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28
2022-07
Tesla catches fire and spontaneous combustion, The safety of ternary battery needs to be improved
On July 22,a Tesla Model X crashed into a telephone pole in Taiwan and caught fire.Fortunately,no one was injured. Pictures from the scene showed that the front half of the vehicle had been completely damaged,apparently by a burning battery pack.The battery pack combustion can be divided into short circuit,charge and discharge overload and high temperature.Combining with the field conditions,it can be judged that the battery pack overfire is caused by short circuit caused by impact. In the acupuncture experiment,the NCM battery caught fire,while the LFP battery only smoked after acupuncture. This is because lithium iron phosphate is more resistant to high temperature than teradic lithium.The thermal runaway of lithium iron phosphate is about 800℃,while the thermal runaway of teradic lithium only needs 200℃. The NMC battery in the accident was the main cause of the fire after the accident.
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28
2022-06
High rate battery
What is a high rate battery Before understanding the high-rate cells, we must first understand the high-rate. Compared with the ordinary rate, the high-rate represents the charging and discharging capacity of the lithium battery. The high-rate battery is divided into discharge rate and charging rate. The rate, "C" is used to represent the ratio of the size of the battery charge and discharge current, that is, the rate. Such as 280Ah battery, 0.5C means 140A, 1C means 280A, the same. The difference from ordinary batteries Compared with ordinary batteries, the biggest feature of high-rate batteries is that the charging speed is faster. If ordinary batteries are fast charged, it is easy to cause lithium deposition in the negative electrode, resulting in accelerated battery performance degradation. In severe cases, it can cause an internal short circuit in the battery, resulting in a fire and explosion. . It only takes 25 minutes for a high-rate battery to be fully charged at 3C, and it takes more than 80 minutes to charge an ordinary battery at 1C. As shown in the figure below, the charging time can be saved by more than 60%. Precautions for high rate cells Generally, a new high-rate battery needs to be activated. After the battery is placed for a period of time, it will enter a dormant state. At this time, the capacity is lower than the normal value, and the use time is also shortened, so it needs to be activated. The activation method of lithium battery is very simple, as long as 3 to 5 normal charge-discharge cycles can be used to activate the battery and restore its normal capacity. High-rate batteries that will not be used for a long time should be stored in a cool and dry place in a half-charged state. It is dangerous to store the battery fully charged, and the battery may be damaged and rendered useless when stored without it. During the storage process, every 3 to 6 months, a charging cycle should be completed and a power calibration should be done. Finally, let's introduce our high-rate cells: Capacity: 25~100Ah; Charging rate: 2~3C; Discharge rate: 3~6C; Strong low-temperature discharge capability, supporting discharge at temperatures as low as -30°C; It can be applied to high power density applications such as engine starting, mining machinery, heavy vehicles, electric locomotives, charging stations, UPS, and energy storage.
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24
2022-05
Truck Air Conditioning Power Brings Summer Coolness
Working conditions for outdoor truck drivers are getting worse as hot weather approaches. How to stop for a long time and wait for the driver to need air conditioning work? ·Always keep the engine running?No!Emitting too many pollutants,which is not allowed in some countries; ·What about starting battery power? No, it provides only a limited amount of power,and running out of power without being able to start the engine is a major headache for the driver How to do?Fortunately,after some engineering research and discussion,we were able to attach an additional lithium iron phosphate power supply to the truck's air conditioning system. Compared with the original lead-acid power supply,our lithium iron phosphate power supply has a longer life and better safety.It can discharge continuously under the condition of-20~50℃and support the continuous operation of air conditioning for no less than 6 hours. What's important is that it's easy to use,like a lead-acid battery,by simply connecting the battery to it and recharging it with the engine when it's low on power.In use,we provide two practical solutions,one is to connect the original lead acid power supply in parallel(because the voltage of the two independent power supply is the same),which can increase the capacity of the power supply system;The other is to replace lead-acid batteries directly,which is safer. If you need batteries,please feel free to contact us.
