48V lithium battery pack - Things may get you interested

Lithium ion battery pack, also known as battery module, is a manufacturing process for lithium-ion batteries, which refers to the connection of multiple lithium-ion single cell groups in parallel and series, and considers issues such as system mechanical strength, thermal management, BMS matching, etc.

Its important technologies are reflected in overall structural design, welding and processing process control, protection level, active thermal management system, etc. Connecting 15 lithium iron phosphate cells or 13 ternary lithium cells in series to form a specific shape according to customer requirements is called a 48V lithium battery pack.

Features of 48V lithium battery pack

Ultra long lifespan, capable of cycling more than 6000 times, with a service life of over 10 years.

Excellent working temperature, the environmental working temperature of 48V lithium-ion battery pack can reach -20~60 (recommended temperature; -15~50), greatly reducing equipment purchase and electricity costs.

Adding a battery detection unit to the 48V lithium-ion battery pack can accurately detect battery voltage, temperature, capacity, and other conditions in real time, and transmit them to the drone in a timely manner through the communication system, which can fully improve the safety of the product.

The battery casing is made of alloy material, which has superior impact resistance, high and low temperature resistance, effective flame retardancy, and can ensure that the lithium-ion battery pack always maintains effective protection under external impact. The external folding handle is convenient to carry.

Types of 48V lithium battery pack

Power 48V lithium battery pack

The power type 48V lithium battery is mainly used as a battery pack for large equipment such as electric vehicles and power tools, with high performance requirements, high energy density, and long cycle life. Here is the top 10 power battery pack companies in China for your reference, if you are interested in purchasing the power battery pack for your electric vehicle.

Energy storage 48V lithium battery pack

Energy storage 48V lithium battery pack are mainly used in household energy storage systems, solar power generation systems, and other scenarios. Their energy density is relatively low, but their cost is low.

The price of 48V lithium battery pack

The price of 48V lithium battery packs is influenced by many factors, and the following are a few points to pay attention to.

Brand

At present, there are many brands of 48V lithium batteries on the market, and the prices of different brands also vary. For specific details, please refer to

Capacity

The capacity of a 48V lithium battery refers to the amount of energy that the battery can store, usually expressed in ampere hours (Ah). The larger the battery capacity, the higher the price. Generally speaking, the capacity of household energy storage lithium batteries ranges from 10Ah-50Ah, while the capacity of industrial power lithium batteries ranges from 50Ah-300Ah.

Materials and craft

The material and production process of 48V lithium batteries have a significant impact on their performance. At present, lithium cobalt oxide and ternary materials are mainly used as positive electrode materials in the market, while graphite is used as negative electrode material. In addition, different production processes can also affect the performance and cost of batteries. High end batteries typically use more advanced technology and are relatively expensive.

If you want to know more about the lithium battery prices, we have discussed before for your information.

Advice when choosing 48V lithium battery pack

When choosing a 48V lithium battery pack, you can refer to the following points to select a suitable and high-quality battery pack.

Quality raw materials

High quality separator materials can effectively isolate the positive and negative electrodes of the battery, preventing direct contact between the positive and negative electrodes and causing short circuits. Even when the battery is subjected to external impact or internal pressure changes, it can maintain good insulation performance and reduce safety risks.

Some 48V lithium batteries use lithium iron phosphate as the positive electrode material, which has relatively high stability and safety. Lithium iron phosphate batteries have good thermal stability in high temperature environments and are less prone to thermal runaway; Meanwhile, its safety performance under overcharging and discharging conditions is also superior to some other lithium battery materials.

Legitimate brand and production process

Nowadays, 48V lithium batteries produced by legitimate major brand manufacturers in the market usually adopt advanced production processes and strict quality control standards. For example, in the selection of battery cells, high-quality and stable materials will be chosen; In the battery assembly process, mature packaging technology is used to ensure the stability and safety of the internal structure of the battery.

Security protection design

• Over-charge protection: Built in overcharge protection circuit, when the battery reaches the set voltage limit during charging, it will automatically cut off the charging current to prevent dangerous situations such as overheating, bulging, and even fire and explosion caused by overcharging of the battery.

• Over-discharge protection: Equipped with an over discharge protection mechanism, it stops discharging when the battery reaches the set voltage limit, avoiding damage to the internal structure of the battery caused by excessive discharge, which affects battery life and safety. Therefore battery discharge capaicty is an impotant factor when choosing a battery pack.

• Short circuit protection: When a battery experiences a short circuit, the short circuit protection device will quickly activate, blocking the current path and reducing the risk of safety accidents such as fires caused by the short circuit.

Incorrect use of 48V lithium battery pack

Overcharging and over discharging

If users use mismatched chargers or overcharge for a long time, it may cause the internal pressure and temperature of the battery to rise sharply, leading to dangers such as battery swelling, leakage, and even explosion. Excessive discharge may cause damage to the internal structure of the battery, reducing its safety and lifespan.

External impact and damage

In daily use, if a 48V lithium battery is subjected to severe external forces such as impact, compression, or puncture, it may damage the internal structure of the battery, leading to short circuits between the positive and negative electrodes, membrane rupture, and other safety issues. For example, in some traffic accidents, the lithium battery of an electric bicycle may catch fire and burn after collision.

High temperature environment

Prolonged exposure to high temperatures, such as exposing lithium batteries to sunlight or placing them in high-temperature cars during hot summers, can accelerate chemical reactions inside the battery, causing it to rise in temperature and increasing safety hazards. In addition, the battery itself generates heat during the charging and discharging process, and if the heat dissipation conditions are poor, it may also lead to high temperatures and cause danger.

Unauthorized modification

Some users modify 48V lithium batteries without authorization in order to pursue higher performance or range, such as replacing larger capacity cells or changing the connection method of the battery. This unauthorized modification behavior often damages the original safety design and performance balance of the battery, which can easily lead to safety accidents.

Conclusion

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