Battery Terminology & Usage for Solar Street Light Systems | Queneng
This article provides a comprehensive overview of essential battery terminology and usage in solar street light systems, covering capacity, internal resistance, load capability, internal pressure, and C-rate discharge. It focuses on the practical application of solar lithium batteries in energy storage and lighting. Understanding these basics helps enhance the stability and lifespan of solar lighting systems. Keywords such as solar street light battery, solar energy storage system, and solar lithium battery are naturally included to improve search engine visibility.
Battery Terminology and Usage Basics in Solar Street Light Systems
Batteries play a crucial role in solar street lighting systems, serving as the core component for solar energy storage. Understanding basic battery terminology helps improve system performance, extend battery lifespan, and reduce maintenance costs.
1. Battery Capacity
Battery capacity is a key performance indicator for solar lithium battery packs and storage systems.
- Definition: The amount of electric charge a battery can deliver under specific discharge conditions, measured in ampere-hours (Ah) or milliampere-hours (mAh).
- Types:
- Theoretical Capacity: The maximum energy based on the active material content, calculated via Faraday's law.
- Rated Capacity: Also known as guaranteed capacity, defined by national or industry standards.
- Actual Capacity: The real output under working conditions, typically lower than rated capacity.
- Specific Capacity: The capacity per unit weight (mAh/g) or volume (mAh/cm³), often used for comparing different solar battery technologies.
In solar street lights, battery capacity determines how long lighting can last during nighttime.
2. Internal Resistance
Internal resistance directly affects the charge/discharge efficiency and voltage stability of solar lithium batteries.
- Definition: The resistance encountered by current flowing inside the battery.
- Variation Factors: Changes over time during discharge due to electrolyte concentration, temperature, and active material conditions.
- Components:
- Ohmic Resistance: Follows Ohm’s Law.
- Polarization Resistance:
- Electrochemical Polarization
- Concentration Polarization
- Effect:
- During discharge: output voltage drops.
- During charge: voltage rises above open-circuit voltage.
Lower internal resistance is crucial for stable performance in solar-powered LED street lights.
3. Load Capability of Lithium Batteries
- Definition: The ability of the battery to supply power to connected loads, such as solar street lamp fixtures.
- Practical Significance: A battery with higher load capability supports high-brightness, high-power solar lighting systems.
4. Internal Pressure of Lithium Batteries
- Definition: The gas pressure inside sealed batteries, resulting from gas generated during chemical reactions.
- Causes: Water content or organic electrolyte decomposition.
- Influencing Factors: Materials, manufacturing process, and battery design.
In high-quality solar battery storage systems, proper internal pressure control prevents swelling and damage.
5. C-Rate Discharge Ability
Understanding C-rate is essential for optimizing charge and discharge strategies in solar energy storage applications.
- What is C-Rate:
- 1C = Full discharge in 1 hour.
- 0.5C = Discharge in 2 hours.
- 2C = Discharge in 30 minutes.
- Example:
A 1100mAh battery: - 1C discharge = 1100mA current for 1 hour
- 0.2C discharge = 220mA current for 5 hours
-
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FAQ
Battery Types and Applications
What is the lifespan of rechargeable batteries used in cordless phones?
1. After charging, the call time becomes shorter every time;
2. The call signal is not clear enough, the reception effect is blurry, and the noise is loud;
3. The distance between the cordless phone and the base needs to be closer and closer, that is, the range of use of the cordless phone is getting narrower and narrower.
Battery fundamentals and basic terms
What is battery internal resistance?
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Can Luzhou solar street lights be used in remote locations?
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Battery and Analysis
What are the main factors that affect battery life?
When selecting a charger, it is best to use a charger with proper termination devices (e.g., anti-overcharge time device, negative voltage difference (-dV) cut-off charging, and anti-overheating sensing device) to avoid shortening the service life of the battery due to overcharging. Generally speaking, slow charging can prolong the service life of the battery more than fast charging.
2. Discharge:
a.The depth of discharge is the main factor affecting the life of the battery, the higher the depth of discharge, the shorter the life of the battery. In other words, by reducing the depth of discharge, the life of the battery can be greatly extended. Therefore, we should avoid over-discharging the battery to a very low voltage.
b. When batteries are discharged at high temperatures, the life of the battery will be shortened.
c. If an electronic device is designed in such a way that all current cannot be completely stopped, and if the device is left unused for a long period of time without the batteries being removed, the residual current may sometimes cause the batteries to be over-consumed, resulting in over-discharge of the batteries.
d. Mixing batteries of different capacities, chemical structures, or charge levels, as well as old and new batteries, can also cause excessive battery discharge, or even reverse charging.
3. Storage:
Prolonged storage of batteries at high temperatures will reduce their electrode activity and shorten their service life.
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What products does Queneng offer?
We offer a wide range of solar energy products, including solar lighting fixtures (street lights, garden lights, etc.), high-performance solar photovoltaic panels, energy storage batteries, and custom solar systems for various applications. We also provide installation and after-sales support.
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