When choosing an electric vehicle, users commonly pay attention to the battery voltage, seemingly believing that a higher voltage indicates better range. However, this notion is incorrect; voltage determines the vehicle’s performance, while capacity is what truly defines “range.”
When selecting an electric scooter battery, do you ever wonder how to choose among various voltages and capacities? People often focus on voltage and overlook capacity, but in reality, voltage determines the vehicle’s performance, and capacity determines the range.
The voltage requirement for Electric Vehicle (EV) power batteries is typically ≤48V, considered relatively low. Impressive electric bikes or mini scooters, especially those using Lithium Iron Phosphate (LiFePO4) batteries, can easily achieve a range of 150 kilometers. Despite the dominance of lower voltage standards, some electric vehicles have higher voltages.
The importance of voltage relative to current is emphasized, noting that higher voltage results in stronger current output. The discussion extends to the types of electric motors used in electric vehicles, distinguishing between Permanent Magnet Synchronous Motors for cars and Brushless Motors for electric scooters, both featuring a permanent magnet structure.
Both types of motors, trapezoidal back-electromotive force (EMF) for Brushless Permanent Magnet Synchronous Motors and sinusoidal back-EMF for Permanent Magnet Synchronous Motors, rely on electromagnetic fields for operation. Higher input current increases magnetic field strength, enhancing torque and power for faster acceleration and speed.
Reevaluating the scenario involving a 72V, 1 kWh battery, estimating the vehicle’s range at maximum speed. Challenges arise for smaller motors due to potential overheating and limitations of high-pressure systems in terms of range.
The suggested ideal combination involves parallel connections to increase capacity without changing voltage and series connections to raise voltage without altering capacity. To achieve the optimal balance between speed and range, it is recommended to keep the voltage below 48V for stable, long-distance performance. Adjusting voltage and capacity optimally creates an ideal combination for enhancing electric vehicle performance.
what size is a motorcycle battery ？
Generally, there are three types as follows:
Standard Sizes (YT Series): This is a common type of size, usually specified with codes like YT7B-4, YTZ10S, etc. The numbers in the code represent the physical dimensions and capacity of the battery.
Maintenance-Free (MF) Batteries: These batteries are sealed and require no maintenance. They come in various sizes, such as YTX7L-BS, YTX12-BS, and others.
Gel Batteries: Another type of sealed battery, gel batteries are filled with gel electrolyte. They also come in different sizes, such as YT9B-4, YTX14H-BS, and so on.
what size is a motorcycle battery ？
Generally, there are three types as follows:
Standard Sizes (YT Series): This is a common type of size, usually specified with codes like YT7B-4, YTZ10S, etc. The numbers in the code represent the physical dimensions and capacity of the battery.
Maintenance-Free (MF) Batteries: These batteries are sealed and require no maintenance. They come in various sizes, such as YTX7L-BS, YTX12-BS, and others.
Gel Batteries: Another type of sealed battery, gel batteries are filled with gel electrolyte. They also come in different sizes, such as YT9B-4, YTX14H-BS, and so on.
what kills a motorcycle battery？
Assuming the context is lithium-ion batteries, the common reasons for failure are as follows:
(1) Firstly, there is capacity degradation, which can be reversible or irreversible. Reversible capacity degradation can be restored by adjusting the battery’s charging and discharging methods, improving the battery’s operating environment, and implementing other measures. On the other hand, irreversible capacity degradation results from irreversible changes inside the battery, leading to unrecoverable capacity loss.
The fundamental cause of battery capacity degradation lies in material failure, closely related to objective factors such as battery manufacturing processes and usage environment. From a material perspective, the main reasons for failure include structural failure of the positive electrode material, excessive growth of the solid electrolyte interface (SEI) on the negative electrode surface, degradation of the electrolyte, corrosion of the current collector, and trace impurities, among others.
In summary, addressing battery capacity degradation requires understanding and mitigating both reversible and irreversible factors. Strategies may involve optimizing charging and discharging protocols, improving battery materials and manufacturing processes, and creating optimal battery usage conditions to minimize the impact of factors causing irreversible capacity degradation.
(2) The increase in internal resistance of lithium-ion batteries is related to electronic and ionic transport processes within the battery system. It is mainly divided into Ohmic resistance and polarization resistance, with polarization resistance primarily caused by electrochemical polarization, including electrochemical and concentration polarization. The key factors causing an increase in internal resistance in lithium-ion batteries are critical materials and battery usage environment. Within the battery system, abnormal critical materials are fundamental factors influencing increased internal resistance and battery polarization.
(3) Internal short circuits in batteries manifest in several ways:
Short circuit between copper/aluminum current collectors: The current collector is the conductive structure in the battery. If a short circuit occurs between copper or aluminum current collectors, the current may bypass the battery’s designated path, leading to overheating or failure.
Micro-short circuit due to separator failure: The separator plays a role in isolating the positive and negative electrodes. If the separator fails, losing electron insulation or creating tiny gaps, it may cause local heating and even spread during charging and discharging, resulting in thermal runaway.
Internal short circuits caused by transition metal impurities: If unremoved transition metal impurities exist in the positive electrode slurry, they may puncture the separator or induce the negative electrode to generate lithium dendrites, causing internal short circuits.
Internal short circuits caused by lithium dendrites: Lithium dendrites are lithium metal generated during the charging and discharging process. If they penetrate the separator and connect the positive and negative electrodes, it can lead to internal short circuits.
can a motorcycle battery die suddenly ?
Certainly, here is the translation of your text:
Potential Causes of Sudden Failure:
Aging and Wear: Motorcycle batteries undergo aging and wear over time. The cycles of charging and discharging lead to a decline in battery performance, ultimately resulting in failure.
External Damage: Motorcycle batteries may be subject to external damage, such as collisions in motorcycle accidents or excessive vibrations, both of which can lead to battery malfunctions.
Charging System Issues: Problems with the motorcycle’s charging system, such as generator malfunctions or unstable charging voltage, may prevent the battery from charging properly, ultimately depleting its energy.
Extreme Temperatures: Extreme climate conditions, whether high temperatures or extreme cold, can impact the battery’s performance, causing a reduction in capacity or even rendering the battery unable to function properly.
Circuit Issues: Problems with the motorcycle’s electrical circuits, such as short circuits or leaks, may result in rapid battery discharge, preventing it from maintaining a sufficient charge.
where is motorcycle batterY?
Motorcycle batteries are typically installed at the bottom of the motorcycle, generally located beneath the vehicle’s frame. Specifically, the battery is usually situated in a battery compartment under the motorcycle seat or beneath the fuel tank. The battery compartment is typically securely fastened to the motorcycle frame using screws or other fixing devices.
To locate the motorcycle battery, you can follow these steps:
Open the seat: Many motorcycles have the battery installed beneath the seat. You can open the seat to check for the presence of a battery compartment.
Check beneath the fuel tank: In some motorcycles, the battery compartment is located beneath the fuel tank. You can inspect the space beneath the fuel tank to see if there is a battery.
Inspect the frame: If you haven’t found the battery in the above two locations, you can check other parts of the motorcycle frame. The battery might be installed on the side or in the center of the frame.
It’s important to note that the installation location of motorcycle batteries may vary for different models and brands. Therefore, it’s advisable to consult the motorcycle’s user manual or contact the manufacturer for specific installation locations.
who sells motorcycle batteries
If you are an individual user, you can visit local dealerships or online shopping platforms such as Amazon, and explore various options for purchasing a motorcycle battery.
If you are involved in procurement or looking to source lithium batteries for your projects, you can contact us. We are a factory based in China with extensive research and production experience.