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14
2022-03
What is the Third Power of New Energy Vehicles
The big three in new energy vehicles includes drive motor, EV battery and electronic control system(VCU).The control system is shown in the following figure: Drive Motor The drive motor is the main executive body of the vehicle,and its characteristics determine the main performance index of the vehicle,which directly affects the power,economy and comfort of the vehicle.The drive motor of new energy vehicles is generally a three-phase AC synchronous motor. Power Battery The power battery is a chemical power source that provides electrical energy to the high-voltage power circuit.It is generally composed of many single cells in parallel and then in series,and is controlled by the battery management system BMS to ensure the safety and stability of the power battery.The current application The most widely used are lithium iron phosphate batteries and ternary lithium batteries. Electronic Control System The electronic control system is the core system of the new energy vehicle.It is responsible for receiving various operating instructions from the driver during the driving process of the vehicle,diagnosing and analyzing the status of the vehicle and its components,making comprehensive judgments,and sending control instructions to the controller of each component to make The whole vehicle drives safely according to the driver's intention. In daily life,the most frequent contact with us is the power battery.We charge and discharge the car every day,but who would have thought that the power battery is composed of standard cells. The quality of the power battery is directly related to the owner's experience.After all,in the process of driving,if there is a problem with the battery,no one will not explode.At present,the batteries sold by our company have TUV,UL,UN38.3,MSDS,CCS certification,which have great advantages in terms of safety and charging and discharging performance. And for small retailers,we are more willing to customize modules or battery packs to better satisfy consumers'shopping experience.
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13
2024-08
Happy Ending : Annual Meeting
On January 25, 2021, the last working day of this year, our company held a new year meeting in the conference room of YanHuang Science and Technology Park. At the annual meeting, we start with joy and end with joy. First of all, we played a game——the wealth is rolling, which symbolizes the wealth of the new year. By rolling the cans to determine the ownership of the red envelopes, if a person is lucky enough, he can get two red envelopes at one time. It's a bug, but we're not tired of it. Then we reviewed the experience in 2021 with a video. We hurriedly immersed ourselves in work every day, but there are more than work in our life. Going out for mountain climbing, employee birthdays, and going out to dinner also add color to life, like ripples on a calm lake. Gives a bit of vitality. After that, there is a more formal part - work report. Why do I use this statement? It is because the people on stage are nervously reporting, and the audience below the stage is listening to the report and eating snacks. Maybe no one can Resist the temptation to snack. The overall market environment in 2021 is not good, and the new crown epidemic, monetary easing, and energy crisis have brought great challenges to the market. There is a saying in China that confidence is more important than gold. We believe that there will be great opportunities in the new energy industry in the future, and we are ready to embrace the sea of stars. In addition, we presented various awards to our employees, as well as cash and tablet computers to express our recognition of their work performance. Finally, the company prepared New Year red envelopes for all employees to add joy to the New Year. Finally, I wish you in front of the screen: Happy New Year!
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13
2024-08
Lithium Batteries in the Industrial Market
During the workshop,problems were examined that are related to the use of traditional lead-acid batteries,a source of dissatisfaction for many users.These problems include long charging times(8-10 hours to completely charge)and the inability to use the batteries when only partially charged.Another critical issue is high maintenance costs. Over the life of a lead-acid battery,maintenance costs may actually exceed the cost of the battery itself.They include: ·the cost of topping up the water ·the cost of removing acid and oxide built-up ·the cost of water demineralisation systems ·the cost of ventilation systems in the charging area ·the cost of the space necessary for the charging area These costs are not often taken into consideration,thus making lead-acid technology appear cheaper. Actually,if all these factors are considered,lithium on balance is economically favourable,besides offering major benefits in terms of performance and production efficiency. We Be Power Co.,LTD are focusing on manufacture batteries with outstanding characteristics: -Past very strict safety testing,such as Nail penetration,shooting test,etc.We have got the most strict certification”Mining products safety certification”,and available for underground working environment with gas. -ultra high discharge current rate:Continuous discharging current up to 10C. -High charge current rate:Continuous charging current up to 3C. -Discharge on very low temperature until-40℃. -Long cycle life up to 6000 cycles. More details please visit website: www.bepower.com.cnOr write to us: info@bepower.com.cn
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13
2024-08
Why Change From a Lead-acid Battery to a Lithium Battery?
