Generally, the temperature limit of mobile phone lithium batteries is 40 degrees Celsius, 40-60 degrees Celsius. If the time is not too long, there will be no problem. Lithium batteries can also be specially customized to withstand high temperatures, and their high temperature performance will be much better.
The temperature limit set for cell phone lithium batteries is generally 40 to 60 degrees. Batteries are generally marked with explosion-proof valves, and high temperature resistant lithium batteries can withstand temperatures of up to 800 degrees. Generally, lithium batteries are tested to withstand high temperatures of 200 degrees, 500 degrees and 800 degrees, but they are generally not exposed to such high temperatures in daily life.
For lithium batteries, there is nocurrently no clear theory in the industry to support the inevitable relationship between internal resistance, discharge platform, life, capacity, etc. under various temperature performance. Calculation formulas and relevant mathematical models. are still under study. Generally speaking, lithium batteries are not sensitive to temperatures between 0 and 40°C. However, once the temperature exceeds this range, the lifespan and capacity will be compromised.
In order to ensure the lifespan, safety and reliability of lithium batteries, advanced protection management systems are used in high temperature resistant lithium battery packs to prevent overcharging , overdischarge, high temperature operation and low temperature. temperature charging or short circuit be damaged or even cause safety problems.
Detailed information:
Be sure to pay attention to the following points when purchasing.
1. Is the capacity clearly marked? Batteries without clearly marked capacity (such as 1000 mAh or 1000 mAh) are most likely using lower quality batteries or recycled batteries. Many inexpensive batteries on the market are made from recycled batteries. Although they are cheap, their lifespan is short and their unstable quality can damage the phone.
2. Is there guaranteed standby time? Standby time is the duration of continuous use from the time the battery is installed in the phone until the next charge. Generally, batteries sold in the market cannot guarantee standby time to customers. This is because the quality of the batteryis unstable. Many cheap batteries use poor quality battery cores, so the standby time is very short.
3. Whether to install a safety protection circuit board. Without a protective circuit board, the lithium battery may deform, leak and explode. Faced with fierce competition for lower prices, each company searches for cheaper protective circuit boards or even omits this device, leaving the market flooded with lithium batteries that are at risk of exploding. Consumers cannot determine whether there is a protective circuit board from its appearance, so it is better to choose a reputable trader to purchase it.
Which has better prospects, sodium battery or lithium battery?
The battery bottleneck makes everyone not does not want to buy electric cars. With updating and iteratingof electric energy vehicle battery technology, the development of lithium batteries is likely to move from the red flower double stick to the community leader. However, onlyIt goes up. Limited by its own performance, cost-effectiveness and other reasons, there is still a long way to replace the big brother lead-acid battery, and the big brother lead-acid battery is also constantly making breakthroughs.
1. Let's start with lead-acid batteries:
Heirloom secrets of lead-acid batteries
1: Gold bell cover and iron cloth liner (tough!) The lead boss -acid always let him be strong and let him be strong, and the breeze blows on the hills. He lets others do what he wants, and the bright moon shines on the river as a principle. Lead-acid batteries are easy to maintain. You can knock them over, fix them a little and continue to use them.
2: Price ofu cabbage (cheap!) The reason why the main boss was able to dominate the battery company for many years and occupy the position of boss is entirely due to this reason! Cheap, in addition to being cheap, it's cheap.
3: Recyclable lead-acid batteries (recyclable and reverse repair) have their own recyclability capabilities. Once worn out, you can go to an electric vehicle store to exchange them for new ones. exchange them for a new set of batteries by paying the price difference, minimizing losses is a great benefit for users.
Now that we have talked about the secrets, let's also look at the shortcomings of lead-acid batteries: large size and weight, limited battery capacity and short lifespan of lead-acid batteries. charged and discharged within 400 times. The memory has a lifespan of approximately two years.
The ancestral secrets of lithium batteries
1: The ancestral skill in light (lightness, small size) acquired since childhood is compared to lead-acid batteries of the same Capacity on the market. The volume of lithium battery is 2/3 of the volume of lead-acid battery, and the weight is about 1/3 of the weight of lead-acid battery. Lithium batteries of the same volume have a higher capacity than lead acid batteries. Reducing weight increases the range of electric vehicles by around 10%.
2: Health-preserving and durable (increased service life) lithium batteries are well-known for their health-preserving principles. The average lifespan of a lithium-ion battery is about a year, or about 1.5 times. longer than that of a lead acid battery. It can be charged and discharged more than 500 times. No memory to use, strong shock resistance.
3: The ancestral Qigong breathing method (resistant to surcharge, good resistance to charge and discharge) the lithium battery has opened the eight extra meridians since childhood, so at normal temperature, the lithium battery can be continuously charged for 48 hours Accidents such that battery expansion, leakage and rupture may occur, but the capacity remains above 95%. And with a special charger, it can be charged and discharged quickly.
Although lithium batteries have many advantages, their disadvantages are also more obvious.
The production cost of lithium batteries is high, production equipment is expensive, and labor costs account for about 40% of production costs. The price is about three times that of lead-acid batteries. At three times the price, it's not great value for money, and it seems rather flashy. Additionally, lithium batteries are not recyclable. AOnce worn out, they can only be thrown away or buried after thousands of years. future generations will dig them up. It's an antique when it comes out.
The most important problem is that lithium batteries pose potential fire and explosion hazards, especially when consumers are unknowingly deceived by profiteers and purchase substandard lithium batteries . In electric vehicles, this sealing condition is not so. too good, it is easy for moisture to cause poor contact and other reasons, which may cause safety hazards. But now, lithium battery technology's technical performance is also constantly improving, and high safety materials are also used. Existing security risks may just be unnecessary concerns on the part of the publisher. Maybe it won't be long before the world ofs lithium batteries.
Which is better: a lithium battery or a lead acid battery? At this point, it can only be determined based on demand.
Sodium batteries have good prospects. Compare the following aspects.
Raw material price comparison:
Sodium-ion batteries have abundant raw materials and domestic resources are relatively abundant; Lithium resources for lithium-ion batteries are sufficient but unevenly distributed.
The current price of lithium carbonate, the raw material of lithium-ion batteries, is 199,000 yuan/ton, while the price of sodium carbonate, the raw material of sodium-ion batteries, is only 3,000 yuan/ton. tonne. Compared with lithium-ion batteries, one of the main advantages of sodium-ion batteries is that the raw materials are widely distributed and cheap.
Comparison of tCycle times:
The cycle times of lithium iron phosphate batteries are about 3,000 to 4,000 times, the cycle times of ternary lithium batteries are about 2,000 times, and the cycle times of cycle time Sodium-ion batteries are about 2000+ times, which is basically equivalent to lithium iron phosphate batteries, and the low temperature performance of sodium batteries is significantly higher than that of lithium batteries.
Safety comparison:
The safety of lithium batteries produced by common manufacturers is acceptable, but be careful to avoid accidents such as high temperatures and violent impacts when using them. use.
On the other hand, sodium-ion batteries have a higher internal resistance than lithium-ion batteries, generate less instantaneous heat in the event of a short circuit, have a lower temperature rise and are safer. Additionally, sodium-ion batteries can operate nnormally in a temperature range of -40°C to 80°C and provide excellent high and low temperature performance.