battery management system (BMS)

An electric vehicle (EV) battery is a critical component that provides the necessary power to propel electric vehicles. It serves as an energy storage device, allowing the vehicle to operate without relying on internal combustion engines. Here are some key features and aspects of electric vehicle batteries: Battery Types: The most common type of battery used in electric vehicles is the lithium-ion battery. These batteries offer high energy density, long cycle life, and excellent performance characteristics for EV applications. Other battery technologies, such as nickel-metal hydride (NiMH), are also used in some hybrid vehicles, but their usage is less prevalent compared to lithium-ion batteries. Capacity and Voltage: Electric vehicle batteries come in various capacities, typically measured in kilowatt-hours (kWh). The capacity determines the amount of energy the battery can store and, consequently, the driving range of the vehicle. The voltage of EV batteries varies depending on the design and configuration of the battery pack, typically ranging from a few hundred volts to over 800 volts. Battery Management System (BMS): A battery management system is an essential component that monitors and controls various aspects of the battery, including state of charge (SOC), state of health (SOH), temperature, and cell balancing. The BMS ensures the safe and efficient operation of the battery pack by optimizing charging and discharging processes, protecting against overcharging and over-discharging, and providing accurate battery diagnostics. Charging Infrastructure: Electric vehicles can be charged through various methods, including home charging stations, public charging stations, and fast-charging networks. The charging infrastructure supports different charging speeds, such as Level 1 (120V AC), Level 2 (240V AC), and Level 3 (DC fast charging), enabling EV owners to charge their vehicles conveniently and efficiently. Range and Performance: The range of an electric vehicle is influenced by factors such as battery capacity, driving conditions, vehicle efficiency, and temperature. Advances in battery technology have led to increased driving ranges, with some electric vehicles now capable of traveling over 300 miles (480 kilometers) on a single charge. Additionally, batteries with high power output enable EVs to achieve impressive acceleration and performance comparable to conventional internal combustion engine vehicles. Battery Lifespan and Recycling: The lifespan of an electric vehicle battery depends on various factors, including usage patterns, charging habits, temperature conditions, and battery chemistry. Over time, the battery's capacity gradually decreases, affecting the vehicle's range. However, even after reaching the end of its useful life in an electric vehicle, the battery can still have residual value and be repurposed for other applications or recycled to recover valuable materials like lithium, cobalt, and nickel. Electric vehicle batteries are instrumental in the widespread adoption of electric transportation, offering a cleaner and more sustainable alternative to traditional gasoline-powered vehicles. Ongoing research and development in battery technology aim to improve energy density, charging speeds, durability, and affordability, further enhancing the viability and attractiveness of electric vehicles for consumers and contributing to a greener transportation future.

Qianhang® LiFePO4 batteries offer exceptional performance and are an ideal replacement for traditional lead batteries. They harness the benefits of lithium iron phosphate technology, ensuring the highest level of safety and durability. These batteries are designed to handle regular deep discharges while maintaining long-term usability. With their high cycle life, they excel as traction batteries. The LiFePO4 battery can seamlessly replace lead batteries such as AGM or gel batteries without requiring adjustments to the charge and discharge structures. Despite their lightweight construction, Qianhang® LiFePO4 batteries provide an impressive usable capacity, surpassing lead-acid batteries with twice the capacity. They deliver outstanding performance while remaining significantly lighter. In terms of cost-effectiveness, LiFePO4 batteries outshine lead batteries over the usage period. Lead batteries experience a significant decrease in cycle life when subjected to persistent deep discharges beyond 50%. In contrast, LiFePO4 batteries can be regularly discharged up to 90% without any issues or impact on the number of cycles. Therefore, a 100Ah LiFePO4 battery can often replace a 200Ah lead battery. Lead batteries typically lose capacity after approximately 800 charging cycles, while LiFePO4 batteries can endure up to 3000 charging cycles and continue performing well for the following 7000 cycles. In conclusion, Qianhang® LiFePO4 batteries are known to outlast three lead batteries, even under intense usage. Furthermore, when considering weight, lithium batteries are the preferred choice compared to lead batteries. A conventional 100Ah lead battery