Apr 13, 2022 | Company News
24V golf cart battery characteristics
1, High capacity and high energy density
2, Low self-discharge and capacity storage
3, Lead-calcium alloy is used for the plate grid, so that the water loss is small and maintenance-free.
4, High conductivity terminal is conducive to high current discharge of the battery
5, Valve control design, safe and reliable in use
6, Plate grid design and lead paste formula, improve the battery charge acceptability
7, Adopting colloidal electrolyte to prevent electrolyte delamination during use
How to save electricity with 24V golf cart battery
Electric golf cart power saving can increase the driving range, electric golf cart power saving needs to pay attention to the following points.
1, Avoid rapid acceleration of electric golf cart
The current of the high-voltage circuit will be very high if you start off sharply. Frequent rapid acceleration will affect the life of the motor controller and power battery, and shorten the driving range.
2, Avoid rapid parking of electric golf carts
Avoid sudden braking and stopping, because sudden braking will not only accelerate the wear of brake lining, but also the current feed-back caused by emergency braking will affect the motor controller, affecting the range and the life of the motor controller.
3, Maintain a stable driving speed for electric golf carts
Under the condition of road and traffic conditions, the vehicle should maintain a stable driving speed. After the vehicle starts and accelerates to a certain speed, the accelerator pedal can be relaxed to maintain the current speed.
4, Keep the normal tyre pressure of the electric golf cart
24V golf cart battery maintenance
1, Do not store the battery at a loss of power. If the battery of electric golf cart, electric sightseeing cart and electric food cart is not charged in time after use, it will be easily sulphated and lead sulphate crystals will be attached to the pole plate, blocking the electric ion channel, causing insufficient charging and decreasing the battery capacity. The longer the battery is left idle, the more serious the damage to the battery will be. When the battery is idle, it should be charged once a month, which can prolong the service life of the battery.
2, to regular inspection, in the process of use, if the electric golf cart range in a short period of time suddenly drop more than a dozen kilometres, it is likely to be at least one battery in the battery group has a broken cell, softening of the pole plate, the active material of the pole plate off and other short circuit phenomenon. At this time, you should go to a professional battery repair institution in time for inspection, repair or grouping.
3. Do not discharge the battery at high current, and try to avoid instantaneous high current discharge. High current discharge can easily lead to crystallization of lead sulphate, thus damaging the physical properties of the battery plate.
4, master the charging time, in general the battery is charged at night, the average charging time is about 8 hours. If it is shallow discharge (driving mileage after charging is very short), the golf cart battery will soon be full, continue charging will appear overcharge phenomenon, resulting in battery water loss, heat, reduce battery life. Therefore, the battery to discharge depth of 60%-70% when charging once the best, the actual use can be converted into riding mileage, according to the actual situation of the necessary charging, to avoid injurious charging.
5, Prevent high temperature exposure. Golf carts should not be exposed to the sun. High temperature environment will make the internal pressure of the battery increase and make the battery pressure limiting valve forced to open automatically, the direct consequence is to increase the water loss of the battery, and excessive water loss of the golf cart battery is bound to trigger a decline in battery activity, accelerate the softening of the pole plate, charging when the shell is hot, shell drum, deformation and other fatal damage.
Apr 12, 2022 | Company News
Improved safety of the 12V 100AH LiFePO4 battery
The P-O bond in the lithium iron phosphate crystals is strong and difficult to decompose, even at high temperatures or when overcharged, the structure does not collapse and heat up or form strong oxidising substances like lithium cobaltate, so it has a good safety profile. It has been reported that a small number of samples were found to burn during pin prick or short circuit tests in practice, but there was no case of explosion, while overcharging tests using a high voltage charge that was several times higher than its own discharge voltage still revealed an explosion. Nevertheless, the overcharge safety has been greatly improved compared to that of ordinary LiCoO2 batteries with liquid electrolyte.
Improvements in the life of the 12V 100AH LiFePO4 battery
The 12V 100AH LiFePO4 battery is a lithium-ion battery using lithium iron phosphate as the cathode material.
Long-life lead-acid batteries have a cycle life of around 300 times, up to 500 times, while lithium iron phosphate power batteries, cycle life of more than 2000 times, the standard charge (5 hours rate) use, can reach 2000 times. The same quality of lead-acid batteries is “new half year, old half year, maintenance maintenance and half year”, at most 1 ~ 1.5 years, while 12V 100AH LiFePO4 battery in the same conditions of use, the theoretical life will reach 7 ~ 8 years. Considered together, the performance to price ratio is theoretically more than 4 times that of lead-acid batteries. The high current discharge can be charged and discharged quickly with a high current of 2C. Under a special charger, the battery can be fully charged within 40 minutes at 1.5C and the starting current can reach 2C, whereas lead-acid batteries do not have this performance.
12V 100AH LiFePO4 battery high temperature performance
Lithium iron phosphate electric heat peak up to 350 ℃ -500 ℃, while lithium manganese acid and lithium cobalt acid only in about 200 ℃. Wide operating temperature range (-20C – 75C), with high temperature resistance lithium iron phosphate peak electrical heating up to 350 ℃ – 500 ℃, while lithium manganate and lithium cobalt only in the 200 ℃ or so.