WHY CHANGE FROM A LEAD-ACID BATTERY TO A LITHIUM BATTERY?This question is certainly the most frequently asked and is the first of a long list. I suggest we just examine the solution straight away.CHARGING THE BATTERYLead Acid battery: The charging efficiency of this type of battery is low – only 75%! A lead-acid battery needs more energy for recharging than it delivers. The excess energy is used for gasification and for mixing the acid internally. This process warms up the battery and evaporates the water inside, which results in the need to top up the battery with distilled (demineralised) water.Lead-acid recharging has severe limitations and a number of critical points. Here are the most important ones:× Fast or partial charges ruin a lead-acid battery× Charging times are long: from 6 to 8 hours× The charger does not collect full information on the battery. It only checks the voltage, and that’s not enough. Changes in temperature affect the recharge profile, so if the temperature is not measured, the battery will never charge completely in winter and will gasify too much in summer× An incorrect charger or setting reduces battery life× Poor maintenance will also reduce battery lifeLithium ion battery: Lithium-ion batteries can be “fast” charged to 100% of capacity.A lithium battery saves on your electric bill, as it is up to 96% efficient and accepts both partial and rapid charging.A lithium battery can be charged to 50% capacity in only 25 minutes.This innovative characteristic enables our customers to equip their devices with lower installed battery capacity than the capacity required with lead-acid batteries, because lithium batteries can be recharged repeatedly over a short timeElectronic systems inside the battery control the charger effectively, so it can deliver the exact current that is consistent with internal parameters (voltage, temperature, charge level, etc …). If a customer connects an unsuitable battery charger, the battery will not activate and is thus fully protected.ChargingüA lithium battery saves on electricity bill with efficiency up to 96%.üA lithium battery accepts partial charge and fast charge.üIn 25 minutes we can charge 50% of the battery.Lithium-Ion batteries are fairly maintenance free and doesn’t produce gas.This eliminates any additional costs.It works just fine.WEIGHT OF BATTERYLead Acid battery: 30Kg for kWhLithium ion battery: 6Kg for kWhOn average Lithium-Ion batteries weight 5 times less than standard lead acid battery.MAINTENANCELead acid battery: high maintenance and systems costs. Ordinary maintenance is one of the greatest costs, as it includes topping up the water, maintaining the filling system, and removing oxide from the elements and terminals.It would be a serious mistake not to take into consideration 3 other, hidden costs:＄ Infrastructure cost: lead-acid batteries release gas while they are charging and must therefore be charged in a dedicated area. What is the cost of this space, which could be used for other purposes?＄ Cost of gas disposal: the gas released by lead-acid batteries must not remain inside the charging area. It must be removed to the outside by special ventilation systems.＄ Cost of water demineralisation: in smaller companies, this cost can be included in ordinary maintenance, but becomes a separate expense for medium to large companies. Demineralisation is a necessary treatment for water used to top-up lead-acid batteries.Lithium ion battery: no infrastructure cost, no gas and no need for water, which eliminates all additional costs. The battery just works.SERVICE LIFELithium-ion batteries last 3-4 times longer than lead-acid batteries, without losing effectiveness over time.LITHIUM BATTERY100%LEAD ACID BATTERY25%SAFETY, WATERPROOFING AND EMISSIONSLead acid batteries have no safety devices, are not sealed, and release hydrogen during charging. In fact, their use in the food industry is not permitted (except for “gel” versions, which are even less efficient).Lithium batteries release no emissions, are suitable for all applications (also available in IP67) and feature 3 different control systems that protect the battery:ØAutomatic disconnection, which disconnects the battery when the machine/vehicle is idle and protects the battery from improper use by the customerØBalancing and management system which maximizes battery efficiencyØRemote control system with automatic warning of troubles and malfunctionsBALANCING WITH SAFETY, POWER DENSITY AND COST, LFP BATTERY IS THE BEST ONE!We Be Power Co.,LTD are focusing on manufacture batteries with outstanding characteristics:lPast very strict safety testing, such as Nail penetration, shooting test, etc. We have got the most strict certification ”Mining products safety certification”, and available for underground working environment with gas.lUltra high discharge current rate: Continuous discharging current up to 10C.lHigh charge current rate: Continuous charging current up to 3C. lDischarge on very low temperature until -40℃. lLong cycle life up to 6000 cycles. More details please visit website: www.bepower.com.cnOr write to us: info@bepower.com.cn
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05
2020-11
What Is LiFePO4 And Why Is It A Better Choice?