weighs around 32 kilograms, whereas a LiFePO4 battery of the same capacity weighs a mere 14.5 kilograms, resulting in a weight reduction of over 50%. Replacing a 200Ah lead battery with a 100Ah lithium battery doubles the weight savings. Choose Qianhang® LiFePO4 batteries to experience the advantages of advanced lithium technology and enjoy enhanced performance, extended cycle life, and reduced weight. Product Advantages - High Security Our LiFePO4 batteries offer a range of advantages, with a strong focus on high security and sustainability. Here are the key features that set our batteries apart: Cell Safety Performance: Our batteries undergo rigorous testing, including heating, short circuit, nail, and extrusion tests. They are designed to ensure safety, with no risk of fire or explosion. Modular Design: The modular construction of our batteries provides superior anti-knock and excellent vibration resistance, ensuring durability and reliability. Battery Pack Heat Radiation: Through simulation testing, our batteries have been proven to have 7 degrees Celsius lower heat radiation compared to other battery types, enhancing overall safety. Warranty: We offer a manufacturer's warranty of 5 years or 10,000 hours, demonstrating our confidence in the quality and longevity of our products. Professional Wiring Harness: Our batteries are equipped with high-quality wiring harness equipment and undergo thorough testing. This ensures stable and reliable performance throughout the battery's lifespan. Automotive-Grade Modular Design: Our batteries are designed with automotive-grade modular concepts, making them highly versatile for various applications. Environmentally Friendly: Unlike batteries that contain environmentally unfriendly heavy metals like cobalt, our LiFePO4 batteries are resource-efficient and do not pose environmental risks. Furthermore: Qianhang lithium forklift batteries stand out in the global market, offering advanced core technologies that revolutionize the forklift, material handling equipment, and warehousing sectors. Our batteries utilize 3000W welding power aluminum bars, and low-voltage wiring harnesses are manufactured using ultrasonic or laser welding. This ensures higher flow capacity and increased reliability. Our batteries are compatible with modular wiring harness designs, including FPCB flexible cables and AWG wiring harnesses. The modular plug system simplifies the assembly process and improves production efficiency. The module bracket design incorporates cell expansion gaps, promoting better cell life and heat dissipation. With an automotive-grade insulation design and the inclusion of module covers and power insulation platforms, our batteries offer higher insulation levels. This makes them suitable for high-voltage scenarios. Choose our LiFePO4 batteries for their unparalleled security features, advanced technologies, and commitment to sustainability. They are a reliable and efficient power solution for a wide range of applications. Suitable for Extreme Cold: Qianhang® Low-Temperature Series Introducing the groundbreaking Qianhang® Low-Temperature series forklift battery, designed to operate flawlessly even in arctic conditions as low as -30 degrees Celsius. Unlike other LiFePO4 batteries that cease to function at 0°C, our advanced technology ensures reliable performance in the harshest cold environments. Key Features: Heating Management: The Qianhang battery pack incorporates a heating management system that efficiently raises the temperature from -20°C to 0°C in just 25-30 minutes during the discharge process. This enables consistent and reliable power output in extremely low temperatures. Durable Construction: Our batteries feature a casing that is not glued shut or welded, allowing for easy exchange of individual components. This ensures flexibility and cost-effectiveness in maintenance and repairs. Heating and Condensing Systems: Qianhang Li-ion batteries are equipped with heating and condensing systems specifically designed for lifts operating in cooler or freezer environments. These systems maintain the rated capacity of the battery and enable regular discharge even in extremely low temperatures. Compared to lead acid forklift batteries, our Li-ion batteries offer the advantages of Li-ion technology while ensuring safety. Energy-Efficient Heating Elements: The system incorporates two energy-efficient heating elements that are fully controlled by the battery management system (BMS). The BMS maintains the cell temperature just above freezing point by regulating the charging current. This ensures that the battery remains usable under extreme cold conditions. Optimal Solution: The Qianhang® Low-Temperature series is the perfect choice for applications in colder environments or when the battery needs to be installed in unheated parts of the vehicle, such as the battery compartment. Experience reliable and efficient performance even in freezing temperatures with the Qianhang® Low-Temperature series. Our advanced heating management system and robust construction make it the ultimate solution for demanding cold environments.