, vertical locking edge system, and profiled steel plate system (single or sandwich). In summary, the precautions for installing photovoltaic roofs include the type of roof and the conditions available for construction, as well as the selection of installation characteristics for different types of roofs, avoiding installation hazards, selecting suitable materials, reducing costs, and expanding profits.