What Is LiFePO4 And Why Is It A Better Choice? All lithium chemistries are not created equal. In fact, most consumers – electronic enthusiasts aside – are only familiar with a limited range of lithium solutions. The most common versions are built from cobalt oxide, manganese oxide and nickel oxide formulations. First, let’s take a step back in time. Lithium-ion batteries are a much newer innovation and have only been around for the last 25 years. Over this time, lithium technologies have increased in popularity as they have proven to be valuable in powering smaller electronics – like laptops and cell phones. But as you may recall from several news stories over recent years, lithium-ion batteries also gained a reputation for catching fire. Until recent years, this was one of the main reasons lithium wasn't commonly used to create large battery banks. But then came along lithium iron phosphate (LiFePO4). This newer type of lithium solution was inherently non-combustible, while allowing for slightly lower energy density. LiFePO4 batteries were not only safer, they had many advantages over other lithium chemistries, particularly for high power applications. Although lithium iron phosphate (LiFePO4) batteries aren’t exactly new, they’re just now picking up traction in Global commercial markets. Here’s a quick breakdown on what distinguishes LiFePO4 from the other lithium battery solutions: Safety and stability LiFePO4 batteries are best known for their strong safety profile, the result of extremely stable chemistry. Phosphate-based batteries offer superior thermal and chemical stability which provides an increase in safety over lithium-ion batteries made with other cathode materials. Lithium phosphate cells are incombustible, which is an important feature in the event of mishandling during charging or discharging. They can also withstand harsh conditions, be it freezing cold, scorching heat or rough terrain. When subjected to hazardous events, such as collision or short-circuiting, they won’t explode or catch fire, significantly reducing any chance of harm. If you’re selecting a lithium battery and anticipate use in hazardous or unstable environments, LiFePO4 is likely your best choice. Performance Performance is a major factor in determining which type of battery to use in a given application. Long life, slow self-discharge rates and less weight make lithium iron batteries an appealing option as they are expected to have a longer shelf life than lithium-ion. Service life usually clocks in at five to ten years or longer, and runtime significantly exceeds lead-acid batteries and other lithium formulations. Battery charging time is also considerably reduced, another convenient performance perk. So, if you’re looking for a battery to stand the test of time and charge quickly, LiFePO4 is the answer. Space Efficiency Also worth mentioning is LiFePO4’s space-efficient characteristics. At one-third the weight of most lead-acid batteries and almost half the weight of the popular manganese oxide, LiFePO4 provides an effective way to make use of space and weight. Making your product more efficient overall. Environmental Impact LiFePO4 batteries are non-toxic, non-contaminating and contain no rare earth metals, making them an environmentally conscious choice. Lead-acid and nickel oxide lithium batteries carry significant environmental risk (especially lead acid, as internal chemicals degrade structure over team and eventually cause leakage). Compared to lead-acid and other lithium batteries, lithium iron phosphate batteries offer significant advantages, including improved discharge and charge efficiency, longer life span and the ability to deep cycle while maintaining performance. LiFePO4 batteries often come with a higher price tag, but a much better cost over life of the product, minimal maintenance and infrequent replacement makes them a worthwhile investment and a smart long-term solution. Check out our latest infographic with more details on what makes lithium iron batteries the best choice for your application.
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31
2021-03
Electric Mining Equipment is Poised to Power the Industry
Electric Mining Equipment is Poised to Power the Industry Traditionally dependent on fossil fuels to run key equipment, mining is known as a carbon-intensive industry. New trends, such as battery-powered underground mining equipment, are promising to disrupt that paradigm. Increasingly, stakeholders are demanding that mining companies be more responsible and sustainable. Companies are being pressured by stockholders, workers, local communities, consumers and governments to reduce greenhouse gas emissions, reduce carbon footprints, improve air quality and protect the health and safety of workers and people living near mines. Meanwhile, others in the mining value chain — such as jewelers, electronics companies, or automakers — want assurances that the minerals they’re buying are mined responsibly. With this as a backdrop, battery-powered underground mining equipment is starting to replace vehicles with diesel engines and equipment with electric motors is starting to replace those using hydraulics. Deeper reasons why companies are switching to electric mining equipment There are other reasons why the switch to electric mining equipment makes sense for many mining operations. One, for instance, is the competitiveness of the industry and the increasing need for miners and equipment to go ever deeper into the earth to extract more minerals. It follows that the deeper a mine, the more ventilation infrastructure is needed to help vent diesel emissions and keep workers safe. According to one estimate, up to 30% of an underground mine’s total operating costs go toward powering ventilation systems to maintain air quality. At some point, it becomes much less cost-effective for such operations