12V 100AH LiFePO4 battery large capacity
Battery in often in the full not put out of the conditions of work, the capacity will quickly lower than the rated capacity value, this phenomenon is called the memory effect. Like NiMH and NiCd batteries have memory, but 12V 100AH LiFePO4 battery does not have this phenomenon, the battery can be charged and used no matter what state it is in, without having to be discharged and then recharged.
12V 100AH LiFePO4 battery is light in weight
A 12V 100AH LiFePO4 battery of the same capacity is 2/3 the size and 1/3 the weight of a lead-acid battery.
12V 100AH LiFePO4 battery is environmentally friendly
The 12V 100AH LiFePO4 battery is generally considered to be free of any heavy and rare metals (NiMH batteries require rare metals), non-toxic (SGS certified), non-polluting and compliant with European RoHS regulations, making it an absolutely green battery certificate. So lithium batteries are favored by the industry, mainly because of environmental considerations, so the battery is included in the “863” national high-tech development plan during the “Tenth Five-Year Plan”, becoming a key national support and encourage the development of the project. With China’s accession to the WTO, the export volume of Chinese electric bicycles will increase rapidly, and the electric bicycles entering Europe and America are already required to be equipped with non-polluting batteries.
Apr 11, 2022 | Company News
The full name of the 12V 100AH LiFePO4 battery is lithium iron phosphate lithium ion battery, which is too long to be shortened to 12V 100AH LiFePO4 battery. Power battery. Some people also call it “LiFe power battery”.
12V 100AH LiFePO4 battery working principle
The 12V 100AH LiFePO4 battery is a lithium-ion battery with lithium iron phosphate as the cathode material. Lithium-ion battery cathode materials are mainly lithium cobaltate, lithium manganate, lithium nickelate, ternary materials, lithium iron phosphate and so on. Lithium cobaltate is the cathode material used in most lithium-ion batteries at present.
12V 100AH LiFePO4 battery significance
In the metal trading market, cobalt (Co) is the most expensive and is not stored in large quantities, nickel (Ni) and manganese (Mn) are cheaper, while iron (Fe) is stored in large quantities. The price of the cathode material is also in line with the price quotes for these metals. Therefore, lithium-ion batteries made with LiFePO4 cathode material should be quite cheap. Another feature of it is that it is environmentally friendly and non-polluting.
As a rechargeable battery requirements are: high capacity, high output voltage, good charge and discharge cycle performance, stable output voltage, high current charge and discharge, electrochemical stability, safety in use (not due to overcharge, over discharge and short circuit and other improper operation caused by combustion or explosion), a wide range of operating temperatures, non-toxic or less toxic, no pollution of the environment. The 12V 100AH LiFePO4 battery with LiFePO4 as positive electrode is good in all these performance requirements, especially in large discharge rate discharge (5-10C discharge), smooth discharge voltage, safety (no combustion, no explosion), life (number of cycles), no pollution to the environment, it is the best, is the best high current output power battery.
12V 100AH LiFePO4 battery structure and working principle
LiFePO4 is used as the positive electrode of the battery and is connected to the positive electrode by an aluminium foil. In the middle is a polymer diaphragm, which separates the positive electrode from the negative electrode, but the lithium ion Li can pass through but the electron e- cannot. Between the top and bottom of the cell is the cell’s electrolyte, and the cell is hermetically sealed by a metal casing.
During charging of the LiFePO4 battery, the lithium ion Li in the positive electrode migrates through the polymer diaphragm towards the negative electrode; during discharge, the lithium ion Li in the negative electrode migrates through the diaphragm towards the positive electrode. Lithium ion batteries are named after the lithium ions that migrate back and forth during charging and discharging.
12V 100AH LiFePO4 battery main performance
LiFePO4 batteries have a nominal voltage of 3.2V, an end charge voltage of 3.6V and an end discharge voltage of 2.0V. The performance of LiFePO4 batteries may vary depending on the quality and process of the positive and negative electrode materials and electrolyte materials used by each manufacturer. For example, the capacity of the same model (standard battery in the same package) varies considerably (10% to 20%).
It should be noted here that different factories produce lithium iron phosphate power batteries in the various performance parameters will have some differences; in addition, there are some battery performance is not included, such as battery internal resistance, self-discharge rate, charge and discharge temperature, etc..
Lithium iron phosphate power battery capacity has a large difference, can be divided into three categories: small zero a few to a few mAh, medium-sized tens of mAh, large hundreds of mAh. There are also some differences in the similar parameters of the different types of batteries.
12V 100AH LiFePO4 battery over-discharge to zero voltage test.
The STL18650 (1100mAh) LiFePO4 power battery was used for the discharge to zero voltage test. Test conditions: use 0.5C charge rate to fill the 1100mAh STL18650 battery, then use 1.0C discharge rate to discharge the battery voltage to 0C. Then the battery will be put into 0V in two groups: one group stored for 7 days, the other group stored for 30 days; after storage expiry, then use 0.5C charge rate to fill, then use 1.0C discharge. Finally, the difference between the two different zero voltage storage periods was compared.
The results of the test were that after 7 days of zero voltage storage the battery had no leakage, good performance and 100% capacity; after 30 days of storage, no leakage, good performance and 98% capacity; after 30 days of storage the battery then did 3 charge/discharge cycles and the capacity was back to 100%.
This test shows that even if the 12V 100AH LiFePO4 battery is over-discharged (even to 0V) and stored for a certain period of time, the battery does not leak or get damaged. This is a characteristic that other types of Li-ion batteries do not have.