to continue using diesel ICE — even equipment that is designed to comply with current Environmental Protection Agency emission standards — in these applications. Surface mining operations aren’t totally immune from these pressures either. Diesel-powered machines used in these operations must adhere to the same environmental regulation as construction and agricultural equipment. A cleaner, greener, safer future of mining Mining is traditionally a very carbon-dependent industry, with heavy reliance on diesel ICE to power its equipment. That reliance may be starting to change, however, driven by pressure from stakeholders to reduce carbon footprints and protect workers and communities, along with new economic pressures derived from the need to mine farther underground. Already, major OEMs are providing electric mining equipment. As new options for charging these large batteries — including renewable resources — become more widespread, expect to see a cleaner, greener, safer future of mining. We are willing to contribute to Electric Mining Equipment Our LFP cells are perfectly suited for Electric underground equipment since their outstanding features: - ultra high dischage current rate: Continuous discharging current up to 15C. - High charge current rate: Continuous charging current up to 6C. -Discharge on very low temperture until -40℃. - Safty. This is LFP cell, much more stable than NCM cell, won`t burn like NCM cell. This is very important to consumer. Our cells passed the most stringent test like Nail penetration and shooting test. -Got "Mining Products Safety Certification". Ensure safty for mining equipment. This will solve 2 very impotant difficults that electrical underground vehicles are facing now: -Safty; -Fast charge. More details please contact: kevin@be-power.cn
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31
2021-03
Electric Vehicle Revolution Goes Underground With Mine Truck
Electric Vehicle Revolution Goes Underground With Mine Truck Our LFP cells are perfectly suited for Electric underground equipment since their outstanding features: - ultra high dischage current rate: Continuous discharging current up to 15C. - High charge current rate: Continuous charging current up to 6C. -Discharge on very low temperture until -40℃. - Safty. This is LFP cell, much more stable than NCM cell, won`t burn like NCM cell. This is very important to consumer. Our cells passed the most stringent test like Nail penetration and shooting test. -Got "Mining Products Safety Certification". Ensure safty for mining equipment. This will solve 2 very impotant difficults that electrical underground vehicles are facing now: -Safty; -Fast charge. Here reports come from Bloomberg (Bloomberg) — Electric vehicles are reaching global markets far and wide — and deep. Swedish mining equipment maker Epiroc AB now aims to electrify all its underground machines within five years. The manufacturer on Wednesday launched a new range, including what it says is the largest battery-powered vehicle for mining below the Earth’s surface: a 42 ton-capacity truck that can haul blasted rock through narrow tunnels. It’s part of the company’s latest series of mobile excavators, including drill rigs and loaders, designed to cut emissions and lower energy costs for miners. Reducing the use of diesel fuel could have significant cost benefits for the industry: as much as 40 percent of an underground mine’s energy outlay is spent on powering gigantic ventilation systems to remove pollutants from tunnels. The push for electrified mining got a further boost last month from an industry lobby, the International Council on Mining and Metals, which plans to minimize the impact of underground diesel exhaust by 2025. “Next year we will start production of an 18-ton loader and we will start offering medium-sized drill rigs with battery options,” Sami Niiranen, who has been appointed to lead Epiroc’s underground equipment unit, said in Orebro, Sweden. Epiroc, which is using power packs assembled by Northvolt AB, said the upfront cost of buying a battery-powered vehicle would be about twice that of a conventional one. While this is compensated by lower fuel and energy costs down the road, the initial pain could be prohibitive. In a bid to boost sales, Epiroc will lease batteries for its new range of vehicles separately, making the initial outlay only slightly higher than for an equivalent diesel machine. Bigger, Heavier The new electric vehicles are bigger and more powerful than Epiroc’s first models that hit the market in 2016 and are used by customers including Brazilian mining company Nexa Resources. So far, they make up only a small part of sales for Epiroc, which has worked on electrification since 2013. Their best hope are new or expanding mines that aren’t already equipped with expensive ventilation systems. Cross-town Swedish rival Sandvik AB has delivered hundreds of vehicles powered by electric cables, and has plans to launch its own battery-powered machines. The Nordic companies dominate global sales of underground mining equipment, with a combined three quarters of the market. They compete with Caterpillar Inc. and Japan’s Komatsu Ltd. The International Council on Mining and Metals also aims to achieve greenhouse gas-free vehicles for surface mining by 2040. Yet the transition to electric vehicles still has some way to go. Bringing the biggest hauls of rock up steep ramps and out of the ground requires power that existing batteries are ill-equipped to supply. This has led to renewed interest in trolley systems whereby electrified trucks are connected to a power grid with overhead cables. Swedish mining company Boliden AB has a project using Caterpillar trucks and ABB Ltd. power infrastructure to haul ore from Aitik, the country’s largest open pit copper mine. Sourcing: https://tanaka-preciousmetals.com/en/elements/news-cred-20190101-04/
